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Diffstat (limited to 'arch/sh/kernel/setup.c')
-rw-r--r--arch/sh/kernel/setup.c218
1 files changed, 44 insertions, 174 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index c27729135935..2cf7dec0d690 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -21,8 +21,10 @@
#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>
@@ -41,20 +43,19 @@ 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
*/
@@ -78,133 +79,23 @@ 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", };
-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';
-
- memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
- memory_end = memory_start + __MEMORY_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;
-}
-
-static int __init sh_mv_setup(char **cmdline_p)
+static int __init early_parse_mem(char *p)
{
-#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
-
- /*
- * Manually walk the vec, fill in anything that the board hasn't yet
- * by hand, wrapping to the generic implementation.
- */
-#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);
-
- mv_set(readb); mv_set(readw); mv_set(readl);
- mv_set(writeb); mv_set(writew); mv_set(writel);
+ unsigned long size;
- mv_set(ioport_map);
- mv_set(ioport_unmap);
- mv_set(irq_demux);
-
-#ifdef CONFIG_SH_UNKNOWN
- __set_io_port_base(mv_io_base);
-#endif
-
- if (!sh_mv.mv_nr_irqs)
- sh_mv.mv_nr_irqs = NR_IRQS;
+ memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
+ size = memparse(p, &p);
+ memory_end = memory_start + size;
return 0;
}
+early_param("mem", early_parse_mem);
/*
* Register fully available low RAM pages with the bootmem allocator.
@@ -230,7 +121,7 @@ static void __init register_bootmem_low_pages(void)
free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
}
-void __init setup_bootmem_allocator(unsigned long start_pfn)
+void __init setup_bootmem_allocator(unsigned long free_pfn)
{
unsigned long bootmap_size;
@@ -239,9 +130,10 @@ void __init setup_bootmem_allocator(unsigned long start_pfn)
* 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), 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);
@@ -254,7 +146,7 @@ void __init setup_bootmem_allocator(unsigned long start_pfn)
* an invalid RAM area.
*/
reserve_bootmem(__MEMORY_START+PAGE_SIZE,
- (PFN_PHYS(start_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
+ (PFN_PHYS(free_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
@@ -262,6 +154,8 @@ void __init setup_bootmem_allocator(unsigned long start_pfn)
*/
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 (&__rd_start != &__rd_end) {
@@ -315,10 +209,6 @@ 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
@@ -339,9 +229,22 @@ void __init setup_arch(char **cmdline_p)
data_resource.start = virt_to_phys(_etext);
data_resource.end = virt_to_phys(_edata)-1;
+ 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(cmdline_p);
+ sh_mv_setup();
/*
* Find the highest page frame number we have available
@@ -355,8 +258,9 @@ void __init setup_arch(char **cmdline_p)
min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
nodes_clear(node_online_map);
+
+ /* Setup bootmem with available RAM */
setup_memory();
- paging_init();
sparse_init();
#ifdef CONFIG_DUMMY_CONSOLE
@@ -366,46 +270,12 @@ void __init setup_arch(char **cmdline_p)
/* Perform the machine specific initialisation */
if (likely(sh_mv.mv_setup))
sh_mv.mv_setup(cmdline_p);
-}
-
-struct sh_machine_vector* __init get_mv_byname(const char* name)
-{
- 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;
-}
-
-static struct cpu cpu[NR_CPUS];
-
-static int __init topology_init(void)
-{
- int cpu_id;
- for_each_possible_cpu(cpu_id)
- register_cpu(&cpu[cpu_id], cpu_id);
-
- return 0;
+ paging_init();
}
-subsys_initcall(topology_init);
-
static const char *cpu_name[] = {
[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",
@@ -413,13 +283,13 @@ static const char *cpu_name[] = {
[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)
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 07:21:37 +0000