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 11 #include <asm/setup.h> 12 #include <asm/sections.h> 13 #include <asm/e820.h> 14 #include <asm/bios_ebda.h> 15 16 void __init i386_start_kernel(void) 17 { 18 reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS"); 19 20 #ifdef CONFIG_BLK_DEV_INITRD 21 /* Reserve INITRD */ 22 if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { 23 u64 ramdisk_image = boot_params.hdr.ramdisk_image; 24 u64 ramdisk_size = boot_params.hdr.ramdisk_size; 25 u64 ramdisk_end = ramdisk_image + ramdisk_size; 26 reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); 27 } 28 #endif 29 reserve_early(init_pg_tables_start, init_pg_tables_end, 30 "INIT_PG_TABLE"); 31 32 reserve_ebda_region(); 33 34 /* 35 * At this point everything still needed from the boot loader 36 * or BIOS or kernel text should be early reserved or marked not 37 * RAM in e820. All other memory is free game. 38 */ 39 40 start_kernel(); 41 } 42