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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/boot/compressed/head-shmobile.S
10819 views
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/*

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 * The head-file for SH-Mobile ARM platforms

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 *

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 * Kuninori Morimoto <[email protected]>

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 * Simon Horman <[email protected]>

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 *

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 * This program is free software; you can redistribute it and/or modify

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 * it under the terms of the GNU General Public License as published by

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 * the Free Software Foundation; version 2 of the License.

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 *

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 * This program is distributed in the hope that it will be useful,

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 * but WITHOUT ANY WARRANTY; without even the implied warranty of

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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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 * GNU General Public License for more details.

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 *

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 * You should have received a copy of the GNU General Public License

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 * along with this program; if not, write to the Free Software

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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

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 */

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#ifdef CONFIG_ZBOOT_ROM

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	.section	".start", "ax"

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	/* load board-specific initialization code */

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#include <mach/zboot.h>

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#ifdef CONFIG_ZBOOT_ROM_MMCIF

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	/* Load image from MMC */

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	adr	sp, __tmp_stack + 128

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	ldr	r0, __image_start

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	ldr	r1, __image_end

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	subs	r1, r1, r0

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	ldr	r0, __load_base

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	bl	mmcif_loader

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	/* Jump to loaded code */

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	ldr	r0, __loaded

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	ldr	r1, __image_start

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	sub	r0, r0, r1

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	ldr	r1, __load_base

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	add	pc, r0, r1

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__image_start:

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	.long	_start

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__image_end:

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	.long	_got_end

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__load_base:

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	.long	CONFIG_MEMORY_START + 0x02000000 @ Load at 32Mb into SDRAM

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__loaded:

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	.long	__continue

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	.align

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__tmp_stack:

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	.space	128

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__continue:

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#endif /* CONFIG_ZBOOT_ROM_MMCIF */

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	b	1f

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__atags:@ tag #1

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	.long	12			@ tag->hdr.size = tag_size(tag_core);

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	.long	0x54410001		@ tag->hdr.tag = ATAG_CORE;

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	.long   0			@ tag->u.core.flags = 0;

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	.long	0			@ tag->u.core.pagesize = 0;

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	.long	0			@ tag->u.core.rootdev = 0;

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	@ tag #2

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	.long	8			@ tag->hdr.size = tag_size(tag_mem32);

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	.long	0x54410002		@ tag->hdr.tag = ATAG_MEM;

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	.long	CONFIG_MEMORY_SIZE	@ tag->u.mem.size = CONFIG_MEMORY_SIZE;

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	.long	CONFIG_MEMORY_START	@ @ tag->u.mem.start = CONFIG_MEMORY_START;

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	@ tag #3

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	.long	0			@ tag->hdr.size = 0

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	.long	0			@ tag->hdr.tag = ATAG_NONE;

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1:

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	/* Set board ID necessary for boot */

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	ldr	r7, 1f				@ Set machine type register

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	adr	r8, __atags			@ Set atag register

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	b	2f

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1 :	.long MACH_TYPE

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2 :

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#endif /* CONFIG_ZBOOT_ROM */

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