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 reserve_ebda_region(); 30 } 31 32 asmlinkage __visible void __init i386_start_kernel(void) 33 { 34 sanitize_boot_params(&boot_params); 35 36 /* Call the subarch specific early setup function */ 37 switch (boot_params.hdr.hardware_subarch) { 38 case X86_SUBARCH_INTEL_MID: 39 x86_intel_mid_early_setup(); 40 break; 41 case X86_SUBARCH_CE4100: 42 x86_ce4100_early_setup(); 43 break; 44 default: 45 i386_default_early_setup(); 46 break; 47 } 48 49 start_kernel(); 50 } 51