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

/*
 * (C) Copyright 2008-2011 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* #define DEBUG */

#include <common.h>

#include <command.h>
#include <environment.h>
#include <fdtdec.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <memalign.h>
#include <mmc.h>
#include <search.h>
#include <errno.h>

#if defined(CONFIG_ENV_SIZE_REDUND) &&  \
	(CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
#endif

char *env_name_spec = "MMC";

#ifdef ENV_IS_EMBEDDED
env_t *env_ptr = &environment;
#else /* ! ENV_IS_EMBEDDED */
env_t *env_ptr;
#endif /* ENV_IS_EMBEDDED */

DECLARE_GLOBAL_DATA_PTR;

#if !defined(CONFIG_ENV_OFFSET)
#define CONFIG_ENV_OFFSET 0
#endif

#if CONFIG_IS_ENABLED(OF_CONTROL)
static inline s64 mmc_offset(int copy)
{
	const char *propname = "u-boot,mmc-env-offset";
	s64 defvalue = CONFIG_ENV_OFFSET;

#if defined(CONFIG_ENV_OFFSET_REDUND)
	if (copy) {
		propname = "u-boot,mmc-env-offset-redundant";
		defvalue = CONFIG_ENV_OFFSET_REDUND;
	}
#endif

	return fdtdec_get_config_int(gd->fdt_blob, propname, defvalue);
}
#else
static inline s64 mmc_offset(int copy)
{
	s64 offset = CONFIG_ENV_OFFSET;

#if defined(CONFIG_ENV_OFFSET_REDUND)
	if (copy)
		offset = CONFIG_ENV_OFFSET_REDUND;
#endif
	return offset;
}
#endif

__weak int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr)
{
	s64 offset = mmc_offset(copy);

	if (offset < 0)
		offset += mmc->capacity;

	*env_addr = offset;

	return 0;
}

__weak int mmc_get_env_dev(void)
{
	return CONFIG_SYS_MMC_ENV_DEV;
}

#ifdef CONFIG_SYS_MMC_ENV_PART
__weak uint mmc_get_env_part(struct mmc *mmc)
{
	return CONFIG_SYS_MMC_ENV_PART;
}

static unsigned char env_mmc_orig_hwpart;

static int mmc_set_env_part(struct mmc *mmc)
{
	uint part = mmc_get_env_part(mmc);
	int dev = mmc_get_env_dev();
	int ret = 0;

	env_mmc_orig_hwpart = mmc_get_blk_desc(mmc)->hwpart;
	ret = blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part);
	if (ret)
		puts("MMC partition switch failed\n");

	return ret;
}
#else
static inline int mmc_set_env_part(struct mmc *mmc) {return 0; };
#endif

static const char *init_mmc_for_env(struct mmc *mmc)
{
	if (!mmc)
		return "!No MMC card found";

#ifdef CONFIG_BLK
	struct udevice *dev;

	if (blk_get_from_parent(mmc->dev, &dev))
		return "!No block device";
#else
	if (mmc_init(mmc))
		return "!MMC init failed";
#endif
	if (mmc_set_env_part(mmc))
		return "!MMC partition switch failed";

	return NULL;
}

static void fini_mmc_for_env(struct mmc *mmc)
{
#ifdef CONFIG_SYS_MMC_ENV_PART
	int dev = mmc_get_env_dev();

	blk_select_hwpart_devnum(IF_TYPE_MMC, dev, env_mmc_orig_hwpart);
#endif
}

#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_SPL_BUILD)
static inline int write_env(struct mmc *mmc, unsigned long size,
			    unsigned long offset, const void *buffer)
{
	uint blk_start, blk_cnt, n;
	struct blk_desc *desc = mmc_get_blk_desc(mmc);

	blk_start	= ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
	blk_cnt		= ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len;

	n = blk_dwrite(desc, blk_start, blk_cnt, (u_char *)buffer);

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

static int env_mmc_save(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	int dev = mmc_get_env_dev();
	struct mmc *mmc = find_mmc_device(dev);
	u32	offset;
	int	ret, copy = 0;
	const char *errmsg;

	errmsg = init_mmc_for_env(mmc);
	if (errmsg) {
		printf("%s\n", errmsg);
		return 1;
	}

	ret = env_export(env_new);
	if (ret)
		goto fini;

#ifdef CONFIG_ENV_OFFSET_REDUND
	if (gd->env_valid == ENV_VALID)
		copy = 1;
#endif

	if (mmc_get_env_addr(mmc, copy, &offset)) {
		ret = 1;
		goto fini;
	}

	printf("Writing to %sMMC(%d)... ", copy ? "redundant " : "", dev);
	if (write_env(mmc, CONFIG_ENV_SIZE, offset, (u_char *)env_new)) {
		puts("failed\n");
		ret = 1;
		goto fini;
	}

	puts("done\n");
	ret = 0;

#ifdef CONFIG_ENV_OFFSET_REDUND
	gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
#endif

fini:
	fini_mmc_for_env(mmc);
	return ret;
}
#endif /* CONFIG_CMD_SAVEENV && !CONFIG_SPL_BUILD */

static inline int read_env(struct mmc *mmc, unsigned long size,
			   unsigned long offset, const void *buffer)
{
	uint blk_start, blk_cnt, n;
	struct blk_desc *desc = mmc_get_blk_desc(mmc);

	blk_start	= ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
	blk_cnt		= ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;

	n = blk_dread(desc, blk_start, blk_cnt, (uchar *)buffer);

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

#ifdef CONFIG_ENV_OFFSET_REDUND
static void env_mmc_load(void)
{
#if !defined(ENV_IS_EMBEDDED)
	struct mmc *mmc;
	u32 offset1, offset2;
	int read1_fail = 0, read2_fail = 0;
	int ret;
	int dev = mmc_get_env_dev();
	const char *errmsg = NULL;

	ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env1, 1);
	ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env2, 1);

	mmc = find_mmc_device(dev);

	errmsg = init_mmc_for_env(mmc);
	if (errmsg) {
		ret = 1;
		goto err;
	}

	if (mmc_get_env_addr(mmc, 0, &offset1) ||
	    mmc_get_env_addr(mmc, 1, &offset2)) {
		ret = 1;
		goto fini;
	}

	read1_fail = read_env(mmc, CONFIG_ENV_SIZE, offset1, tmp_env1);
	read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2);

	if (read1_fail && read2_fail)
		puts("*** Error - No Valid Environment Area found\n");
	else if (read1_fail || read2_fail)
		puts("*** Warning - some problems detected "
		     "reading environment; recovered successfully\n");

	if (read1_fail && read2_fail) {
		errmsg = "!bad CRC";
		ret = 1;
		goto fini;
	} else if (!read1_fail && read2_fail) {
		gd->env_valid = ENV_VALID;
		env_import((char *)tmp_env1, 1);
	} else if (read1_fail && !read2_fail) {
		gd->env_valid = ENV_REDUND;
		env_import((char *)tmp_env2, 1);
	} else {
		env_import_redund((char *)tmp_env1, (char *)tmp_env2);
	}

	ret = 0;

fini:
	fini_mmc_for_env(mmc);
err:
	if (ret)
		set_default_env(errmsg);
#endif
}
#else /* ! CONFIG_ENV_OFFSET_REDUND */
static void env_mmc_load(void)
{
#if !defined(ENV_IS_EMBEDDED)
	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	struct mmc *mmc;
	u32 offset;
	int ret;
	int dev = mmc_get_env_dev();
	const char *errmsg;

	mmc = find_mmc_device(dev);

	errmsg = init_mmc_for_env(mmc);
	if (errmsg) {
		ret = 1;
		goto err;
	}

	if (mmc_get_env_addr(mmc, 0, &offset)) {
		ret = 1;
		goto fini;
	}

	if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf)) {
		errmsg = "!read failed";
		ret = 1;
		goto fini;
	}

	env_import(buf, 1);
	ret = 0;

fini:
	fini_mmc_for_env(mmc);
err:
	if (ret)
		set_default_env(errmsg);
#endif
}
#endif /* CONFIG_ENV_OFFSET_REDUND */

U_BOOT_ENV_LOCATION(mmc) = {
	.location	= ENVL_MMC,
	.load		= env_mmc_load,
#ifndef CONFIG_SPL_BUILD
	.save		= env_save_ptr(env_mmc_save),
#endif
};
Commit	Line	Data
a8060359	1	/*
97039ab9	2	* (C) Copyright 2008-2011 Freescale Semiconductor, Inc.
a8060359	3	*
3765b3e7	4	* SPDX-License-Identifier: GPL-2.0+
a8060359 TL	5	*/
	6
	7	/* #define DEBUG */
	8
	9	#include <common.h>
	10
	11	#include <command.h>
	12	#include <environment.h>
f8b8a554	13	#include <fdtdec.h>
a8060359 TL	14	#include <linux/stddef.h>
a8060359 TL	15	#include <malloc.h>
cf92e05c	16	#include <memalign.h>
a8060359	17	#include <mmc.h>
6d1d51b3	18	#include <search.h>
e79f4839	19	#include <errno.h>
a8060359	20
d196bd88 MH	21	#if defined(CONFIG_ENV_SIZE_REDUND) && \
	22	(CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
	23	#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
	24	#endif
	25
a8060359 TL	26	char *env_name_spec = "MMC";
	27
	28	#ifdef ENV_IS_EMBEDDED
994bc671	29	env_t *env_ptr = &environment;
a8060359	30	#else /* ! ENV_IS_EMBEDDED */
e8db8f71	31	env_t *env_ptr;
a8060359 TL	32	#endif /* ENV_IS_EMBEDDED */
a8060359 TL	33
a8060359 TL	34	DECLARE_GLOBAL_DATA_PTR;
a8060359 TL	35
97039ab9 MH	36	#if !defined(CONFIG_ENV_OFFSET)
	37	#define CONFIG_ENV_OFFSET 0
	38	#endif
	39
f8b8a554 PT	40	#if CONFIG_IS_ENABLED(OF_CONTROL)
	41	static inline s64 mmc_offset(int copy)
	42	{
	43	const char *propname = "u-boot,mmc-env-offset";
	44	s64 defvalue = CONFIG_ENV_OFFSET;
	45
	46	#if defined(CONFIG_ENV_OFFSET_REDUND)
	47	if (copy) {
	48	propname = "u-boot,mmc-env-offset-redundant";
	49	defvalue = CONFIG_ENV_OFFSET_REDUND;
	50	}
	51	#endif
	52
	53	return fdtdec_get_config_int(gd->fdt_blob, propname, defvalue);
	54	}
	55	#else
	56	static inline s64 mmc_offset(int copy)
97039ab9	57	{
f8b8a554	58	s64 offset = CONFIG_ENV_OFFSET;
5c088ee8	59
f8b8a554	60	#if defined(CONFIG_ENV_OFFSET_REDUND)
d196bd88	61	if (copy)
5c088ee8	62	offset = CONFIG_ENV_OFFSET_REDUND;
d196bd88	63	#endif
f8b8a554 PT	64	return offset;
	65	}
	66	#endif
	67
	68	__weak int mmc_get_env_addr(struct mmc mmc, int copy, u32 env_addr)
	69	{
	70	s64 offset = mmc_offset(copy);
5c088ee8 SW	71
	72	if (offset < 0)
	73	offset += mmc->capacity;
	74
	75	*env_addr = offset;
	76
97039ab9 MH	77	return 0;
97039ab9 MH	78	}
97039ab9	79
e92029c0 CG	80	__weak int mmc_get_env_dev(void)
	81	{
	82	return CONFIG_SYS_MMC_ENV_DEV;
	83	}
	84
b9c8ccab	85	#ifdef CONFIG_SYS_MMC_ENV_PART
6e7b7df4 DL	86	__weak uint mmc_get_env_part(struct mmc *mmc)
	87	{
	88	return CONFIG_SYS_MMC_ENV_PART;
	89	}
	90
873cc1d7 SW	91	static unsigned char env_mmc_orig_hwpart;
873cc1d7 SW	92
6e7b7df4 DL	93	static int mmc_set_env_part(struct mmc *mmc)
	94	{
	95	uint part = mmc_get_env_part(mmc);
e92029c0	96	int dev = mmc_get_env_dev();
6e7b7df4	97	int ret = 0;
b9c8ccab	98
69f45cd5 SG	99	env_mmc_orig_hwpart = mmc_get_blk_desc(mmc)->hwpart;
69f45cd5 SG	100	ret = blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part);
873cc1d7 SW	101	if (ret)
873cc1d7 SW	102	puts("MMC partition switch failed\n");
6e7b7df4 DL	103
	104	return ret;
	105	}
	106	#else
	107	static inline int mmc_set_env_part(struct mmc *mmc) {return 0; };
b9c8ccab TR	108	#endif
b9c8ccab TR	109
c75648d7	110	static const char init_mmc_for_env(struct mmc mmc)
6e7b7df4	111	{
c75648d7	112	if (!mmc)
a85da21f	113	return "!No MMC card found";
a8060359	114
01b73fe6 SG	115	#ifdef CONFIG_BLK
	116	struct udevice *dev;
	117
	118	if (blk_get_from_parent(mmc->dev, &dev))
	119	return "!No block device";
	120	#else
c75648d7	121	if (mmc_init(mmc))
a85da21f	122	return "!MMC init failed";
e7017a3c	123	#endif
c75648d7	124	if (mmc_set_env_part(mmc))
a85da21f	125	return "!MMC partition switch failed";
a8060359	126
c75648d7	127	return NULL;
a8060359 TL	128	}
a8060359 TL	129
9404a5fc SW	130	static void fini_mmc_for_env(struct mmc *mmc)
	131	{
	132	#ifdef CONFIG_SYS_MMC_ENV_PART
e92029c0	133	int dev = mmc_get_env_dev();
b9c8ccab	134
69f45cd5	135	blk_select_hwpart_devnum(IF_TYPE_MMC, dev, env_mmc_orig_hwpart);
9404a5fc SW	136	#endif
	137	}
	138
e5bce247	139	#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_SPL_BUILD)
e8db8f71 IG	140	static inline int write_env(struct mmc *mmc, unsigned long size,
e8db8f71 IG	141	unsigned long offset, const void *buffer)
a8060359 TL	142	{
a8060359 TL	143	uint blk_start, blk_cnt, n;
5461acba	144	struct blk_desc *desc = mmc_get_blk_desc(mmc);
a8060359	145
e8db8f71 IG	146	blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
e8db8f71 IG	147	blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len;
a8060359	148
5461acba	149	n = blk_dwrite(desc, blk_start, blk_cnt, (u_char *)buffer);
a8060359 TL	150
	151	return (n == blk_cnt) ? 0 : -1;
	152	}
	153
e5bce247	154	static int env_mmc_save(void)
a8060359	155	{
cd0f4fa1	156	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
e92029c0 CG	157	int dev = mmc_get_env_dev();
e92029c0 CG	158	struct mmc *mmc = find_mmc_device(dev);
e8db8f71	159	u32 offset;
d196bd88	160	int ret, copy = 0;
c75648d7	161	const char *errmsg;
a8060359	162
c75648d7 TH	163	errmsg = init_mmc_for_env(mmc);
	164	if (errmsg) {
	165	printf("%s\n", errmsg);
97039ab9	166	return 1;
c75648d7	167	}
97039ab9	168
7ce1526e MV	169	ret = env_export(env_new);
7ce1526e MV	170	if (ret)
9404a5fc	171	goto fini;
d196bd88 MH	172
d196bd88 MH	173	#ifdef CONFIG_ENV_OFFSET_REDUND
203e94f6	174	if (gd->env_valid == ENV_VALID)
d196bd88 MH	175	copy = 1;
	176	#endif
	177
	178	if (mmc_get_env_addr(mmc, copy, &offset)) {
	179	ret = 1;
	180	goto fini;
	181	}
	182
e92029c0	183	printf("Writing to %sMMC(%d)... ", copy ? "redundant " : "", dev);
4036b630	184	if (write_env(mmc, CONFIG_ENV_SIZE, offset, (u_char *)env_new)) {
a8060359	185	puts("failed\n");
9404a5fc SW	186	ret = 1;
9404a5fc SW	187	goto fini;
a8060359 TL	188	}
	189
	190	puts("done\n");
9404a5fc SW	191	ret = 0;
9404a5fc SW	192
d196bd88	193	#ifdef CONFIG_ENV_OFFSET_REDUND
203e94f6	194	gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
d196bd88 MH	195	#endif
d196bd88 MH	196
9404a5fc SW	197	fini:
	198	fini_mmc_for_env(mmc);
	199	return ret;
a8060359	200	}
e5bce247	201	#endif /* CONFIG_CMD_SAVEENV && !CONFIG_SPL_BUILD */
a8060359	202
e8db8f71 IG	203	static inline int read_env(struct mmc *mmc, unsigned long size,
e8db8f71 IG	204	unsigned long offset, const void *buffer)
a8060359 TL	205	{
a8060359 TL	206	uint blk_start, blk_cnt, n;
5461acba	207	struct blk_desc *desc = mmc_get_blk_desc(mmc);
a8060359	208
e8db8f71 IG	209	blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
e8db8f71 IG	210	blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
a8060359	211
5461acba	212	n = blk_dread(desc, blk_start, blk_cnt, (uchar *)buffer);
a8060359 TL	213
	214	return (n == blk_cnt) ? 0 : -1;
	215	}
	216
d196bd88	217	#ifdef CONFIG_ENV_OFFSET_REDUND
e5bce247	218	static void env_mmc_load(void)
d196bd88 MH	219	{
d196bd88 MH	220	#if !defined(ENV_IS_EMBEDDED)
b9c8ccab	221	struct mmc *mmc;
d196bd88 MH	222	u32 offset1, offset2;
d196bd88 MH	223	int read1_fail = 0, read2_fail = 0;
d196bd88	224	int ret;
e92029c0	225	int dev = mmc_get_env_dev();
c75648d7	226	const char *errmsg = NULL;
d196bd88	227
452a2722 MN	228	ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env1, 1);
	229	ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env2, 1);
	230
b9c8ccab TR	231	mmc = find_mmc_device(dev);
b9c8ccab TR	232
c75648d7 TH	233	errmsg = init_mmc_for_env(mmc);
c75648d7 TH	234	if (errmsg) {
d196bd88 MH	235	ret = 1;
	236	goto err;
	237	}
	238
	239	if (mmc_get_env_addr(mmc, 0, &offset1) \|\|
	240	mmc_get_env_addr(mmc, 1, &offset2)) {
	241	ret = 1;
	242	goto fini;
	243	}
	244
	245	read1_fail = read_env(mmc, CONFIG_ENV_SIZE, offset1, tmp_env1);
	246	read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2);
	247
	248	if (read1_fail && read2_fail)
	249	puts("*** Error - No Valid Environment Area found\n");
	250	else if (read1_fail \|\| read2_fail)
	251	puts("*** Warning - some problems detected "
	252	"reading environment; recovered successfully\n");
	253
9d364af2	254	if (read1_fail && read2_fail) {
c75648d7	255	errmsg = "!bad CRC";
d196bd88 MH	256	ret = 1;
d196bd88 MH	257	goto fini;
9d364af2	258	} else if (!read1_fail && read2_fail) {
203e94f6	259	gd->env_valid = ENV_VALID;
9d364af2 FA	260	env_import((char *)tmp_env1, 1);
9d364af2 FA	261	} else if (read1_fail && !read2_fail) {
203e94f6	262	gd->env_valid = ENV_REDUND;
9d364af2	263	env_import((char *)tmp_env2, 1);
d196bd88	264	} else {
9d364af2	265	env_import_redund((char )tmp_env1, (char )tmp_env2);
d196bd88 MH	266	}
d196bd88 MH	267
d196bd88 MH	268	ret = 0;
	269
	270	fini:
	271	fini_mmc_for_env(mmc);
	272	err:
	273	if (ret)
c75648d7	274	set_default_env(errmsg);
d196bd88 MH	275	#endif
	276	}
	277	#else /* ! CONFIG_ENV_OFFSET_REDUND */
e5bce247	278	static void env_mmc_load(void)
a8060359 TL	279	{
a8060359 TL	280	#if !defined(ENV_IS_EMBEDDED)
cd0f4fa1	281	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
b9c8ccab	282	struct mmc *mmc;
97039ab9	283	u32 offset;
9404a5fc	284	int ret;
e92029c0	285	int dev = mmc_get_env_dev();
c75648d7	286	const char *errmsg;
b9c8ccab	287
b9c8ccab	288	mmc = find_mmc_device(dev);
a8060359	289
c75648d7 TH	290	errmsg = init_mmc_for_env(mmc);
c75648d7 TH	291	if (errmsg) {
9404a5fc SW	292	ret = 1;
	293	goto err;
	294	}
a8060359	295
d196bd88	296	if (mmc_get_env_addr(mmc, 0, &offset)) {
9404a5fc SW	297	ret = 1;
	298	goto fini;
	299	}
	300
cd0f4fa1	301	if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf)) {
c75648d7	302	errmsg = "!read failed";
9404a5fc SW	303	ret = 1;
	304	goto fini;
	305	}
a8060359	306
cd0f4fa1	307	env_import(buf, 1);
9404a5fc SW	308	ret = 0;
	309
	310	fini:
	311	fini_mmc_for_env(mmc);
	312	err:
	313	if (ret)
c75648d7	314	set_default_env(errmsg);
a8060359 TL	315	#endif
a8060359 TL	316	}
d196bd88	317	#endif /* CONFIG_ENV_OFFSET_REDUND */
4415f1d1 SG	318
	319	U_BOOT_ENV_LOCATION(mmc) = {
	320	.location = ENVL_MMC,
e5bce247	321	.load = env_mmc_load,
4415f1d1	322	#ifndef CONFIG_SPL_BUILD
e5bce247	323	.save = env_save_ptr(env_mmc_save),
4415f1d1	324	#endif
4415f1d1	325	};