LXR linux/arch/x86/kernel/head32.c

   1/*
   2 *  linux/arch/i386/kernel/head32.c -- prepare to run common code
   3 *
   4 *  Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
   5 *  Copyright (C) 2007 Eric Biederman <ebiederm@xmission.com>
   6 */
   7
   8#include <linux/init.h>
   9#include <linux/start_kernel.h>
  10#include <linux/mm.h>
  11#include <linux/memblock.h>
  12
  13#include <asm/setup.h>
  14#include <asm/sections.h>
  15#include <asm/e820.h>
  16#include <asm/page.h>
  17#include <asm/apic.h>
  18#include <asm/io_apic.h>
  19#include <asm/bios_ebda.h>
  20#include <asm/tlbflush.h>
  21#include <asm/bootparam_utils.h>
  22
  23static void __init i386_default_early_setup(void)
  24{
  25        /* Initialize 32bit specific setup functions */
  26        x86_init.resources.reserve_resources = i386_reserve_resources;
  27        x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
  28
  29        reserve_ebda_region();
  30}
  31
  32asmlinkage __visible void __init i386_start_kernel(void)
  33{
  34        cr4_init_shadow();
  35        sanitize_boot_params(&boot_params);
  36
  37        /* Call the subarch specific early setup function */
  38        switch (boot_params.hdr.hardware_subarch) {
  39        case X86_SUBARCH_INTEL_MID:
  40                x86_intel_mid_early_setup();
  41                break;
  42        case X86_SUBARCH_CE4100:
  43                x86_ce4100_early_setup();
  44                break;
  45        default:
  46                i386_default_early_setup();
  47                break;
  48        }
  49
  50        start_kernel();
  51}
  52