| Stuart Longland | fd1000b | 2016-02-23 15:51:26 +1000 | [diff] [blame] | 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> |
| 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 | } |