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/*
* The head-file for SH-Mobile ARM platforms
*
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
* Simon Horman <horms@verge.net.au>
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef CONFIG_ZBOOT_ROM
.section ".start", "ax"
/* load board-specific initialization code */
#include <mach/zboot.h>
adr r0, dtb_info
ldmia r0, {r1, r3, r4, r5, r7}
sub r0, r0, r1 @ calculate the delta offset
add r5, r5, r0 @ _edata
ldr lr, [r5, #0] @ check if valid DTB is present
cmp lr, r3
bne 0f
add r9, r7, #31 @ rounded up to a multiple
bic r9, r9, #31 @ ... of 32 bytes
add r6, r9, r5 @ copy from _edata
add r9, r9, r4 @ to MEMORY_START
1: ldmdb r6!, {r0 - r3, r10 - r12, lr}
cmp r6, r5
stmdb r9!, {r0 - r3, r10 - r12, lr}
bhi 1b
/* Success: Zero board ID, pointer to start of memory for atag/dtb */
mov r7, #0
mov r8, r4
b 2f
.align 2
dtb_info:
.word dtb_info
#ifndef __ARMEB__
.word 0xedfe0dd0 @ sig is 0xd00dfeed big endian
#else
.word 0xd00dfeed
#endif
.word MEMORY_START
.word _edata
.word 0x4000 @ maximum DTB size
0:
/* Failure: Zero board ID, NULL atag/dtb */
mov r7, #0
mov r8, #0 @ pass null pointer as atag
2 :
#endif /* CONFIG_ZBOOT_ROM */
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