arch/mips/mips-boards/generic/init.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * Copyright (C) 1999, 2000, 2004, 2005  MIPS Technologies, Inc.
  *	All rights reserved.
  *	Authors: Carsten Langgaard <carstenl@mips.com>
  *		 Maciej W. Rozycki <macro@mips.com>
  *
  *  This program is free software; you can distribute it and/or modify it
  *  under the terms of the GNU General Public License (Version 2) as
  *  published by the Free Software Foundation.
  *
  *  This program is distributed in the hope 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, write to the Free Software Foundation, Inc.,
  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  *
  * PROM library initialisation code.
  */
 #include <linux/init.h>
 #include <linux/string.h>
 #include <linux/kernel.h>

 #include <asm/bootinfo.h>
 #include <asm/gt64120.h>
 #include <asm/io.h>
 #include <asm/system.h>
 #include <asm/cacheflush.h>
 #include <asm/traps.h>

 #include <asm/mips-boards/prom.h>
 #include <asm/mips-boards/generic.h>
 #include <asm/mips-boards/bonito64.h>
 #include <asm/mips-boards/msc01_pci.h>

 #include <asm/mips-boards/malta.h>

 #ifdef CONFIG_KGDB
 extern int rs_kgdb_hook(int, int);
 extern int rs_putDebugChar(char);
 extern char rs_getDebugChar(void);
 extern int saa9730_kgdb_hook(int);
 extern int saa9730_putDebugChar(char);
 extern char saa9730_getDebugChar(void);
 #endif

 int prom_argc;
 int *_prom_argv, *_prom_envp;

 /*
  * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer.
  * This macro take care of sign extension, if running in 64-bit mode.
  */
 #define prom_envp(index) ((char *)(long)_prom_envp[(index)])

 int init_debug = 0;

 int mips_revision_corid;
 int mips_revision_sconid;

 /* Bonito64 system controller register base. */
 unsigned long _pcictrl_bonito;
 unsigned long _pcictrl_bonito_pcicfg;

 /* GT64120 system controller register base */
 unsigned long _pcictrl_gt64120;

 /* MIPS System controller register base */
 unsigned long _pcictrl_msc;

 char *prom_getenv(char *envname)
 {
 	/*
 	 * Return a pointer to the given environment variable.
 	 * In 64-bit mode: we're using 64-bit pointers, but all pointers
 	 * in the PROM structures are only 32-bit, so we need some
 	 * workarounds, if we are running in 64-bit mode.
 	 */
 	int i, index=0;

 	i = strlen(envname);

 	while (prom_envp(index)) {
 		if(strncmp(envname, prom_envp(index), i) == 0) {
 			return(prom_envp(index+1));
 		}
 		index += 2;
 	}

 	return NULL;
 }

 static inline unsigned char str2hexnum(unsigned char c)
 {
 	if (c >= '0' && c <= '9')
 		return c - '0';
 	if (c >= 'a' && c <= 'f')
 		return c - 'a' + 10;
 	return 0; /* foo */
 }

 static inline void str2eaddr(unsigned char *ea, unsigned char *str)
 {
 	int i;

 	for (i = 0; i < 6; i++) {
 		unsigned char num;

 		if((*str == '.') || (*str == ':'))
 			str++;
 		num = str2hexnum(*str++) << 4;
 		num |= (str2hexnum(*str++));
 		ea[i] = num;
 	}
 }

 int get_ethernet_addr(char *ethernet_addr)
 {
         char *ethaddr_str;

         ethaddr_str = prom_getenv("ethaddr");
 	if (!ethaddr_str) {
 	        printk("ethaddr not set in boot prom\n");
 		return -1;
 	}
 	str2eaddr(ethernet_addr, ethaddr_str);

 	if (init_debug > 1) {
 	        int i;
 		printk("get_ethernet_addr: ");
 	        for (i=0; i<5; i++)
 		        printk("%02x:", (unsigned char)*(ethernet_addr+i));
 		printk("%02x\n", *(ethernet_addr+i));
 	}

 	return 0;
 }

 #ifdef CONFIG_SERIAL_8250_CONSOLE
 static void __init console_config(void)
 {
 	char console_string[40];
 	int baud = 0;
 	char parity = '\0', bits = '\0', flow = '\0';
 	char *s;

 	if ((strstr(prom_getcmdline(), "console=")) == NULL) {
 		s = prom_getenv("modetty0");
 		if (s) {
 			while (*s >= '0' && *s <= '9')
 				baud = baud*10 + *s++ - '0';
 			if (*s == ',') s++;
 			if (*s) parity = *s++;
 			if (*s == ',') s++;
 			if (*s) bits = *s++;
 			if (*s == ',') s++;
 			if (*s == 'h') flow = 'r';
 		}
 		if (baud == 0)
 			baud = 38400;
 		if (parity != 'n' && parity != 'o' && parity != 'e')
 			parity = 'n';
 		if (bits != '7' && bits != '8')
 			bits = '8';
 		if (flow == '\0')
 			flow = 'r';
 		sprintf (console_string, " console=ttyS0,%d%c%c%c", baud, parity, bits, flow);
 		strcat (prom_getcmdline(), console_string);
 		pr_info("Config serial console:%s\n", console_string);
 	}
 }
 #endif

 #ifdef CONFIG_KGDB
 void __init kgdb_config (void)
 {
 	extern int (*generic_putDebugChar)(char);
 	extern char (*generic_getDebugChar)(void);
 	char *argptr;
 	int line, speed;

 	argptr = prom_getcmdline();
 	if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
 		argptr += strlen("kgdb=ttyS");
 		if (*argptr != '0' && *argptr != '1')
 			printk("KGDB: Unknown serial line /dev/ttyS%c, "
 			       "falling back to /dev/ttyS1\n", *argptr);
 		line = *argptr == '0' ? 0 : 1;
 		printk("KGDB: Using serial line /dev/ttyS%d for session\n", line);

 		speed = 0;
 		if (*++argptr == ',')
 		{
 			int c;
 			while ((c = *++argptr) && ('0' <= c && c <= '9'))
 				speed = speed * 10 + c - '0';
 		}
 #ifdef CONFIG_MIPS_ATLAS
 		if (line == 1) {
 			speed = saa9730_kgdb_hook(speed);
 			generic_putDebugChar = saa9730_putDebugChar;
 			generic_getDebugChar = saa9730_getDebugChar;
 		}
 		else
 #endif
 		{
 			speed = rs_kgdb_hook(line, speed);
 			generic_putDebugChar = rs_putDebugChar;
 			generic_getDebugChar = rs_getDebugChar;
 		}

 		pr_info("KGDB: Using serial line /dev/ttyS%d at %d for "
 		        "session, please connect your debugger\n",
 		        line ? 1 : 0, speed);

 		{
 			char *s;
 			for (s = "Please connect GDB to this port\r\n"; *s; )
 				generic_putDebugChar (*s++);
 		}

 		/* Breakpoint is invoked after interrupts are initialised */
 	}
 }
 #endif

 void __init mips_nmi_setup (void)
 {
 	void *base;
 	extern char except_vec_nmi;

 	base = cpu_has_veic ?
 		(void *)(CAC_BASE + 0xa80) :
 		(void *)(CAC_BASE + 0x380);
 	memcpy(base, &except_vec_nmi, 0x80);
 	flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
 }

 void __init mips_ejtag_setup (void)
 {
 	void *base;
 	extern char except_vec_ejtag_debug;

 	base = cpu_has_veic ?
 		(void *)(CAC_BASE + 0xa00) :
 		(void *)(CAC_BASE + 0x300);
 	memcpy(base, &except_vec_ejtag_debug, 0x80);
 	flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
 }

 void __init prom_init(void)
 {
 	prom_argc = fw_arg0;
 	_prom_argv = (int *) fw_arg1;
 	_prom_envp = (int *) fw_arg2;

 	mips_display_message("LINUX");

 #ifdef CONFIG_MIPS_SEAD
 	set_io_port_base(KSEG1);
 #else
 	/*
 	 * early setup of _pcictrl_bonito so that we can determine
 	 * the system controller on a CORE_EMUL board
 	 */
 	_pcictrl_bonito = (unsigned long)ioremap(BONITO_REG_BASE, BONITO_REG_SIZE);

 	mips_revision_corid = MIPS_REVISION_CORID;

 	if (mips_revision_corid == MIPS_REVISION_CORID_CORE_EMUL) {
 		if (BONITO_PCIDID == 0x0001df53 ||
 		    BONITO_PCIDID == 0x0003df53)
 			mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_BON;
 		else
 			mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_MSC;
 	}

 	mips_revision_sconid = MIPS_REVISION_SCONID;
 	if (mips_revision_sconid == MIPS_REVISION_SCON_OTHER) {
 		switch (mips_revision_corid) {
 		case MIPS_REVISION_CORID_QED_RM5261:
 		case MIPS_REVISION_CORID_CORE_LV:
 		case MIPS_REVISION_CORID_CORE_FPGA:
 		case MIPS_REVISION_CORID_CORE_FPGAR2:
 			mips_revision_sconid = MIPS_REVISION_SCON_GT64120;
 			break;
 		case MIPS_REVISION_CORID_CORE_EMUL_BON:
 		case MIPS_REVISION_CORID_BONITO64:
 		case MIPS_REVISION_CORID_CORE_20K:
 			mips_revision_sconid = MIPS_REVISION_SCON_BONITO;
 			break;
 		case MIPS_REVISION_CORID_CORE_MSC:
 		case MIPS_REVISION_CORID_CORE_FPGA2:
 		case MIPS_REVISION_CORID_CORE_FPGA3:
 		case MIPS_REVISION_CORID_CORE_FPGA4:
 		case MIPS_REVISION_CORID_CORE_24K:
 		case MIPS_REVISION_CORID_CORE_EMUL_MSC:
 			mips_revision_sconid = MIPS_REVISION_SCON_SOCIT;
 			break;
 		default:
 			mips_display_message("CC Error");
 			while (1);   /* We die here... */
 		}
 	}

 	switch (mips_revision_sconid) {
 		u32 start, map, mask, data;

 	case MIPS_REVISION_SCON_GT64120:
 		/*
 		 * Setup the North bridge to do Master byte-lane swapping
 		 * when running in bigendian.
 		 */
 		_pcictrl_gt64120 = (unsigned long)ioremap(MIPS_GT_BASE, 0x2000);

 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 		GT_WRITE(GT_PCI0_CMD_OFS, GT_PCI0_CMD_MBYTESWAP_BIT |
 			 GT_PCI0_CMD_SBYTESWAP_BIT);
 #else
 		GT_WRITE(GT_PCI0_CMD_OFS, 0);
 #endif
 		/* Fix up PCI I/O mapping if necessary (for Atlas).  */
 		start = GT_READ(GT_PCI0IOLD_OFS);
 		map = GT_READ(GT_PCI0IOREMAP_OFS);
 		if ((start & map) != 0) {
 			map &= ~start;
 			GT_WRITE(GT_PCI0IOREMAP_OFS, map);
 		}

 		set_io_port_base(MALTA_GT_PORT_BASE);
 		break;

 	case MIPS_REVISION_SCON_BONITO:
 		_pcictrl_bonito_pcicfg = (unsigned long)ioremap(BONITO_PCICFG_BASE, BONITO_PCICFG_SIZE);

 		/*
 		 * Disable Bonito IOBC.
 		 */
 		BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
 			~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
 			  BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);

 		/*
 		 * Setup the North bridge to do Master byte-lane swapping
 		 * when running in bigendian.
 		 */
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 		BONITO_BONGENCFG = BONITO_BONGENCFG &
 			~(BONITO_BONGENCFG_MSTRBYTESWAP |
 			  BONITO_BONGENCFG_BYTESWAP);
 #else
 		BONITO_BONGENCFG = BONITO_BONGENCFG |
 			BONITO_BONGENCFG_MSTRBYTESWAP |
 			BONITO_BONGENCFG_BYTESWAP;
 #endif

 		set_io_port_base(MALTA_BONITO_PORT_BASE);
 		break;

 	case MIPS_REVISION_SCON_SOCIT:
 	case MIPS_REVISION_SCON_ROCIT:
 		_pcictrl_msc = (unsigned long)ioremap(MIPS_MSC01_PCI_REG_BASE, 0x2000);
 	mips_pci_controller:
 		mb();
 		MSC_READ(MSC01_PCI_CFG, data);
 		MSC_WRITE(MSC01_PCI_CFG, data & ~MSC01_PCI_CFG_EN_BIT);
 		wmb();

 		/* Fix up lane swapping.  */
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 		MSC_WRITE(MSC01_PCI_SWAP, MSC01_PCI_SWAP_NOSWAP);
 #else
 		MSC_WRITE(MSC01_PCI_SWAP,
 			  MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_IO_SHF |
 			  MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_MEM_SHF |
 			  MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_BAR0_SHF);
 #endif
 		/* Fix up target memory mapping.  */
 		MSC_READ(MSC01_PCI_BAR0, mask);
 		MSC_WRITE(MSC01_PCI_P2SCMSKL, mask & MSC01_PCI_BAR0_SIZE_MSK);

 		/* Don't handle target retries indefinitely.  */
 		if ((data & MSC01_PCI_CFG_MAXRTRY_MSK) ==
 		    MSC01_PCI_CFG_MAXRTRY_MSK)
 			data = (data & ~(MSC01_PCI_CFG_MAXRTRY_MSK <<
 					 MSC01_PCI_CFG_MAXRTRY_SHF)) |
 			       ((MSC01_PCI_CFG_MAXRTRY_MSK - 1) <<
 				MSC01_PCI_CFG_MAXRTRY_SHF);

 		wmb();
 		MSC_WRITE(MSC01_PCI_CFG, data);
 		mb();

 		set_io_port_base(MALTA_MSC_PORT_BASE);
 		break;

 	case MIPS_REVISION_SCON_SOCITSC:
 	case MIPS_REVISION_SCON_SOCITSCP:
 		_pcictrl_msc = (unsigned long)ioremap(MIPS_SOCITSC_PCI_REG_BASE, 0x2000);
 		goto mips_pci_controller;

 	default:
 		/* Unknown system controller */
 		mips_display_message("SC Error");
 		while (1);   /* We die here... */
 	}
 #endif
 	board_nmi_handler_setup = mips_nmi_setup;
 	board_ejtag_handler_setup = mips_ejtag_setup;

 	pr_info("\nLINUX started...\n");
 	prom_init_cmdline();
 	prom_meminit();
 #ifdef CONFIG_SERIAL_8250_CONSOLE
 	console_config();
 #endif
 }
	/*
	* Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc.
	* All rights reserved.
	* Authors: Carsten Langgaard <carstenl@mips.com>
	* Maciej W. Rozycki <macro@mips.com>
	*
	* This program is free software; you can distribute it and/or modify it
	* under the terms of the GNU General Public License (Version 2) as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope 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, write to the Free Software Foundation, Inc.,
	* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
	*
	* PROM library initialisation code.
	*/
	#include <linux/init.h>
	#include <linux/string.h>
	#include <linux/kernel.h>

	#include <asm/bootinfo.h>
	#include <asm/gt64120.h>
	#include <asm/io.h>
	#include <asm/system.h>
	#include <asm/cacheflush.h>
	#include <asm/traps.h>

	#include <asm/mips-boards/prom.h>
	#include <asm/mips-boards/generic.h>
	#include <asm/mips-boards/bonito64.h>
	#include <asm/mips-boards/msc01_pci.h>

	#include <asm/mips-boards/malta.h>

	#ifdef CONFIG_KGDB
	extern int rs_kgdb_hook(int, int);
	extern int rs_putDebugChar(char);
	extern char rs_getDebugChar(void);
	extern int saa9730_kgdb_hook(int);
	extern int saa9730_putDebugChar(char);
	extern char saa9730_getDebugChar(void);
	#endif

	int prom_argc;
	int _prom_argv, _prom_envp;

	/*
	* YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer.
	* This macro take care of sign extension, if running in 64-bit mode.
	*/
	#define prom_envp(index) ((char *)(long)_prom_envp[(index)])

	int init_debug = 0;

	int mips_revision_corid;
	int mips_revision_sconid;

	/* Bonito64 system controller register base. */
	unsigned long _pcictrl_bonito;
	unsigned long _pcictrl_bonito_pcicfg;

	/* GT64120 system controller register base */
	unsigned long _pcictrl_gt64120;

	/* MIPS System controller register base */
	unsigned long _pcictrl_msc;

	char prom_getenv(char envname)
	{
	/*
	* Return a pointer to the given environment variable.
	* In 64-bit mode: we're using 64-bit pointers, but all pointers
	* in the PROM structures are only 32-bit, so we need some
	* workarounds, if we are running in 64-bit mode.
	*/
	int i, index=0;

	i = strlen(envname);

	while (prom_envp(index)) {
	if(strncmp(envname, prom_envp(index), i) == 0) {
	return(prom_envp(index+1));
	}
	index += 2;
	}

	return NULL;
	}

	static inline unsigned char str2hexnum(unsigned char c)
	{
	if (c >= '0' && c <= '9')
	return c - '0';
	if (c >= 'a' && c <= 'f')
	return c - 'a' + 10;
	return 0; /* foo */
	}

	static inline void str2eaddr(unsigned char ea, unsigned char str)
	{
	int i;

	for (i = 0; i < 6; i++) {
	unsigned char num;

	if((str == '.') \|\| (str == ':'))
	str++;
	num = str2hexnum(*str++) << 4;
	num \|= (str2hexnum(*str++));
	ea[i] = num;
	}
	}

	int get_ethernet_addr(char *ethernet_addr)
	{
	char *ethaddr_str;

	ethaddr_str = prom_getenv("ethaddr");
	if (!ethaddr_str) {
	printk("ethaddr not set in boot prom\n");
	return -1;
	}
	str2eaddr(ethernet_addr, ethaddr_str);

	if (init_debug > 1) {
	int i;
	printk("get_ethernet_addr: ");
	for (i=0; i<5; i++)
	printk("%02x:", (unsigned char)*(ethernet_addr+i));
	printk("%02x\n", *(ethernet_addr+i));
	}

	return 0;
	}

	#ifdef CONFIG_SERIAL_8250_CONSOLE
	static void __init console_config(void)
	{
	char console_string[40];
	int baud = 0;
	char parity = '\0', bits = '\0', flow = '\0';
	char *s;

	if ((strstr(prom_getcmdline(), "console=")) == NULL) {
	s = prom_getenv("modetty0");
	if (s) {
	while (s >= '0' && s <= '9')
	baud = baud10 + s++ - '0';
	if (*s == ',') s++;
	if (s) parity = s++;
	if (*s == ',') s++;
	if (s) bits = s++;
	if (*s == ',') s++;
	if (*s == 'h') flow = 'r';
	}
	if (baud == 0)
	baud = 38400;
	if (parity != 'n' && parity != 'o' && parity != 'e')
	parity = 'n';
	if (bits != '7' && bits != '8')
	bits = '8';
	if (flow == '\0')
	flow = 'r';
	sprintf (console_string, " console=ttyS0,%d%c%c%c", baud, parity, bits, flow);
	strcat (prom_getcmdline(), console_string);
	pr_info("Config serial console:%s\n", console_string);
	}
	}
	#endif

	#ifdef CONFIG_KGDB
	void __init kgdb_config (void)
	{
	extern int (*generic_putDebugChar)(char);
	extern char (*generic_getDebugChar)(void);
	char *argptr;
	int line, speed;

	argptr = prom_getcmdline();
	if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
	argptr += strlen("kgdb=ttyS");
	if (argptr != '0' && argptr != '1')
	printk("KGDB: Unknown serial line /dev/ttyS%c, "
	"falling back to /dev/ttyS1\n", *argptr);
	line = *argptr == '0' ? 0 : 1;
	printk("KGDB: Using serial line /dev/ttyS%d for session\n", line);

	speed = 0;
	if (*++argptr == ',')
	{
	int c;
	while ((c = *++argptr) && ('0' <= c && c <= '9'))
	speed = speed * 10 + c - '0';
	}
	#ifdef CONFIG_MIPS_ATLAS
	if (line == 1) {
	speed = saa9730_kgdb_hook(speed);
	generic_putDebugChar = saa9730_putDebugChar;
	generic_getDebugChar = saa9730_getDebugChar;
	}
	else
	#endif
	{
	speed = rs_kgdb_hook(line, speed);
	generic_putDebugChar = rs_putDebugChar;
	generic_getDebugChar = rs_getDebugChar;
	}

	pr_info("KGDB: Using serial line /dev/ttyS%d at %d for "
	"session, please connect your debugger\n",
	line ? 1 : 0, speed);

	{
	char *s;
	for (s = "Please connect GDB to this port\r\n"; *s; )
	generic_putDebugChar (*s++);
	}

	/* Breakpoint is invoked after interrupts are initialised */
	}
	}
	#endif

	void __init mips_nmi_setup (void)
	{
	void *base;
	extern char except_vec_nmi;

	base = cpu_has_veic ?
	(void *)(CAC_BASE + 0xa80) :
	(void *)(CAC_BASE + 0x380);
	memcpy(base, &except_vec_nmi, 0x80);
	flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
	}

	void __init mips_ejtag_setup (void)
	{
	void *base;
	extern char except_vec_ejtag_debug;

	base = cpu_has_veic ?
	(void *)(CAC_BASE + 0xa00) :
	(void *)(CAC_BASE + 0x300);
	memcpy(base, &except_vec_ejtag_debug, 0x80);
	flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
	}

	void __init prom_init(void)
	{
	prom_argc = fw_arg0;
	_prom_argv = (int *) fw_arg1;
	_prom_envp = (int *) fw_arg2;

	mips_display_message("LINUX");

	#ifdef CONFIG_MIPS_SEAD
	set_io_port_base(KSEG1);
	#else
	/*
	* early setup of _pcictrl_bonito so that we can determine
	* the system controller on a CORE_EMUL board
	*/
	_pcictrl_bonito = (unsigned long)ioremap(BONITO_REG_BASE, BONITO_REG_SIZE);

	mips_revision_corid = MIPS_REVISION_CORID;

	if (mips_revision_corid == MIPS_REVISION_CORID_CORE_EMUL) {
	if (BONITO_PCIDID == 0x0001df53 \|\|
	BONITO_PCIDID == 0x0003df53)
	mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_BON;
	else
	mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_MSC;
	}

	mips_revision_sconid = MIPS_REVISION_SCONID;
	if (mips_revision_sconid == MIPS_REVISION_SCON_OTHER) {
	switch (mips_revision_corid) {
	case MIPS_REVISION_CORID_QED_RM5261:
	case MIPS_REVISION_CORID_CORE_LV:
	case MIPS_REVISION_CORID_CORE_FPGA:
	case MIPS_REVISION_CORID_CORE_FPGAR2:
	mips_revision_sconid = MIPS_REVISION_SCON_GT64120;
	break;
	case MIPS_REVISION_CORID_CORE_EMUL_BON:
	case MIPS_REVISION_CORID_BONITO64:
	case MIPS_REVISION_CORID_CORE_20K:
	mips_revision_sconid = MIPS_REVISION_SCON_BONITO;
	break;
	case MIPS_REVISION_CORID_CORE_MSC:
	case MIPS_REVISION_CORID_CORE_FPGA2:
	case MIPS_REVISION_CORID_CORE_FPGA3:
	case MIPS_REVISION_CORID_CORE_FPGA4:
	case MIPS_REVISION_CORID_CORE_24K:
	case MIPS_REVISION_CORID_CORE_EMUL_MSC:
	mips_revision_sconid = MIPS_REVISION_SCON_SOCIT;
	break;
	default:
	mips_display_message("CC Error");
	while (1); /* We die here... */
	}
	}

	switch (mips_revision_sconid) {
	u32 start, map, mask, data;

	case MIPS_REVISION_SCON_GT64120:
	/*
	* Setup the North bridge to do Master byte-lane swapping
	* when running in bigendian.
	*/
	_pcictrl_gt64120 = (unsigned long)ioremap(MIPS_GT_BASE, 0x2000);

	#ifdef CONFIG_CPU_LITTLE_ENDIAN
	GT_WRITE(GT_PCI0_CMD_OFS, GT_PCI0_CMD_MBYTESWAP_BIT \|
	GT_PCI0_CMD_SBYTESWAP_BIT);
	#else
	GT_WRITE(GT_PCI0_CMD_OFS, 0);
	#endif
	/* Fix up PCI I/O mapping if necessary (for Atlas). */
	start = GT_READ(GT_PCI0IOLD_OFS);
	map = GT_READ(GT_PCI0IOREMAP_OFS);
	if ((start & map) != 0) {
	map &= ~start;
	GT_WRITE(GT_PCI0IOREMAP_OFS, map);
	}

	set_io_port_base(MALTA_GT_PORT_BASE);
	break;

	case MIPS_REVISION_SCON_BONITO:
	_pcictrl_bonito_pcicfg = (unsigned long)ioremap(BONITO_PCICFG_BASE, BONITO_PCICFG_SIZE);

	/*
	* Disable Bonito IOBC.
	*/
	BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
	~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED \|
	BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);

	/*
	* Setup the North bridge to do Master byte-lane swapping
	* when running in bigendian.
	*/
	#ifdef CONFIG_CPU_LITTLE_ENDIAN
	BONITO_BONGENCFG = BONITO_BONGENCFG &
	~(BONITO_BONGENCFG_MSTRBYTESWAP \|
	BONITO_BONGENCFG_BYTESWAP);
	#else
	BONITO_BONGENCFG = BONITO_BONGENCFG \|
	BONITO_BONGENCFG_MSTRBYTESWAP \|
	BONITO_BONGENCFG_BYTESWAP;
	#endif

	set_io_port_base(MALTA_BONITO_PORT_BASE);
	break;

	case MIPS_REVISION_SCON_SOCIT:
	case MIPS_REVISION_SCON_ROCIT:
	_pcictrl_msc = (unsigned long)ioremap(MIPS_MSC01_PCI_REG_BASE, 0x2000);
	mips_pci_controller:
	mb();
	MSC_READ(MSC01_PCI_CFG, data);
	MSC_WRITE(MSC01_PCI_CFG, data & ~MSC01_PCI_CFG_EN_BIT);
	wmb();

	/* Fix up lane swapping. */
	#ifdef CONFIG_CPU_LITTLE_ENDIAN
	MSC_WRITE(MSC01_PCI_SWAP, MSC01_PCI_SWAP_NOSWAP);
	#else
	MSC_WRITE(MSC01_PCI_SWAP,
	MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_IO_SHF \|
	MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_MEM_SHF \|
	MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_BAR0_SHF);
	#endif
	/* Fix up target memory mapping. */
	MSC_READ(MSC01_PCI_BAR0, mask);
	MSC_WRITE(MSC01_PCI_P2SCMSKL, mask & MSC01_PCI_BAR0_SIZE_MSK);

	/* Don't handle target retries indefinitely. */
	if ((data & MSC01_PCI_CFG_MAXRTRY_MSK) ==
	MSC01_PCI_CFG_MAXRTRY_MSK)
	data = (data & ~(MSC01_PCI_CFG_MAXRTRY_MSK <<
	MSC01_PCI_CFG_MAXRTRY_SHF)) \|
	((MSC01_PCI_CFG_MAXRTRY_MSK - 1) <<
	MSC01_PCI_CFG_MAXRTRY_SHF);

	wmb();
	MSC_WRITE(MSC01_PCI_CFG, data);
	mb();

	set_io_port_base(MALTA_MSC_PORT_BASE);
	break;

	case MIPS_REVISION_SCON_SOCITSC:
	case MIPS_REVISION_SCON_SOCITSCP:
	_pcictrl_msc = (unsigned long)ioremap(MIPS_SOCITSC_PCI_REG_BASE, 0x2000);
	goto mips_pci_controller;

	default:
	/* Unknown system controller */
	mips_display_message("SC Error");
	while (1); /* We die here... */
	}
	#endif
	board_nmi_handler_setup = mips_nmi_setup;
	board_ejtag_handler_setup = mips_ejtag_setup;

	pr_info("\nLINUX started...\n");
	prom_init_cmdline();
	prom_meminit();
	#ifdef CONFIG_SERIAL_8250_CONSOLE
	console_config();
	#endif
	}