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.
30 #include "yaffs_packedtags2.h"
31 #include "yaffs_mtdif.h"
32 #include "yaffs_mtdif2.h"
38 #include <linux/mtd/rawnand.h>
40 unsigned yaffs_trace_mask = 0x0; /* Disable logging */
41 static int yaffs_errno;
44 void yaffs_bug_fn(const char *fn, int n)
46 printf("yaffs bug at %s:%d\n", fn, n);
49 void *yaffsfs_malloc(size_t x)
54 void yaffsfs_free(void *x)
59 void yaffsfs_SetError(int err)
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 /* No locking used */
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 void cmd_yaffs_tracemask(unsigned set, unsigned mask)
149 yaffs_trace_mask = mask;
151 printf("yaffs trace mask: %08x\n", yaffs_trace_mask);
154 static int yaffs_regions_overlap(int a, int b, int x, int y)
156 return (a <= x && x <= b) ||
157 (a <= y && y <= b) ||
158 (x <= a && a <= y) ||
162 void cmd_yaffs_devconfig(char *_mp, int flash_dev,
163 int start_block, int end_block)
165 struct mtd_info *mtd = NULL;
166 struct yaffs_dev *dev = NULL;
167 struct yaffs_dev *chk;
169 struct nand_chip *chip;
171 mtd = get_nand_dev_by_index(flash_dev);
173 pr_err("\nno NAND devices available\n");
177 dev = calloc(1, sizeof(*dev));
182 printf("Failed to allocate memory\n");
186 if (flash_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
187 printf("Flash device invalid\n");
192 end_block = lldiv(mtd->size, mtd->erasesize - 1);
194 if (end_block < start_block) {
195 printf("Bad start/end\n");
199 chip = mtd_to_nand(mtd);
201 /* Check for any conflicts */
204 chk = yaffs_next_dev();
207 if (strcmp(chk->param.name, mp) == 0) {
208 printf("Mount point name already used\n");
211 if (chk->driver_context == mtd &&
212 yaffs_regions_overlap(
213 chk->param.start_block, chk->param.end_block,
214 start_block, end_block)) {
215 printf("Region overlaps with partition %s\n",
222 /* Seems sane, so configure */
223 memset(dev, 0, sizeof(*dev));
224 dev->param.name = mp;
225 dev->driver_context = mtd;
226 dev->param.start_block = start_block;
227 dev->param.end_block = end_block;
228 dev->param.chunks_per_block = mtd->erasesize / mtd->writesize;
229 dev->param.total_bytes_per_chunk = mtd->writesize;
230 dev->param.is_yaffs2 = 1;
231 dev->param.use_nand_ecc = 1;
232 dev->param.n_reserved_blocks = 5;
233 if (chip->ecc.layout->oobavail < sizeof(struct yaffs_packed_tags2))
234 dev->param.inband_tags = 1;
235 dev->param.n_caches = 10;
236 dev->param.write_chunk_tags_fn = nandmtd2_write_chunk_tags;
237 dev->param.read_chunk_tags_fn = nandmtd2_read_chunk_tags;
238 dev->param.erase_fn = nandmtd_EraseBlockInNAND;
239 dev->param.initialise_flash_fn = nandmtd_InitialiseNAND;
240 dev->param.bad_block_fn = nandmtd2_MarkNANDBlockBad;
241 dev->param.query_block_fn = nandmtd2_QueryNANDBlock;
243 yaffs_add_device(dev);
245 printf("Configures yaffs mount %s: dev %d start block %d, end block %d %s\n",
246 mp, flash_dev, start_block, end_block,
247 dev->param.inband_tags ? "using inband tags" : "");
255 void cmd_yaffs_dev_ls(void)
257 struct yaffs_dev *dev;
264 dev = yaffs_next_dev();
267 flash_dev = nand_mtd_to_devnum(dev->driver_context);
268 printf("%-10s %5d 0x%05x 0x%05x %s",
269 dev->param.name, flash_dev,
270 dev->param.start_block, dev->param.end_block,
271 dev->param.inband_tags ? "using inband tags, " : "");
273 free_space = yaffs_freespace(dev->param.name);
275 printf("not mounted\n");
277 printf("free 0x%x\n", free_space);
282 void make_a_file(char *yaffsName, char bval, int sizeOfFile)
286 unsigned char buffer[100];
288 outh = yaffs_open(yaffsName,
289 O_CREAT | O_RDWR | O_TRUNC,
292 printf("Error opening file: %d. %s\n", outh, yaffs_error_str());
296 memset(buffer, bval, 100);
304 yaffs_write(outh, buffer, i);
306 } while (sizeOfFile > 0);
312 void read_a_file(char *fn)
318 h = yaffs_open(fn, O_RDWR, 0);
320 printf("File not found\n");
324 while (yaffs_read(h, &b, 1) > 0) {
336 void cmd_yaffs_mount(char *mp)
338 int retval = yaffs_mount(mp);
340 printf("Error mounting %s, return value: %d, %s\n", mp,
341 yaffsfs_GetError(), yaffs_error_str());
345 void cmd_yaffs_umount(char *mp)
347 if (yaffs_unmount(mp) == -1)
348 printf("Error umounting %s, return value: %d, %s\n", mp,
349 yaffsfs_GetError(), yaffs_error_str());
352 void cmd_yaffs_write_file(char *yaffsName, char bval, int sizeOfFile)
354 make_a_file(yaffsName, bval, sizeOfFile);
358 void cmd_yaffs_read_file(char *fn)
364 void cmd_yaffs_mread_file(char *fn, char *addr)
371 printf("Copy %s to 0x%p... ", fn, addr);
372 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);
391 printf("Error opening file: %d, %s\n", outh, yaffs_error_str());
393 yaffs_write(outh, addr, size);
399 void cmd_yaffs_ls(const char *mountpt, int longlist)
403 struct yaffs_dirent *de;
404 struct yaffs_stat stat;
407 d = yaffs_opendir(mountpt);
410 printf("opendir failed, %s\n", yaffs_error_str());
414 for (i = 0; (de = yaffs_readdir(d)) != NULL; i++) {
416 sprintf(tempstr, "%s/%s", mountpt, de->d_name);
417 yaffs_lstat(tempstr, &stat);
418 printf("%-25s\t%7ld",
423 yaffs_file_type_str(&stat));
425 printf("%s\n", de->d_name);
433 void cmd_yaffs_mkdir(const char *dir)
435 int retval = yaffs_mkdir(dir, 0);
438 printf("yaffs_mkdir returning error: %d, %s\n",
439 retval, yaffs_error_str());
442 void cmd_yaffs_rmdir(const char *dir)
444 int retval = yaffs_rmdir(dir);
447 printf("yaffs_rmdir returning error: %d, %s\n",
448 retval, yaffs_error_str());
451 void cmd_yaffs_rm(const char *path)
453 int retval = yaffs_unlink(path);
456 printf("yaffs_unlink returning error: %d, %s\n",
457 retval, yaffs_error_str());
460 void cmd_yaffs_mv(const char *oldPath, const char *newPath)
462 int retval = yaffs_rename(newPath, oldPath);
465 printf("yaffs_unlink returning error: %d, %s\n",
466 retval, yaffs_error_str());