[people/ms/u-boot.git] / common / spl / spl_nand.c

/*
 * Copyright (C) 2011
 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <config.h>
#include <spl.h>
#include <asm/io.h>
#include <nand.h>

void spl_nand_load_image(void)
{
	struct image_header *header;
	int *src __attribute__((unused));
	int *dst __attribute__((unused));

	debug("spl: nand - using hw ecc\n");
	nand_init();

	/*use CONFIG_SYS_TEXT_BASE as temporary storage area */
	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
#ifdef CONFIG_SPL_OS_BOOT
	if (!spl_start_uboot()) {
		/*
		 * load parameter image
		 * load to temp position since nand_spl_load_image reads
		 * a whole block which is typically larger than
		 * CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite
		 * following sections like BSS
		 */
		nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS,
			CONFIG_CMD_SPL_WRITE_SIZE,
			(void *)CONFIG_SYS_TEXT_BASE);
		/* copy to destintion */
		for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR,
				src = (int *)CONFIG_SYS_TEXT_BASE;
				src < (int *)(CONFIG_SYS_TEXT_BASE +
				CONFIG_CMD_SPL_WRITE_SIZE);
				src++, dst++) {
			writel(readl(src), dst);
		}

		/* load linux */
		nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
			CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
		spl_parse_image_header(header);
		if (header->ih_os == IH_OS_LINUX) {
			/* happy - was a linux */
			nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
				spl_image.size, (void *)spl_image.load_addr);
			nand_deselect();
			return;
		} else {
			puts("The Expected Linux image was not "
				"found. Please check your NAND "
				"configuration.\n");
			puts("Trying to start u-boot now...\n");
		}
	}
#endif
#ifdef CONFIG_NAND_ENV_DST
	nand_spl_load_image(CONFIG_ENV_OFFSET,
		CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
	spl_parse_image_header(header);
	nand_spl_load_image(CONFIG_ENV_OFFSET, spl_image.size,
		(void *)spl_image.load_addr);
#ifdef CONFIG_ENV_OFFSET_REDUND
	nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND,
		CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
	spl_parse_image_header(header);
	nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, spl_image.size,
		(void *)spl_image.load_addr);
#endif
#endif
	/* Load u-boot */
	nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
		sizeof(*header), (void *)header);
	spl_parse_image_header(header);
	nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
		spl_image.size, (void *)spl_image.load_addr);
	nand_deselect();
}
Commit	Line	Data
9ea5c6ef SS	1	/*
	2	* Copyright (C) 2011
	3	* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
9ea5c6ef SS	6	*/
9ea5c6ef SS	7	#include <common.h>
d97b4ce8	8	#include <config.h>
47f7bcae	9	#include <spl.h>
df163a59	10	#include <asm/io.h>
9ea5c6ef	11	#include <nand.h>
9ea5c6ef	12
9ea5c6ef SS	13	void spl_nand_load_image(void)
	14	{
	15	struct image_header *header;
df163a59 SS	16	int *src __attribute__((unused));
	17	int *dst __attribute__((unused));
	18
8082fda9	19	debug("spl: nand - using hw ecc\n");
8082fda9	20	nand_init();
9ea5c6ef SS	21
	22	/use CONFIG_SYS_TEXT_BASE as temporary storage area /
	23	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
df163a59	24	#ifdef CONFIG_SPL_OS_BOOT
379c19ab	25	if (!spl_start_uboot()) {
df163a59 SS	26	/*
	27	* load parameter image
	28	* load to temp position since nand_spl_load_image reads
	29	* a whole block which is typically larger than
b6e95fd4	30	* CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite
df163a59 SS	31	* following sections like BSS
	32	*/
	33	nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS,
	34	CONFIG_CMD_SPL_WRITE_SIZE,
	35	(void *)CONFIG_SYS_TEXT_BASE);
	36	/* copy to destintion */
	37	for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR,
	38	src = (int *)CONFIG_SYS_TEXT_BASE;
	39	src < (int *)(CONFIG_SYS_TEXT_BASE +
	40	CONFIG_CMD_SPL_WRITE_SIZE);
	41	src++, dst++) {
	42	writel(readl(src), dst);
	43	}
9ea5c6ef	44
df163a59 SS	45	/* load linux */
	46	nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
	47	CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
	48	spl_parse_image_header(header);
379c19ab SS	49	if (header->ih_os == IH_OS_LINUX) {
	50	/* happy - was a linux */
	51	nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
	52	spl_image.size, (void *)spl_image.load_addr);
	53	nand_deselect();
	54	return;
	55	} else {
d97b4ce8 TR	56	puts("The Expected Linux image was not "
d97b4ce8 TR	57	"found. Please check your NAND "
379c19ab	58	"configuration.\n");
d97b4ce8	59	puts("Trying to start u-boot now...\n");
379c19ab SS	60	}
379c19ab SS	61	}
df163a59	62	#endif
9ea5c6ef	63	#ifdef CONFIG_NAND_ENV_DST
379c19ab SS	64	nand_spl_load_image(CONFIG_ENV_OFFSET,
	65	CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
	66	spl_parse_image_header(header);
	67	nand_spl_load_image(CONFIG_ENV_OFFSET, spl_image.size,
	68	(void *)spl_image.load_addr);
9ea5c6ef	69	#ifdef CONFIG_ENV_OFFSET_REDUND
379c19ab SS	70	nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND,
	71	CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
	72	spl_parse_image_header(header);
	73	nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, spl_image.size,
	74	(void *)spl_image.load_addr);
9ea5c6ef SS	75	#endif
9ea5c6ef SS	76	#endif
379c19ab SS	77	/* Load u-boot */
379c19ab SS	78	nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
50c8d66d	79	sizeof(header), (void )header);
379c19ab SS	80	spl_parse_image_header(header);
	81	nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
	82	spl_image.size, (void *)spl_image.load_addr);
9ea5c6ef SS	83	nand_deselect();
9ea5c6ef SS	84	}