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

/*
 * (c) Copyright 2011 by Tigris Elektronik GmbH
 *
 * Author:
 *  Maximilian Schwerin <mvs@tigris.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#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;

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;
	block_dev_desc_t *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 = get_device_and_partition(FAT_ENV_INTERFACE,
					FAT_ENV_DEVICE_AND_PART,
					&dev_desc, &info, 1);
	if (part < 0)
		return 1;

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

	err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, 0, sizeof(env_t),
			     &size);
	if (err == -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)
{
	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	block_dev_desc_t *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;

	part = get_device_and_partition(FAT_ENV_INTERFACE,
					FAT_ENV_DEVICE_AND_PART,
					&dev_desc, &info, 1);
	if (part < 0)
		goto err_env_relocate;

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

	err = file_fat_read(FAT_ENV_FILE, buf, CONFIG_ENV_SIZE);
	if (err == -1) {
		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
			FAT_ENV_FILE, FAT_ENV_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 <mvs@tigris.de>
	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>
	16	#include <search.h>
	17	#include <errno.h>
	18	#include <fat.h>
	19	#include <mmc.h>
	20
	21	char *env_name_spec = "FAT";
	22
	23	env_t *env_ptr;
	24
	25	DECLARE_GLOBAL_DATA_PTR;
	26
57210c7c MS	27	int env_init(void)
	28	{
	29	/* use default */
	30	gd->env_addr = (ulong)&default_environment[0];
	31	gd->env_valid = 1;
	32
	33	return 0;
	34	}
	35
	36	#ifdef CONFIG_CMD_SAVEENV
	37	int saveenv(void)
	38	{
cd0f4fa1	39	env_t env_new;
57210c7c	40	block_dev_desc_t *dev_desc = NULL;
be354c1a WJ	41	disk_partition_t info;
be354c1a WJ	42	int dev, part;
9aa90c1d	43	int err;
1ad0b98a	44	loff_t size;
57210c7c	45
7ce1526e MV	46	err = env_export(&env_new);
	47	if (err)
	48	return err;
57210c7c	49
be354c1a WJ	50	part = get_device_and_partition(FAT_ENV_INTERFACE,
	51	FAT_ENV_DEVICE_AND_PART,
	52	&dev_desc, &info, 1);
	53	if (part < 0)
57210c7c	54	return 1;
9aa90c1d	55
be354c1a WJ	56	dev = dev_desc->dev;
	57	if (fat_set_blk_dev(dev_desc, &info) != 0) {
	58	printf("\n Unable to use %s %d:%d for saveenv \n",
	59	FAT_ENV_INTERFACE, dev, part);
57210c7c MS	60	return 1;
	61	}
	62
1ad0b98a SR	63	err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, 0, sizeof(env_t),
1ad0b98a SR	64	&size);
9aa90c1d	65	if (err == -1) {
57210c7c MS	66	printf("\n Unable to write \"%s\" from %s%d:%d \n",
	67	FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
	68	return 1;
	69	}
	70
	71	puts("done\n");
	72	return 0;
	73	}
	74	#endif /* CONFIG_CMD_SAVEENV */
	75
	76	void env_relocate_spec(void)
	77	{
6d1966e1	78	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
57210c7c	79	block_dev_desc_t *dev_desc = NULL;
be354c1a WJ	80	disk_partition_t info;
be354c1a WJ	81	int dev, part;
9aa90c1d	82	int err;
57210c7c	83
be354c1a WJ	84	part = get_device_and_partition(FAT_ENV_INTERFACE,
	85	FAT_ENV_DEVICE_AND_PART,
	86	&dev_desc, &info, 1);
	87	if (part < 0)
	88	goto err_env_relocate;
	89
	90	dev = dev_desc->dev;
	91	if (fat_set_blk_dev(dev_desc, &info) != 0) {
	92	printf("\n Unable to use %s %d:%d for loading the env \n",
	93	FAT_ENV_INTERFACE, dev, part);
	94	goto err_env_relocate;
57210c7c MS	95	}
57210c7c MS	96
6d1966e1	97	err = file_fat_read(FAT_ENV_FILE, buf, CONFIG_ENV_SIZE);
9aa90c1d	98	if (err == -1) {
57210c7c MS	99	printf("\n Unable to read \"%s\" from %s%d:%d \n",
57210c7c MS	100	FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
be354c1a	101	goto err_env_relocate;
57210c7c MS	102	}
	103
	104	env_import(buf, 1);
be354c1a WJ	105	return;
	106
	107	err_env_relocate:
	108	set_default_env(NULL);
57210c7c	109	}