[thirdparty/u-boot.git] / env / sata.c

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

/* #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

__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, 0);
		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
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
125d193c PF	2	/*
125d193c PF	3	* (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
125d193c PF	4	*/
	5
	6	/* #define DEBUG */
	7
	8	#include <common.h>
	9
	10	#include <command.h>
	11	#include <environment.h>
	12	#include <linux/stddef.h>
	13	#include <errno.h>
	14	#include <memalign.h>
	15	#include <sata.h>
	16	#include <search.h>
	17
	18	#if defined(CONFIG_ENV_SIZE_REDUND) \|\| defined(CONFIG_ENV_OFFSET_REDUND)
	19	#error ENV REDUND not supported
	20	#endif
	21
	22	#if !defined(CONFIG_ENV_OFFSET) \|\| !defined(CONFIG_ENV_SIZE)
	23	#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
	24	#endif
	25
125d193c PF	26	__weak int sata_get_env_dev(void)
	27	{
	28	return CONFIG_SYS_SATA_ENV_DEV;
	29	}
	30
125d193c PF	31	#ifdef CONFIG_CMD_SAVEENV
	32	static inline int write_env(struct blk_desc *sata, unsigned long size,
	33	unsigned long offset, void *buffer)
	34	{
	35	uint blk_start, blk_cnt, n;
	36
	37	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	38	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	39
	40	n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
	41
	42	return (n == blk_cnt) ? 0 : -1;
	43	}
	44
e5bce247	45	static int env_sata_save(void)
125d193c PF	46	{
	47	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	48	struct blk_desc *sata = NULL;
	49	int env_sata, ret;
	50
	51	if (sata_initialize())
	52	return 1;
	53
	54	env_sata = sata_get_env_dev();
	55
	56	sata = sata_get_dev(env_sata);
	57	if (sata == NULL) {
	58	printf("Unknown SATA(%d) device for environment!\n",
	59	env_sata);
	60	return 1;
	61	}
	62
	63	ret = env_export(env_new);
	64	if (ret)
	65	return 1;
	66
	67	printf("Writing to SATA(%d)...", env_sata);
	68	if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
	69	puts("failed\n");
	70	return 1;
	71	}
	72
	73	puts("done\n");
	74	return 0;
	75	}
	76	#endif /* CONFIG_CMD_SAVEENV */
	77
	78	static inline int read_env(struct blk_desc *sata, unsigned long size,
	79	unsigned long offset, void *buffer)
	80	{
	81	uint blk_start, blk_cnt, n;
	82
	83	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	84	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	85
	86	n = blk_dread(sata, blk_start, blk_cnt, buffer);
	87
	88	return (n == blk_cnt) ? 0 : -1;
	89	}
	90
e5bce247	91	static void env_sata_load(void)
125d193c PF	92	{
	93	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	94	struct blk_desc *sata = NULL;
	95	int env_sata;
	96
	97	if (sata_initialize())
c5951991	98	return -EIO;
125d193c PF	99
	100	env_sata = sata_get_env_dev();
	101
	102	sata = sata_get_dev(env_sata);
	103	if (sata == NULL) {
c5951991 SG	104	printf("Unknown SATA(%d) device for environment!\n", env_sata);
c5951991 SG	105	return -EIO;
125d193c PF	106	}
125d193c PF	107
c5951991	108	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
c5d548a9	109	set_default_env(NULL, 0);
c5951991 SG	110	return -EIO;
c5951991 SG	111	}
125d193c	112
2166ebf7	113	return env_import(buf, 1);
125d193c	114	}
4415f1d1 SG	115
	116	U_BOOT_ENV_LOCATION(sata) = {
	117	.location = ENVL_ESATA,
ac358beb	118	ENV_NAME("SATA")
e5bce247 SG	119	.load = env_sata_load,
e5bce247 SG	120	.save = env_save_ptr(env_sata_save),
4415f1d1	121	};