fs/yaffs2/yaffs_uboot_glue.c

   1 /*
   2  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
   3  *
   4  * Copyright (C) 2002-2007 Aleph One Ltd.
   5  *   for Toby Churchill Ltd and Brightstar Engineering
   6  *
   7  * Created by Charles Manning <charles@aleph1.co.uk>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 /*
  15  * yaffscfg.c  The configuration for the "direct" use of yaffs.
  16  *
  17  * This is set up for u-boot.
  18  *
  19  * This version now uses the ydevconfig mechanism to set up partitions.
  20  */
  21
  22 #include <common.h>
  23 #include <div64.h>
  24
  25 #include <config.h>
  26 #include "nand.h"
  27 #include "yaffscfg.h"
  28 #include "yaffsfs.h"
  29 #include "yaffs_packedtags2.h"
  30 #include "yaffs_mtdif.h"
  31 #include "yaffs_mtdif2.h"
  32 #if 0
  33 #include <errno.h>
  34 #else
  35 #include "malloc.h"
  36 #endif
  37
  38 unsigned yaffs_trace_mask = 0x0; /* Disable logging */
  39 static int yaffs_errno;
  40
  41
  42 void yaffs_bug_fn(const char *fn, int n)
  43 {
  44         printf("yaffs bug at %s:%d\n", fn, n);
  45 }
  46
  47 void *yaffsfs_malloc(size_t x)
  48 {
  49         return malloc(x);
  50 }
  51
  52 void yaffsfs_free(void *x)
  53 {
  54         free(x);
  55 }
  56
  57 void yaffsfs_SetError(int err)
  58 {
  59         yaffs_errno = err;
  60 }
  61
  62 int yaffsfs_GetLastError(void)
  63 {
  64         return yaffs_errno;
  65 }
  66
  67
  68 int yaffsfs_GetError(void)
  69 {
  70         return yaffs_errno;
  71 }
  72
  73 void yaffsfs_Lock(void)
  74 {
  75 }
  76
  77 void yaffsfs_Unlock(void)
  78 {
  79 }
  80
  81 __u32 yaffsfs_CurrentTime(void)
  82 {
  83         return 0;
  84 }
  85
  86 void *yaffs_malloc(size_t size)
  87 {
  88         return malloc(size);
  89 }
  90
  91 void yaffs_free(void *ptr)
  92 {
  93         free(ptr);
  94 }
  95
  96 void yaffsfs_LocalInitialisation(void)
  97 {
  98         /* No locking used */
  99 }
 100
 101
 102 static const char *yaffs_file_type_str(struct yaffs_stat *stat)
 103 {
 104         switch (stat->st_mode & S_IFMT) {
 105         case S_IFREG: return "regular file";
 106         case S_IFDIR: return "directory";
 107         case S_IFLNK: return "symlink";
 108         default: return "unknown";
 109         }
 110 }
 111
 112 static const char *yaffs_error_str(void)
 113 {
 114         int error = yaffsfs_GetLastError();
 115
 116         if (error < 0)
 117                 error = -error;
 118
 119         switch (error) {
 120         case EBUSY: return "Busy";
 121         case ENODEV: return "No such device";
 122         case EINVAL: return "Invalid parameter";
 123         case ENFILE: return "Too many open files";
 124         case EBADF:  return "Bad handle";
 125         case EACCES: return "Wrong permissions";
 126         case EXDEV:  return "Not on same device";
 127         case ENOENT: return "No such entry";
 128         case ENOSPC: return "Device full";
 129         case EROFS:  return "Read only file system";
 130         case ERANGE: return "Range error";
 131         case ENOTEMPTY: return "Not empty";
 132         case ENAMETOOLONG: return "Name too long";
 133         case ENOMEM: return "Out of memory";
 134         case EFAULT: return "Fault";
 135         case EEXIST: return "Name exists";
 136         case ENOTDIR: return "Not a directory";
 137         case EISDIR: return "Not permitted on a directory";
 138         case ELOOP:  return "Symlink loop";
 139         case 0: return "No error";
 140         default: return "Unknown error";
 141         }
 142 }
 143
 144 void cmd_yaffs_tracemask(unsigned set, unsigned mask)
 145 {
 146         if (set)
 147                 yaffs_trace_mask = mask;
 148
 149         printf("yaffs trace mask: %08x\n", yaffs_trace_mask);
 150 }
 151
 152 static int yaffs_regions_overlap(int a, int b, int x, int y)
 153 {
 154         return  (a <= x && x <= b) ||
 155                 (a <= y && y <= b) ||
 156                 (x <= a && a <= y) ||
 157                 (x <= b && b <= y);
 158 }
 159
 160 void cmd_yaffs_devconfig(char *_mp, int flash_dev,
 161                         int start_block, int end_block)
 162 {
 163         struct mtd_info *mtd = NULL;
 164         struct yaffs_dev *dev = NULL;
 165         struct yaffs_dev *chk;
 166         char *mp = NULL;
 167         struct nand_chip *chip;
 168
 169         dev = calloc(1, sizeof(*dev));
 170         mp = strdup(_mp);
 171
 172         mtd = nand_info[flash_dev];
 173
 174         if (!dev || !mp) {
 175                 /* Alloc error */
 176                 printf("Failed to allocate memory\n");
 177                 goto err;
 178         }
 179
 180         if (flash_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
 181                 printf("Flash device invalid\n");
 182                 goto err;
 183         }
 184
 185         if (end_block == 0)
 186                 end_block = lldiv(mtd->size, mtd->erasesize - 1);
 187
 188         if (end_block < start_block) {
 189                 printf("Bad start/end\n");
 190                 goto err;
 191         }
 192
 193         chip =  mtd_to_nand(mtd);
 194
 195         /* Check for any conflicts */
 196         yaffs_dev_rewind();
 197         while (1) {
 198                 chk = yaffs_next_dev();
 199                 if (!chk)
 200                         break;
 201                 if (strcmp(chk->param.name, mp) == 0) {
 202                         printf("Mount point name already used\n");
 203                         goto err;
 204                 }
 205                 if (chk->driver_context == mtd &&
 206                         yaffs_regions_overlap(
 207                                 chk->param.start_block, chk->param.end_block,
 208                                 start_block, end_block)) {
 209                         printf("Region overlaps with partition %s\n",
 210                                 chk->param.name);
 211                         goto err;
 212                 }
 213
 214         }
 215
 216         /* Seems sane, so configure */
 217         memset(dev, 0, sizeof(*dev));
 218         dev->param.name = mp;
 219         dev->driver_context = mtd;
 220         dev->param.start_block = start_block;
 221         dev->param.end_block = end_block;
 222         dev->param.chunks_per_block = mtd->erasesize / mtd->writesize;
 223         dev->param.total_bytes_per_chunk = mtd->writesize;
 224         dev->param.is_yaffs2 = 1;
 225         dev->param.use_nand_ecc = 1;
 226         dev->param.n_reserved_blocks = 5;
 227         if (chip->ecc.layout->oobavail < sizeof(struct yaffs_packed_tags2))
 228                 dev->param.inband_tags = 1;
 229         dev->param.n_caches = 10;
 230         dev->param.write_chunk_tags_fn = nandmtd2_write_chunk_tags;
 231         dev->param.read_chunk_tags_fn = nandmtd2_read_chunk_tags;
 232         dev->param.erase_fn = nandmtd_EraseBlockInNAND;
 233         dev->param.initialise_flash_fn = nandmtd_InitialiseNAND;
 234         dev->param.bad_block_fn = nandmtd2_MarkNANDBlockBad;
 235         dev->param.query_block_fn = nandmtd2_QueryNANDBlock;
 236
 237         yaffs_add_device(dev);
 238
 239         printf("Configures yaffs mount %s: dev %d start block %d, end block %d %s\n",
 240                 mp, flash_dev, start_block, end_block,
 241                 dev->param.inband_tags ? "using inband tags" : "");
 242         return;
 243
 244 err:
 245         free(dev);
 246         free(mp);
 247 }
 248
 249 void cmd_yaffs_dev_ls(void)
 250 {
 251         struct yaffs_dev *dev;
 252         int flash_dev;
 253         int free_space;
 254
 255         yaffs_dev_rewind();
 256
 257         while (1) {
 258                 dev = yaffs_next_dev();
 259                 if (!dev)
 260                         return;
 261                 flash_dev = nand_mtd_to_devnum(dev->driver_context);
 262                 printf("%-10s %5d 0x%05x 0x%05x %s",
 263                         dev->param.name, flash_dev,
 264                         dev->param.start_block, dev->param.end_block,
 265                         dev->param.inband_tags ? "using inband tags, " : "");
 266
 267                 free_space = yaffs_freespace(dev->param.name);
 268                 if (free_space < 0)
 269                         printf("not mounted\n");
 270                 else
 271                         printf("free 0x%x\n", free_space);
 272
 273         }
 274 }
 275
 276 void make_a_file(char *yaffsName, char bval, int sizeOfFile)
 277 {
 278         int outh;
 279         int i;
 280         unsigned char buffer[100];
 281
 282         outh = yaffs_open(yaffsName,
 283                                 O_CREAT | O_RDWR | O_TRUNC,
 284                                 S_IREAD | S_IWRITE);
 285         if (outh < 0) {
 286                 printf("Error opening file: %d. %s\n", outh, yaffs_error_str());
 287                 return;
 288         }
 289
 290         memset(buffer, bval, 100);
 291
 292         do {
 293                 i = sizeOfFile;
 294                 if (i > 100)
 295                         i = 100;
 296                 sizeOfFile -= i;
 297
 298                 yaffs_write(outh, buffer, i);
 299
 300         } while (sizeOfFile > 0);
 301
 302
 303         yaffs_close(outh);
 304 }
 305
 306 void read_a_file(char *fn)
 307 {
 308         int h;
 309         int i = 0;
 310         unsigned char b;
 311
 312         h = yaffs_open(fn, O_RDWR, 0);
 313         if (h < 0) {
 314                 printf("File not found\n");
 315                 return;
 316         }
 317
 318         while (yaffs_read(h, &b, 1) > 0) {
 319                 printf("%02x ", b);
 320                 i++;
 321                 if (i > 32) {
 322                         printf("\n");
 323                         i = 0;
 324                 }
 325         }
 326         printf("\n");
 327         yaffs_close(h);
 328 }
 329
 330 void cmd_yaffs_mount(char *mp)
 331 {
 332         int retval = yaffs_mount(mp);
 333         if (retval < 0)
 334                 printf("Error mounting %s, return value: %d, %s\n", mp,
 335                         yaffsfs_GetError(), yaffs_error_str());
 336 }
 337
 338
 339 void cmd_yaffs_umount(char *mp)
 340 {
 341         if (yaffs_unmount(mp) == -1)
 342                 printf("Error umounting %s, return value: %d, %s\n", mp,
 343                         yaffsfs_GetError(), yaffs_error_str());
 344 }
 345
 346 void cmd_yaffs_write_file(char *yaffsName, char bval, int sizeOfFile)
 347 {
 348         make_a_file(yaffsName, bval, sizeOfFile);
 349 }
 350
 351
 352 void cmd_yaffs_read_file(char *fn)
 353 {
 354         read_a_file(fn);
 355 }
 356
 357
 358 void cmd_yaffs_mread_file(char *fn, char *addr)
 359 {
 360         int h;
 361         struct yaffs_stat s;
 362
 363         yaffs_stat(fn, &s);
 364
 365         printf("Copy %s to 0x%p... ", fn, addr);
 366         h = yaffs_open(fn, O_RDWR, 0);
 367         if (h < 0) {
 368                 printf("File not found\n");
 369                 return;
 370         }
 371
 372         yaffs_read(h, addr, (int)s.st_size);
 373         printf("\t[DONE]\n");
 374
 375         yaffs_close(h);
 376 }
 377
 378
 379 void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
 380 {
 381         int outh;
 382
 383         outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
 384         if (outh < 0)
 385                 printf("Error opening file: %d, %s\n", outh, yaffs_error_str());
 386
 387         yaffs_write(outh, addr, size);
 388
 389         yaffs_close(outh);
 390 }
 391
 392
 393 void cmd_yaffs_ls(const char *mountpt, int longlist)
 394 {
 395         int i;
 396         yaffs_DIR *d;
 397         struct yaffs_dirent *de;
 398         struct yaffs_stat stat;
 399         char tempstr[255];
 400
 401         d = yaffs_opendir(mountpt);
 402
 403         if (!d) {
 404                 printf("opendir failed, %s\n", yaffs_error_str());
 405                 return;
 406         }
 407
 408         for (i = 0; (de = yaffs_readdir(d)) != NULL; i++) {
 409                 if (longlist) {
 410                         sprintf(tempstr, "%s/%s", mountpt, de->d_name);
 411                         yaffs_lstat(tempstr, &stat);
 412                         printf("%-25s\t%7ld",
 413                                         de->d_name,
 414                                         (long)stat.st_size);
 415                         printf(" %5d %s\n",
 416                                         stat.st_ino,
 417                                         yaffs_file_type_str(&stat));
 418                 } else {
 419                         printf("%s\n", de->d_name);
 420                 }
 421         }
 422
 423         yaffs_closedir(d);
 424 }
 425
 426
 427 void cmd_yaffs_mkdir(const char *dir)
 428 {
 429         int retval = yaffs_mkdir(dir, 0);
 430
 431         if (retval < 0)
 432                 printf("yaffs_mkdir returning error: %d, %s\n",
 433                         retval, yaffs_error_str());
 434 }
 435
 436 void cmd_yaffs_rmdir(const char *dir)
 437 {
 438         int retval = yaffs_rmdir(dir);
 439
 440         if (retval < 0)
 441                 printf("yaffs_rmdir returning error: %d, %s\n",
 442                         retval, yaffs_error_str());
 443 }
 444
 445 void cmd_yaffs_rm(const char *path)
 446 {
 447         int retval = yaffs_unlink(path);
 448
 449         if (retval < 0)
 450                 printf("yaffs_unlink returning error: %d, %s\n",
 451                         retval, yaffs_error_str());
 452 }
 453
 454 void cmd_yaffs_mv(const char *oldPath, const char *newPath)
 455 {
 456         int retval = yaffs_rename(newPath, oldPath);
 457
 458         if (retval < 0)
 459                 printf("yaffs_unlink returning error: %d, %s\n",
 460                         retval, yaffs_error_str());
 461 }