Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (c) Copyright 2011 by Tigris Elektronik GmbH |
| 3 | * |
| 4 | * Author: |
| 5 | * Maximilian Schwerin <mvs@tigris.de> |
| 6 | * |
Wolfgang Denk | 3765b3e | 2013-10-07 13:07:26 +0200 | [diff] [blame] | 7 | * SPDX-License-Identifier: GPL-2.0+ |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <common.h> |
| 11 | |
| 12 | #include <command.h> |
| 13 | #include <environment.h> |
| 14 | #include <linux/stddef.h> |
| 15 | #include <malloc.h> |
Simon Glass | cf92e05 | 2015-09-02 17:24:58 -0600 | [diff] [blame] | 16 | #include <memalign.h> |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 17 | #include <search.h> |
| 18 | #include <errno.h> |
| 19 | #include <fat.h> |
| 20 | #include <mmc.h> |
| 21 | |
Simon Glass | 4415f1d | 2017-08-03 12:21:58 -0600 | [diff] [blame^] | 22 | #ifdef CONFIG_SPL_BUILD |
| 23 | /* TODO(sjg@chromium.org): Figure out why this is needed */ |
| 24 | # if !defined(CONFIG_TARGET_AM335X_EVM) || defined(CONFIG_SPL_OS_BOOT) |
| 25 | # define LOADENV |
| 26 | # endif |
| 27 | #else |
| 28 | # define LOADENV |
| 29 | # if defined(CONFIG_CMD_SAVEENV) |
| 30 | # define CMD_SAVEENV |
| 31 | # endif |
| 32 | #endif |
| 33 | |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 34 | char *env_name_spec = "FAT"; |
| 35 | |
| 36 | env_t *env_ptr; |
| 37 | |
| 38 | DECLARE_GLOBAL_DATA_PTR; |
| 39 | |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 40 | int env_init(void) |
| 41 | { |
| 42 | /* use default */ |
| 43 | gd->env_addr = (ulong)&default_environment[0]; |
Simon Glass | 203e94f | 2017-08-03 12:21:56 -0600 | [diff] [blame] | 44 | gd->env_valid = ENV_VALID; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 45 | |
| 46 | return 0; |
| 47 | } |
| 48 | |
Simon Glass | 4415f1d | 2017-08-03 12:21:58 -0600 | [diff] [blame^] | 49 | #ifdef CMD_SAVEENV |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 50 | int saveenv(void) |
| 51 | { |
Tom Rini | cd0f4fa | 2013-04-05 14:55:21 -0400 | [diff] [blame] | 52 | env_t env_new; |
Simon Glass | 4101f68 | 2016-02-29 15:25:34 -0700 | [diff] [blame] | 53 | struct blk_desc *dev_desc = NULL; |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 54 | disk_partition_t info; |
| 55 | int dev, part; |
Igor Grinberg | 9aa90c1 | 2012-09-23 05:25:21 +0000 | [diff] [blame] | 56 | int err; |
Suriyan Ramasami | 1ad0b98 | 2014-11-17 14:39:35 -0800 | [diff] [blame] | 57 | loff_t size; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 58 | |
Marek Vasut | 7ce1526 | 2014-03-05 19:59:50 +0100 | [diff] [blame] | 59 | err = env_export(&env_new); |
| 60 | if (err) |
| 61 | return err; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 62 | |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 63 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
| 64 | CONFIG_ENV_FAT_DEVICE_AND_PART, |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 65 | &dev_desc, &info, 1); |
| 66 | if (part < 0) |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 67 | return 1; |
Igor Grinberg | 9aa90c1 | 2012-09-23 05:25:21 +0000 | [diff] [blame] | 68 | |
Simon Glass | bcce53d | 2016-02-29 15:25:51 -0700 | [diff] [blame] | 69 | dev = dev_desc->devnum; |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 70 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
| 71 | printf("\n** Unable to use %s %d:%d for saveenv **\n", |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 72 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 73 | return 1; |
| 74 | } |
| 75 | |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 76 | err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t), |
Suriyan Ramasami | 1ad0b98 | 2014-11-17 14:39:35 -0800 | [diff] [blame] | 77 | &size); |
Igor Grinberg | 9aa90c1 | 2012-09-23 05:25:21 +0000 | [diff] [blame] | 78 | if (err == -1) { |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 79 | printf("\n** Unable to write \"%s\" from %s%d:%d **\n", |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 80 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 81 | return 1; |
| 82 | } |
| 83 | |
| 84 | puts("done\n"); |
| 85 | return 0; |
| 86 | } |
Simon Glass | 4415f1d | 2017-08-03 12:21:58 -0600 | [diff] [blame^] | 87 | #endif /* CMD_SAVEENV */ |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 88 | |
Simon Glass | 4415f1d | 2017-08-03 12:21:58 -0600 | [diff] [blame^] | 89 | #ifdef LOADENV |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 90 | void env_relocate_spec(void) |
| 91 | { |
Tom Rini | 6d1966e | 2014-08-01 13:59:10 -0400 | [diff] [blame] | 92 | ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); |
Simon Glass | 4101f68 | 2016-02-29 15:25:34 -0700 | [diff] [blame] | 93 | struct blk_desc *dev_desc = NULL; |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 94 | disk_partition_t info; |
| 95 | int dev, part; |
Igor Grinberg | 9aa90c1 | 2012-09-23 05:25:21 +0000 | [diff] [blame] | 96 | int err; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 97 | |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 98 | part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, |
| 99 | CONFIG_ENV_FAT_DEVICE_AND_PART, |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 100 | &dev_desc, &info, 1); |
| 101 | if (part < 0) |
| 102 | goto err_env_relocate; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 103 | |
Simon Glass | bcce53d | 2016-02-29 15:25:51 -0700 | [diff] [blame] | 104 | dev = dev_desc->devnum; |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 105 | if (fat_set_blk_dev(dev_desc, &info) != 0) { |
| 106 | printf("\n** Unable to use %s %d:%d for loading the env **\n", |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 107 | CONFIG_ENV_FAT_INTERFACE, dev, part); |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 108 | goto err_env_relocate; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 109 | } |
| 110 | |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 111 | err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE); |
Igor Grinberg | 9aa90c1 | 2012-09-23 05:25:21 +0000 | [diff] [blame] | 112 | if (err == -1) { |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 113 | printf("\n** Unable to read \"%s\" from %s%d:%d **\n", |
Tom Rini | 43ba3c5 | 2017-07-26 21:48:00 -0400 | [diff] [blame] | 114 | CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 115 | goto err_env_relocate; |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | env_import(buf, 1); |
Wu, Josh | be354c1 | 2014-06-24 17:31:02 +0800 | [diff] [blame] | 119 | return; |
| 120 | |
| 121 | err_env_relocate: |
| 122 | set_default_env(NULL); |
Maximilian Schwerin | 57210c7 | 2012-03-12 23:57:50 +0000 | [diff] [blame] | 123 | } |
Simon Glass | 4415f1d | 2017-08-03 12:21:58 -0600 | [diff] [blame^] | 124 | #endif /* LOADENV */ |
| 125 | |
| 126 | U_BOOT_ENV_LOCATION(fat) = { |
| 127 | .location = ENVL_FAT, |
| 128 | .get_char = env_get_char_spec, |
| 129 | #ifdef LOADENV |
| 130 | .load = env_relocate_spec, |
| 131 | #endif |
| 132 | #ifdef CMD_SAVEENV |
| 133 | .save = env_save_ptr(saveenv), |
| 134 | #endif |
| 135 | .init = env_init, |
| 136 | }; |