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

/*
 * (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* #define DEBUG */

#include <common.h>

#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <errno.h>
#include <memalign.h>
#include <sata.h>
#include <search.h>

#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
#error ENV REDUND not supported
#endif

#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
#endif

DECLARE_GLOBAL_DATA_PTR;

__weak int sata_get_env_dev(void)
{
	return CONFIG_SYS_SATA_ENV_DEV;
}

#ifdef CONFIG_CMD_SAVEENV
static inline int write_env(struct blk_desc *sata, unsigned long size,
			    unsigned long offset, void *buffer)
{
	uint blk_start, blk_cnt, n;

	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	blk_cnt   = ALIGN(size, sata->blksz) / sata->blksz;

	n = blk_dwrite(sata, blk_start, blk_cnt, buffer);

	return (n == blk_cnt) ? 0 : -1;
}

static int env_sata_save(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	struct blk_desc *sata = NULL;
	int env_sata, ret;

	if (sata_initialize())
		return 1;

	env_sata = sata_get_env_dev();

	sata = sata_get_dev(env_sata);
	if (sata == NULL) {
		printf("Unknown SATA(%d) device for environment!\n",
		       env_sata);
		return 1;
	}

	ret = env_export(env_new);
	if (ret)
		return 1;

	printf("Writing to SATA(%d)...", env_sata);
	if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
		puts("failed\n");
		return 1;
	}

	puts("done\n");
	return 0;
}
#endif /* CONFIG_CMD_SAVEENV */

static inline int read_env(struct blk_desc *sata, unsigned long size,
			   unsigned long offset, void *buffer)
{
	uint blk_start, blk_cnt, n;

	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	blk_cnt   = ALIGN(size, sata->blksz) / sata->blksz;

	n = blk_dread(sata, blk_start, blk_cnt, buffer);

	return (n == blk_cnt) ? 0 : -1;
}

static void env_sata_load(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	struct blk_desc *sata = NULL;
	int env_sata;

	if (sata_initialize())
		return -EIO;

	env_sata = sata_get_env_dev();

	sata = sata_get_dev(env_sata);
	if (sata == NULL) {
		printf("Unknown SATA(%d) device for environment!\n", env_sata);
		return -EIO;
	}

	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
		set_default_env(NULL);
		return -EIO;
	}

	return env_import(buf, 1);
}

U_BOOT_ENV_LOCATION(sata) = {
	.location	= ENVL_ESATA,
	ENV_NAME("SATA")
	.load		= env_sata_load,
	.save		= env_save_ptr(env_sata_save),
};
Commit	Line	Data
125d193c PF	1	/*
	2	* (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
	7	/* #define DEBUG */
	8
	9	#include <common.h>
	10
	11	#include <command.h>
	12	#include <environment.h>
	13	#include <linux/stddef.h>
	14	#include <errno.h>
	15	#include <memalign.h>
	16	#include <sata.h>
	17	#include <search.h>
	18
	19	#if defined(CONFIG_ENV_SIZE_REDUND) \|\| defined(CONFIG_ENV_OFFSET_REDUND)
	20	#error ENV REDUND not supported
	21	#endif
	22
	23	#if !defined(CONFIG_ENV_OFFSET) \|\| !defined(CONFIG_ENV_SIZE)
	24	#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
	25	#endif
	26
125d193c PF	27	DECLARE_GLOBAL_DATA_PTR;
	28
	29	__weak int sata_get_env_dev(void)
	30	{
	31	return CONFIG_SYS_SATA_ENV_DEV;
	32	}
	33
125d193c PF	34	#ifdef CONFIG_CMD_SAVEENV
	35	static inline int write_env(struct blk_desc *sata, unsigned long size,
	36	unsigned long offset, void *buffer)
	37	{
	38	uint blk_start, blk_cnt, n;
	39
	40	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	41	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	42
	43	n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
	44
	45	return (n == blk_cnt) ? 0 : -1;
	46	}
	47
e5bce247	48	static int env_sata_save(void)
125d193c PF	49	{
	50	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	51	struct blk_desc *sata = NULL;
	52	int env_sata, ret;
	53
	54	if (sata_initialize())
	55	return 1;
	56
	57	env_sata = sata_get_env_dev();
	58
	59	sata = sata_get_dev(env_sata);
	60	if (sata == NULL) {
	61	printf("Unknown SATA(%d) device for environment!\n",
	62	env_sata);
	63	return 1;
	64	}
	65
	66	ret = env_export(env_new);
	67	if (ret)
	68	return 1;
	69
	70	printf("Writing to SATA(%d)...", env_sata);
	71	if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
	72	puts("failed\n");
	73	return 1;
	74	}
	75
	76	puts("done\n");
	77	return 0;
	78	}
	79	#endif /* CONFIG_CMD_SAVEENV */
	80
	81	static inline int read_env(struct blk_desc *sata, unsigned long size,
	82	unsigned long offset, void *buffer)
	83	{
	84	uint blk_start, blk_cnt, n;
	85
	86	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	87	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	88
	89	n = blk_dread(sata, blk_start, blk_cnt, buffer);
	90
	91	return (n == blk_cnt) ? 0 : -1;
	92	}
	93
e5bce247	94	static void env_sata_load(void)
125d193c PF	95	{
	96	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	97	struct blk_desc *sata = NULL;
	98	int env_sata;
	99
	100	if (sata_initialize())
c5951991	101	return -EIO;
125d193c PF	102
	103	env_sata = sata_get_env_dev();
	104
	105	sata = sata_get_dev(env_sata);
	106	if (sata == NULL) {
c5951991 SG	107	printf("Unknown SATA(%d) device for environment!\n", env_sata);
c5951991 SG	108	return -EIO;
125d193c PF	109	}
125d193c PF	110
c5951991 SG	111	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
	112	set_default_env(NULL);
	113	return -EIO;
	114	}
125d193c	115
2166ebf7	116	return env_import(buf, 1);
125d193c	117	}
4415f1d1 SG	118
	119	U_BOOT_ENV_LOCATION(sata) = {
	120	.location = ENVL_ESATA,
ac358beb	121	ENV_NAME("SATA")
e5bce247 SG	122	.load = env_sata_load,
e5bce247 SG	123	.save = env_save_ptr(env_sata_save),
4415f1d1	124	};