/* * (C) Copyright 2002 * Daniel Engstr鰉, Omicron Ceti AB <daniel@omicron.se>. * * See file CREDITS for list of people who contributed to this * project. * * 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 *//* * 16bit initialization code. * This code have to map the area of the boot flash * that is used by U-boot to its final destination. */.text.section .start16, "ax".code16.globl board_init16board_init16:	/* Alias MMCR to 0xdf000 */	movw	$0xfffc, %dx	movl	$0x800df0cb, %eax	outl	%eax, %dx	/* Set ds to point to MMCR alias */	movw	$0xdf00, %ax	movw	%ax, %ds	/* Map the entire flash at 0x38000000	 * (with BOOTCS and PAR14, use 0xabfff800 for ROMCS1) */	movl    $0xc0, %edi	movl	$0x8bfff800, %eax	movl	%eax, (%di)	/* Disable SDRAM write buffer */	movw    $0x40,%di	xorw    %ax,%ax	movb    %al, (%di)	/* Disabe MMCR alias */	movw	$0xfffc, %dx	movl	$0x000000cb, %eax	outl	%eax, %dx	/* the return address is tored in bp */	jmp	*%bp.section .bios, "ax".code16.globl realmode_resetrealmode_reset:	/* Alias MMCR to 0xdf000 */	movw	$0xfffc, %dx	movl	$0x800df0cb, %eax	outl	%eax, %dx	/* Set ds to point to MMCR alias */	movw	$0xdf00, %ax	movw	%ax, %ds	/* issue software reset thorugh MMCR */	movl    $0xd72, %edi	movb	$0x01, %al	movb	%al, (%di)1:	hlt	jmp	1