/*************************************************************************** * Copyright (C) 2007 by Dominic Rath * * Copyright (C) 2002 Thomas Gleixner * * Copyright (C) 2009 Zachary T Welch * * * * Partially based on drivers/mtd/nand_ids.c from Linux. * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "core.h" #include "fileio.h" static struct nand_ecclayout nand_oob_16 = { .eccbytes = 6, .eccpos = {0, 1, 2, 3, 6, 7}, .oobfree = { {.offset = 8, . length = 8}} }; static struct nand_ecclayout nand_oob_64 = { .eccbytes = 24, .eccpos = { 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63}, .oobfree = { {.offset = 2, .length = 38}} }; void nand_fileio_init(struct nand_fileio_state *state) { memset(state, 0, sizeof(*state)); state->oob_format = NAND_OOB_NONE; } int nand_fileio_start(struct command_context *cmd_ctx, struct nand_device *nand, const char *filename, int filemode, struct nand_fileio_state *state) { if (state->address % nand->page_size) { command_print(cmd_ctx, "only page-aligned addresses are supported"); return ERROR_COMMAND_SYNTAX_ERROR; } duration_start(&state->bench); if (NULL != filename) { int retval = fileio_open(&state->fileio, filename, filemode, FILEIO_BINARY); if (ERROR_OK != retval) { const char *msg = (FILEIO_READ == filemode) ? "read" : "write"; command_print(cmd_ctx, "failed to open '%s' for %s access", filename, msg); return retval; } state->file_opened = true; } if (!(state->oob_format & NAND_OOB_ONLY)) { state->page_size = nand->page_size; state->page = malloc(nand->page_size); } if (state->oob_format & (NAND_OOB_RAW | NAND_OOB_SW_ECC | NAND_OOB_SW_ECC_KW)) { if (nand->page_size == 512) { state->oob_size = 16; state->eccpos = nand_oob_16.eccpos; } else if (nand->page_size == 2048) { state->oob_size = 64; state->eccpos = nand_oob_64.eccpos; } state->oob = malloc(state->oob_size); } return ERROR_OK; } int nand_fileio_cleanup(struct nand_fileio_state *state) { if (state->file_opened) fileio_close(&state->fileio); if (state->oob) { free(state->oob); state->oob = NULL; } if (state->page) { free(state->page); state->page = NULL; } return ERROR_OK; } int nand_fileio_finish(struct nand_fileio_state *state) { nand_fileio_cleanup(state); return duration_measure(&state->bench); } COMMAND_HELPER(nand_fileio_parse_args, struct nand_fileio_state *state, struct nand_device **dev, enum fileio_access filemode, bool need_size, bool sw_ecc) { nand_fileio_init(state); unsigned minargs = need_size ? 4 : 3; if (CMD_ARGC < minargs) return ERROR_COMMAND_SYNTAX_ERROR; struct nand_device *nand; int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &nand); if (ERROR_OK != retval) return retval; if (NULL == nand->device) { command_print(CMD_CTX, "#%s: not probed", CMD_ARGV[0]); return ERROR_OK; } COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], state->address); if (need_size) { COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], state->size); if (state->size % nand->page_size) { command_print(CMD_CTX, "only page-aligned sizes are supported"); return ERROR_COMMAND_SYNTAX_ERROR; } } if (CMD_ARGC > minargs) { for (unsigned i = minargs; i < CMD_ARGC; i++) { if (!strcmp(CMD_ARGV[i], "oob_raw")) state->oob_format |= NAND_OOB_RAW; else if (!strcmp(CMD_ARGV[i], "oob_only")) state->oob_format |= NAND_OOB_RAW | NAND_OOB_ONLY; else if (sw_ecc && !strcmp(CMD_ARGV[i], "oob_softecc")) state->oob_format |= NAND_OOB_SW_ECC; else if (sw_ecc && !strcmp(CMD_ARGV[i], "oob_softecc_kw")) state->oob_format |= NAND_OOB_SW_ECC_KW; else { command_print(CMD_CTX, "unknown option: %s", CMD_ARGV[i]); return ERROR_COMMAND_SYNTAX_ERROR; } } } retval = nand_fileio_start(CMD_CTX, nand, CMD_ARGV[1], filemode, state); if (ERROR_OK != retval) return retval; if (!need_size) state->size = state->fileio.size; *dev = nand; return ERROR_OK; } /** * @returns If no error occurred, returns number of bytes consumed; * otherwise, returns a negative error code.) */ int nand_fileio_read(struct nand_device *nand, struct nand_fileio_state *s) { size_t total_read = 0; size_t one_read; if (NULL != s->page) { fileio_read(&s->fileio, s->page_size, s->page, &one_read); if (one_read < s->page_size) memset(s->page + one_read, 0xff, s->page_size - one_read); total_read += one_read; } if (s->oob_format & NAND_OOB_SW_ECC) { uint8_t ecc[3]; memset(s->oob, 0xff, s->oob_size); for (uint32_t i = 0, j = 0; i < s->page_size; i += 256) { nand_calculate_ecc(nand, s->page + i, ecc); s->oob[s->eccpos[j++]] = ecc[0]; s->oob[s->eccpos[j++]] = ecc[1]; s->oob[s->eccpos[j++]] = ecc[2]; } } else if (s->oob_format & NAND_OOB_SW_ECC_KW) { /* * In this case eccpos is not used as * the ECC data is always stored contigously * at the end of the OOB area. It consists * of 10 bytes per 512-byte data block. */ uint8_t *ecc = s->oob + s->oob_size - s->page_size / 512 * 10; memset(s->oob, 0xff, s->oob_size); for (uint32_t i = 0; i < s->page_size; i += 512) { nand_calculate_ecc_kw(nand, s->page + i, ecc); ecc += 10; } } else if (NULL != s->oob) { fileio_read(&s->fileio, s->oob_size, s->oob, &one_read); if (one_read < s->oob_size) memset(s->oob + one_read, 0xff, s->oob_size - one_read); total_read += one_read; } return total_read; } >112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377