xref: /openbmc/u-boot/fs/yaffs2/yaffs_uboot_glue.c (revision 730d2544) 
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 }
462