[J-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 <env.h>
#include <env_internal.h>
#include <linux/stddef.h>
#include <errno.h>
#include <memalign.h>
#include <sata.h>
#include <search.h>

#if 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, (u_char *)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)) {
		env_set_default(NULL, 0);
		return -EIO;
	}

	return env_import(buf, 1, H_EXTERNAL);
}

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>
0ac7d722	11	#include <env.h>
f3998fdc	12	#include <env_internal.h>
125d193c PF	13	#include <linux/stddef.h>
	14	#include <errno.h>
	15	#include <memalign.h>
	16	#include <sata.h>
	17	#include <search.h>
	18
a8992e78	19	#if defined(CONFIG_ENV_OFFSET_REDUND)
125d193c PF	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	__weak int sata_get_env_dev(void)
	28	{
	29	return CONFIG_SYS_SATA_ENV_DEV;
	30	}
	31
125d193c PF	32	#ifdef CONFIG_CMD_SAVEENV
	33	static inline int write_env(struct blk_desc *sata, unsigned long size,
	34	unsigned long offset, void *buffer)
	35	{
	36	uint blk_start, blk_cnt, n;
	37
	38	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	39	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	40
	41	n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
	42
	43	return (n == blk_cnt) ? 0 : -1;
	44	}
	45
e5bce247	46	static int env_sata_save(void)
125d193c PF	47	{
	48	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	49	struct blk_desc *sata = NULL;
	50	int env_sata, ret;
	51
	52	if (sata_initialize())
	53	return 1;
	54
	55	env_sata = sata_get_env_dev();
	56
	57	sata = sata_get_dev(env_sata);
	58	if (sata == NULL) {
	59	printf("Unknown SATA(%d) device for environment!\n",
	60	env_sata);
	61	return 1;
	62	}
	63
	64	ret = env_export(env_new);
	65	if (ret)
	66	return 1;
	67
	68	printf("Writing to SATA(%d)...", env_sata);
17be909a	69	if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, (u_char *)env_new)) {
125d193c PF	70	puts("failed\n");
	71	return 1;
	72	}
	73
	74	puts("done\n");
	75	return 0;
	76	}
	77	#endif /* CONFIG_CMD_SAVEENV */
	78
	79	static inline int read_env(struct blk_desc *sata, unsigned long size,
	80	unsigned long offset, void *buffer)
	81	{
	82	uint blk_start, blk_cnt, n;
	83
	84	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	85	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	86
	87	n = blk_dread(sata, blk_start, blk_cnt, buffer);
	88
	89	return (n == blk_cnt) ? 0 : -1;
	90	}
	91
e5bce247	92	static void env_sata_load(void)
125d193c PF	93	{
	94	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	95	struct blk_desc *sata = NULL;
	96	int env_sata;
	97
	98	if (sata_initialize())
c5951991	99	return -EIO;
125d193c PF	100
	101	env_sata = sata_get_env_dev();
	102
	103	sata = sata_get_dev(env_sata);
	104	if (sata == NULL) {
c5951991 SG	105	printf("Unknown SATA(%d) device for environment!\n", env_sata);
c5951991 SG	106	return -EIO;
125d193c PF	107	}
125d193c PF	108
c5951991	109	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
0ac7d722	110	env_set_default(NULL, 0);
c5951991 SG	111	return -EIO;
c5951991 SG	112	}
125d193c	113
890feeca	114	return env_import(buf, 1, H_EXTERNAL);
125d193c	115	}
4415f1d1 SG	116
	117	U_BOOT_ENV_LOCATION(sata) = {
	118	.location = ENVL_ESATA,
ac358beb	119	ENV_NAME("SATA")
e5bce247 SG	120	.load = env_sata_load,
e5bce247 SG	121	.save = env_save_ptr(env_sata_save),
4415f1d1	122	};