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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
23 static 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
30 asmlinkage __visible void __init i386_start_kernel(void)
31 {
32 cr4_init_shadow();
33 sanitize_boot_params(&boot_params);
34
35 x86_early_init_platform_quirks();
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 }