2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2007 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
7 * Created by Charles Manning <charles@aleph1.co.uk>
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.
15 * yaffscfg.c The configuration for the "direct" use of yaffs.
17 * This is set up for u-boot.
19 * This version now uses the ydevconfig mechanism to set up partitions.
28 #include "yaffs_packedtags2.h"
29 #include "yaffs_mtdif.h"
30 #include "yaffs_mtdif2.h"
37 unsigned yaffs_trace_mask = 0x0; /* Disable logging */
38 static int yaffs_errno = 0;
43 void yaffs_bug_fn(const char *fn, int n)
45 printf("yaffs bug at %s:%d\n", fn, n);
48 void *yaffsfs_malloc(size_t x)
53 void yaffsfs_free(void *x)
58 void yaffsfs_SetError(int err)
60 //Do whatever to set error
64 int yaffsfs_GetLastError(void)
70 int yaffsfs_GetError(void)
75 void yaffsfs_Lock(void)
79 void yaffsfs_Unlock(void)
83 __u32 yaffsfs_CurrentTime(void)
88 void *yaffs_malloc(size_t size)
93 void yaffs_free(void *ptr)
98 void yaffsfs_LocalInitialisation(void)
100 // Define locking semaphore.
104 static const char * yaffs_file_type_str(struct yaffs_stat *stat)
106 switch(stat->st_mode & S_IFMT) {
107 case S_IFREG: return "regular file";
108 case S_IFDIR: return "directory";
109 case S_IFLNK: return "symlink";
110 default: return "unknown";
114 static const char * yaffs_error_str(void)
116 int error = yaffsfs_GetLastError();
122 case EBUSY: return "Busy";
123 case ENODEV: return "No such device";
124 case EINVAL: return "Invalid parameter";
125 case ENFILE: return "Too many open files";
126 case EBADF: return "Bad handle";
127 case EACCES: return "Wrong permissions";
128 case EXDEV: return "Not on same device";
129 case ENOENT: return "No such entry";
130 case ENOSPC: return "Device full";
131 case EROFS: return "Read only file system";
132 case ERANGE: return "Range error";
133 case ENOTEMPTY: return "Not empty";
134 case ENAMETOOLONG: return "Name too long";
135 case ENOMEM: return "Out of memory";
136 case EFAULT: return "Fault";
137 case EEXIST: return "Name exists";
138 case ENOTDIR: return "Not a directory";
139 case EISDIR: return "Not permitted on a directory";
140 case ELOOP: return "Symlink loop";
141 case 0: return "No error";
142 default: return "Unknown error";
146 extern nand_info_t nand_info[];
148 void cmd_yaffs_tracemask(unsigned set, unsigned mask)
151 yaffs_trace_mask = mask;
153 printf("yaffs trace mask: %08x\n",yaffs_trace_mask);
156 static int yaffs_regions_overlap(int a, int b, int x, int y)
159 (a <= x && x <= b) ||
160 (a <= y && y <= b) ||
161 (x <= a && a <= y) ||
165 void cmd_yaffs_devconfig(char *_mp, int flash_dev, int start_block, int end_block)
167 struct mtd_info *mtd = NULL;
168 struct yaffs_dev *dev = NULL;
169 struct yaffs_dev *chk;
171 struct nand_chip *chip;
173 dev = calloc(1, sizeof(*dev));
176 mtd = &nand_info[flash_dev];
180 printf("Failed to allocate memory\n");
184 if(flash_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
185 printf("Flash device invalid\n");
189 end_block = mtd->size / mtd->erasesize - 1;
191 if(end_block < start_block) {
192 printf("Bad start/end\n");
198 /* Check for any conflicts */
201 chk = yaffs_next_dev();
204 if(strcmp(chk->param.name, mp) == 0) {
205 printf("Mount point name already used\n");
208 if(chk->driver_context == mtd &&
209 yaffs_regions_overlap(
210 chk->param.start_block, chk->param.end_block,
211 start_block, end_block)) {
212 printf("Region overlaps with partition %s\n",
219 /* Seems sane, so configure */
220 memset(dev, 0, sizeof(*dev));
221 dev->param.name = mp;
222 dev->driver_context = mtd;
223 dev->param.start_block = start_block;
224 dev->param.end_block = end_block;
225 dev->param.chunks_per_block = mtd->erasesize / mtd->writesize;
226 dev->param.total_bytes_per_chunk = mtd->writesize;
227 dev->param.is_yaffs2 = 1;
228 dev->param.use_nand_ecc = 1;
229 dev->param.n_reserved_blocks = 5;
230 if (chip->ecc.layout->oobavail < sizeof(struct yaffs_packed_tags2))
231 dev->param.inband_tags =1;
232 dev->param.n_caches = 10;
233 dev->param.write_chunk_tags_fn = nandmtd2_write_chunk_tags;
234 dev->param.read_chunk_tags_fn = nandmtd2_read_chunk_tags;
235 dev->param.erase_fn = nandmtd_EraseBlockInNAND;
236 dev->param.initialise_flash_fn = nandmtd_InitialiseNAND;
237 dev->param.bad_block_fn = nandmtd2_MarkNANDBlockBad;
238 dev->param.query_block_fn = nandmtd2_QueryNANDBlock;
240 yaffs_add_device(dev);
242 printf("Configures yaffs mount %s: dev %d start block %d, end block %d %s\n",
243 mp, flash_dev, start_block, end_block,
244 dev->param.inband_tags ? "using inband tags" : "");
252 void cmd_yaffs_dev_ls(void)
254 struct yaffs_dev *dev;
261 dev = yaffs_next_dev();
264 flash_dev = ((unsigned) dev->driver_context - (unsigned) nand_info)/
265 sizeof(nand_info[0]);
266 printf("%-10s %5d 0x%05x 0x%05x %s",
267 dev->param.name, flash_dev,
268 dev->param.start_block, dev->param.end_block,
269 dev->param.inband_tags ? "using inband tags, " : "");
271 free_space = yaffs_freespace(dev->param.name);
273 printf("not mounted\n");
275 printf("free 0x%x\n", free_space);
280 void make_a_file(char *yaffsName,char bval,int sizeOfFile)
284 unsigned char buffer[100];
286 outh = yaffs_open(yaffsName, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
289 printf("Error opening file: %d. %s\n", outh, yaffs_error_str());
293 memset(buffer,bval,100);
300 yaffs_write(outh,buffer,i);
302 } while (sizeOfFile > 0);
308 void read_a_file(char *fn)
314 h = yaffs_open(fn, O_RDWR,0);
317 printf("File not found\n");
321 while(yaffs_read(h,&b,1)> 0)
335 void cmd_yaffs_mount(char *mp)
337 int retval = yaffs_mount(mp);
339 printf("Error mounting %s, return value: %d, %s\n", mp,
340 yaffsfs_GetError(), yaffs_error_str());
344 void cmd_yaffs_umount(char *mp)
346 if( yaffs_unmount(mp) == -1)
347 printf("Error umounting %s, return value: %d, %s\n", mp,
348 yaffsfs_GetError(), yaffs_error_str());
351 void cmd_yaffs_write_file(char *yaffsName,char bval,int sizeOfFile)
353 make_a_file(yaffsName,bval,sizeOfFile);
357 void cmd_yaffs_read_file(char *fn)
363 void cmd_yaffs_mread_file(char *fn, char *addr)
370 printf ("Copy %s to 0x%p... ", fn, addr);
371 h = yaffs_open(fn, O_RDWR,0);
374 printf("File not found\n");
378 yaffs_read(h,addr,(int)s.st_size);
379 printf("\t[DONE]\n");
385 void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
389 outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
392 printf("Error opening file: %d, %s\n", outh, yaffs_error_str());
395 yaffs_write(outh,addr,size);
401 void cmd_yaffs_ls(const char *mountpt, int longlist)
406 struct yaffs_stat stat;
409 d = yaffs_opendir(mountpt);
412 printf("opendir failed, %s\n", yaffs_error_str());
416 for(i = 0; (de = yaffs_readdir(d)) != NULL; i++) {
418 sprintf(tempstr, "%s/%s", mountpt, de->d_name);
419 yaffs_lstat(tempstr, &stat);
420 printf("%-25s\t%7ld",
425 yaffs_file_type_str(&stat));
427 printf("%s\n",de->d_name);
435 void cmd_yaffs_mkdir(const char *dir)
437 int retval = yaffs_mkdir(dir, 0);
440 printf("yaffs_mkdir returning error: %d, %s\n",
441 retval, yaffs_error_str());
444 void cmd_yaffs_rmdir(const char *dir)
446 int retval = yaffs_rmdir(dir);
449 printf("yaffs_rmdir returning error: %d, %s\n",
450 retval, yaffs_error_str());
453 void cmd_yaffs_rm(const char *path)
455 int retval = yaffs_unlink(path);
458 printf("yaffs_unlink returning error: %d, %s\n",
459 retval, yaffs_error_str());
462 void cmd_yaffs_mv(const char *oldPath, const char *newPath)
464 int retval = yaffs_rename(newPath, oldPath);
467 printf("yaffs_unlink returning error: %d, %s\n",
468 retval, yaffs_error_str());