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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* SPDX-FileCopyrightText: Juergen Beisert, Pengutronix */
/* This code was inspired by the GRUB2 project. */
/**
* @file
* @brief Common boot sector main routine to be entered by the BIOS
*/
/**
* @fn void _start(void)
*
* @brief Fix segment:offset settings of some buggy BIOSs
*/
.file "boot_main.S"
.code16
.extern real_start
.section .boot_start, "ax"
.type _start, @function
/*
* The BIOS loads this code to address 0x00007c00.
* The code should be called with CS:IP 0:0x7c00 (hopefully).
*/
.globl _start
_start:
cli /* we're not safe here! */
/*
* It seems there are implementations in the wild which call this
* code with CS:IP 0x07C0:0000 instead. We fix it immediately.
*/
ljmp $0, $real_start
.size _start, .-_start
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