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1da177e4 LT |
1 | /* |
2 | * Physical mapping layer for MTD using the Axis partitiontable format | |
3 | * | |
4 | * Copyright (c) 2001, 2002 Axis Communications AB | |
5 | * | |
6 | * This file is under the GPL. | |
7 | * | |
8 | * First partition is always sector 0 regardless of if we find a partitiontable | |
9 | * or not. In the start of the next sector, there can be a partitiontable that | |
10 | * tells us what other partitions to define. If there isn't, we use a default | |
11 | * partition split defined below. | |
12 | * | |
13 | * $Log: axisflashmap.c,v $ | |
7e920426 MS |
14 | * Revision 1.11 2004/11/15 10:27:14 starvik |
15 | * Corrected typo (Thanks to Milton Miller <miltonm@bga.com>). | |
16 | * | |
1da177e4 LT |
17 | * Revision 1.10 2004/08/16 12:37:22 starvik |
18 | * Merge of Linux 2.6.8 | |
19 | * | |
20 | * Revision 1.8 2004/05/14 07:58:03 starvik | |
21 | * Merge of changes from 2.4 | |
22 | * | |
23 | * Revision 1.6 2003/07/04 08:27:37 starvik | |
24 | * Merge of Linux 2.5.74 | |
25 | * | |
26 | * Revision 1.5 2002/12/11 13:13:57 starvik | |
27 | * Added arch/ to v10 specific includes | |
28 | * Added fix from Linux 2.4 in serial.c (flush_to_flip_buffer) | |
29 | * | |
30 | * Revision 1.4 2002/11/20 11:56:10 starvik | |
31 | * Merge of Linux 2.5.48 | |
32 | * | |
33 | * Revision 1.3 2002/11/13 14:54:13 starvik | |
34 | * Copied from linux 2.4 | |
35 | * | |
36 | * Revision 1.28 2002/10/01 08:08:43 jonashg | |
37 | * The first partition ends at the start of the partition table. | |
38 | * | |
39 | * Revision 1.27 2002/08/21 09:23:13 jonashg | |
40 | * Speling. | |
41 | * | |
42 | * Revision 1.26 2002/08/21 08:35:20 jonashg | |
43 | * Cosmetic change to printouts. | |
44 | * | |
45 | * Revision 1.25 2002/08/21 08:15:42 jonashg | |
46 | * Made it compile even without CONFIG_MTD_CONCAT defined. | |
47 | * | |
48 | * Revision 1.24 2002/08/20 13:12:35 jonashg | |
49 | * * New approach to probing. Probe cse0 and cse1 separately and (mtd)concat | |
50 | * the results. | |
51 | * * Removed compile time tests concerning how the mtdram driver has been | |
52 | * configured. The user will know about the misconfiguration at runtime | |
53 | * instead. (The old approach made it impossible to use mtdram for anything | |
54 | * else than RAM boot). | |
55 | * | |
56 | * Revision 1.23 2002/05/13 12:12:28 johana | |
57 | * Allow compile without CONFIG_MTD_MTDRAM but warn at compiletime and | |
58 | * be informative at runtime. | |
59 | * | |
60 | * Revision 1.22 2002/05/13 10:24:44 johana | |
61 | * Added #if checks on MTDRAM CONFIG | |
62 | * | |
63 | * Revision 1.21 2002/05/06 16:05:20 johana | |
64 | * Removed debug printout. | |
65 | * | |
66 | * Revision 1.20 2002/05/06 16:03:00 johana | |
67 | * No more cramfs as root hack in generic code. | |
68 | * It's handled by axisflashmap using mtdram. | |
69 | * | |
70 | * Revision 1.19 2002/03/15 17:10:28 bjornw | |
71 | * Changed comment about cached access since we changed this before | |
72 | * | |
73 | * Revision 1.18 2002/03/05 17:06:15 jonashg | |
74 | * Try amd_flash probe before cfi_probe since amd_flash driver can handle two | |
75 | * (or more) flash chips of different model and the cfi driver cannot. | |
76 | * | |
77 | * Revision 1.17 2001/11/12 19:42:38 pkj | |
78 | * Fixed compiler warnings. | |
79 | * | |
80 | * Revision 1.16 2001/11/08 11:18:58 jonashg | |
81 | * Always read from uncached address to avoid problems with flushing | |
82 | * cachelines after write and MTD-erase. No performance loss have been | |
83 | * seen yet. | |
84 | * | |
85 | * Revision 1.15 2001/10/19 12:41:04 jonashg | |
86 | * Name of probe has changed in MTD. | |
87 | * | |
88 | * Revision 1.14 2001/09/21 07:14:10 jonashg | |
89 | * Made root filesystem (cramfs) use mtdblock driver when booting from flash. | |
90 | * | |
91 | * Revision 1.13 2001/08/15 13:57:35 jonashg | |
92 | * Entire MTD updated to the linux 2.4.7 version. | |
93 | * | |
94 | * Revision 1.12 2001/06/11 09:50:30 jonashg | |
95 | * Oops, 2MB is 0x200000 bytes. | |
96 | * | |
97 | * Revision 1.11 2001/06/08 11:39:44 jonashg | |
98 | * Changed sizes and offsets in axis_default_partitions to use | |
99 | * CONFIG_ETRAX_PTABLE_SECTOR. | |
100 | * | |
101 | * Revision 1.10 2001/05/29 09:42:03 jonashg | |
102 | * Use macro for end marker length instead of sizeof. | |
103 | * | |
104 | * Revision 1.9 2001/05/29 08:52:52 jonashg | |
105 | * Gave names to the magic fours (size of the ptable end marker). | |
106 | * | |
107 | * Revision 1.8 2001/05/28 15:36:20 jonashg | |
108 | * * Removed old comment about ptable location in flash (it's a CONFIG_ option). | |
109 | * * Variable ptable was initialized twice to the same value. | |
110 | * | |
111 | * Revision 1.7 2001/04/05 13:41:46 markusl | |
112 | * Updated according to review remarks | |
113 | * | |
114 | * Revision 1.6 2001/03/07 09:21:21 bjornw | |
115 | * No need to waste .data | |
116 | * | |
117 | * Revision 1.5 2001/03/06 16:27:01 jonashg | |
118 | * Probe the entire flash area for flash devices. | |
119 | * | |
120 | * Revision 1.4 2001/02/23 12:47:15 bjornw | |
121 | * Uncached flash in LOW_MAP moved from 0xe to 0x8 | |
122 | * | |
123 | * Revision 1.3 2001/02/16 12:11:45 jonashg | |
124 | * MTD driver amd_flash is now included in MTD CVS repository. | |
125 | * (It's now in drivers/mtd). | |
126 | * | |
127 | * Revision 1.2 2001/02/09 11:12:22 jonashg | |
128 | * Support for AMD compatible non-CFI flash chips. | |
129 | * Only tested with Toshiba TC58FVT160 so far. | |
130 | * | |
131 | * Revision 1.1 2001/01/12 17:01:18 bjornw | |
132 | * * Added axisflashmap.c, a physical mapping for MTD that reads and understands | |
133 | * Axis partition-table format. | |
134 | * | |
135 | * | |
136 | */ | |
137 | ||
138 | #include <linux/module.h> | |
139 | #include <linux/types.h> | |
140 | #include <linux/kernel.h> | |
141 | #include <linux/config.h> | |
142 | #include <linux/init.h> | |
4e57b681 | 143 | #include <linux/slab.h> |
1da177e4 LT |
144 | |
145 | #include <linux/mtd/concat.h> | |
146 | #include <linux/mtd/map.h> | |
147 | #include <linux/mtd/mtd.h> | |
148 | #include <linux/mtd/mtdram.h> | |
149 | #include <linux/mtd/partitions.h> | |
150 | ||
151 | #include <asm/axisflashmap.h> | |
152 | #include <asm/mmu.h> | |
153 | #include <asm/arch/sv_addr_ag.h> | |
154 | ||
155 | #ifdef CONFIG_CRIS_LOW_MAP | |
156 | #define FLASH_UNCACHED_ADDR KSEG_8 | |
157 | #define FLASH_CACHED_ADDR KSEG_5 | |
158 | #else | |
159 | #define FLASH_UNCACHED_ADDR KSEG_E | |
160 | #define FLASH_CACHED_ADDR KSEG_F | |
161 | #endif | |
162 | ||
163 | #if CONFIG_ETRAX_FLASH_BUSWIDTH==1 | |
164 | #define flash_data __u8 | |
165 | #elif CONFIG_ETRAX_FLASH_BUSWIDTH==2 | |
166 | #define flash_data __u16 | |
167 | #elif CONFIG_ETRAX_FLASH_BUSWIDTH==4 | |
7e920426 | 168 | #define flash_data __u32 |
1da177e4 LT |
169 | #endif |
170 | ||
171 | /* From head.S */ | |
172 | extern unsigned long romfs_start, romfs_length, romfs_in_flash; | |
173 | ||
174 | /* The master mtd for the entire flash. */ | |
175 | struct mtd_info* axisflash_mtd = NULL; | |
176 | ||
177 | /* Map driver functions. */ | |
178 | ||
179 | static map_word flash_read(struct map_info *map, unsigned long ofs) | |
180 | { | |
181 | map_word tmp; | |
182 | tmp.x[0] = *(flash_data *)(map->map_priv_1 + ofs); | |
183 | return tmp; | |
184 | } | |
185 | ||
186 | static void flash_copy_from(struct map_info *map, void *to, | |
187 | unsigned long from, ssize_t len) | |
188 | { | |
189 | memcpy(to, (void *)(map->map_priv_1 + from), len); | |
190 | } | |
191 | ||
192 | static void flash_write(struct map_info *map, map_word d, unsigned long adr) | |
193 | { | |
194 | *(flash_data *)(map->map_priv_1 + adr) = (flash_data)d.x[0]; | |
195 | } | |
196 | ||
197 | /* | |
198 | * The map for chip select e0. | |
199 | * | |
200 | * We run into tricky coherence situations if we mix cached with uncached | |
201 | * accesses to we only use the uncached version here. | |
202 | * | |
203 | * The size field is the total size where the flash chips may be mapped on the | |
204 | * chip select. MTD probes should find all devices there and it does not matter | |
205 | * if there are unmapped gaps or aliases (mirrors of flash devices). The MTD | |
206 | * probes will ignore them. | |
207 | * | |
208 | * The start address in map_priv_1 is in virtual memory so we cannot use | |
209 | * MEM_CSE0_START but must rely on that FLASH_UNCACHED_ADDR is the start | |
210 | * address of cse0. | |
211 | */ | |
212 | static struct map_info map_cse0 = { | |
213 | .name = "cse0", | |
214 | .size = MEM_CSE0_SIZE, | |
215 | .bankwidth = CONFIG_ETRAX_FLASH_BUSWIDTH, | |
216 | .read = flash_read, | |
217 | .copy_from = flash_copy_from, | |
218 | .write = flash_write, | |
219 | .map_priv_1 = FLASH_UNCACHED_ADDR | |
220 | }; | |
221 | ||
222 | /* | |
223 | * The map for chip select e1. | |
224 | * | |
225 | * If there was a gap between cse0 and cse1, map_priv_1 would get the wrong | |
226 | * address, but there isn't. | |
227 | */ | |
228 | static struct map_info map_cse1 = { | |
229 | .name = "cse1", | |
230 | .size = MEM_CSE1_SIZE, | |
231 | .bankwidth = CONFIG_ETRAX_FLASH_BUSWIDTH, | |
232 | .read = flash_read, | |
233 | .copy_from = flash_copy_from, | |
234 | .write = flash_write, | |
235 | .map_priv_1 = FLASH_UNCACHED_ADDR + MEM_CSE0_SIZE | |
236 | }; | |
237 | ||
238 | /* If no partition-table was found, we use this default-set. */ | |
239 | #define MAX_PARTITIONS 7 | |
240 | #define NUM_DEFAULT_PARTITIONS 3 | |
241 | ||
242 | /* | |
243 | * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the | |
244 | * size of one flash block and "filesystem"-partition needs 5 blocks to be able | |
245 | * to use JFFS. | |
246 | */ | |
247 | static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = { | |
248 | { | |
249 | .name = "boot firmware", | |
250 | .size = CONFIG_ETRAX_PTABLE_SECTOR, | |
251 | .offset = 0 | |
252 | }, | |
253 | { | |
254 | .name = "kernel", | |
255 | .size = 0x200000 - (6 * CONFIG_ETRAX_PTABLE_SECTOR), | |
256 | .offset = CONFIG_ETRAX_PTABLE_SECTOR | |
257 | }, | |
258 | { | |
259 | .name = "filesystem", | |
260 | .size = 5 * CONFIG_ETRAX_PTABLE_SECTOR, | |
261 | .offset = 0x200000 - (5 * CONFIG_ETRAX_PTABLE_SECTOR) | |
262 | } | |
263 | }; | |
264 | ||
265 | /* Initialize the ones normally used. */ | |
266 | static struct mtd_partition axis_partitions[MAX_PARTITIONS] = { | |
267 | { | |
268 | .name = "part0", | |
269 | .size = CONFIG_ETRAX_PTABLE_SECTOR, | |
270 | .offset = 0 | |
271 | }, | |
272 | { | |
273 | .name = "part1", | |
274 | .size = 0, | |
275 | .offset = 0 | |
276 | }, | |
277 | { | |
278 | .name = "part2", | |
279 | .size = 0, | |
280 | .offset = 0 | |
281 | }, | |
282 | { | |
283 | .name = "part3", | |
284 | .size = 0, | |
285 | .offset = 0 | |
286 | }, | |
287 | { | |
288 | .name = "part4", | |
289 | .size = 0, | |
290 | .offset = 0 | |
291 | }, | |
292 | { | |
293 | .name = "part5", | |
294 | .size = 0, | |
295 | .offset = 0 | |
296 | }, | |
297 | { | |
298 | .name = "part6", | |
299 | .size = 0, | |
300 | .offset = 0 | |
301 | }, | |
302 | }; | |
303 | ||
304 | /* | |
305 | * Probe a chip select for AMD-compatible (JEDEC) or CFI-compatible flash | |
306 | * chips in that order (because the amd_flash-driver is faster). | |
307 | */ | |
308 | static struct mtd_info *probe_cs(struct map_info *map_cs) | |
309 | { | |
310 | struct mtd_info *mtd_cs = NULL; | |
311 | ||
312 | printk(KERN_INFO | |
313 | "%s: Probing a 0x%08lx bytes large window at 0x%08lx.\n", | |
314 | map_cs->name, map_cs->size, map_cs->map_priv_1); | |
315 | ||
316 | #ifdef CONFIG_MTD_AMDSTD | |
317 | mtd_cs = do_map_probe("amd_flash", map_cs); | |
318 | #endif | |
319 | #ifdef CONFIG_MTD_CFI | |
320 | if (!mtd_cs) { | |
321 | mtd_cs = do_map_probe("cfi_probe", map_cs); | |
322 | } | |
323 | #endif | |
324 | ||
325 | return mtd_cs; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Probe each chip select individually for flash chips. If there are chips on | |
330 | * both cse0 and cse1, the mtd_info structs will be concatenated to one struct | |
331 | * so that MTD partitions can cross chip boundries. | |
332 | * | |
333 | * The only known restriction to how you can mount your chips is that each | |
334 | * chip select must hold similar flash chips. But you need external hardware | |
335 | * to do that anyway and you can put totally different chips on cse0 and cse1 | |
336 | * so it isn't really much of a restriction. | |
337 | */ | |
338 | static struct mtd_info *flash_probe(void) | |
339 | { | |
340 | struct mtd_info *mtd_cse0; | |
341 | struct mtd_info *mtd_cse1; | |
342 | struct mtd_info *mtd_cse; | |
343 | ||
344 | mtd_cse0 = probe_cs(&map_cse0); | |
345 | mtd_cse1 = probe_cs(&map_cse1); | |
346 | ||
347 | if (!mtd_cse0 && !mtd_cse1) { | |
348 | /* No chip found. */ | |
349 | return NULL; | |
350 | } | |
351 | ||
352 | if (mtd_cse0 && mtd_cse1) { | |
353 | #ifdef CONFIG_MTD_CONCAT | |
354 | struct mtd_info *mtds[] = { mtd_cse0, mtd_cse1 }; | |
355 | ||
356 | /* Since the concatenation layer adds a small overhead we | |
357 | * could try to figure out if the chips in cse0 and cse1 are | |
358 | * identical and reprobe the whole cse0+cse1 window. But since | |
359 | * flash chips are slow, the overhead is relatively small. | |
360 | * So we use the MTD concatenation layer instead of further | |
361 | * complicating the probing procedure. | |
362 | */ | |
363 | mtd_cse = mtd_concat_create(mtds, | |
364 | sizeof(mtds) / sizeof(mtds[0]), | |
365 | "cse0+cse1"); | |
366 | #else | |
367 | printk(KERN_ERR "%s and %s: Cannot concatenate due to kernel " | |
368 | "(mis)configuration!\n", map_cse0.name, map_cse1.name); | |
369 | mtd_cse = NULL; | |
370 | #endif | |
371 | if (!mtd_cse) { | |
372 | printk(KERN_ERR "%s and %s: Concatenation failed!\n", | |
373 | map_cse0.name, map_cse1.name); | |
374 | ||
375 | /* The best we can do now is to only use what we found | |
376 | * at cse0. | |
377 | */ | |
378 | mtd_cse = mtd_cse0; | |
379 | map_destroy(mtd_cse1); | |
380 | } | |
381 | } else { | |
382 | mtd_cse = mtd_cse0? mtd_cse0 : mtd_cse1; | |
383 | } | |
384 | ||
385 | return mtd_cse; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Probe the flash chip(s) and, if it succeeds, read the partition-table | |
390 | * and register the partitions with MTD. | |
391 | */ | |
392 | static int __init init_axis_flash(void) | |
393 | { | |
394 | struct mtd_info *mymtd; | |
395 | int err = 0; | |
396 | int pidx = 0; | |
397 | struct partitiontable_head *ptable_head = NULL; | |
398 | struct partitiontable_entry *ptable; | |
399 | int use_default_ptable = 1; /* Until proven otherwise. */ | |
400 | const char *pmsg = " /dev/flash%d at 0x%08x, size 0x%08x\n"; | |
401 | ||
402 | if (!(mymtd = flash_probe())) { | |
403 | /* There's no reason to use this module if no flash chip can | |
404 | * be identified. Make sure that's understood. | |
405 | */ | |
406 | printk(KERN_INFO "axisflashmap: Found no flash chip.\n"); | |
407 | } else { | |
408 | printk(KERN_INFO "%s: 0x%08x bytes of flash memory.\n", | |
409 | mymtd->name, mymtd->size); | |
410 | axisflash_mtd = mymtd; | |
411 | } | |
412 | ||
413 | if (mymtd) { | |
414 | mymtd->owner = THIS_MODULE; | |
415 | ptable_head = (struct partitiontable_head *)(FLASH_CACHED_ADDR + | |
416 | CONFIG_ETRAX_PTABLE_SECTOR + | |
417 | PARTITION_TABLE_OFFSET); | |
418 | } | |
419 | pidx++; /* First partition is always set to the default. */ | |
420 | ||
421 | if (ptable_head && (ptable_head->magic == PARTITION_TABLE_MAGIC) | |
422 | && (ptable_head->size < | |
423 | (MAX_PARTITIONS * sizeof(struct partitiontable_entry) + | |
424 | PARTITIONTABLE_END_MARKER_SIZE)) | |
425 | && (*(unsigned long*)((void*)ptable_head + sizeof(*ptable_head) + | |
426 | ptable_head->size - | |
427 | PARTITIONTABLE_END_MARKER_SIZE) | |
428 | == PARTITIONTABLE_END_MARKER)) { | |
429 | /* Looks like a start, sane length and end of a | |
430 | * partition table, lets check csum etc. | |
431 | */ | |
432 | int ptable_ok = 0; | |
433 | struct partitiontable_entry *max_addr = | |
434 | (struct partitiontable_entry *) | |
435 | ((unsigned long)ptable_head + sizeof(*ptable_head) + | |
436 | ptable_head->size); | |
437 | unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR; | |
438 | unsigned char *p; | |
439 | unsigned long csum = 0; | |
440 | ||
441 | ptable = (struct partitiontable_entry *) | |
442 | ((unsigned long)ptable_head + sizeof(*ptable_head)); | |
443 | ||
444 | /* Lets be PARANOID, and check the checksum. */ | |
445 | p = (unsigned char*) ptable; | |
446 | ||
447 | while (p <= (unsigned char*)max_addr) { | |
448 | csum += *p++; | |
449 | csum += *p++; | |
450 | csum += *p++; | |
451 | csum += *p++; | |
452 | } | |
453 | ptable_ok = (csum == ptable_head->checksum); | |
454 | ||
455 | /* Read the entries and use/show the info. */ | |
456 | printk(KERN_INFO " Found a%s partition table at 0x%p-0x%p.\n", | |
457 | (ptable_ok ? " valid" : "n invalid"), ptable_head, | |
458 | max_addr); | |
459 | ||
460 | /* We have found a working bootblock. Now read the | |
461 | * partition table. Scan the table. It ends when | |
462 | * there is 0xffffffff, that is, empty flash. | |
463 | */ | |
464 | while (ptable_ok | |
465 | && ptable->offset != 0xffffffff | |
466 | && ptable < max_addr | |
467 | && pidx < MAX_PARTITIONS) { | |
468 | ||
469 | axis_partitions[pidx].offset = offset + ptable->offset; | |
470 | axis_partitions[pidx].size = ptable->size; | |
471 | ||
472 | printk(pmsg, pidx, axis_partitions[pidx].offset, | |
473 | axis_partitions[pidx].size); | |
474 | pidx++; | |
475 | ptable++; | |
476 | } | |
477 | use_default_ptable = !ptable_ok; | |
478 | } | |
479 | ||
480 | if (romfs_in_flash) { | |
481 | /* Add an overlapping device for the root partition (romfs). */ | |
482 | ||
483 | axis_partitions[pidx].name = "romfs"; | |
484 | axis_partitions[pidx].size = romfs_length; | |
485 | axis_partitions[pidx].offset = romfs_start - FLASH_CACHED_ADDR; | |
486 | axis_partitions[pidx].mask_flags |= MTD_WRITEABLE; | |
487 | ||
488 | printk(KERN_INFO | |
489 | " Adding readonly flash partition for romfs image:\n"); | |
490 | printk(pmsg, pidx, axis_partitions[pidx].offset, | |
491 | axis_partitions[pidx].size); | |
492 | pidx++; | |
493 | } | |
494 | ||
495 | if (mymtd) { | |
496 | if (use_default_ptable) { | |
497 | printk(KERN_INFO " Using default partition table.\n"); | |
498 | err = add_mtd_partitions(mymtd, axis_default_partitions, | |
499 | NUM_DEFAULT_PARTITIONS); | |
500 | } else { | |
501 | err = add_mtd_partitions(mymtd, axis_partitions, pidx); | |
502 | } | |
503 | ||
504 | if (err) { | |
505 | panic("axisflashmap could not add MTD partitions!\n"); | |
506 | } | |
507 | } | |
508 | ||
509 | if (!romfs_in_flash) { | |
510 | /* Create an RAM device for the root partition (romfs). */ | |
511 | ||
512 | #if !defined(CONFIG_MTD_MTDRAM) || (CONFIG_MTDRAM_TOTAL_SIZE != 0) || (CONFIG_MTDRAM_ABS_POS != 0) | |
513 | /* No use trying to boot this kernel from RAM. Panic! */ | |
514 | printk(KERN_EMERG "axisflashmap: Cannot create an MTD RAM " | |
515 | "device due to kernel (mis)configuration!\n"); | |
516 | panic("This kernel cannot boot from RAM!\n"); | |
517 | #else | |
518 | struct mtd_info *mtd_ram; | |
519 | ||
520 | mtd_ram = (struct mtd_info *)kmalloc(sizeof(struct mtd_info), | |
521 | GFP_KERNEL); | |
522 | if (!mtd_ram) { | |
523 | panic("axisflashmap couldn't allocate memory for " | |
524 | "mtd_info!\n"); | |
525 | } | |
526 | ||
527 | printk(KERN_INFO " Adding RAM partition for romfs image:\n"); | |
528 | printk(pmsg, pidx, romfs_start, romfs_length); | |
529 | ||
530 | err = mtdram_init_device(mtd_ram, (void*)romfs_start, | |
531 | romfs_length, "romfs"); | |
532 | if (err) { | |
533 | panic("axisflashmap could not initialize MTD RAM " | |
534 | "device!\n"); | |
535 | } | |
536 | #endif | |
537 | } | |
538 | ||
539 | return err; | |
540 | } | |
541 | ||
542 | /* This adds the above to the kernels init-call chain. */ | |
543 | module_init(init_axis_flash); | |
544 | ||
545 | EXPORT_SYMBOL(axisflash_mtd); |