arch/x86/boot/main_entry.c

/*
 * Copyright (C) 2009 Juergen Beisert, Pengutronix
 *
 * This program 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 2 of
 * the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

/**
 * @file
 * @brief Start of the 32 bit flat mode
 */

#include <string.h>
#include <asm/sections.h>

extern void start_barebox(void);

/**
 * Called plainly from assembler that switches from real to flat mode
 *
 * @note The C environment isn't initialized yet
 */
void uboot_entry(void)
{
	/* clear the BSS first */
	memset(__bss_start, 0x00, __bss_stop - __bss_start);
	start_barebox();
}