[people/ms/u-boot.git] / env / onenand.c

/*
 * (C) Copyright 2010 DENX Software Engineering
 * Wolfgang Denk <wd@denx.de>
 *
 * (C) Copyright 2005-2009 Samsung Electronics
 * Kyungmin Park <kyungmin.park@samsung.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <search.h>
#include <errno.h>
#include <onenand_uboot.h>

#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>

#define ONENAND_MAX_ENV_SIZE	CONFIG_ENV_SIZE
#define ONENAND_ENV_SIZE(mtd)	(ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)

DECLARE_GLOBAL_DATA_PTR;

static int env_onenand_load(void)
{
	struct mtd_info *mtd = &onenand_mtd;
#ifdef CONFIG_ENV_ADDR_FLEX
	struct onenand_chip *this = &onenand_chip;
#endif
	int rc;
	size_t retlen;
#ifdef ENV_IS_EMBEDDED
	char *buf = (char *)&environment;
#else
	loff_t env_addr = CONFIG_ENV_ADDR;
	char onenand_env[ONENAND_MAX_ENV_SIZE];
	char *buf = (char *)&onenand_env[0];
#endif /* ENV_IS_EMBEDDED */

#ifndef ENV_IS_EMBEDDED
# ifdef CONFIG_ENV_ADDR_FLEX
	if (FLEXONENAND(this))
		env_addr = CONFIG_ENV_ADDR_FLEX;
# endif
	/* Check OneNAND exist */
	if (mtd->writesize)
		/* Ignore read fail */
		mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
				&retlen, (u_char *)buf);
	else
		mtd->writesize = MAX_ONENAND_PAGESIZE;
#endif /* !ENV_IS_EMBEDDED */

	rc = env_import(buf, 1);
	if (rc)
		gd->env_valid = ENV_VALID;

	return rc ? 0 : -EIO;
}

static int env_onenand_save(void)
{
	env_t	env_new;
	int ret;
	struct mtd_info *mtd = &onenand_mtd;
#ifdef CONFIG_ENV_ADDR_FLEX
	struct onenand_chip *this = &onenand_chip;
#endif
	loff_t	env_addr = CONFIG_ENV_ADDR;
	size_t	retlen;
	struct erase_info instr = {
		.callback	= NULL,
	};

	ret = env_export(&env_new);
	if (ret)
		return ret;

	instr.len = CONFIG_ENV_SIZE;
#ifdef CONFIG_ENV_ADDR_FLEX
	if (FLEXONENAND(this)) {
		env_addr = CONFIG_ENV_ADDR_FLEX;
		instr.len = CONFIG_ENV_SIZE_FLEX;
		instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
				1 : 0;
	}
#endif
	instr.addr = env_addr;
	instr.mtd = mtd;
	if (mtd_erase(mtd, &instr)) {
		printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
		return 1;
	}

	if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
			(u_char *)&env_new)) {
		printf("OneNAND: write failed at 0x%llx\n", instr.addr);
		return 2;
	}

	return 0;
}

U_BOOT_ENV_LOCATION(onenand) = {
	.location	= ENVL_ONENAND,
	ENV_NAME("OneNAND")
	.load		= env_onenand_load,
	.save		= env_save_ptr(env_onenand_save),
};
Commit	Line	Data
d7e8ce10	1	/*
ea882baf WD	2	* (C) Copyright 2010 DENX Software Engineering
	3	* Wolfgang Denk <wd@denx.de>
	4	*
937076f8	5	* (C) Copyright 2005-2009 Samsung Electronics
d7e8ce10 KP	6	* Kyungmin Park <kyungmin.park@samsung.com>
d7e8ce10 KP	7	*
1a459660	8	* SPDX-License-Identifier: GPL-2.0+
d7e8ce10 KP	9	*/
	10
	11	#include <common.h>
d7e8ce10 KP	12	#include <command.h>
	13	#include <environment.h>
	14	#include <linux/stddef.h>
	15	#include <malloc.h>
ea882baf WD	16	#include <search.h>
ea882baf WD	17	#include <errno.h>
b919ec25	18	#include <onenand_uboot.h>
d7e8ce10	19
7b15e2bb	20	#include <linux/compat.h>
d7e8ce10 KP	21	#include <linux/mtd/mtd.h>
	22	#include <linux/mtd/onenand.h>
	23
034afbcc	24	#define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
937076f8 KP	25	#define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
937076f8 KP	26
a9da2b41 KP	27	DECLARE_GLOBAL_DATA_PTR;
a9da2b41 KP	28
c5951991	29	static int env_onenand_load(void)
d7e8ce10	30	{
937076f8	31	struct mtd_info *mtd = &onenand_mtd;
b821cead	32	#ifdef CONFIG_ENV_ADDR_FLEX
c758e947	33	struct onenand_chip *this = &onenand_chip;
b821cead	34	#endif
ea882baf	35	int rc;
2ae64f51	36	size_t retlen;
ea882baf	37	#ifdef ENV_IS_EMBEDDED
994bc671	38	char buf = (char )&environment;
ea882baf WD	39	#else
ea882baf WD	40	loff_t env_addr = CONFIG_ENV_ADDR;
cd0f4fa1 TR	41	char onenand_env[ONENAND_MAX_ENV_SIZE];
cd0f4fa1 TR	42	char buf = (char )&onenand_env[0];
ea882baf	43	#endif /* ENV_IS_EMBEDDED */
d7e8ce10	44
ea882baf WD	45	#ifndef ENV_IS_EMBEDDED
ea882baf WD	46	# ifdef CONFIG_ENV_ADDR_FLEX
c758e947 AKS	47	if (FLEXONENAND(this))
c758e947 AKS	48	env_addr = CONFIG_ENV_ADDR_FLEX;
ea882baf	49	# endif
d7e8ce10	50	/* Check OneNAND exist */
937076f8	51	if (mtd->writesize)
d7e8ce10	52	/* Ignore read fail */
dfe64e2c	53	mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
b919ec25	54	&retlen, (u_char *)buf);
d7e8ce10	55	else
937076f8	56	mtd->writesize = MAX_ONENAND_PAGESIZE;
ea882baf	57	#endif /* !ENV_IS_EMBEDDED */
d7e8ce10	58
ea882baf WD	59	rc = env_import(buf, 1);
ea882baf WD	60	if (rc)
203e94f6	61	gd->env_valid = ENV_VALID;
c5951991 SG	62
c5951991 SG	63	return rc ? 0 : -EIO;
d7e8ce10 KP	64	}
d7e8ce10 KP	65
e5bce247	66	static int env_onenand_save(void)
d7e8ce10	67	{
cd0f4fa1	68	env_t env_new;
7ce1526e	69	int ret;
937076f8	70	struct mtd_info *mtd = &onenand_mtd;
b821cead	71	#ifdef CONFIG_ENV_ADDR_FLEX
c758e947	72	struct onenand_chip *this = &onenand_chip;
b821cead	73	#endif
ea882baf WD	74	loff_t env_addr = CONFIG_ENV_ADDR;
ea882baf WD	75	size_t retlen;
a9da2b41 KP	76	struct erase_info instr = {
	77	.callback = NULL,
	78	};
ea882baf	79
7ce1526e MV	80	ret = env_export(&env_new);
	81	if (ret)
	82	return ret;
d7e8ce10	83
0e8d1586	84	instr.len = CONFIG_ENV_SIZE;
b821cead	85	#ifdef CONFIG_ENV_ADDR_FLEX
c758e947 AKS	86	if (FLEXONENAND(this)) {
	87	env_addr = CONFIG_ENV_ADDR_FLEX;
	88	instr.len = CONFIG_ENV_SIZE_FLEX;
	89	instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
	90	1 : 0;
	91	}
b821cead	92	#endif
d7e8ce10	93	instr.addr = env_addr;
937076f8	94	instr.mtd = mtd;
dfe64e2c	95	if (mtd_erase(mtd, &instr)) {
48287792	96	printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
d7e8ce10 KP	97	return 1;
	98	}
	99
dfe64e2c	100	if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
cd0f4fa1	101	(u_char *)&env_new)) {
8d2effea	102	printf("OneNAND: write failed at 0x%llx\n", instr.addr);
d7e8ce10 KP	103	return 2;
	104	}
	105
	106	return 0;
	107	}
	108
4415f1d1 SG	109	U_BOOT_ENV_LOCATION(onenand) = {
4415f1d1 SG	110	.location = ENVL_ONENAND,
ac358beb	111	ENV_NAME("OneNAND")
e5bce247 SG	112	.load = env_onenand_load,
e5bce247 SG	113	.save = env_save_ptr(env_onenand_save),
4415f1d1	114	};