Loading...
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 | // SPDX-License-Identifier: GPL-2.0+ /* * (c) Copyright 2012 by National Instruments, * Joe Hershberger <joe.hershberger@ni.com> */ #include <asm/global_data.h> #include <command.h> #include <env.h> #include <env_internal.h> #include <errno.h> #include <malloc.h> #include <memalign.h> #include <search.h> #include <ubi_uboot.h> #undef crc32 #define _QUOTE(x) #x #define QUOTE(x) _QUOTE(x) #if (CONFIG_ENV_UBI_VID_OFFSET == 0) #define UBI_VID_OFFSET NULL #else #define UBI_VID_OFFSET QUOTE(CONFIG_ENV_UBI_VID_OFFSET) #endif DECLARE_GLOBAL_DATA_PTR; #if CONFIG_ENV_REDUNDANT #define ENV_UBI_VOLUME_REDUND CONFIG_ENV_UBI_VOLUME_REDUND #else #define ENV_UBI_VOLUME_REDUND "invalid" #endif #ifdef CONFIG_CMD_SAVEENV #ifdef CONFIG_ENV_REDUNDANT static int env_ubi_save(void) { ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1); int ret; ret = env_export(env_new); if (ret) return ret; if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) { printf("\n** Cannot find mtd partition \"%s\"\n", CONFIG_ENV_UBI_PART); return 1; } if (gd->env_valid == ENV_VALID) { puts("Writing to redundant UBI... "); if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND, (void *)env_new, 0, CONFIG_ENV_SIZE)) { printf("\n** Unable to write env to %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND); return 1; } } else { puts("Writing to UBI... "); if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new, 0, CONFIG_ENV_SIZE)) { printf("\n** Unable to write env to %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); return 1; } } puts("done\n"); gd->env_valid = gd->env_valid == ENV_VALID ? ENV_REDUND : ENV_VALID; return 0; } #else /* ! CONFIG_ENV_REDUNDANT */ static int env_ubi_save(void) { ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1); int ret; ret = env_export(env_new); if (ret) return ret; if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) { printf("\n** Cannot find mtd partition \"%s\"\n", CONFIG_ENV_UBI_PART); return 1; } if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new, 0, CONFIG_ENV_SIZE)) { printf("\n** Unable to write env to %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); return 1; } puts("done\n"); return 0; } #endif /* CONFIG_ENV_REDUNDANT */ #endif /* CONFIG_CMD_SAVEENV */ #ifdef CONFIG_ENV_REDUNDANT static int env_ubi_load(void) { ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE); ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE); int read1_fail, read2_fail; env_t *tmp_env1, *tmp_env2; /* * In case we have restarted u-boot there is a chance that buffer * contains old environment (from the previous boot). * If UBI volume is zero size, ubi_volume_read() doesn't modify the * buffer. * We need to clear buffer manually here, so the invalid CRC will * cause setting default environment as expected. */ memset(env1_buf, 0x0, CONFIG_ENV_SIZE); memset(env2_buf, 0x0, CONFIG_ENV_SIZE); tmp_env1 = (env_t *)env1_buf; tmp_env2 = (env_t *)env2_buf; if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) { printf("\n** Cannot find mtd partition \"%s\"\n", CONFIG_ENV_UBI_PART); env_set_default(NULL, 0); return -EIO; } read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1, 0, CONFIG_ENV_SIZE); if (read1_fail) printf("\n** Unable to read env from %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND, (void *)tmp_env2, 0, CONFIG_ENV_SIZE); if (read2_fail) printf("\n** Unable to read redundant env from %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND); return env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2, read2_fail, H_EXTERNAL); } #else /* ! CONFIG_ENV_REDUNDANT */ static int env_ubi_load(void) { ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); /* * In case we have restarted u-boot there is a chance that buffer * contains old environment (from the previous boot). * If UBI volume is zero size, ubi_volume_read() doesn't modify the * buffer. * We need to clear buffer manually here, so the invalid CRC will * cause setting default environment as expected. */ memset(buf, 0x0, CONFIG_ENV_SIZE); if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) { printf("\n** Cannot find mtd partition \"%s\"\n", CONFIG_ENV_UBI_PART); env_set_default(NULL, 0); return -EIO; } if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, 0, CONFIG_ENV_SIZE)) { printf("\n** Unable to read env from %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); env_set_default(NULL, 0); return -EIO; } return env_import(buf, 1, H_EXTERNAL); } #endif /* CONFIG_ENV_REDUNDANT */ static int env_ubi_erase(void) { ALLOC_CACHE_ALIGN_BUFFER(char, env_buf, CONFIG_ENV_SIZE); int ret = 0; if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) { printf("\n** Cannot find mtd partition \"%s\"\n", CONFIG_ENV_UBI_PART); return 1; } memset(env_buf, 0x0, CONFIG_ENV_SIZE); if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_buf, 0, CONFIG_ENV_SIZE)) { printf("\n** Unable to erase env to %s:%s **\n", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); ret = 1; } if (IS_ENABLED(CONFIG_ENV_REDUNDANT)) { if (ubi_volume_write(ENV_UBI_VOLUME_REDUND, (void *)env_buf, 0, CONFIG_ENV_SIZE)) { printf("\n** Unable to erase env to %s:%s **\n", CONFIG_ENV_UBI_PART, ENV_UBI_VOLUME_REDUND); ret = 1; } } return ret; } U_BOOT_ENV_LOCATION(ubi) = { .location = ENVL_UBI, ENV_NAME("UBI") .load = env_ubi_load, .save = env_save_ptr(env_ubi_save), .erase = ENV_ERASE_PTR(env_ubi_erase), }; |