[people/ms/u-boot.git] / common / 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

char *env_name_spec = "SATA";

DECLARE_GLOBAL_DATA_PTR;

__weak int sata_get_env_dev(void)
{
	return CONFIG_SYS_SATA_ENV_DEV;
}

int env_init(void)
{
	/* use default */
	gd->env_addr = (ulong)&default_environment[0];
	gd->env_valid = 1;

	return 0;
}

#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;
}

int saveenv(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;
}

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

	if (sata_initialize())
		return;

	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;
	}

	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf))
		return set_default_env(NULL);

	env_import(buf, 1);
}
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
	27	char *env_name_spec = "SATA";
	28
	29	DECLARE_GLOBAL_DATA_PTR;
	30
	31	__weak int sata_get_env_dev(void)
	32	{
	33	return CONFIG_SYS_SATA_ENV_DEV;
	34	}
	35
	36	int env_init(void)
	37	{
	38	/* use default */
	39	gd->env_addr = (ulong)&default_environment[0];
	40	gd->env_valid = 1;
	41
	42	return 0;
	43	}
	44
	45	#ifdef CONFIG_CMD_SAVEENV
	46	static inline int write_env(struct blk_desc *sata, unsigned long size,
	47	unsigned long offset, void *buffer)
	48	{
	49	uint blk_start, blk_cnt, n;
	50
	51	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
	52	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
	53
	54	n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
	55
	56	return (n == blk_cnt) ? 0 : -1;
	57	}
	58
	59	int saveenv(void)
	60	{
	61	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	62	struct blk_desc *sata = NULL;
	63	int env_sata, ret;
	64
65	if (sata_initialize())
66	return 1;
67
68	env_sata = sata_get_env_dev();
69
70	sata = sata_get_dev(env_sata);
71	if (sata == NULL) {
72	printf("Unknown SATA(%d) device for environment!\n",
73	env_sata);
74	return 1;
75	}
76
77	ret = env_export(env_new);
78	if (ret)
79	return 1;
80
81	printf("Writing to SATA(%d)...", env_sata);
82	if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
83	puts("failed\n");
84	return 1;
85	}
86
87	puts("done\n");
88	return 0;
89	}
90	#endif /* CONFIG_CMD_SAVEENV */
91
92	static inline int read_env(struct blk_desc *sata, unsigned long size,
93	unsigned long offset, void *buffer)
94	{
95	uint blk_start, blk_cnt, n;
96
97	blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
98	blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
99
100	n = blk_dread(sata, blk_start, blk_cnt, buffer);
101
102	return (n == blk_cnt) ? 0 : -1;
103	}
104
105	void env_relocate_spec(void)
106	{
107	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
108	struct blk_desc *sata = NULL;
109	int env_sata;
110
111	if (sata_initialize())
112	return;
113
114	env_sata = sata_get_env_dev();
115
116	sata = sata_get_dev(env_sata);
117	if (sata == NULL) {
118	printf("Unknown SATA(%d) device for environment!\n",
119	env_sata);
120	return;
121	}
122
123	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf))
124	return set_default_env(NULL);
125
126	env_import(buf, 1);
127	}