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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | // SPDX-License-Identifier: GPL-2.0+ /* * (c) Copyright 2016 by VRT Technology * * Author: * Stuart Longland <stuartl@vrt.com.au> * * Based on FAT environment driver * (c) Copyright 2011 by Tigris Elektronik GmbH * * Author: * Maximilian Schwerin <mvs@tigris.de> * * and EXT4 filesystem implementation * (C) Copyright 2011 - 2012 Samsung Electronics * EXT4 filesystem implementation in Uboot by * Uma Shankar <uma.shankar@samsung.com> * Manjunatha C Achar <a.manjunatha@samsung.com> */ #include <common.h> #include <command.h> #include <env.h> #include <env_internal.h> #include <linux/stddef.h> #include <malloc.h> #include <memalign.h> #include <search.h> #include <errno.h> #include <ext4fs.h> #include <mmc.h> __weak const char *env_ext4_get_intf(void) { return (const char *)CONFIG_ENV_EXT4_INTERFACE; } __weak const char *env_ext4_get_dev_part(void) { return (const char *)CONFIG_ENV_EXT4_DEVICE_AND_PART; } #ifdef CONFIG_CMD_SAVEENV static int env_ext4_save(void) { env_t env_new; struct blk_desc *dev_desc = NULL; disk_partition_t info; int dev, part; int err; const char *ifname = env_ext4_get_intf(); const char *dev_and_part = env_ext4_get_dev_part(); err = env_export(&env_new); if (err) return err; part = blk_get_device_part_str(ifname, dev_and_part, &dev_desc, &info, 1); if (part < 0) return 1; dev = dev_desc->devnum; ext4fs_set_blk_dev(dev_desc, &info); if (!ext4fs_mount(info.size)) { printf("\n** Unable to use %s %s for saveenv **\n", ifname, dev_and_part); return 1; } err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new, sizeof(env_t), FILETYPE_REG); ext4fs_close(); if (err == -1) { printf("\n** Unable to write \"%s\" from %s%d:%d **\n", CONFIG_ENV_EXT4_FILE, ifname, dev, part); return 1; } puts("done\n"); return 0; } #endif /* CONFIG_CMD_SAVEENV */ static int env_ext4_load(void) { ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); struct blk_desc *dev_desc = NULL; disk_partition_t info; int dev, part; int err; loff_t off; const char *ifname = env_ext4_get_intf(); const char *dev_and_part = env_ext4_get_dev_part(); #ifdef CONFIG_MMC if (!strcmp(ifname, "mmc")) mmc_initialize(NULL); #endif part = blk_get_device_part_str(ifname, dev_and_part, &dev_desc, &info, 1); if (part < 0) goto err_env_relocate; dev = dev_desc->devnum; ext4fs_set_blk_dev(dev_desc, &info); if (!ext4fs_mount(info.size)) { printf("\n** Unable to use %s %s for loading the env **\n", ifname, dev_and_part); goto err_env_relocate; } err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE, &off); ext4fs_close(); if (err == -1) { printf("\n** Unable to read \"%s\" from %s%d:%d **\n", CONFIG_ENV_EXT4_FILE, ifname, dev, part); goto err_env_relocate; } return env_import(buf, 1); err_env_relocate: env_set_default(NULL, 0); return -EIO; } U_BOOT_ENV_LOCATION(ext4) = { .location = ENVL_EXT4, ENV_NAME("EXT4") .load = env_ext4_load, .save = env_save_ptr(env_ext4_save), }; |