2 * The head-file for SH-Mobile ARM platforms
4 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
5 * Simon Horman <horms@verge.net.au>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifdef CONFIG_ZBOOT_ROM
23 .section ".start", "ax"
25 /* load board-specific initialization code */
26 #include <mach/zboot.h>
28 #if defined(CONFIG_ZBOOT_ROM_MMCIF) || defined(CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI)
29 /* Load image from MMC/SD */
30 adr sp, __tmp_stack + 256
37 /* Jump to loaded code */
49 .long MEMORY_START + 0x02000000 @ Load at 32Mb into SDRAM
56 #endif /* CONFIG_ZBOOT_ROM_MMC || CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI */
59 ldmia r0, {r1, r3, r4, r5, r7}
61 sub r0, r0, r1 @ calculate the delta offset
62 add r5, r5, r0 @ _edata
64 ldr lr, [r5, #0] @ check if valid DTB is present
68 add r9, r7, #31 @ rounded up to a multiple
69 bic r9, r9, #31 @ ... of 32 bytes
71 add r6, r9, r5 @ copy from _edata
72 add r9, r9, r4 @ to MEMORY_START
74 1: ldmdb r6!, {r0 - r3, r10 - r12, lr}
76 stmdb r9!, {r0 - r3, r10 - r12, lr}
79 /* Success: Zero board ID, pointer to start of memory for atag/dtb */
88 .word 0xedfe0dd0 @ sig is 0xd00dfeed big endian
94 .word 0x4000 @ maximum DTB size
96 /* Failure: Zero board ID, NULL atag/dtb */
98 mov r8, #0 @ pass null pointer as atag
101 #endif /* CONFIG_ZBOOT_ROM */