mirror of
https://github.com/linux-sunxi/sunxi-tools.git
synced 2024-11-26 19:33:58 +08:00
43 lines
1.4 KiB
ArmAsm
43 lines
1.4 KiB
ArmAsm
/*
|
|
* Boot header to work around broken Allwinner A1x boot loaders
|
|
*
|
|
* Copyright (C) 2012 Henrik Nordstrom <henrik@henriknordstrom.net>
|
|
*
|
|
* 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
|
|
*
|
|
*
|
|
* This file is a workaround to broken bootloaders on Allwinner A1x
|
|
* platform who do not provide correct machid or atags address
|
|
*
|
|
* Usage:
|
|
* load the header at 0x40007000 and change the entry point of your
|
|
* boot process to 0x40007000
|
|
*
|
|
* Detailed memory map:
|
|
* 0x40000100 atags
|
|
* 0x40007000 boot_head (entry point)
|
|
* 0x40008000 kernel
|
|
* 0x43000000 script.bin
|
|
* If you have a ramdisk then load it at some higher address
|
|
*/
|
|
|
|
_start:
|
|
ldr r0, =0
|
|
ldr r1, =MACHID
|
|
ldr r2, =0x40000100
|
|
ldr lr, =0x40008000
|
|
bx lr
|