mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-17 20:36:17 +02:00
64 lines
1.5 KiB
ArmAsm
64 lines
1.5 KiB
ArmAsm
|
/*
|
||
|
|
* 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
|