diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:17:24 +0200 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:17:24 +0200 |
commit | 250c22777fe1ccd7ac588579a6c16db4c0161cc5 (patch) | |
tree | 55c317efb7d792ec6fdae1d1937c67a502c48dec /arch/x86_64/kernel/head64.c | |
parent | 2db55d344e529492545cb3b755c7e9ba8e4fa94e (diff) |
x86_64: move kernel
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86_64/kernel/head64.c')
-rw-r--r-- | arch/x86_64/kernel/head64.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c deleted file mode 100644 index 6c34bdd22e26..000000000000 --- a/arch/x86_64/kernel/head64.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * linux/arch/x86_64/kernel/head64.c -- prepare to run common code - * - * Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE - */ - -#include <linux/init.h> -#include <linux/linkage.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/percpu.h> - -#include <asm/processor.h> -#include <asm/proto.h> -#include <asm/smp.h> -#include <asm/bootsetup.h> -#include <asm/setup.h> -#include <asm/desc.h> -#include <asm/pgtable.h> -#include <asm/tlbflush.h> -#include <asm/sections.h> - -static void __init zap_identity_mappings(void) -{ - pgd_t *pgd = pgd_offset_k(0UL); - pgd_clear(pgd); - __flush_tlb(); -} - -/* Don't add a printk in there. printk relies on the PDA which is not initialized - yet. */ -static void __init clear_bss(void) -{ - memset(__bss_start, 0, - (unsigned long) __bss_stop - (unsigned long) __bss_start); -} - -#define NEW_CL_POINTER 0x228 /* Relative to real mode data */ -#define OLD_CL_MAGIC_ADDR 0x20 -#define OLD_CL_MAGIC 0xA33F -#define OLD_CL_OFFSET 0x22 - -static void __init copy_bootdata(char *real_mode_data) -{ - unsigned long new_data; - char * command_line; - - memcpy(x86_boot_params, real_mode_data, BOOT_PARAM_SIZE); - new_data = *(u32 *) (x86_boot_params + NEW_CL_POINTER); - if (!new_data) { - if (OLD_CL_MAGIC != *(u16 *)(real_mode_data + OLD_CL_MAGIC_ADDR)) { - return; - } - new_data = __pa(real_mode_data) + *(u16 *)(real_mode_data + OLD_CL_OFFSET); - } - command_line = __va(new_data); - memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); -} - -void __init x86_64_start_kernel(char * real_mode_data) -{ - int i; - - /* clear bss before set_intr_gate with early_idt_handler */ - clear_bss(); - - /* Make NULL pointers segfault */ - zap_identity_mappings(); - - for (i = 0; i < IDT_ENTRIES; i++) - set_intr_gate(i, early_idt_handler); - asm volatile("lidt %0" :: "m" (idt_descr)); - - early_printk("Kernel alive\n"); - - for (i = 0; i < NR_CPUS; i++) - cpu_pda(i) = &boot_cpu_pda[i]; - - pda_init(0); - copy_bootdata(__va(real_mode_data)); -#ifdef CONFIG_SMP - cpu_set(0, cpu_online_map); -#endif - start_kernel(); -} |