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

/*
 * (c) Copyright 2011 by Tigris Elektronik GmbH
 *
 * Author:
 *  Maximilian Schwerin <[email protected]>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>

#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <memalign.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;

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;
	struct blk_desc *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;
	loff_t size;

	err = env_export(&env_new);
	if (err)
		return err;

	part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
					CONFIG_ENV_FAT_DEVICE_AND_PART,
					&dev_desc, &info, 1);
	if (part < 0)
		return 1;

	dev = dev_desc->devnum;
	if (fat_set_blk_dev(dev_desc, &info) != 0) {
		printf("\n** Unable to use %s %d:%d for saveenv **\n",
		       CONFIG_ENV_FAT_INTERFACE, dev, part);
		return 1;
	}

	err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t),
			     &size);
	if (err == -1) {
		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
			CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
		return 1;
	}

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

void env_relocate_spec(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	struct blk_desc *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;

	part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
					CONFIG_ENV_FAT_DEVICE_AND_PART,
					&dev_desc, &info, 1);
	if (part < 0)
		goto err_env_relocate;

	dev = dev_desc->devnum;
	if (fat_set_blk_dev(dev_desc, &info) != 0) {
		printf("\n** Unable to use %s %d:%d for loading the env **\n",
		       CONFIG_ENV_FAT_INTERFACE, dev, part);
		goto err_env_relocate;
	}

	err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE);
	if (err == -1) {
		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
			CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
		goto err_env_relocate;
	}

	env_import(buf, 1);
	return;

err_env_relocate:
	set_default_env(NULL);
}
Commit	Line	Data
57210c7c MS	1	/*
	2	* (c) Copyright 2011 by Tigris Elektronik GmbH
	3	*
	4	* Author:
	5	* Maximilian Schwerin <[email protected]>
	6	*
3765b3e7	7	* SPDX-License-Identifier: GPL-2.0+
57210c7c MS	8	*/
	9
	10	#include <common.h>
	11
	12	#include <command.h>
	13	#include <environment.h>
	14	#include <linux/stddef.h>
	15	#include <malloc.h>
cf92e05c	16	#include <memalign.h>
57210c7c MS	17	#include <search.h>
	18	#include <errno.h>
	19	#include <fat.h>
	20	#include <mmc.h>
	21
	22	char *env_name_spec = "FAT";
	23
	24	env_t *env_ptr;
	25
	26	DECLARE_GLOBAL_DATA_PTR;
	27
57210c7c MS	28	int env_init(void)
	29	{
	30	/* use default */
	31	gd->env_addr = (ulong)&default_environment[0];
	32	gd->env_valid = 1;
	33
	34	return 0;
	35	}
	36
	37	#ifdef CONFIG_CMD_SAVEENV
	38	int saveenv(void)
	39	{
cd0f4fa1	40	env_t env_new;
4101f687	41	struct blk_desc *dev_desc = NULL;
be354c1a WJ	42	disk_partition_t info;
be354c1a WJ	43	int dev, part;
9aa90c1d	44	int err;
1ad0b98a	45	loff_t size;
57210c7c	46
7ce1526e MV	47	err = env_export(&env_new);
	48	if (err)
	49	return err;
57210c7c	50
43ba3c59 TR	51	part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
43ba3c59 TR	52	CONFIG_ENV_FAT_DEVICE_AND_PART,
be354c1a WJ	53	&dev_desc, &info, 1);
be354c1a WJ	54	if (part < 0)
57210c7c	55	return 1;
9aa90c1d	56
bcce53d0	57	dev = dev_desc->devnum;
be354c1a WJ	58	if (fat_set_blk_dev(dev_desc, &info) != 0) {
be354c1a WJ	59	printf("\n Unable to use %s %d:%d for saveenv \n",
43ba3c59	60	CONFIG_ENV_FAT_INTERFACE, dev, part);
57210c7c MS	61	return 1;
	62	}
	63
43ba3c59	64	err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t),
1ad0b98a	65	&size);
9aa90c1d	66	if (err == -1) {
57210c7c	67	printf("\n Unable to write \"%s\" from %s%d:%d \n",
43ba3c59	68	CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
57210c7c MS	69	return 1;
	70	}
	71
	72	puts("done\n");
	73	return 0;
	74	}
	75	#endif /* CONFIG_CMD_SAVEENV */
	76
	77	void env_relocate_spec(void)
	78	{
6d1966e1	79	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
4101f687	80	struct blk_desc *dev_desc = NULL;
be354c1a WJ	81	disk_partition_t info;
be354c1a WJ	82	int dev, part;
9aa90c1d	83	int err;
57210c7c	84
43ba3c59 TR	85	part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
43ba3c59 TR	86	CONFIG_ENV_FAT_DEVICE_AND_PART,
be354c1a WJ	87	&dev_desc, &info, 1);
	88	if (part < 0)
	89	goto err_env_relocate;
	90
bcce53d0	91	dev = dev_desc->devnum;
be354c1a WJ	92	if (fat_set_blk_dev(dev_desc, &info) != 0) {
be354c1a WJ	93	printf("\n Unable to use %s %d:%d for loading the env \n",
43ba3c59	94	CONFIG_ENV_FAT_INTERFACE, dev, part);
be354c1a	95	goto err_env_relocate;
57210c7c MS	96	}
57210c7c MS	97
43ba3c59	98	err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE);
9aa90c1d	99	if (err == -1) {
57210c7c	100	printf("\n Unable to read \"%s\" from %s%d:%d \n",
43ba3c59	101	CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part);
be354c1a	102	goto err_env_relocate;
57210c7c MS	103	}
	104
	105	env_import(buf, 1);
be354c1a WJ	106	return;
	107
	108	err_env_relocate:
	109	set_default_env(NULL);
57210c7c	110	}