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/* startup.S - bootstrap GRUB itself */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <grub/symbol.h>
#include <grub/boot.h>
.file "startup.S"
.text
.globl start, _start
start:
_start:
jmp codestart
/*
* Compatibility version number
*
* These MUST be at byte offset 6 and 7 of the executable
* DO NOT MOVE !!!
*/
. = _start + 0x6
.byte GRUB_BOOT_VERSION_MAJOR, GRUB_BOOT_VERSION_MINOR
/*
* This is a special data area 8 bytes from the beginning.
*/
. = _start + 0x8
VARIABLE(grub_prefix)
/* to be filled by grub-mkimage */
/*
* Leave some breathing room for the prefix.
*/
. = _start + 0x50
codestart:
/*
* EFI_SYSTEM_TABLE * and EFI_HANDLE are passed on the stack.
*/
movl 4(%esp), %eax
movl %eax, EXT_C(grub_efi_image_handle)
movl 8(%esp), %eax
movl %eax, EXT_C(grub_efi_system_table)
call EXT_C(grub_main)
ret
#include "../realmode.S"
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