#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/kexec.h>
+#include <linux/module.h>
+#include <linux/smp.h>
+#include <linux/err.h>
+#include <linux/debugfs.h>
+#include <linux/crash_dump.h>
+#include <linux/mmzone.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/lmb.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/page.h>
+#include <asm/elf.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;
-
-/*
- * Machine setup..
- */
-
/*
* Initialize loops_per_jiffy as 10000000 (1000MIPS).
* This value will be used at the very early stage of serial setup.
* The bigger value means no problem.
*/
-struct sh_cpuinfo boot_cpu_data = { CPU_SH_NONE, 10000000, };
+struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
+ [0] = {
+ .type = CPU_SH_NONE,
+ .family = CPU_FAMILY_UNKNOWN,
+ .loops_per_jiffy = 10000000,
+ },
+};
+EXPORT_SYMBOL(cpu_data);
/*
* 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", };
+EXPORT_SYMBOL(sh_mv);
#ifdef CONFIG_VT
struct screen_info screen_info;
extern int root_mountflags;
-/*
- * This is set up by the setup-routine at boot-time
- */
-#define PARAM ((unsigned char *)empty_zero_page)
-
-#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
-#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004))
-#define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008))
-#define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c))
-#define INITRD_START (*(unsigned long *) (PARAM+0x010))
-#define INITRD_SIZE (*(unsigned long *) (PARAM+0x014))
-/* ... */
-#define COMMAND_LINE ((char *) (PARAM+0x100))
-
#define RAMDISK_IMAGE_START_MASK 0x07FF
#define RAMDISK_PROMPT_FLAG 0x8000
#define RAMDISK_LOAD_FLAG 0x4000
static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
-static struct resource code_resource = { .name = "Kernel code", };
-static struct resource data_resource = { .name = "Kernel data", };
+static struct resource code_resource = {
+ .name = "Kernel code",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
+};
+
+static struct resource data_resource = {
+ .name = "Kernel data",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
+};
+
+static struct resource bss_resource = {
+ .name = "Kernel bss",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
+};
+
+unsigned long memory_start;
+EXPORT_SYMBOL(memory_start);
+unsigned long memory_end = 0;
+EXPORT_SYMBOL(memory_end);
-unsigned long memory_start, memory_end;
+static struct resource mem_resources[MAX_NUMNODES];
+
+int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
static int __init early_parse_mem(char *p)
{
unsigned long size;
- memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
+ memory_start = (unsigned long)__va(__MEMORY_START);
size = memparse(p, &p);
+
+ if (size > __MEMORY_SIZE) {
+ printk(KERN_ERR
+ "Using mem= to increase the size of kernel memory "
+ "is not allowed.\n"
+ " Recompile the kernel with the correct value for "
+ "CONFIG_MEMORY_SIZE.\n");
+ return 0;
+ }
+
memory_end = memory_start + size;
return 0;
free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
}
-void __init setup_bootmem_allocator(unsigned long start_pfn)
+#ifdef CONFIG_KEXEC
+static void __init reserve_crashkernel(void)
+{
+ unsigned long long free_mem;
+ unsigned long long crash_size, crash_base;
+ void *vp;
+ int ret;
+
+ free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT;
+
+ ret = parse_crashkernel(boot_command_line, free_mem,
+ &crash_size, &crash_base);
+ if (ret == 0 && crash_size) {
+ if (crash_base <= 0) {
+ vp = alloc_bootmem_nopanic(crash_size);
+ if (!vp) {
+ printk(KERN_INFO "crashkernel allocation "
+ "failed\n");
+ return;
+ }
+ crash_base = __pa(vp);
+ } else if (reserve_bootmem(crash_base, crash_size,
+ BOOTMEM_EXCLUSIVE) < 0) {
+ printk(KERN_INFO "crashkernel reservation failed - "
+ "memory is in use\n");
+ return;
+ }
+
+ printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
+ "for crashkernel (System RAM: %ldMB)\n",
+ (unsigned long)(crash_size >> 20),
+ (unsigned long)(crash_base >> 20),
+ (unsigned long)(free_mem >> 20));
+ crashk_res.start = crash_base;
+ crashk_res.end = crash_base + crash_size - 1;
+ insert_resource(&iomem_resource, &crashk_res);
+ }
+}
+#else
+static inline void __init reserve_crashkernel(void)
+{}
+#endif
+
+void __cpuinit calibrate_delay(void)
+{
+ struct clk *clk = clk_get(NULL, "cpu_clk");
+
+ if (IS_ERR(clk))
+ panic("Need a sane CPU clock definition!");
+
+ loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;
+
+ printk(KERN_INFO "Calibrating delay loop (skipped)... "
+ "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
+ loops_per_jiffy/(500000/HZ),
+ (loops_per_jiffy/(5000/HZ)) % 100,
+ loops_per_jiffy);
+}
+
+void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
+ unsigned long end_pfn)
+{
+ struct resource *res = &mem_resources[nid];
+
+ WARN_ON(res->name); /* max one active range per node for now */
+
+ res->name = "System RAM";
+ res->start = start_pfn << PAGE_SHIFT;
+ res->end = (end_pfn << PAGE_SHIFT) - 1;
+ res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ if (request_resource(&iomem_resource, res)) {
+ pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
+ start_pfn, end_pfn);
+ return;
+ }
+
+ /*
+ * We don't know which RAM region contains kernel data,
+ * so we try it repeatedly and let the resource manager
+ * test it.
+ */
+ request_resource(res, &code_resource);
+ request_resource(res, &data_resource);
+ request_resource(res, &bss_resource);
+
+ add_active_range(nid, start_pfn, end_pfn);
+}
+
+void __init setup_bootmem_allocator(unsigned long free_pfn)
{
unsigned long bootmap_size;
+ unsigned long bootmap_pages, bootmem_paddr;
+ u64 total_pages = (lmb_end_of_DRAM() - __MEMORY_START) >> PAGE_SHIFT;
+ int i;
+
+ bootmap_pages = bootmem_bootmap_pages(total_pages);
+
+ bootmem_paddr = lmb_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE);
/*
* 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,
+ bootmap_size = init_bootmem_node(NODE_DATA(0),
+ bootmem_paddr >> PAGE_SHIFT,
min_low_pfn, max_low_pfn);
- add_active_range(0, min_low_pfn, max_low_pfn);
- register_bootmem_low_pages();
-
- node_set_online(0);
+ /* Add active regions with valid PFNs. */
+ for (i = 0; i < lmb.memory.cnt; i++) {
+ unsigned long start_pfn, end_pfn;
+ start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT;
+ end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i);
+ __add_active_range(0, start_pfn, end_pfn);
+ }
/*
- * Reserve the kernel text and
- * Reserve the bootmem bitmap. We do this in two steps (first step
- * was init_bootmem()), because this catches the (definitely buggy)
- * case of us accidentally initializing the bootmem allocator with
- * an invalid RAM area.
+ * Add all physical memory to the bootmem map and mark each
+ * area as present.
*/
- reserve_bootmem(__MEMORY_START+PAGE_SIZE,
- (PFN_PHYS(start_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
+ register_bootmem_low_pages();
- /*
- * reserve physical page 0 - it's a special BIOS page on many boxes,
- * enabling clean reboots, SMP operation, laptop functions.
- */
- reserve_bootmem(__MEMORY_START, PAGE_SIZE);
+ /* Reserve the sections we're already using. */
+ for (i = 0; i < lmb.reserved.cnt; i++)
+ reserve_bootmem(lmb.reserved.region[i].base,
+ lmb_size_bytes(&lmb.reserved, i),
+ BOOTMEM_DEFAULT);
+
+ node_set_online(0);
+
+ sparse_memory_present_with_active_regions(0);
#ifdef CONFIG_BLK_DEV_INITRD
- ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
- if (&__rd_start != &__rd_end) {
- LOADER_TYPE = 1;
- INITRD_START = PHYSADDR((unsigned long)&__rd_start) -
- __MEMORY_START;
- INITRD_SIZE = (unsigned long)&__rd_end -
- (unsigned long)&__rd_start;
- }
+ ROOT_DEV = Root_RAM0;
if (LOADER_TYPE && INITRD_START) {
- if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
- reserve_bootmem(INITRD_START + __MEMORY_START,
- INITRD_SIZE);
- initrd_start = INITRD_START + PAGE_OFFSET +
- __MEMORY_START;
+ unsigned long initrd_start_phys = INITRD_START + __MEMORY_START;
+
+ if (initrd_start_phys + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) {
+ reserve_bootmem(initrd_start_phys, INITRD_SIZE,
+ BOOTMEM_DEFAULT);
+ initrd_start = (unsigned long)__va(initrd_start_phys);
initrd_end = initrd_start + INITRD_SIZE;
} else {
printk("initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- INITRD_START + INITRD_SIZE,
- max_low_pfn << PAGE_SHIFT);
+ "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
+ initrd_start_phys + INITRD_SIZE,
+ (unsigned long)PFN_PHYS(max_low_pfn));
initrd_start = 0;
}
}
#endif
-#ifdef CONFIG_KEXEC
- if (crashk_res.start != crashk_res.end)
- reserve_bootmem(crashk_res.start,
- crashk_res.end - crashk_res.start + 1);
-#endif
+
+ reserve_crashkernel();
}
#ifndef CONFIG_NEED_MULTIPLE_NODES
static void __init setup_memory(void)
{
unsigned long start_pfn;
+ u64 base = min_low_pfn << PAGE_SHIFT;
+ u64 size = (max_low_pfn << PAGE_SHIFT) - base;
/*
* Partially used pages are not usable - thus
* we are rounding upwards:
*/
start_pfn = PFN_UP(__pa(_end));
+
+ lmb_add(base, size);
+
+ /*
+ * Reserve the kernel text and
+ * Reserve the bootmem bitmap. We do this in two steps (first step
+ * was init_bootmem()), because this catches the (definitely buggy)
+ * case of us accidentally initializing the bootmem allocator with
+ * an invalid RAM area.
+ */
+ lmb_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET,
+ (PFN_PHYS(start_pfn) + PAGE_SIZE - 1) -
+ (__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET));
+
+ /*
+ * Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
+ */
+ if (CONFIG_ZERO_PAGE_OFFSET != 0)
+ lmb_reserve(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET);
+
+ lmb_analyze();
+ lmb_dump_all();
+
setup_bootmem_allocator(start_pfn);
- sparse_memory_present_with_active_regions(0);
}
#else
extern void __init setup_memory(void);
#endif
+/*
+ * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
+ * is_kdump_kernel() to determine if we are booting after a panic. Hence
+ * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE.
+ */
+#ifdef CONFIG_CRASH_DUMP
+/* elfcorehdr= specifies the location of elf core header
+ * stored by the crashed kernel.
+ */
+static int __init parse_elfcorehdr(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+ elfcorehdr_addr = memparse(arg, &arg);
+ return 0;
+}
+early_param("elfcorehdr", parse_elfcorehdr);
+#endif
+
+void __init __attribute__ ((weak)) plat_early_device_setup(void)
+{
+}
+
void __init setup_arch(char **cmdline_p)
{
enable_mmu();
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
+ printk(KERN_NOTICE "Boot params:\n"
+ "... MOUNT_ROOT_RDONLY - %08lx\n"
+ "... RAMDISK_FLAGS - %08lx\n"
+ "... ORIG_ROOT_DEV - %08lx\n"
+ "... LOADER_TYPE - %08lx\n"
+ "... INITRD_START - %08lx\n"
+ "... INITRD_SIZE - %08lx\n",
+ MOUNT_ROOT_RDONLY, RAMDISK_FLAGS,
+ ORIG_ROOT_DEV, LOADER_TYPE,
+ INITRD_START, INITRD_SIZE);
+
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
code_resource.end = virt_to_phys(_etext)-1;
data_resource.start = virt_to_phys(_etext);
data_resource.end = virt_to_phys(_edata)-1;
+ bss_resource.start = virt_to_phys(__bss_start);
+ bss_resource.end = virt_to_phys(_ebss)-1;
- memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
- memory_end = memory_start + __MEMORY_SIZE;
+ memory_start = (unsigned long)__va(__MEMORY_START);
+ if (!memory_end)
+ memory_end = memory_start + __MEMORY_SIZE;
-#ifdef CONFIG_CMDLINE_BOOL
+#ifdef CONFIG_CMDLINE_OVERWRITE
strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
#else
strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
+#ifdef CONFIG_CMDLINE_EXTEND
+ strlcat(command_line, " ", sizeof(command_line));
+ strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
+#endif
#endif
/* Save unparsed command line copy for /proc/cmdline */
parse_early_param();
+ plat_early_device_setup();
+
+ /* Let earlyprintk output early console messages */
+ early_platform_driver_probe("earlyprintk", 1, 1);
+
sh_mv_setup();
/*
nodes_clear(node_online_map);
/* Setup bootmem with available RAM */
+ lmb_init();
setup_memory();
sparse_init();
sh_mv.mv_setup(cmdline_p);
paging_init();
+
+#ifdef CONFIG_PMB_ENABLE
+ pmb_init();
+#endif
+
+#ifdef CONFIG_SMP
+ plat_smp_setup();
+#endif
+}
+
+/* processor boot mode configuration */
+int generic_mode_pins(void)
+{
+ pr_warning("generic_mode_pins(): missing mode pin configuration\n");
+ return 0;
+}
+
+int test_mode_pin(int pin)
+{
+ return sh_mv.mv_mode_pins() & pin;
}
static const char *cpu_name[] = {
+ [CPU_SH7201] = "SH7201",
+ [CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263",
[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
- [CPU_SH7604] = "SH7604", [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_ST40RA] = "ST40RA", [CPU_ST40GX1] = "ST40GX1",
+ [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720",
+ [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729",
+ [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S",
+ [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751",
+ [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760",
[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_SH7763] = "SH7763", [CPU_SH7770] = "SH7770",
+ [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781",
+ [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785",
+ [CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757",
+ [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3",
+ [CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
+ [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723",
+ [CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724",
[CPU_SH_NONE] = "Unknown"
};
{
return cpu_name[c->type];
}
+EXPORT_SYMBOL(get_cpu_subtype);
#ifdef CONFIG_PROC_FS
/* 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", "op32", NULL
+ "ptea", "llsc", "l2", "op32", "pteaex", NULL
};
static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
if (cpu == 0)
seq_printf(m, "machine\t\t: %s\n", get_system_type());
+ else
+ seq_printf(m, "\n");
seq_printf(m, "processor\t: %d\n", cpu);
seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
+ if (c->cut_major == -1)
+ seq_printf(m, "cut\t\t: unknown\n");
+ else if (c->cut_minor == -1)
+ seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
+ else
+ seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
show_cpuflags(m, c);
static void c_stop(struct seq_file *m, void *v)
{
}
-struct seq_operations cpuinfo_op = {
+const struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
.show = show_cpuinfo,
};
#endif /* CONFIG_PROC_FS */
+
+struct dentry *sh_debugfs_root;
+
+static int __init sh_debugfs_init(void)
+{
+ sh_debugfs_root = debugfs_create_dir("sh", NULL);
+ if (!sh_debugfs_root)
+ return -ENOMEM;
+ if (IS_ERR(sh_debugfs_root))
+ return PTR_ERR(sh_debugfs_root);
+
+ return 0;
+}
+arch_initcall(sh_debugfs_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff