sibyte cleanups

SVN-Revision: 16470

5 files changed, 1146 insertions, 5 deletions

diff --git a/target/linux/sibyte/patches/001-sibyte_remove_simulation.patch b/target/linux/sibyte/patches/001-sibyte_remove_simulation.patch
new file mode 100644
index 0000000..c3208a4
--- /dev/null
+++ b/target/linux/sibyte/patches/001-sibyte_remove_simulation.patch
@@ -0,0 +1,37 @@
+[PATCH] Remove SiByte simulator option
+
+This patch removes the SiByte simulation Kconfig option, which only
+modified a printk.
+
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+
+--- a/arch/mips/sibyte/Kconfig
++++ b/arch/mips/sibyte/Kconfig
+@@ -128,13 +128,6 @@ config SIBYTE_ENABLE_LDT_IF_PCI
+ 	bool
+ 	select SIBYTE_HAS_LDT if PCI
+ 
+-config SIMULATION
+-	bool "Running under simulation"
+-	depends on SIBYTE_SB1xxx_SOC
+-	help
+-	  Build a kernel suitable for running under the GDB simulator.
+-	  Primarily adjusts the kernel's notion of time.
+-
+ config SB1_CEX_ALWAYS_FATAL
+ 	bool "All cache exceptions considered fatal (no recovery attempted)"
+ 	depends on SIBYTE_SB1xxx_SOC
+--- a/arch/mips/sibyte/swarm/setup.c
++++ b/arch/mips/sibyte/swarm/setup.c
+@@ -137,11 +137,7 @@ void __init plat_mem_setup(void)
+ 		swarm_rtc_type = RTC_M4LT81;
+ 
+ 	printk("This kernel optimized for "
+-#ifdef CONFIG_SIMULATION
+-	       "simulation"
+-#else
+ 	       "board"
+-#endif
+ 	       " runs "
+ #ifdef CONFIG_SIBYTE_CFE
+ 	       "with"
diff --git a/target/linux/sibyte/patches/002-sibyte_remove_standalone_support.patch b/target/linux/sibyte/patches/002-sibyte_remove_standalone_support.patch
new file mode 100644
index 0000000..e9d6311
--- /dev/null
+++ b/target/linux/sibyte/patches/002-sibyte_remove_standalone_support.patch
@@ -0,0 +1,1076 @@
+CFE is the only supported and used bootloader on the SiByte boards,
+the standalone kernel support has been never used outside Broadcom.
+Remove it and make the kernel use CFE by default.
+
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -167,7 +167,6 @@ libs-$(CONFIG_ARC)		+= arch/mips/fw/arc/
+ libs-$(CONFIG_CFE)		+= arch/mips/fw/cfe/
+ libs-$(CONFIG_SNIPROM)		+= arch/mips/fw/sni/
+ libs-y				+= arch/mips/fw/lib/
+-libs-$(CONFIG_SIBYTE_CFE)	+= arch/mips/sibyte/cfe/
+ 
+ #
+ # Board-dependent options and extra files
+--- a/arch/mips/sibyte/cfe/console.c
++++ /dev/null
+@@ -1,79 +0,0 @@
+-#include <linux/init.h>
+-#include <linux/errno.h>
+-#include <linux/console.h>
+-
+-#include <asm/sibyte/board.h>
+-
+-#include <asm/fw/cfe/cfe_api.h>
+-#include <asm/fw/cfe/cfe_error.h>
+-
+-extern int cfe_cons_handle;
+-
+-static void cfe_console_write(struct console *cons, const char *str,
+-		       unsigned int count)
+-{
+-	int i, last, written;
+-
+-	for (i=0, last=0; i<count; i++) {
+-		if (!str[i])
+-			/* XXXKW can/should this ever happen? */
+-			return;
+-		if (str[i] == '\n') {
+-			do {
+-				written = cfe_write(cfe_cons_handle, &str[last], i-last);
+-				if (written < 0)
+-					;
+-				last += written;
+-			} while (last < i);
+-			while (cfe_write(cfe_cons_handle, "\r", 1) <= 0)
+-				;
+-		}
+-	}
+-	if (last != count) {
+-		do {
+-			written = cfe_write(cfe_cons_handle, &str[last], count-last);
+-			if (written < 0)
+-				;
+-			last += written;
+-		} while (last < count);
+-	}
+-
+-}
+-
+-static int cfe_console_setup(struct console *cons, char *str)
+-{
+-	char consdev[32];
+-	/* XXXKW think about interaction with 'console=' cmdline arg */
+-	/* If none of the console options are configured, the build will break. */
+-	if (cfe_getenv("BOOT_CONSOLE", consdev, 32) >= 0) {
+-#ifdef CONFIG_SERIAL_SB1250_DUART
+-		if (!strcmp(consdev, "uart0")) {
+-			setleds("u0cn");
+-		} else if (!strcmp(consdev, "uart1")) {
+-			setleds("u1cn");
+-#endif
+-#ifdef CONFIG_VGA_CONSOLE
+-		} else if (!strcmp(consdev, "pcconsole0")) {
+-			setleds("pccn");
+-#endif
+-		} else
+-			return -ENODEV;
+-	}
+-	return 0;
+-}
+-
+-static struct console sb1250_cfe_cons = {
+-	.name		= "cfe",
+-	.write		= cfe_console_write,
+-	.setup		= cfe_console_setup,
+-	.flags		= CON_PRINTBUFFER,
+-	.index		= -1,
+-};
+-
+-static int __init sb1250_cfe_console_init(void)
+-{
+-	register_console(&sb1250_cfe_cons);
+-	return 0;
+-}
+-
+-console_initcall(sb1250_cfe_console_init);
+--- a/arch/mips/sibyte/cfe/Makefile
++++ /dev/null
+@@ -1,2 +0,0 @@
+-lib-y					= setup.o
+-lib-$(CONFIG_SIBYTE_CFE_CONSOLE)	+= console.o
+--- a/arch/mips/sibyte/cfe/setup.c
++++ /dev/null
+@@ -1,350 +0,0 @@
+-/*
+- * Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation
+- *
+- * 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, write to the Free Software
+- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+- */
+-
+-#include <linux/init.h>
+-#include <linux/kernel.h>
+-#include <linux/linkage.h>
+-#include <linux/mm.h>
+-#include <linux/blkdev.h>
+-#include <linux/bootmem.h>
+-#include <linux/pm.h>
+-#include <linux/smp.h>
+-
+-#include <asm/bootinfo.h>
+-#include <asm/reboot.h>
+-#include <asm/sibyte/board.h>
+-#include <asm/smp-ops.h>
+-
+-#include <asm/fw/cfe/cfe_api.h>
+-#include <asm/fw/cfe/cfe_error.h>
+-
+-/* Max ram addressable in 32-bit segments */
+-#ifdef CONFIG_64BIT
+-#define MAX_RAM_SIZE (~0ULL)
+-#else
+-#ifdef CONFIG_HIGHMEM
+-#ifdef CONFIG_64BIT_PHYS_ADDR
+-#define MAX_RAM_SIZE (~0ULL)
+-#else
+-#define MAX_RAM_SIZE (0xffffffffULL)
+-#endif
+-#else
+-#define MAX_RAM_SIZE (0x1fffffffULL)
+-#endif
+-#endif
+-
+-#define SIBYTE_MAX_MEM_REGIONS 8
+-phys_t board_mem_region_addrs[SIBYTE_MAX_MEM_REGIONS];
+-phys_t board_mem_region_sizes[SIBYTE_MAX_MEM_REGIONS];
+-unsigned int board_mem_region_count;
+-
+-int cfe_cons_handle;
+-
+-#ifdef CONFIG_BLK_DEV_INITRD
+-extern unsigned long initrd_start, initrd_end;
+-#endif
+-
+-static void __noreturn cfe_linux_exit(void *arg)
+-{
+-	int warm = *(int *)arg;
+-
+-	if (smp_processor_id()) {
+-		static int reboot_smp;
+-
+-		/* Don't repeat the process from another CPU */
+-		if (!reboot_smp) {
+-			/* Get CPU 0 to do the cfe_exit */
+-			reboot_smp = 1;
+-			smp_call_function(cfe_linux_exit, arg, 0);
+-		}
+-	} else {
+-		printk("Passing control back to CFE...\n");
+-		cfe_exit(warm, 0);
+-		printk("cfe_exit returned??\n");
+-	}
+-	while (1);
+-}
+-
+-static void __noreturn cfe_linux_restart(char *command)
+-{
+-	static const int zero;
+-
+-	cfe_linux_exit((void *)&zero);
+-}
+-
+-static void __noreturn cfe_linux_halt(void)
+-{
+-	static const int one = 1;
+-
+-	cfe_linux_exit((void *)&one);
+-}
+-
+-static __init void prom_meminit(void)
+-{
+-	u64 addr, size, type; /* regardless of 64BIT_PHYS_ADDR */
+-	int mem_flags = 0;
+-	unsigned int idx;
+-	int rd_flag;
+-#ifdef CONFIG_BLK_DEV_INITRD
+-	unsigned long initrd_pstart;
+-	unsigned long initrd_pend;
+-
+-	initrd_pstart = CPHYSADDR(initrd_start);
+-	initrd_pend = CPHYSADDR(initrd_end);
+-	if (initrd_start &&
+-	    ((initrd_pstart > MAX_RAM_SIZE)
+-	     || (initrd_pend > MAX_RAM_SIZE))) {
+-		panic("initrd out of addressable memory");
+-	}
+-
+-#endif /* INITRD */
+-
+-	for (idx = 0; cfe_enummem(idx, mem_flags, &addr, &size, &type) != CFE_ERR_NOMORE;
+-	     idx++) {
+-		rd_flag = 0;
+-		if (type == CFE_MI_AVAILABLE) {
+-			/*
+-			 * See if this block contains (any portion of) the
+-			 * ramdisk
+-			 */
+-#ifdef CONFIG_BLK_DEV_INITRD
+-			if (initrd_start) {
+-				if ((initrd_pstart > addr) &&
+-				    (initrd_pstart < (addr + size))) {
+-					add_memory_region(addr,
+-					                  initrd_pstart - addr,
+-					                  BOOT_MEM_RAM);
+-					rd_flag = 1;
+-				}
+-				if ((initrd_pend > addr) &&
+-				    (initrd_pend < (addr + size))) {
+-					add_memory_region(initrd_pend,
+-						(addr + size) - initrd_pend,
+-						 BOOT_MEM_RAM);
+-					rd_flag = 1;
+-				}
+-			}
+-#endif
+-			if (!rd_flag) {
+-				if (addr > MAX_RAM_SIZE)
+-					continue;
+-				if (addr+size > MAX_RAM_SIZE)
+-					size = MAX_RAM_SIZE - (addr+size) + 1;
+-				/*
+-				 * memcpy/__copy_user prefetch, which
+-				 * will cause a bus error for
+-				 * KSEG/KUSEG addrs not backed by RAM.
+-				 * Hence, reserve some padding for the
+-				 * prefetch distance.
+-				 */
+-				if (size > 512)
+-					size -= 512;
+-				add_memory_region(addr, size, BOOT_MEM_RAM);
+-			}
+-			board_mem_region_addrs[board_mem_region_count] = addr;
+-			board_mem_region_sizes[board_mem_region_count] = size;
+-			board_mem_region_count++;
+-			if (board_mem_region_count ==
+-			    SIBYTE_MAX_MEM_REGIONS) {
+-				/*
+-				 * Too many regions.  Need to configure more
+-				 */
+-				while(1);
+-			}
+-		}
+-	}
+-#ifdef CONFIG_BLK_DEV_INITRD
+-	if (initrd_start) {
+-		add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
+-				  BOOT_MEM_RESERVED);
+-	}
+-#endif
+-}
+-
+-#ifdef CONFIG_BLK_DEV_INITRD
+-static int __init initrd_setup(char *str)
+-{
+-	char rdarg[64];
+-	int idx;
+-	char *tmp, *endptr;
+-	unsigned long initrd_size;
+-
+-	/* Make a copy of the initrd argument so we can smash it up here */
+-	for (idx = 0; idx < sizeof(rdarg)-1; idx++) {
+-		if (!str[idx] || (str[idx] == ' ')) break;
+-		rdarg[idx] = str[idx];
+-	}
+-
+-	rdarg[idx] = 0;
+-	str = rdarg;
+-
+-	/*
+-	 *Initrd location comes in the form "<hex size of ramdisk in bytes>@<location in memory>"
+-	 *  e.g. initrd=3abfd@80010000.  This is set up by the loader.
+-	 */
+-	for (tmp = str; *tmp != '@'; tmp++) {
+-		if (!*tmp) {
+-			goto fail;
+-		}
+-	}
+-	*tmp = 0;
+-	tmp++;
+-	if (!*tmp) {
+-		goto fail;
+-	}
+-	initrd_size = simple_strtoul(str, &endptr, 16);
+-	if (*endptr) {
+-		*(tmp-1) = '@';
+-		goto fail;
+-	}
+-	*(tmp-1) = '@';
+-	initrd_start = simple_strtoul(tmp, &endptr, 16);
+-	if (*endptr) {
+-		goto fail;
+-	}
+-	initrd_end = initrd_start + initrd_size;
+-	printk("Found initrd of %lx@%lx\n", initrd_size, initrd_start);
+-	return 1;
+- fail:
+-	printk("Bad initrd argument.  Disabling initrd\n");
+-	initrd_start = 0;
+-	initrd_end = 0;
+-	return 1;
+-}
+-
+-#endif
+-
+-extern struct plat_smp_ops sb_smp_ops;
+-extern struct plat_smp_ops bcm1480_smp_ops;
+-
+-/*
+- * prom_init is called just after the cpu type is determined, from setup_arch()
+- */
+-void __init prom_init(void)
+-{
+-	uint64_t cfe_ept, cfe_handle;
+-	unsigned int cfe_eptseal;
+-	int argc = fw_arg0;
+-	char **envp = (char **) fw_arg2;
+-	int *prom_vec = (int *) fw_arg3;
+-
+-	_machine_restart   = cfe_linux_restart;
+-	_machine_halt      = cfe_linux_halt;
+-	pm_power_off = cfe_linux_halt;
+-
+-	/*
+-	 * Check if a loader was used; if NOT, the 4 arguments are
+-	 * what CFE gives us (handle, 0, EPT and EPTSEAL)
+-	 */
+-	if (argc < 0) {
+-		cfe_handle = (uint64_t)(long)argc;
+-		cfe_ept = (long)envp;
+-		cfe_eptseal = (uint32_t)(unsigned long)prom_vec;
+-	} else {
+-		if ((int32_t)(long)prom_vec < 0) {
+-			/*
+-			 * Old loader; all it gives us is the handle,
+-			 * so use the "known" entrypoint and assume
+-			 * the seal.
+-			 */
+-			cfe_handle = (uint64_t)(long)prom_vec;
+-			cfe_ept = (uint64_t)((int32_t)0x9fc00500);
+-			cfe_eptseal = CFE_EPTSEAL;
+-		} else {
+-			/*
+-			 * Newer loaders bundle the handle/ept/eptseal
+-			 * Note: prom_vec is in the loader's useg
+-			 * which is still alive in the TLB.
+-			 */
+-			cfe_handle = (uint64_t)((int32_t *)prom_vec)[0];
+-			cfe_ept = (uint64_t)((int32_t *)prom_vec)[2];
+-			cfe_eptseal = (unsigned int)((uint32_t *)prom_vec)[3];
+-		}
+-	}
+-	if (cfe_eptseal != CFE_EPTSEAL) {
+-		/* too early for panic to do any good */
+-		printk("CFE's entrypoint seal doesn't match. Spinning.");
+-		while (1) ;
+-	}
+-	cfe_init(cfe_handle, cfe_ept);
+-	/*
+-	 * Get the handle for (at least) prom_putchar, possibly for
+-	 * boot console
+-	 */
+-	cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
+-	if (cfe_getenv("LINUX_CMDLINE", arcs_cmdline, CL_SIZE) < 0) {
+-		if (argc < 0) {
+-			/*
+-			 * It's OK for direct boot to not provide a
+-			 *  command line
+-			 */
+-			strcpy(arcs_cmdline, "root=/dev/ram0 ");
+-		} else {
+-			/* The loader should have set the command line */
+-			/* too early for panic to do any good */
+-			printk("LINUX_CMDLINE not defined in cfe.");
+-			while (1) ;
+-		}
+-	}
+-
+-#ifdef CONFIG_BLK_DEV_INITRD
+-	{
+-		char *ptr;
+-		/* Need to find out early whether we've got an initrd.  So scan
+-		   the list looking now */
+-		for (ptr = arcs_cmdline; *ptr; ptr++) {
+-			while (*ptr == ' ') {
+-				ptr++;
+-			}
+-			if (!strncmp(ptr, "initrd=", 7)) {
+-				initrd_setup(ptr+7);
+-				break;
+-			} else {
+-				while (*ptr && (*ptr != ' ')) {
+-					ptr++;
+-				}
+-			}
+-		}
+-	}
+-#endif /* CONFIG_BLK_DEV_INITRD */
+-
+-	/* Not sure this is needed, but it's the safe way. */
+-	arcs_cmdline[CL_SIZE-1] = 0;
+-
+-	prom_meminit();
+-
+-#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
+-	register_smp_ops(&sb_smp_ops);
+-#endif
+-#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
+-	register_smp_ops(&bcm1480_smp_ops);
+-#endif
+-}
+-
+-void __init prom_free_prom_memory(void)
+-{
+-	/* Not sure what I'm supposed to do here.  Nothing, I think */
+-}
+-
+-void prom_putchar(char c)
+-{
+-	int ret;
+-
+-	while ((ret = cfe_write(cfe_cons_handle, &c, 1)) == 0)
+-		;
+-}
+--- /dev/null
++++ b/arch/mips/sibyte/common/cfe.c
+@@ -0,0 +1,350 @@
++/*
++ * Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation
++ *
++ * 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, write to the Free Software
++ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
++ */
++
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/linkage.h>
++#include <linux/mm.h>
++#include <linux/blkdev.h>
++#include <linux/bootmem.h>
++#include <linux/pm.h>
++#include <linux/smp.h>
++
++#include <asm/bootinfo.h>
++#include <asm/reboot.h>
++#include <asm/sibyte/board.h>
++#include <asm/smp-ops.h>
++
++#include <asm/fw/cfe/cfe_api.h>
++#include <asm/fw/cfe/cfe_error.h>
++
++/* Max ram addressable in 32-bit segments */
++#ifdef CONFIG_64BIT
++#define MAX_RAM_SIZE (~0ULL)
++#else
++#ifdef CONFIG_HIGHMEM
++#ifdef CONFIG_64BIT_PHYS_ADDR
++#define MAX_RAM_SIZE (~0ULL)
++#else
++#define MAX_RAM_SIZE (0xffffffffULL)
++#endif
++#else
++#define MAX_RAM_SIZE (0x1fffffffULL)
++#endif
++#endif
++
++#define SIBYTE_MAX_MEM_REGIONS 8
++phys_t board_mem_region_addrs[SIBYTE_MAX_MEM_REGIONS];
++phys_t board_mem_region_sizes[SIBYTE_MAX_MEM_REGIONS];
++unsigned int board_mem_region_count;
++
++int cfe_cons_handle;
++
++#ifdef CONFIG_BLK_DEV_INITRD
++extern unsigned long initrd_start, initrd_end;
++#endif
++
++static void __noreturn cfe_linux_exit(void *arg)
++{
++	int warm = *(int *)arg;
++
++	if (smp_processor_id()) {
++		static int reboot_smp;
++
++		/* Don't repeat the process from another CPU */
++		if (!reboot_smp) {
++			/* Get CPU 0 to do the cfe_exit */
++			reboot_smp = 1;
++			smp_call_function(cfe_linux_exit, arg, 0);
++		}
++	} else {
++		printk("Passing control back to CFE...\n");
++		cfe_exit(warm, 0);
++		printk("cfe_exit returned??\n");
++	}
++	while (1);
++}
++
++static void __noreturn cfe_linux_restart(char *command)
++{
++	static const int zero;
++
++	cfe_linux_exit((void *)&zero);
++}
++
++static void __noreturn cfe_linux_halt(void)
++{
++	static const int one = 1;
++
++	cfe_linux_exit((void *)&one);
++}
++
++static __init void prom_meminit(void)
++{
++	u64 addr, size, type; /* regardless of 64BIT_PHYS_ADDR */
++	int mem_flags = 0;
++	unsigned int idx;
++	int rd_flag;
++#ifdef CONFIG_BLK_DEV_INITRD
++	unsigned long initrd_pstart;
++	unsigned long initrd_pend;
++
++	initrd_pstart = CPHYSADDR(initrd_start);
++	initrd_pend = CPHYSADDR(initrd_end);
++	if (initrd_start &&
++	    ((initrd_pstart > MAX_RAM_SIZE)
++	     || (initrd_pend > MAX_RAM_SIZE))) {
++		panic("initrd out of addressable memory");
++	}
++
++#endif /* INITRD */
++
++	for (idx = 0; cfe_enummem(idx, mem_flags, &addr, &size, &type) != CFE_ERR_NOMORE;
++	     idx++) {
++		rd_flag = 0;
++		if (type == CFE_MI_AVAILABLE) {
++			/*
++			 * See if this block contains (any portion of) the
++			 * ramdisk
++			 */
++#ifdef CONFIG_BLK_DEV_INITRD
++			if (initrd_start) {
++				if ((initrd_pstart > addr) &&
++				    (initrd_pstart < (addr + size))) {
++					add_memory_region(addr,
++					                  initrd_pstart - addr,
++					                  BOOT_MEM_RAM);
++					rd_flag = 1;
++				}
++				if ((initrd_pend > addr) &&
++				    (initrd_pend < (addr + size))) {
++					add_memory_region(initrd_pend,
++						(addr + size) - initrd_pend,
++						 BOOT_MEM_RAM);
++					rd_flag = 1;
++				}
++			}
++#endif
++			if (!rd_flag) {
++				if (addr > MAX_RAM_SIZE)
++					continue;
++				if (addr+size > MAX_RAM_SIZE)
++					size = MAX_RAM_SIZE - (addr+size) + 1;
++				/*
++				 * memcpy/__copy_user prefetch, which
++				 * will cause a bus error for
++				 * KSEG/KUSEG addrs not backed by RAM.
++				 * Hence, reserve some padding for the
++				 * prefetch distance.
++				 */
++				if (size > 512)
++					size -= 512;
++				add_memory_region(addr, size, BOOT_MEM_RAM);
++			}
++			board_mem_region_addrs[board_mem_region_count] = addr;
++			board_mem_region_sizes[board_mem_region_count] = size;
++			board_mem_region_count++;
++			if (board_mem_region_count ==
++			    SIBYTE_MAX_MEM_REGIONS) {
++				/*
++				 * Too many regions.  Need to configure more
++				 */
++				while(1);
++			}
++		}
++	}
++#ifdef CONFIG_BLK_DEV_INITRD
++	if (initrd_start) {
++		add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
++				  BOOT_MEM_RESERVED);
++	}
++#endif
++}
++
++#ifdef CONFIG_BLK_DEV_INITRD
++static int __init initrd_setup(char *str)
++{
++	char rdarg[64];
++	int idx;
++	char *tmp, *endptr;
++	unsigned long initrd_size;
++
++	/* Make a copy of the initrd argument so we can smash it up here */
++	for (idx = 0; idx < sizeof(rdarg)-1; idx++) {
++		if (!str[idx] || (str[idx] == ' ')) break;
++		rdarg[idx] = str[idx];
++	}
++
++	rdarg[idx] = 0;
++	str = rdarg;
++
++	/*
++	 *Initrd location comes in the form "<hex size of ramdisk in bytes>@<location in memory>"
++	 *  e.g. initrd=3abfd@80010000.  This is set up by the loader.
++	 */
++	for (tmp = str; *tmp != '@'; tmp++) {
++		if (!*tmp) {
++			goto fail;
++		}
++	}
++	*tmp = 0;
++	tmp++;
++	if (!*tmp) {
++		goto fail;
++	}
++	initrd_size = simple_strtoul(str, &endptr, 16);
++	if (*endptr) {
++		*(tmp-1) = '@';
++		goto fail;
++	}
++	*(tmp-1) = '@';
++	initrd_start = simple_strtoul(tmp, &endptr, 16);
++	if (*endptr) {
++		goto fail;
++	}
++	initrd_end = initrd_start + initrd_size;
++	printk("Found initrd of %lx@%lx\n", initrd_size, initrd_start);
++	return 1;
++ fail:
++	printk("Bad initrd argument.  Disabling initrd\n");
++	initrd_start = 0;
++	initrd_end = 0;
++	return 1;
++}
++
++#endif
++
++extern struct plat_smp_ops sb_smp_ops;
++extern struct plat_smp_ops bcm1480_smp_ops;
++
++/*
++ * prom_init is called just after the cpu type is determined, from setup_arch()
++ */
++void __init prom_init(void)
++{
++	uint64_t cfe_ept, cfe_handle;
++	unsigned int cfe_eptseal;
++	int argc = fw_arg0;
++	char **envp = (char **) fw_arg2;
++	int *prom_vec = (int *) fw_arg3;
++
++	_machine_restart   = cfe_linux_restart;
++	_machine_halt      = cfe_linux_halt;
++	pm_power_off = cfe_linux_halt;
++
++	/*
++	 * Check if a loader was used; if NOT, the 4 arguments are
++	 * what CFE gives us (handle, 0, EPT and EPTSEAL)
++	 */
++	if (argc < 0) {
++		cfe_handle = (uint64_t)(long)argc;
++		cfe_ept = (long)envp;
++		cfe_eptseal = (uint32_t)(unsigned long)prom_vec;
++	} else {
++		if ((int32_t)(long)prom_vec < 0) {
++			/*
++			 * Old loader; all it gives us is the handle,
++			 * so use the "known" entrypoint and assume
++			 * the seal.
++			 */
++			cfe_handle = (uint64_t)(long)prom_vec;
++			cfe_ept = (uint64_t)((int32_t)0x9fc00500);
++			cfe_eptseal = CFE_EPTSEAL;
++		} else {
++			/*
++			 * Newer loaders bundle the handle/ept/eptseal
++			 * Note: prom_vec is in the loader's useg
++			 * which is still alive in the TLB.
++			 */
++			cfe_handle = (uint64_t)((int32_t *)prom_vec)[0];
++			cfe_ept = (uint64_t)((int32_t *)prom_vec)[2];
++			cfe_eptseal = (unsigned int)((uint32_t *)prom_vec)[3];
++		}
++	}
++	if (cfe_eptseal != CFE_EPTSEAL) {
++		/* too early for panic to do any good */
++		printk("CFE's entrypoint seal doesn't match. Spinning.");
++		while (1) ;
++	}
++	cfe_init(cfe_handle, cfe_ept);
++	/*
++	 * Get the handle for (at least) prom_putchar, possibly for
++	 * boot console
++	 */
++	cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
++	if (cfe_getenv("LINUX_CMDLINE", arcs_cmdline, CL_SIZE) < 0) {
++		if (argc < 0) {
++			/*
++			 * It's OK for direct boot to not provide a
++			 *  command line
++			 */
++			strcpy(arcs_cmdline, "root=/dev/ram0 ");
++		} else {
++			/* The loader should have set the command line */
++			/* too early for panic to do any good */
++			printk("LINUX_CMDLINE not defined in cfe.");
++			while (1) ;
++		}
++	}
++
++#ifdef CONFIG_BLK_DEV_INITRD
++	{
++		char *ptr;
++		/* Need to find out early whether we've got an initrd.  So scan
++		   the list looking now */
++		for (ptr = arcs_cmdline; *ptr; ptr++) {
++			while (*ptr == ' ') {
++				ptr++;
++			}
++			if (!strncmp(ptr, "initrd=", 7)) {
++				initrd_setup(ptr+7);
++				break;
++			} else {
++				while (*ptr && (*ptr != ' ')) {
++					ptr++;
++				}
++			}
++		}
++	}
++#endif /* CONFIG_BLK_DEV_INITRD */
++
++	/* Not sure this is needed, but it's the safe way. */
++	arcs_cmdline[CL_SIZE-1] = 0;
++
++	prom_meminit();
++
++#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
++	register_smp_ops(&sb_smp_ops);
++#endif
++#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
++	register_smp_ops(&bcm1480_smp_ops);
++#endif
++}
++
++void __init prom_free_prom_memory(void)
++{
++	/* Not sure what I'm supposed to do here.  Nothing, I think */
++}
++
++void prom_putchar(char c)
++{
++	int ret;
++
++	while ((ret = cfe_write(cfe_cons_handle, &c, 1)) == 0)
++		;
++}
+--- /dev/null
++++ b/arch/mips/sibyte/common/cfe_console.c
+@@ -0,0 +1,79 @@
++#include <linux/init.h>
++#include <linux/errno.h>
++#include <linux/console.h>
++
++#include <asm/sibyte/board.h>
++
++#include <asm/fw/cfe/cfe_api.h>
++#include <asm/fw/cfe/cfe_error.h>
++
++extern int cfe_cons_handle;
++
++static void cfe_console_write(struct console *cons, const char *str,
++		       unsigned int count)
++{
++	int i, last, written;
++
++	for (i=0, last=0; i<count; i++) {
++		if (!str[i])
++			/* XXXKW can/should this ever happen? */
++			return;
++		if (str[i] == '\n') {
++			do {
++				written = cfe_write(cfe_cons_handle, &str[last], i-last);
++				if (written < 0)
++					;
++				last += written;
++			} while (last < i);
++			while (cfe_write(cfe_cons_handle, "\r", 1) <= 0)
++				;
++		}
++	}
++	if (last != count) {
++		do {
++			written = cfe_write(cfe_cons_handle, &str[last], count-last);
++			if (written < 0)
++				;
++			last += written;
++		} while (last < count);
++	}
++
++}
++
++static int cfe_console_setup(struct console *cons, char *str)
++{
++	char consdev[32];
++	/* XXXKW think about interaction with 'console=' cmdline arg */
++	/* If none of the console options are configured, the build will break. */
++	if (cfe_getenv("BOOT_CONSOLE", consdev, 32) >= 0) {
++#ifdef CONFIG_SERIAL_SB1250_DUART
++		if (!strcmp(consdev, "uart0")) {
++			setleds("u0cn");
++		} else if (!strcmp(consdev, "uart1")) {
++			setleds("u1cn");
++#endif
++#ifdef CONFIG_VGA_CONSOLE
++		} else if (!strcmp(consdev, "pcconsole0")) {
++			setleds("pccn");
++#endif
++		} else
++			return -ENODEV;
++	}
++	return 0;
++}
++
++static struct console sb1250_cfe_cons = {
++	.name		= "cfe",
++	.write		= cfe_console_write,
++	.setup		= cfe_console_setup,
++	.flags		= CON_PRINTBUFFER,
++	.index		= -1,
++};
++
++static int __init sb1250_cfe_console_init(void)
++{
++	register_console(&sb1250_cfe_cons);
++	return 0;
++}
++
++console_initcall(sb1250_cfe_console_init);
+--- a/arch/mips/sibyte/common/Makefile
++++ b/arch/mips/sibyte/common/Makefile
+@@ -1,5 +1,5 @@
+-obj-y :=
+-
++obj-y := cfe.o
++obj-$(CONFIG_SIBYTE_CFE_CONSOLE)	+= cfe_console.o
+ obj-$(CONFIG_SIBYTE_TBPROF)		+= sb_tbprof.o
+ 
+ EXTRA_CFLAGS += -Werror
+--- a/arch/mips/sibyte/Kconfig
++++ b/arch/mips/sibyte/Kconfig
+@@ -75,6 +75,8 @@ config SIBYTE_SB1xxx_SOC
+ 	select SWAP_IO_SPACE
+ 	select SYS_SUPPORTS_32BIT_KERNEL
+ 	select SYS_SUPPORTS_64BIT_KERNEL
++	select CFE
++	select SYS_HAS_EARLY_PRINTK
+ 
+ choice
+ 	prompt "SiByte SOC Stepping"
+@@ -136,34 +138,14 @@ config SB1_CERR_STALL
+ 	bool "Stall (rather than panic) on fatal cache error"
+ 	depends on SIBYTE_SB1xxx_SOC
+ 
+-config SIBYTE_CFE
+-	bool "Booting from CFE"
+-	depends on SIBYTE_SB1xxx_SOC
+-	select CFE
+-	select SYS_HAS_EARLY_PRINTK
+-	help
+-	  Make use of the CFE API for enumerating available memory,
+-	  controlling secondary CPUs, and possibly console output.
+-
+ config SIBYTE_CFE_CONSOLE
+ 	bool "Use firmware console"
+-	depends on SIBYTE_CFE
++	depends on SIBYTE_SB1xxx_SOC
+ 	help
+ 	  Use the CFE API's console write routines during boot.  Other console
+ 	  options (VT console, sb1250 duart console, etc.) should not be
+ 	  configured.
+ 
+-config SIBYTE_STANDALONE
+-	bool
+-	depends on SIBYTE_SB1xxx_SOC && !SIBYTE_CFE
+-	select SYS_HAS_EARLY_PRINTK
+-	default y
+-
+-config SIBYTE_STANDALONE_RAM_SIZE
+-	int "Memory size (in megabytes)"
+-	depends on SIBYTE_STANDALONE
+-	default "32"
+-
+ config SIBYTE_BUS_WATCHER
+ 	bool "Support for Bus Watcher statistics"
+ 	depends on SIBYTE_SB1xxx_SOC
+--- a/arch/mips/sibyte/sb1250/Makefile
++++ b/arch/mips/sibyte/sb1250/Makefile
+@@ -1,7 +1,6 @@
+ obj-y := setup.o irq.o time.o
+ 
+ obj-$(CONFIG_SMP)			+= smp.o
+-obj-$(CONFIG_SIBYTE_STANDALONE)		+= prom.o
+ obj-$(CONFIG_SIBYTE_BUS_WATCHER)	+= bus_watcher.o
+ 
+ EXTRA_CFLAGS += -Werror
+--- a/arch/mips/sibyte/sb1250/prom.c
++++ /dev/null
+@@ -1,96 +0,0 @@
+-/*
+- * Copyright (C) 2000, 2001 Broadcom Corporation
+- *
+- * 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, write to the Free Software
+- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+- */
+-
+-#include <linux/init.h>
+-#include <linux/kernel.h>
+-#include <linux/mm.h>
+-#include <linux/blkdev.h>
+-#include <linux/bootmem.h>
+-#include <linux/smp.h>
+-#include <linux/initrd.h>
+-#include <linux/pm.h>
+-
+-#include <asm/bootinfo.h>
+-#include <asm/reboot.h>
+-
+-#define MAX_RAM_SIZE ((CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024) - 1)
+-
+-static __init void prom_meminit(void)
+-{
+-#ifdef CONFIG_BLK_DEV_INITRD
+-	unsigned long initrd_pstart;
+-	unsigned long initrd_pend;
+-
+-	initrd_pstart = __pa(initrd_start);
+-	initrd_pend = __pa(initrd_end);
+-	if (initrd_start &&
+-	    ((initrd_pstart > MAX_RAM_SIZE)
+-	     || (initrd_pend > MAX_RAM_SIZE))) {
+-		panic("initrd out of addressable memory");
+-	}
+-
+-	add_memory_region(0, initrd_pstart,
+-			  BOOT_MEM_RAM);
+-	add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
+-			  BOOT_MEM_RESERVED);
+-	add_memory_region(initrd_pend,
+-			  (CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024) - initrd_pend,
+-			  BOOT_MEM_RAM);
+-#else
+-	add_memory_region(0, CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024,
+-			  BOOT_MEM_RAM);
+-#endif
+-}
+-
+-void prom_cpu0_exit(void *unused)
+-{
+-        while (1) ;
+-}
+-
+-static void prom_linux_exit(void)
+-{
+-#ifdef CONFIG_SMP
+-	if (smp_processor_id()) {
+-		smp_call_function(prom_cpu0_exit, NULL, 1);
+-	}
+-#endif
+-	while(1);
+-}
+-
+-/*
+- * prom_init is called just after the cpu type is determined, from setup_arch()
+- */
+-void __init prom_init(void)
+-{
+-	_machine_restart   = (void (*)(char *))prom_linux_exit;
+-	_machine_halt      = prom_linux_exit;
+-	pm_power_off = prom_linux_exit;
+-
+-	strcpy(arcs_cmdline, "root=/dev/ram0 ");
+-
+-	prom_meminit();
+-}
+-
+-void __init prom_free_prom_memory(void)
+-{
+-	/* Not sure what I'm supposed to do here.  Nothing, I think */
+-}
+-
+-void prom_putchar(char c)
+-{
+-}
+--- a/arch/mips/sibyte/swarm/setup.c
++++ b/arch/mips/sibyte/swarm/setup.c
+@@ -136,16 +136,6 @@ void __init plat_mem_setup(void)
+ 	if (m41t81_probe())
+ 		swarm_rtc_type = RTC_M4LT81;
+ 
+-	printk("This kernel optimized for "
+-	       "board"
+-	       " runs "
+-#ifdef CONFIG_SIBYTE_CFE
+-	       "with"
+-#else
+-	       "without"
+-#endif
+-	       " CFE\n");
+-
+ #ifdef CONFIG_VT
+ 	screen_info = (struct screen_info) {
+ 		0, 0,           /* orig-x, orig-y */
diff --git a/target/linux/sibyte/patches/100-honuor_config_cmdline.patch b/target/linux/sibyte/patches/100-honuor_config_cmdline.patch
index b2af916..1c3545f 100644
--- a/target/linux/sibyte/patches/100-honuor_config_cmdline.patch
+++ b/target/linux/sibyte/patches/100-honuor_config_cmdline.patch
@@ -1,5 +1,10 @@
---- a/arch/mips/sibyte/cfe/setup.c
-+++ b/arch/mips/sibyte/cfe/setup.c
+The SiByte platform code doesn't honor the CONFIG_CMDLINE kernel
+option. This patch fixes this issue.
+
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+
+--- a/arch/mips/sibyte/common/cfe.c
++++ b/arch/mips/sibyte/common/cfe.c
 @@ -293,7 +293,11 @@ void __init prom_init(void)
  			 * It's OK for direct boot to not provide a
  			 *  command line
diff --git a/target/linux/sibyte/patches/104-sibyte_rtc_cleanup.patch b/target/linux/sibyte/patches/104-sibyte_rtc_cleanup.patch
index ca755f3..e4bd8bc 100644
--- a/target/linux/sibyte/patches/104-sibyte_rtc_cleanup.patch
+++ b/target/linux/sibyte/patches/104-sibyte_rtc_cleanup.patch
@@ -526,6 +526,6 @@
 -	if (m41t81_probe())
 -		swarm_rtc_type = RTC_M4LT81;
 -
- 	printk("This kernel optimized for "
- #ifdef CONFIG_SIMULATION
- 	       "simulation"
+ #ifdef CONFIG_VT
+ 	screen_info = (struct screen_info) {
+ 		0, 0,           /* orig-x, orig-y */
diff --git a/target/linux/sibyte/patches/105-sibyte_hwmon.patch b/target/linux/sibyte/patches/105-sibyte_hwmon.patch
new file mode 100644
index 0000000..a5657b9
--- /dev/null
+++ b/target/linux/sibyte/patches/105-sibyte_hwmon.patch
@@ -0,0 +1,23 @@
+--- a/arch/mips/sibyte/swarm/swarm-i2c.c
++++ b/arch/mips/sibyte/swarm/swarm-i2c.c
+@@ -15,6 +15,11 @@
+ #include <linux/init.h>
+ #include <linux/kernel.h>
+ 
++static struct i2c_board_info swarm_i2c_info0[] __initdata = {
++	{
++		I2C_BOARD_INFO("lm90", 0x2a),
++	},
++};
+ 
+ static struct i2c_board_info swarm_i2c_info1[] __initdata = {
+ 	{
+@@ -26,6 +31,8 @@ static int __init swarm_i2c_init(void)
+ {
+ 	int err;
+ 
++	err = i2c_register_board_info(0, swarm_i2c_info0,
++				      ARRAY_SIZE(swarm_i2c_info0));
+ 	err = i2c_register_board_info(1, swarm_i2c_info1,
+ 				      ARRAY_SIZE(swarm_i2c_info1));
+ 	if (err < 0)