[people/ms/u-boot.git] / env / ext4.c

/*
 * (c) Copyright 2016 by VRT Technology
 *
 * Author:
 *  Stuart Longland <stuartl@vrt.com.au>
 *
 * Based on FAT environment driver
 * (c) Copyright 2011 by Tigris Elektronik GmbH
 *
 * Author:
 *  Maximilian Schwerin <mvs@tigris.de>
 *
 * and EXT4 filesystem implementation
 * (C) Copyright 2011 - 2012 Samsung Electronics
 * EXT4 filesystem implementation in Uboot by
 * Uma Shankar <uma.shankar@samsung.com>
 * Manjunatha C Achar <a.manjunatha@samsung.com>
 *
 * 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;

#ifdef CONFIG_CMD_SAVEENV
static int env_ext4_save(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 */

static void env_ext4_load(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,
	.load		= env_ext4_load,
	.save		= env_save_ptr(env_ext4_save),
};
Commit	Line	Data
fd1000b9 SL	1	/*
	2	* (c) Copyright 2016 by VRT Technology
	3	*
	4	* Author:
	5	* Stuart Longland <stuartl@vrt.com.au>
	6	*
	7	* Based on FAT environment driver
	8	* (c) Copyright 2011 by Tigris Elektronik GmbH
	9	*
	10	* Author:
	11	* Maximilian Schwerin <mvs@tigris.de>
	12	*
	13	* and EXT4 filesystem implementation
	14	* (C) Copyright 2011 - 2012 Samsung Electronics
	15	* EXT4 filesystem implementation in Uboot by
	16	* Uma Shankar <uma.shankar@samsung.com>
	17	* Manjunatha C Achar <a.manjunatha@samsung.com>
	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
fd1000b9	40	#ifdef CONFIG_CMD_SAVEENV
e5bce247	41	static int env_ext4_save(void)
fd1000b9 SL	42	{
fd1000b9 SL	43	env_t env_new;
bd62e241	44	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	45	disk_partition_t info;
	46	int dev, part;
	47	int err;
	48
	49	err = env_export(&env_new);
	50	if (err)
	51	return err;
	52
bd62e241	53	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
fd1000b9 SL	54	EXT4_ENV_DEVICE_AND_PART,
	55	&dev_desc, &info, 1);
	56	if (part < 0)
	57	return 1;
	58
bd62e241	59	dev = dev_desc->devnum;
fd1000b9 SL	60	ext4fs_set_blk_dev(dev_desc, &info);
	61
	62	if (!ext4fs_mount(info.size)) {
	63	printf("\n Unable to use %s %s for saveenv \n",
	64	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
	65	return 1;
	66	}
	67
	68	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
	69	ext4fs_close();
	70
	71	if (err == -1) {
	72	printf("\n Unable to write \"%s\" from %s%d:%d \n",
	73	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
	74	return 1;
	75	}
	76
	77	puts("done\n");
	78	return 0;
	79	}
	80	#endif /* CONFIG_CMD_SAVEENV */
	81
e5bce247	82	static void env_ext4_load(void)
fd1000b9 SL	83	{
fd1000b9 SL	84	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
bd62e241	85	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	86	disk_partition_t info;
	87	int dev, part;
	88	int err;
bd62e241	89	loff_t off;
fd1000b9	90
bd62e241	91	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
fd1000b9 SL	92	EXT4_ENV_DEVICE_AND_PART,
	93	&dev_desc, &info, 1);
	94	if (part < 0)
	95	goto err_env_relocate;
	96
bd62e241	97	dev = dev_desc->devnum;
fd1000b9 SL	98	ext4fs_set_blk_dev(dev_desc, &info);
	99
	100	if (!ext4fs_mount(info.size)) {
	101	printf("\n Unable to use %s %s for loading the env \n",
	102	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
	103	goto err_env_relocate;
	104	}
	105
bd62e241	106	err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
fd1000b9 SL	107	ext4fs_close();
	108
	109	if (err == -1) {
	110	printf("\n Unable to read \"%s\" from %s%d:%d \n",
	111	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
	112	goto err_env_relocate;
	113	}
	114
	115	env_import(buf, 1);
	116	return;
	117
	118	err_env_relocate:
	119	set_default_env(NULL);
	120	}
4415f1d1 SG	121
	122	U_BOOT_ENV_LOCATION(ext4) = {
	123	.location = ENVL_EXT4,
e5bce247 SG	124	.load = env_ext4_load,
e5bce247 SG	125	.save = env_save_ptr(env_ext4_save),
4415f1d1	126	};