[J-u-boot.git] / env / ext4.c

/*
 * (c) Copyright 2016 by VRT Technology
 *
 * Author:
 *  Stuart Longland <[email protected]>
 *
 * Based on FAT environment driver
 * (c) Copyright 2011 by Tigris Elektronik GmbH
 *
 * Author:
 *  Maximilian Schwerin <[email protected]>
 *
 * and EXT4 filesystem implementation
 * (C) Copyright 2011 - 2012 Samsung Electronics
 * EXT4 filesystem implementation in Uboot by
 * Uma Shankar <[email protected]>
 * Manjunatha C Achar <[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 <ext4fs.h>
#include <mmc.h>

char *env_name_spec = "EXT4";

env_t *env_ptr;

DECLARE_GLOBAL_DATA_PTR;

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

	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;

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

	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
					EXT4_ENV_DEVICE_AND_PART,
					&dev_desc, &info, 1);
	if (part < 0)
		return 1;

	dev = dev_desc->devnum;
	ext4fs_set_blk_dev(dev_desc, &info);

	if (!ext4fs_mount(info.size)) {
		printf("\n** Unable to use %s %s for saveenv **\n",
		       EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
		return 1;
	}

	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
	ext4fs_close();

	if (err == -1) {
		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
			EXT4_ENV_FILE, EXT4_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);
	struct blk_desc *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;
	loff_t off;

	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
					EXT4_ENV_DEVICE_AND_PART,
					&dev_desc, &info, 1);
	if (part < 0)
		goto err_env_relocate;

	dev = dev_desc->devnum;
	ext4fs_set_blk_dev(dev_desc, &info);

	if (!ext4fs_mount(info.size)) {
		printf("\n** Unable to use %s %s for loading the env **\n",
		       EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
		goto err_env_relocate;
	}

	err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
	ext4fs_close();

	if (err == -1) {
		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
			EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
		goto err_env_relocate;
	}

	env_import(buf, 1);
	return;

err_env_relocate:
	set_default_env(NULL);
}

U_BOOT_ENV_LOCATION(ext4) = {
	.location	= ENVL_EXT4,
	.get_char	= env_get_char_spec,
	.load		= env_relocate_spec,
	.save		= env_save_ptr(saveenv),
	.init		= env_init,
};
Commit	Line	Data
fd1000b9 SL	1	/*
	2	* (c) Copyright 2016 by VRT Technology
	3	*
	4	* Author:
	5	* Stuart Longland <[email protected]>
	6	*
	7	* Based on FAT environment driver
	8	* (c) Copyright 2011 by Tigris Elektronik GmbH
	9	*
	10	* Author:
	11	* Maximilian Schwerin <[email protected]>
	12	*
	13	* and EXT4 filesystem implementation
	14	* (C) Copyright 2011 - 2012 Samsung Electronics
	15	* EXT4 filesystem implementation in Uboot by
	16	* Uma Shankar <[email protected]>
	17	* Manjunatha C Achar <[email protected]>
	18	*
	19	* SPDX-License-Identifier: GPL-2.0+
	20	*/
	21
	22	#include <common.h>
	23
	24	#include <command.h>
	25	#include <environment.h>
	26	#include <linux/stddef.h>
	27	#include <malloc.h>
bd62e241	28	#include <memalign.h>
fd1000b9 SL	29	#include <search.h>
	30	#include <errno.h>
	31	#include <ext4fs.h>
	32	#include <mmc.h>
	33
	34	char *env_name_spec = "EXT4";
	35
	36	env_t *env_ptr;
	37
	38	DECLARE_GLOBAL_DATA_PTR;
	39
	40	int env_init(void)
	41	{
	42	/* use default */
	43	gd->env_addr = (ulong)&default_environment[0];
203e94f6	44	gd->env_valid = ENV_VALID;
fd1000b9 SL	45
	46	return 0;
	47	}
	48
	49	#ifdef CONFIG_CMD_SAVEENV
	50	int saveenv(void)
	51	{
	52	env_t env_new;
bd62e241	53	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	54	disk_partition_t info;
	55	int dev, part;
	56	int err;
	57
	58	err = env_export(&env_new);
	59	if (err)
	60	return err;
	61
bd62e241	62	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
fd1000b9 SL	63	EXT4_ENV_DEVICE_AND_PART,
	64	&dev_desc, &info, 1);
	65	if (part < 0)
	66	return 1;
	67
bd62e241	68	dev = dev_desc->devnum;
fd1000b9 SL	69	ext4fs_set_blk_dev(dev_desc, &info);
	70
	71	if (!ext4fs_mount(info.size)) {
	72	printf("\n Unable to use %s %s for saveenv \n",
	73	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
	74	return 1;
	75	}
	76
	77	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
	78	ext4fs_close();
	79
	80	if (err == -1) {
	81	printf("\n Unable to write \"%s\" from %s%d:%d \n",
	82	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
	83	return 1;
	84	}
	85
	86	puts("done\n");
	87	return 0;
	88	}
	89	#endif /* CONFIG_CMD_SAVEENV */
	90
	91	void env_relocate_spec(void)
	92	{
	93	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
bd62e241	94	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	95	disk_partition_t info;
	96	int dev, part;
	97	int err;
bd62e241	98	loff_t off;
fd1000b9	99
bd62e241	100	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
fd1000b9 SL	101	EXT4_ENV_DEVICE_AND_PART,
	102	&dev_desc, &info, 1);
	103	if (part < 0)
	104	goto err_env_relocate;
	105
bd62e241	106	dev = dev_desc->devnum;
fd1000b9 SL	107	ext4fs_set_blk_dev(dev_desc, &info);
	108
	109	if (!ext4fs_mount(info.size)) {
	110	printf("\n Unable to use %s %s for loading the env \n",
	111	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
	112	goto err_env_relocate;
	113	}
	114
bd62e241	115	err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
fd1000b9 SL	116	ext4fs_close();
	117
	118	if (err == -1) {
	119	printf("\n Unable to read \"%s\" from %s%d:%d \n",
	120	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
	121	goto err_env_relocate;
	122	}
	123
	124	env_import(buf, 1);
	125	return;
	126
	127	err_env_relocate:
	128	set_default_env(NULL);
	129	}
4415f1d1 SG	130
	131	U_BOOT_ENV_LOCATION(ext4) = {
	132	.location = ENVL_EXT4,
	133	.get_char = env_get_char_spec,
	134	.load = env_relocate_spec,
	135	.save = env_save_ptr(saveenv),
	136	.init = env_init,
	137	};