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authorPaul Mackerras <paulus@samba.org>2007-05-08 13:37:51 +1000
committerPaul Mackerras <paulus@samba.org>2007-05-08 13:37:51 +1000
commit02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1 (patch)
tree04ef573cd4de095c500c9fc3477f4278c0b36300 /arch/sh/kernel/setup.c
parent7487a2245b8841c77ba9db406cf99a483b9334e9 (diff)
parent5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff)
Merge branch 'linux-2.6'
Diffstat (limited to 'arch/sh/kernel/setup.c')
-rw-r--r--arch/sh/kernel/setup.c267
1 files changed, 104 insertions, 163 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 98802ab28211..477d2a854fc4 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -4,7 +4,7 @@
* This file handles the architecture-dependent parts of initialization
*
* Copyright (C) 1999 Niibe Yutaka
- * Copyright (C) 2002 - 2006 Paul Mundt
+ * Copyright (C) 2002 - 2007 Paul Mundt
*/
#include <linux/screen_info.h>
#include <linux/ioport.h>
@@ -15,21 +15,22 @@
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/utsname.h>
+#include <linux/nodemask.h>
#include <linux/cpu.h>
#include <linux/pfn.h>
#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/kexec.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/sections.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/clock.h>
+#include <asm/mmu_context.h>
-#ifdef CONFIG_SH_KGDB
-#include <asm/kgdb.h>
-static int kgdb_parse_options(char *options);
-#endif
extern void * __rd_start, * __rd_end;
+
/*
* Machine setup..
*/
@@ -205,53 +206,33 @@ static int __init sh_mv_setup(char **cmdline_p)
return 0;
}
-void __init setup_arch(char **cmdline_p)
+/*
+ * Register fully available low RAM pages with the bootmem allocator.
+ */
+static void __init register_bootmem_low_pages(void)
{
- unsigned long bootmap_size;
- unsigned long start_pfn, max_pfn, max_low_pfn;
-
-#ifdef CONFIG_CMDLINE_BOOL
- strcpy(COMMAND_LINE, CONFIG_CMDLINE);
-#endif
-
- ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
-
-#ifdef CONFIG_BLK_DEV_RAM
- rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
- rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
- rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
-#endif
-
- if (!MOUNT_ROOT_RDONLY)
- root_mountflags &= ~MS_RDONLY;
- init_mm.start_code = (unsigned long) _text;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
- init_mm.brk = (unsigned long) _end;
-
- code_resource.start = (unsigned long)virt_to_phys(_text);
- code_resource.end = (unsigned long)virt_to_phys(_etext)-1;
- data_resource.start = (unsigned long)virt_to_phys(_etext);
- data_resource.end = (unsigned long)virt_to_phys(_edata)-1;
-
- sh_mv_setup(cmdline_p);
-
+ unsigned long curr_pfn, last_pfn, pages;
/*
- * Find the highest page frame number we have available
+ * We are rounding up the start address of usable memory:
*/
- max_pfn = PFN_DOWN(__pa(memory_end));
+ curr_pfn = PFN_UP(__MEMORY_START);
/*
- * Determine low and high memory ranges:
+ * ... and at the end of the usable range downwards:
*/
- max_low_pfn = max_pfn;
+ last_pfn = PFN_DOWN(__pa(memory_end));
- /*
- * Partially used pages are not usable - thus
- * we are rounding upwards:
- */
- start_pfn = PFN_UP(__pa(_end));
+ if (last_pfn > max_low_pfn)
+ last_pfn = max_low_pfn;
+
+ pages = last_pfn - curr_pfn;
+ free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
+}
+
+void __init setup_bootmem_allocator(unsigned long start_pfn)
+{
+ unsigned long bootmap_size;
/*
* Find a proper area for the bootmem bitmap. After this
@@ -259,31 +240,11 @@ void __init setup_arch(char **cmdline_p)
* is intact) must be done via bootmem_alloc().
*/
bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
- __MEMORY_START>>PAGE_SHIFT,
- max_low_pfn);
- /*
- * Register fully available low RAM pages with the bootmem allocator.
- */
- {
- unsigned long curr_pfn, last_pfn, pages;
-
- /*
- * We are rounding up the start address of usable memory:
- */
- curr_pfn = PFN_UP(__MEMORY_START);
- /*
- * ... and at the end of the usable range downwards:
- */
- last_pfn = PFN_DOWN(__pa(memory_end));
+ min_low_pfn, max_low_pfn);
- if (last_pfn > max_low_pfn)
- last_pfn = max_low_pfn;
-
- pages = last_pfn - curr_pfn;
- free_bootmem_node(NODE_DATA(0), PFN_PHYS(curr_pfn),
- PFN_PHYS(pages));
- }
+ register_bootmem_low_pages();
+ node_set_online(0);
/*
* Reserve the kernel text and
@@ -292,14 +253,14 @@ void __init setup_arch(char **cmdline_p)
* case of us accidentally initializing the bootmem allocator with
* an invalid RAM area.
*/
- reserve_bootmem_node(NODE_DATA(0), __MEMORY_START+PAGE_SIZE,
+ reserve_bootmem(__MEMORY_START+PAGE_SIZE,
(PFN_PHYS(start_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
* enabling clean reboots, SMP operation, laptop functions.
*/
- reserve_bootmem_node(NODE_DATA(0), __MEMORY_START, PAGE_SIZE);
+ reserve_bootmem(__MEMORY_START, PAGE_SIZE);
#ifdef CONFIG_BLK_DEV_INITRD
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
@@ -313,8 +274,8 @@ void __init setup_arch(char **cmdline_p)
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
- reserve_bootmem_node(NODE_DATA(0), INITRD_START +
- __MEMORY_START, INITRD_SIZE);
+ reserve_bootmem(INITRD_START + __MEMORY_START,
+ INITRD_SIZE);
initrd_start = INITRD_START + PAGE_OFFSET +
__MEMORY_START;
initrd_end = initrd_start + INITRD_SIZE;
@@ -327,6 +288,76 @@ void __init setup_arch(char **cmdline_p)
}
}
#endif
+#ifdef CONFIG_KEXEC
+ if (crashk_res.start != crashk_res.end)
+ reserve_bootmem(crashk_res.start,
+ crashk_res.end - crashk_res.start + 1);
+#endif
+}
+
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+static void __init setup_memory(void)
+{
+ unsigned long start_pfn;
+
+ /*
+ * Partially used pages are not usable - thus
+ * we are rounding upwards:
+ */
+ start_pfn = PFN_UP(__pa(_end));
+ setup_bootmem_allocator(start_pfn);
+}
+#else
+extern void __init setup_memory(void);
+#endif
+
+void __init setup_arch(char **cmdline_p)
+{
+ enable_mmu();
+
+#ifdef CONFIG_CMDLINE_BOOL
+ strcpy(COMMAND_LINE, CONFIG_CMDLINE);
+#endif
+
+ ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
+
+#ifdef CONFIG_BLK_DEV_RAM
+ rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
+ rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
+ rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
+#endif
+
+ if (!MOUNT_ROOT_RDONLY)
+ root_mountflags &= ~MS_RDONLY;
+ init_mm.start_code = (unsigned long) _text;
+ init_mm.end_code = (unsigned long) _etext;
+ init_mm.end_data = (unsigned long) _edata;
+ init_mm.brk = (unsigned long) _end;
+
+ code_resource.start = virt_to_phys(_text);
+ code_resource.end = virt_to_phys(_etext)-1;
+ data_resource.start = virt_to_phys(_etext);
+ data_resource.end = virt_to_phys(_edata)-1;
+
+ parse_early_param();
+
+ sh_mv_setup(cmdline_p);
+
+ /*
+ * Find the highest page frame number we have available
+ */
+ max_pfn = PFN_DOWN(__pa(memory_end));
+
+ /*
+ * Determine low and high memory ranges:
+ */
+ max_low_pfn = max_pfn;
+ min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
+
+ nodes_clear(node_online_map);
+ setup_memory();
+ paging_init();
+ sparse_init();
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
@@ -335,8 +366,6 @@ void __init setup_arch(char **cmdline_p)
/* Perform the machine specific initialisation */
if (likely(sh_mv.mv_setup))
sh_mv.mv_setup(cmdline_p);
-
- paging_init();
}
struct sh_machine_vector* __init get_mv_byname(const char* name)
@@ -380,6 +409,7 @@ static const char *cpu_name[] = {
[CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
[CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
[CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
+ [CPU_SH7712] = "SH7712",
[CPU_SH7729] = "SH7729", [CPU_SH7750] = "SH7750",
[CPU_SH7750S] = "SH7750S", [CPU_SH7750R] = "SH7750R",
[CPU_SH7751] = "SH7751", [CPU_SH7751R] = "SH7751R",
@@ -477,7 +507,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
c->loops_per_jiffy/(500000/HZ),
(c->loops_per_jiffy/(5000/HZ)) % 100);
- return show_clocks(m);
+ return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
@@ -499,92 +529,3 @@ struct seq_operations cpuinfo_op = {
.show = show_cpuinfo,
};
#endif /* CONFIG_PROC_FS */
-
-#ifdef CONFIG_SH_KGDB
-/*
- * Parse command-line kgdb options. By default KGDB is enabled,
- * entered on error (or other action) using default serial info.
- * The command-line option can include a serial port specification
- * and an action to override default or configured behavior.
- */
-struct kgdb_sermap kgdb_sci_sermap =
-{ "ttySC", 5, kgdb_sci_setup, NULL };
-
-struct kgdb_sermap *kgdb_serlist = &kgdb_sci_sermap;
-struct kgdb_sermap *kgdb_porttype = &kgdb_sci_sermap;
-
-void kgdb_register_sermap(struct kgdb_sermap *map)
-{
- struct kgdb_sermap *last;
-
- for (last = kgdb_serlist; last->next; last = last->next)
- ;
- last->next = map;
- if (!map->namelen) {
- map->namelen = strlen(map->name);
- }
-}
-
-static int __init kgdb_parse_options(char *options)
-{
- char c;
- int baud;
-
- /* Check for port spec (or use default) */
-
- /* Determine port type and instance */
- if (!memcmp(options, "tty", 3)) {
- struct kgdb_sermap *map = kgdb_serlist;
-
- while (map && memcmp(options, map->name, map->namelen))
- map = map->next;
-
- if (!map) {
- KGDB_PRINTK("unknown port spec in %s\n", options);
- return -1;
- }
-
- kgdb_porttype = map;
- kgdb_serial_setup = map->setup_fn;
- kgdb_portnum = options[map->namelen] - '0';
- options += map->namelen + 1;
-
- options = (*options == ',') ? options+1 : options;
-
- /* Read optional parameters (baud/parity/bits) */
- baud = simple_strtoul(options, &options, 10);
- if (baud != 0) {
- kgdb_baud = baud;
-
- c = toupper(*options);
- if (c == 'E' || c == 'O' || c == 'N') {
- kgdb_parity = c;
- options++;
- }
-
- c = *options;
- if (c == '7' || c == '8') {
- kgdb_bits = c;
- options++;
- }
- options = (*options == ',') ? options+1 : options;
- }
- }
-
- /* Check for action specification */
- if (!memcmp(options, "halt", 4)) {
- kgdb_halt = 1;
- options += 4;
- } else if (!memcmp(options, "disabled", 8)) {
- kgdb_enabled = 0;
- options += 8;
- }
-
- if (*options) {
- KGDB_PRINTK("ignored unknown options: %s\n", options);
- return 0;
- }
- return 1;
-}
-__setup("kgdb=", kgdb_parse_options);
-#endif /* CONFIG_SH_KGDB */