[u-boot.git] / common / env_fat.c

/*
 * (c) Copyright 2011 by Tigris Elektronik GmbH
 *
 * Author:
 *  Maximilian Schwerin <mvs@tigris.de>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>

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

char *env_name_spec = "FAT";

env_t *env_ptr;

DECLARE_GLOBAL_DATA_PTR;

uchar env_get_char_spec(int index)
{
	return *((uchar *)(gd->env_addr + index));
}

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

	return 0;
}

#ifdef CONFIG_CMD_SAVEENV
int saveenv(void)
{
	env_t	env_new;
	ssize_t	len;
	char	*res;
	block_dev_desc_t *dev_desc = NULL;
	int dev = FAT_ENV_DEVICE;
	int part = FAT_ENV_PART;

	res = (char *)&env_new.data;
	len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
	if (len < 0) {
		error("Cannot export environment: errno = %d\n", errno);
		return 1;
	}

#ifdef CONFIG_MMC
	if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
		struct mmc *mmc = find_mmc_device(dev);

		if (!mmc) {
			printf("no mmc device at slot %x\n", dev);
			return 1;
		}

		mmc->has_init = 0;
		mmc_init(mmc);
	}
#endif /* CONFIG_MMC */

	dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
	if (dev_desc == NULL) {
		printf("Failed to find %s%d\n",
			FAT_ENV_INTERFACE, dev);
		return 1;
	}
	if (fat_register_device(dev_desc, part) != 0) {
		printf("Failed to register %s%d:%d\n",
			FAT_ENV_INTERFACE, dev, part);
		return 1;
	}

	env_new.crc = crc32(0, env_new.data, ENV_SIZE);
	if (file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)) == -1) {
		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
			FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
		return 1;
	}

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

void env_relocate_spec(void)
{
	char buf[CONFIG_ENV_SIZE];
	block_dev_desc_t *dev_desc = NULL;
	int dev = FAT_ENV_DEVICE;
	int part = FAT_ENV_PART;

#ifdef CONFIG_MMC
	if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
		struct mmc *mmc = find_mmc_device(dev);

		if (!mmc) {
			printf("no mmc device at slot %x\n", dev);
			set_default_env(NULL);
			return;
		}

		mmc->has_init = 0;
		mmc_init(mmc);
	}
#endif /* CONFIG_MMC */

	dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
	if (dev_desc == NULL) {
		printf("Failed to find %s%d\n",
			FAT_ENV_INTERFACE, dev);
		set_default_env(NULL);
		return;
	}
	if (fat_register_device(dev_desc, part) != 0) {
		printf("Failed to register %s%d:%d\n",
			FAT_ENV_INTERFACE, dev, part);
		set_default_env(NULL);
		return;
	}

	if (file_fat_read(FAT_ENV_FILE, (unsigned char *)&buf, CONFIG_ENV_SIZE) == -1) {
		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
			FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
		set_default_env(NULL);
		return;
	}

	env_import(buf, 1);
}
Commit	Line	Data
57210c7c MS	1	/*
	2	* (c) Copyright 2011 by Tigris Elektronik GmbH
	3	*
	4	* Author:
	5	* Maximilian Schwerin <mvs@tigris.de>
	6	*
	7	* See file CREDITS for list of people who contributed to this
	8	* project.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License as
	12	* published by the Free Software Foundation; either version 2 of
	13	* the License, or (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	23	* MA 02111-1307 USA
	24	*/
	25
	26	#include <common.h>
	27
	28	#include <command.h>
	29	#include <environment.h>
	30	#include <linux/stddef.h>
	31	#include <malloc.h>
	32	#include <search.h>
	33	#include <errno.h>
	34	#include <fat.h>
	35	#include <mmc.h>
	36
	37	char *env_name_spec = "FAT";
	38
	39	env_t *env_ptr;
	40
	41	DECLARE_GLOBAL_DATA_PTR;
	42
	43	uchar env_get_char_spec(int index)
	44	{
	45	return ((uchar )(gd->env_addr + index));
	46	}
	47
	48	int env_init(void)
	49	{
	50	/* use default */
	51	gd->env_addr = (ulong)&default_environment[0];
	52	gd->env_valid = 1;
	53
	54	return 0;
	55	}
	56
	57	#ifdef CONFIG_CMD_SAVEENV
	58	int saveenv(void)
	59	{
	60	env_t env_new;
	61	ssize_t len;
	62	char *res;
	63	block_dev_desc_t *dev_desc = NULL;
	64	int dev = FAT_ENV_DEVICE;
65	int part = FAT_ENV_PART;
66
67	res = (char *)&env_new.data;
68	len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
69	if (len < 0) {
70	error("Cannot export environment: errno = %d\n", errno);
71	return 1;
72	}
73
74	#ifdef CONFIG_MMC
75	if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
76	struct mmc *mmc = find_mmc_device(dev);
77
78	if (!mmc) {
79	printf("no mmc device at slot %x\n", dev);
80	return 1;
81	}
82
83	mmc->has_init = 0;
84	mmc_init(mmc);
85	}
86	#endif /* CONFIG_MMC */
87
88	dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
89	if (dev_desc == NULL) {
90	printf("Failed to find %s%d\n",
91	FAT_ENV_INTERFACE, dev);
92	return 1;
93	}
94	if (fat_register_device(dev_desc, part) != 0) {
95	printf("Failed to register %s%d:%d\n",
96	FAT_ENV_INTERFACE, dev, part);
97	return 1;
98	}
99
100	env_new.crc = crc32(0, env_new.data, ENV_SIZE);
101	if (file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)) == -1) {
102	printf("\n Unable to write \"%s\" from %s%d:%d \n",
103	FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
104	return 1;
105	}
106
107	puts("done\n");
108	return 0;
109	}
110	#endif /* CONFIG_CMD_SAVEENV */
111
112	void env_relocate_spec(void)
113	{
114	char buf[CONFIG_ENV_SIZE];
115	block_dev_desc_t *dev_desc = NULL;
116	int dev = FAT_ENV_DEVICE;
117	int part = FAT_ENV_PART;
118
119	#ifdef CONFIG_MMC
120	if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
121	struct mmc *mmc = find_mmc_device(dev);
122
123	if (!mmc) {
124	printf("no mmc device at slot %x\n", dev);
125	set_default_env(NULL);
126	return;
127	}
128
129	mmc->has_init = 0;
130	mmc_init(mmc);
131	}
132	#endif /* CONFIG_MMC */
133
134	dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
135	if (dev_desc == NULL) {
136	printf("Failed to find %s%d\n",
137	FAT_ENV_INTERFACE, dev);
138	set_default_env(NULL);
139	return;
140	}
141	if (fat_register_device(dev_desc, part) != 0) {
142	printf("Failed to register %s%d:%d\n",
143	FAT_ENV_INTERFACE, dev, part);
144	set_default_env(NULL);
145	return;
146	}
147
148	if (file_fat_read(FAT_ENV_FILE, (unsigned char *)&buf, CONFIG_ENV_SIZE) == -1) {
149	printf("\n Unable to read \"%s\" from %s%d:%d \n",
150	FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
151	set_default_env(NULL);
152	return;
153	}
154
155	env_import(buf, 1);
156	}