* 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>
#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 <linux/module.h>
#include <asm/uaccess.h>
#include <asm/io.h>
+#include <asm/page.h>
#include <asm/sections.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/clock.h>
+#include <asm/mmu_context.h>
extern void * __rd_start, * __rd_end;
* The bigger value means no problem.
*/
struct sh_cpuinfo boot_cpu_data = { CPU_SH_NONE, 10000000, };
+
+/*
+ * The machine vector. First entry in .machvec.init, or clobbered by
+ * sh_mv= on the command line, prior to .machvec.init teardown.
+ */
+struct sh_machine_vector sh_mv = { .mv_name = "generic", };
+
#ifdef CONFIG_VT
struct screen_info screen_info;
#endif
-#if defined(CONFIG_SH_UNKNOWN)
-struct sh_machine_vector sh_mv;
-#endif
-
extern int root_mountflags;
-#define MV_NAME_SIZE 32
-
-static struct sh_machine_vector* __init get_mv_byname(const char* name);
-
/*
* This is set up by the setup-routine at boot-time
*/
static struct resource code_resource = { .name = "Kernel code", };
static struct resource data_resource = { .name = "Kernel data", };
-unsigned long memory_start, memory_end;
+unsigned long memory_start;
+EXPORT_SYMBOL(memory_start);
-static inline void parse_cmdline (char ** cmdline_p, char mv_name[MV_NAME_SIZE],
- struct sh_machine_vector** mvp,
- unsigned long *mv_io_base)
-{
- char c = ' ', *to = command_line, *from = COMMAND_LINE;
- int len = 0;
+unsigned long memory_end;
+EXPORT_SYMBOL(memory_end);
- /* Save unparsed command line copy for /proc/cmdline */
- memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
- boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
+static int __init early_parse_mem(char *p)
+{
+ unsigned long size;
memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
- memory_end = memory_start + __MEMORY_SIZE;
+ size = memparse(p, &p);
+ memory_end = memory_start + size;
- for (;;) {
- /*
- * "mem=XXX[kKmM]" defines a size of memory.
- */
- if (c == ' ' && !memcmp(from, "mem=", 4)) {
- if (to != command_line)
- to--;
- {
- unsigned long mem_size;
-
- mem_size = memparse(from+4, &from);
- memory_end = memory_start + mem_size;
- }
- }
-
- if (c == ' ' && !memcmp(from, "sh_mv=", 6)) {
- char* mv_end;
- char* mv_comma;
- int mv_len;
- if (to != command_line)
- to--;
- from += 6;
- mv_end = strchr(from, ' ');
- if (mv_end == NULL)
- mv_end = from + strlen(from);
-
- mv_comma = strchr(from, ',');
- if ((mv_comma != NULL) && (mv_comma < mv_end)) {
- int ints[3];
- get_options(mv_comma+1, ARRAY_SIZE(ints), ints);
- *mv_io_base = ints[1];
- mv_len = mv_comma - from;
- } else {
- mv_len = mv_end - from;
- }
- if (mv_len > (MV_NAME_SIZE-1))
- mv_len = MV_NAME_SIZE-1;
- memcpy(mv_name, from, mv_len);
- mv_name[mv_len] = '\0';
- from = mv_end;
-
- *mvp = get_mv_byname(mv_name);
- }
-
- c = *(from++);
- if (!c)
- break;
- if (COMMAND_LINE_SIZE <= ++len)
- break;
- *(to++) = c;
- }
- *to = '\0';
- *cmdline_p = command_line;
+ return 0;
}
+early_param("mem", early_parse_mem);
-static int __init sh_mv_setup(char **cmdline_p)
+/*
+ * Register fully available low RAM pages with the bootmem allocator.
+ */
+static void __init register_bootmem_low_pages(void)
{
-#ifdef CONFIG_SH_UNKNOWN
- extern struct sh_machine_vector mv_unknown;
-#endif
- struct sh_machine_vector *mv = NULL;
- char mv_name[MV_NAME_SIZE] = "";
- unsigned long mv_io_base = 0;
-
- parse_cmdline(cmdline_p, mv_name, &mv, &mv_io_base);
-
-#ifdef CONFIG_SH_UNKNOWN
- if (mv == NULL) {
- mv = &mv_unknown;
- if (*mv_name != '\0') {
- printk("Warning: Unsupported machine %s, using unknown\n",
- mv_name);
- }
- }
- sh_mv = *mv;
-#endif
+ unsigned long curr_pfn, last_pfn, pages;
/*
- * Manually walk the vec, fill in anything that the board hasn't yet
- * by hand, wrapping to the generic implementation.
+ * We are rounding up the start address of usable memory:
*/
-#define mv_set(elem) do { \
- if (!sh_mv.mv_##elem) \
- sh_mv.mv_##elem = generic_##elem; \
-} while (0)
-
- mv_set(inb); mv_set(inw); mv_set(inl);
- mv_set(outb); mv_set(outw); mv_set(outl);
-
- mv_set(inb_p); mv_set(inw_p); mv_set(inl_p);
- mv_set(outb_p); mv_set(outw_p); mv_set(outl_p);
-
- mv_set(insb); mv_set(insw); mv_set(insl);
- mv_set(outsb); mv_set(outsw); mv_set(outsl);
+ curr_pfn = PFN_UP(__MEMORY_START);
- mv_set(readb); mv_set(readw); mv_set(readl);
- mv_set(writeb); mv_set(writew); mv_set(writel);
-
- mv_set(ioport_map);
- mv_set(ioport_unmap);
- mv_set(irq_demux);
-
-#ifdef CONFIG_SH_UNKNOWN
- __set_io_port_base(mv_io_base);
-#endif
+ /*
+ * ... and at the end of the usable range downwards:
+ */
+ last_pfn = PFN_DOWN(__pa(memory_end));
- if (!sh_mv.mv_nr_irqs)
- sh_mv.mv_nr_irqs = NR_IRQS;
+ if (last_pfn > max_low_pfn)
+ last_pfn = max_low_pfn;
- return 0;
+ pages = last_pfn - curr_pfn;
+ free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
}
-void __init setup_arch(char **cmdline_p)
+void __init setup_bootmem_allocator(unsigned long free_pfn)
{
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);
-
-
- /*
- * 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;
-
- /*
- * Partially used pages are not usable - thus
- * we are rounding upwards:
- */
- start_pfn = PFN_UP(__pa(_end));
/*
* Find a proper area for the bootmem bitmap. After this
* bootstrap step all allocations (until the page allocator
* 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));
-
- 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));
- }
+ bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn,
+ min_low_pfn, max_low_pfn);
+
+ add_active_range(0, min_low_pfn, max_low_pfn);
+ register_bootmem_low_pages();
+ node_set_online(0);
/*
* Reserve the kernel text and
* case of us accidentally initializing the bootmem allocator with
* an invalid RAM area.
*/
- reserve_bootmem_node(NODE_DATA(0), __MEMORY_START+PAGE_SIZE,
- (PFN_PHYS(start_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
+ reserve_bootmem(__MEMORY_START+PAGE_SIZE,
+ (PFN_PHYS(free_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);
+
+ sparse_memory_present_with_active_regions(0);
#ifdef CONFIG_BLK_DEV_INITRD
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
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;
}
}
#endif
-
-#ifdef CONFIG_DUMMY_CONSOLE
- conswitchp = &dummy_con;
+#ifdef CONFIG_KEXEC
+ if (crashk_res.start != crashk_res.end)
+ reserve_bootmem(crashk_res.start,
+ crashk_res.end - crashk_res.start + 1);
#endif
+}
- /* Perform the machine specific initialisation */
- if (likely(sh_mv.mv_setup))
- sh_mv.mv_setup(cmdline_p);
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+static void __init setup_memory(void)
+{
+ unsigned long start_pfn;
- paging_init();
+ /*
+ * 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
-struct sh_machine_vector* __init get_mv_byname(const char* name)
+void __init setup_arch(char **cmdline_p)
{
- extern long __machvec_start, __machvec_end;
- struct sh_machine_vector *all_vecs =
- (struct sh_machine_vector *)&__machvec_start;
-
- int i, n = ((unsigned long)&__machvec_end
- - (unsigned long)&__machvec_start)/
- sizeof(struct sh_machine_vector);
-
- for (i = 0; i < n; ++i) {
- struct sh_machine_vector *mv = &all_vecs[i];
- if (mv == NULL)
- continue;
- if (strcasecmp(name, get_system_type()) == 0) {
- return mv;
- }
- }
- return NULL;
-}
+ enable_mmu();
-static struct cpu cpu[NR_CPUS];
+ ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
-static int __init topology_init(void)
-{
- int cpu_id;
+#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;
- for_each_possible_cpu(cpu_id)
- register_cpu(&cpu[cpu_id], cpu_id);
+ 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;
- return 0;
-}
+ memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
+ memory_end = memory_start + __MEMORY_SIZE;
+
+#ifdef CONFIG_CMDLINE_BOOL
+ strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
+#else
+ strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
+#endif
+
+ /* Save unparsed command line copy for /proc/cmdline */
+ memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
+ *cmdline_p = command_line;
+
+ parse_early_param();
+
+ sh_mv_setup();
+
+ /*
+ * Find the highest page frame number we have available
+ */
+ max_pfn = PFN_DOWN(__pa(memory_end));
-subsys_initcall(topology_init);
+ /*
+ * Determine low and high memory ranges:
+ */
+ max_low_pfn = max_pfn;
+ min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
+
+ nodes_clear(node_online_map);
+
+ /* Setup bootmem with available RAM */
+ setup_memory();
+ sparse_init();
+
+#ifdef CONFIG_DUMMY_CONSOLE
+ conswitchp = &dummy_con;
+#endif
+
+ /* Perform the machine specific initialisation */
+ if (likely(sh_mv.mv_setup))
+ sh_mv.mv_setup(cmdline_p);
+
+ paging_init();
+}
static const char *cpu_name[] = {
[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
- [CPU_SH7604] = "SH7604", [CPU_SH7300] = "SH7300",
+ [CPU_SH7300] = "SH7300",
[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",
- [CPU_SH7760] = "SH7760", [CPU_SH73180] = "SH73180",
+ [CPU_SH7760] = "SH7760",
[CPU_ST40RA] = "ST40RA", [CPU_ST40GX1] = "ST40GX1",
[CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
[CPU_SH7770] = "SH7770", [CPU_SH7780] = "SH7780",
[CPU_SH7781] = "SH7781", [CPU_SH7343] = "SH7343",
[CPU_SH7785] = "SH7785", [CPU_SH7722] = "SH7722",
- [CPU_SH_NONE] = "Unknown"
+ [CPU_SHX3] = "SH-X3", [CPU_SH_NONE] = "Unknown"
};
const char *get_cpu_subtype(struct sh_cpuinfo *c)
/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
static const char *cpu_flags[] = {
"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
- "ptea", "llsc", "l2", NULL
+ "ptea", "llsc", "l2", "op32", NULL
};
static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
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)
projects / karo-tx-linux.git / blobdiff