summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/head32.c
blob: f16c55bfc0907bc4a3b1f35174ca5f5cbc53ce99 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/*
 *  linux/arch/i386/kernel/head32.c -- prepare to run common code
 *
 *  Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
 *  Copyright (C) 2007 Eric Biederman <ebiederm@xmission.com>
 */

#include <linux/init.h>
#include <linux/start_kernel.h>
#include <linux/mm.h>
#include <linux/memblock.h>

#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/e820.h>
#include <asm/page.h>
#include <asm/apic.h>
#include <asm/io_apic.h>
#include <asm/bios_ebda.h>
#include <asm/tlbflush.h>
#include <asm/bootparam_utils.h>

static void __init i386_default_early_setup(void)
{
	/* Initialize 32bit specific setup functions */
	x86_init.resources.reserve_resources = i386_reserve_resources;
	x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
}

asmlinkage __visible void __init i386_start_kernel(void)
{
	cr4_init_shadow();
	sanitize_boot_params(&boot_params);

	x86_early_init_platform_quirks();

	/* Call the subarch specific early setup function */
	switch (boot_params.hdr.hardware_subarch) {
	case X86_SUBARCH_INTEL_MID:
		x86_intel_mid_early_setup();
		break;
	case X86_SUBARCH_CE4100:
		x86_ce4100_early_setup();
		break;
	default:
		i386_default_early_setup();
		break;
	}

	start_kernel();
}