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brcm47xx: fix partition layout on SimpleShare devices.
[openwrt/svn-archive/archive.git] / target / linux / brcm47xx / files / drivers / mtd / maps / bcm47xx-flash.c
1 /*
2 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
4 * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
5 *
6 * original functions for finding root filesystem from Mike Baker
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 *
28 * Copyright 2001-2003, Broadcom Corporation
29 * All Rights Reserved.
30 *
31 * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
32 * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
33 * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
34 * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
35 *
36 * Flash mapping for BCM947XX boards
37 */
38
39 #include <linux/init.h>
40 #include <linux/module.h>
41 #include <linux/types.h>
42 #include <linux/kernel.h>
43 #include <linux/sched.h>
44 #include <linux/wait.h>
45 #include <linux/mtd/mtd.h>
46 #include <linux/mtd/map.h>
47 #ifdef CONFIG_MTD_PARTITIONS
48 #include <linux/mtd/partitions.h>
49 #endif
50 #include <linux/crc32.h>
51 #ifdef CONFIG_SSB
52 #include <linux/ssb/ssb.h>
53 #endif
54 #include <asm/io.h>
55 #include <asm/mach-bcm47xx/nvram.h>
56 #include <asm/fw/cfe/cfe_api.h>
57
58
59 #define TRX_MAGIC 0x30524448 /* "HDR0" */
60 #define TRX_VERSION 1
61 #define TRX_MAX_LEN 0x3A0000
62 #define TRX_NO_HEADER 1 /* Do not write TRX header */
63 #define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */
64 #define TRX_MAX_OFFSET 3
65
66 struct trx_header {
67 u32 magic; /* "HDR0" */
68 u32 len; /* Length of file including header */
69 u32 crc32; /* 32-bit CRC from flag_version to end of file */
70 u32 flag_version; /* 0:15 flags, 16:31 version */
71 u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
72 };
73
74 /* for Edimax Print servers which use an additional header
75 * then the firmware on flash looks like :
76 * EDIMAX HEADER | TRX HEADER
77 * As this header is 12 bytes long we have to handle it
78 * and skip it to find the TRX header
79 */
80 #define EDIMAX_PS_HEADER_MAGIC 0x36315350 /* "PS16" */
81 #define EDIMAX_PS_HEADER_LEN 0xc /* 12 bytes long for edimax header */
82
83 #define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
84 #define NVRAM_SPACE 0x8000
85 #define WINDOW_ADDR 0x1fc00000
86 #define WINDOW_SIZE 0x400000
87 #define BUSWIDTH 2
88
89 #define ROUTER_NETGEAR_WGR614L 1
90 #define ROUTER_NETGEAR_WNR834B 2
91 #define ROUTER_NETGEAR_WNDR3300 3
92 #define ROUTER_NETGEAR_WNR3500L 4
93 #define ROUTER_SIMPLETECH_SIMPLESHARE 5
94
95 #ifdef CONFIG_SSB
96 extern struct ssb_bus ssb_bcm47xx;
97 #endif
98 static struct mtd_info *bcm47xx_mtd;
99
100 static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
101 {
102 if (len==1) {
103 memcpy_fromio(to, map->virt + from, len);
104 } else {
105 int i;
106 u16 *dest = (u16 *) to;
107 u16 *src = (u16 *) (map->virt + from);
108 for (i = 0; i < (len / 2); i++) {
109 dest[i] = src[i];
110 }
111 if (len & 1)
112 *((u8 *)dest+len-1) = src[i] & 0xff;
113 }
114 }
115
116 static struct map_info bcm47xx_map = {
117 name: "Physically mapped flash",
118 size: WINDOW_SIZE,
119 bankwidth: BUSWIDTH,
120 phys: WINDOW_ADDR,
121 };
122
123 #ifdef CONFIG_MTD_PARTITIONS
124
125 static struct mtd_partition bcm47xx_parts[] = {
126 { name: "cfe", offset: 0, size: 0, mask_flags: MTD_WRITEABLE, },
127 { name: "linux", offset: 0, size: 0, },
128 { name: "rootfs", offset: 0, size: 0, },
129 { name: "nvram", offset: 0, size: 0, },
130 { name: NULL, }, /* Used to create custom partitons with the function get_router() */
131 { name: NULL, },
132 };
133
134 static int __init
135 find_cfe_size(struct mtd_info *mtd, size_t size)
136 {
137 struct trx_header *trx;
138 unsigned char buf[512];
139 int off;
140 size_t len;
141 int blocksize;
142
143 trx = (struct trx_header *) buf;
144
145 blocksize = mtd->erasesize;
146 if (blocksize < 0x10000)
147 blocksize = 0x10000;
148
149 for (off = (128*1024); off < size; off += blocksize) {
150 memset(buf, 0xe5, sizeof(buf));
151
152 /*
153 * Read into buffer
154 */
155 if (mtd->read(mtd, off, sizeof(buf), &len, buf) ||
156 len != sizeof(buf))
157 continue;
158
159 if (le32_to_cpu(trx->magic) == EDIMAX_PS_HEADER_MAGIC) {
160 if (mtd->read(mtd, off + EDIMAX_PS_HEADER_LEN,
161 sizeof(buf), &len, buf) || len != sizeof(buf)) {
162 continue;
163 } else {
164 printk(KERN_NOTICE"Found edimax header\n");
165 }
166 }
167
168 /* found a TRX header */
169 if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
170 goto found;
171 }
172 }
173
174 printk(KERN_NOTICE
175 "%s: Couldn't find bootloader size\n",
176 mtd->name);
177 return -1;
178
179 found:
180 printk(KERN_NOTICE "bootloader size: %d\n", off);
181 return off;
182
183 }
184
185 /*
186 * Copied from mtdblock.c
187 *
188 * Cache stuff...
189 *
190 * Since typical flash erasable sectors are much larger than what Linux's
191 * buffer cache can handle, we must implement read-modify-write on flash
192 * sectors for each block write requests. To avoid over-erasing flash sectors
193 * and to speed things up, we locally cache a whole flash sector while it is
194 * being written to until a different sector is required.
195 */
196
197 static void erase_callback(struct erase_info *done)
198 {
199 wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
200 wake_up(wait_q);
201 }
202
203 static int erase_write (struct mtd_info *mtd, unsigned long pos,
204 int len, const char *buf)
205 {
206 struct erase_info erase;
207 DECLARE_WAITQUEUE(wait, current);
208 wait_queue_head_t wait_q;
209 size_t retlen;
210 int ret;
211
212 /*
213 * First, let's erase the flash block.
214 */
215
216 init_waitqueue_head(&wait_q);
217 erase.mtd = mtd;
218 erase.callback = erase_callback;
219 erase.addr = pos;
220 erase.len = len;
221 erase.priv = (u_long)&wait_q;
222
223 set_current_state(TASK_INTERRUPTIBLE);
224 add_wait_queue(&wait_q, &wait);
225
226 ret = mtd->erase(mtd, &erase);
227 if (ret) {
228 set_current_state(TASK_RUNNING);
229 remove_wait_queue(&wait_q, &wait);
230 printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
231 "on \"%s\" failed\n",
232 pos, len, mtd->name);
233 return ret;
234 }
235
236 schedule(); /* Wait for erase to finish. */
237 remove_wait_queue(&wait_q, &wait);
238
239 /*
240 * Next, write data to flash.
241 */
242
243 ret = mtd->write (mtd, pos, len, &retlen, buf);
244 if (ret)
245 return ret;
246 if (retlen != len)
247 return -EIO;
248 return 0;
249 }
250
251
252 static int __init
253 find_dual_image_off (struct mtd_info *mtd, size_t size)
254 {
255 struct trx_header trx;
256 int off, blocksize;
257 size_t len;
258
259 blocksize = mtd->erasesize;
260 if (blocksize < 0x10000)
261 blocksize = 0x10000;
262
263 for (off = (128*1024); off < size; off += blocksize) {
264 memset(&trx, 0xe5, sizeof(trx));
265 /*
266 * Read into buffer
267 */
268 if (mtd->read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
269 len != sizeof(trx))
270 continue;
271 /* found last TRX header */
272 if (le32_to_cpu(trx.magic) == TRX_MAGIC){
273 if (le32_to_cpu(trx.flag_version >> 16)==2){
274 printk("dual image TRX header found\n");
275 return size/2;
276 } else {
277 return 0;
278 }
279 }
280 }
281 return 0;
282 }
283
284
285 static int __init
286 find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
287 {
288 struct trx_header trx, *trx2;
289 unsigned char buf[512], *block;
290 int off, blocksize, trxoff = 0;
291 u32 i, crc = ~0;
292 size_t len;
293 bool edimax = false;
294
295 blocksize = mtd->erasesize;
296 if (blocksize < 0x10000)
297 blocksize = 0x10000;
298
299 for (off = (128*1024); off < size; off += blocksize) {
300 memset(&trx, 0xe5, sizeof(trx));
301
302 /*
303 * Read into buffer
304 */
305 if (mtd->read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
306 len != sizeof(trx))
307 continue;
308
309 /* found an edimax header */
310 if (le32_to_cpu(trx.magic) == EDIMAX_PS_HEADER_MAGIC) {
311 /* read the correct trx header */
312 if (mtd->read(mtd, off + EDIMAX_PS_HEADER_LEN,
313 sizeof(trx), &len, (char *) &trx) ||
314 len != sizeof(trx)) {
315 continue;
316 } else {
317 printk(KERN_NOTICE"Found an edimax ps header\n");
318 edimax = true;
319 }
320 }
321
322 /* found a TRX header */
323 if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
324 part->offset = le32_to_cpu(trx.offsets[2]) ? :
325 le32_to_cpu(trx.offsets[1]);
326 part->size = le32_to_cpu(trx.len);
327
328 part->size -= part->offset;
329 part->offset += off;
330 if (edimax) {
331 off += EDIMAX_PS_HEADER_LEN;
332 trxoff = EDIMAX_PS_HEADER_LEN;
333 }
334
335 goto found;
336 }
337 }
338
339 printk(KERN_NOTICE
340 "%s: Couldn't find root filesystem\n",
341 mtd->name);
342 return -1;
343
344 found:
345 printk(KERN_NOTICE"TRX offset : %x\n", trxoff);
346 if (part->size == 0)
347 return 0;
348
349 if (mtd->read(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
350 return 0;
351
352 /* Move the fs outside of the trx */
353 part->size = 0;
354
355 if (trx.len != part->offset + part->size - off) {
356 /* Update the trx offsets and length */
357 trx.len = part->offset + part->size - off;
358
359 /* Update the trx crc32 */
360 for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) {
361 if (mtd->read(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf))
362 return 0;
363 crc = crc32_le(crc, buf, min(sizeof(buf), trx.len - i));
364 }
365 trx.crc32 = crc;
366
367 /* read first eraseblock from the trx */
368 block = kmalloc(mtd->erasesize, GFP_KERNEL);
369 trx2 = (struct trx_header *) block;
370 if (mtd->read(mtd, off - trxoff, mtd->erasesize, &len, block) || len != mtd->erasesize) {
371 printk("Error accessing the first trx eraseblock\n");
372 return 0;
373 }
374
375 printk("Updating TRX offsets and length:\n");
376 printk("old trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx2->offsets[0], trx2->offsets[1], trx2->offsets[2], trx2->len, trx2->crc32);
377 printk("new trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx.offsets[0], trx.offsets[1], trx.offsets[2], trx.len, trx.crc32);
378
379 /* Write updated trx header to the flash */
380 memcpy(block + trxoff, &trx, sizeof(trx));
381 if (mtd->unlock)
382 mtd->unlock(mtd, off - trxoff, mtd->erasesize);
383 erase_write(mtd, off - trxoff, mtd->erasesize, block);
384 if (mtd->sync)
385 mtd->sync(mtd);
386 kfree(block);
387 printk("Done\n");
388 }
389
390 return part->size;
391 }
392
393 static int get_router(void)
394 {
395 char buf[20];
396 u32 boardnum = 0;
397 u16 boardtype = 0;
398 u16 boardrev = 0;
399 u32 boardflags = 0;
400 u16 sdram_init = 0;
401 u16 cardbus = 0;
402 u16 strev = 0;
403
404 if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0)
405 boardnum = simple_strtoul(buf, NULL, 0);
406 if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
407 boardtype = simple_strtoul(buf, NULL, 0);
408 if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
409 boardrev = simple_strtoul(buf, NULL, 0);
410 if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0)
411 boardflags = simple_strtoul(buf, NULL, 0);
412 if (nvram_getenv("sdram_init", buf, sizeof(buf)) >= 0)
413 sdram_init = simple_strtoul(buf, NULL, 0);
414 if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
415 cardbus = simple_strtoul(buf, NULL, 0);
416 if (nvram_getenv("st_rev", buf, sizeof(buf)) >= 0)
417 strev = simple_strtoul(buf, NULL, 0);
418
419 if ((boardnum == 8 || boardnum == 01)
420 && boardtype == 0x0472 && cardbus == 1) {
421 /* Netgear WNR834B, Netgear WNR834Bv2 */
422 return ROUTER_NETGEAR_WNR834B;
423 }
424
425 if (boardnum == 01 && boardtype == 0x0472 && boardrev == 0x23) {
426 /* Netgear WNDR-3300 */
427 return ROUTER_NETGEAR_WNDR3300;
428 }
429
430 if ((boardnum == 83258 || boardnum == 01)
431 && boardtype == 0x048e
432 && (boardrev == 0x11 || boardrev == 0x10)
433 && boardflags == 0x750
434 && sdram_init == 0x000A) {
435 /* Netgear WGR614v8/L/WW 16MB ram, cfe v1.3 or v1.5 */
436 return ROUTER_NETGEAR_WGR614L;
437 }
438
439 if ((boardnum == 1 || boardnum == 3500)
440 && boardtype == 0x04CF
441 && (boardrev == 0x1213 || boardrev == 02)) {
442 /* Netgear WNR3500v2/U/L */
443 return ROUTER_NETGEAR_WNR3500L;
444 }
445
446 if (boardtype == 0x042f
447 && boardrev == 0x10
448 && boardflags == 0
449 && strev == 0x11) {
450 /* Simpletech Simpleshare */
451 return ROUTER_SIMPLETECH_SIMPLESHARE;
452 }
453
454 return 0;
455 }
456
457 struct mtd_partition * __init
458 init_mtd_partitions(struct mtd_info *mtd, size_t size)
459 {
460 int cfe_size;
461 int dual_image_offset = 0;
462 /* e.g Netgear 0x003e0000-0x003f0000 : "board_data", we exclude this
463 * part from our mapping to prevent overwriting len/checksum on e.g.
464 * Netgear WGR614v8/L/WW
465 */
466 int custom_data_size = 0;
467
468 if ((cfe_size = find_cfe_size(mtd,size)) < 0)
469 return NULL;
470
471 /* boot loader */
472 bcm47xx_parts[0].offset = 0;
473 bcm47xx_parts[0].size = cfe_size;
474
475 /* nvram */
476 if (cfe_size != 384 * 1024) {
477
478 switch (get_router()) {
479 case ROUTER_NETGEAR_WGR614L:
480 case ROUTER_NETGEAR_WNR834B:
481 case ROUTER_NETGEAR_WNDR3300:
482 case ROUTER_NETGEAR_WNR3500L:
483 /* Netgear: checksum is @ 0x003AFFF8 for 4M flash or checksum
484 * is @ 0x007AFFF8 for 8M flash
485 */
486 custom_data_size = mtd->erasesize;
487
488 bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
489 bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
490
491 /* Place CFE board_data into a partition */
492 bcm47xx_parts[4].name = "board_data";
493 bcm47xx_parts[4].offset = bcm47xx_parts[3].offset - custom_data_size;
494 bcm47xx_parts[4].size = custom_data_size;
495 break;
496
497 case ROUTER_SIMPLETECH_SIMPLESHARE:
498 /* Fixup Simpletech Simple share nvram */
499
500 printk("Setting up simpletech nvram\n");
501 custom_data_size = mtd->erasesize;
502
503 bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize) * 2;
504 bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
505
506 /* Place backup nvram into a partition */
507 bcm47xx_parts[4].name = "nvram_copy";
508 bcm47xx_parts[4].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
509 bcm47xx_parts[4].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
510 break;
511
512 default:
513 bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
514 bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
515 }
516
517 } else {
518 /* nvram (old 128kb config partition on netgear wgt634u) */
519 bcm47xx_parts[3].offset = bcm47xx_parts[0].size;
520 bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
521 }
522
523 /* dual image offset*/
524 printk("Looking for dual image\n");
525 dual_image_offset=find_dual_image_off(mtd,size);
526 /* linux (kernel and rootfs) */
527 if (cfe_size != 384 * 1024) {
528 if (get_router() == ROUTER_SIMPLETECH_SIMPLESHARE) {
529 bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
530 bcm47xx_parts[1].size = bcm47xx_parts[4].offset - dual_image_offset -
531 bcm47xx_parts[1].offset - custom_data_size;
532 } else {
533 bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
534 bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset -
535 bcm47xx_parts[1].offset - custom_data_size;
536 }
537 } else {
538 /* do not count the elf loader, which is on one block */
539 bcm47xx_parts[1].offset = bcm47xx_parts[0].size +
540 bcm47xx_parts[3].size + mtd->erasesize;
541 bcm47xx_parts[1].size = size -
542 bcm47xx_parts[0].size -
543 (2*bcm47xx_parts[3].size) -
544 mtd->erasesize - custom_data_size;
545 }
546
547 /* find and size rootfs */
548 find_root(mtd,size,&bcm47xx_parts[2]);
549 bcm47xx_parts[2].size = size - dual_image_offset -
550 bcm47xx_parts[2].offset -
551 bcm47xx_parts[3].size - custom_data_size;
552
553 return bcm47xx_parts;
554 }
555 #endif
556
557 int __init init_bcm47xx_map(void)
558 {
559 #ifdef CONFIG_SSB
560 struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
561 #endif
562 size_t size;
563 int ret = 0;
564 #ifdef CONFIG_MTD_PARTITIONS
565 struct mtd_partition *parts;
566 int i;
567 #endif
568
569 #ifdef CONFIG_SSB
570 u32 window = mcore->flash_window;
571 u32 window_size = mcore->flash_window_size;
572
573 printk("flash init: 0x%08x 0x%08x\n", window, window_size);
574 bcm47xx_map.phys = window;
575 bcm47xx_map.size = window_size;
576 bcm47xx_map.bankwidth = mcore->flash_buswidth;
577 bcm47xx_map.virt = ioremap_nocache(window, window_size);
578 #else
579 printk("flash init: 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE);
580 bcm47xx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
581 #endif
582
583 if (!bcm47xx_map.virt) {
584 printk("Failed to ioremap\n");
585 return -EIO;
586 }
587
588 simple_map_init(&bcm47xx_map);
589
590 if (!(bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map))) {
591 printk("Failed to do_map_probe\n");
592 iounmap((void *)bcm47xx_map.virt);
593 return -ENXIO;
594 }
595
596 /* override copy_from routine */
597 bcm47xx_map.copy_from = bcm47xx_map_copy_from;
598
599 bcm47xx_mtd->owner = THIS_MODULE;
600
601 size = bcm47xx_mtd->size;
602
603 printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR);
604
605 #ifdef CONFIG_MTD_PARTITIONS
606 parts = init_mtd_partitions(bcm47xx_mtd, size);
607 for (i = 0; parts[i].name; i++);
608 ret = add_mtd_partitions(bcm47xx_mtd, parts, i);
609 if (ret) {
610 printk(KERN_ERR "Flash: add_mtd_partitions failed\n");
611 goto fail;
612 }
613 #endif
614 return 0;
615
616 fail:
617 if (bcm47xx_mtd)
618 map_destroy(bcm47xx_mtd);
619 if (bcm47xx_map.virt)
620 iounmap((void *)bcm47xx_map.virt);
621 bcm47xx_map.virt = 0;
622 return ret;
623 }
624
625 void __exit cleanup_bcm47xx_map(void)
626 {
627 #ifdef CONFIG_MTD_PARTITIONS
628 del_mtd_partitions(bcm47xx_mtd);
629 #endif
630 map_destroy(bcm47xx_mtd);
631 iounmap((void *)bcm47xx_map.virt);
632 }
633
634 module_init(init_bcm47xx_map);
635 module_exit(cleanup_bcm47xx_map);
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