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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Stuart Longlandfd1000b2016-02-23 15:51:26 +10002/*
3 * (c) Copyright 2016 by VRT Technology
4 *
5 * Author:
6 * Stuart Longland <stuartl@vrt.com.au>
7 *
8 * Based on FAT environment driver
9 * (c) Copyright 2011 by Tigris Elektronik GmbH
10 *
11 * Author:
12 * Maximilian Schwerin <mvs@tigris.de>
13 *
14 * and EXT4 filesystem implementation
15 * (C) Copyright 2011 - 2012 Samsung Electronics
16 * EXT4 filesystem implementation in Uboot by
17 * Uma Shankar <uma.shankar@samsung.com>
18 * Manjunatha C Achar <a.manjunatha@samsung.com>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100019 */
20
21#include <common.h>
22
23#include <command.h>
24#include <environment.h>
25#include <linux/stddef.h>
26#include <malloc.h>
Andrej Rosanobd62e242016-06-21 17:54:25 +020027#include <memalign.h>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100028#include <search.h>
29#include <errno.h>
30#include <ext4fs.h>
31#include <mmc.h>
32
Stuart Longlandfd1000b2016-02-23 15:51:26 +100033#ifdef CONFIG_CMD_SAVEENV
Simon Glasse5bce242017-08-03 12:22:01 -060034static int env_ext4_save(void)
Stuart Longlandfd1000b2016-02-23 15:51:26 +100035{
36 env_t env_new;
Andrej Rosanobd62e242016-06-21 17:54:25 +020037 struct blk_desc *dev_desc = NULL;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100038 disk_partition_t info;
39 int dev, part;
40 int err;
41
42 err = env_export(&env_new);
43 if (err)
44 return err;
45
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +010046 part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
47 CONFIG_ENV_EXT4_DEVICE_AND_PART,
48 &dev_desc, &info, 1);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100049 if (part < 0)
50 return 1;
51
Andrej Rosanobd62e242016-06-21 17:54:25 +020052 dev = dev_desc->devnum;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100053 ext4fs_set_blk_dev(dev_desc, &info);
54
55 if (!ext4fs_mount(info.size)) {
56 printf("\n** Unable to use %s %s for saveenv **\n",
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +010057 CONFIG_ENV_EXT4_INTERFACE,
58 CONFIG_ENV_EXT4_DEVICE_AND_PART);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100059 return 1;
60 }
61
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +010062 err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new,
63 sizeof(env_t));
Stuart Longlandfd1000b2016-02-23 15:51:26 +100064 ext4fs_close();
65
66 if (err == -1) {
67 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +010068 CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
69 part);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100070 return 1;
71 }
72
73 puts("done\n");
74 return 0;
75}
76#endif /* CONFIG_CMD_SAVEENV */
77
Simon Glassc5951992017-08-03 12:22:17 -060078static int env_ext4_load(void)
Stuart Longlandfd1000b2016-02-23 15:51:26 +100079{
80 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
Andrej Rosanobd62e242016-06-21 17:54:25 +020081 struct blk_desc *dev_desc = NULL;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100082 disk_partition_t info;
83 int dev, part;
84 int err;
Andrej Rosanobd62e242016-06-21 17:54:25 +020085 loff_t off;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100086
Heinrich Schuchardt95058fb2018-04-14 15:41:00 +020087#ifdef CONFIG_MMC
Faiz Abbas26862b42018-02-12 19:24:31 +053088 if (!strcmp(CONFIG_ENV_EXT4_INTERFACE, "mmc"))
89 mmc_initialize(NULL);
Heinrich Schuchardt95058fb2018-04-14 15:41:00 +020090#endif
Faiz Abbas26862b42018-02-12 19:24:31 +053091
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +010092 part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
93 CONFIG_ENV_EXT4_DEVICE_AND_PART,
94 &dev_desc, &info, 1);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100095 if (part < 0)
96 goto err_env_relocate;
97
Andrej Rosanobd62e242016-06-21 17:54:25 +020098 dev = dev_desc->devnum;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100099 ext4fs_set_blk_dev(dev_desc, &info);
100
101 if (!ext4fs_mount(info.size)) {
102 printf("\n** Unable to use %s %s for loading the env **\n",
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +0100103 CONFIG_ENV_EXT4_INTERFACE,
104 CONFIG_ENV_EXT4_DEVICE_AND_PART);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000105 goto err_env_relocate;
106 }
107
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +0100108 err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
109 &off);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000110 ext4fs_close();
111
112 if (err == -1) {
113 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +0100114 CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
115 part);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000116 goto err_env_relocate;
117 }
118
Simon Goldschmidt2166ebf2018-01-31 14:47:12 +0100119 return env_import(buf, 1);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000120
121err_env_relocate:
Yaniv Levinskyc5d548a2018-06-24 19:16:57 +0300122 set_default_env(NULL, 0);
Simon Glassc5951992017-08-03 12:22:17 -0600123
124 return -EIO;
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000125}
Simon Glass4415f1d2017-08-03 12:21:58 -0600126
127U_BOOT_ENV_LOCATION(ext4) = {
128 .location = ENVL_EXT4,
Simon Glassac358be2017-08-03 12:22:03 -0600129 ENV_NAME("EXT4")
Simon Glasse5bce242017-08-03 12:22:01 -0600130 .load = env_ext4_load,
131 .save = env_save_ptr(env_ext4_save),
Simon Glass4415f1d2017-08-03 12:21:58 -0600132};