/* * 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 <asm/setup.h> #include <asm/sections.h> #include <asm/e820.h> #include <asm/page.h> #include <asm/trampoline.h> #include <asm/apic.h> #include <asm/io_apic.h> #include <asm/bios_ebda.h> static void __init i386_default_early_setup(void) { /* Initilize 32bit specific setup functions */ x86_init.resources.probe_roms = probe_roms; x86_init.resources.reserve_resources = i386_reserve_resources; x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc; reserve_ebda_region(); } void __init i386_start_kernel(void) { reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; u64 ramdisk_end = ramdisk_image + ramdisk_size; reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); } #endif /* Call the subarch specific early setup function */ switch (boot_params.hdr.hardware_subarch) { case X86_SUBARCH_MRST: x86_mrst_early_setup(); break; default: i386_default_early_setup(); break; } /* * At this point everything still needed from the boot loader * or BIOS or kernel text should be early reserved or marked not * RAM in e820. All other memory is free game. */ start_kernel(); }