xref: /openbmc/u-boot/fs/yaffs2/yaffs_uboot_glue.c (revision 20b9f2ea) 
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 	mtd = get_nand_dev_by_index(flash_dev);
170 	if (!mtd) {
171 		pr_err("\nno NAND devices available\n");
172 		return;
173 	}
174 
175 	dev = calloc(1, sizeof(*dev));
176 	mp = strdup(_mp);
177 
178 	if (!dev || !mp) {
179 		/* Alloc error */
180 		printf("Failed to allocate memory\n");
181 		goto err;
182 	}
183 
184 	if (flash_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
185 		printf("Flash device invalid\n");
186 		goto err;
187 	}
188 
189 	if (end_block == 0)
190 		end_block = lldiv(mtd->size, mtd->erasesize - 1);
191 
192 	if (end_block < start_block) {
193 		printf("Bad start/end\n");
194 		goto err;
195 	}
196 
197 	chip =  mtd_to_nand(mtd);
198 
199 	/* Check for any conflicts */
200 	yaffs_dev_rewind();
201 	while (1) {
202 		chk = yaffs_next_dev();
203 		if (!chk)
204 			break;
205 		if (strcmp(chk->param.name, mp) == 0) {
206 			printf("Mount point name already used\n");
207 			goto err;
208 		}
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",
214 				chk->param.name);
215 			goto err;
216 		}
217 
218 	}
219 
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;
240 
241 	yaffs_add_device(dev);
242 
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" : "");
246 	return;
247 
248 err:
249 	free(dev);
250 	free(mp);
251 }
252 
253 void cmd_yaffs_dev_ls(void)
254 {
255 	struct yaffs_dev *dev;
256 	int flash_dev;
257 	int free_space;
258 
259 	yaffs_dev_rewind();
260 
261 	while (1) {
262 		dev = yaffs_next_dev();
263 		if (!dev)
264 			return;
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, " : "");
270 
271 		free_space = yaffs_freespace(dev->param.name);
272 		if (free_space < 0)
273 			printf("not mounted\n");
274 		else
275 			printf("free 0x%x\n", free_space);
276 
277 	}
278 }
279 
280 void make_a_file(char *yaffsName, char bval, int sizeOfFile)
281 {
282 	int outh;
283 	int i;
284 	unsigned char buffer[100];
285 
286 	outh = yaffs_open(yaffsName,
287 				O_CREAT | O_RDWR | O_TRUNC,
288 				S_IREAD | S_IWRITE);
289 	if (outh < 0) {
290 		printf("Error opening file: %d. %s\n", outh, yaffs_error_str());
291 		return;
292 	}
293 
294 	memset(buffer, bval, 100);
295 
296 	do {
297 		i = sizeOfFile;
298 		if (i > 100)
299 			i = 100;
300 		sizeOfFile -= i;
301 
302 		yaffs_write(outh, buffer, i);
303 
304 	} while (sizeOfFile > 0);
305 
306 
307 	yaffs_close(outh);
308 }
309 
310 void read_a_file(char *fn)
311 {
312 	int h;
313 	int i = 0;
314 	unsigned char b;
315 
316 	h = yaffs_open(fn, O_RDWR, 0);
317 	if (h < 0) {
318 		printf("File not found\n");
319 		return;
320 	}
321 
322 	while (yaffs_read(h, &b, 1) > 0) {
323 		printf("%02x ", b);
324 		i++;
325 		if (i > 32) {
326 			printf("\n");
327 			i = 0;
328 		}
329 	}
330 	printf("\n");
331 	yaffs_close(h);
332 }
333 
334 void cmd_yaffs_mount(char *mp)
335 {
336 	int retval = yaffs_mount(mp);
337 	if (retval < 0)
338 		printf("Error mounting %s, return value: %d, %s\n", mp,
339 			yaffsfs_GetError(), yaffs_error_str());
340 }
341 
342 
343 void cmd_yaffs_umount(char *mp)
344 {
345 	if (yaffs_unmount(mp) == -1)
346 		printf("Error umounting %s, return value: %d, %s\n", mp,
347 			yaffsfs_GetError(), yaffs_error_str());
348 }
349 
350 void cmd_yaffs_write_file(char *yaffsName, char bval, int sizeOfFile)
351 {
352 	make_a_file(yaffsName, bval, sizeOfFile);
353 }
354 
355 
356 void cmd_yaffs_read_file(char *fn)
357 {
358 	read_a_file(fn);
359 }
360 
361 
362 void cmd_yaffs_mread_file(char *fn, char *addr)
363 {
364 	int h;
365 	struct yaffs_stat s;
366 
367 	yaffs_stat(fn, &s);
368 
369 	printf("Copy %s to 0x%p... ", fn, addr);
370 	h = yaffs_open(fn, O_RDWR, 0);
371 	if (h < 0) {
372 		printf("File not found\n");
373 		return;
374 	}
375 
376 	yaffs_read(h, addr, (int)s.st_size);
377 	printf("\t[DONE]\n");
378 
379 	yaffs_close(h);
380 }
381 
382 
383 void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
384 {
385 	int outh;
386 
387 	outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
388 	if (outh < 0)
389 		printf("Error opening file: %d, %s\n", outh, yaffs_error_str());
390 
391 	yaffs_write(outh, addr, size);
392 
393 	yaffs_close(outh);
394 }
395 
396 
397 void cmd_yaffs_ls(const char *mountpt, int longlist)
398 {
399 	int i;
400 	yaffs_DIR *d;
401 	struct yaffs_dirent *de;
402 	struct yaffs_stat stat;
403 	char tempstr[255];
404 
405 	d = yaffs_opendir(mountpt);
406 
407 	if (!d) {
408 		printf("opendir failed, %s\n", yaffs_error_str());
409 		return;
410 	}
411 
412 	for (i = 0; (de = yaffs_readdir(d)) != NULL; i++) {
413 		if (longlist) {
414 			sprintf(tempstr, "%s/%s", mountpt, de->d_name);
415 			yaffs_lstat(tempstr, &stat);
416 			printf("%-25s\t%7ld",
417 					de->d_name,
418 					(long)stat.st_size);
419 			printf(" %5d %s\n",
420 					stat.st_ino,
421 					yaffs_file_type_str(&stat));
422 		} else {
423 			printf("%s\n", de->d_name);
424 		}
425 	}
426 
427 	yaffs_closedir(d);
428 }
429 
430 
431 void cmd_yaffs_mkdir(const char *dir)
432 {
433 	int retval = yaffs_mkdir(dir, 0);
434 
435 	if (retval < 0)
436 		printf("yaffs_mkdir returning error: %d, %s\n",
437 			retval, yaffs_error_str());
438 }
439 
440 void cmd_yaffs_rmdir(const char *dir)
441 {
442 	int retval = yaffs_rmdir(dir);
443 
444 	if (retval < 0)
445 		printf("yaffs_rmdir returning error: %d, %s\n",
446 			retval, yaffs_error_str());
447 }
448 
449 void cmd_yaffs_rm(const char *path)
450 {
451 	int retval = yaffs_unlink(path);
452 
453 	if (retval < 0)
454 		printf("yaffs_unlink returning error: %d, %s\n",
455 			retval, yaffs_error_str());
456 }
457 
458 void cmd_yaffs_mv(const char *oldPath, const char *newPath)
459 {
460 	int retval = yaffs_rename(newPath, oldPath);
461 
462 	if (retval < 0)
463 		printf("yaffs_unlink returning error: %d, %s\n",
464 			retval, yaffs_error_str());
465 }
466