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.
29 #include "yaffs_packedtags2.h"
30 #include "yaffs_mtdif.h"
31 #include "yaffs_mtdif2.h"
38 unsigned yaffs_trace_mask = 0x0; /* Disable logging */
39 static int yaffs_errno;
42 void yaffs_bug_fn(const char *fn, int n)
44 printf("yaffs bug at %s:%d\n", fn, n);
47 void *yaffsfs_malloc(size_t x)
52 void yaffsfs_free(void *x)
57 void yaffsfs_SetError(int err)
62 int yaffsfs_GetLastError(void)
68 int yaffsfs_GetError(void)
73 void yaffsfs_Lock(void)
77 void yaffsfs_Unlock(void)
81 __u32 yaffsfs_CurrentTime(void)
86 void *yaffs_malloc(size_t size)
91 void yaffs_free(void *ptr)
96 void yaffsfs_LocalInitialisation(void)
102 static const char *yaffs_file_type_str(struct yaffs_stat *stat)
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";
112 static const char *yaffs_error_str(void)
114 int error = yaffsfs_GetLastError();
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";
144 void cmd_yaffs_tracemask(unsigned set, unsigned mask)
147 yaffs_trace_mask = mask;
149 printf("yaffs trace mask: %08x\n", yaffs_trace_mask);
152 static int yaffs_regions_overlap(int a, int b, int x, int y)
154 return (a <= x && x <= b) ||
155 (a <= y && y <= b) ||
156 (x <= a && a <= y) ||
160 void cmd_yaffs_devconfig(char *_mp, int flash_dev,
161 int start_block, int end_block)
163 struct mtd_info *mtd = NULL;
164 struct yaffs_dev *dev = NULL;
165 struct yaffs_dev *chk;
167 struct nand_chip *chip;
169 mtd = get_nand_dev_by_index(flash_dev);
171 pr_err("\nno NAND devices available\n");
175 dev = calloc(1, sizeof(*dev));
180 printf("Failed to allocate memory\n");
184 if (flash_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
185 printf("Flash device invalid\n");
190 end_block = lldiv(mtd->size, mtd->erasesize - 1);
192 if (end_block < start_block) {
193 printf("Bad start/end\n");
197 chip = mtd_to_nand(mtd);
199 /* Check for any conflicts */
202 chk = yaffs_next_dev();
205 if (strcmp(chk->param.name, mp) == 0) {
206 printf("Mount point name already used\n");
209 if (chk->driver_context == mtd &&
210 yaffs_regions_overlap(
211 chk->param.start_block, chk->param.end_block,
212 start_block, end_block)) {
213 printf("Region overlaps with partition %s\n",
220 /* Seems sane, so configure */
221 memset(dev, 0, sizeof(*dev));
222 dev->param.name = mp;
223 dev->driver_context = mtd;
224 dev->param.start_block = start_block;
225 dev->param.end_block = end_block;
226 dev->param.chunks_per_block = mtd->erasesize / mtd->writesize;
227 dev->param.total_bytes_per_chunk = mtd->writesize;
228 dev->param.is_yaffs2 = 1;
229 dev->param.use_nand_ecc = 1;
230 dev->param.n_reserved_blocks = 5;
231 if (chip->ecc.layout->oobavail < sizeof(struct yaffs_packed_tags2))
232 dev->param.inband_tags = 1;
233 dev->param.n_caches = 10;
234 dev->param.write_chunk_tags_fn = nandmtd2_write_chunk_tags;
235 dev->param.read_chunk_tags_fn = nandmtd2_read_chunk_tags;
236 dev->param.erase_fn = nandmtd_EraseBlockInNAND;
237 dev->param.initialise_flash_fn = nandmtd_InitialiseNAND;
238 dev->param.bad_block_fn = nandmtd2_MarkNANDBlockBad;
239 dev->param.query_block_fn = nandmtd2_QueryNANDBlock;
241 yaffs_add_device(dev);
243 printf("Configures yaffs mount %s: dev %d start block %d, end block %d %s\n",
244 mp, flash_dev, start_block, end_block,
245 dev->param.inband_tags ? "using inband tags" : "");
253 void cmd_yaffs_dev_ls(void)
255 struct yaffs_dev *dev;
262 dev = yaffs_next_dev();
265 flash_dev = nand_mtd_to_devnum(dev->driver_context);
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,
287 O_CREAT | O_RDWR | O_TRUNC,
290 printf("Error opening file: %d. %s\n", outh, yaffs_error_str());
294 memset(buffer, bval, 100);
302 yaffs_write(outh, buffer, i);
304 } while (sizeOfFile > 0);
310 void read_a_file(char *fn)
316 h = yaffs_open(fn, O_RDWR, 0);
318 printf("File not found\n");
322 while (yaffs_read(h, &b, 1) > 0) {
334 void cmd_yaffs_mount(char *mp)
336 int retval = yaffs_mount(mp);
338 printf("Error mounting %s, return value: %d, %s\n", mp,
339 yaffsfs_GetError(), yaffs_error_str());
343 void cmd_yaffs_umount(char *mp)
345 if (yaffs_unmount(mp) == -1)
346 printf("Error umounting %s, return value: %d, %s\n", mp,
347 yaffsfs_GetError(), yaffs_error_str());
350 void cmd_yaffs_write_file(char *yaffsName, char bval, int sizeOfFile)
352 make_a_file(yaffsName, bval, sizeOfFile);
356 void cmd_yaffs_read_file(char *fn)
362 void cmd_yaffs_mread_file(char *fn, char *addr)
369 printf("Copy %s to 0x%p... ", fn, addr);
370 h = yaffs_open(fn, O_RDWR, 0);
372 printf("File not found\n");
376 yaffs_read(h, addr, (int)s.st_size);
377 printf("\t[DONE]\n");
383 void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
387 outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
389 printf("Error opening file: %d, %s\n", outh, yaffs_error_str());
391 yaffs_write(outh, addr, size);
397 void cmd_yaffs_ls(const char *mountpt, int longlist)
401 struct yaffs_dirent *de;
402 struct yaffs_stat stat;
405 d = yaffs_opendir(mountpt);
408 printf("opendir failed, %s\n", yaffs_error_str());
412 for (i = 0; (de = yaffs_readdir(d)) != NULL; i++) {
414 sprintf(tempstr, "%s/%s", mountpt, de->d_name);
415 yaffs_lstat(tempstr, &stat);
416 printf("%-25s\t%7ld",
421 yaffs_file_type_str(&stat));
423 printf("%s\n", de->d_name);
431 void cmd_yaffs_mkdir(const char *dir)
433 int retval = yaffs_mkdir(dir, 0);
436 printf("yaffs_mkdir returning error: %d, %s\n",
437 retval, yaffs_error_str());
440 void cmd_yaffs_rmdir(const char *dir)
442 int retval = yaffs_rmdir(dir);
445 printf("yaffs_rmdir returning error: %d, %s\n",
446 retval, yaffs_error_str());
449 void cmd_yaffs_rm(const char *path)
451 int retval = yaffs_unlink(path);
454 printf("yaffs_unlink returning error: %d, %s\n",
455 retval, yaffs_error_str());
458 void cmd_yaffs_mv(const char *oldPath, const char *newPath)
460 int retval = yaffs_rename(newPath, oldPath);
463 printf("yaffs_unlink returning error: %d, %s\n",
464 retval, yaffs_error_str());