/*
 *  Startup Code for MIPS32 XBURST CPU-core
 *
 *  Copyright (c) 2010 Xiangfu Liu <xiangfu@sharism.cc>
 *
 * 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 3 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
 */
	
#include <config.h>
#include <version.h>
#include <asm/regdef.h>
#include <asm/mipsregs.h>
#include <asm/addrspace.h>
#include <asm/cacheops.h>

#include <asm/jz4740.h>

	.set noreorder
	
	.globl _start
	.text
_start:
	.word JZ4740_NANDBOOT_CFG /* fetched during NAND Boot */
reset:	
	/* 
	 * STATUS register
	 * CU0=UM=EXL=IE=0, BEV=ERL=1, IP2~7=1
	 */
	li	t0, 0x0040FC04
	mtc0	t0, CP0_STATUS
	/* CAUSE register
	 * IV=1, use the specical interrupt vector (0x200) */
	li	t1, 0x00800000
	mtc0	t1, CP0_CAUSE
	
	bal     1f
	nop
	.word   _GLOBAL_OFFSET_TABLE_
1:
	move    gp, ra
	lw      t1, 0(ra)
	move	gp, t1

	la	sp, 0x80004000
	la	t9, nand_boot
	j	t9
	nop