| # SPDX-License-Identifier: GPL-2.0 |
| config SUPERH |
| def_bool y |
| select ARCH_HAS_CPU_FINALIZE_INIT |
| select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST |
| select ARCH_MIGHT_HAVE_PC_PARPORT |
| select ARCH_NO_COHERENT_DMA_MMAP if !MMU |
| select HAVE_PATA_PLATFORM |
| select CLKDEV_LOOKUP |
| select HAVE_IDE if HAS_IOPORT_MAP |
| select HAVE_MEMBLOCK |
| select HAVE_MEMBLOCK_NODE_MAP |
| select ARCH_DISCARD_MEMBLOCK |
| select HAVE_OPROFILE |
| select HAVE_GENERIC_DMA_COHERENT |
| select HAVE_ARCH_TRACEHOOK |
| select HAVE_DMA_API_DEBUG |
| select HAVE_PERF_EVENTS |
| select HAVE_DEBUG_BUGVERBOSE |
| select ARCH_HAVE_CUSTOM_GPIO_H |
| select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) |
| select ARCH_HAS_GCOV_PROFILE_ALL |
| select PERF_USE_VMALLOC |
| select HAVE_DEBUG_KMEMLEAK |
| select HAVE_KERNEL_GZIP |
| select CPU_NO_EFFICIENT_FFS |
| select HAVE_KERNEL_BZIP2 |
| select HAVE_KERNEL_LZMA |
| select HAVE_KERNEL_XZ |
| select HAVE_KERNEL_LZO |
| select HAVE_UID16 |
| select ARCH_WANT_IPC_PARSE_VERSION |
| select HAVE_SYSCALL_TRACEPOINTS |
| select HAVE_REGS_AND_STACK_ACCESS_API |
| select MAY_HAVE_SPARSE_IRQ |
| select IRQ_FORCED_THREADING |
| select RTC_LIB |
| select GENERIC_ATOMIC64 |
| select GENERIC_IRQ_SHOW |
| select GENERIC_SMP_IDLE_THREAD |
| select GENERIC_IDLE_POLL_SETUP |
| select GENERIC_CLOCKEVENTS |
| select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST |
| select GENERIC_SCHED_CLOCK |
| select GENERIC_STRNCPY_FROM_USER |
| select GENERIC_STRNLEN_USER |
| select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER |
| select MODULES_USE_ELF_RELA |
| select OLD_SIGSUSPEND |
| select OLD_SIGACTION |
| select HAVE_ARCH_AUDITSYSCALL |
| select HAVE_FUTEX_CMPXCHG if FUTEX |
| select HAVE_NMI |
| help |
| The SuperH is a RISC processor targeted for use in embedded systems |
| and consumer electronics; it was also used in the Sega Dreamcast |
| gaming console. The SuperH port has a home page at |
| <http://www.linux-sh.org/>. |
| |
| config SUPERH32 |
| def_bool ARCH = "sh" |
| select HAVE_KPROBES |
| select HAVE_KRETPROBES |
| select HAVE_IOREMAP_PROT if MMU && !X2TLB |
| select HAVE_FUNCTION_TRACER |
| select HAVE_FTRACE_MCOUNT_RECORD |
| select HAVE_DYNAMIC_FTRACE |
| select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE |
| select ARCH_WANT_IPC_PARSE_VERSION |
| select HAVE_FUNCTION_GRAPH_TRACER |
| select HAVE_ARCH_KGDB |
| select HAVE_HW_BREAKPOINT |
| select HAVE_MIXED_BREAKPOINTS_REGS |
| select PERF_EVENTS |
| select ARCH_HIBERNATION_POSSIBLE if MMU |
| select SPARSE_IRQ |
| select HAVE_CC_STACKPROTECTOR |
| |
| config SUPERH64 |
| def_bool ARCH = "sh64" |
| select HAVE_EXIT_THREAD |
| select KALLSYMS |
| |
| config ARCH_DEFCONFIG |
| string |
| default "arch/sh/configs/shx3_defconfig" if SUPERH32 |
| default "arch/sh/configs/cayman_defconfig" if SUPERH64 |
| |
| config RWSEM_GENERIC_SPINLOCK |
| def_bool y |
| |
| config RWSEM_XCHGADD_ALGORITHM |
| bool |
| |
| config GENERIC_BUG |
| def_bool y |
| depends on BUG && SUPERH32 |
| |
| config GENERIC_CSUM |
| def_bool y |
| depends on SUPERH64 |
| |
| config GENERIC_HWEIGHT |
| def_bool y |
| |
| config GENERIC_CALIBRATE_DELAY |
| bool |
| |
| config GENERIC_LOCKBREAK |
| def_bool y |
| depends on SMP && PREEMPT |
| |
| config ARCH_SUSPEND_POSSIBLE |
| def_bool n |
| |
| config ARCH_HIBERNATION_POSSIBLE |
| def_bool n |
| |
| config SYS_SUPPORTS_APM_EMULATION |
| bool |
| select ARCH_SUSPEND_POSSIBLE |
| |
| config SYS_SUPPORTS_HUGETLBFS |
| bool |
| |
| config SYS_SUPPORTS_SMP |
| bool |
| |
| config SYS_SUPPORTS_NUMA |
| bool |
| |
| config SYS_SUPPORTS_PCI |
| bool |
| |
| config STACKTRACE_SUPPORT |
| def_bool y |
| |
| config LOCKDEP_SUPPORT |
| def_bool y |
| |
| config ARCH_HAS_ILOG2_U32 |
| def_bool n |
| |
| config ARCH_HAS_ILOG2_U64 |
| def_bool n |
| |
| config NO_IOPORT_MAP |
| def_bool !PCI |
| depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ |
| !SH_HP6XX && !SH_SOLUTION_ENGINE |
| |
| config IO_TRAPPED |
| bool |
| |
| config SWAP_IO_SPACE |
| bool |
| |
| config DMA_COHERENT |
| bool |
| |
| config DMA_NONCOHERENT |
| def_bool !DMA_COHERENT |
| |
| config NEED_DMA_MAP_STATE |
| def_bool DMA_NONCOHERENT |
| |
| config NEED_SG_DMA_LENGTH |
| def_bool y |
| |
| config PGTABLE_LEVELS |
| default 3 if X2TLB |
| default 2 |
| |
| source "init/Kconfig" |
| |
| source "kernel/Kconfig.freezer" |
| |
| menu "System type" |
| |
| # |
| # Processor families |
| # |
| config CPU_SH2 |
| bool |
| select SH_INTC |
| |
| config CPU_SH2A |
| bool |
| select CPU_SH2 |
| select UNCACHED_MAPPING |
| |
| config CPU_J2 |
| bool |
| select CPU_SH2 |
| select OF |
| select OF_EARLY_FLATTREE |
| |
| config CPU_SH3 |
| bool |
| select CPU_HAS_INTEVT |
| select CPU_HAS_SR_RB |
| select SH_INTC |
| select SYS_SUPPORTS_SH_TMU |
| |
| config CPU_SH4 |
| bool |
| select CPU_HAS_INTEVT |
| select CPU_HAS_SR_RB |
| select CPU_HAS_FPU if !CPU_SH4AL_DSP |
| select SH_INTC |
| select SYS_SUPPORTS_SH_TMU |
| select SYS_SUPPORTS_HUGETLBFS if MMU |
| |
| config CPU_SH4A |
| bool |
| select CPU_SH4 |
| |
| config CPU_SH4AL_DSP |
| bool |
| select CPU_SH4A |
| select CPU_HAS_DSP |
| |
| config CPU_SH5 |
| bool |
| select CPU_HAS_FPU |
| select SYS_SUPPORTS_SH_TMU |
| select SYS_SUPPORTS_HUGETLBFS if MMU |
| |
| config CPU_SHX2 |
| bool |
| |
| config CPU_SHX3 |
| bool |
| select DMA_COHERENT |
| select SYS_SUPPORTS_SMP |
| select SYS_SUPPORTS_NUMA |
| |
| config ARCH_SHMOBILE |
| bool |
| select ARCH_SUSPEND_POSSIBLE |
| select PM |
| |
| config CPU_HAS_PMU |
| depends on CPU_SH4 || CPU_SH4A |
| default y |
| bool |
| |
| if SUPERH32 |
| |
| choice |
| prompt "Processor sub-type selection" |
| |
| # |
| # Processor subtypes |
| # |
| |
| # SH-2 Processor Support |
| |
| config CPU_SUBTYPE_SH7619 |
| bool "Support SH7619 processor" |
| select CPU_SH2 |
| select SYS_SUPPORTS_SH_CMT |
| |
| config CPU_SUBTYPE_J2 |
| bool "Support J2 processor" |
| select CPU_J2 |
| select SYS_SUPPORTS_SMP |
| select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
| |
| # SH-2A Processor Support |
| |
| config CPU_SUBTYPE_SH7201 |
| bool "Support SH7201 processor" |
| select CPU_SH2A |
| select CPU_HAS_FPU |
| select SYS_SUPPORTS_SH_MTU2 |
| |
| config CPU_SUBTYPE_SH7203 |
| bool "Support SH7203 processor" |
| select CPU_SH2A |
| select CPU_HAS_FPU |
| select SYS_SUPPORTS_SH_CMT |
| select SYS_SUPPORTS_SH_MTU2 |
| select PINCTRL |
| |
| config CPU_SUBTYPE_SH7206 |
| bool "Support SH7206 processor" |
| select CPU_SH2A |
| select SYS_SUPPORTS_SH_CMT |
| select SYS_SUPPORTS_SH_MTU2 |
| |
| config CPU_SUBTYPE_SH7263 |
| bool "Support SH7263 processor" |
| select CPU_SH2A |
| select CPU_HAS_FPU |
| select SYS_SUPPORTS_SH_CMT |
| select SYS_SUPPORTS_SH_MTU2 |
| |
| config CPU_SUBTYPE_SH7264 |
| bool "Support SH7264 processor" |
| select CPU_SH2A |
| select CPU_HAS_FPU |
| select SYS_SUPPORTS_SH_CMT |
| select SYS_SUPPORTS_SH_MTU2 |
| select PINCTRL |
| |
| config CPU_SUBTYPE_SH7269 |
| bool "Support SH7269 processor" |
| select CPU_SH2A |
| select CPU_HAS_FPU |
| select SYS_SUPPORTS_SH_CMT |
| select SYS_SUPPORTS_SH_MTU2 |
| select PINCTRL |
| |
| config CPU_SUBTYPE_MXG |
| bool "Support MX-G processor" |
| select CPU_SH2A |
| select SYS_SUPPORTS_SH_MTU2 |
| help |
| Select MX-G if running on an R8A03022BG part. |
| |
| # SH-3 Processor Support |
| |
| config CPU_SUBTYPE_SH7705 |
| bool "Support SH7705 processor" |
| select CPU_SH3 |
| |
| config CPU_SUBTYPE_SH7706 |
| bool "Support SH7706 processor" |
| select CPU_SH3 |
| help |
| Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. |
| |
| config CPU_SUBTYPE_SH7707 |
| bool "Support SH7707 processor" |
| select CPU_SH3 |
| help |
| Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. |
| |
| config CPU_SUBTYPE_SH7708 |
| bool "Support SH7708 processor" |
| select CPU_SH3 |
| help |
| Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or |
| if you have a 100 Mhz SH-3 HD6417708R CPU. |
| |
| config CPU_SUBTYPE_SH7709 |
| bool "Support SH7709 processor" |
| select CPU_SH3 |
| help |
| Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. |
| |
| config CPU_SUBTYPE_SH7710 |
| bool "Support SH7710 processor" |
| select CPU_SH3 |
| select CPU_HAS_DSP |
| help |
| Select SH7710 if you have a SH3-DSP SH7710 CPU. |
| |
| config CPU_SUBTYPE_SH7712 |
| bool "Support SH7712 processor" |
| select CPU_SH3 |
| select CPU_HAS_DSP |
| help |
| Select SH7712 if you have a SH3-DSP SH7712 CPU. |
| |
| config CPU_SUBTYPE_SH7720 |
| bool "Support SH7720 processor" |
| select CPU_SH3 |
| select CPU_HAS_DSP |
| select SYS_SUPPORTS_SH_CMT |
| select USB_OHCI_SH if USB_OHCI_HCD |
| select PINCTRL |
| help |
| Select SH7720 if you have a SH3-DSP SH7720 CPU. |
| |
| config CPU_SUBTYPE_SH7721 |
| bool "Support SH7721 processor" |
| select CPU_SH3 |
| select CPU_HAS_DSP |
| select SYS_SUPPORTS_SH_CMT |
| select USB_OHCI_SH if USB_OHCI_HCD |
| help |
| Select SH7721 if you have a SH3-DSP SH7721 CPU. |
| |
| # SH-4 Processor Support |
| |
| config CPU_SUBTYPE_SH7750 |
| bool "Support SH7750 processor" |
| select CPU_SH4 |
| help |
| Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. |
| |
| config CPU_SUBTYPE_SH7091 |
| bool "Support SH7091 processor" |
| select CPU_SH4 |
| help |
| Select SH7091 if you have an SH-4 based Sega device (such as |
| the Dreamcast, Naomi, and Naomi 2). |
| |
| config CPU_SUBTYPE_SH7750R |
| bool "Support SH7750R processor" |
| select CPU_SH4 |
| |
| config CPU_SUBTYPE_SH7750S |
| bool "Support SH7750S processor" |
| select CPU_SH4 |
| |
| config CPU_SUBTYPE_SH7751 |
| bool "Support SH7751 processor" |
| select CPU_SH4 |
| help |
| Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, |
| or if you have a HD6417751R CPU. |
| |
| config CPU_SUBTYPE_SH7751R |
| bool "Support SH7751R processor" |
| select CPU_SH4 |
| |
| config CPU_SUBTYPE_SH7760 |
| bool "Support SH7760 processor" |
| select CPU_SH4 |
| |
| config CPU_SUBTYPE_SH4_202 |
| bool "Support SH4-202 processor" |
| select CPU_SH4 |
| |
| # SH-4A Processor Support |
| |
| config CPU_SUBTYPE_SH7723 |
| bool "Support SH7723 processor" |
| select CPU_SH4A |
| select CPU_SHX2 |
| select ARCH_SHMOBILE |
| select ARCH_SPARSEMEM_ENABLE |
| select SYS_SUPPORTS_SH_CMT |
| select PINCTRL |
| help |
| Select SH7723 if you have an SH-MobileR2 CPU. |
| |
| config CPU_SUBTYPE_SH7724 |
| bool "Support SH7724 processor" |
| select CPU_SH4A |
| select CPU_SHX2 |
| select ARCH_SHMOBILE |
| select ARCH_SPARSEMEM_ENABLE |
| select SYS_SUPPORTS_SH_CMT |
| select PINCTRL |
| help |
| Select SH7724 if you have an SH-MobileR2R CPU. |
| |
| config CPU_SUBTYPE_SH7734 |
| bool "Support SH7734 processor" |
| select CPU_SH4A |
| select CPU_SHX2 |
| select PINCTRL |
| help |
| Select SH7734 if you have a SH4A SH7734 CPU. |
| |
| config CPU_SUBTYPE_SH7757 |
| bool "Support SH7757 processor" |
| select CPU_SH4A |
| select CPU_SHX2 |
| select PINCTRL |
| help |
| Select SH7757 if you have a SH4A SH7757 CPU. |
| |
| config CPU_SUBTYPE_SH7763 |
| bool "Support SH7763 processor" |
| select CPU_SH4A |
| select USB_OHCI_SH if USB_OHCI_HCD |
| help |
| Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. |
| |
| config CPU_SUBTYPE_SH7770 |
| bool "Support SH7770 processor" |
| select CPU_SH4A |
| |
| config CPU_SUBTYPE_SH7780 |
| bool "Support SH7780 processor" |
| select CPU_SH4A |
| |
| config CPU_SUBTYPE_SH7785 |
| bool "Support SH7785 processor" |
| select CPU_SH4A |
| select CPU_SHX2 |
| select ARCH_SPARSEMEM_ENABLE |
| select SYS_SUPPORTS_NUMA |
| select PINCTRL |
| |
| config CPU_SUBTYPE_SH7786 |
| bool "Support SH7786 processor" |
| select CPU_SH4A |
| select CPU_SHX3 |
| select CPU_HAS_PTEAEX |
| select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
| select USB_OHCI_SH if USB_OHCI_HCD |
| select USB_EHCI_SH if USB_EHCI_HCD |
| select PINCTRL |
| |
| config CPU_SUBTYPE_SHX3 |
| bool "Support SH-X3 processor" |
| select CPU_SH4A |
| select CPU_SHX3 |
| select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
| select GPIOLIB |
| select PINCTRL |
| |
| # SH4AL-DSP Processor Support |
| |
| config CPU_SUBTYPE_SH7343 |
| bool "Support SH7343 processor" |
| select CPU_SH4AL_DSP |
| select ARCH_SHMOBILE |
| select SYS_SUPPORTS_SH_CMT |
| |
| config CPU_SUBTYPE_SH7722 |
| bool "Support SH7722 processor" |
| select CPU_SH4AL_DSP |
| select CPU_SHX2 |
| select ARCH_SHMOBILE |
| select ARCH_SPARSEMEM_ENABLE |
| select SYS_SUPPORTS_NUMA |
| select SYS_SUPPORTS_SH_CMT |
| select PINCTRL |
| |
| config CPU_SUBTYPE_SH7366 |
| bool "Support SH7366 processor" |
| select CPU_SH4AL_DSP |
| select CPU_SHX2 |
| select ARCH_SHMOBILE |
| select ARCH_SPARSEMEM_ENABLE |
| select SYS_SUPPORTS_NUMA |
| select SYS_SUPPORTS_SH_CMT |
| |
| endchoice |
| |
| endif |
| |
| if SUPERH64 |
| |
| choice |
| prompt "Processor sub-type selection" |
| |
| # SH-5 Processor Support |
| |
| config CPU_SUBTYPE_SH5_101 |
| bool "Support SH5-101 processor" |
| select CPU_SH5 |
| |
| config CPU_SUBTYPE_SH5_103 |
| bool "Support SH5-103 processor" |
| select CPU_SH5 |
| |
| endchoice |
| |
| endif |
| |
| source "arch/sh/mm/Kconfig" |
| |
| source "arch/sh/Kconfig.cpu" |
| |
| source "arch/sh/boards/Kconfig" |
| |
| menu "Timer and clock configuration" |
| |
| config SH_PCLK_FREQ |
| int "Peripheral clock frequency (in Hz)" |
| depends on SH_CLK_CPG_LEGACY |
| default "31250000" if CPU_SUBTYPE_SH7619 |
| default "33333333" if CPU_SUBTYPE_SH7770 || \ |
| CPU_SUBTYPE_SH7760 || \ |
| CPU_SUBTYPE_SH7705 || \ |
| CPU_SUBTYPE_SH7203 || \ |
| CPU_SUBTYPE_SH7206 || \ |
| CPU_SUBTYPE_SH7263 || \ |
| CPU_SUBTYPE_MXG |
| default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R |
| default "66000000" if CPU_SUBTYPE_SH4_202 |
| default "50000000" |
| help |
| This option is used to specify the peripheral clock frequency. |
| This is necessary for determining the reference clock value on |
| platforms lacking an RTC. |
| |
| config SH_CLK_CPG |
| def_bool y |
| |
| config SH_CLK_CPG_LEGACY |
| depends on SH_CLK_CPG |
| def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ |
| !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ |
| !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ |
| !CPU_SUBTYPE_SH7269 |
| |
| endmenu |
| |
| menu "CPU Frequency scaling" |
| source "drivers/cpufreq/Kconfig" |
| endmenu |
| |
| source "arch/sh/drivers/Kconfig" |
| |
| endmenu |
| |
| menu "Kernel features" |
| |
| source kernel/Kconfig.hz |
| |
| config KEXEC |
| bool "kexec system call (EXPERIMENTAL)" |
| depends on SUPERH32 && MMU |
| select KEXEC_CORE |
| help |
| kexec is a system call that implements the ability to shutdown your |
| current kernel, and to start another kernel. It is like a reboot |
| but it is independent of the system firmware. And like a reboot |
| you can start any kernel with it, not just Linux. |
| |
| The name comes from the similarity to the exec system call. |
| |
| It is an ongoing process to be certain the hardware in a machine |
| is properly shutdown, so do not be surprised if this code does not |
| initially work for you. As of this writing the exact hardware |
| interface is strongly in flux, so no good recommendation can be |
| made. |
| |
| config CRASH_DUMP |
| bool "kernel crash dumps (EXPERIMENTAL)" |
| depends on SUPERH32 && BROKEN_ON_SMP |
| help |
| Generate crash dump after being started by kexec. |
| This should be normally only set in special crash dump kernels |
| which are loaded in the main kernel with kexec-tools into |
| a specially reserved region and then later executed after |
| a crash by kdump/kexec. The crash dump kernel must be compiled |
| to a memory address not used by the main kernel using |
| PHYSICAL_START. |
| |
| For more details see Documentation/kdump/kdump.txt |
| |
| config KEXEC_JUMP |
| bool "kexec jump (EXPERIMENTAL)" |
| depends on SUPERH32 && KEXEC && HIBERNATION |
| help |
| Jump between original kernel and kexeced kernel and invoke |
| code via KEXEC |
| |
| config PHYSICAL_START |
| hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) |
| default MEMORY_START |
| ---help--- |
| This gives the physical address where the kernel is loaded |
| and is ordinarily the same as MEMORY_START. |
| |
| Different values are primarily used in the case of kexec on panic |
| where the fail safe kernel needs to run at a different address |
| than the panic-ed kernel. |
| |
| config SECCOMP |
| bool "Enable seccomp to safely compute untrusted bytecode" |
| depends on PROC_FS |
| help |
| This kernel feature is useful for number crunching applications |
| that may need to compute untrusted bytecode during their |
| execution. By using pipes or other transports made available to |
| the process as file descriptors supporting the read/write |
| syscalls, it's possible to isolate those applications in |
| their own address space using seccomp. Once seccomp is |
| enabled via prctl, it cannot be disabled and the task is only |
| allowed to execute a few safe syscalls defined by each seccomp |
| mode. |
| |
| If unsure, say N. |
| |
| config SMP |
| bool "Symmetric multi-processing support" |
| depends on SYS_SUPPORTS_SMP |
| ---help--- |
| This enables support for systems with more than one CPU. If you have |
| a system with only one CPU, say N. If you have a system with more |
| than one CPU, say Y. |
| |
| If you say N here, the kernel will run on uni- and multiprocessor |
| machines, but will use only one CPU of a multiprocessor machine. If |
| you say Y here, the kernel will run on many, but not all, |
| uniprocessor machines. On a uniprocessor machine, the kernel |
| will run faster if you say N here. |
| |
| People using multiprocessor machines who say Y here should also say |
| Y to "Enhanced Real Time Clock Support", below. |
| |
| See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO |
| available at <http://www.tldp.org/docs.html#howto>. |
| |
| If you don't know what to do here, say N. |
| |
| config NR_CPUS |
| int "Maximum number of CPUs (2-32)" |
| range 2 32 |
| depends on SMP |
| default "4" if CPU_SUBTYPE_SHX3 |
| default "2" |
| help |
| This allows you to specify the maximum number of CPUs which this |
| kernel will support. The maximum supported value is 32 and the |
| minimum value which makes sense is 2. |
| |
| This is purely to save memory - each supported CPU adds |
| approximately eight kilobytes to the kernel image. |
| |
| config HOTPLUG_CPU |
| bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" |
| depends on SMP |
| help |
| Say Y here to experiment with turning CPUs off and on. CPUs |
| can be controlled through /sys/devices/system/cpu. |
| |
| source "kernel/Kconfig.preempt" |
| |
| config GUSA |
| def_bool y |
| depends on !SMP && SUPERH32 |
| help |
| This enables support for gUSA (general UserSpace Atomicity). |
| This is the default implementation for both UP and non-ll/sc |
| CPUs, and is used by the libc, amongst others. |
| |
| For additional information, design information can be found |
| in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. |
| |
| This should only be disabled for special cases where alternate |
| atomicity implementations exist. |
| |
| config GUSA_RB |
| bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" |
| depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) |
| help |
| Enabling this option will allow the kernel to implement some |
| atomic operations using a software implementation of load-locked/ |
| store-conditional (LLSC). On machines which do not have hardware |
| LLSC, this should be more efficient than the other alternative of |
| disabling interrupts around the atomic sequence. |
| |
| config HW_PERF_EVENTS |
| bool "Enable hardware performance counter support for perf events" |
| depends on PERF_EVENTS && CPU_HAS_PMU |
| default y |
| help |
| Enable hardware performance counter support for perf events. If |
| disabled, perf events will use software events only. |
| |
| source "drivers/sh/Kconfig" |
| |
| endmenu |
| |
| menu "Boot options" |
| |
| config USE_BUILTIN_DTB |
| bool "Use builtin DTB" |
| default n |
| depends on SH_DEVICE_TREE |
| help |
| Link a device tree blob for particular hardware into the kernel, |
| suppressing use of the DTB pointer provided by the bootloader. |
| This option should only be used with legacy bootloaders that are |
| not capable of providing a DTB to the kernel, or for experimental |
| hardware without stable device tree bindings. |
| |
| config BUILTIN_DTB_SOURCE |
| string "Source file for builtin DTB" |
| default "" |
| depends on USE_BUILTIN_DTB |
| help |
| Base name (without suffix, relative to arch/sh/boot/dts) for the |
| a DTS file that will be used to produce the DTB linked into the |
| kernel. |
| |
| config ZERO_PAGE_OFFSET |
| hex |
| default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ |
| SH_7751_SOLUTION_ENGINE |
| default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 |
| default "0x00002000" if PAGE_SIZE_8KB |
| default "0x00001000" |
| help |
| This sets the default offset of zero page. |
| |
| config BOOT_LINK_OFFSET |
| hex |
| default "0x00210000" if SH_SHMIN |
| default "0x00400000" if SH_CAYMAN |
| default "0x00810000" if SH_7780_SOLUTION_ENGINE |
| default "0x009e0000" if SH_TITAN |
| default "0x01800000" if SH_SDK7780 |
| default "0x02000000" if SH_EDOSK7760 |
| default "0x00800000" |
| help |
| This option allows you to set the link address offset of the zImage. |
| This can be useful if you are on a board which has a small amount of |
| memory. |
| |
| config ENTRY_OFFSET |
| hex |
| default "0x00001000" if PAGE_SIZE_4KB |
| default "0x00002000" if PAGE_SIZE_8KB |
| default "0x00004000" if PAGE_SIZE_16KB |
| default "0x00010000" if PAGE_SIZE_64KB |
| default "0x00000000" |
| |
| config ROMIMAGE_MMCIF |
| bool "Include MMCIF loader in romImage (EXPERIMENTAL)" |
| depends on CPU_SUBTYPE_SH7724 |
| help |
| Say Y here to include experimental MMCIF loading code in |
| romImage. With this enabled it is possible to write the romImage |
| kernel image to an MMC card and boot the kernel straight from |
| the reset vector. At reset the processor Mask ROM will load the |
| first part of the romImage which in turn loads the rest the kernel |
| image to RAM using the MMCIF hardware block. |
| |
| choice |
| prompt "Kernel command line" |
| optional |
| default CMDLINE_OVERWRITE |
| help |
| Setting this option allows the kernel command line arguments |
| to be set. |
| |
| config CMDLINE_OVERWRITE |
| bool "Overwrite bootloader kernel arguments" |
| help |
| Given string will overwrite any arguments passed in by |
| a bootloader. |
| |
| config CMDLINE_EXTEND |
| bool "Extend bootloader kernel arguments" |
| help |
| Given string will be concatenated with arguments passed in |
| by a bootloader. |
| |
| endchoice |
| |
| config CMDLINE |
| string "Kernel command line arguments string" |
| depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND |
| default "console=ttySC1,115200" |
| |
| endmenu |
| |
| menu "Bus options" |
| |
| config SUPERHYWAY |
| tristate "SuperHyway Bus support" |
| depends on CPU_SUBTYPE_SH4_202 |
| |
| config MAPLE |
| bool "Maple Bus support" |
| depends on SH_DREAMCAST |
| help |
| The Maple Bus is SEGA's serial communication bus for peripherals |
| on the Dreamcast. Without this bus support you won't be able to |
| get your Dreamcast keyboard etc to work, so most users |
| probably want to say 'Y' here, unless you are only using the |
| Dreamcast with a serial line terminal or a remote network |
| connection. |
| |
| config PCI |
| bool "PCI support" |
| depends on SYS_SUPPORTS_PCI |
| select PCI_DOMAINS |
| select GENERIC_PCI_IOMAP |
| select NO_GENERIC_PCI_IOPORT_MAP |
| help |
| Find out whether you have a PCI motherboard. PCI is the name of a |
| bus system, i.e. the way the CPU talks to the other stuff inside |
| your box. If you have PCI, say Y, otherwise N. |
| |
| config PCI_DOMAINS |
| bool |
| |
| source "drivers/pci/Kconfig" |
| |
| source "drivers/pcmcia/Kconfig" |
| |
| endmenu |
| |
| menu "Executable file formats" |
| |
| source "fs/Kconfig.binfmt" |
| |
| endmenu |
| |
| menu "Power management options (EXPERIMENTAL)" |
| |
| source "kernel/power/Kconfig" |
| |
| source "drivers/cpuidle/Kconfig" |
| |
| endmenu |
| |
| source "net/Kconfig" |
| |
| source "drivers/Kconfig" |
| |
| source "fs/Kconfig" |
| |
| source "arch/sh/Kconfig.debug" |
| |
| source "security/Kconfig" |
| |
| source "crypto/Kconfig" |
| |
| source "lib/Kconfig" |