diff --git a/arch/score/Kconfig b/arch/score/Kconfig
new file mode 100644
index 0000000..55d413e
--- /dev/null
+++ b/arch/score/Kconfig
@@ -0,0 +1,141 @@
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+
+mainmenu "Linux/SCORE Kernel Configuration"
+
+menu "Machine selection"
+
+choice
+	prompt "System type"
+	default MACH_SPCT6600
+
+config ARCH_SCORE7
+	bool "SCORE7 processor"
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select CPU_SCORE7
+	select GENERIC_HAS_IOMAP
+
+config MACH_SPCT6600
+	bool "SPCT6600 series based machines"
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select CPU_SCORE7
+	select GENERIC_HAS_IOMAP
+
+config SCORE_SIM
+	bool "Score simulator"
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select CPU_SCORE7
+	select GENERIC_HAS_IOMAP
+endchoice
+
+endmenu
+
+config CPU_SCORE7
+	bool
+
+config GENERIC_IOMAP
+	def_bool y
+
+config NO_DMA
+	bool
+	default y
+
+config RWSEM_GENERIC_SPINLOCK
+	def_bool y
+
+config GENERIC_FIND_NEXT_BIT
+	def_bool y
+
+config GENERIC_HWEIGHT
+	def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+	def_bool y
+
+config GENERIC_CLOCKEVENTS
+	def_bool y
+
+config GENERIC_TIME
+	def_bool y
+
+config SCHED_NO_NO_OMIT_FRAME_POINTER
+	def_bool y
+
+config GENERIC_HARDIRQS_NO__DO_IRQ
+	def_bool y
+
+config GENERIC_SYSCALL_TABLE
+	def_bool y
+
+config SCORE_L1_CACHE_SHIFT
+	int
+	default "4"
+
+menu "Kernel type"
+
+config 32BIT
+	def_bool y
+
+config GENERIC_HARDIRQS
+	def_bool y
+
+config ARCH_FLATMEM_ENABLE
+	def_bool y
+
+config ARCH_POPULATES_NODE_MAP
+	def_bool y
+
+source "mm/Kconfig"
+
+config MEMORY_START
+	hex
+	default	0xa0000000
+
+source "kernel/time/Kconfig"
+source "kernel/Kconfig.hz"
+source "kernel/Kconfig.preempt"
+
+endmenu
+
+config RWSEM_GENERIC_SPINLOCK
+	def_bool y
+
+config LOCKDEP_SUPPORT
+	def_bool y
+
+config STACKTRACE_SUPPORT
+	def_bool y
+
+source "init/Kconfig"
+
+config PROBE_INITRD_HEADER
+	bool "Probe initrd header created by addinitrd"
+	depends on BLK_DEV_INITRD
+	help
+	  Probe initrd header at the last page of kernel image.
+	  Say Y here if you are using arch/score/boot/addinitrd.c to
+	  add initrd or initramfs image to the kernel image.
+	  Otherwise, say N.
+
+config MMU
+	def_bool y
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/score/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
diff --git a/arch/score/Kconfig.debug b/arch/score/Kconfig.debug
new file mode 100644
index 0000000..451ed54
--- /dev/null
+++ b/arch/score/Kconfig.debug
@@ -0,0 +1,37 @@
+menu "Kernel hacking"
+
+config TRACE_IRQFLAGS_SUPPORT
+	bool
+	default y
+
+source "lib/Kconfig.debug"
+
+config CMDLINE
+	string "Default kernel command string"
+	default ""
+	help
+	  On some platforms, there is currently no way for the boot loader to
+	  pass arguments to the kernel. For these platforms, you can supply
+	  some command-line options at build time by entering them here.  In
+	  other cases you can specify kernel args so that you don't have
+	  to set them up in board prom initialization routines.
+
+config DEBUG_STACK_USAGE
+	bool "Enable stack utilization instrumentation"
+	depends on DEBUG_KERNEL
+	help
+	  Enables the display of the minimum amount of free stack which each
+	  task has ever had available in the sysrq-T and sysrq-P debug output.
+
+	  This option will slow down process creation somewhat.
+
+config RUNTIME_DEBUG
+	bool "Enable run-time debugging"
+	depends on DEBUG_KERNEL
+	help
+	  If you say Y here, some debugging macros will do run-time checking.
+	  If you say N here, those macros will mostly turn to no-ops.  See
+	  include/asm-score/debug.h for debuging macros.
+	  If unsure, say N.
+
+endmenu
diff --git a/arch/score/Makefile b/arch/score/Makefile
new file mode 100644
index 0000000..68e0cd0
--- /dev/null
+++ b/arch/score/Makefile
@@ -0,0 +1,43 @@
+#
+# arch/score/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+
+KBUILD_DEFCONFIG := spct6600_defconfig
+CROSS_COMPILE := score-linux-
+
+#
+# CPU-dependent compiler/assembler options for optimization.
+#
+cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \
+	-D__linux__ -ffunction-sections -ffreestanding
+
+#
+# Board-dependent options and extra files
+#
+KBUILD_AFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
+MODFLAGS += -mlong-calls
+LDFLAGS += --oformat elf32-littlescore
+LDFLAGS_vmlinux	+= -G0 -static -nostdlib
+
+head-y := arch/score/kernel/head.o
+libs-y += arch/score/lib/
+core-y += arch/score/kernel/ arch/score/mm/
+
+boot := arch/score/boot
+
+vmlinux.bin: vmlinux
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+archclean:
+	@$(MAKE) $(clean)=$(boot)
+
+define archhelp
+	echo '  vmlinux.bin          - Raw binary boot image'
+	echo
+	echo '  These will be default as apropriate for a configured platform.'
+endef
diff --git a/arch/score/boot/Makefile b/arch/score/boot/Makefile
new file mode 100644
index 0000000..0c5fbd0
--- /dev/null
+++ b/arch/score/boot/Makefile
@@ -0,0 +1,15 @@
+#
+# arch/score/boot/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+
+targets	:= vmlinux.bin
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
+	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+clean-files += vmlinux.bin
diff --git a/arch/score/configs/spct6600_defconfig b/arch/score/configs/spct6600_defconfig
new file mode 100644
index 0000000..e064943
--- /dev/null
+++ b/arch/score/configs/spct6600_defconfig
@@ -0,0 +1,717 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.30-rc5
+# Fri Jun 12 18:57:07 2009
+#
+
+#
+# Machine selection
+#
+# CONFIG_ARCH_SCORE7 is not set
+CONFIG_MACH_SPCT6600=y
+# CONFIG_SCORE_SIM is not set
+CONFIG_CPU_SCORE7=y
+CONFIG_GENERIC_IOMAP=y
+CONFIG_NO_DMA=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_TIME=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+CONFIG_GENERIC_SYSCALL_TABLE=y
+CONFIG_SCORE_L1_CACHE_SHIFT=4
+
+#
+# Kernel type
+#
+CONFIG_32BIT=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=0
+CONFIG_VIRT_TO_BUS=y
+CONFIG_UNEVICTABLE_LRU=y
+CONFIG_HAVE_MLOCK=y
+CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+CONFIG_MEMORY_START=0xa0000000
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_HZ_100=y
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=100
+# CONFIG_SCHED_HRTICK is not set
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_CLASSIC_RCU=y
+# CONFIG_TREE_RCU is not set
+# CONFIG_PREEMPT_RCU is not set
+# CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_PREEMPT_RCU_TRACE is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=12
+# CONFIG_GROUP_SCHED is not set
+# CONFIG_CGROUPS is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+# CONFIG_KALLSYMS is not set
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_HOTPLUG is not set
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_COMPAT_BRK=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+# CONFIG_SLOW_WORK is not set
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+# CONFIG_DEFAULT_AS is not set
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+# CONFIG_PROBE_INITRD_HEADER is not set
+CONFIG_MMU=y
+
+#
+# Executable file formats
+#
+CONFIG_BINFMT_ELF=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_HAVE_AOUT is not set
+CONFIG_BINFMT_MISC=y
+CONFIG_NET=y
+
+#
+# Networking options
+#
+# CONFIG_PACKET is not set
+CONFIG_UNIX=y
+CONFIG_XFRM=y
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_STATISTICS is not set
+CONFIG_NET_KEY=y
+# CONFIG_NET_KEY_MIGRATE is not set
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_IP_MROUTE is not set
+CONFIG_ARPD=y
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+CONFIG_INET_XFRM_MODE_TRANSPORT=y
+CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETLABEL is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_NET_DSA is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_PHONET is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+# CONFIG_WIRELESS is not set
+# CONFIG_WIMAX is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_CONNECTOR is not set
+# CONFIG_MTD is not set
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=y
+# CONFIG_BLK_DEV_NBD is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+CONFIG_BLK_DEV_RAM_SIZE=4096
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_MISC_DEVICES is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_MD is not set
+CONFIG_NETDEVICES=y
+CONFIG_COMPAT_NET_DEV_OPS=y
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_NET_ETHERNET is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+
+#
+# Enable WiMAX (Networking options) to see the WiMAX drivers
+#
+# CONFIG_WAN is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
+# CONFIG_INPUT_POLLDEV is not set
+
+#
+# Userland interfaces
+#
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_EVDEV is not set
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+CONFIG_VT=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_VT_CONSOLE=y
+CONFIG_HW_CONSOLE=y
+# CONFIG_VT_HW_CONSOLE_BINDING is not set
+CONFIG_DEVKMEM=y
+CONFIG_SERIAL_NONSTANDARD=y
+# CONFIG_N_HDLC is not set
+# CONFIG_RISCOM8 is not set
+# CONFIG_SPECIALIX is not set
+# CONFIG_RIO is not set
+CONFIG_STALDRV=y
+
+#
+# Serial drivers
+#
+# CONFIG_SERIAL_8250 is not set
+
+#
+# Non-8250 serial port support
+#
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_RTC is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+CONFIG_RAW_DRIVER=y
+CONFIG_MAX_RAW_DEVS=8192
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_REGULATOR is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Console display driver support
+#
+# CONFIG_VGA_CONSOLE is not set
+CONFIG_DUMMY_CONSOLE=y
+# CONFIG_SOUND is not set
+# CONFIG_HID_SUPPORT is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+# CONFIG_STAGING is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+# CONFIG_EXT2_FS_SECURITY is not set
+# CONFIG_EXT2_FS_XIP is not set
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+CONFIG_EXT3_FS_XATTR=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+# CONFIG_EXT3_FS_SECURITY is not set
+# CONFIG_EXT4_FS is not set
+CONFIG_JBD=y
+CONFIG_FS_MBCACHE=y
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FILE_LOCKING=y
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_BTRFS_FS is not set
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+CONFIG_AUTOFS_FS=y
+CONFIG_AUTOFS4_FS=y
+# CONFIG_FUSE_FS is not set
+CONFIG_GENERIC_ACL=y
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+# CONFIG_PROC_PAGE_MONITOR is not set
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+CONFIG_MISC_FILESYSTEMS=y
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_ECRYPT_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_SQUASHFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFSD=y
+CONFIG_NFSD_V2_ACL=y
+CONFIG_NFSD_V3=y
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_EXPORTFS=y
+CONFIG_NFS_ACL_SUPPORT=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+CONFIG_SUNRPC_GSS=y
+CONFIG_RPCSEC_GSS_KRB5=y
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Kernel hacking
+#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+# CONFIG_DEBUG_KERNEL is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+# CONFIG_SYSCTL_SYSCALL_CHECK is not set
+CONFIG_TRACING_SUPPORT=y
+
+#
+# Tracers
+#
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_EVENT_TRACER is not set
+# CONFIG_BOOT_TRACER is not set
+# CONFIG_TRACE_BRANCH_PROFILING is not set
+# CONFIG_KMEMTRACE is not set
+# CONFIG_WORKQUEUE_TRACER is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_SAMPLES is not set
+CONFIG_CMDLINE=""
+
+#
+# Security options
+#
+CONFIG_KEYS=y
+CONFIG_KEYS_DEBUG_PROC_KEYS=y
+CONFIG_SECURITY=y
+# CONFIG_SECURITYFS is not set
+CONFIG_SECURITY_NETWORK=y
+# CONFIG_SECURITY_NETWORK_XFRM is not set
+# CONFIG_SECURITY_PATH is not set
+CONFIG_SECURITY_FILE_CAPABILITIES=y
+CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0
+# CONFIG_SECURITY_TOMOYO is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+# CONFIG_CRYPTO_FIPS is not set
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_AEAD=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_BLKCIPHER2=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_PCOMP=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+# CONFIG_CRYPTO_GF128MUL is not set
+CONFIG_CRYPTO_NULL=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_CRYPTO_CRYPTD=y
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+CONFIG_CRYPTO_SEQIV=y
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+# CONFIG_CRYPTO_ECB is not set
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_PCBC is not set
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_MD4=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=y
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_ZLIB is not set
+# CONFIG_CRYPTO_LZO is not set
+
+#
+# Random Number Generation
+#
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+# CONFIG_BINARY_PRINTF is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_FIND_LAST_BIT=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC16=y
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+CONFIG_LIBCRC32C=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_NLATTR=y
diff --git a/arch/score/include/asm/Kbuild b/arch/score/include/asm/Kbuild
new file mode 100644
index 0000000..b367abd
--- /dev/null
+++ b/arch/score/include/asm/Kbuild
@@ -0,0 +1,3 @@
+include include/asm-generic/Kbuild.asm
+
+header-y +=
diff --git a/arch/score/include/asm/asmmacro.h b/arch/score/include/asm/asmmacro.h
new file mode 100644
index 0000000..a04a54c
--- /dev/null
+++ b/arch/score/include/asm/asmmacro.h
@@ -0,0 +1,161 @@
+#ifndef _ASM_SCORE_ASMMACRO_H
+#define _ASM_SCORE_ASMMACRO_H
+
+#include <asm/asm-offsets.h>
+
+#ifdef __ASSEMBLY__
+
+.macro	SAVE_ALL
+	mfcr	r30, cr0
+	mv	r31, r0
+	nop
+	/* if UMs == 1, change stack. */
+	slli.c	r30, r30, 28
+	bpl	1f
+	la	r31, kernelsp
+	lw	r31, [r31]
+1:
+	mv	r30, r0
+	addri	r0, r31, -PT_SIZE
+
+	sw	r30, [r0, PT_R0]
+	.set	r1
+	sw	r1, [r0, PT_R1]
+	.set	nor1
+	sw	r2, [r0, PT_R2]
+	sw	r3, [r0, PT_R3]
+	sw	r4, [r0, PT_R4]
+	sw	r5, [r0, PT_R5]
+	sw	r6, [r0, PT_R6]
+	sw	r7, [r0, PT_R7]
+
+	sw	r8, [r0, PT_R8]
+	sw	r9, [r0, PT_R9]
+	sw	r10, [r0, PT_R10]
+	sw	r11, [r0, PT_R11]
+	sw	r12, [r0, PT_R12]
+	sw	r13, [r0, PT_R13]
+	sw	r14, [r0, PT_R14]
+	sw	r15, [r0, PT_R15]
+
+	sw	r16, [r0, PT_R16]
+	sw	r17, [r0, PT_R17]
+	sw	r18, [r0, PT_R18]
+	sw	r19, [r0, PT_R19]
+	sw	r20, [r0, PT_R20]
+	sw	r21, [r0, PT_R21]
+	sw	r22, [r0, PT_R22]
+	sw	r23, [r0, PT_R23]
+
+	sw	r24, [r0, PT_R24]
+	sw	r25, [r0, PT_R25]
+	sw	r25, [r0, PT_R25]
+	sw	r26, [r0, PT_R26]
+	sw	r27, [r0, PT_R27]
+
+	sw	r28, [r0, PT_R28]
+	sw	r29, [r0, PT_R29]
+	orri	r28, r0, 0x1fff
+	li	r31, 0x00001fff
+	xor	r28, r28, r31
+
+	mfcehl	r30, r31
+	sw	r30, [r0, PT_CEH]
+	sw	r31, [r0, PT_CEL]
+
+	mfcr	r31, cr0
+	sw	r31, [r0, PT_PSR]
+
+	mfcr	r31, cr1
+	sw	r31, [r0, PT_CONDITION]
+
+	mfcr	r31, cr2
+	sw	r31, [r0, PT_ECR]
+	
+	mfcr	r31, cr5
+	srli	r31, r31, 1
+	slli	r31, r31, 1
+	sw	r31, [r0, PT_EPC]
+.endm
+
+.macro	RESTORE_ALL_AND_RET
+	mfcr	r30, cr0
+	srli	r30, r30, 1
+	slli	r30, r30, 1
+	mtcr	r30, cr0
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	.set	r1
+	ldis	r1, 0x00ff
+	and	r30, r30, r1
+	not	r1, r1
+	lw	r31, [r0, PT_PSR]
+	and	r31, r31, r1
+	.set	nor1
+	or	r31, r31, r30
+	mtcr	r31, cr0
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	lw	r30, [r0, PT_CONDITION]
+	mtcr	r30, cr1
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	lw	r30, [r0, PT_CEH]
+	lw	r31, [r0, PT_CEL]
+	mtcehl	r30, r31
+
+	.set	r1
+	lw	r1, [r0, PT_R1]
+	.set	nor1
+	lw	r2, [r0, PT_R2]
+	lw	r3, [r0, PT_R3]
+	lw	r4, [r0, PT_R4]
+	lw	r5, [r0, PT_R5]
+	lw	r6, [r0, PT_R6]
+	lw	r7, [r0, PT_R7]
+
+	lw	r8, [r0, PT_R8]
+	lw	r9, [r0, PT_R9]
+	lw	r10, [r0, PT_R10]
+	lw	r11, [r0, PT_R11]
+	lw	r12, [r0, PT_R12]
+	lw	r13, [r0, PT_R13]
+	lw	r14, [r0, PT_R14]
+	lw	r15, [r0, PT_R15]
+
+	lw	r16, [r0, PT_R16]
+	lw	r17, [r0, PT_R17]
+	lw	r18, [r0, PT_R18]
+	lw	r19, [r0, PT_R19]
+	lw	r20, [r0, PT_R20]
+	lw	r21, [r0, PT_R21]
+	lw	r22, [r0, PT_R22]
+	lw	r23, [r0, PT_R23]
+
+	lw	r24, [r0, PT_R24]
+	lw	r25, [r0, PT_R25]
+	lw	r26, [r0, PT_R26]
+	lw	r27, [r0, PT_R27]
+	lw	r28, [r0, PT_R28]
+	lw	r29, [r0, PT_R29]
+
+	lw	r30, [r0, PT_EPC]
+	lw	r0, [r0, PT_R0]
+	mtcr	r30, cr5
+	rte
+.endm
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_SCORE_ASMMACRO_H */
diff --git a/arch/score/include/asm/atomic.h b/arch/score/include/asm/atomic.h
new file mode 100644
index 0000000..84eb8dd
--- /dev/null
+++ b/arch/score/include/asm/atomic.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_ATOMIC_H
+#define _ASM_SCORE_ATOMIC_H
+
+#include <asm-generic/atomic.h>
+
+#endif /* _ASM_SCORE_ATOMIC_H */
diff --git a/arch/score/include/asm/auxvec.h b/arch/score/include/asm/auxvec.h
new file mode 100644
index 0000000..f691515
--- /dev/null
+++ b/arch/score/include/asm/auxvec.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_AUXVEC_H
+#define _ASM_SCORE_AUXVEC_H
+
+#endif /* _ASM_SCORE_AUXVEC_H */
diff --git a/arch/score/include/asm/bitops.h b/arch/score/include/asm/bitops.h
new file mode 100644
index 0000000..2763b05
--- /dev/null
+++ b/arch/score/include/asm/bitops.h
@@ -0,0 +1,16 @@
+#ifndef _ASM_SCORE_BITOPS_H
+#define _ASM_SCORE_BITOPS_H
+
+#include <asm/byteorder.h> /* swab32 */
+#include <asm/system.h> /* save_flags */
+
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit()	barrier()
+#define smp_mb__after_clear_bit()	barrier()
+
+#include <asm-generic/bitops.h>
+#include <asm-generic/bitops/__fls.h>
+
+#endif /* _ASM_SCORE_BITOPS_H */
diff --git a/arch/score/include/asm/bitsperlong.h b/arch/score/include/asm/bitsperlong.h
new file mode 100644
index 0000000..86ff337
--- /dev/null
+++ b/arch/score/include/asm/bitsperlong.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BITSPERLONG_H
+#define _ASM_SCORE_BITSPERLONG_H
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _ASM_SCORE_BITSPERLONG_H */
diff --git a/arch/score/include/asm/bug.h b/arch/score/include/asm/bug.h
new file mode 100644
index 0000000..bb76a33
--- /dev/null
+++ b/arch/score/include/asm/bug.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BUG_H
+#define _ASM_SCORE_BUG_H
+
+#include <asm-generic/bug.h>
+
+#endif /* _ASM_SCORE_BUG_H */
diff --git a/arch/score/include/asm/bugs.h b/arch/score/include/asm/bugs.h
new file mode 100644
index 0000000..a062e10
--- /dev/null
+++ b/arch/score/include/asm/bugs.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BUGS_H
+#define _ASM_SCORE_BUGS_H
+
+#include <asm-generic/bugs.h>
+
+#endif /* _ASM_SCORE_BUGS_H */
diff --git a/arch/score/include/asm/byteorder.h b/arch/score/include/asm/byteorder.h
new file mode 100644
index 0000000..88cbebc
--- /dev/null
+++ b/arch/score/include/asm/byteorder.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BYTEORDER_H
+#define _ASM_SCORE_BYTEORDER_H
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _ASM_SCORE_BYTEORDER_H */
diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h
new file mode 100644
index 0000000..ae3d59f
--- /dev/null
+++ b/arch/score/include/asm/cache.h
@@ -0,0 +1,7 @@
+#ifndef _ASM_SCORE_CACHE_H
+#define _ASM_SCORE_CACHE_H
+
+#define L1_CACHE_SHIFT		4
+#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+
+#endif /* _ASM_SCORE_CACHE_H */
diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h
new file mode 100644
index 0000000..1c74628
--- /dev/null
+++ b/arch/score/include/asm/cacheflush.h
@@ -0,0 +1,47 @@
+#ifndef _ASM_SCORE_CACHEFLUSH_H
+#define _ASM_SCORE_CACHEFLUSH_H
+
+/* Keep includes the same across arches. */
+#include <linux/mm.h>
+
+extern void (*flush_cache_all)(void);
+extern void (*flush_cache_mm)(struct mm_struct *mm);
+extern void (*flush_cache_range)(struct vm_area_struct *vma,
+				unsigned long start, unsigned long end);
+extern void (*flush_cache_page)(struct vm_area_struct *vma,
+				unsigned long page, unsigned long pfn);
+extern void (*flush_cache_sigtramp)(unsigned long addr);
+extern void (*flush_icache_all)(void);
+extern void (*flush_icache_range)(unsigned long start, unsigned long end);
+extern void (*flush_data_cache_page)(unsigned long addr);
+
+extern void s7_flush_cache_all(void);
+
+#define flush_cache_dup_mm(mm)			do {} while (0)
+#define flush_dcache_page(page)			do {} while (0)
+#define flush_dcache_mmap_lock(mapping)		do {} while (0)
+#define flush_dcache_mmap_unlock(mapping)	do {} while (0)
+#define flush_cache_vmap(start, end)		do {} while (0)
+#define flush_cache_vunmap(start, end)		do {} while (0)
+
+static inline void flush_icache_page(struct vm_area_struct *vma,
+	struct page *page)
+{
+	if (vma->vm_flags & VM_EXEC) {
+		void *v = page_address(page);
+		flush_icache_range((unsigned long) v,
+				(unsigned long) v + PAGE_SIZE);
+	}
+}
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)	\
+	do {							\
+		memcpy(dst, src, len);				\
+		if ((vma->vm_flags & VM_EXEC))			\
+			flush_cache_page(vma, vaddr, page_to_pfn(page));\
+	} while (0)
+
+#endif /* _ASM_SCORE_CACHEFLUSH_H */
diff --git a/arch/score/include/asm/checksum.h b/arch/score/include/asm/checksum.h
new file mode 100644
index 0000000..f909ac3
--- /dev/null
+++ b/arch/score/include/asm/checksum.h
@@ -0,0 +1,235 @@
+#ifndef _ASM_SCORE_CHECKSUM_H
+#define _ASM_SCORE_CHECKSUM_H
+
+#include <linux/in6.h>
+#include <asm/uaccess.h>
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+unsigned int csum_partial(const void *buff, int len, __wsum sum);
+unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
+					unsigned int sum, int *csum_err);
+unsigned int csum_partial_copy(const char *src, char *dst,
+					int len, unsigned int sum);
+
+/*
+ * this is a new version of the above that records errors it finds in *errp,
+ * but continues and zeros the rest of the buffer.
+ */
+
+/*
+ * Copy and checksum to user
+ */
+#define HAVE_CSUM_COPY_USER
+static inline
+__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
+			__wsum sum, int *err_ptr)
+{
+	sum = csum_partial(src, len, sum);
+	if (copy_to_user(dst, src, len)) {
+		*err_ptr = -EFAULT;
+		return (__force __wsum) -1; /* invalid checksum */
+	}
+	return sum;
+}
+
+
+#define csum_partial_copy_nocheck csum_partial_copy
+/*
+ *	Fold a partial checksum without adding pseudo headers
+ */
+
+static inline __sum16 csum_fold(__wsum sum)
+{
+	/* the while loop is unnecessary really, it's always enough with two
+	   iterations */
+	__asm__ __volatile__(
+		".set volatile\n\t"
+		".set\tr1\n\t"
+		"slli\tr1,%0, 16\n\t"
+		"add\t%0,%0, r1\n\t"
+		"cmp.c\tr1, %0\n\t"
+		"srli\t%0, %0, 16\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:ldi\tr30, 0xffff\n\t"
+		"xor\t%0, %0, r30\n\t"
+		"slli\t%0, %0, 16\n\t"
+		"srli\t%0, %0, 16\n\t"
+		".set\tnor1\n\t"
+		".set optimize\n\t"
+		: "=r" (sum)
+		: "0" (sum));
+	return sum;
+}
+
+/*
+ *	This is a version of ip_compute_csum() optimized for IP headers,
+ *	which always checksum on 4 octet boundaries.
+ *
+ *	By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
+ *	Arnt Gulbrandsen.
+ */
+static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
+{
+	unsigned int sum;
+	unsigned long dummy;
+
+	__asm__ __volatile__(
+		".set volatile\n\t"
+		".set\tnor1\n\t"
+		"lw\t%0, [%1]\n\t"
+		"subri\t%2, %2, 4\n\t"
+		"slli\t%2, %2, 2\n\t"
+		"lw\t%3, [%1, 4]\n\t"
+		"add\t%2, %2, %1\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"lw\t%3, [%1, 8]\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"lw\t%3, [%1, 12]\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n"
+
+		"1:\tlw\t%3, [%1, 16]\n\t"
+		"addi\t%1, 4\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"bleu\t2f\n\t"
+		"addi\t%0, 0x1\n"
+		"2:cmp.c\t%2, %1\n\t"
+		"bne\t1b\n\t"
+
+		".set\tr1\n\t"
+		".set optimize\n\t"
+		: "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy)
+		: "1" (iph), "2" (ihl));
+
+	return csum_fold(sum);
+}
+
+static inline __wsum
+csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
+		unsigned short proto, __wsum sum)
+{
+	unsigned long tmp = (ntohs(len) << 16) + proto * 256;
+	__asm__ __volatile__(
+		".set volatile\n\t"
+		"add\t%0, %0, %2\n\t"
+		"cmp.c\t%2, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		"add\t%0, %0, %4\n\t"
+		"cmp.c\t%4, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		".set optimize\n\t"
+		: "=r" (sum)
+		: "0" (daddr), "r"(saddr),
+		"r" (tmp),
+		"r" (sum));
+	return sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static inline __sum16
+csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
+		unsigned short proto, __wsum sum)
+{
+	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+
+static inline unsigned short ip_compute_csum(const void *buff, int len)
+{
+	return csum_fold(csum_partial(buff, len, 0));
+}
+
+#define _HAVE_ARCH_IPV6_CSUM
+static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+				const struct in6_addr *daddr,
+				__u32 len, unsigned short proto,
+				__wsum sum)
+{
+	__asm__ __volatile__(
+		".set\tnoreorder\t\t\t# csum_ipv6_magic\n\t"
+		".set\tnoat\n\t"
+		"addu\t%0, %5\t\t\t# proto (long in network byte order)\n\t"
+		"sltu\t$1, %0, %5\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %6\t\t\t# csum\n\t"
+		"sltu\t$1, %0, %6\n\t"
+		"lw\t%1, 0(%2)\t\t\t# four words source address\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 4(%2)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 8(%2)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 12(%2)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 0(%3)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 4(%3)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 8(%3)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"lw\t%1, 12(%3)\n\t"
+		"addu\t%0, $1\n\t"
+		"addu\t%0, %1\n\t"
+		"sltu\t$1, %0, %1\n\t"
+		"addu\t%0, $1\t\t\t# Add final carry\n\t"
+		".set\tnoat\n\t"
+		".set\tnoreorder"
+		: "=r" (sum), "=r" (proto)
+		: "r" (saddr), "r" (daddr),
+		  "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
+
+	return csum_fold(sum);
+}
+#endif /* _ASM_SCORE_CHECKSUM_H */
diff --git a/arch/score/include/asm/cputime.h b/arch/score/include/asm/cputime.h
new file mode 100644
index 0000000..1fced99
--- /dev/null
+++ b/arch/score/include/asm/cputime.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_CPUTIME_H
+#define _ASM_SCORE_CPUTIME_H
+
+#include <asm-generic/cputime.h>
+
+#endif /* _ASM_SCORE_CPUTIME_H */
diff --git a/arch/score/include/asm/current.h b/arch/score/include/asm/current.h
new file mode 100644
index 0000000..16eae9c
--- /dev/null
+++ b/arch/score/include/asm/current.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_CURRENT_H
+#define _ASM_SCORE_CURRENT_H
+
+#include <asm-generic/current.h>
+
+#endif /* _ASM_SCORE_CURRENT_H */
diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h
new file mode 100644
index 0000000..ad716f6
--- /dev/null
+++ b/arch/score/include/asm/delay.h
@@ -0,0 +1,21 @@
+#ifndef _ASM_SCORE_DELAY_H
+#define _ASM_SCORE_DELAY_H
+
+static inline void __delay(unsigned long loops)
+{
+	__asm__ __volatile__ (
+		"1:\tsubi\t%0,1\n\t"
+		"cmpz.c\t%0\n\t"
+		"bne\t1b\n\t"
+		: "=r" (loops)
+		: "0" (loops));
+}
+
+static inline void __udelay(unsigned long usecs)
+{
+	__delay(usecs);
+}
+
+#define udelay(usecs) __udelay(usecs)
+
+#endif /* _ASM_SCORE_DELAY_H */
diff --git a/arch/score/include/asm/device.h b/arch/score/include/asm/device.h
new file mode 100644
index 0000000..2dc7cc5
--- /dev/null
+++ b/arch/score/include/asm/device.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_DEVICE_H
+#define _ASM_SCORE_DEVICE_H
+
+#include <asm-generic/device.h>
+
+#endif /* _ASM_SCORE_DEVICE_H */
diff --git a/arch/score/include/asm/div64.h b/arch/score/include/asm/div64.h
new file mode 100644
index 0000000..75fae19
--- /dev/null
+++ b/arch/score/include/asm/div64.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_DIV64_H
+#define _ASM_SCORE_DIV64_H
+
+#include <asm-generic/div64.h>
+
+#endif /* _ASM_SCORE_DIV64_H */
diff --git a/arch/score/include/asm/dma-mapping.h b/arch/score/include/asm/dma-mapping.h
new file mode 100644
index 0000000..f9c0193
--- /dev/null
+++ b/arch/score/include/asm/dma-mapping.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_DMA_MAPPING_H
+#define _ASM_SCORE_DMA_MAPPING_H
+
+#include <asm-generic/dma-mapping-broken.h>
+
+#endif /* _ASM_SCORE_DMA_MAPPING_H */
diff --git a/arch/score/include/asm/dma.h b/arch/score/include/asm/dma.h
new file mode 100644
index 0000000..9f44185
--- /dev/null
+++ b/arch/score/include/asm/dma.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_DMA_H
+#define _ASM_SCORE_DMA_H
+
+#include <asm/io.h>
+
+#define MAX_DMA_ADDRESS		(0)
+
+#endif /* _ASM_SCORE_DMA_H */
diff --git a/arch/score/include/asm/elf.h b/arch/score/include/asm/elf.h
new file mode 100644
index 0000000..8324363
--- /dev/null
+++ b/arch/score/include/asm/elf.h
@@ -0,0 +1,99 @@
+#ifndef _ASM_SCORE_ELF_H
+#define _ASM_SCORE_ELF_H
+
+/* ELF register definitions */
+#define ELF_NGREG	45
+#define ELF_NFPREG	33
+#define EM_SCORE7	135
+
+/* Relocation types. */
+#define R_SCORE_NONE		0
+#define R_SCORE_HI16		1
+#define R_SCORE_LO16		2
+#define R_SCORE_BCMP		3
+#define R_SCORE_24		4
+#define R_SCORE_PC19		5
+#define R_SCORE16_11		6
+#define R_SCORE16_PC8		7
+#define R_SCORE_ABS32		8
+#define R_SCORE_ABS16		9
+#define R_SCORE_DUMMY2		10
+#define R_SCORE_GP15		11
+#define R_SCORE_GNU_VTINHERIT	12
+#define R_SCORE_GNU_VTENTRY	13
+#define R_SCORE_GOT15		14
+#define R_SCORE_GOT_LO16	15
+#define R_SCORE_CALL15		16
+#define R_SCORE_GPREL32		17
+#define R_SCORE_REL32		18
+#define R_SCORE_DUMMY_HI16	19
+#define R_SCORE_IMM30		20
+#define R_SCORE_IMM32		21
+
+typedef unsigned long elf_greg_t;
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef double elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+#define elf_check_arch(x)	((x)->e_machine == EM_SCORE7)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS	ELFCLASS32
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_DATA	ELFDATA2LSB
+#define ELF_ARCH	EM_SCORE7
+
+#define SET_PERSONALITY(ex)					\
+do {								\
+	set_personality(PER_LINUX);				\
+} while (0)
+
+struct task_struct;
+struct pt_regs;
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE	PAGE_SIZE
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this cpu supports.  This could be done in userspace,
+   but it's not easy, and we've already done it here.  */
+
+#define ELF_HWCAP	(0)
+
+/* This yields a string that ld.so will use to load implementation
+   specific libraries for optimization.  This is more specific in
+   intent than poking at uname or /proc/cpuinfo.
+
+   For the moment, we have only optimizations for the Intel generations,
+   but that could change... */
+
+#define ELF_PLATFORM	(NULL)
+
+#define ELF_PLAT_INIT(_r, load_addr)					\
+do {									\
+	_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;	\
+	_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;	\
+	_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;	\
+	_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;	\
+	_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;	\
+	_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;	\
+	_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;	\
+	_r->regs[30] = _r->regs[31] = 0;				\
+} while (0)
+
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#ifndef ELF_ET_DYN_BASE
+#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+#endif
+
+#endif /* _ASM_SCORE_ELF_H */
diff --git a/arch/score/include/asm/emergency-restart.h b/arch/score/include/asm/emergency-restart.h
new file mode 100644
index 0000000..ca31e98
--- /dev/null
+++ b/arch/score/include/asm/emergency-restart.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_EMERGENCY_RESTART_H
+#define _ASM_SCORE_EMERGENCY_RESTART_H
+
+#include <asm-generic/emergency-restart.h>
+
+#endif /* _ASM_SCORE_EMERGENCY_RESTART_H */
diff --git a/arch/score/include/asm/errno.h b/arch/score/include/asm/errno.h
new file mode 100644
index 0000000..7cd3e1f
--- /dev/null
+++ b/arch/score/include/asm/errno.h
@@ -0,0 +1,7 @@
+#ifndef _ASM_SCORE_ERRNO_H
+#define _ASM_SCORE_ERRNO_H
+
+#include <asm-generic/errno.h>
+#define EMAXERRNO 1024
+
+#endif /* _ASM_SCORE_ERRNO_H */
diff --git a/arch/score/include/asm/fcntl.h b/arch/score/include/asm/fcntl.h
new file mode 100644
index 0000000..03968a3
--- /dev/null
+++ b/arch/score/include/asm/fcntl.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_FCNTL_H
+#define _ASM_SCORE_FCNTL_H
+
+#include <asm-generic/fcntl.h>
+
+#endif /* _ASM_SCORE_FCNTL_H */
diff --git a/arch/score/include/asm/fixmap.h b/arch/score/include/asm/fixmap.h
new file mode 100644
index 0000000..ee16766
--- /dev/null
+++ b/arch/score/include/asm/fixmap.h
@@ -0,0 +1,82 @@
+#ifndef _ASM_SCORE_FIXMAP_H
+#define _ASM_SCORE_FIXMAP_H
+
+#include <asm/page.h>
+
+#define PHY_RAM_BASE		0x00000000
+#define PHY_IO_BASE		0x10000000
+
+#define VIRTUAL_RAM_BASE	0xa0000000
+#define VIRTUAL_IO_BASE		0xb0000000
+
+#define RAM_SPACE_SIZE		0x10000000
+#define IO_SPACE_SIZE		0x10000000
+
+/* Kernel unmapped, cached 512MB */
+#define KSEG1			0xa0000000
+
+/*
+ * Here we define all the compile-time 'special' virtual
+ * addresses. The point is to have a constant address at
+ * compile time, but to set the physical address only
+ * in the boot process. We allocate these special addresses
+ * from the end of virtual memory (0xfffff000) backwards.
+ * Also this lets us do fail-safe vmalloc(), we
+ * can guarantee that these special addresses and
+ * vmalloc()-ed addresses never overlap.
+ *
+ * these 'compile-time allocated' memory buffers are
+ * fixed-size 4k pages. (or larger if used with an increment
+ * highger than 1) use fixmap_set(idx,phys) to associate
+ * physical memory with fixmap indices.
+ *
+ * TLB entries of such buffers will not be flushed across
+ * task switches.
+ */
+
+/*
+ * on UP currently we will have no trace of the fixmap mechanizm,
+ * no page table allocations, etc. This might change in the
+ * future, say framebuffers for the console driver(s) could be
+ * fix-mapped?
+ */
+enum fixed_addresses {
+#define FIX_N_COLOURS 8
+	FIX_CMAP_BEGIN,
+	FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS,
+	__end_of_fixed_addresses
+};
+
+/*
+ * used by vmalloc.c.
+ *
+ * Leave one empty page between vmalloc'ed areas and
+ * the start of the fixmap, and leave one page empty
+ * at the top of mem..
+ */
+#define FIXADDR_TOP	((unsigned long)(long)(int)0xfefe0000)
+#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE)
+
+#define __fix_to_virt(x)	(FIXADDR_TOP - ((x) << PAGE_SHIFT))
+#define __virt_to_fix(x)	\
+	((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT)
+
+extern void __this_fixmap_does_not_exist(void);
+
+/*
+ * 'index to address' translation. If anyone tries to use the idx
+ * directly without tranlation, we catch the bug with a NULL-deference
+ * kernel oops. Illegal ranges of incoming indices are caught too.
+ */
+static inline unsigned long fix_to_virt(const unsigned int idx)
+{
+	return __fix_to_virt(idx);
+}
+
+static inline unsigned long virt_to_fix(const unsigned long vaddr)
+{
+	return __virt_to_fix(vaddr);
+}
+
+#endif /* _ASM_SCORE_FIXMAP_H */
diff --git a/arch/score/include/asm/ftrace.h b/arch/score/include/asm/ftrace.h
new file mode 100644
index 0000000..79d6f10
--- /dev/null
+++ b/arch/score/include/asm/ftrace.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_FTRACE_H
+#define _ASM_SCORE_FTRACE_H
+
+#endif /* _ASM_SCORE_FTRACE_H */
diff --git a/arch/score/include/asm/futex.h b/arch/score/include/asm/futex.h
new file mode 100644
index 0000000..1dca242
--- /dev/null
+++ b/arch/score/include/asm/futex.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_FUTEX_H
+#define _ASM_SCORE_FUTEX_H
+
+#include <asm-generic/futex.h>
+
+#endif /* _ASM_SCORE_FUTEX_H */
diff --git a/arch/score/include/asm/hardirq.h b/arch/score/include/asm/hardirq.h
new file mode 100644
index 0000000..dc932c5
--- /dev/null
+++ b/arch/score/include/asm/hardirq.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_HARDIRQ_H
+#define _ASM_SCORE_HARDIRQ_H
+
+#include <asm-generic/hardirq.h>
+
+#endif /* _ASM_SCORE_HARDIRQ_H */
diff --git a/arch/score/include/asm/hw_irq.h b/arch/score/include/asm/hw_irq.h
new file mode 100644
index 0000000..4caafb2
--- /dev/null
+++ b/arch/score/include/asm/hw_irq.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_HW_IRQ_H
+#define _ASM_SCORE_HW_IRQ_H
+
+#endif /* _ASM_SCORE_HW_IRQ_H */
diff --git a/arch/score/include/asm/io.h b/arch/score/include/asm/io.h
new file mode 100644
index 0000000..fbbfd71
--- /dev/null
+++ b/arch/score/include/asm/io.h
@@ -0,0 +1,9 @@
+#ifndef _ASM_SCORE_IO_H
+#define _ASM_SCORE_IO_H
+
+#include <asm-generic/io.h>
+
+#define virt_to_bus	virt_to_phys
+#define bus_to_virt	phys_to_virt
+
+#endif /* _ASM_SCORE_IO_H */
diff --git a/arch/score/include/asm/ioctl.h b/arch/score/include/asm/ioctl.h
new file mode 100644
index 0000000..a351d21
--- /dev/null
+++ b/arch/score/include/asm/ioctl.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IOCTL_H
+#define _ASM_SCORE_IOCTL_H
+
+#include <asm-generic/ioctl.h>
+
+#endif /* _ASM_SCORE_IOCTL_H */
diff --git a/arch/score/include/asm/ioctls.h b/arch/score/include/asm/ioctls.h
new file mode 100644
index 0000000..ed01d2b
--- /dev/null
+++ b/arch/score/include/asm/ioctls.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IOCTLS_H
+#define _ASM_SCORE_IOCTLS_H
+
+#include <asm-generic/ioctls.h>
+
+#endif /* _ASM_SCORE_IOCTLS_H */
diff --git a/arch/score/include/asm/ipcbuf.h b/arch/score/include/asm/ipcbuf.h
new file mode 100644
index 0000000..e082cef
--- /dev/null
+++ b/arch/score/include/asm/ipcbuf.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IPCBUF_H
+#define _ASM_SCORE_IPCBUF_H
+
+#include <asm-generic/ipcbuf.h>
+
+#endif /* _ASM_SCORE_IPCBUF_H */
diff --git a/arch/score/include/asm/irq.h b/arch/score/include/asm/irq.h
new file mode 100644
index 0000000..401f670
--- /dev/null
+++ b/arch/score/include/asm/irq.h
@@ -0,0 +1,33 @@
+#ifndef _ASM_SCORE_IRQ_H
+#define _ASM_SCORE_IRQ_H
+
+#define EXCEPTION_VECTOR_BASE_ADDR	0xa0000000
+#define VECTOR_ADDRESS_OFFSET_MODE4	0
+#define VECTOR_ADDRESS_OFFSET_MODE16	1
+
+#define DEBUG_VECTOR_SIZE		(0x4)
+#define DEBUG_VECTOR_BASE_ADDR		((EXCEPTION_VECTOR_BASE_ADDR) + 0x1fc)
+
+#define GENERAL_VECTOR_SIZE		(0x10)
+#define GENERAL_VECTOR_BASE_ADDR	((EXCEPTION_VECTOR_BASE_ADDR) + 0x200)
+
+#define NR_IRQS				64
+#define IRQ_VECTOR_SIZE			(0x10)
+#define IRQ_VECTOR_BASE_ADDR		((EXCEPTION_VECTOR_BASE_ADDR) + 0x210)
+#define IRQ_VECTOR_END_ADDR		((EXCEPTION_VECTOR_BASE_ADDR) + 0x5f0)
+
+#define irq_canonicalize(irq)	(irq)
+
+#define P_INT_PNDL		0x95F50000
+#define P_INT_PNDH		0x95F50004
+#define P_INT_PRIORITY_M	0x95F50008
+#define P_INT_PRIORITY_SG0	0x95F50010
+#define P_INT_PRIORITY_SG1	0x95F50014
+#define P_INT_PRIORITY_SG2	0x95F50018
+#define P_INT_PRIORITY_SG3	0x95F5001C
+#define P_INT_MASKL		0x95F50020
+#define P_INT_MASKH		0x95F50024
+
+#define IRQ_TIMER (7)		/* Timer IRQ number of SPCT6600 */
+
+#endif /* _ASM_SCORE_IRQ_H */
diff --git a/arch/score/include/asm/irq_regs.h b/arch/score/include/asm/irq_regs.h
new file mode 100644
index 0000000..905b7b0
--- /dev/null
+++ b/arch/score/include/asm/irq_regs.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IRQ_REGS_H
+#define _ASM_SCORE_IRQ_REGS_H
+
+#include <asm-generic/irq_regs.h>
+
+#endif /* _ASM_SCORE_IRQ_REGS_H */
diff --git a/arch/score/include/asm/irqflags.h b/arch/score/include/asm/irqflags.h
new file mode 100644
index 0000000..92eeb33
--- /dev/null
+++ b/arch/score/include/asm/irqflags.h
@@ -0,0 +1,111 @@
+#ifndef _ASM_SCORE_IRQFLAGS_H
+#define _ASM_SCORE_IRQFLAGS_H
+
+#ifndef __ASSEMBLY__
+
+#define raw_local_irq_save(x)			\
+{						\
+	__asm__ __volatile__(			\
+		"mfcr	r8, cr0;"		\
+		"li	r9, 0xfffffffe;"	\
+		"nop;"				\
+		"mv	%0, r8;"		\
+		"and	r8, r8, r9;"		\
+		"mtcr	r8, cr0;"		\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"ldi	r9, 0x1;"		\
+		"and	%0, %0, r9;"		\
+		: "=r" (x)			\
+		:				\
+		: "r8", "r9"			\
+		);				\
+}
+
+#define raw_local_irq_restore(x)		\
+{						\
+	__asm__ __volatile__(			\
+		"mfcr	r8, cr0;"		\
+		"ldi	r9, 0x1;"		\
+		"and	%0, %0, r9;"		\
+		"or	r8, r8, %0;"		\
+		"mtcr	r8, cr0;"		\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		:				\
+		: "r"(x)			\
+		: "r8", "r9"			\
+		);				\
+}
+
+#define raw_local_irq_enable(void)		\
+{						\
+	__asm__ __volatile__(			\
+		"mfcr\tr8,cr0;"			\
+		"nop;"				\
+		"nop;"				\
+		"ori\tr8,0x1;"			\
+		"mtcr\tr8,cr0;"			\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		:				\
+		:				\
+		: "r8");			\
+}
+
+#define raw_local_irq_disable(void)		\
+{						\
+	__asm__ __volatile__(			\
+		"mfcr\tr8,cr0;"			\
+		"nop;"				\
+		"nop;"				\
+		"srli\tr8,r8,1;"		\
+		"slli\tr8,r8,1;"		\
+		"mtcr\tr8,cr0;"			\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		:				\
+		:				\
+		: "r8");			\
+}
+
+#define raw_local_save_flags(x)			\
+{						\
+	__asm__ __volatile__(			\
+		"mfcr	r8, cr0;"		\
+		"nop;"				\
+		"nop;"				\
+		"mv	%0, r8;"		\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"nop;"				\
+		"ldi	r9, 0x1;"		\
+		"and	%0, %0, r9;"		\
+		: "=r" (x)			\
+		:				\
+		: "r8", "r9"			\
+		);				\
+}
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+	return !(flags & 1);
+}
+
+#endif
+
+#endif /* _ASM_SCORE_IRQFLAGS_H */
diff --git a/arch/score/include/asm/kdebug.h b/arch/score/include/asm/kdebug.h
new file mode 100644
index 0000000..a666e51
--- /dev/null
+++ b/arch/score/include/asm/kdebug.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_KDEBUG_H
+#define _ASM_SCORE_KDEBUG_H
+
+#include <asm-generic/kdebug.h>
+
+#endif /* _ASM_SCORE_KDEBUG_H */
diff --git a/arch/score/include/asm/kmap_types.h b/arch/score/include/asm/kmap_types.h
new file mode 100644
index 0000000..6c46eb5
--- /dev/null
+++ b/arch/score/include/asm/kmap_types.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_KMAP_TYPES_H
+#define _ASM_SCORE_KMAP_TYPES_H
+
+#include <asm-generic/kmap_types.h>
+
+#endif /* _ASM_SCORE_KMAP_TYPES_H */
diff --git a/arch/score/include/asm/linkage.h b/arch/score/include/asm/linkage.h
new file mode 100644
index 0000000..2580fbb
--- /dev/null
+++ b/arch/score/include/asm/linkage.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_LINKAGE_H
+#define _ASM_SCORE_LINKAGE_H
+
+#endif /* _ASM_SCORE_LINKAGE_H */
diff --git a/arch/score/include/asm/local.h b/arch/score/include/asm/local.h
new file mode 100644
index 0000000..7e02f13
--- /dev/null
+++ b/arch/score/include/asm/local.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_LOCAL_H
+#define _ASM_SCORE_LOCAL_H
+
+#include <asm-generic/local.h>
+
+#endif /* _ASM_SCORE_LOCAL_H */
diff --git a/arch/score/include/asm/mman.h b/arch/score/include/asm/mman.h
new file mode 100644
index 0000000..84d85dd
--- /dev/null
+++ b/arch/score/include/asm/mman.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MMAN_H
+#define _ASM_SCORE_MMAN_H
+
+#include <asm-generic/mman.h>
+
+#endif /* _ASM_SCORE_MMAN_H */
diff --git a/arch/score/include/asm/mmu.h b/arch/score/include/asm/mmu.h
new file mode 100644
index 0000000..676828e
--- /dev/null
+++ b/arch/score/include/asm/mmu.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MMU_H
+#define _ASM_SCORE_MMU_H
+
+typedef unsigned long mm_context_t;
+
+#endif /* _ASM_SCORE_MMU_H */
diff --git a/arch/score/include/asm/mmu_context.h b/arch/score/include/asm/mmu_context.h
new file mode 100644
index 0000000..2644577
--- /dev/null
+++ b/arch/score/include/asm/mmu_context.h
@@ -0,0 +1,113 @@
+#ifndef _ASM_SCORE_MMU_CONTEXT_H
+#define _ASM_SCORE_MMU_CONTEXT_H
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <asm-generic/mm_hooks.h>
+
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+#include <asm/scoreregs.h>
+
+/*
+ * For the fast tlb miss handlers, we keep a per cpu array of pointers
+ * to the current pgd for each processor. Also, the proc. id is stuffed
+ * into the context register.
+ */
+extern unsigned long asid_cache;
+extern unsigned long pgd_current;
+
+#define TLBMISS_HANDLER_SETUP_PGD(pgd) (pgd_current = (unsigned long)(pgd))
+
+#define TLBMISS_HANDLER_SETUP()				\
+do {							\
+	write_c0_context(0);				\
+	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)	\
+} while (0)
+
+/*
+ * All unused by hardware upper bits will be considered
+ * as a software asid extension.
+ */
+#define ASID_VERSION_MASK	0xfffff000
+#define ASID_FIRST_VERSION	0x1000
+
+/* PEVN    --------- VPN ---------- --ASID--- -NA- */
+/* binary: 0000 0000 0000 0000 0000 0000 0001 0000 */
+/* binary: 0000 0000 0000 0000 0000 1111 1111 0000 */
+#define ASID_INC	0x10
+#define ASID_MASK	0xff0
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+				struct task_struct *tsk)
+{}
+
+static inline void
+get_new_mmu_context(struct mm_struct *mm)
+{
+	unsigned long asid = asid_cache + ASID_INC;
+
+	if (!(asid & ASID_MASK)) {
+		local_flush_tlb_all();		/* start new asid cycle */
+		if (!asid)			/* fix version if needed */
+			asid = ASID_FIRST_VERSION;
+	}
+
+	mm->context = asid;
+	asid_cache = asid;
+}
+
+/*
+ * Initialize the context related info for a new mm_struct
+ * instance.
+ */
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	mm->context = 0;
+	return 0;
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+			struct task_struct *tsk)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	if ((next->context ^ asid_cache) & ASID_VERSION_MASK)
+		get_new_mmu_context(next);
+
+	pevn_set(next->context);
+	TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+	local_irq_restore(flags);
+}
+
+/*
+ * Destroy context related info for an mm_struct that is about
+ * to be put to rest.
+ */
+static inline void destroy_context(struct mm_struct *mm)
+{}
+
+static inline void
+deactivate_mm(struct task_struct *task, struct mm_struct *mm)
+{}
+
+/*
+ * After we have set current->mm to a new value, this activates
+ * the context for the new mm so we see the new mappings.
+ */
+static inline void
+activate_mm(struct mm_struct *prev, struct mm_struct *next)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	get_new_mmu_context(next);
+	pevn_set(next->context);
+	TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+	local_irq_restore(flags);
+}
+
+#endif /* _ASM_SCORE_MMU_CONTEXT_H */
diff --git a/arch/score/include/asm/module.h b/arch/score/include/asm/module.h
new file mode 100644
index 0000000..f0b5dc0
--- /dev/null
+++ b/arch/score/include/asm/module.h
@@ -0,0 +1,39 @@
+#ifndef _ASM_SCORE_MODULE_H
+#define _ASM_SCORE_MODULE_H
+
+#include <linux/list.h>
+#include <asm/uaccess.h>
+
+struct mod_arch_specific {
+	/* Data Bus Error exception tables */
+	struct list_head dbe_list;
+	const struct exception_table_entry *dbe_start;
+	const struct exception_table_entry *dbe_end;
+};
+
+typedef uint8_t Elf64_Byte;		/* Type for a 8-bit quantity. */
+
+#define Elf_Shdr	Elf32_Shdr
+#define Elf_Sym		Elf32_Sym
+#define Elf_Ehdr	Elf32_Ehdr
+#define Elf_Addr	Elf32_Addr
+
+/* Given an address, look for it in the exception tables. */
+#ifdef CONFIG_MODULES
+const struct exception_table_entry *search_module_dbetables(unsigned long addr);
+#else
+static inline const struct exception_table_entry
+*search_module_dbetables(unsigned long addr)
+{
+	return NULL;
+}
+#endif
+
+#define MODULE_PROC_FAMILY "SCORE7"
+#define MODULE_KERNEL_TYPE "32BIT "
+#define MODULE_KERNEL_SMTC ""
+
+#define MODULE_ARCH_VERMAGIC \
+	MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC
+
+#endif /* _ASM_SCORE_MODULE_H */
diff --git a/arch/score/include/asm/msgbuf.h b/arch/score/include/asm/msgbuf.h
new file mode 100644
index 0000000..7506721
--- /dev/null
+++ b/arch/score/include/asm/msgbuf.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MSGBUF_H
+#define _ASM_SCORE_MSGBUF_H
+
+#include <asm-generic/msgbuf.h>
+
+#endif /* _ASM_SCORE_MSGBUF_H */
diff --git a/arch/score/include/asm/mutex.h b/arch/score/include/asm/mutex.h
new file mode 100644
index 0000000..10d48fe
--- /dev/null
+++ b/arch/score/include/asm/mutex.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MUTEX_H
+#define _ASM_SCORE_MUTEX_H
+
+#include <asm-generic/mutex-dec.h>
+
+#endif /* _ASM_SCORE_MUTEX_H */
diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h
new file mode 100644
index 0000000..67e9820
--- /dev/null
+++ b/arch/score/include/asm/page.h
@@ -0,0 +1,92 @@
+#ifndef _ASM_SCORE_PAGE_H
+#define _ASM_SCORE_PAGE_H
+
+#include <linux/pfn.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT	(12)
+#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#define PAGE_MASK	(~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#define PAGE_UP(addr)	(((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
+#define PAGE_DOWN(addr)	((addr)&(~((PAGE_SIZE)-1)))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size)	(((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr, size)	((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size)	_ALIGN_UP(addr, size)
+
+/*
+ * PAGE_OFFSET -- the first address of the first page of memory. When not
+ * using MMU this corresponds to the first free page in physical memory (aligned
+ * on a page boundary).
+ */
+#define PAGE_OFFSET		(0xA0000000UL)
+
+#define clear_page(pgaddr)			memset((pgaddr), 0, PAGE_SIZE)
+#define copy_page(to, from)			memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(pgaddr, vaddr, page)	memset((pgaddr), 0, PAGE_SIZE)
+#define copy_user_page(vto, vfrom, vaddr, topg) \
+			memcpy((vto), (vfrom), PAGE_SIZE)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t;		/* page table entry */
+typedef struct { unsigned long pgd; } pgd_t;		/* PGD table entry */
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x)	((x).pte)
+#define pgd_val(x)	((x).pgd)
+#define pgprot_val(x)	((x).pgprot)
+
+#define __pte(x)	((pte_t) { (x) })
+#define __pgd(x)	((pgd_t) { (x) })
+#define __pgprot(x)	((pgprot_t) { (x) })
+
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+extern unsigned long max_pfn;
+
+#define __pa(vaddr)		((unsigned long) (vaddr))
+#define __va(paddr)		((void *) (paddr))
+
+#define phys_to_pfn(phys)	(PFN_DOWN(phys))
+#define pfn_to_phys(pfn)	(PFN_PHYS(pfn))
+
+#define virt_to_pfn(vaddr)	(phys_to_pfn((__pa(vaddr))))
+#define pfn_to_virt(pfn)	__va(pfn_to_phys((pfn)))
+
+#define virt_to_page(vaddr)	(pfn_to_page(virt_to_pfn(vaddr)))
+#define page_to_virt(page)	(pfn_to_virt(page_to_pfn(page)))
+
+#define page_to_phys(page)	(pfn_to_phys(page_to_pfn(page)))
+#define page_to_bus(page)	(page_to_phys(page))
+#define phys_to_page(paddr)	(pfn_to_page(phys_to_pfn(paddr)))
+
+#define pfn_valid(pfn)		((pfn) >= min_low_pfn && (pfn) < max_mapnr)
+
+#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
+
+#endif /* __ASSEMBLY__ */
+
+#define virt_addr_valid(vaddr)	(pfn_valid(virt_to_pfn(vaddr)))
+
+#endif /* __KERNEL__ */
+
+#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
+				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
+
+#endif /* _ASM_SCORE_PAGE_H */
diff --git a/arch/score/include/asm/param.h b/arch/score/include/asm/param.h
new file mode 100644
index 0000000..916b869
--- /dev/null
+++ b/arch/score/include/asm/param.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_PARAM_H
+#define _ASM_SCORE_PARAM_H
+
+#include <asm-generic/param.h>
+
+#endif /* _ASM_SCORE_PARAM_H */
diff --git a/arch/score/include/asm/pci.h b/arch/score/include/asm/pci.h
new file mode 100644
index 0000000..3f3cfd8
--- /dev/null
+++ b/arch/score/include/asm/pci.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_PCI_H
+#define _ASM_SCORE_PCI_H
+
+#endif /* _ASM_SCORE_PCI_H */
diff --git a/arch/score/include/asm/percpu.h b/arch/score/include/asm/percpu.h
new file mode 100644
index 0000000..e7bd4e0
--- /dev/null
+++ b/arch/score/include/asm/percpu.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_PERCPU_H
+#define _ASM_SCORE_PERCPU_H
+
+#include <asm-generic/percpu.h>
+
+#endif /* _ASM_SCORE_PERCPU_H */
diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h
new file mode 100644
index 0000000..28dacc1
--- /dev/null
+++ b/arch/score/include/asm/pgalloc.h
@@ -0,0 +1,83 @@
+#ifndef _ASM_SCORE_PGALLOC_H
+#define _ASM_SCORE_PGALLOC_H
+
+#include <linux/mm.h>
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+	pte_t *pte)
+{
+	set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+	pgtable_t pte)
+{
+	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+
+#define pmd_pgtable(pmd)	pmd_page(pmd)
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+	pgd_t *ret, *init;
+
+	ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
+	if (ret) {
+		init = pgd_offset(&init_mm, 0UL);
+		pgd_init((unsigned long)ret);
+		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
+		(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+	}
+
+	return ret;
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	free_pages((unsigned long)pgd, PGD_ORDER);
+}
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+	unsigned long address)
+{
+	pte_t *pte;
+
+	pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
+					PTE_ORDER);
+
+	return pte;
+}
+
+static inline struct page *pte_alloc_one(struct mm_struct *mm,
+	unsigned long address)
+{
+	struct page *pte;
+
+	pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
+	if (pte) {
+		clear_highpage(pte);
+		pgtable_page_ctor(pte);
+	}
+	return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	free_pages((unsigned long)pte, PTE_ORDER);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+	pgtable_page_dtor(pte);
+	__free_pages(pte, PTE_ORDER);
+}
+
+#define __pte_free_tlb(tlb, pte)			\
+do {							\
+	pgtable_page_dtor(pte);				\
+	tlb_remove_page((tlb), pte);			\
+} while (0)
+
+#define check_pgt_cache()		do {} while (0)
+
+#endif /* _ASM_SCORE_PGALLOC_H */
diff --git a/arch/score/include/asm/pgtable-bits.h b/arch/score/include/asm/pgtable-bits.h
new file mode 100644
index 0000000..ca16d35
--- /dev/null
+++ b/arch/score/include/asm/pgtable-bits.h
@@ -0,0 +1,23 @@
+#ifndef _ASM_SCORE_PGTABLE_BITS_H
+#define _ASM_SCORE_PGTABLE_BITS_H
+
+#define _PAGE_ACCESSED			(1<<5)	/* implemented in software */
+#define _PAGE_READ			(1<<6)	/* implemented in software */
+#define _PAGE_WRITE			(1<<7)	/* implemented in software */
+#define _PAGE_PRESENT			(1<<9)	/* implemented in software */
+#define _PAGE_MODIFIED			(1<<10)	/* implemented in software */
+#define _PAGE_FILE			(1<<10)
+
+#define _PAGE_GLOBAL			(1<<0)
+#define _PAGE_VALID			(1<<1)
+#define _PAGE_SILENT_READ		(1<<1)	/* synonym */
+#define _PAGE_DIRTY			(1<<2)	/* Write bit */
+#define _PAGE_SILENT_WRITE		(1<<2)
+#define _PAGE_CACHE			(1<<3)	/* cache */
+#define _CACHE_MASK			(1<<3)
+#define _PAGE_BUFFERABLE		(1<<4)	/*Fallow Spec. */
+
+#define _PAGE_CHG_MASK			\
+	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE)
+
+#endif /* _ASM_SCORE_PGTABLE_BITS_H */
diff --git a/arch/score/include/asm/pgtable.h b/arch/score/include/asm/pgtable.h
new file mode 100644
index 0000000..0f7177a
--- /dev/null
+++ b/arch/score/include/asm/pgtable.h
@@ -0,0 +1,267 @@
+#ifndef _ASM_SCORE_PGTABLE_H
+#define _ASM_SCORE_PGTABLE_H
+
+#include <linux/const.h>
+#include <asm-generic/pgtable-nopmd.h>
+
+#include <asm/fixmap.h>
+#include <asm/setup.h>
+#include <asm/pgtable-bits.h>
+
+extern void load_pgd(unsigned long pg_dir);
+extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+#define PGDIR_SHIFT	22
+#define PGDIR_SIZE	(_AC(1, UL) << PGDIR_SHIFT)
+#define PGDIR_MASK	(~(PGDIR_SIZE - 1))
+
+/*
+ * Entries per page directory level: we use two-level, so
+ * we don't really have any PUD/PMD directory physically.
+ */
+#define PGD_ORDER	0
+#define PTE_ORDER	0
+
+#define PTRS_PER_PGD	1024
+#define PTRS_PER_PTE	1024
+
+#define USER_PTRS_PER_PGD	(0x80000000UL/PGDIR_SIZE)
+#define FIRST_USER_ADDRESS	0
+
+#define VMALLOC_START		(0xc0000000UL)
+
+#define PKMAP_BASE		(0xfd000000UL)
+
+#define VMALLOC_END		(FIXADDR_START - 2*PAGE_SIZE)
+
+#define pte_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \
+		__FILE__, __LINE__, pte_val(e))
+#define pgd_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \
+		__FILE__, __LINE__, pgd_val(e))
+
+/*
+ * Empty pgd/pmd entries point to the invalid_pte_table.
+ */
+static inline int pmd_none(pmd_t pmd)
+{
+	return pmd_val(pmd) == (unsigned long) invalid_pte_table;
+}
+
+#define pmd_bad(pmd)		(pmd_val(pmd) & ~PAGE_MASK)
+
+static inline int pmd_present(pmd_t pmd)
+{
+	return pmd_val(pmd) != (unsigned long) invalid_pte_table;
+}
+
+static inline void pmd_clear(pmd_t *pmdp)
+{
+	pmd_val(*pmdp) = ((unsigned long) invalid_pte_table);
+}
+
+#define pte_page(x)		pfn_to_page(pte_pfn(x))
+#define pte_pfn(x)		((unsigned long)((x).pte >> PAGE_SHIFT))
+#define pfn_pte(pfn, prot)	\
+	__pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
+
+#define __pgd_offset(address)	pgd_index(address)
+#define __pud_offset(address)	(((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+#define __pmd_offset(address)	(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+
+/* to find an entry in a kernel page-table-directory */
+#define pgd_offset_k(address)	pgd_offset(&init_mm, address)
+#define pgd_index(address)	(((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
+
+/* to find an entry in a page-table-directory */
+#define pgd_offset(mm, addr)	((mm)->pgd + pgd_index(addr))
+
+/* Find an entry in the third-level page table.. */
+#define __pte_offset(address)		\
+	(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset(dir, address)	\
+	((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
+#define pte_offset_kernel(dir, address)	\
+	((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
+
+#define pte_offset_map(dir, address)	\
+	((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
+#define pte_offset_map_nested(dir, address)	\
+	((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
+#define pte_unmap(pte) ((void)(pte))
+#define pte_unmap_nested(pte) ((void)(pte))
+
+/*
+ * Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken,
+ * split up 30 bits of offset into this range:
+ */
+#define PTE_FILE_MAX_BITS	30
+#define pte_to_pgoff(_pte)		\
+	(((_pte).pte & 0x1ff) | (((_pte).pte >> 11) << 9))
+#define pgoff_to_pte(off)		\
+	((pte_t) {((off) & 0x1ff) | (((off) >> 9) << 11) | _PAGE_FILE})
+#define __pte_to_swp_entry(pte)		\
+	((swp_entry_t) { pte_val(pte)})
+#define __swp_entry_to_pte(x)	((pte_t) {(x).val})
+
+#define __P000 __pgprot(0)
+#define __P001 __pgprot(0)
+#define __P010 __pgprot(0)
+#define __P011 __pgprot(0)
+#define __P100 __pgprot(0)
+#define __P101 __pgprot(0)
+#define __P110 __pgprot(0)
+#define __P111 __pgprot(0)
+
+#define __S000 __pgprot(0)
+#define __S001 __pgprot(0)
+#define __S010 __pgprot(0)
+#define __S011 __pgprot(0)
+#define __S100 __pgprot(0)
+#define __S101 __pgprot(0)
+#define __S110 __pgprot(0)
+#define __S111 __pgprot(0)
+
+#define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd)))
+#define mk_pte(page, prot)	pfn_pte(page_to_pfn(page), prot)
+static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
+
+#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
+#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
+#define pte_clear(mm, addr, xp)		\
+	do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
+
+#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)		\
+		remap_pfn_range(vma, vaddr, pfn, size, prot)
+
+#define pgd_present(pgd)	(1) /* pages are always present on non MMU */
+#define pgd_none(pgd)		(0)
+#define pgd_bad(pgd)		(0)
+#define pgd_clear(pgdp)
+
+#define kern_addr_valid(addr)	(1)
+#define	pmd_offset(a, b)	((void *) 0)
+#define pmd_page_vaddr(pmd)	pmd_val(pmd)
+
+#define pte_none(pte)		(!(pte_val(pte) & ~_PAGE_GLOBAL))
+#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
+
+#define pud_offset(pgd, address) ((pud_t *) pgd)
+
+#define PAGE_NONE		__pgprot(0) /* these mean nothing to non MMU */
+#define PAGE_SHARED		__pgprot(0) /* these mean nothing to non MMU */
+#define PAGE_COPY		__pgprot(0) /* these mean nothing to non MMU */
+#define PAGE_READONLY		__pgprot(0) /* these mean nothing to non MMU */
+#define PAGE_KERNEL		__pgprot(0) /* these mean nothing to non MMU */
+
+#define pgprot_noncached(x)	(x)
+
+#define __swp_type(x)		(0)
+#define __swp_offset(x)		(0)
+#define __swp_entry(typ, off)	((swp_entry_t) { ((typ) | ((off) << 7)) })
+
+#define ZERO_PAGE(vaddr)	({ BUG(); NULL; })
+
+#define swapper_pg_dir ((pgd_t *) NULL)
+
+#define pgtable_cache_init()	do {} while (0)
+
+#define arch_enter_lazy_cpu_mode()	do {} while (0)
+
+static inline int pte_write(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_WRITE;
+}
+
+static inline int pte_dirty(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_MODIFIED;
+}
+
+static inline int pte_young(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_ACCESSED;
+}
+
+static inline int pte_file(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_FILE;
+}
+
+#define pte_special(pte)	(0)
+
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+	pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
+	return pte;
+}
+
+static inline pte_t pte_mkclean(pte_t pte)
+{
+	pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
+	return pte;
+}
+
+static inline pte_t pte_mkold(pte_t pte)
+{
+	pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
+	return pte;
+}
+
+static inline pte_t pte_mkwrite(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_WRITE;
+	if (pte_val(pte) & _PAGE_MODIFIED)
+		pte_val(pte) |= _PAGE_SILENT_WRITE;
+	return pte;
+}
+
+static inline pte_t pte_mkdirty(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_MODIFIED;
+	if (pte_val(pte) & _PAGE_WRITE)
+		pte_val(pte) |= _PAGE_SILENT_WRITE;
+	return pte;
+}
+
+static inline pte_t pte_mkyoung(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_ACCESSED;
+	if (pte_val(pte) & _PAGE_READ)
+		pte_val(pte) |= _PAGE_SILENT_READ;
+	return pte;
+}
+
+#define set_pmd(pmdptr, pmdval)		\
+	 do { *(pmdptr) = (pmdval); } while (0)
+#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
+
+extern unsigned long pgd_current;
+extern void paging_init(void);
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+	return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
+}
+
+extern void __update_tlb(struct vm_area_struct *vma,
+	unsigned long address,	pte_t pte);
+extern void __update_cache(struct vm_area_struct *vma,
+	unsigned long address,	pte_t pte);
+
+static inline void update_mmu_cache(struct vm_area_struct *vma,
+	unsigned long address, pte_t pte)
+{
+	__update_tlb(vma, address, pte);
+	__update_cache(vma, address, pte);
+}
+
+#ifndef __ASSEMBLY__
+#include <asm-generic/pgtable.h>
+
+void setup_memory(void);
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_PGTABLE_H */
diff --git a/arch/score/include/asm/poll.h b/arch/score/include/asm/poll.h
new file mode 100644
index 0000000..18532db
--- /dev/null
+++ b/arch/score/include/asm/poll.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_POLL_H
+#define _ASM_SCORE_POLL_H
+
+#include <asm-generic/poll.h>
+
+#endif /* _ASM_SCORE_POLL_H */
diff --git a/arch/score/include/asm/posix_types.h b/arch/score/include/asm/posix_types.h
new file mode 100644
index 0000000..b88acf8
--- /dev/null
+++ b/arch/score/include/asm/posix_types.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_POSIX_TYPES_H
+#define _ASM_SCORE_POSIX_TYPES_H
+
+#include <asm-generic/posix_types.h>
+
+#endif /* _ASM_SCORE_POSIX_TYPES_H */
diff --git a/arch/score/include/asm/processor.h b/arch/score/include/asm/processor.h
new file mode 100644
index 0000000..7e22f21
--- /dev/null
+++ b/arch/score/include/asm/processor.h
@@ -0,0 +1,106 @@
+#ifndef _ASM_SCORE_PROCESSOR_H
+#define _ASM_SCORE_PROCESSOR_H
+
+#include <linux/cpumask.h>
+#include <linux/threads.h>
+
+#include <asm/segment.h>
+
+struct task_struct;
+
+/*
+ * System setup and hardware flags..
+ */
+extern void (*cpu_wait)(void);
+
+extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+extern void start_thread(struct pt_regs *regs,
+			unsigned long pc, unsigned long sp);
+extern unsigned long get_wchan(struct task_struct *p);
+
+/*
+ * Return current * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l; })
+
+#define cpu_relax()		barrier()
+#define release_thread(thread)	do {} while (0)
+#define prepare_to_copy(tsk)	do {} while (0)
+
+/*
+ * User space process size: 2GB. This is hardcoded into a few places,
+ * so don't change it unless you know what you are doing.
+ */
+#define TASK_SIZE	0x7fff8000UL
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE	((TASK_SIZE / 3) & ~(PAGE_SIZE))
+
+#ifdef __KERNEL__
+#define STACK_TOP	TASK_SIZE
+#define STACK_TOP_MAX	TASK_SIZE
+#endif
+
+/*
+ * If you change thread_struct remember to change the #defines below too!
+ */
+struct thread_struct {
+	unsigned long reg0, reg2, reg3;
+	unsigned long reg12, reg13, reg14, reg15, reg16;
+	unsigned long reg17, reg18, reg19, reg20, reg21;
+
+	unsigned long cp0_psr;
+	unsigned long cp0_ema;		/* Last user fault */
+	unsigned long cp0_badvaddr;	/* Last user fault */
+	unsigned long cp0_baduaddr;	/* Last kernel fault accessing USEG */
+	unsigned long error_code;
+	unsigned long trap_no;
+
+	unsigned long mflags;
+	unsigned long reg29;
+
+	unsigned long single_step;
+	unsigned long ss_nextcnt;
+
+	unsigned long insn1_type;
+	unsigned long addr1;
+	unsigned long insn1;
+
+	unsigned long insn2_type;
+	unsigned long addr2;
+	unsigned long insn2;
+
+	mm_segment_t current_ds;
+};
+
+#define INIT_THREAD {						\
+	.reg0			= 0,				\
+	.reg2			= 0,				\
+	.reg3			= 0,				\
+	.reg12			= 0,				\
+	.reg13			= 0,				\
+	.reg14			= 0,				\
+	.reg15			= 0,				\
+	.reg16			= 0,				\
+	.reg17			= 0,				\
+	.reg18			= 0,				\
+	.reg19			= 0,				\
+	.reg20			= 0,				\
+	.reg21			= 0,				\
+	.cp0_psr		= 0,				\
+	.error_code		= 0,				\
+	.trap_no		= 0,				\
+}
+
+#define kstk_tos(tsk)		\
+	((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
+#define task_pt_regs(tsk)	((struct pt_regs *)kstk_tos(tsk) - 1)
+
+#define KSTK_EIP(tsk)		(task_pt_regs(tsk)->cp0_epc)
+#define KSTK_ESP(tsk)		(task_pt_regs(tsk)->regs[29])
+
+#endif /* _ASM_SCORE_PROCESSOR_H */
diff --git a/arch/score/include/asm/ptrace.h b/arch/score/include/asm/ptrace.h
new file mode 100644
index 0000000..1a4900a
--- /dev/null
+++ b/arch/score/include/asm/ptrace.h
@@ -0,0 +1,87 @@
+#ifndef _ASM_SCORE_PTRACE_H
+#define _ASM_SCORE_PTRACE_H
+
+#define PC		32
+#define CONDITION	33
+#define ECR		34
+#define EMA		35
+#define CEH		36
+#define CEL		37
+#define COUNTER		38
+#define LDCR		39
+#define STCR		40
+#define PSR		41
+
+#define SINGLESTEP16_INSN	0x7006
+#define SINGLESTEP32_INSN	0x840C8000
+#define BREAKPOINT16_INSN	0x7002		/* work on SPG300 */
+#define BREAKPOINT32_INSN	0x84048000	/* work on SPG300 */
+
+/* Define instruction mask */
+#define INSN32_MASK	0x80008000
+
+#define J32	0x88008000	/* 1_00010_0000000000_1_000000000000000 */
+#define J32M	0xFC008000	/* 1_11111_0000000000_1_000000000000000 */
+
+#define B32	0x90008000	/* 1_00100_0000000000_1_000000000000000 */
+#define B32M	0xFC008000
+#define BL32	0x90008001	/* 1_00100_0000000000_1_000000000000001 */
+#define BL32M	B32
+#define BR32	0x80008008	/* 1_00000_0000000000_1_00000000_000100_0 */
+#define BR32M	0xFFE0807E
+#define BRL32	0x80008009	/* 1_00000_0000000000_1_00000000_000100_1 */
+#define BRL32M	BR32M
+
+#define B32_SET	(J32 | B32 | BL32 | BR32 | BRL32)
+
+#define J16	0x3000		/* 0_011_....... */
+#define J16M	0xF000
+#define B16	0x4000		/* 0_100_....... */
+#define B16M	0xF000
+#define BR16	0x0004		/* 0_000.......0100 */
+#define BR16M	0xF00F
+#define B16_SET (J16 | B16 | BR16)
+
+
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call/exception. As usual the registers k0/k1 aren't being saved.
+ */
+struct pt_regs {
+	unsigned long pad0[6];
+	unsigned long orig_r4;
+	unsigned long orig_r7;
+	unsigned long regs[32];
+
+	unsigned long cel;
+	unsigned long ceh;
+
+	unsigned long sr0;	/* cnt */
+	unsigned long sr1;	/* lcr */
+	unsigned long sr2;	/* scr */
+
+	unsigned long cp0_epc;
+	unsigned long cp0_ema;
+	unsigned long cp0_psr;
+	unsigned long cp0_ecr;
+	unsigned long cp0_condition;
+
+	long is_syscall;
+};
+
+#ifdef __KERNEL__
+
+/*
+ * Does the process account for user or for system time?
+ */
+#define user_mode(regs) 	((regs->cp0_psr & 8) == 8)
+
+#define instruction_pointer(regs) (0)
+#define profile_pc(regs) instruction_pointer(regs)
+
+extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
+extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
+extern void clear_single_step(struct task_struct *);
+#endif
+
+#endif /* _ASM_SCORE_PTRACE_H */
diff --git a/arch/score/include/asm/resource.h b/arch/score/include/asm/resource.h
new file mode 100644
index 0000000..9ce22bc
--- /dev/null
+++ b/arch/score/include/asm/resource.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_RESOURCE_H
+#define _ASM_SCORE_RESOURCE_H
+
+#include <asm-generic/resource.h>
+
+#endif /* _ASM_SCORE_RESOURCE_H */
diff --git a/arch/score/include/asm/scatterlist.h b/arch/score/include/asm/scatterlist.h
new file mode 100644
index 0000000..9f533b8
--- /dev/null
+++ b/arch/score/include/asm/scatterlist.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SCATTERLIST_H
+#define _ASM_SCORE_SCATTERLIST_H
+
+#include <asm-generic/scatterlist.h>
+
+#endif /* _ASM_SCORE_SCATTERLIST_H */
diff --git a/arch/score/include/asm/scoreregs.h b/arch/score/include/asm/scoreregs.h
new file mode 100644
index 0000000..d0ad292
--- /dev/null
+++ b/arch/score/include/asm/scoreregs.h
@@ -0,0 +1,51 @@
+#ifndef _ASM_SCORE_SCOREREGS_H
+#define _ASM_SCORE_SCOREREGS_H
+
+#include <linux/linkage.h>
+
+/* TIMER register */
+#define TIME0BASE		0x96080000
+#define P_TIMER0_CTRL		(TIME0BASE + 0x00)
+#define P_TIMER0_CPP_CTRL	(TIME0BASE + 0x04)
+#define P_TIMER0_PRELOAD	(TIME0BASE + 0x08)
+#define P_TIMER0_CPP_REG	(TIME0BASE + 0x0C)
+#define P_TIMER0_UPCNT		(TIME0BASE + 0x10)
+
+/* Timer Controller Register */
+/* bit 0 Timer enable */
+#define TMR_DISABLE	0x0000
+#define TMR_ENABLE	0x0001
+
+/* bit 1 Interrupt enable */
+#define TMR_IE_DISABLE	0x0000
+#define TMR_IE_ENABLE	0x0002
+
+/* bit 2 Output enable */
+#define TMR_OE_DISABLE	0x0004
+#define TMR_OE_ENABLE	0x0000
+
+/* bit4 Up/Down counting selection */
+#define TMR_UD_DOWN	0x0000
+#define TMR_UD_UP	0x0010
+
+/* bit5 Up/Down counting control selection */
+#define TMR_UDS_UD	0x0000
+#define TMR_UDS_EXTUD	0x0020
+
+/* bit6 Time output mode */
+#define TMR_OM_TOGGLE	0x0000
+#define TMR_OM_PILSE	0x0040
+
+/* bit 8..9 External input active edge selection */
+#define TMR_ES_PE	0x0000
+#define TMR_ES_NE	0x0100
+#define TMR_ES_BOTH	0x0200
+
+/* bit 10..11 Operating mode */
+#define TMR_M_FREE	0x0000 /* free running timer mode */
+#define TMR_M_PERIODIC	0x0400 /* periodic timer mode */
+#define TMR_M_FC	0x0800 /* free running counter mode */
+#define TMR_M_PC	0x0c00 /* periodic counter mode */
+
+#define SYSTEM_CLOCK		(27*1000000/4)		/* 27 MHz */
+#endif /* _ASM_SCORE_SCOREREGS_H */
diff --git a/arch/score/include/asm/sections.h b/arch/score/include/asm/sections.h
new file mode 100644
index 0000000..9441d23
--- /dev/null
+++ b/arch/score/include/asm/sections.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SECTIONS_H
+#define _ASM_SCORE_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif /* _ASM_SCORE_SECTIONS_H */
diff --git a/arch/score/include/asm/segment.h b/arch/score/include/asm/segment.h
new file mode 100644
index 0000000..e16cf6a
--- /dev/null
+++ b/arch/score/include/asm/segment.h
@@ -0,0 +1,21 @@
+#ifndef _ASM_SCORE_SEGMENT_H
+#define _ASM_SCORE_SEGMENT_H
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+	unsigned long seg;
+} mm_segment_t;
+
+#define KERNEL_DS	((mm_segment_t){0})
+#define USER_DS	KERNEL_DS
+
+# define get_ds()	(KERNEL_DS)
+# define get_fs()	(current_thread_info()->addr_limit)
+# define set_fs(x)	\
+	do { current_thread_info()->addr_limit = (x); } while (0)
+
+# define segment_eq(a, b)	((a).seg == (b).seg)
+
+# endif /* __ASSEMBLY__ */
+#endif /* _ASM_SCORE_SEGMENT_H */
diff --git a/arch/score/include/asm/sembuf.h b/arch/score/include/asm/sembuf.h
new file mode 100644
index 0000000..dae5e83
--- /dev/null
+++ b/arch/score/include/asm/sembuf.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SEMBUF_H
+#define _ASM_SCORE_SEMBUF_H
+
+#include <asm-generic/sembuf.h>
+
+#endif /* _ASM_SCORE_SEMBUF_H */
diff --git a/arch/score/include/asm/setup.h b/arch/score/include/asm/setup.h
new file mode 100644
index 0000000..de89eff
--- /dev/null
+++ b/arch/score/include/asm/setup.h
@@ -0,0 +1,40 @@
+#ifndef _ASM_SCORE_SETUP_H
+#define _ASM_SCORE_SETUP_H
+
+#define COMMAND_LINE_SIZE	256
+#define MEM_SIZE		0x2000000
+
+#ifdef __KERNEL__
+
+extern void pagetable_init(void);
+extern void pgd_init(unsigned long page);
+
+extern void setup_early_printk(void);
+extern void cpu_cache_init(void);
+extern void tlb_init(void);
+
+extern void handle_nmi(void);
+extern void handle_adelinsn(void);
+extern void handle_adedata(void);
+extern void handle_ibe(void);
+extern void handle_pel(void);
+extern void handle_sys(void);
+extern void handle_ccu(void);
+extern void handle_ri(void);
+extern void handle_tr(void);
+extern void handle_ades(void);
+extern void handle_cee(void);
+extern void handle_cpe(void);
+extern void handle_dve(void);
+extern void handle_dbe(void);
+extern void handle_reserved(void);
+extern void handle_tlb_refill(void);
+extern void handle_tlb_invaild(void);
+extern void handle_mod(void);
+extern void debug_exception_vector(void);
+extern void general_exception_vector(void);
+extern void interrupt_exception_vector(void);
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_SCORE_SETUP_H */
diff --git a/arch/score/include/asm/shmbuf.h b/arch/score/include/asm/shmbuf.h
new file mode 100644
index 0000000..c85b242
--- /dev/null
+++ b/arch/score/include/asm/shmbuf.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SHMBUF_H
+#define _ASM_SCORE_SHMBUF_H
+
+#include <asm-generic/shmbuf.h>
+
+#endif /* _ASM_SCORE_SHMBUF_H */
diff --git a/arch/score/include/asm/shmparam.h b/arch/score/include/asm/shmparam.h
new file mode 100644
index 0000000..1d60813
--- /dev/null
+++ b/arch/score/include/asm/shmparam.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SHMPARAM_H
+#define _ASM_SCORE_SHMPARAM_H
+
+#include <asm-generic/shmparam.h>
+
+#endif /* _ASM_SCORE_SHMPARAM_H */
diff --git a/arch/score/include/asm/sigcontext.h b/arch/score/include/asm/sigcontext.h
new file mode 100644
index 0000000..5ffda39
--- /dev/null
+++ b/arch/score/include/asm/sigcontext.h
@@ -0,0 +1,22 @@
+#ifndef _ASM_SCORE_SIGCONTEXT_H
+#define _ASM_SCORE_SIGCONTEXT_H
+
+/*
+ * Keep this struct definition in sync with the sigcontext fragment
+ * in arch/score/tools/offset.c
+ */
+struct sigcontext {
+	unsigned int		sc_regmask;
+	unsigned int		sc_psr;
+	unsigned int		sc_condition;
+	unsigned long		sc_pc;
+	unsigned long		sc_regs[32];
+	unsigned int		sc_ssflags;
+	unsigned int		sc_mdceh;
+	unsigned int		sc_mdcel;
+	unsigned int		sc_ecr;
+	unsigned long		sc_ema;
+	unsigned long		sc_sigset[4];
+};
+
+#endif /* _ASM_SCORE_SIGCONTEXT_H */
diff --git a/arch/score/include/asm/siginfo.h b/arch/score/include/asm/siginfo.h
new file mode 100644
index 0000000..87ca356
--- /dev/null
+++ b/arch/score/include/asm/siginfo.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SIGINFO_H
+#define _ASM_SCORE_SIGINFO_H
+
+#include <asm-generic/siginfo.h>
+
+#endif /* _ASM_SCORE_SIGINFO_H */
diff --git a/arch/score/include/asm/signal.h b/arch/score/include/asm/signal.h
new file mode 100644
index 0000000..2605bc0
--- /dev/null
+++ b/arch/score/include/asm/signal.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SIGNAL_H
+#define _ASM_SCORE_SIGNAL_H
+
+#include <asm-generic/signal.h>
+
+#endif /* _ASM_SCORE_SIGNAL_H */
diff --git a/arch/score/include/asm/socket.h b/arch/score/include/asm/socket.h
new file mode 100644
index 0000000..612a70e
--- /dev/null
+++ b/arch/score/include/asm/socket.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SOCKET_H
+#define _ASM_SCORE_SOCKET_H
+
+#include <asm-generic/socket.h>
+
+#endif /* _ASM_SCORE_SOCKET_H */
diff --git a/arch/score/include/asm/sockios.h b/arch/score/include/asm/sockios.h
new file mode 100644
index 0000000..ba825648
--- /dev/null
+++ b/arch/score/include/asm/sockios.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SOCKIOS_H
+#define _ASM_SCORE_SOCKIOS_H
+
+#include <asm-generic/sockios.h>
+
+#endif /* _ASM_SCORE_SOCKIOS_H */
diff --git a/arch/score/include/asm/stat.h b/arch/score/include/asm/stat.h
new file mode 100644
index 0000000..5037055
--- /dev/null
+++ b/arch/score/include/asm/stat.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_STAT_H
+#define _ASM_SCORE_STAT_H
+
+#include <asm-generic/stat.h>
+
+#endif /* _ASM_SCORE_STAT_H */
diff --git a/arch/score/include/asm/statfs.h b/arch/score/include/asm/statfs.h
new file mode 100644
index 0000000..36e4100
--- /dev/null
+++ b/arch/score/include/asm/statfs.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_STATFS_H
+#define _ASM_SCORE_STATFS_H
+
+#include <asm-generic/statfs.h>
+
+#endif /* _ASM_SCORE_STATFS_H */
diff --git a/arch/score/include/asm/string.h b/arch/score/include/asm/string.h
new file mode 100644
index 0000000..8a6bf50
--- /dev/null
+++ b/arch/score/include/asm/string.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_STRING_H
+#define _ASM_SCORE_STRING_H
+
+extern void *memset(void *__s, int __c, size_t __count);
+extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+
+#endif /* _ASM_SCORE_STRING_H */
diff --git a/arch/score/include/asm/swab.h b/arch/score/include/asm/swab.h
new file mode 100644
index 0000000..fadc3cc
--- /dev/null
+++ b/arch/score/include/asm/swab.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SWAB_H
+#define _ASM_SCORE_SWAB_H
+
+#include <asm-generic/swab.h>
+
+#endif /* _ASM_SCORE_SWAB_H */
diff --git a/arch/score/include/asm/syscalls.h b/arch/score/include/asm/syscalls.h
new file mode 100644
index 0000000..00c28e0
--- /dev/null
+++ b/arch/score/include/asm/syscalls.h
@@ -0,0 +1,9 @@
+#ifndef _ASM_SCORE_SYSCALLS_H
+#define _ASM_SCORE_SYSCALLS_H
+
+asmlinkage long sys_clone(int flags, unsigned long stack, struct pt_regs *regs);
+#define sys_clone sys_clone
+
+#include <asm-generic/syscalls.h>
+
+#endif /* _ASM_SCORE_SYSCALLS_H */
diff --git a/arch/score/include/asm/system.h b/arch/score/include/asm/system.h
new file mode 100644
index 0000000..589d5c7
--- /dev/null
+++ b/arch/score/include/asm/system.h
@@ -0,0 +1,90 @@
+#ifndef _ASM_SCORE_SYSTEM_H
+#define _ASM_SCORE_SYSTEM_H
+
+#include <linux/types.h>
+#include <linux/irqflags.h>
+
+struct pt_regs;
+struct task_struct;
+
+extern void *resume(void *last, void *next, void *next_ti);
+
+#define switch_to(prev, next, last)				\
+do {								\
+	(last) = resume(prev, next, task_thread_info(next));	\
+} while (0)
+
+#define finish_arch_switch(prev)	do {} while (0)
+
+typedef void (*vi_handler_t)(void);
+extern unsigned long arch_align_stack(unsigned long sp);
+
+#define mb()		barrier()
+#define rmb()		barrier()
+#define wmb()		barrier()
+#define smp_mb()	barrier()
+#define smp_rmb()	barrier()
+#define smp_wmb()	barrier()
+
+#define read_barrier_depends()		do {} while (0)
+#define smp_read_barrier_depends()	do {} while (0)
+
+#define set_mb(var, value) 		do {var = value; wmb(); } while (0)
+
+#define __HAVE_ARCH_CMPXCHG	1
+
+#include <asm-generic/cmpxchg-local.h>
+
+#ifndef __ASSEMBLY__
+
+struct __xchg_dummy { unsigned long a[100]; };
+#define __xg(x) ((struct __xchg_dummy *)(x))
+
+static inline
+unsigned long __xchg(volatile unsigned long *m, unsigned long val)
+{
+	unsigned long retval;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	retval = *m;
+	*m = val;
+	local_irq_restore(flags);
+	return retval;
+}
+
+#define xchg(ptr, v)						\
+	((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr),	\
+					(unsigned long)(v)))
+
+static inline unsigned long __cmpxchg(volatile unsigned long *m,
+				unsigned long old, unsigned long new)
+{
+	unsigned long retval;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	retval = *m;
+	if (retval == old)
+		*m = new;
+	local_irq_restore(flags);
+	return retval;
+}
+
+#define cmpxchg(ptr, o, n)					\
+	((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr),	\
+					(unsigned long)(o),	\
+					(unsigned long)(n)))
+
+extern void __die(const char *, struct pt_regs *, const char *,
+	const char *, unsigned long) __attribute__((noreturn));
+extern void __die_if_kernel(const char *, struct pt_regs *, const char *,
+	const char *, unsigned long);
+
+#define die(msg, regs)							\
+	__die(msg, regs, __FILE__ ":", __func__, __LINE__)
+#define die_if_kernel(msg, regs)					\
+	__die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__)
+
+#endif /* !__ASSEMBLY__ */
+#endif /* _ASM_SCORE_SYSTEM_H */
diff --git a/arch/score/include/asm/termbits.h b/arch/score/include/asm/termbits.h
new file mode 100644
index 0000000..9a95c14
--- /dev/null
+++ b/arch/score/include/asm/termbits.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TERMBITS_H
+#define _ASM_SCORE_TERMBITS_H
+
+#include <asm-generic/termbits.h>
+
+#endif /* _ASM_SCORE_TERMBITS_H */
diff --git a/arch/score/include/asm/termios.h b/arch/score/include/asm/termios.h
new file mode 100644
index 0000000..40984e8
--- /dev/null
+++ b/arch/score/include/asm/termios.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TERMIOS_H
+#define _ASM_SCORE_TERMIOS_H
+
+#include <asm-generic/termios.h>
+
+#endif /* _ASM_SCORE_TERMIOS_H */
diff --git a/arch/score/include/asm/thread_info.h b/arch/score/include/asm/thread_info.h
new file mode 100644
index 0000000..0af8ca0
--- /dev/null
+++ b/arch/score/include/asm/thread_info.h
@@ -0,0 +1,103 @@
+#ifndef _ASM_SCORE_THREAD_INFO_H
+#define _ASM_SCORE_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#define KU_MASK	0x08
+#define KU_USER	0x08
+#define KU_KERN	0x00
+
+#ifndef __ASSEMBLY__
+
+#include <asm/processor.h>
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants
+ *   must also be changed
+ */
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	struct exec_domain	*exec_domain;	/* execution domain */
+	unsigned long		flags;		/* low level flags */
+	unsigned long		tp_value;	/* thread pointer */
+	__u32			cpu;		/* current CPU */
+
+	/* 0 => preemptable, < 0 => BUG */
+	int			preempt_count;
+
+	/*
+	 * thread address space:
+	 * 0-0xBFFFFFFF for user-thead
+	 * 0-0xFFFFFFFF for kernel-thread
+	 */
+	mm_segment_t		addr_limit;
+	struct restart_block	restart_block;
+	struct pt_regs		*regs;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.exec_domain	= &default_exec_domain,	\
+	.cpu		= 0,			\
+	.preempt_count	= 1,			\
+	.addr_limit	= KERNEL_DS,		\
+	.restart_block	= {			\
+		.fn = do_no_restart_syscall,	\
+	},					\
+}
+
+#define init_thread_info	(init_thread_union.thread_info)
+#define init_stack		(init_thread_union.stack)
+
+/* How to get the thread information struct from C. */
+register struct thread_info *__current_thread_info __asm__("r28");
+#define current_thread_info()	__current_thread_info
+
+/* thread information allocation */
+#define THREAD_SIZE_ORDER 	(1)
+#define THREAD_SIZE 		(PAGE_SIZE << THREAD_SIZE_ORDER)
+#define THREAD_MASK 		(THREAD_SIZE - 1UL)
+#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
+
+#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define free_thread_info(info) kfree(info)
+
+#endif /* !__ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE		0x10000000
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to
+ *   access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_SIGPENDING		1	/* signal pending */
+#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
+#define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
+#define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling
+						 TIF_NEED_RESCHED */
+#define TIF_MEMDIE		18
+
+#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
+#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+
+#define _TIF_WORK_MASK		(0x0000ffff)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_SCORE_THREAD_INFO_H */
diff --git a/arch/score/include/asm/timex.h b/arch/score/include/asm/timex.h
new file mode 100644
index 0000000..a524ae0
--- /dev/null
+++ b/arch/score/include/asm/timex.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_TIMEX_H
+#define _ASM_SCORE_TIMEX_H
+
+#define CLOCK_TICK_RATE 27000000 /* Timer input freq. */
+
+#include <asm-generic/timex.h>
+
+#endif /* _ASM_SCORE_TIMEX_H */
diff --git a/arch/score/include/asm/tlb.h b/arch/score/include/asm/tlb.h
new file mode 100644
index 0000000..46882ed
--- /dev/null
+++ b/arch/score/include/asm/tlb.h
@@ -0,0 +1,17 @@
+#ifndef _ASM_SCORE_TLB_H
+#define _ASM_SCORE_TLB_H
+
+/*
+ * SCORE doesn't need any special per-pte or per-vma handling, except
+ * we need to flush cache for area to be unmapped.
+ */
+#define tlb_start_vma(tlb, vma)		do {} while (0)
+#define tlb_end_vma(tlb, vma)		do {} while (0)
+#define __tlb_remove_tlb_entry(tlb, ptep, address) do {} while (0)
+#define tlb_flush(tlb)			flush_tlb_mm((tlb)->mm)
+
+extern void score7_FTLB_refill_Handler(void);
+
+#include <asm-generic/tlb.h>
+
+#endif /* _ASM_SCORE_TLB_H */
diff --git a/arch/score/include/asm/tlbflush.h b/arch/score/include/asm/tlbflush.h
new file mode 100644
index 0000000..9cce978
--- /dev/null
+++ b/arch/score/include/asm/tlbflush.h
@@ -0,0 +1,142 @@
+#ifndef _ASM_SCORE_TLBFLUSH_H
+#define _ASM_SCORE_TLBFLUSH_H
+
+#include <linux/mm.h>
+
+/*
+ * TLB flushing:
+ *
+ * - flush_tlb_all() flushes all processes TLB entries
+ * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
+ * - flush_tlb_page(vma, vmaddr) flushes one page
+ * - flush_tlb_range(vma, start, end) flushes a range of pages
+ * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
+ */
+extern void local_flush_tlb_all(void);
+extern void local_flush_tlb_mm(struct mm_struct *mm);
+extern void local_flush_tlb_range(struct vm_area_struct *vma,
+	unsigned long start, unsigned long end);
+extern void local_flush_tlb_kernel_range(unsigned long start,
+	unsigned long end);
+extern void local_flush_tlb_page(struct vm_area_struct *vma,
+	unsigned long page);
+extern void local_flush_tlb_one(unsigned long vaddr);
+
+#define flush_tlb_all()			local_flush_tlb_all()
+#define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
+#define flush_tlb_range(vma, vmaddr, end) \
+	local_flush_tlb_range(vma, vmaddr, end)
+#define flush_tlb_kernel_range(vmaddr, end) \
+	local_flush_tlb_kernel_range(vmaddr, end)
+#define flush_tlb_page(vma, page)	local_flush_tlb_page(vma, page)
+#define flush_tlb_one(vaddr)		local_flush_tlb_one(vaddr)
+
+#ifndef __ASSEMBLY__
+
+static inline unsigned long pevn_get(void)
+{
+	unsigned long val;
+
+	__asm__ __volatile__(
+		"mfcr %0, cr11\n"
+		"nop\nnop\n"
+		: "=r" (val));
+
+	return val;
+}
+
+static inline void pevn_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr11\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (val));
+}
+
+static inline void pectx_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr12\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (val));
+}
+
+static inline unsigned long pectx_get(void)
+{
+	unsigned long val;
+	__asm__ __volatile__(
+		"mfcr %0, cr12\n"
+		"nop\nnop\n"
+	: "=r" (val));
+	return val;
+}
+static inline unsigned long tlblock_get(void)
+{
+	unsigned long val;
+
+	__asm__ __volatile__(
+		"mfcr %0, cr7\n"
+		"nop\nnop\n"
+	: "=r" (val));
+	return val;
+}
+static inline void tlblock_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr7\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (val));
+}
+
+static inline void tlbpt_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr8\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		: : "r" (val));
+}
+
+static inline long tlbpt_get(void)
+{
+	long val;
+
+	__asm__ __volatile__(
+		"mfcr %0, cr8\n"
+		"nop\nnop\n"
+		: "=r" (val));
+
+	return val;
+}
+
+static inline void peaddr_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr9\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		: : "r" (val));
+}
+
+/* TLB operations. */
+static inline void tlb_probe(void)
+{
+	__asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_read(void)
+{
+	__asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_write_indexed(void)
+{
+	__asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_write_random(void)
+{
+	__asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
+}
+
+#endif /* Not __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_TLBFLUSH_H */
diff --git a/arch/score/include/asm/topology.h b/arch/score/include/asm/topology.h
new file mode 100644
index 0000000..425fba3
--- /dev/null
+++ b/arch/score/include/asm/topology.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TOPOLOGY_H
+#define _ASM_SCORE_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_SCORE_TOPOLOGY_H */
diff --git a/arch/score/include/asm/types.h b/arch/score/include/asm/types.h
new file mode 100644
index 0000000..2140032
--- /dev/null
+++ b/arch/score/include/asm/types.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TYPES_H
+#define _ASM_SCORE_TYPES_H
+
+#include <asm-generic/types.h>
+
+#endif /* _ASM_SCORE_TYPES_H */
diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h
new file mode 100644
index 0000000..43ce28a1d
--- /dev/null
+++ b/arch/score/include/asm/uaccess.h
@@ -0,0 +1,27 @@
+#ifndef _ASM_SCORE_UACCESS_H
+#define _ASM_SCORE_UACCESS_H
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+struct pt_regs;
+extern int fixup_exception(struct pt_regs *regs);
+
+#ifndef __ASSEMBLY__
+
+#define __range_ok(addr, size)					\
+	((((unsigned long)(addr) >= 0x80000000)			\
+	|| ((unsigned long)(size) > 0x80000000)			\
+	|| (((unsigned long)(addr) + (unsigned long)(size)) > 0x80000000)))
+
+#define __access_ok(addr, size) \
+	(__range_ok((addr), (size)) == 0)
+
+#include <asm-generic/uaccess.h>
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_UACCESS_H */
diff --git a/arch/score/include/asm/unaligned.h b/arch/score/include/asm/unaligned.h
new file mode 100644
index 0000000..2fc06de
--- /dev/null
+++ b/arch/score/include/asm/unaligned.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_UNALIGNED_H
+#define _ASM_SCORE_UNALIGNED_H
+
+#include <asm-generic/unaligned.h>
+
+#endif /* _ASM_SCORE_UNALIGNED_H */
diff --git a/arch/score/include/asm/unistd.h b/arch/score/include/asm/unistd.h
new file mode 100644
index 0000000..9aa3a15
--- /dev/null
+++ b/arch/score/include/asm/unistd.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_UNISTD_H
+#define _ASM_SCORE_UNISTD_H
+
+#define __ARCH_HAVE_MMU
+
+#include <asm-generic/unistd.h>
+
+#endif /* _ASM_SCORE_UNISTD_H */
diff --git a/arch/score/include/asm/user.h b/arch/score/include/asm/user.h
new file mode 100644
index 0000000..3cf7572
--- /dev/null
+++ b/arch/score/include/asm/user.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_USER_H
+#define _ASM_SCORE_USER_H
+
+#endif /* _ASM_SCORE_USER_H */
diff --git a/arch/score/kernel/Makefile b/arch/score/kernel/Makefile
new file mode 100644
index 0000000..1e5de89
--- /dev/null
+++ b/arch/score/kernel/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the Linux/SCORE kernel.
+#
+
+extra-y	:= head.o vmlinux.lds
+
+obj-y += entry.o init_task.o irq.o process.o ptrace.o \
+	setup.o signal.o sys_score.o time.o traps.o
+
+obj-$(CONFIG_MODULES) += module.o
diff --git a/arch/score/kernel/asm-offsets.c b/arch/score/kernel/asm-offsets.c
new file mode 100644
index 0000000..57788f4
--- /dev/null
+++ b/arch/score/kernel/asm-offsets.c
@@ -0,0 +1,216 @@
+/*
+ * arch/score/kernel/asm-offsets.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/kbuild.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+
+#include <asm-generic/cmpxchg-local.h>
+
+void output_ptreg_defines(void)
+{
+	COMMENT("SCORE pt_regs offsets.");
+	OFFSET(PT_R0, pt_regs, regs[0]);
+	OFFSET(PT_R1, pt_regs, regs[1]);
+	OFFSET(PT_R2, pt_regs, regs[2]);
+	OFFSET(PT_R3, pt_regs, regs[3]);
+	OFFSET(PT_R4, pt_regs, regs[4]);
+	OFFSET(PT_R5, pt_regs, regs[5]);
+	OFFSET(PT_R6, pt_regs, regs[6]);
+	OFFSET(PT_R7, pt_regs, regs[7]);
+	OFFSET(PT_R8, pt_regs, regs[8]);
+	OFFSET(PT_R9, pt_regs, regs[9]);
+	OFFSET(PT_R10, pt_regs, regs[10]);
+	OFFSET(PT_R11, pt_regs, regs[11]);
+	OFFSET(PT_R12, pt_regs, regs[12]);
+	OFFSET(PT_R13, pt_regs, regs[13]);
+	OFFSET(PT_R14, pt_regs, regs[14]);
+	OFFSET(PT_R15, pt_regs, regs[15]);
+	OFFSET(PT_R16, pt_regs, regs[16]);
+	OFFSET(PT_R17, pt_regs, regs[17]);
+	OFFSET(PT_R18, pt_regs, regs[18]);
+	OFFSET(PT_R19, pt_regs, regs[19]);
+	OFFSET(PT_R20, pt_regs, regs[20]);
+	OFFSET(PT_R21, pt_regs, regs[21]);
+	OFFSET(PT_R22, pt_regs, regs[22]);
+	OFFSET(PT_R23, pt_regs, regs[23]);
+	OFFSET(PT_R24, pt_regs, regs[24]);
+	OFFSET(PT_R25, pt_regs, regs[25]);
+	OFFSET(PT_R26, pt_regs, regs[26]);
+	OFFSET(PT_R27, pt_regs, regs[27]);
+	OFFSET(PT_R28, pt_regs, regs[28]);
+	OFFSET(PT_R29, pt_regs, regs[29]);
+	OFFSET(PT_R30, pt_regs, regs[30]);
+	OFFSET(PT_R31, pt_regs, regs[31]);
+
+	OFFSET(PT_ORIG_R4, pt_regs, orig_r4);
+	OFFSET(PT_ORIG_R7, pt_regs, orig_r7);
+	OFFSET(PT_CEL, pt_regs, cel);
+	OFFSET(PT_CEH, pt_regs, ceh);
+	OFFSET(PT_SR0, pt_regs, sr0);
+	OFFSET(PT_SR1, pt_regs, sr1);
+	OFFSET(PT_SR2, pt_regs, sr2);
+	OFFSET(PT_EPC, pt_regs, cp0_epc);
+	OFFSET(PT_EMA, pt_regs, cp0_ema);
+	OFFSET(PT_PSR, pt_regs, cp0_psr);
+	OFFSET(PT_ECR, pt_regs, cp0_ecr);
+	OFFSET(PT_CONDITION, pt_regs, cp0_condition);
+	OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall);
+
+	DEFINE(PT_SIZE, sizeof(struct pt_regs));
+	BLANK();
+}
+
+void output_task_defines(void)
+{
+	COMMENT("SCORE task_struct offsets.");
+	OFFSET(TASK_STATE, task_struct, state);
+	OFFSET(TASK_THREAD_INFO, task_struct, stack);
+	OFFSET(TASK_FLAGS, task_struct, flags);
+	OFFSET(TASK_MM, task_struct, mm);
+	OFFSET(TASK_PID, task_struct, pid);
+	DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
+	BLANK();
+}
+
+void output_thread_info_defines(void)
+{
+	COMMENT("SCORE thread_info offsets.");
+	OFFSET(TI_TASK, thread_info, task);
+	OFFSET(TI_EXEC_DOMAIN, thread_info, exec_domain);
+	OFFSET(TI_FLAGS, thread_info, flags);
+	OFFSET(TI_TP_VALUE, thread_info, tp_value);
+	OFFSET(TI_CPU, thread_info, cpu);
+	OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
+	OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
+	OFFSET(TI_RESTART_BLOCK, thread_info, restart_block);
+	OFFSET(TI_REGS, thread_info, regs);
+	DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
+	DEFINE(KERNEL_STACK_MASK, THREAD_MASK);
+	BLANK();
+}
+
+void output_thread_defines(void)
+{
+	COMMENT("SCORE specific thread_struct offsets.");
+	OFFSET(THREAD_REG0, task_struct, thread.reg0);
+	OFFSET(THREAD_REG2, task_struct, thread.reg2);
+	OFFSET(THREAD_REG3, task_struct, thread.reg3);
+	OFFSET(THREAD_REG12, task_struct, thread.reg12);
+	OFFSET(THREAD_REG13, task_struct, thread.reg13);
+	OFFSET(THREAD_REG14, task_struct, thread.reg14);
+	OFFSET(THREAD_REG15, task_struct, thread.reg15);
+	OFFSET(THREAD_REG16, task_struct, thread.reg16);
+	OFFSET(THREAD_REG17, task_struct, thread.reg17);
+	OFFSET(THREAD_REG18, task_struct, thread.reg18);
+	OFFSET(THREAD_REG19, task_struct, thread.reg19);
+	OFFSET(THREAD_REG20, task_struct, thread.reg20);
+	OFFSET(THREAD_REG21, task_struct, thread.reg21);
+	OFFSET(THREAD_REG29, task_struct, thread.reg29);
+
+	OFFSET(THREAD_PSR, task_struct, thread.cp0_psr);
+	OFFSET(THREAD_EMA, task_struct, thread.cp0_ema);
+	OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr);
+	OFFSET(THREAD_ECODE, task_struct, thread.error_code);
+	OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no);
+	BLANK();
+}
+
+void output_mm_defines(void)
+{
+	COMMENT("Size of struct page");
+	DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
+	BLANK();
+	COMMENT("Linux mm_struct offsets.");
+	OFFSET(MM_USERS, mm_struct, mm_users);
+	OFFSET(MM_PGD, mm_struct, pgd);
+	OFFSET(MM_CONTEXT, mm_struct, context);
+	BLANK();
+	DEFINE(_PAGE_SIZE, PAGE_SIZE);
+	DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
+	BLANK();
+	DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
+	DEFINE(_PTE_T_SIZE, sizeof(pte_t));
+	BLANK();
+	DEFINE(_PGD_ORDER, PGD_ORDER);
+	DEFINE(_PTE_ORDER, PTE_ORDER);
+	BLANK();
+	DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
+	BLANK();
+	DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
+	DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
+	BLANK();
+}
+
+void output_sc_defines(void)
+{
+	COMMENT("Linux sigcontext offsets.");
+	OFFSET(SC_REGS, sigcontext, sc_regs);
+	OFFSET(SC_MDCEH, sigcontext, sc_mdceh);
+	OFFSET(SC_MDCEL, sigcontext, sc_mdcel);
+	OFFSET(SC_PC, sigcontext, sc_pc);
+	OFFSET(SC_PSR, sigcontext, sc_psr);
+	OFFSET(SC_ECR, sigcontext, sc_ecr);
+	OFFSET(SC_EMA, sigcontext, sc_ema);
+	BLANK();
+}
+
+void output_signal_defined(void)
+{
+	COMMENT("Linux signal numbers.");
+	DEFINE(_SIGHUP, SIGHUP);
+	DEFINE(_SIGINT, SIGINT);
+	DEFINE(_SIGQUIT, SIGQUIT);
+	DEFINE(_SIGILL, SIGILL);
+	DEFINE(_SIGTRAP, SIGTRAP);
+	DEFINE(_SIGIOT, SIGIOT);
+	DEFINE(_SIGABRT, SIGABRT);
+	DEFINE(_SIGFPE, SIGFPE);
+	DEFINE(_SIGKILL, SIGKILL);
+	DEFINE(_SIGBUS, SIGBUS);
+	DEFINE(_SIGSEGV, SIGSEGV);
+	DEFINE(_SIGSYS, SIGSYS);
+	DEFINE(_SIGPIPE, SIGPIPE);
+	DEFINE(_SIGALRM, SIGALRM);
+	DEFINE(_SIGTERM, SIGTERM);
+	DEFINE(_SIGUSR1, SIGUSR1);
+	DEFINE(_SIGUSR2, SIGUSR2);
+	DEFINE(_SIGCHLD, SIGCHLD);
+	DEFINE(_SIGPWR, SIGPWR);
+	DEFINE(_SIGWINCH, SIGWINCH);
+	DEFINE(_SIGURG, SIGURG);
+	DEFINE(_SIGIO, SIGIO);
+	DEFINE(_SIGSTOP, SIGSTOP);
+	DEFINE(_SIGTSTP, SIGTSTP);
+	DEFINE(_SIGCONT, SIGCONT);
+	DEFINE(_SIGTTIN, SIGTTIN);
+	DEFINE(_SIGTTOU, SIGTTOU);
+	DEFINE(_SIGVTALRM, SIGVTALRM);
+	DEFINE(_SIGPROF, SIGPROF);
+	DEFINE(_SIGXCPU, SIGXCPU);
+	DEFINE(_SIGXFSZ, SIGXFSZ);
+	BLANK();
+}
diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S
new file mode 100644
index 0000000..6c6b7ea
--- /dev/null
+++ b/arch/score/kernel/entry.S
@@ -0,0 +1,542 @@
+/*
+ * arch/score/kernel/entry.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+
+#include <asm/asmmacro.h>
+#include <asm/thread_info.h>
+#include <asm/unistd.h>
+
+/*
+ * disable interrupts.
+ */
+.macro	disable_irq
+	mfcr	r8, cr0
+	srli	r8, r8, 1
+	slli	r8, r8, 1
+	mtcr	r8, cr0
+	nop
+	nop
+	nop
+	nop
+	nop
+.endm
+
+/*
+ * enable interrupts.
+ */
+.macro	enable_irq
+	mfcr	r8, cr0
+	ori	r8, 1
+	mtcr	r8, cr0
+	nop
+	nop
+	nop
+	nop
+	nop
+.endm
+
+__INIT
+ENTRY(debug_exception_vector)
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+
+ENTRY(general_exception_vector)			# should move to addr 0x200
+	j	general_exception
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+
+ENTRY(interrupt_exception_vector)		# should move to addr 0x210
+	j	interrupt_exception
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+	nop!
+
+	.section ".text", "ax"
+	.align	2;
+general_exception:
+	mfcr	r31, cr2
+	nop
+	la	r30, exception_handlers
+	andi	r31, 0x1f			# get ecr.exc_code
+	slli	r31, r31, 2
+	add	r30, r30, r31
+	lw	r30, [r30]
+	br	r30
+
+interrupt_exception:
+	SAVE_ALL
+	mfcr	r4, cr2
+	nop
+	lw	r16, [r28, TI_REGS]
+	sw	r0, [r28, TI_REGS]
+	la	r3, ret_from_irq
+	srli	r4, r4, 18			# get ecr.ip[7:2], interrupt No.
+	mv	r5, r0
+	j	do_IRQ
+
+ENTRY(handle_nmi)				# NMI #1
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, nmi_exception_handler
+	brl	r8
+	j	restore_all
+
+ENTRY(handle_adelinsn)				# AdEL-instruction #2
+	SAVE_ALL
+	mfcr	r8, cr6
+	nop
+	nop
+	sw	r8, [r0, PT_EMA]
+	mv	r4, r0
+	la	r8, do_adelinsn
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_ibe)				# BusEL-instruction #5
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_be
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_pel)				# P-EL #6
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_pel
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_ccu)				# CCU #8
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_ccu
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_ri)				# RI #9
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_ri
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_tr)				# Trap #10
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_tr
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_adedata)				# AdES-instruction #12
+	SAVE_ALL
+	mfcr	r8, cr6
+	nop
+	nop
+	sw	r8, [r0, PT_EMA]
+	mv	r4, r0
+	la	r8, do_adedata
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_cee)				# CeE #16
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_cee
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_cpe)				# CpE #17
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_cpe
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_dbe)				# BusEL-data #18
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_be
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+ENTRY(handle_reserved)				# others
+	SAVE_ALL
+	mv	r4, r0
+	la	r8, do_reserved
+	brl	r8
+	mv	r4, r0
+	j	ret_from_exception
+	nop
+
+#ifndef CONFIG_PREEMPT
+#define resume_kernel	restore_all
+#else
+#define __ret_from_irq	ret_from_exception
+#endif
+
+	.align	2
+#ifndef CONFIG_PREEMPT
+ENTRY(ret_from_exception)
+	disable_irq			# preempt stop
+	nop
+	j	__ret_from_irq
+	nop
+#endif
+
+ENTRY(ret_from_irq)
+	sw	r16, [r28, TI_REGS]
+
+ENTRY(__ret_from_irq)
+	lw	r8, [r0, PT_PSR]	# returning to kernel mode?
+	andri.c	r8, r8, KU_USER
+	beq	resume_kernel
+
+resume_userspace:
+	disable_irq
+	lw	r6, [r28, TI_FLAGS]	# current->work
+	li	r8, _TIF_WORK_MASK
+	and.c	r8, r8, r6		# ignoring syscall_trace
+	bne	work_pending
+	nop
+	j	restore_all
+	nop
+
+#ifdef CONFIG_PREEMPT
+resume_kernel:
+	disable_irq
+	lw	r8, [r28, TI_PRE_COUNT]
+	cmpz.c	r8
+	bne	r8, restore_all
+need_resched:
+	lw	r8, [r28, TI_FLAGS]
+	andri.c	r9, r8, _TIF_NEED_RESCHED
+	beq	restore_all
+	lw	r8, [r28, PT_PSR]		# Interrupts off?
+	andri.c	r8, r8, 1
+	beq	restore_all
+	bl	preempt_schedule_irq
+	nop
+	j	need_resched
+	nop
+#endif
+
+ENTRY(ret_from_fork)
+	bl	schedule_tail			# r4=struct task_struct *prev
+
+ENTRY(syscall_exit)
+	nop
+	disable_irq
+	lw	r6, [r28, TI_FLAGS]		# current->work
+	li	r8, _TIF_WORK_MASK
+	and.c	r8, r6, r8
+	bne	syscall_exit_work
+
+ENTRY(restore_all)					# restore full frame
+	RESTORE_ALL_AND_RET
+
+work_pending:
+	andri.c	r8, r6, _TIF_NEED_RESCHED # r6 is preloaded with TI_FLAGS
+	beq	work_notifysig
+work_resched:
+	bl	schedule
+	nop
+	disable_irq
+	lw	r6, [r28, TI_FLAGS]
+	li	r8, _TIF_WORK_MASK
+	and.c	r8, r6, r8	# is there any work to be done
+				# other than syscall tracing?
+	beq	restore_all
+	andri.c	r8, r6, _TIF_NEED_RESCHED
+	bne	work_resched
+
+work_notifysig:
+	mv	r4, r0
+	li	r5, 0
+	bl	do_notify_resume	# r6 already loaded
+	nop
+	j	resume_userspace
+	nop
+
+ENTRY(syscall_exit_work)
+	li	r8, _TIF_SYSCALL_TRACE
+	and.c	r8, r8, r6		# r6 is preloaded with TI_FLAGS
+	beq	work_pending		# trace bit set?
+	nop
+	enable_irq
+	mv	r4, r0
+	li	r5, 1
+	bl	do_syscall_trace
+	nop
+	b	resume_userspace
+	nop
+
+.macro	save_context	reg
+	sw	r12, [\reg, THREAD_REG12];
+	sw	r13, [\reg, THREAD_REG13];
+	sw	r14, [\reg, THREAD_REG14];
+	sw	r15, [\reg, THREAD_REG15];
+	sw	r16, [\reg, THREAD_REG16];
+	sw	r17, [\reg, THREAD_REG17];
+	sw	r18, [\reg, THREAD_REG18];
+	sw	r19, [\reg, THREAD_REG19];
+	sw	r20, [\reg, THREAD_REG20];
+	sw	r21, [\reg, THREAD_REG21];
+	sw	r29, [\reg, THREAD_REG29];
+	sw	r2, [\reg, THREAD_REG2];
+	sw	r0, [\reg, THREAD_REG0]
+.endm
+
+.macro	restore_context	reg
+	lw	r12, [\reg, THREAD_REG12];
+	lw	r13, [\reg, THREAD_REG13];
+	lw	r14, [\reg, THREAD_REG14];
+	lw	r15, [\reg, THREAD_REG15];
+	lw	r16, [\reg, THREAD_REG16];
+	lw	r17, [\reg, THREAD_REG17];
+	lw	r18, [\reg, THREAD_REG18];
+	lw	r19, [\reg, THREAD_REG19];
+	lw	r20, [\reg, THREAD_REG20];
+	lw	r21, [\reg, THREAD_REG21];
+	lw	r29, [\reg, THREAD_REG29];
+	lw	r0, [\reg, THREAD_REG0];
+	lw	r2, [\reg, THREAD_REG2];
+	lw	r3, [\reg, THREAD_REG3]
+.endm
+
+/*
+ * task_struct *resume(task_struct *prev, task_struct *next,
+ *			struct thread_info *next_ti)
+ */
+ENTRY(resume)
+	mfcr	r9, cr0
+	nop
+	nop
+	sw	r9, [r4, THREAD_PSR]
+	save_context	r4
+	sw	r3, [r4, THREAD_REG3]
+
+	mv	r28, r6
+	restore_context	r5
+	mv	r8, r6
+	addi	r8, KERNEL_STACK_SIZE
+	subi	r8, 32
+	la 	r9, kernelsp;
+	sw 	r8, [r9];
+
+	mfcr	r9, cr0
+	ldis	r7, 0x00ff
+	nop
+	and	r9, r9, r7
+	lw	r6, [r5, THREAD_PSR]
+	not	r7, r7
+	and	r6, r6, r7
+	or	r6, r6, r9
+	mtcr	r6, cr0
+	nop; nop; nop; nop; nop
+	br	r3
+
+ENTRY(handle_sys)
+	SAVE_ALL
+	enable_irq
+
+	sw	r4, [r0, PT_ORIG_R4]	#for restart syscall
+	sw	r7, [r0, PT_ORIG_R7]	#for restart syscall
+	sw	r27, [r0, PT_IS_SYSCALL] # it from syscall
+
+	lw	r9, [r0, PT_EPC]	# skip syscall on return
+	addi	r9, 4
+	sw	r9, [r0, PT_EPC]
+
+	cmpi.c	r27, __NR_syscalls 	# check syscall number
+	bgtu	illegal_syscall
+
+	slli	r8, r27, 3		# get syscall routine
+	la	r11, sys_call_table
+	add	r11, r11, r8
+	lw	r10, [r11]		# get syscall entry
+	lw	r11, [r11, 4]		# get number of args
+
+	cmpz.c	r10
+	beq	illegal_syscall
+
+	cmpi.c	r11, 4			# more than 4 arguments?
+	bgtu	stackargs
+
+stack_done:
+	lw	r8, [r28, TI_FLAGS]
+	li	r9, _TIF_SYSCALL_TRACE
+	and.c	r8, r8, r9
+	bne	syscall_trace_entry
+
+	brl	r10			# Do The Real system call
+
+	cmpi.c	r4, 0
+	blt	1f
+	ldi	r8, 0
+	sw	r8, [r0, PT_R7]
+	b 2f
+1:
+	cmpi.c	r4, -EMAXERRNO-1	# -EMAXERRNO - 1=-1134
+	ble	2f
+	ldi	r8, 0x1;
+	sw	r8, [r0, PT_R7]
+	neg	r4, r4
+2:
+	sw	r4, [r0, PT_R4]		# save result
+
+syscall_return:
+	disable_irq
+	lw	r6, [r28, TI_FLAGS]	# current->work
+	li	r8, _TIF_WORK_MASK
+	and.c	r8, r6, r8
+	bne	syscall_return_work
+	j	restore_all
+
+syscall_return_work:
+	j	syscall_exit_work
+
+syscall_trace_entry:
+	mv	r16, r10
+	mv	r4, r0
+	li	r5, 0
+	bl	do_syscall_trace
+
+	mv	r8, r16
+	lw	r4, [r0, PT_R4]		# Restore argument registers
+	lw	r5, [r0, PT_R5]
+	lw	r6, [r0, PT_R6]
+	lw	r7, [r0, PT_R7]
+	brl	r8
+
+	li	r8, -EMAXERRNO - 1	# error?
+	sw	r8, [r0, PT_R7]		# set error flag
+
+	neg	r4, r4			# error
+	sw	r4, [r0, PT_R0]		# set flag for syscall
+					# restarting
+1:	sw	r4, [r0, PT_R2]		# result
+	j	syscall_exit
+
+stackargs:
+	lw	r8, [r0, PT_R0]
+	andri.c	r9, r8, 3		# test whether user sp is align a word
+	bne	bad_stack
+	subi	r11, 5
+	slli	r9, r11, 2
+	add.c	r9, r9, r8
+
+	bmi	bad_stack
+	la	r9, 3f			# calculate branch address
+	slli	r11, r11, 3
+	sub	r9, r9, r11
+	br	r9
+
+2:	lw	r9, [r8, 20]		# argument 6 from usp
+	sw	r9, [r0, 20]
+
+3:	lw	r9, [r8, 16]		# argument 5 from usp
+	sw	r9, [r0, 16]
+	j	stack_done
+
+	.section __ex_table,"a"
+	.word	2b, bad_stack
+	.word	3b, bad_stack
+	.previous
+
+	/*
+	 * The stackpointer for a call with more than 4 arguments is bad.
+	 * We probably should handle this case a bit more drastic.
+	 */
+bad_stack:
+	neg	r27, r27		# error
+	sw	r27, [r0, PT_ORIG_R4]
+	sw	r27, [r0, PT_R4]
+	ldi	r8, 1			# set error flag
+	sw	r8, [r0, PT_R7]
+	j	syscall_return
+
+illegal_syscall:
+	ldi	r4, -ENOSYS		# error
+	sw	r4, [r0, PT_ORIG_R4]
+	sw	r4, [r0, PT_R4]
+	ldi	r9, 1			# set error flag
+	sw	r9, [r0, PT_R7]
+	j	syscall_return
+
+ENTRY(sys_execve)
+	mv	r4, r0
+	la	r8, score_execve
+	br	r8
+
+ENTRY(sys_clone)
+	mv	r4, r0
+	la	r8, score_clone
+	br	r8
+
+ENTRY(sys_rt_sigreturn)
+	mv	r4, r0
+	la	r8, score_rt_sigreturn
+	br	r8
+
+ENTRY(sys_sigaltstack)
+	mv	r4, r0
+	la	r8, score_sigaltstack
+	br	r8
diff --git a/arch/score/kernel/head.S b/arch/score/kernel/head.S
new file mode 100644
index 0000000..22a7e3c
--- /dev/null
+++ b/arch/score/kernel/head.S
@@ -0,0 +1,70 @@
+/*
+ * arch/score/kernel/head.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/init.h>
+#include <linux/linkage.h>
+
+#include <asm/asm-offsets.h>
+
+	.extern start_kernel
+	.global init_thread_union
+	.global	kernelsp
+
+__INIT
+ENTRY(_stext)
+	la	r30, __bss_start	/* initialize BSS segment. */
+	la	r31, _end
+	xor	r8, r8, r8
+
+1:	cmp.c	r31, r30
+	beq	2f
+
+	sw	r8, [r30]		/* clean memory. */
+	addi	r30, 4
+	b	1b
+
+2:	la	r28, init_thread_union	/* set kernel stack. */
+	mv	r0, r28
+	addi	r0, KERNEL_STACK_SIZE - 32
+	la	r30, kernelsp
+	sw	r0, [r30]
+	subi	r0, 4*4
+	xor	r30, r30, r30
+	ori	r30, 0x02		/* enable MMU. */
+	mtcr	r30, cr4
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	/* there is no parameter */
+	xor	r4, r4, r4
+	xor	r5, r5, r5
+	xor	r6, r6, r6
+	xor	r7, r7, r7
+	la	r30, start_kernel	/* jump to init_arch */
+	br	r30
diff --git a/arch/score/kernel/init_task.c b/arch/score/kernel/init_task.c
new file mode 100644
index 0000000..9eecde0
--- /dev/null
+++ b/arch/score/kernel/init_task.c
@@ -0,0 +1,49 @@
+/*
+ * arch/score/kernel/init_task.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init_task.h>
+#include <linux/mqueue.h>
+
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+struct mm_struct init_mm = INIT_MM(init_mm);
+EXPORT_SYMBOL(init_mm);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is THREAD_SIZE aligned due to the
+ * way process stacks are handled. This is done by having a special
+ * "init_task" linker map entry..
+ */
+union thread_union init_thread_union
+	__attribute__((__section__(".data.init_task"))) =
+		{ INIT_THREAD_INFO(init_task) };
+
+/*
+ * Initial task structure.
+ *
+ * All other task structs will be allocated on slabs in fork.c
+ */
+struct task_struct init_task = INIT_TASK(init_task);
+EXPORT_SYMBOL(init_task);
diff --git a/arch/score/kernel/irq.c b/arch/score/kernel/irq.c
new file mode 100644
index 0000000..55474e8
--- /dev/null
+++ b/arch/score/kernel/irq.c
@@ -0,0 +1,135 @@
+/*
+ * arch/score/kernel/irq.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/seq_file.h>
+
+#include <asm/io.h>
+
+/*
+ * handles all normal device IRQs
+ */
+asmlinkage void do_IRQ(int irq)
+{
+	irq_enter();
+	generic_handle_irq(irq);
+	irq_exit();
+}
+
+static void score_mask(unsigned int irq_nr)
+{
+	unsigned int irq_source = 63 - irq_nr;
+
+	if (irq_source < 32)
+		__raw_writel((__raw_readl((void *)P_INT_MASKL) | \
+			(1 << irq_source)), (void *)P_INT_MASKL);
+	else
+		__raw_writel((__raw_readl((void *)P_INT_MASKH) | \
+			(1 << (irq_source - 32))), (void *)P_INT_MASKH);
+}
+
+static void score_unmask(unsigned int irq_nr)
+{
+	unsigned int irq_source = 63 - irq_nr;
+
+	if (irq_source < 32)
+		__raw_writel((__raw_readl((void *)P_INT_MASKL) & \
+			~(1 << irq_source)), (void *)P_INT_MASKL);
+	else
+		__raw_writel((__raw_readl((void *)P_INT_MASKH) & \
+			~(1 << (irq_source - 32))), (void *)P_INT_MASKH);
+}
+
+struct irq_chip score_irq_chip = {
+	.name		= "Score7-level",
+	.mask		= score_mask,
+	.mask_ack	= score_mask,
+	.unmask		= score_unmask,
+};
+
+/*
+ * initialise the interrupt system
+ */
+void __init init_IRQ(void)
+{
+	int index;
+	unsigned long target_addr;
+
+	for (index = 0; index < NR_IRQS; ++index)
+		set_irq_chip_and_handler(index, &score_irq_chip,
+					 handle_level_irq);
+
+	for (target_addr = IRQ_VECTOR_BASE_ADDR;
+		target_addr <= IRQ_VECTOR_END_ADDR;
+		target_addr += IRQ_VECTOR_SIZE)
+		memcpy((void *)target_addr, \
+			interrupt_exception_vector, IRQ_VECTOR_SIZE);
+
+	__raw_writel(0xffffffff, (void *)P_INT_MASKL);
+	__raw_writel(0xffffffff, (void *)P_INT_MASKH);
+
+	__asm__ __volatile__(
+		"mtcr	%0, cr3\n\t"
+		: : "r" (EXCEPTION_VECTOR_BASE_ADDR | \
+			VECTOR_ADDRESS_OFFSET_MODE16));
+}
+
+/*
+ * Generic, controller-independent functions:
+ */
+int show_interrupts(struct seq_file *p, void *v)
+{
+	int i = *(loff_t *)v, cpu;
+	struct irqaction *action;
+	unsigned long flags;
+
+	if (i == 0) {
+		seq_puts(p, "           ");
+		for_each_online_cpu(cpu)
+			seq_printf(p, "CPU%d       ", cpu);
+		seq_putc(p, '\n');
+	}
+
+	if (i < NR_IRQS) {
+		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		action = irq_desc[i].action;
+		if (!action)
+			goto unlock;
+
+		seq_printf(p, "%3d: ", i);
+		seq_printf(p, "%10u ", kstat_irqs(i));
+		seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-");
+		seq_printf(p, "  %s", action->name);
+		for (action = action->next; action; action = action->next)
+			seq_printf(p, ", %s", action->name);
+
+		seq_putc(p, '\n');
+unlock:
+		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+	}
+
+	return 0;
+}
diff --git a/arch/score/kernel/module.c b/arch/score/kernel/module.c
new file mode 100644
index 0000000..4ffce7f
--- /dev/null
+++ b/arch/score/kernel/module.c
@@ -0,0 +1,164 @@
+/*
+ * arch/score/kernel/module.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+
+void *module_alloc(unsigned long size)
+{
+	return size ? vmalloc(size) : NULL;
+}
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+	vfree(module_region);
+}
+
+int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
+			char *secstrings, struct module *mod)
+{
+	return 0;
+}
+
+int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
+		unsigned int symindex, unsigned int relindex,
+		struct module *me)
+{
+	Elf32_Shdr *symsec = sechdrs + symindex;
+	Elf32_Shdr *relsec = sechdrs + relindex;
+	Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
+	Elf32_Rel *rel = (void *)relsec->sh_addr;
+	unsigned int i;
+
+	for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
+		unsigned long loc;
+		Elf32_Sym *sym;
+		s32 offset;
+
+		offset = ELF32_R_SYM(rel->r_info);
+		if ((offset < 0) ||
+		    (offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
+			printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
+				me->name, relindex, i);
+				return -ENOEXEC;
+		}
+
+		sym = ((Elf32_Sym *)symsec->sh_addr) + offset;
+
+		if ((rel->r_offset < 0) ||
+		    (rel->r_offset > dstsec->sh_size - sizeof(u32))) {
+			printk(KERN_ERR "%s: out of bounds relocation, "
+				"section %d reloc %d offset %d size %d\n",
+				me->name, relindex, i, rel->r_offset,
+				dstsec->sh_size);
+			return -ENOEXEC;
+		}
+
+		loc = dstsec->sh_addr + rel->r_offset;
+		switch (ELF32_R_TYPE(rel->r_info)) {
+		case R_SCORE_NONE:
+			break;
+		case R_SCORE_ABS32:
+			*(unsigned long *)loc += sym->st_value;
+			break;
+		case R_SCORE_HI16:
+			break;
+		case R_SCORE_LO16: {
+			unsigned long hi16_offset, offset;
+			unsigned long uvalue;
+			unsigned long temp, temp_hi;
+			temp_hi = *((unsigned long *)loc - 1);
+			temp = *(unsigned long *)loc;
+
+			hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) |
+					((temp_hi) & 0x7fff)) >> 1;
+			offset = ((temp >> 16 & 0x03) << 15) |
+					((temp & 0x7fff) >> 1);
+			offset = (hi16_offset << 16) | (offset & 0xffff);
+			uvalue = sym->st_value + offset;
+			hi16_offset = (uvalue >> 16) << 1;
+
+			temp_hi = ((temp_hi) & (~(0x37fff))) |
+					(hi16_offset & 0x7fff) |
+					((hi16_offset << 1) & 0x30000);
+			*((unsigned long *)loc - 1) = temp_hi;
+
+			offset = (uvalue & 0xffff) << 1;
+			temp = (temp & (~(0x37fff))) | (offset & 0x7fff) |
+				((offset << 1) & 0x30000);
+			*(unsigned long *)loc = temp;
+			break;
+		}
+		case R_SCORE_24: {
+			unsigned long hi16_offset, offset;
+			unsigned long uvalue;
+			unsigned long temp;
+
+			temp = *(unsigned long *)loc;
+			offset = (temp & 0x03FF7FFE);
+			hi16_offset = (offset & 0xFFFF0000);
+			offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2;
+
+			uvalue = (sym->st_value + offset) >> 1;
+			uvalue = uvalue & 0x00ffffff;
+
+			temp = (temp & 0xfc008001) |
+				((uvalue << 2) & 0x3ff0000) |
+				((uvalue & 0x3fff) << 1);
+			*(unsigned long *)loc = temp;
+			break;
+		}
+		default:
+			printk(KERN_ERR "%s: unknown relocation: %u\n",
+				me->name, ELF32_R_TYPE(rel->r_info));
+			return -ENOEXEC;
+		}
+	}
+
+	return 0;
+}
+
+int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
+		unsigned int symindex, unsigned int relsec,
+		struct module *me)
+{
+	return 0;
+}
+
+/* Given an address, look for it in the module exception tables. */
+const struct exception_table_entry *search_module_dbetables(unsigned long addr)
+{
+	return 0;
+}
+
+/* Put in dbe list if necessary. */
+int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
+		struct module *me)
+{
+	return 0;
+}
+
+void module_arch_cleanup(struct module *mod) {}
diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c
new file mode 100644
index 0000000..aaa3085
--- /dev/null
+++ b/arch/score/kernel/process.c
@@ -0,0 +1,165 @@
+/*
+ * arch/score/kernel/process.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+/* If or when software machine-restart is implemented, add code here. */
+void machine_restart(char *command) {}
+
+/* If or when software machine-halt is implemented, add code here. */
+void machine_halt(void) {}
+
+/* If or when software machine-power-off is implemented, add code here. */
+void machine_power_off(void) {}
+
+/*
+ * The idle thread. There's no useful work to be
+ * done, so just try to conserve power and have a
+ * low exit latency (ie sit in a loop waiting for
+ * somebody to say that they'd like to reschedule)
+ */
+void __noreturn cpu_idle(void)
+{
+	/* endless idle loop with no priority at all */
+	while (1) {
+		while (!need_resched())
+			barrier();
+
+		preempt_enable_no_resched();
+		schedule();
+		preempt_disable();
+	}
+}
+
+asmlinkage void ret_from_fork(void);
+
+void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
+{
+	unsigned long status;
+
+	/* New thread loses kernel privileges. */
+	status = regs->cp0_psr & ~(KU_MASK);
+	status |= KU_USER;
+	regs->cp0_psr = status;
+	regs->cp0_epc = pc;
+	regs->regs[0] = sp;
+}
+
+void exit_thread(void) {}
+
+/*
+ * When a process does an "exec", machine state like FPU and debug
+ * registers need to be reset.  This is a hook function for that.
+ * Currently we don't have any such state to reset, so this is empty.
+ */
+void flush_thread(void) {}
+
+/*
+ * set up the kernel stack and exception frames for a new process
+ */
+int copy_thread(unsigned long clone_flags, unsigned long usp,
+		unsigned long unused,
+		struct task_struct *p, struct pt_regs *regs)
+{
+	struct thread_info *ti = task_thread_info(p);
+	struct pt_regs *childregs = task_pt_regs(p);
+
+	p->set_child_tid = NULL;
+	p->clear_child_tid = NULL;
+
+	*childregs = *regs;
+	childregs->regs[7] = 0;		/* Clear error flag */
+	childregs->regs[4] = 0;		/* Child gets zero as return value */
+	regs->regs[4] = p->pid;
+
+	if (childregs->cp0_psr & 0x8) {	/* test kernel fork or user fork */
+		childregs->regs[0] = usp;		/* user fork */
+	} else {
+		childregs->regs[28] = (unsigned long) ti; /* kernel fork */
+		childregs->regs[0] = (unsigned long) childregs;
+	}
+
+	p->thread.reg0 = (unsigned long) childregs;
+	p->thread.reg3 = (unsigned long) ret_from_fork;
+	p->thread.cp0_psr = 0;
+
+	return 0;
+}
+
+/* Fill in the fpu structure for a core dump. */
+int dump_fpu(struct pt_regs *regs, elf_fpregset_t *r)
+{
+	return 1;
+}
+
+static void __noreturn
+kernel_thread_helper(void *unused0, int (*fn)(void *),
+		 void *arg, void *unused1)
+{
+	do_exit(fn(arg));
+}
+
+/*
+ * Create a kernel thread.
+ */
+long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
+{
+	struct pt_regs regs;
+
+	memset(&regs, 0, sizeof(regs));
+
+	regs.regs[6] = (unsigned long) arg;
+	regs.regs[5] = (unsigned long) fn;
+	regs.cp0_epc = (unsigned long) kernel_thread_helper;
+	regs.cp0_psr = (regs.cp0_psr & ~(0x1|0x4|0x8)) | \
+			((regs.cp0_psr & 0x3) << 2);
+
+	return do_fork(flags | CLONE_VM | CLONE_UNTRACED, \
+			0, &regs, 0, NULL, NULL);
+}
+
+unsigned long thread_saved_pc(struct task_struct *tsk)
+{
+	return task_pt_regs(tsk)->cp0_epc;
+}
+
+unsigned long get_wchan(struct task_struct *task)
+{
+	if (!task || task == current || task->state == TASK_RUNNING)
+		return 0;
+
+	if (!task_stack_page(task))
+		return 0;
+
+	return task_pt_regs(task)->cp0_epc;
+}
+
+unsigned long arch_align_stack(unsigned long sp)
+{
+	return sp;
+}
diff --git a/arch/score/kernel/ptrace.c b/arch/score/kernel/ptrace.c
new file mode 100644
index 0000000..8fe7209
--- /dev/null
+++ b/arch/score/kernel/ptrace.c
@@ -0,0 +1,465 @@
+/*
+ * arch/score/kernel/ptrace.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/ptrace.h>
+
+#include <asm/uaccess.h>
+
+static int is_16bitinsn(unsigned long insn)
+{
+	if ((insn & INSN32_MASK) == INSN32_MASK)
+		return 0;
+	else
+		return 1;
+}
+
+int
+read_tsk_long(struct task_struct *child,
+		unsigned long addr, unsigned long *res)
+{
+	int copied;
+
+	copied = access_process_vm(child, addr, res, sizeof(*res), 0);
+
+	return copied != sizeof(*res) ? -EIO : 0;
+}
+
+int
+read_tsk_short(struct task_struct *child,
+		unsigned long addr, unsigned short *res)
+{
+	int copied;
+
+	copied = access_process_vm(child, addr, res, sizeof(*res), 0);
+
+	return copied != sizeof(*res) ? -EIO : 0;
+}
+
+static int
+write_tsk_short(struct task_struct *child,
+		unsigned long addr, unsigned short val)
+{
+	int copied;
+
+	copied = access_process_vm(child, addr, &val, sizeof(val), 1);
+
+	return copied != sizeof(val) ? -EIO : 0;
+}
+
+static int
+write_tsk_long(struct task_struct *child,
+		unsigned long addr, unsigned long val)
+{
+	int copied;
+
+	copied = access_process_vm(child, addr, &val, sizeof(val), 1);
+
+	return copied != sizeof(val) ? -EIO : 0;
+}
+
+void set_single_step(struct task_struct *child)
+{
+	/* far_epc is the target of branch */
+	unsigned int epc, far_epc = 0;
+	unsigned long epc_insn, far_epc_insn;
+	int ninsn_type;			/* next insn type 0=16b, 1=32b */
+	unsigned int tmp, tmp2;
+	struct pt_regs *regs = task_pt_regs(child);
+	child->thread.single_step = 1;
+	child->thread.ss_nextcnt = 1;
+	epc = regs->cp0_epc;
+
+	read_tsk_long(child, epc, &epc_insn);
+
+	if (is_16bitinsn(epc_insn)) {
+		if ((epc_insn & J16M) == J16) {
+			tmp = epc_insn & 0xFFE;
+			epc = (epc & 0xFFFFF000) | tmp;
+		} else if ((epc_insn & B16M) == B16) {
+			child->thread.ss_nextcnt = 2;
+			tmp = (epc_insn & 0xFF) << 1;
+			tmp = tmp << 23;
+			tmp = (unsigned int)((int) tmp >> 23);
+			far_epc = epc + tmp;
+			epc += 2;
+		} else if ((epc_insn & BR16M) == BR16) {
+			child->thread.ss_nextcnt = 2;
+			tmp = (epc_insn >> 4) & 0xF;
+			far_epc = regs->regs[tmp];
+			epc += 2;
+		} else
+			epc += 2;
+	} else {
+		if ((epc_insn & J32M) == J32) {
+			tmp = epc_insn & 0x03FFFFFE;
+			tmp2 = tmp & 0x7FFF;
+			tmp = (((tmp >> 16) & 0x3FF) << 15) | tmp2;
+			epc = (epc & 0xFFC00000) | tmp;
+		} else if ((epc_insn & B32M) == B32) {
+			child->thread.ss_nextcnt = 2;
+			tmp = epc_insn & 0x03FFFFFE;	/* discard LK bit */
+			tmp2 = tmp & 0x3FF;
+			tmp = (((tmp >> 16) & 0x3FF) << 10) | tmp2; /* 20bit */
+			tmp = tmp << 12;
+			tmp = (unsigned int)((int) tmp >> 12);
+			far_epc = epc + tmp;
+			epc += 4;
+		} else if ((epc_insn & BR32M) == BR32) {
+			child->thread.ss_nextcnt = 2;
+			tmp = (epc_insn >> 16) & 0x1F;
+			far_epc = regs->regs[tmp];
+			epc += 4;
+		} else
+			epc += 4;
+	}
+
+	if (child->thread.ss_nextcnt == 1) {
+		read_tsk_long(child, epc, &epc_insn);
+
+		if (is_16bitinsn(epc_insn)) {
+			write_tsk_short(child, epc, SINGLESTEP16_INSN);
+			ninsn_type = 0;
+		} else {
+			write_tsk_long(child, epc, SINGLESTEP32_INSN);
+			ninsn_type = 1;
+		}
+
+		if (ninsn_type == 0) {  /* 16bits */
+			child->thread.insn1_type = 0;
+			child->thread.addr1 = epc;
+			 /* the insn may have 32bit data */
+			child->thread.insn1 = (short)epc_insn;
+		} else {
+			child->thread.insn1_type = 1;
+			child->thread.addr1 = epc;
+			child->thread.insn1 = epc_insn;
+		}
+	} else {
+		/* branch! have two target child->thread.ss_nextcnt=2 */
+		read_tsk_long(child, epc, &epc_insn);
+		read_tsk_long(child, far_epc, &far_epc_insn);
+		if (is_16bitinsn(epc_insn)) {
+			write_tsk_short(child, epc, SINGLESTEP16_INSN);
+			ninsn_type = 0;
+		} else {
+			write_tsk_long(child, epc, SINGLESTEP32_INSN);
+			ninsn_type = 1;
+		}
+
+		if (ninsn_type == 0) {  /* 16bits */
+			child->thread.insn1_type = 0;
+			child->thread.addr1 = epc;
+			 /* the insn may have 32bit data */
+			child->thread.insn1 = (short)epc_insn;
+		} else {
+			child->thread.insn1_type = 1;
+			child->thread.addr1 = epc;
+			child->thread.insn1 = epc_insn;
+		}
+
+		if (is_16bitinsn(far_epc_insn)) {
+			write_tsk_short(child, far_epc, SINGLESTEP16_INSN);
+			ninsn_type = 0;
+		} else {
+			write_tsk_long(child, far_epc, SINGLESTEP32_INSN);
+			ninsn_type = 1;
+		}
+
+		if (ninsn_type == 0) {  /* 16bits */
+			child->thread.insn2_type = 0;
+			child->thread.addr2 = far_epc;
+			 /* the insn may have 32bit data */
+			child->thread.insn2 = (short)far_epc_insn;
+		} else {
+			child->thread.insn2_type = 1;
+			child->thread.addr2 = far_epc;
+			child->thread.insn2 = far_epc_insn;
+		}
+	}
+}
+
+void clear_single_step(struct task_struct *child)
+{
+	if (child->thread.insn1_type == 0)
+		write_tsk_short(child, child->thread.addr1,
+				child->thread.insn1);
+
+	if (child->thread.insn1_type == 1)
+		write_tsk_long(child, child->thread.addr1,
+				child->thread.insn1);
+
+	if (child->thread.ss_nextcnt == 2) {	/* branch */
+		if (child->thread.insn1_type == 0)
+			write_tsk_short(child, child->thread.addr1,
+					child->thread.insn1);
+		if (child->thread.insn1_type == 1)
+			write_tsk_long(child, child->thread.addr1,
+					child->thread.insn1);
+		if (child->thread.insn2_type == 0)
+			write_tsk_short(child, child->thread.addr2,
+					child->thread.insn2);
+		if (child->thread.insn2_type == 1)
+			write_tsk_long(child, child->thread.addr2,
+					child->thread.insn2);
+	}
+
+	child->thread.single_step = 0;
+	child->thread.ss_nextcnt = 0;
+}
+
+
+void ptrace_disable(struct task_struct *child) {}
+
+long
+arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+	int ret;
+
+	if (request == PTRACE_TRACEME) {
+		/* are we already being traced? */
+		if (current->ptrace & PT_PTRACED)
+			return -EPERM;
+
+		/* set the ptrace bit in the process flags. */
+		current->ptrace |= PT_PTRACED;
+		return 0;
+	}
+
+	ret = -ESRCH;
+	if (!child)
+		return ret;
+
+	ret = -EPERM;
+
+	if (request == PTRACE_ATTACH) {
+		ret = ptrace_attach(child);
+		return ret;
+	}
+
+	ret = ptrace_check_attach(child, request == PTRACE_KILL);
+	if (ret < 0)
+		return ret;
+
+	switch (request) {
+	case PTRACE_PEEKTEXT: /* read word at location addr. */
+	case PTRACE_PEEKDATA: {
+		unsigned long tmp;
+		int copied;
+
+		copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
+		ret = -EIO;
+		if (copied != sizeof(tmp))
+			break;
+
+		ret = put_user(tmp, (unsigned long *) data);
+		return ret;
+	}
+
+	/* Read the word at location addr in the USER area.  */
+	case PTRACE_PEEKUSR: {
+		struct pt_regs *regs;
+		unsigned long tmp;
+
+		regs = task_pt_regs(child);
+
+		tmp = 0;  /* Default return value. */
+		switch (addr) {
+		case 0 ... 31:
+			tmp = regs->regs[addr];
+			break;
+		case PC:
+			tmp = regs->cp0_epc;
+			break;
+		case ECR:
+			tmp = regs->cp0_ecr;
+			break;
+		case EMA:
+			tmp = regs->cp0_ema;
+			break;
+		case CEH:
+			tmp = regs->ceh;
+			break;
+		case CEL:
+			tmp = regs->cel;
+			break;
+		case CONDITION:
+			tmp = regs->cp0_condition;
+			break;
+		case PSR:
+			tmp = regs->cp0_psr;
+			break;
+		case COUNTER:
+			tmp = regs->sr0;
+			break;
+		case LDCR:
+			tmp = regs->sr1;
+			break;
+		case STCR:
+			tmp = regs->sr2;
+			break;
+		default:
+			tmp = 0;
+			return -EIO;
+		}
+
+		ret = put_user(tmp, (unsigned long *) data);
+		return ret;
+	}
+
+	case PTRACE_POKETEXT: /* write the word at location addr. */
+	case PTRACE_POKEDATA:
+		ret = 0;
+		if (access_process_vm(child, addr, &data, sizeof(data), 1)
+			== sizeof(data))
+			break;
+		ret = -EIO;
+		return ret;
+
+	case PTRACE_POKEUSR: {
+		struct pt_regs *regs;
+		ret = 0;
+		regs = task_pt_regs(child);
+
+		switch (addr) {
+		case 0 ... 31:
+			regs->regs[addr] = data;
+			break;
+		case PC:
+			regs->cp0_epc = data;
+			break;
+		case CEH:
+			regs->ceh = data;
+			break;
+		case CEL:
+			regs->cel = data;
+			break;
+		case CONDITION:
+			regs->cp0_condition = data;
+			break;
+		case PSR:
+		case COUNTER:
+		case STCR:
+		case LDCR:
+			break; /* user can't write the reg */
+		default:
+			/* The rest are not allowed. */
+			ret = -EIO;
+			break;
+		}
+		break;
+	}
+
+	case PTRACE_SYSCALL: /* continue and stop at next
+				(return from) syscall. */
+	case PTRACE_CONT: { /* restart after signal. */
+		ret = -EIO;
+		if (!valid_signal(data))
+			break;
+		if (request == PTRACE_SYSCALL)
+			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+		else
+			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+
+		child->exit_code = data;
+		wake_up_process(child);
+		ret = 0;
+		break;
+	}
+
+	/*
+	 * make the child exit.  Best I can do is send it a sigkill.
+	 * perhaps it should be put in the status that it wants to
+	 * exit.
+	 */
+	case PTRACE_KILL:
+		ret = 0;
+		if (child->state == EXIT_ZOMBIE)	/* already dead. */
+			break;
+		child->exit_code = SIGKILL;
+		clear_single_step(child);
+		wake_up_process(child);
+		break;
+
+	case PTRACE_SINGLESTEP: {		/* set the trap flag. */
+		ret = -EIO;
+		if ((unsigned long) data > _NSIG)
+			break;
+		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+		set_single_step(child);
+		child->exit_code = data;
+		/* give it a chance to run. */
+		wake_up_process(child);
+		ret = 0;
+		break;
+	}
+
+	case PTRACE_DETACH: /* detach a process that was attached. */
+		ret = ptrace_detach(child, data);
+		break;
+
+	case PTRACE_SETOPTIONS:
+		if (data & PTRACE_O_TRACESYSGOOD)
+			child->ptrace |= PT_TRACESYSGOOD;
+		else
+			child->ptrace &= ~PT_TRACESYSGOOD;
+		ret = 0;
+		break;
+
+	default:
+		ret = -EIO;
+		break;
+	}
+
+	return ret;
+}
+
+/*
+ * Notification of system call entry/exit
+ * - triggered by current->work.syscall_trace
+ */
+asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
+{
+	if (!(current->ptrace & PT_PTRACED))
+		return;
+
+	if (!test_thread_flag(TIF_SYSCALL_TRACE))
+		return;
+
+	/* The 0x80 provides a way for the tracing parent to distinguish
+	   between a syscall stop and SIGTRAP delivery. */
+	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ?
+			0x80 : 0));
+
+	/*
+	 * this isn't the same as continuing with a signal, but it will do
+	 * for normal use.  strace only continues with a signal if the
+	 * stopping signal is not SIGTRAP.  -brl
+	 */
+	if (current->exit_code) {
+		send_sig(current->exit_code, current, 1);
+		current->exit_code = 0;
+	}
+}
diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c
new file mode 100644
index 0000000..a172ce1
--- /dev/null
+++ b/arch/score/kernel/setup.c
@@ -0,0 +1,157 @@
+/*
+ * arch/score/kernel/setup.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/bootmem.h>
+#include <linux/initrd.h>
+#include <linux/ioport.h>
+#include <linux/seq_file.h>
+#include <linux/screen_info.h>
+
+#include <asm-generic/sections.h>
+
+struct screen_info screen_info;
+unsigned long kernelsp;
+
+static char command_line[COMMAND_LINE_SIZE];
+static struct resource code_resource = { .name = "Kernel code",};
+static struct resource data_resource = { .name = "Kernel data",};
+
+static void __init bootmem_init(void)
+{
+	unsigned long reserved_end, bootmap_size;
+	unsigned long size = initrd_end - initrd_start;
+
+	reserved_end = (unsigned long)_end;
+
+	min_low_pfn = 0;
+	max_low_pfn = MEM_SIZE / PAGE_SIZE;
+
+	/* Initialize the boot-time allocator with low memory only. */
+	bootmap_size = init_bootmem_node(NODE_DATA(0), reserved_end,
+					 min_low_pfn, max_low_pfn);
+	add_active_range(0, min_low_pfn, max_low_pfn);
+
+	free_bootmem(PFN_PHYS(reserved_end),
+		     (max_low_pfn - reserved_end) << PAGE_SHIFT);
+	memory_present(0, reserved_end, max_low_pfn);
+
+	/* Reserve space for the bootmem bitmap. */
+	reserve_bootmem(PFN_PHYS(reserved_end), bootmap_size, BOOTMEM_DEFAULT);
+
+	if (size == 0) {
+		printk(KERN_INFO "Initrd not found or empty");
+		goto disable;
+	}
+
+	if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
+		printk(KERN_ERR "Initrd extends beyond end of memory");
+		goto disable;
+	}
+
+	/* Reserve space for the initrd bitmap. */
+	reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);
+	initrd_below_start_ok = 1;
+
+	pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",
+		 initrd_start, size);
+	return;
+disable:
+	printk(KERN_CONT " - disabling initrd\n");
+	initrd_start = 0;
+	initrd_end = 0;
+}
+
+static void __init resource_init(void)
+{
+	struct resource *res;
+
+	code_resource.start = (unsigned long)_text;
+	code_resource.end = (unsigned long)_etext - 1;
+	data_resource.start = (unsigned long)_etext;
+	data_resource.end = (unsigned long)_edata - 1;
+
+	res = alloc_bootmem(sizeof(struct resource));
+	res->name = "System RAM";
+	res->start = 0;
+	res->end = MEM_SIZE - 1;
+	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+	request_resource(&iomem_resource, res);
+
+	request_resource(res, &code_resource);
+	request_resource(res, &data_resource);
+}
+
+void __init setup_arch(char **cmdline_p)
+{
+	randomize_va_space = 0;
+	*cmdline_p = command_line;
+
+	cpu_cache_init();
+	tlb_init();
+	bootmem_init();
+	paging_init();
+	resource_init();
+}
+
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+	unsigned long n = (unsigned long) v - 1;
+
+	seq_printf(m, "processor\t\t: %ld\n", n);
+	seq_printf(m, "\n");
+
+	return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	unsigned long i = *pos;
+
+	return i < 1 ? (void *) (i + 1) : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	++*pos;
+	return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+const struct seq_operations cpuinfo_op = {
+	.start	= c_start,
+	.next	= c_next,
+	.stop	= c_stop,
+	.show	= show_cpuinfo,
+};
+
+static int __init topology_init(void)
+{
+	return 0;
+}
+
+subsys_initcall(topology_init);
diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
new file mode 100644
index 0000000..b4ed1b3
--- /dev/null
+++ b/arch/score/kernel/signal.c
@@ -0,0 +1,355 @@
+/*
+ * arch/score/kernel/signal.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+#include <linux/uaccess.h>
+#include <asm-generic/ucontext.h>
+
+#include <asm/cacheflush.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+struct rt_sigframe {
+	u32 rs_ass[4];		/* argument save space */
+	u32 rs_code[2];		/* signal trampoline */
+	struct siginfo rs_info;
+	struct ucontext rs_uc;
+};
+
+int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+{
+	int err = 0;
+	unsigned long reg;
+
+	reg = regs->cp0_epc; err |= __put_user(reg, &sc->sc_pc);
+	err |= __put_user(regs->cp0_psr, &sc->sc_psr);
+	err |= __put_user(regs->cp0_condition, &sc->sc_condition);
+
+
+#define save_gp_reg(i) {				\
+	reg = regs->regs[i];				\
+	err |= __put_user(reg, &sc->sc_regs[i]);	\
+} while (0)
+	save_gp_reg(0); save_gp_reg(1); save_gp_reg(2);
+	save_gp_reg(3); save_gp_reg(4); save_gp_reg(5);
+	save_gp_reg(6);	save_gp_reg(7); save_gp_reg(8);
+	save_gp_reg(9); save_gp_reg(10); save_gp_reg(11);
+	save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
+	save_gp_reg(15); save_gp_reg(16); save_gp_reg(17);
+	save_gp_reg(18); save_gp_reg(19); save_gp_reg(20);
+	save_gp_reg(21); save_gp_reg(22); save_gp_reg(23);
+	save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
+	save_gp_reg(27); save_gp_reg(28); save_gp_reg(29);
+#undef save_gp_reg
+
+	reg = regs->ceh; err |= __put_user(reg, &sc->sc_mdceh);
+	reg = regs->cel; err |= __put_user(reg, &sc->sc_mdcel);
+	err |= __put_user(regs->cp0_ecr, &sc->sc_ecr);
+	err |= __put_user(regs->cp0_ema, &sc->sc_ema);
+
+	return err;
+}
+
+int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+{
+	int err = 0;
+	u32 reg;
+
+	err |= __get_user(regs->cp0_epc, &sc->sc_pc);
+	err |= __get_user(regs->cp0_condition, &sc->sc_condition);
+
+	err |= __get_user(reg, &sc->sc_mdceh);
+	regs->ceh = (int) reg;
+	err |= __get_user(reg, &sc->sc_mdcel);
+	regs->cel = (int) reg;
+
+	err |= __get_user(reg, &sc->sc_psr);
+	regs->cp0_psr = (int) reg;
+	err |= __get_user(reg, &sc->sc_ecr);
+	regs->cp0_ecr = (int) reg;
+	err |= __get_user(reg, &sc->sc_ema);
+	regs->cp0_ema = (int) reg;
+
+#define restore_gp_reg(i) do {				\
+	err |= __get_user(reg, &sc->sc_regs[i]);	\
+	regs->regs[i] = reg;				\
+} while (0)
+	restore_gp_reg(0); restore_gp_reg(1); restore_gp_reg(2);
+	restore_gp_reg(3); restore_gp_reg(4); restore_gp_reg(5);
+	restore_gp_reg(6); restore_gp_reg(7); restore_gp_reg(8);
+	restore_gp_reg(9); restore_gp_reg(10); restore_gp_reg(11);
+	restore_gp_reg(12); restore_gp_reg(13); restore_gp_reg(14);
+	restore_gp_reg(15); restore_gp_reg(16); restore_gp_reg(17);
+	restore_gp_reg(18); restore_gp_reg(19);	restore_gp_reg(20);
+	restore_gp_reg(21); restore_gp_reg(22); restore_gp_reg(23);
+	restore_gp_reg(24); restore_gp_reg(25); restore_gp_reg(26);
+	restore_gp_reg(27); restore_gp_reg(28); restore_gp_reg(29);
+#undef restore_gp_reg
+
+	return err;
+}
+
+/*
+ * Determine which stack to use..
+ */
+void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+			size_t frame_size)
+{
+	unsigned long sp;
+
+	/* Default to using normal stack */
+	sp = regs->regs[0];
+	sp -= 32;
+
+	/* This is the X/Open sanctioned signal stack switching.  */
+	if ((ka->sa.sa_flags & SA_ONSTACK) && (!on_sig_stack(sp)))
+		sp = current->sas_ss_sp + current->sas_ss_size;
+
+	return (void *)((sp - frame_size) & ~7);
+}
+
+asmlinkage int score_sigaltstack(struct pt_regs *regs)
+{
+	const stack_t *uss = (const stack_t *) regs->regs[4];
+	stack_t *uoss = (stack_t *) regs->regs[5];
+	unsigned long usp = regs->regs[0];
+
+	return do_sigaltstack(uss, uoss, usp);
+}
+
+asmlinkage void score_rt_sigreturn(struct pt_regs *regs)
+{
+	struct rt_sigframe __user *frame;
+	sigset_t set;
+	stack_t st;
+	int sig;
+
+	frame = (struct rt_sigframe __user *) regs->regs[0];
+	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+		goto badframe;
+	if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
+		goto badframe;
+
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+	current->blocked = set;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);
+	if (sig < 0)
+		goto badframe;
+	else if (sig)
+		force_sig(sig, current);
+
+	if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st)))
+		goto badframe;
+
+	/* It is more difficult to avoid calling this function than to
+	   call it and ignore errors.  */
+	do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]);
+
+	__asm__ __volatile__(
+		"mv\tr0, %0\n\t"
+		"la\tr8, syscall_exit\n\t"
+		"br\tr8\n\t"
+		: : "r" (regs) : "r8");
+
+badframe:
+	force_sig(SIGSEGV, current);
+}
+
+int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
+		int signr, sigset_t *set, siginfo_t *info)
+{
+	struct rt_sigframe *frame;
+	int err = 0;
+
+	frame = get_sigframe(ka, regs, sizeof(*frame));
+	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+		goto give_sigsegv;
+
+	/*
+	 * Set up the return code ...
+	 *
+	 *         li      v0, __NR_rt_sigreturn
+	 *         syscall
+	 */
+	err |= __put_user(0x87788000 + __NR_rt_sigreturn*2,
+			frame->rs_code + 0);
+	err |= __put_user(0x80008002, frame->rs_code + 1);
+	flush_cache_sigtramp((unsigned long) frame->rs_code);
+
+	err |= copy_siginfo_to_user(&frame->rs_info, info);
+	err |= __put_user(0, &frame->rs_uc.uc_flags);
+	err |= __put_user(0, &frame->rs_uc.uc_link);
+	err |= __put_user((void *)current->sas_ss_sp,
+				&frame->rs_uc.uc_stack.ss_sp);
+	err |= __put_user(sas_ss_flags(regs->regs[0]),
+				&frame->rs_uc.uc_stack.ss_flags);
+	err |= __put_user(current->sas_ss_size,
+				&frame->rs_uc.uc_stack.ss_size);
+	err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
+	err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
+
+	if (err)
+		goto give_sigsegv;
+
+	regs->regs[0] = (unsigned long) frame;
+	regs->regs[3] = (unsigned long) frame->rs_code;
+	regs->regs[4] = signr;
+	regs->regs[5] = (unsigned long) &frame->rs_info;
+	regs->regs[6] = (unsigned long) &frame->rs_uc;
+	regs->regs[29] = (unsigned long) ka->sa.sa_handler;
+	regs->cp0_epc = (unsigned long) ka->sa.sa_handler;
+
+	return 0;
+
+give_sigsegv:
+	if (signr == SIGSEGV)
+		ka->sa.sa_handler = SIG_DFL;
+	force_sig(SIGSEGV, current);
+	return -EFAULT;
+}
+
+int handle_signal(unsigned long sig, siginfo_t *info,
+	struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
+{
+	int ret;
+
+	if (regs->is_syscall) {
+		switch (regs->regs[4]) {
+		case ERESTART_RESTARTBLOCK:
+		case ERESTARTNOHAND:
+			regs->regs[4] = EINTR;
+			break;
+		case ERESTARTSYS:
+			if (!(ka->sa.sa_flags & SA_RESTART)) {
+				regs->regs[4] = EINTR;
+				break;
+			}
+		case ERESTARTNOINTR:
+			regs->regs[4] = regs->orig_r4;
+			regs->regs[7] = regs->orig_r7;
+			regs->cp0_epc -= 8;
+		}
+
+		regs->is_syscall = 0;
+	}
+
+	/*
+	 * Set up the stack frame
+	 */
+	ret = setup_rt_frame(ka, regs, sig, oldset, info);
+
+	spin_lock_irq(&current->sighand->siglock);
+	sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
+	if (!(ka->sa.sa_flags & SA_NODEFER))
+		sigaddset(&current->blocked, sig);
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	return ret;
+}
+
+asmlinkage void do_signal(struct pt_regs *regs)
+{
+	struct k_sigaction ka;
+	sigset_t *oldset;
+	siginfo_t info;
+	int signr;
+
+	/*
+	 * We want the common case to go fast, which is why we may in certain
+	 * cases get here from kernel mode. Just return without doing anything
+	 * if so.
+	 */
+	if (!user_mode(regs))
+		return;
+
+	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+		oldset = &current->saved_sigmask;
+	else
+		oldset = &current->blocked;
+
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+	if (signr > 0) {
+		/* Actually deliver the signal.  */
+		if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
+			/*
+			 * A signal was successfully delivered; the saved
+			 * sigmask will have been stored in the signal frame,
+			 * and will be restored by sigreturn, so we can simply
+			 * clear the TIF_RESTORE_SIGMASK flag.
+			 */
+			if (test_thread_flag(TIF_RESTORE_SIGMASK))
+				clear_thread_flag(TIF_RESTORE_SIGMASK);
+		}
+
+		return;
+	}
+
+	if (regs->is_syscall) {
+		if (regs->regs[4] == ERESTARTNOHAND ||
+		    regs->regs[4] == ERESTARTSYS ||
+		    regs->regs[4] == ERESTARTNOINTR) {
+			regs->regs[4] = regs->orig_r4;
+			regs->regs[7] = regs->orig_r7;
+			regs->cp0_epc -= 8;
+		}
+
+		if (regs->regs[4] == ERESTART_RESTARTBLOCK) {
+			regs->regs[27] = __NR_restart_syscall;
+			regs->regs[4] = regs->orig_r4;
+			regs->regs[7] = regs->orig_r7;
+			regs->cp0_epc -= 8;
+		}
+
+		regs->is_syscall = 0;	/* Don't deal with this again.  */
+	}
+
+	/*
+	 * If there's no signal to deliver, we just put the saved sigmask
+	 * back
+	 */
+	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+		clear_thread_flag(TIF_RESTORE_SIGMASK);
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
+}
+
+/*
+ * notification of userspace execution resumption
+ * - triggered by the TIF_WORK_MASK flags
+ */
+asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
+				__u32 thread_info_flags)
+{
+	/* deal with pending signal delivery */
+	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+		do_signal(regs);
+}
diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c
new file mode 100644
index 0000000..6a60d1e
--- /dev/null
+++ b/arch/score/kernel/sys_score.c
@@ -0,0 +1,147 @@
+/*
+ * arch/score/kernel/syscall.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/unistd.h>
+
+unsigned long shm_align_mask = PAGE_SIZE - 1;
+EXPORT_SYMBOL(shm_align_mask);
+
+asmlinkage unsigned long
+sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
+	  unsigned long flags, unsigned long fd, unsigned long pgoff)
+{
+	int error = -EBADF;
+	struct file *file = NULL;
+
+	if (pgoff & (~PAGE_MASK >> 12))
+		return -EINVAL;
+
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	if (!(flags & MAP_ANONYMOUS)) {
+		file = fget(fd);
+		if (!file)
+			return error;
+	}
+
+	down_write(&current->mm->mmap_sem);
+	error = do_mmap_pgoff(file, addr, len, prot, flags,
+			pgoff >> (PAGE_SHIFT - 12));
+	up_write(&current->mm->mmap_sem);
+
+	if (file)
+		fput(file);
+
+	return error;
+}
+
+/*
+ * Clone a task - this clones the calling program thread.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage int
+score_clone(struct pt_regs *regs)
+{
+	unsigned long clone_flags;
+	unsigned long newsp;
+	int __user *parent_tidptr, *child_tidptr;
+
+	clone_flags = regs->regs[4];
+	newsp = regs->regs[5];
+	if (!newsp)
+		newsp = regs->regs[0];
+	parent_tidptr = (int __user *)regs->regs[6];
+
+	child_tidptr = NULL;
+	if (clone_flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)) {
+		int __user *__user *usp = (int __user *__user *)regs->regs[0];
+
+		if (get_user(child_tidptr, &usp[4]))
+			return -EFAULT;
+	}
+
+	return do_fork(clone_flags, newsp, regs, 0,
+			parent_tidptr, child_tidptr);
+}
+
+/*
+ * sys_execve() executes a new program.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage int score_execve(struct pt_regs *regs)
+{
+	int error;
+	char *filename;
+
+	filename = getname((char *) (long) regs->regs[4]);
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		return error;
+
+	error = do_execve(filename, (char **) (long) regs->regs[5],
+			  (char **) (long) regs->regs[6], regs);
+
+	putname(filename);
+	return error;
+}
+
+/*
+ * If we ever come here the user sp is bad.  Zap the process right away.
+ * Due to the bad stack signaling wouldn't work.
+ */
+asmlinkage void bad_stack(void)
+{
+	do_exit(SIGSEGV);
+}
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+{
+	register unsigned long __r4 asm("r4") = (unsigned long) filename;
+	register unsigned long __r5 asm("r5") = (unsigned long) argv;
+	register unsigned long __r6 asm("r6") = (unsigned long) envp;
+	register unsigned long __r7 asm("r7");
+
+	__asm__ __volatile__ ("	\n"
+		"ldi	r27, %5		\n"
+		"syscall		\n"
+		"mv	%0, r4		\n"
+		"mv	%1, r7		\n"
+		: "=&r" (__r4), "=r" (__r7)
+		: "r" (__r4), "r" (__r5), "r" (__r6), "i" (__NR_execve)
+		: "r8", "r9", "r10", "r11", "r22", "r23", "r24", "r25",
+		  "r26", "r27", "memory");
+
+	if (__r7 == 0)
+		return __r4;
+
+	return -__r4;
+}
diff --git a/arch/score/kernel/time.c b/arch/score/kernel/time.c
new file mode 100644
index 0000000..cd66ba3
--- /dev/null
+++ b/arch/score/kernel/time.c
@@ -0,0 +1,99 @@
+/*
+ * arch/score/kernel/time.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/clockchips.h>
+#include <linux/interrupt.h>
+
+#include <asm/scoreregs.h>
+
+irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+	struct clock_event_device *evdev = dev_id;
+
+	/* clear timer interrupt flag */
+	outl(1, P_TIMER0_CPP_REG);
+	evdev->event_handler(evdev);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction timer_irq = {
+	.handler = timer_interrupt,
+	.flags = IRQF_DISABLED | IRQF_TIMER,
+	.name = "timer",
+};
+
+static int score_timer_set_next_event(unsigned long delta,
+		struct clock_event_device *evdev)
+{
+	outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
+	outl(delta, P_TIMER0_PRELOAD);
+	outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
+
+	return 0;
+}
+
+static void score_timer_set_mode(enum clock_event_mode mode,
+		struct clock_event_device *evdev)
+{
+	switch (mode) {
+	case CLOCK_EVT_MODE_PERIODIC:
+		outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
+		outl(SYSTEM_CLOCK/HZ, P_TIMER0_PRELOAD);
+		outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
+		break;
+	case CLOCK_EVT_MODE_ONESHOT:
+	case CLOCK_EVT_MODE_SHUTDOWN:
+	case CLOCK_EVT_MODE_RESUME:
+	case CLOCK_EVT_MODE_UNUSED:
+		break;
+	default:
+		BUG();
+	}
+}
+
+static struct clock_event_device score_clockevent = {
+	.name		= "score_clockevent",
+	.features	= CLOCK_EVT_FEAT_PERIODIC,
+	.shift		= 16,
+	.set_next_event	= score_timer_set_next_event,
+	.set_mode	= score_timer_set_mode,
+};
+
+void __init time_init(void)
+{
+	timer_irq.dev_id = &score_clockevent;
+	setup_irq(IRQ_TIMER , &timer_irq);
+
+	/* setup COMPARE clockevent */
+	score_clockevent.mult = div_sc(SYSTEM_CLOCK, NSEC_PER_SEC,
+					score_clockevent.shift);
+	score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0,
+					&score_clockevent);
+	score_clockevent.min_delta_ns = clockevent_delta2ns(50,
+						&score_clockevent) + 1;
+	score_clockevent.cpumask = cpumask_of(0);
+	clockevents_register_device(&score_clockevent);
+}
diff --git a/arch/score/kernel/traps.c b/arch/score/kernel/traps.c
new file mode 100644
index 0000000..957ae9e
--- /dev/null
+++ b/arch/score/kernel/traps.c
@@ -0,0 +1,349 @@
+/*
+ * arch/score/kernel/traps.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/irq_regs.h>
+
+unsigned long exception_handlers[32];
+
+/*
+ * The architecture-independent show_stack generator
+ */
+void show_stack(struct task_struct *task, unsigned long *sp)
+{
+	int i;
+	long stackdata;
+
+	sp = sp ? sp : (unsigned long *)&sp;
+
+	printk(KERN_NOTICE "Stack: ");
+	i = 1;
+	while ((long) sp & (PAGE_SIZE - 1)) {
+		if (i && ((i % 8) == 0))
+			printk(KERN_NOTICE "\n");
+		if (i > 40) {
+			printk(KERN_NOTICE " ...");
+			break;
+		}
+
+		if (__get_user(stackdata, sp++)) {
+			printk(KERN_NOTICE " (Bad stack address)");
+			break;
+		}
+
+		printk(KERN_NOTICE " %08lx", stackdata);
+		i++;
+	}
+	printk(KERN_NOTICE "\n");
+}
+
+static void show_trace(long *sp)
+{
+	int i;
+	long addr;
+
+	sp = sp ? sp : (long *) &sp;
+
+	printk(KERN_NOTICE "Call Trace:  ");
+	i = 1;
+	while ((long) sp & (PAGE_SIZE - 1)) {
+		if (__get_user(addr, sp++)) {
+			if (i && ((i % 6) == 0))
+				printk(KERN_NOTICE "\n");
+			printk(KERN_NOTICE " (Bad stack address)\n");
+			break;
+		}
+
+		if (kernel_text_address(addr)) {
+			if (i && ((i % 6) == 0))
+				printk(KERN_NOTICE "\n");
+			if (i > 40) {
+				printk(KERN_NOTICE " ...");
+				break;
+			}
+
+			printk(KERN_NOTICE " [<%08lx>]", addr);
+			i++;
+		}
+	}
+	printk(KERN_NOTICE "\n");
+}
+
+static void show_code(unsigned int *pc)
+{
+	long i;
+
+	printk(KERN_NOTICE "\nCode:");
+
+	for (i = -3; i < 6; i++) {
+		unsigned long insn;
+		if (__get_user(insn, pc + i)) {
+			printk(KERN_NOTICE " (Bad address in epc)\n");
+			break;
+		}
+		printk(KERN_NOTICE "%c%08lx%c", (i ? ' ' : '<'),
+			insn, (i ? ' ' : '>'));
+	}
+}
+
+/*
+ * FIXME: really the generic show_regs should take a const pointer argument.
+ */
+void show_regs(struct pt_regs *regs)
+{
+	printk("r0 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+		regs->regs[0], regs->regs[1], regs->regs[2], regs->regs[3],
+		regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
+	printk("r8 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+		regs->regs[8], regs->regs[9], regs->regs[10], regs->regs[11],
+		regs->regs[12], regs->regs[13], regs->regs[14], regs->regs[15]);
+	printk("r16: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+		regs->regs[16], regs->regs[17], regs->regs[18], regs->regs[19],
+		regs->regs[20], regs->regs[21], regs->regs[22], regs->regs[23]);
+	printk("r24: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+		regs->regs[24], regs->regs[25], regs->regs[26], regs->regs[27],
+		regs->regs[28], regs->regs[29], regs->regs[30], regs->regs[31]);
+
+	printk("CEH : %08lx\n", regs->ceh);
+	printk("CEL : %08lx\n", regs->cel);
+
+	printk("EMA:%08lx, epc:%08lx %s\nPSR: %08lx\nECR:%08lx\nCondition : %08lx\n",
+		regs->cp0_ema, regs->cp0_epc, print_tainted(), regs->cp0_psr,
+		regs->cp0_ecr, regs->cp0_condition);
+}
+
+static void show_registers(struct pt_regs *regs)
+{
+	show_regs(regs);
+	printk(KERN_NOTICE "Process %s (pid: %d, stackpage=%08lx)\n",
+		current->comm, current->pid, (unsigned long) current);
+	show_stack(current_thread_info()->task, (long *) regs->regs[0]);
+	show_trace((long *) regs->regs[0]);
+	show_code((unsigned int *) regs->cp0_epc);
+	printk(KERN_NOTICE "\n");
+}
+
+/*
+ * The architecture-independent dump_stack generator
+ */
+void dump_stack(void)
+{
+	show_stack(current_thread_info()->task,
+		   (long *) get_irq_regs()->regs[0]);
+}
+EXPORT_SYMBOL(dump_stack);
+
+void __die(const char *str, struct pt_regs *regs, const char *file,
+	const char *func, unsigned long line)
+{
+	console_verbose();
+	printk("%s", str);
+	if (file && func)
+		printk(" in %s:%s, line %ld", file, func, line);
+	printk(":\n");
+	show_registers(regs);
+	do_exit(SIGSEGV);
+}
+
+void __die_if_kernel(const char *str, struct pt_regs *regs,
+		const char *file, const char *func, unsigned long line)
+{
+	if (!user_mode(regs))
+		__die(str, regs, file, func, line);
+}
+
+asmlinkage void do_adelinsn(struct pt_regs *regs)
+{
+	printk("do_ADE-linsn:ema:0x%08lx:epc:0x%08lx\n",
+		 regs->cp0_ema, regs->cp0_epc);
+	die_if_kernel("do_ade execution Exception\n", regs);
+	force_sig(SIGBUS, current);
+}
+
+asmlinkage void do_adedata(struct pt_regs *regs)
+{
+	const struct exception_table_entry *fixup;
+	fixup = search_exception_tables(regs->cp0_epc);
+	if (fixup) {
+		regs->cp0_epc = fixup->fixup;
+		return;
+	}
+	printk("do_ADE-data:ema:0x%08lx:epc:0x%08lx\n",
+		 regs->cp0_ema, regs->cp0_epc);
+	die_if_kernel("do_ade execution Exception\n", regs);
+	force_sig(SIGBUS, current);
+}
+
+asmlinkage void do_pel(struct pt_regs *regs)
+{
+	die_if_kernel("do_pel execution Exception", regs);
+	force_sig(SIGFPE, current);
+}
+
+asmlinkage void do_cee(struct pt_regs *regs)
+{
+	die_if_kernel("do_cee execution Exception", regs);
+	force_sig(SIGFPE, current);
+}
+
+asmlinkage void do_cpe(struct pt_regs *regs)
+{
+	die_if_kernel("do_cpe execution Exception", regs);
+	force_sig(SIGFPE, current);
+}
+
+asmlinkage void do_be(struct pt_regs *regs)
+{
+	die_if_kernel("do_be execution Exception", regs);
+	force_sig(SIGBUS, current);
+}
+
+asmlinkage void do_ov(struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	die_if_kernel("do_ov execution Exception", regs);
+
+	info.si_code = FPE_INTOVF;
+	info.si_signo = SIGFPE;
+	info.si_errno = 0;
+	info.si_addr = (void *)regs->cp0_epc;
+	force_sig_info(SIGFPE, &info, current);
+}
+
+asmlinkage void do_tr(struct pt_regs *regs)
+{
+	die_if_kernel("do_tr execution Exception", regs);
+	force_sig(SIGTRAP, current);
+}
+
+asmlinkage void do_ri(struct pt_regs *regs)
+{
+	unsigned long epc_insn;
+	unsigned long epc = regs->cp0_epc;
+
+	read_tsk_long(current, epc, &epc_insn);
+	if (current->thread.single_step == 1) {
+		if ((epc == current->thread.addr1) ||
+		    (epc == current->thread.addr2)) {
+			clear_single_step(current);
+			force_sig(SIGTRAP, current);
+			return;
+		} else
+			BUG();
+	} else if ((epc_insn == BREAKPOINT32_INSN) ||
+		   ((epc_insn & 0x0000FFFF) == 0x7002) ||
+		   ((epc_insn & 0xFFFF0000) == 0x70020000)) {
+			force_sig(SIGTRAP, current);
+			return;
+	} else {
+		die_if_kernel("do_ri execution Exception", regs);
+		force_sig(SIGILL, current);
+	}
+}
+
+asmlinkage void do_ccu(struct pt_regs *regs)
+{
+	die_if_kernel("do_ccu execution Exception", regs);
+	force_sig(SIGILL, current);
+}
+
+asmlinkage void do_reserved(struct pt_regs *regs)
+{
+	/*
+	 * Game over - no way to handle this if it ever occurs.  Most probably
+	 * caused by a new unknown cpu type or after another deadly
+	 * hard/software error.
+	 */
+	die_if_kernel("do_reserved execution Exception", regs);
+	show_regs(regs);
+	panic("Caught reserved exception - should not happen.");
+}
+
+/*
+ * NMI exception handler.
+ */
+void nmi_exception_handler(struct pt_regs *regs)
+{
+	die_if_kernel("nmi_exception_handler execution Exception", regs);
+	die("NMI", regs);
+}
+
+/* Install CPU exception handler */
+void *set_except_vector(int n, void *addr)
+{
+	unsigned long handler = (unsigned long) addr;
+	unsigned long old_handler = exception_handlers[n];
+
+	exception_handlers[n] = handler;
+	return (void *)old_handler;
+}
+
+void __init trap_init(void)
+{
+	int i;
+
+	pgd_current = (unsigned long)init_mm.pgd;
+	/* DEBUG EXCEPTION */
+	memcpy((void *)DEBUG_VECTOR_BASE_ADDR,
+			&debug_exception_vector, DEBUG_VECTOR_SIZE);
+	/* NMI EXCEPTION */
+	memcpy((void *)GENERAL_VECTOR_BASE_ADDR,
+			&general_exception_vector, GENERAL_VECTOR_SIZE);
+
+	/*
+	 * Initialise exception handlers
+	 */
+	for (i = 0; i <= 31; i++)
+		set_except_vector(i, handle_reserved);
+
+	set_except_vector(1, handle_nmi);
+	set_except_vector(2, handle_adelinsn);
+	set_except_vector(3, handle_tlb_refill);
+	set_except_vector(4, handle_tlb_invaild);
+	set_except_vector(5, handle_ibe);
+	set_except_vector(6, handle_pel);
+	set_except_vector(7, handle_sys);
+	set_except_vector(8, handle_ccu);
+	set_except_vector(9, handle_ri);
+	set_except_vector(10, handle_tr);
+	set_except_vector(11, handle_adedata);
+	set_except_vector(12, handle_adedata);
+	set_except_vector(13, handle_tlb_refill);
+	set_except_vector(14, handle_tlb_invaild);
+	set_except_vector(15, handle_mod);
+	set_except_vector(16, handle_cee);
+	set_except_vector(17, handle_cpe);
+	set_except_vector(18, handle_dbe);
+	flush_icache_range(DEBUG_VECTOR_BASE_ADDR, IRQ_VECTOR_BASE_ADDR);
+
+	atomic_inc(&init_mm.mm_count);
+	current->active_mm = &init_mm;
+	cpu_cache_init();
+}
diff --git a/arch/score/kernel/vmlinux.lds.S b/arch/score/kernel/vmlinux.lds.S
new file mode 100644
index 0000000..f855698
--- /dev/null
+++ b/arch/score/kernel/vmlinux.lds.S
@@ -0,0 +1,148 @@
+/*
+ * arch/score/kernel/vmlinux.lds.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <asm-generic/vmlinux.lds.h>
+
+OUTPUT_ARCH(score)
+ENTRY(_stext)
+
+jiffies = jiffies_64;
+
+SECTIONS
+{
+	. = CONFIG_MEMORY_START + 0x2000;
+	/* read-only */
+	.text : {
+		_text = .;	/* Text and read-only data */
+		TEXT_TEXT
+		SCHED_TEXT
+		LOCK_TEXT
+		KPROBES_TEXT
+		*(.text.*)
+		*(.fixup)
+		. = ALIGN (4) ;
+		_etext = .;	/* End of text section */
+	}
+
+	. = ALIGN(16);
+	RODATA
+
+	/* Exception table */
+	. = ALIGN(16);
+	__ex_table : {
+		__start___ex_table = .;
+		*(__ex_table)
+		__stop___ex_table = .;
+	}
+
+	/* writeable */
+	.data ALIGN (4096): {
+		*(.data.init_task)
+
+		DATA_DATA
+		CONSTRUCTORS
+	}
+
+	/* We want the small data sections together, so single-instruction offsets
+	   can access them all, and initialized data all before uninitialized, so
+	   we can shorten the on-disk segment size.  */
+	. = ALIGN(8);
+	.sdata : {
+		*(.sdata)
+	}
+
+	. = ALIGN(32);
+	.data.cacheline_aligned : {
+		*(.data.cacheline_aligned)
+	}
+	_edata =  .;			/* End of data section */
+
+	/* will be freed after init */
+	. = ALIGN(4096);		/* Init code and data */
+	__init_begin = .;
+
+	. = ALIGN(4096);
+	.init.text : {
+		_sinittext = .;
+		INIT_TEXT
+		_einittext = .;
+	}
+	.init.data : {
+		INIT_DATA
+	}
+	. = ALIGN(16);
+	.init.setup : {
+		__setup_start = .;
+		*(.init.setup)
+		__setup_end = .;
+	}
+
+	.initcall.init : {
+		__initcall_start = .;
+		INITCALLS
+		__initcall_end = .;
+	}
+
+	.con_initcall.init : {
+		__con_initcall_start = .;
+		*(.con_initcall.init)
+		__con_initcall_end = .;
+	}
+	SECURITY_INIT
+
+	/* .exit.text is discarded at runtime, not link time, to deal with
+	 * references from .rodata
+	 */
+	.exit.text : {
+		EXIT_TEXT
+	}
+	.exit.data : {
+		EXIT_DATA
+	}
+#if defined(CONFIG_BLK_DEV_INITRD)
+	.init.ramfs ALIGN(4096): {
+		__initramfs_start = .;
+		*(.init.ramfs)
+		__initramfs_end = .;
+		. = ALIGN(4);
+		LONG(0);
+	}
+#endif
+	. = ALIGN(4096);
+	__init_end = .;
+	/* freed after init ends here */
+
+	__bss_start = .;	/* BSS */
+	.sbss  : {
+		*(.sbss)
+		*(.scommon)
+	}
+	.bss : {
+		*(.bss)
+		*(COMMON)
+	}
+	__bss_stop = .;
+	_end = .;
+}
diff --git a/arch/score/lib/Makefile b/arch/score/lib/Makefile
new file mode 100644
index 0000000..553e30e
--- /dev/null
+++ b/arch/score/lib/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for SCORE-specific library files..
+#
+
+lib-y += string.o checksum.o checksum_copy.o
+
+# libgcc-style stuff needed in the kernel
+obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
diff --git a/arch/score/lib/ashldi3.c b/arch/score/lib/ashldi3.c
new file mode 100644
index 0000000..15691a9
--- /dev/null
+++ b/arch/score/lib/ashldi3.c
@@ -0,0 +1,46 @@
+/*
+ * arch/score/lib/ashldi3.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __ashldi3(long long u, word_type b)
+{
+	DWunion uu, w;
+	word_type bm;
+
+	if (b == 0)
+		return u;
+
+	uu.ll = u;
+	bm = 32 - b;
+
+	if (bm <= 0) {
+		w.s.low = 0;
+		w.s.high = (unsigned int) uu.s.low << -bm;
+	} else {
+		const unsigned int carries = (unsigned int) uu.s.low >> bm;
+
+		w.s.low = (unsigned int) uu.s.low << b;
+		w.s.high = ((unsigned int) uu.s.high << b) | carries;
+	}
+
+	return w.ll;
+}
+EXPORT_SYMBOL(__ashldi3);
diff --git a/arch/score/lib/ashrdi3.c b/arch/score/lib/ashrdi3.c
new file mode 100644
index 0000000..d9814a5
--- /dev/null
+++ b/arch/score/lib/ashrdi3.c
@@ -0,0 +1,48 @@
+/*
+ * arch/score/lib/ashrdi3.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __ashrdi3(long long u, word_type b)
+{
+	DWunion uu, w;
+	word_type bm;
+
+	if (b == 0)
+		return u;
+
+	uu.ll = u;
+	bm = 32 - b;
+
+	if (bm <= 0) {
+		/* w.s.high = 1..1 or 0..0 */
+		w.s.high =
+		    uu.s.high >> 31;
+		w.s.low = uu.s.high >> -bm;
+	} else {
+		const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+		w.s.high = uu.s.high >> b;
+		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+	}
+
+	return w.ll;
+}
+EXPORT_SYMBOL(__ashrdi3);
diff --git a/arch/score/lib/checksum.S b/arch/score/lib/checksum.S
new file mode 100644
index 0000000..706157e
--- /dev/null
+++ b/arch/score/lib/checksum.S
@@ -0,0 +1,255 @@
+/*
+ * arch/score/lib/csum_partial.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/linkage.h>
+
+#define ADDC(sum,reg)			\
+	add	sum, sum, reg;		\
+	cmp.c	reg, sum;		\
+	bleu	9f;			\
+	addi	sum, 0x1;		\
+9:
+
+#define CSUM_BIGCHUNK(src, offset, sum)		\
+	lw	r8, [src, offset + 0x00];	\
+	lw	r9, [src, offset + 0x04];	\
+	lw	r10, [src, offset + 0x08];	\
+	lw	r11, [src, offset + 0x0c];	\
+	ADDC(sum, r8);				\
+	ADDC(sum, r9);				\
+	ADDC(sum, r10);				\
+	ADDC(sum, r11);				\
+	lw	r8, [src, offset + 0x10];	\
+	lw	r9, [src, offset + 0x14];	\
+	lw	r10, [src, offset + 0x18]; 	\
+	lw	r11, [src, offset + 0x1c]; 	\
+	ADDC(sum, r8);				\
+	ADDC(sum, r9);				\
+	ADDC(sum, r10);				\
+	ADDC(sum, r11);				\
+
+#define src r4
+#define dest r5
+#define sum r27
+
+	.text
+/* unknown src alignment and < 8 bytes to go */
+small_csumcpy:
+	mv	r5, r10
+	ldi	r9, 0x0
+	cmpi.c	r25, 0x1
+	beq pass_small_set_t7	/*already set, jump to pass_small_set_t7*/
+	andri.c	r25,r4 , 0x1	/*Is src 2 bytes aligned?*/
+
+pass_small_set_t7:
+	beq	aligned
+	cmpi.c	r5, 0x0
+	beq	fold
+	lbu	r9, [src]
+	slli	r9,r9, 0x8	/*Little endian*/
+	ADDC(sum, r9)
+	addi	src, 0x1
+	subi.c	r5, 0x1
+
+	/*len still a full word */
+aligned:
+	andri.c r8, r5, 0x4	/*Len >= 4?*/
+	beq	len_less_4bytes
+
+	/* Still a full word (4byte) to go,and the src is word aligned.*/
+	andri.c	r8, src, 0x3	/*src is 4bytes aligned, so use LW!!*/
+	beq	four_byte_aligned
+	lhu 	r9, [src]
+	addi	src, 2
+	ADDC(sum, r9)
+	lhu 	r9, [src]
+	addi	src, 2
+	ADDC(sum, r9)
+	b len_less_4bytes
+
+four_byte_aligned:		/* Len >=4 and four byte aligned */
+	lw	r9, [src]
+	addi	src, 4
+	ADDC(sum, r9)
+
+len_less_4bytes:		/* 2 byte aligned aligned and length<4B */
+	andri.c r8, r5, 0x2
+	beq	len_less_2bytes
+	lhu	r9, [src]
+	addi	src, 0x2	/* src+=2 */
+	ADDC(sum, r9)
+
+len_less_2bytes:		/* len = 1 */
+	andri.c r8, r5, 0x1
+	beq 	fold		/* less than 2 and not equal 1--> len=0 -> fold */
+	lbu	r9, [src]
+
+fold_ADDC:
+	ADDC(sum, r9)
+fold:
+	/* fold checksum */
+	slli	r26, sum, 16
+	add	sum, sum, r26
+	cmp.c	r26, sum
+	srli	sum, sum, 16
+	bleu 	1f 		/* if r26<=sum */
+	addi	sum, 0x1 	/* r26>sum */
+1:
+	/* odd buffer alignment? r25 was set in csum_partial */
+	cmpi.c	r25, 0x0
+	beq	1f
+	slli	r26, sum, 8
+	srli	sum, sum, 8
+	or	sum, sum, r26
+	andi	sum, 0xffff
+1:
+	.set	optimize
+	/* Add the passed partial csum. */
+	ADDC(sum, r6)
+	mv	r4, sum
+	br	r3
+	.set	volatile
+
+	.align	5
+ENTRY(csum_partial)
+	ldi sum, 0
+	ldi r25, 0
+	mv r10, r5
+	cmpi.c	r5, 0x8
+	blt	small_csumcpy		/* < 8(singed) bytes to copy */
+	cmpi.c	r5, 0x0
+	beq	out
+	andri.c	r25, src, 0x1		/* odd buffer? */
+
+	beq	word_align
+hword_align:				/* 1 byte */
+	lbu	r8, [src]
+	subi	r5, 0x1
+	slli	r8, r8, 8
+	ADDC(sum, r8)
+	addi	src, 0x1
+
+word_align:				/* 2 bytes */
+	andri.c r8, src, 0x2		/* 4bytes(dword)_aligned? */
+	beq	dword_align		/* not, maybe dword_align */
+	lhu	r8, [src]
+	subi	r5, 0x2
+	ADDC(sum, r8)
+	addi	src, 0x2
+
+dword_align:				/* 4bytes */
+	mv 	r26, r5			/* maybe useless when len >=56 */
+	ldi 	r8, 56
+	cmp.c	r8, r5
+	bgtu	do_end_words		/* if a1(len)<t0(56) ,unsigned */
+	andri.c	r26, src, 0x4
+	beq	qword_align
+	lw	r8, [src]
+	subi	r5, 0x4
+	ADDC(sum, r8)
+	addi	src, 0x4
+
+qword_align:				/* 8 bytes */
+	andri.c r26, src, 0x8
+	beq	oword_align
+	lw	r8, [src, 0x0]
+	lw	r9, [src, 0x4]
+	subi	r5, 0x8			/* len-=0x8 */
+	ADDC(sum, r8)
+	ADDC(sum, r9)
+	addi	src, 0x8
+
+oword_align:				/* 16bytes */
+	andri.c	r26, src, 0x10
+	beq	begin_movement
+	lw	r10, [src, 0x08]
+	lw	r11, [src, 0x0c]
+	lw	r8, [src, 0x00]
+	lw	r9, [src, 0x04]
+	ADDC(sum, r10)
+	ADDC(sum, r11)
+	ADDC(sum, r8)
+	ADDC(sum, r9)
+	subi	r5, 0x10
+	addi	src, 0x10
+
+begin_movement:
+	srli.c	r26, r5, 0x7		/* len>=128? */
+	beq	1f			/* len<128 */
+
+/* r26 is the result that computed in oword_align */
+move_128bytes:
+	CSUM_BIGCHUNK(src, 0x00, sum)
+	CSUM_BIGCHUNK(src, 0x20, sum)
+	CSUM_BIGCHUNK(src, 0x40, sum)
+	CSUM_BIGCHUNK(src, 0x60, sum)
+	subi.c	r26, 0x01		/* r26 equals len/128 */
+	addi	src, 0x80
+	bne	move_128bytes
+
+1:	/* len<128,we process 64byte here */
+	andri.c	r10, r5, 0x40
+	beq	1f
+
+move_64bytes:
+	CSUM_BIGCHUNK(src, 0x00, sum)
+	CSUM_BIGCHUNK(src, 0x20, sum)
+	addi	src, 0x40
+
+1:					/* len<64 */
+	andri	r26, r5, 0x1c		/* 0x1c=28 */
+	andri.c	r10, r5, 0x20
+	beq	do_end_words		/* decided by andri */
+
+move_32bytes:
+	CSUM_BIGCHUNK(src, 0x00, sum)
+	andri	r26, r5, 0x1c
+	addri	src, src, 0x20
+
+do_end_words:				/* len<32 */
+	/* r26 was set already in dword_align */
+	cmpi.c	r26, 0x0
+	beq	maybe_end_cruft		/* len<28 or len<56 */
+	srli	r26, r26, 0x2
+
+end_words:
+	lw	r8, [src]
+	subi.c	r26, 0x1		/* unit is 4 byte */
+	ADDC(sum, r8)
+	addi	src, 0x4
+	cmpi.c	r26, 0x0
+	bne	end_words		/* r26!=0 */
+
+maybe_end_cruft:			/* len<4 */
+	andri	r10, r5, 0x3
+
+small_memcpy:
+	mv	r5, r10
+	j	small_csumcpy
+
+out:
+	mv	r4, sum
+	br	r3
+
+END(csum_partial)
diff --git a/arch/score/lib/checksum_copy.c b/arch/score/lib/checksum_copy.c
new file mode 100644
index 0000000..04565dd
--- /dev/null
+++ b/arch/score/lib/checksum_copy.c
@@ -0,0 +1,52 @@
+/*
+ * arch/score/lib/csum_partial_copy.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <net/checksum.h>
+
+#include <asm/uaccess.h>
+
+unsigned int csum_partial_copy(const char *src, char *dst,
+				int len, unsigned int sum)
+{
+	sum = csum_partial(src, len, sum);
+	memcpy(dst, src, len);
+
+	return sum;
+}
+
+unsigned int csum_partial_copy_from_user(const char *src, char *dst,
+					int len, unsigned int sum,
+					int *err_ptr)
+{
+	int missing;
+
+	missing = copy_from_user(dst, src, len);
+	if (missing) {
+		memset(dst + len - missing, 0, missing);
+		*err_ptr = -EFAULT;
+	}
+
+	return csum_partial(dst, len, sum);
+}
diff --git a/arch/score/lib/cmpdi2.c b/arch/score/lib/cmpdi2.c
new file mode 100644
index 0000000..1ed5290
--- /dev/null
+++ b/arch/score/lib/cmpdi2.c
@@ -0,0 +1,44 @@
+/*
+ * arch/score/lib/cmpdi2.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __cmpdi2(long long a, long long b)
+{
+	const DWunion au = {
+		.ll = a
+	};
+	const DWunion bu = {
+		.ll = b
+	};
+
+	if (au.s.high < bu.s.high)
+		return 0;
+	else if (au.s.high > bu.s.high)
+		return 2;
+
+	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+		return 0;
+	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+		return 2;
+
+	return 1;
+}
+EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/score/lib/libgcc.h b/arch/score/lib/libgcc.h
new file mode 100644
index 0000000..0f12543
--- /dev/null
+++ b/arch/score/lib/libgcc.h
@@ -0,0 +1,37 @@
+/*
+ * arch/score/lib/libgcc.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#ifndef __ASM_LIBGCC_H
+#define __ASM_LIBGCC_H
+
+#include <asm/byteorder.h>
+
+typedef int word_type __attribute__((mode(__word__)));
+
+struct DWstruct {
+	int low, high;
+};
+
+typedef union {
+	struct DWstruct s;
+	long long ll;
+} DWunion;
+
+#endif /* __ASM_LIBGCC_H */
diff --git a/arch/score/lib/lshrdi3.c b/arch/score/lib/lshrdi3.c
new file mode 100644
index 0000000..ce21175
--- /dev/null
+++ b/arch/score/lib/lshrdi3.c
@@ -0,0 +1,47 @@
+/*
+ * arch/score/lib/lshrdi3.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __lshrdi3(long long u, word_type b)
+{
+	DWunion uu, w;
+	word_type bm;
+
+	if (b == 0)
+		return u;
+
+	uu.ll = u;
+	bm = 32 - b;
+
+	if (bm <= 0) {
+		w.s.high = 0;
+		w.s.low = (unsigned int) uu.s.high >> -bm;
+	} else {
+		const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+		w.s.high = (unsigned int) uu.s.high >> b;
+		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+	}
+
+	return w.ll;
+}
+EXPORT_SYMBOL(__lshrdi3);
diff --git a/arch/score/lib/string.S b/arch/score/lib/string.S
new file mode 100644
index 0000000..943d091
--- /dev/null
+++ b/arch/score/lib/string.S
@@ -0,0 +1,196 @@
+/*
+ * arch/score/lib/string.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/linkage.h>
+#include <asm-generic/errno.h>
+
+	.text
+	.align 2
+ENTRY(__strncpy_from_user)
+	cmpi.c	r6, 0
+	mv	r9, r6
+	ble	.L2
+0:	lbu	r7, [r5]
+	ldi	r8, 0
+1:	sb	r7, [r4]
+2:	lb	r6, [r5]
+	cmp.c	r6, r8
+	beq	.L2
+
+.L5:
+	addi	r8, 1
+	cmp.c	r8, r9
+	beq	.L7
+3:	lbu	r6, [r5, 1]+
+4:	sb	r6, [r4, 1]+
+5:	lb	r7, [r5]
+	cmpi.c	r7, 0
+	bne	.L5
+.L7:
+	mv	r4, r8
+	br	r3
+.L2:
+	ldi	r8, 0
+	mv	r4, r8
+	br	r3
+	.section .fixup, "ax"
+99:
+	ldi	r4, -EFAULT
+	br	r3
+	.previous
+	.section __ex_table, "a"
+	.align	2
+	.word	0b ,99b
+	.word	1b ,99b
+	.word	2b ,99b
+	.word	3b ,99b
+	.word	4b ,99b
+	.word	5b ,99b
+	.previous
+
+	.align 2
+ENTRY(__strnlen_user)
+	cmpi.c	r5, 0
+	ble	.L11
+0:	lb	r6, [r4]
+	ldi	r7, 0
+	cmp.c	r6, r7
+	beq	.L11
+.L15:
+	addi	r7, 1
+	cmp.c	r7, r5
+	beq	.L23
+1:	lb	r6, [r4,1]+
+	cmpi.c	r6, 0
+	bne	.L15
+.L23:
+	addri	r4, r7, 1
+	br	r3
+
+.L11:
+	ldi	r4, 1
+	br	r3
+	.section .fixup, "ax"
+99:
+	ldi	r4, 0
+	br	r3
+
+	.section __ex_table,"a"
+	.align 2
+	.word	0b, 99b
+	.word	1b, 99b
+	.previous
+
+	.align 2
+ENTRY(__strlen_user)
+0:	lb	r6, [r4]
+	mv	r7, r4
+	extsb	r6, r6
+	cmpi.c	r6, 0
+	mv	r4, r6
+	beq	.L27
+.L28:
+1:	lb	r6, [r7, 1]+
+	addi	r6, 1
+	cmpi.c	r6, 0
+	bne	.L28
+.L27:
+	br	r3
+	.section .fixup, "ax"
+	ldi	r4, 0x0
+	br	r3
+99:
+	ldi	r4, 0
+	br	r3
+	.previous
+	.section __ex_table, "a"
+	.align	2
+	.word	0b ,99b
+	.word	1b ,99b
+	.previous
+
+	.align 2
+ENTRY(__copy_tofrom_user)
+	cmpi.c	r6, 0
+	mv	r10,r6
+	beq	.L32
+	ldi	r9, 0
+.L34:
+	add	r6, r5, r9
+0:	lbu	r8, [r6]
+	add	r7, r4, r9
+1:	sb	r8, [r7]
+	addi	r9, 1
+	cmp.c	r9, r10
+	bne	.L34
+.L32:
+	ldi	r4, 0
+	br	r3
+	.section .fixup, "ax"
+99:
+	sub	r4, r10, r9
+	br	r3
+	.previous
+	.section __ex_table, "a"
+	.align	2
+	.word	0b, 99b
+	.word	1b, 99b
+	.previous
+
+	.align 2
+ENTRY(__clear_user)
+	cmpi.c	r5, 0
+	beq	.L38
+	ldi	r6, 0
+	mv	r7, r6
+.L40:
+	addi	r6, 1
+0:	sb	r7, [r4]+, 1
+	cmp.c	r6, r5
+	bne	.L40
+.L38:
+	ldi	r4, 0
+	br	r3
+
+	.section .fixup, "ax"
+	br	r3
+	.previous
+	.section __ex_table, "a"
+	.align	2
+99:
+	.word	0b, 99b
+	.previous
+
+	.align	2
+ENTRY(__put_user_unknown)
+	.set volatile
+	ldi	r4, -EFAULT
+	br	r3
+
+	.align	2
+ENTRY(__get_user_unknown)
+	ldi	r5, 0
+	ldi	r4, -EFAULT
+	br	r3
diff --git a/arch/score/lib/ucmpdi2.c b/arch/score/lib/ucmpdi2.c
new file mode 100644
index 0000000..b15241e
--- /dev/null
+++ b/arch/score/lib/ucmpdi2.c
@@ -0,0 +1,38 @@
+/*
+ * arch/score/lib/ucmpdi2.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+	const DWunion au = {.ll = a};
+	const DWunion bu = {.ll = b};
+
+	if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
+		return 0;
+	else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
+		return 2;
+	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+		return 0;
+	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+		return 2;
+	return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);
diff --git a/arch/score/mm/Makefile b/arch/score/mm/Makefile
new file mode 100644
index 0000000..7b1e29b
--- /dev/null
+++ b/arch/score/mm/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for the Linux/SCORE-specific parts of the memory manager.
+#
+
+obj-y += cache.o extable.o fault.o init.o \
+	tlb-miss.o tlb-score.o pgtable.o
diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c
new file mode 100644
index 0000000..1ebc67f
--- /dev/null
+++ b/arch/score/mm/cache.c
@@ -0,0 +1,308 @@
+/*
+ * arch/score/mm/cache.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include <asm/mmu_context.h>
+
+/* Cache operations. */
+void (*flush_cache_all)(void);
+void (*__flush_cache_all)(void);
+void (*flush_cache_mm)(struct mm_struct *mm);
+void (*flush_cache_range)(struct vm_area_struct *vma,
+			unsigned long start, unsigned long end);
+void (*flush_cache_page)(struct vm_area_struct *vma,
+			unsigned long page, unsigned long pfn);
+void (*flush_icache_range)(unsigned long start, unsigned long end);
+void (*__flush_cache_vmap)(void);
+void (*__flush_cache_vunmap)(void);
+void (*flush_cache_sigtramp)(unsigned long addr);
+void (*flush_data_cache_page)(unsigned long addr);
+EXPORT_SYMBOL(flush_data_cache_page);
+void (*flush_icache_all)(void);
+
+/*Score 7 cache operations*/
+static inline void s7___flush_cache_all(void);
+static void s7_flush_cache_mm(struct mm_struct *mm);
+static void s7_flush_cache_range(struct vm_area_struct *vma,
+				unsigned long start, unsigned long end);
+static void s7_flush_cache_page(struct vm_area_struct *vma,
+				unsigned long page, unsigned long pfn);
+static void s7_flush_icache_range(unsigned long start, unsigned long end);
+static void s7_flush_cache_sigtramp(unsigned long addr);
+static void s7_flush_data_cache_page(unsigned long addr);
+static void s7_flush_dcache_range(unsigned long start, unsigned long end);
+
+void __update_cache(struct vm_area_struct *vma, unsigned long address,
+		pte_t pte)
+{
+	struct page *page;
+	unsigned long pfn, addr;
+	int exec = (vma->vm_flags & VM_EXEC);
+
+	pfn = pte_pfn(pte);
+	if (unlikely(!pfn_valid(pfn)))
+		return;
+	page = pfn_to_page(pfn);
+	if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {
+		addr = (unsigned long) page_address(page);
+		if (exec)
+			s7_flush_data_cache_page(addr);
+		clear_bit(PG_arch_1, &page->flags);
+	}
+}
+
+static inline void setup_protection_map(void)
+{
+	protection_map[0] = PAGE_NONE;
+	protection_map[1] = PAGE_READONLY;
+	protection_map[2] = PAGE_COPY;
+	protection_map[3] = PAGE_COPY;
+	protection_map[4] = PAGE_READONLY;
+	protection_map[5] = PAGE_READONLY;
+	protection_map[6] = PAGE_COPY;
+	protection_map[7] = PAGE_COPY;
+	protection_map[8] = PAGE_NONE;
+	protection_map[9] = PAGE_READONLY;
+	protection_map[10] = PAGE_SHARED;
+	protection_map[11] = PAGE_SHARED;
+	protection_map[12] = PAGE_READONLY;
+	protection_map[13] = PAGE_READONLY;
+	protection_map[14] = PAGE_SHARED;
+	protection_map[15] = PAGE_SHARED;
+}
+
+void __devinit cpu_cache_init(void)
+{
+	flush_cache_all = s7_flush_cache_all;
+	__flush_cache_all = s7___flush_cache_all;
+	flush_cache_mm = s7_flush_cache_mm;
+	flush_cache_range = s7_flush_cache_range;
+	flush_cache_page = s7_flush_cache_page;
+	flush_icache_range = s7_flush_icache_range;
+	flush_cache_sigtramp = s7_flush_cache_sigtramp;
+	flush_data_cache_page = s7_flush_data_cache_page;
+
+	setup_protection_map();
+}
+
+void s7_flush_icache_all(void)
+{
+	__asm__ __volatile__(
+	"la r8, s7_flush_icache_all\n"
+	"cache 0x10, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	: : : "r8");
+}
+
+void s7_flush_dcache_all(void)
+{
+	__asm__ __volatile__(
+	"la r8, s7_flush_dcache_all\n"
+	"cache 0x1f, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	"cache 0x1a, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	: : : "r8");
+}
+
+void s7_flush_cache_all(void)
+{
+	__asm__ __volatile__(
+	"la r8, s7_flush_cache_all\n"
+	"cache 0x10, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	"cache 0x1f, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	"cache 0x1a, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	: : : "r8");
+}
+
+void s7___flush_cache_all(void)
+{
+	__asm__ __volatile__(
+	"la r8, s7_flush_cache_all\n"
+	"cache 0x10, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	"cache 0x1f, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	"cache 0x1a, [r8, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	: : : "r8");
+}
+
+static void s7_flush_cache_mm(struct mm_struct *mm)
+{
+	if (!(mm->context))
+		return;
+	s7_flush_cache_all();
+}
+
+/*if we flush a range precisely , the processing may be very long.
+We must check each page in the range whether present. If the page is present,
+we can flush the range in the page. Be careful, the range may be cross two
+page, a page is present and another is not present.
+*/
+/*
+The interface is provided in hopes that the port can find
+a suitably efficient method for removing multiple page
+sized regions from the cache.
+*/
+static void
+s7_flush_cache_range(struct vm_area_struct *vma,
+		unsigned long start, unsigned long end)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	int exec = vma->vm_flags & VM_EXEC;
+	pgd_t *pgdp;
+	pud_t *pudp;
+	pmd_t *pmdp;
+	pte_t *ptep;
+
+	if (!(mm->context))
+		return;
+
+	pgdp = pgd_offset(mm, start);
+	pudp = pud_offset(pgdp, start);
+	pmdp = pmd_offset(pudp, start);
+	ptep = pte_offset(pmdp, start);
+
+	while (start <= end) {
+		unsigned long tmpend;
+		pgdp = pgd_offset(mm, start);
+		pudp = pud_offset(pgdp, start);
+		pmdp = pmd_offset(pudp, start);
+		ptep = pte_offset(pmdp, start);
+
+		if (!(pte_val(*ptep) & _PAGE_PRESENT)) {
+			start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
+			continue;
+		}
+		tmpend = (start | (PAGE_SIZE-1)) > end ?
+				 end : (start | (PAGE_SIZE-1));
+
+		s7_flush_dcache_range(start, tmpend);
+		if (exec)
+			s7_flush_icache_range(start, tmpend);
+		start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
+	}
+}
+
+static void
+s7_flush_cache_page(struct vm_area_struct *vma,
+		unsigned long addr, unsigned long pfn)
+{
+	int exec = vma->vm_flags & VM_EXEC;
+	unsigned long kaddr = 0xa0000000 | (pfn << PAGE_SHIFT);
+
+	s7_flush_dcache_range(kaddr, kaddr + PAGE_SIZE);
+
+	if (exec)
+		s7_flush_icache_range(kaddr, kaddr + PAGE_SIZE);
+}
+
+static void s7_flush_cache_sigtramp(unsigned long addr)
+{
+	__asm__ __volatile__(
+	"cache 0x02, [%0, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\n"
+	"cache 0x02, [%0, 0x4]\n"
+	"nop\nnop\nnop\nnop\nnop\n"
+
+	"cache 0x0d, [%0, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\n"
+	"cache 0x0d, [%0, 0x4]\n"
+	"nop\nnop\nnop\nnop\nnop\n"
+
+	"cache 0x1a, [%0, 0]\n"
+	"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (addr));
+}
+
+/*
+Just flush entire Dcache!!
+You must ensure the page doesn't include instructions, because
+the function will not flush the Icache.
+The addr must be cache aligned.
+*/
+static void s7_flush_data_cache_page(unsigned long addr)
+{
+	unsigned int i;
+	for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) {
+		__asm__ __volatile__(
+		"cache 0x0e, [%0, 0]\n"
+		"cache 0x1a, [%0, 0]\n"
+		"nop\n"
+		: : "r" (addr));
+		addr += L1_CACHE_BYTES;
+	}
+}
+
+/*
+1. WB and invalid a cache line of Dcache
+2. Drain Write Buffer
+the range must be smaller than PAGE_SIZE
+*/
+static void s7_flush_dcache_range(unsigned long start, unsigned long end)
+{
+	int size, i;
+
+	start = start & ~(L1_CACHE_BYTES - 1);
+	end = end & ~(L1_CACHE_BYTES - 1);
+	size = end - start;
+	/* flush dcache to ram, and invalidate dcache lines. */
+	for (i = 0; i < size; i += L1_CACHE_BYTES) {
+		__asm__ __volatile__(
+		"cache 0x0e, [%0, 0]\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		"cache 0x1a, [%0, 0]\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		: : "r" (start));
+		start += L1_CACHE_BYTES;
+	}
+}
+
+static void s7_flush_icache_range(unsigned long start, unsigned long end)
+{
+	int size, i;
+	start = start & ~(L1_CACHE_BYTES - 1);
+	end = end & ~(L1_CACHE_BYTES - 1);
+
+	size = end - start;
+	/* invalidate icache lines. */
+	for (i = 0; i < size; i += L1_CACHE_BYTES) {
+		__asm__ __volatile__(
+		"cache 0x02, [%0, 0]\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		: : "r" (start));
+		start += L1_CACHE_BYTES;
+	}
+}
diff --git a/arch/score/mm/extable.c b/arch/score/mm/extable.c
new file mode 100644
index 0000000..01ff644
--- /dev/null
+++ b/arch/score/mm/extable.c
@@ -0,0 +1,38 @@
+/*
+ * arch/score/mm/extable.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+
+int fixup_exception(struct pt_regs *regs)
+{
+	const struct exception_table_entry *fixup;
+
+	fixup = search_exception_tables(regs->cp0_epc);
+	if (fixup) {
+		regs->cp0_epc = fixup->fixup;
+		return 1;
+	}
+	return 0;
+}
diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c
new file mode 100644
index 0000000..47b600e
--- /dev/null
+++ b/arch/score/mm/fault.c
@@ -0,0 +1,235 @@
+/*
+ * arch/score/mm/fault.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+
+/*
+ * This routine handles page faults.  It determines the address,
+ * and the problem, and then passes it off to one of the appropriate
+ * routines.
+ */
+asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
+				unsigned long address)
+{
+	struct vm_area_struct *vma = NULL;
+	struct task_struct *tsk = current;
+	struct mm_struct *mm = tsk->mm;
+	const int field = sizeof(unsigned long) * 2;
+	siginfo_t info;
+	int fault;
+
+	info.si_code = SEGV_MAPERR;
+
+	/*
+	* We fault-in kernel-space virtual memory on-demand. The
+	* 'reference' page table is init_mm.pgd.
+	*
+	* NOTE! We MUST NOT take any locks for this case. We may
+	* be in an interrupt or a critical region, and should
+	* only copy the information from the master page table,
+	* nothing more.
+	*/
+	if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
+		goto vmalloc_fault;
+#ifdef MODULE_START
+	if (unlikely(address >= MODULE_START && address < MODULE_END))
+		goto vmalloc_fault;
+#endif
+
+	/*
+	* If we're in an interrupt or have no user
+	* context, we must not take the fault..
+	*/
+	if (in_atomic() || !mm)
+		goto bad_area_nosemaphore;
+
+	down_read(&mm->mmap_sem);
+	vma = find_vma(mm, address);
+	if (!vma)
+		goto bad_area;
+	if (vma->vm_start <= address)
+		goto good_area;
+	if (!(vma->vm_flags & VM_GROWSDOWN))
+		goto bad_area;
+	if (expand_stack(vma, address))
+		goto bad_area;
+	/*
+	* Ok, we have a good vm_area for this memory access, so
+	* we can handle it..
+	 */
+good_area:
+	info.si_code = SEGV_ACCERR;
+
+	if (write) {
+		if (!(vma->vm_flags & VM_WRITE))
+			goto bad_area;
+	} else {
+		if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
+			goto bad_area;
+	}
+
+survive:
+	/*
+	* If for any reason at all we couldn't handle the fault,
+	* make sure we exit gracefully rather than endlessly redo
+	* the fault.
+	*/
+	fault = handle_mm_fault(mm, vma, address, write);
+	if (unlikely(fault & VM_FAULT_ERROR)) {
+		if (fault & VM_FAULT_OOM)
+			goto out_of_memory;
+		else if (fault & VM_FAULT_SIGBUS)
+			goto do_sigbus;
+		BUG();
+	}
+	if (fault & VM_FAULT_MAJOR)
+		tsk->maj_flt++;
+	else
+		tsk->min_flt++;
+
+	up_read(&mm->mmap_sem);
+	return;
+
+	/*
+	* Something tried to access memory that isn't in our memory map..
+	* Fix it, but check if it's kernel or user first..
+	 */
+bad_area:
+	up_read(&mm->mmap_sem);
+
+bad_area_nosemaphore:
+	/* User mode accesses just cause a SIGSEGV */
+	if (user_mode(regs)) {
+		tsk->thread.cp0_badvaddr = address;
+		tsk->thread.error_code = write;
+		info.si_signo = SIGSEGV;
+		info.si_errno = 0;
+		/* info.si_code has been set above */
+		info.si_addr = (void __user *) address;
+		force_sig_info(SIGSEGV, &info, tsk);
+		return;
+	}
+
+no_context:
+	/* Are we prepared to handle this kernel fault? */
+	if (fixup_exception(regs)) {
+		current->thread.cp0_baduaddr = address;
+		return;
+	}
+
+	/*
+	* Oops. The kernel tried to access some bad page. We'll have to
+	* terminate things with extreme prejudice.
+	*/
+	bust_spinlocks(1);
+
+	printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
+			"virtual address %0*lx, epc == %0*lx, ra == %0*lx\n",
+			0, field, address, field, regs->cp0_epc,
+			field, regs->regs[3]);
+	die("Oops", regs);
+
+	/*
+	* We ran out of memory, or some other thing happened to us that made
+	* us unable to handle the page fault gracefully.
+	*/
+out_of_memory:
+	up_read(&mm->mmap_sem);
+	if (is_global_init(tsk)) {
+		yield();
+		down_read(&mm->mmap_sem);
+		goto survive;
+	}
+	printk("VM: killing process %s\n", tsk->comm);
+	if (user_mode(regs))
+		do_group_exit(SIGKILL);
+	goto no_context;
+
+do_sigbus:
+	up_read(&mm->mmap_sem);
+	/* Kernel mode? Handle exceptions or die */
+	if (!user_mode(regs))
+		goto no_context;
+	else
+	/*
+	* Send a sigbus, regardless of whether we were in kernel
+	* or user mode.
+	*/
+	tsk->thread.cp0_badvaddr = address;
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_ADRERR;
+	info.si_addr = (void __user *) address;
+	force_sig_info(SIGBUS, &info, tsk);
+	return;
+vmalloc_fault:
+	{
+		/*
+		* Synchronize this task's top level page-table
+		* with the 'reference' page table.
+		*
+		* Do _not_ use "tsk" here. We might be inside
+		* an interrupt in the middle of a task switch..
+		*/
+		int offset = __pgd_offset(address);
+		pgd_t *pgd, *pgd_k;
+		pud_t *pud, *pud_k;
+		pmd_t *pmd, *pmd_k;
+		pte_t *pte_k;
+
+		pgd = (pgd_t *) pgd_current + offset;
+		pgd_k = init_mm.pgd + offset;
+
+		if (!pgd_present(*pgd_k))
+			goto no_context;
+		set_pgd(pgd, *pgd_k);
+
+		pud = pud_offset(pgd, address);
+		pud_k = pud_offset(pgd_k, address);
+		if (!pud_present(*pud_k))
+			goto no_context;
+
+		pmd = pmd_offset(pud, address);
+		pmd_k = pmd_offset(pud_k, address);
+		if (!pmd_present(*pmd_k))
+			goto no_context;
+		set_pmd(pmd, *pmd_k);
+
+		pte_k = pte_offset_kernel(pmd_k, address);
+		if (!pte_present(*pte_k))
+			goto no_context;
+		return;
+	}
+}
diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c
new file mode 100644
index 0000000..7780eec
--- /dev/null
+++ b/arch/score/mm/init.c
@@ -0,0 +1,173 @@
+/*
+ * arch/score/mm/init.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/errno.h>
+#include <linux/bootmem.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/pagemap.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <asm-generic/sections.h>
+
+#include <asm/tlb.h>
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+/*
+ * We have up to 8 empty zeroed pages so we can map one of the right colour
+ * when needed.
+ */
+unsigned long zero_page_mask;
+unsigned long empty_zero_page;
+EXPORT_SYMBOL_GPL(empty_zero_page);
+
+static struct kcore_list kcore_mem, kcore_vmalloc;
+
+unsigned long setup_zero_pages(void)
+{
+	unsigned int order = 0;
+	unsigned long size;
+	struct page *page;
+
+	empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order);
+	if (!empty_zero_page)
+		panic("Oh boy, that early out of memory?");
+
+	page = virt_to_page((void *) empty_zero_page);
+	split_page(page, order);
+	while (page < virt_to_page((void *) (empty_zero_page +
+					     (PAGE_SIZE << order)))) {
+		SetPageReserved(page);
+		page++;
+	}
+
+	size = PAGE_SIZE << order;
+	zero_page_mask = (size - 1) & PAGE_MASK;
+
+	return 1UL << order;
+}
+
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+static int __init page_is_ram(unsigned long pagenr)
+{
+	if (pagenr >= min_low_pfn && pagenr < max_low_pfn)
+		return 1;
+	else
+		return 0;
+}
+
+void __init paging_init(void)
+{
+	unsigned long max_zone_pfns[MAX_NR_ZONES];
+	unsigned long lastpfn;
+
+	pagetable_init();
+	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+	lastpfn = max_low_pfn;
+	free_area_init_nodes(max_zone_pfns);
+}
+
+void __init mem_init(void)
+{
+	unsigned long codesize, reservedpages, datasize, initsize;
+	unsigned long tmp, ram = 0;
+
+	max_mapnr = max_low_pfn;
+	high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
+	totalram_pages += free_all_bootmem();
+	totalram_pages -= setup_zero_pages();	/* Setup zeroed pages. */
+	reservedpages = 0;
+
+	for (tmp = 0; tmp < max_low_pfn; tmp++)
+		if (page_is_ram(tmp)) {
+			ram++;
+			if (PageReserved(pfn_to_page(tmp)))
+				reservedpages++;
+		}
+
+	num_physpages = ram;
+	codesize = (unsigned long) &_etext - (unsigned long) &_text;
+	datasize = (unsigned long) &_edata - (unsigned long) &_etext;
+	initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
+
+	kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
+	kclist_add(&kcore_vmalloc, (void *) VMALLOC_START,
+			VMALLOC_END - VMALLOC_START);
+
+	printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
+			"%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
+			(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+			ram << (PAGE_SHIFT-10), codesize >> 10,
+			reservedpages << (PAGE_SHIFT-10), datasize >> 10,
+			initsize >> 10,
+			(unsigned long) (totalhigh_pages << (PAGE_SHIFT-10)));
+}
+#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+
+void free_init_pages(const char *what, unsigned long begin, unsigned long end)
+{
+	unsigned long pfn;
+
+	for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) {
+		struct page *page = pfn_to_page(pfn);
+		void *addr = phys_to_virt(PFN_PHYS(pfn));
+
+		ClearPageReserved(page);
+		init_page_count(page);
+		memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
+		__free_page(page);
+		totalram_pages++;
+	}
+	printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+void free_initrd_mem(unsigned long start, unsigned long end)
+{
+	free_init_pages("initrd memory",
+	virt_to_phys((void *) start),
+	virt_to_phys((void *) end));
+}
+#endif
+
+void __init_refok free_initmem(void)
+{
+	free_init_pages("unused kernel memory",
+	    (unsigned long)__init_begin, (unsigned long)__init_end);
+}
+
+unsigned long pgd_current;
+
+#define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order)))
+
+/*
+ * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER
+ * are constants.  So we use the variants from asm-offset.h until that gcc
+ * will officially be retired.
+ */
+pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER);
diff --git a/arch/score/mm/pgtable.c b/arch/score/mm/pgtable.c
new file mode 100644
index 0000000..10b0962
--- /dev/null
+++ b/arch/score/mm/pgtable.c
@@ -0,0 +1,60 @@
+/*
+ * arch/score/mm/pgtable-32.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/bootmem.h>
+#include <linux/init.h>
+#include <linux/pfn.h>
+#include <linux/mm.h>
+
+void pgd_init(unsigned long page)
+{
+	unsigned long *p = (unsigned long *) page;
+	int i;
+
+	for (i = 0; i < USER_PTRS_PER_PGD; i += 8) {
+		p[i + 0] = (unsigned long) invalid_pte_table;
+		p[i + 1] = (unsigned long) invalid_pte_table;
+		p[i + 2] = (unsigned long) invalid_pte_table;
+		p[i + 3] = (unsigned long) invalid_pte_table;
+		p[i + 4] = (unsigned long) invalid_pte_table;
+		p[i + 5] = (unsigned long) invalid_pte_table;
+		p[i + 6] = (unsigned long) invalid_pte_table;
+		p[i + 7] = (unsigned long) invalid_pte_table;
+	}
+}
+
+void __init pagetable_init(void)
+{
+	unsigned long vaddr;
+	pgd_t *pgd_base;
+
+	/* Initialize the entire pgd. */
+	pgd_init((unsigned long) swapper_pg_dir);
+	pgd_init((unsigned long) swapper_pg_dir
+		+ sizeof(pgd_t) * USER_PTRS_PER_PGD);
+
+	pgd_base = swapper_pg_dir;
+	vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
+}
diff --git a/arch/score/mm/tlb-miss.S b/arch/score/mm/tlb-miss.S
new file mode 100644
index 0000000..f276519
--- /dev/null
+++ b/arch/score/mm/tlb-miss.S
@@ -0,0 +1,199 @@
+/*
+ * arch/score/mm/tlbex.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/pgtable-bits.h>
+#include <asm/scoreregs.h>
+
+/*
+* After this macro runs, the pte faulted on is
+* in register PTE, a ptr into the table in which
+* the pte belongs is in PTR.
+*/
+	.macro	load_pte, pte, ptr
+	la	\ptr, pgd_current
+	lw	\ptr, [\ptr, 0]
+	mfcr	\pte, cr6
+	srli	\pte, \pte, 22
+	slli	\pte, \pte, 2
+	add	\ptr, \ptr, \pte
+	lw	\ptr, [\ptr, 0]
+	mfcr	\pte, cr6
+	srli	\pte, \pte, 10
+	andi	\pte, 0xffc
+	add	\ptr, \ptr, \pte
+	lw	\pte, [\ptr, 0]
+	.endm
+
+	.macro	pte_reload, ptr
+	lw	\ptr, [\ptr, 0]
+	mtcr	\ptr, cr12
+	nop
+	nop
+	nop
+	nop
+	nop
+	.endm
+
+	.macro do_fault, write
+	SAVE_ALL
+	mfcr	r6, cr6
+	mv	r4, r0
+	ldi	r5, \write
+	la	r8, do_page_fault
+	brl	r8
+	j	ret_from_exception
+	.endm
+
+	.macro	pte_writable, pte, ptr, label
+	andi	\pte, 0x280
+	cmpi.c	\pte, 0x280
+	bne	\label
+	lw	\pte, [\ptr, 0]		/*reload PTE*/
+	.endm
+
+/*
+ * Make PTE writable, update software status bits as well,
+ * then store at PTR.
+ */
+	.macro	pte_makewrite, pte, ptr
+	ori	\pte, 0x426
+	sw	\pte, [\ptr, 0]
+	.endm
+
+	.text
+ENTRY(score7_FTLB_refill_Handler)
+	la	r31, pgd_current	/* get pgd pointer */
+	lw	r31, [r31, 0]		/* get the address of PGD */
+	mfcr	r30, cr6
+	srli	r30, r30, 22		/* PGDIR_SHIFT = 22*/
+	slli	r30, r30, 2
+	add	r31, r31, r30
+	lw	r31, [r31, 0]		/* get the address of the start address of PTE table */
+
+	mfcr	r30, cr9
+	andi	r30, 0xfff 		/* equivalent to get PET index and right shift 2 bits */
+	add	r31, r31, r30
+	lw	r30, [r31, 0]		/* load pte entry */
+	mtcr	r30, cr12
+	nop
+	nop
+	nop
+	nop
+	nop
+	mtrtlb
+	nop
+	nop
+	nop
+	nop
+	nop
+	rte				/* 6 cycles to make sure tlb entry works */
+
+ENTRY(score7_KSEG_refill_Handler)
+	la	r31, pgd_current	/* get pgd pointer */
+	lw	r31, [r31, 0]		/* get the address of PGD */
+	mfcr	r30, cr6
+	srli	r30, r30, 22		/* PGDIR_SHIFT = 22 */
+	slli	r30, r30, 2
+	add	r31, r31, r30
+	lw	r31, [r31, 0]		/* get the address of the start address of PTE table */
+
+	mfcr	r30, cr6		/* get Bad VPN */
+	srli	r30, r30, 10
+	andi	r30, 0xffc		/* PTE VPN mask (bit 11~2) */
+
+	add	r31, r31, r30
+	lw	r30, [r31, 0]		/* load pte entry */
+	mtcr	r30, cr12
+	nop
+	nop
+	nop
+	nop
+	nop
+	mtrtlb
+	nop
+	nop
+	nop
+	nop
+	nop
+	rte				/* 6 cycles to make sure tlb entry works */
+
+nopage_tlbl:
+	do_fault	0		/* Read */
+
+ENTRY(handle_tlb_refill)
+	load_pte	r30, r31
+	pte_writable	r30, r31, handle_tlb_refill_nopage
+	pte_makewrite	r30, r31	/* Access|Modify|Dirty|Valid */
+	pte_reload	r31
+	mtrtlb
+	nop
+	nop
+	nop
+	nop
+	nop
+	rte
+handle_tlb_refill_nopage:
+	do_fault	0		/* Read */
+
+ENTRY(handle_tlb_invaild)
+	load_pte	r30, r31
+	stlb				/* find faulting entry */
+	pte_writable	r30, r31, handle_tlb_invaild_nopage
+	pte_makewrite	r30, r31	/* Access|Modify|Dirty|Valid */
+	pte_reload	r31
+	mtptlb
+	nop
+	nop
+	nop
+	nop
+	nop
+	rte
+handle_tlb_invaild_nopage:
+	do_fault	0		/* Read */
+
+ENTRY(handle_mod)
+	load_pte	r30, r31
+	stlb				/* find faulting entry */
+	andi	r30, _PAGE_WRITE	/* Writable? */
+	cmpz.c	r30
+	beq	nowrite_mod
+	lw	r30, [r31, 0]		/* reload into r30 */
+
+	/* Present and writable bits set, set accessed and dirty bits. */
+	pte_makewrite	r30, r31
+
+	/* Now reload the entry into the tlb. */
+	pte_reload	r31
+	mtptlb
+	nop
+	nop
+	nop
+	nop
+	nop
+	rte
+
+nowrite_mod:
+	do_fault	1	/* Write */
diff --git a/arch/score/mm/tlb-score.c b/arch/score/mm/tlb-score.c
new file mode 100644
index 0000000..4fa5aa5
--- /dev/null
+++ b/arch/score/mm/tlb-score.c
@@ -0,0 +1,251 @@
+/*
+ * arch/score/mm/tlb-score.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/highmem.h>
+#include <linux/module.h>
+
+#include <asm/irq.h>
+#include <asm/mmu_context.h>
+#include <asm/tlb.h>
+
+#define TLBSIZE 32
+
+unsigned long asid_cache = ASID_FIRST_VERSION;
+EXPORT_SYMBOL(asid_cache);
+
+void local_flush_tlb_all(void)
+{
+	unsigned long flags;
+	unsigned long old_ASID;
+	int entry;
+
+	local_irq_save(flags);
+	old_ASID = pevn_get() & ASID_MASK;
+	pectx_set(0);			/* invalid */
+	entry = tlblock_get();		/* skip locked entries*/
+
+	for (; entry < TLBSIZE; entry++) {
+		tlbpt_set(entry);
+		pevn_set(KSEG1);
+		barrier();
+		tlb_write_indexed();
+	}
+	pevn_set(old_ASID);
+	local_irq_restore(flags);
+}
+
+/*
+ * If mm is currently active_mm, we can't really drop it. Instead,
+ * we will get a new one for it.
+ */
+static inline void
+drop_mmu_context(struct mm_struct *mm)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	get_new_mmu_context(mm);
+	pevn_set(mm->context & ASID_MASK);
+	local_irq_restore(flags);
+}
+
+void local_flush_tlb_mm(struct mm_struct *mm)
+{
+	if (mm->context != 0)
+		drop_mmu_context(mm);
+}
+
+void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+	unsigned long end)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	unsigned long vma_mm_context = mm->context;
+	if (mm->context != 0) {
+		unsigned long flags;
+		int size;
+
+		local_irq_save(flags);
+		size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+		if (size <= TLBSIZE) {
+			int oldpid = pevn_get() & ASID_MASK;
+			int newpid = vma_mm_context & ASID_MASK;
+
+			start &= PAGE_MASK;
+			end += (PAGE_SIZE - 1);
+			end &= PAGE_MASK;
+			while (start < end) {
+				int idx;
+
+				pevn_set(start | newpid);
+				start += PAGE_SIZE;
+				barrier();
+				tlb_probe();
+				idx = tlbpt_get();
+				pectx_set(0);
+				pevn_set(KSEG1);
+				if (idx < 0)
+					continue;
+				tlb_write_indexed();
+			}
+			pevn_set(oldpid);
+		} else {
+			/* Bigger than TLBSIZE, get new ASID directly */
+			get_new_mmu_context(mm);
+			if (mm == current->active_mm)
+				pevn_set(vma_mm_context & ASID_MASK);
+		}
+		local_irq_restore(flags);
+	}
+}
+
+void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	unsigned long flags;
+	int size;
+
+	local_irq_save(flags);
+	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+	if (size <= TLBSIZE) {
+		int pid = pevn_get();
+
+		start &= PAGE_MASK;
+		end += PAGE_SIZE - 1;
+		end &= PAGE_MASK;
+
+		while (start < end) {
+			long idx;
+
+			pevn_set(start);
+			start += PAGE_SIZE;
+			tlb_probe();
+			idx = tlbpt_get();
+			if (idx < 0)
+				continue;
+			pectx_set(0);
+			pevn_set(KSEG1);
+			barrier();
+			tlb_write_indexed();
+		}
+		pevn_set(pid);
+	} else {
+		local_flush_tlb_all();
+	}
+
+	local_irq_restore(flags);
+}
+
+void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
+{
+	if (!vma || vma->vm_mm->context != 0) {
+		unsigned long flags;
+		int oldpid, newpid, idx;
+		unsigned long vma_ASID = vma->vm_mm->context;
+
+		newpid = vma_ASID & ASID_MASK;
+		page &= PAGE_MASK;
+		local_irq_save(flags);
+		oldpid = pevn_get() & ASID_MASK;
+		pevn_set(page | newpid);
+		barrier();
+		tlb_probe();
+		idx = tlbpt_get();
+		pectx_set(0);
+		pevn_set(KSEG1);
+		if (idx < 0)		/* p_bit(31) - 1: miss, 0: hit*/
+			goto finish;
+		barrier();
+		tlb_write_indexed();
+finish:
+		pevn_set(oldpid);
+		local_irq_restore(flags);
+	}
+}
+
+/*
+ * This one is only used for pages with the global bit set so we don't care
+ * much about the ASID.
+ */
+void local_flush_tlb_one(unsigned long page)
+{
+	unsigned long flags;
+	int oldpid, idx;
+
+	local_irq_save(flags);
+	oldpid = pevn_get();
+	page &= (PAGE_MASK << 1);
+	pevn_set(page);
+	barrier();
+	tlb_probe();
+	idx = tlbpt_get();
+	pectx_set(0);
+	if (idx >= 0) {
+		/* Make sure all entries differ. */
+		pevn_set(KSEG1);
+		barrier();
+		tlb_write_indexed();
+	}
+	pevn_set(oldpid);
+	local_irq_restore(flags);
+}
+
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+	unsigned long flags;
+	int idx, pid;
+
+	/*
+	 * Handle debugger faulting in for debugee.
+	 */
+	if (current->active_mm != vma->vm_mm)
+		return;
+
+	pid = pevn_get() & ASID_MASK;
+
+	local_irq_save(flags);
+	address &= PAGE_MASK;
+	pevn_set(address | pid);
+	barrier();
+	tlb_probe();
+	idx = tlbpt_get();
+	pectx_set(pte_val(pte));
+	pevn_set(address | pid);
+	if (idx < 0)
+		tlb_write_random();
+	else
+		tlb_write_indexed();
+
+	pevn_set(pid);
+	local_irq_restore(flags);
+}
+
+void __cpuinit tlb_init(void)
+{
+	tlblock_set(0);
+	local_flush_tlb_all();
+	memcpy((void *)(EXCEPTION_VECTOR_BASE_ADDR + 0x100),
+			&score7_FTLB_refill_Handler, 0xFC);
+	flush_icache_range(EXCEPTION_VECTOR_BASE_ADDR + 0x100,
+			EXCEPTION_VECTOR_BASE_ADDR + 0x1FC);
+}