[J-u-boot.git] / common / 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 <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 = 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;

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

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

	dev = dev_desc->dev;
	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);
	block_dev_desc_t *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;

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

	dev = dev_desc->dev;
	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);
	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);
}
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>
	28	#include <search.h>
	29	#include <errno.h>
	30	#include <ext4fs.h>
	31	#include <mmc.h>
	32
	33	char *env_name_spec = "EXT4";
	34
	35	env_t *env_ptr;
	36
	37	DECLARE_GLOBAL_DATA_PTR;
	38
	39	int env_init(void)
	40	{
	41	/* use default */
	42	gd->env_addr = (ulong)&default_environment[0];
	43	gd->env_valid = 1;
	44
	45	return 0;
	46	}
	47
	48	#ifdef CONFIG_CMD_SAVEENV
	49	int saveenv(void)
	50	{
	51	env_t env_new;
	52	block_dev_desc_t *dev_desc = NULL;
	53	disk_partition_t info;
	54	int dev, part;
	55	int err;
	56
	57	err = env_export(&env_new);
	58	if (err)
	59	return err;
	60
	61	part = get_device_and_partition(EXT4_ENV_INTERFACE,
	62	EXT4_ENV_DEVICE_AND_PART,
	63	&dev_desc, &info, 1);
	64	if (part < 0)
65	return 1;
66
67	dev = dev_desc->dev;
68	ext4fs_set_blk_dev(dev_desc, &info);
69
70	if (!ext4fs_mount(info.size)) {
71	printf("\n Unable to use %s %s for saveenv \n",
72	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
73	return 1;
74	}
75
76	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
77	ext4fs_close();
78
79	if (err == -1) {
80	printf("\n Unable to write \"%s\" from %s%d:%d \n",
81	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
82	return 1;
83	}
84
85	puts("done\n");
86	return 0;
87	}
88	#endif /* CONFIG_CMD_SAVEENV */
89
90	void env_relocate_spec(void)
91	{
92	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
93	block_dev_desc_t *dev_desc = NULL;
94	disk_partition_t info;
95	int dev, part;
96	int err;
97
98	part = get_device_and_partition(EXT4_ENV_INTERFACE,
99	EXT4_ENV_DEVICE_AND_PART,
100	&dev_desc, &info, 1);
101	if (part < 0)
102	goto err_env_relocate;
103
104	dev = dev_desc->dev;
105	ext4fs_set_blk_dev(dev_desc, &info);
106
107	if (!ext4fs_mount(info.size)) {
108	printf("\n Unable to use %s %s for loading the env \n",
109	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
110	goto err_env_relocate;
111	}
112
113	err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE);
114	ext4fs_close();
115
116	if (err == -1) {
117	printf("\n Unable to read \"%s\" from %s%d:%d \n",
118	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
119	goto err_env_relocate;
120	}
121
122	env_import(buf, 1);
123	return;
124
125	err_env_relocate:
126	set_default_env(NULL);
127	}