* This file handles the architecture-dependent parts of initialization
*/
+#include <linux/config.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
-#include <linux/screen_info.h>
+#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/acpi.h>
#include <linux/apm_bios.h>
#include <linux/initrd.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
-#include <linux/platform_device.h>
#include <linux/console.h>
#include <linux/mca.h>
#include <linux/root_dev.h>
#include <linux/kexec.h>
#include <linux/crash_dump.h>
#include <linux/dmi.h>
-#include <linux/pfn.h>
#include <video/edid.h>
#include <asm/io_apic.h>
#include <asm/ist.h>
#include <asm/io.h>
-#include <setup_arch.h>
+#include "setup_arch_pre.h"
#include <bios_ebda.h>
/* Forward Declaration. */
}
}
-void __init add_memory_region(unsigned long long start,
- unsigned long long size, int type)
+static void __init add_memory_region(unsigned long long start,
+ unsigned long long size, int type)
{
int x;
static struct e820entry *overlap_list[E820MAX] __initdata;
static struct e820entry new_bios[E820MAX] __initdata;
-int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map)
+static int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map)
{
struct change_member *change_tmp;
unsigned long current_type, last_type;
* thinkpad 560x, for example, does not cooperate with the memory
* detection code.)
*/
-int __init copy_e820_map(struct e820entry * biosmap, int nr_map)
+static int __init copy_e820_map(struct e820entry * biosmap, int nr_map)
{
/* Only one memory region (or negative)? Ignore it */
if (nr_map < 2)
}
#endif
+/*
+ * Do NOT EVER look at the BIOS memory size location.
+ * It does not work on many machines.
+ */
+#define LOWMEMSIZE() (0x9f000)
+
static void __init parse_cmdline_early (char ** cmdline_p)
{
char c = ' ', *to = command_line, *from = saved_command_line;
return 0;
}
- /*
- * This function checks if the entire range <start,end> is mapped with type.
- *
- * Note: this function only works correct if the e820 table is sorted and
- * not-overlapping, which is the case
- */
-int __init
-e820_all_mapped(unsigned long s, unsigned long e, unsigned type)
-{
- u64 start = s;
- u64 end = e;
- int i;
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- if (type && ei->type != type)
- continue;
- /* is the region (part) in overlap with the current region ?*/
- if (ei->addr >= end || ei->addr + ei->size <= start)
- continue;
- /* if the region is at the beginning of <start,end> we move
- * start to the end of the region since it's ok until there
- */
- if (ei->addr <= start)
- start = ei->addr + ei->size;
- /* if start is now at or beyond end, we're done, full
- * coverage */
- if (start >= end)
- return 1; /* we're done */
- }
- return 0;
-}
-
/*
* Find the highest page frame number we have available
*/
free_available_memory(unsigned long start, unsigned long end, void *arg)
{
/* check max_low_pfn */
- if (start >= (max_low_pfn << PAGE_SHIFT))
+ if (start >= ((max_low_pfn + 1) << PAGE_SHIFT))
return 0;
- if (end >= (max_low_pfn << PAGE_SHIFT))
- end = max_low_pfn << PAGE_SHIFT;
+ if (end >= ((max_low_pfn + 1) << PAGE_SHIFT))
+ end = (max_low_pfn + 1) << PAGE_SHIFT;
if (start < end)
free_bootmem(start, end - start);
* the (very unlikely) case of us accidentally initializing the
* bootmem allocator with an invalid RAM area.
*/
- reserve_bootmem(__PHYSICAL_START, (PFN_PHYS(min_low_pfn) +
- bootmap_size + PAGE_SIZE-1) - (__PHYSICAL_START));
+ reserve_bootmem(PHYSICAL_START, (PFN_PHYS(min_low_pfn) +
+ bootmap_size + PAGE_SIZE-1) - (PHYSICAL_START));
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
probe_roms();
for (i = 0; i < e820.nr_map; i++) {
struct resource *res;
-#ifndef CONFIG_RESOURCES_64BIT
if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
continue;
-#endif
- res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
+ res = alloc_bootmem_low(sizeof(struct resource));
switch (e820.map[i].type) {
case E820_RAM: res->name = "System RAM"; break;
case E820_ACPI: res->name = "ACPI Tables"; break;
res->start = e820.map[i].addr;
res->end = res->start + e820.map[i].size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- if (request_resource(&iomem_resource, res)) {
- kfree(res);
- continue;
- }
+ request_resource(&iomem_resource, res);
if (e820.map[i].type == E820_RAM) {
/*
* We don't know which RAM region contains kernel data,
/*
* Request address space for all standard resources
- *
- * This is called just before pcibios_init(), which is also a
- * subsys_initcall, but is linked in later (in arch/i386/pci/common.c).
*/
-static int __init request_standard_resources(void)
+static void __init register_memory(void)
{
- int i;
+ unsigned long gapstart, gapsize, round;
+ unsigned long long last;
+ int i;
- printk("Setting up standard PCI resources\n");
if (efi_enabled)
efi_initialize_iomem_resources(&code_resource, &data_resource);
else
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
- return 0;
-}
-
-subsys_initcall(request_standard_resources);
-
-static void __init register_memory(void)
-{
- unsigned long gapstart, gapsize, round;
- unsigned long long last;
- int i;
/*
* Search for the bigest gap in the low 32 bits of the e820
pci_mem_start, gapstart, gapsize);
}
+/* Use inline assembly to define this because the nops are defined
+ as inline assembly strings in the include files and we cannot
+ get them easily into strings. */
+asm("\t.data\nintelnops: "
+ GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5 GENERIC_NOP6
+ GENERIC_NOP7 GENERIC_NOP8);
+asm("\t.data\nk8nops: "
+ K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
+ K8_NOP7 K8_NOP8);
+asm("\t.data\nk7nops: "
+ K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
+ K7_NOP7 K7_NOP8);
+
+extern unsigned char intelnops[], k8nops[], k7nops[];
+static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
+ NULL,
+ intelnops,
+ intelnops + 1,
+ intelnops + 1 + 2,
+ intelnops + 1 + 2 + 3,
+ intelnops + 1 + 2 + 3 + 4,
+ intelnops + 1 + 2 + 3 + 4 + 5,
+ intelnops + 1 + 2 + 3 + 4 + 5 + 6,
+ intelnops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
+};
+static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
+ NULL,
+ k8nops,
+ k8nops + 1,
+ k8nops + 1 + 2,
+ k8nops + 1 + 2 + 3,
+ k8nops + 1 + 2 + 3 + 4,
+ k8nops + 1 + 2 + 3 + 4 + 5,
+ k8nops + 1 + 2 + 3 + 4 + 5 + 6,
+ k8nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
+};
+static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
+ NULL,
+ k7nops,
+ k7nops + 1,
+ k7nops + 1 + 2,
+ k7nops + 1 + 2 + 3,
+ k7nops + 1 + 2 + 3 + 4,
+ k7nops + 1 + 2 + 3 + 4 + 5,
+ k7nops + 1 + 2 + 3 + 4 + 5 + 6,
+ k7nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
+};
+static struct nop {
+ int cpuid;
+ unsigned char **noptable;
+} noptypes[] = {
+ { X86_FEATURE_K8, k8_nops },
+ { X86_FEATURE_K7, k7_nops },
+ { -1, NULL }
+};
+
+/* Replace instructions with better alternatives for this CPU type.
+
+ This runs before SMP is initialized to avoid SMP problems with
+ self modifying code. This implies that assymetric systems where
+ APs have less capabilities than the boot processor are not handled.
+ Tough. Make sure you disable such features by hand. */
+void apply_alternatives(void *start, void *end)
+{
+ struct alt_instr *a;
+ int diff, i, k;
+ unsigned char **noptable = intel_nops;
+ for (i = 0; noptypes[i].cpuid >= 0; i++) {
+ if (boot_cpu_has(noptypes[i].cpuid)) {
+ noptable = noptypes[i].noptable;
+ break;
+ }
+ }
+ for (a = start; (void *)a < end; a++) {
+ if (!boot_cpu_has(a->cpuid))
+ continue;
+ BUG_ON(a->replacementlen > a->instrlen);
+ memcpy(a->instr, a->replacement, a->replacementlen);
+ diff = a->instrlen - a->replacementlen;
+ /* Pad the rest with nops */
+ for (i = a->replacementlen; diff > 0; diff -= k, i += k) {
+ k = diff;
+ if (k > ASM_NOP_MAX)
+ k = ASM_NOP_MAX;
+ memcpy(a->instr + i, noptable[k], k);
+ }
+ }
+}
+
+void __init alternative_instructions(void)
+{
+ extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
+ apply_alternatives(__alt_instructions, __alt_instructions_end);
+}
+
+static char * __init machine_specific_memory_setup(void);
+
#ifdef CONFIG_MCA
static void set_mca_bus(int x)
{
parse_cmdline_early(cmdline_p);
-#ifdef CONFIG_EARLY_PRINTK
- {
- char *s = strstr(*cmdline_p, "earlyprintk=");
- if (s) {
- setup_early_printk(strchr(s, '=') + 1);
- printk("early console enabled\n");
- }
- }
-#endif
-
max_low_pfn = setup_memory();
/*
* NOTE: at this point the bootmem allocator is fully available.
*/
+#ifdef CONFIG_EARLY_PRINTK
+ {
+ char *s = strstr(*cmdline_p, "earlyprintk=");
+ if (s) {
+ extern void setup_early_printk(char *);
+
+ setup_early_printk(strchr(s, '=') + 1);
+ printk("early console enabled\n");
+ }
+ }
+#endif
+
+
dmi_scan_machine();
#ifdef CONFIG_X86_GENERICARCH
if (efi_enabled)
efi_map_memmap();
-#ifdef CONFIG_ACPI
- /*
- * Parse the ACPI tables for possible boot-time SMP configuration.
- */
- acpi_boot_table_init();
-#endif
-
#ifdef CONFIG_X86_IO_APIC
check_acpi_pci(); /* Checks more than just ACPI actually */
#endif
#ifdef CONFIG_ACPI
+ /*
+ * Parse the ACPI tables for possible boot-time SMP configuration.
+ */
+ acpi_boot_table_init();
acpi_boot_init();
#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
conswitchp = &dummy_con;
#endif
#endif
- tsc_init();
-}
-
-static __init int add_pcspkr(void)
-{
- struct platform_device *pd;
- int ret;
-
- pd = platform_device_alloc("pcspkr", -1);
- if (!pd)
- return -ENOMEM;
-
- ret = platform_device_add(pd);
- if (ret)
- platform_device_put(pd);
-
- return ret;
}
-device_initcall(add_pcspkr);
+#include "setup_arch_post.h"
/*
* Local Variables:
* mode:c
git://git.onelab.eu / linux-2.6.git / blobdiff