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Maximilian Schwerin57210c72012-03-12 23:57:50 +00001/*
2 * (c) Copyright 2011 by Tigris Elektronik GmbH
3 *
4 * Author:
5 * Maximilian Schwerin <mvs@tigris.de>
6 *
Wolfgang Denk3765b3e2013-10-07 13:07:26 +02007 * SPDX-License-Identifier: GPL-2.0+
Maximilian Schwerin57210c72012-03-12 23:57:50 +00008 */
9
10#include <common.h>
11
12#include <command.h>
13#include <environment.h>
14#include <linux/stddef.h>
15#include <malloc.h>
Simon Glasscf92e052015-09-02 17:24:58 -060016#include <memalign.h>
Maximilian Schwerin57210c72012-03-12 23:57:50 +000017#include <search.h>
18#include <errno.h>
19#include <fat.h>
20#include <mmc.h>
21
22char *env_name_spec = "FAT";
23
24env_t *env_ptr;
25
26DECLARE_GLOBAL_DATA_PTR;
27
Maximilian Schwerin57210c72012-03-12 23:57:50 +000028int env_init(void)
29{
30 /* use default */
31 gd->env_addr = (ulong)&default_environment[0];
32 gd->env_valid = 1;
33
34 return 0;
35}
36
37#ifdef CONFIG_CMD_SAVEENV
38int saveenv(void)
39{
Tom Rinicd0f4fa2013-04-05 14:55:21 -040040 env_t env_new;
Simon Glass4101f682016-02-29 15:25:34 -070041 struct blk_desc *dev_desc = NULL;
Wu, Joshbe354c12014-06-24 17:31:02 +080042 disk_partition_t info;
43 int dev, part;
Igor Grinberg9aa90c12012-09-23 05:25:21 +000044 int err;
Suriyan Ramasami1ad0b982014-11-17 14:39:35 -080045 loff_t size;
Maximilian Schwerin57210c72012-03-12 23:57:50 +000046
Marek Vasut7ce15262014-03-05 19:59:50 +010047 err = env_export(&env_new);
48 if (err)
49 return err;
Maximilian Schwerin57210c72012-03-12 23:57:50 +000050
Simon Glasse35929e2016-02-29 15:25:44 -070051 part = blk_get_device_part_str(FAT_ENV_INTERFACE,
Wu, Joshbe354c12014-06-24 17:31:02 +080052 FAT_ENV_DEVICE_AND_PART,
53 &dev_desc, &info, 1);
54 if (part < 0)
Maximilian Schwerin57210c72012-03-12 23:57:50 +000055 return 1;
Igor Grinberg9aa90c12012-09-23 05:25:21 +000056
Simon Glassbcce53d2016-02-29 15:25:51 -070057 dev = dev_desc->devnum;
Wu, Joshbe354c12014-06-24 17:31:02 +080058 if (fat_set_blk_dev(dev_desc, &info) != 0) {
59 printf("\n** Unable to use %s %d:%d for saveenv **\n",
60 FAT_ENV_INTERFACE, dev, part);
Maximilian Schwerin57210c72012-03-12 23:57:50 +000061 return 1;
62 }
63
Suriyan Ramasami1ad0b982014-11-17 14:39:35 -080064 err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, 0, sizeof(env_t),
65 &size);
Igor Grinberg9aa90c12012-09-23 05:25:21 +000066 if (err == -1) {
Maximilian Schwerin57210c72012-03-12 23:57:50 +000067 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
68 FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
69 return 1;
70 }
71
72 puts("done\n");
73 return 0;
74}
75#endif /* CONFIG_CMD_SAVEENV */
76
77void env_relocate_spec(void)
78{
Tom Rini6d1966e2014-08-01 13:59:10 -040079 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
Simon Glass4101f682016-02-29 15:25:34 -070080 struct blk_desc *dev_desc = NULL;
Wu, Joshbe354c12014-06-24 17:31:02 +080081 disk_partition_t info;
82 int dev, part;
Igor Grinberg9aa90c12012-09-23 05:25:21 +000083 int err;
Maximilian Schwerin57210c72012-03-12 23:57:50 +000084
Simon Glasse35929e2016-02-29 15:25:44 -070085 part = blk_get_device_part_str(FAT_ENV_INTERFACE,
Wu, Joshbe354c12014-06-24 17:31:02 +080086 FAT_ENV_DEVICE_AND_PART,
87 &dev_desc, &info, 1);
88 if (part < 0)
89 goto err_env_relocate;
Maximilian Schwerin57210c72012-03-12 23:57:50 +000090
Simon Glassbcce53d2016-02-29 15:25:51 -070091 dev = dev_desc->devnum;
Wu, Joshbe354c12014-06-24 17:31:02 +080092 if (fat_set_blk_dev(dev_desc, &info) != 0) {
93 printf("\n** Unable to use %s %d:%d for loading the env **\n",
94 FAT_ENV_INTERFACE, dev, part);
95 goto err_env_relocate;
Maximilian Schwerin57210c72012-03-12 23:57:50 +000096 }
97
Tom Rini6d1966e2014-08-01 13:59:10 -040098 err = file_fat_read(FAT_ENV_FILE, buf, CONFIG_ENV_SIZE);
Igor Grinberg9aa90c12012-09-23 05:25:21 +000099 if (err == -1) {
Maximilian Schwerin57210c72012-03-12 23:57:50 +0000100 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
101 FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
Wu, Joshbe354c12014-06-24 17:31:02 +0800102 goto err_env_relocate;
Maximilian Schwerin57210c72012-03-12 23:57:50 +0000103 }
104
105 env_import(buf, 1);
Wu, Joshbe354c12014-06-24 17:31:02 +0800106 return;
107
108err_env_relocate:
109 set_default_env(NULL);
Maximilian Schwerin57210c72012-03-12 23:57:50 +0000110}