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1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * flash.c - flash support for the 512k, 8bit boot flash on the GEVB | |
26 | * most of this file was based on the existing U-Boot | |
27 | * flash drivers. | |
28 | */ | |
29 | ||
30 | #include <common.h> | |
31 | #include <mpc8xx.h> | |
32 | #include <galileo/gt64260R.h> | |
33 | #include <galileo/memory.h> | |
34 | #include "intel_flash.h" | |
35 | ||
36 | #define FLASH_ROM 0xFFFD /* unknown flash type */ | |
37 | #define FLASH_RAM 0xFFFE /* unknown flash type */ | |
38 | #define FLASH_MAN_UNKNOWN 0xFFFF0000 | |
39 | ||
40 | /* #define DEBUG */ | |
41 | /* #define FLASH_ID_OVERRIDE */ /* Hack to set type to 040B if ROM emulator is installed. | |
42 | * Can be used to program a ROM in circuit if a programmer | |
43 | * is not available by swapping the rom out. */ | |
44 | ||
45 | /* Intel flash commands */ | |
46 | int flash_erase_intel(flash_info_t *info, int s_first, int s_last); | |
47 | int write_word_intel(bank_addr_t addr, bank_word_t value); | |
48 | ||
49 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ | |
50 | ||
51 | /*----------------------------------------------------------------------- | |
52 | * Functions | |
53 | */ | |
54 | static ulong flash_get_size (int portwidth, vu_long *addr, flash_info_t *info); | |
55 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
56 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
57 | ||
58 | /*----------------------------------------------------------------------- | |
59 | */ | |
60 | ||
61 | unsigned long | |
62 | flash_init (void) | |
63 | { | |
64 | unsigned int i; | |
65 | unsigned long size_b0 = 0, size_b1 = 0; | |
66 | unsigned long base, flash_size; | |
67 | ||
68 | /* Init: no FLASHes known */ | |
69 | for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { | |
70 | flash_info[i].flash_id = FLASH_UNKNOWN; | |
71 | } | |
72 | ||
73 | /* the boot flash */ | |
74 | base = CFG_FLASH_BASE; | |
75 | size_b0 = flash_get_size(1, (vu_long *)base, &flash_info[0]); | |
76 | ||
77 | printf("[%ldkB@%lx] ", size_b0/1024, base); | |
78 | ||
79 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
80 | printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", | |
81 | base, size_b0, size_b0<<20); | |
82 | } | |
83 | ||
84 | base = memoryGetDeviceBaseAddress(CFG_EXTRA_FLASH_DEVICE); | |
85 | for(i=1;i<CFG_MAX_FLASH_BANKS;i++) { | |
86 | unsigned long size = flash_get_size(CFG_EXTRA_FLASH_WIDTH, (vu_long *)base, &flash_info[i]); | |
87 | ||
88 | printf("[%ldMB@%lx] ", size>>20, base); | |
89 | ||
90 | if (flash_info[i].flash_id == FLASH_UNKNOWN) { | |
91 | if(i==1) { | |
92 | printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", | |
93 | base, size_b1, size_b1<<20); | |
94 | } | |
95 | break; | |
96 | } | |
97 | size_b1+=size; | |
98 | base+=size; | |
99 | } | |
100 | ||
101 | flash_size = size_b0 + size_b1; | |
102 | return flash_size; | |
103 | } | |
104 | ||
105 | /*----------------------------------------------------------------------- | |
106 | */ | |
107 | static void | |
108 | flash_get_offsets (ulong base, flash_info_t *info) | |
109 | { | |
110 | int i; | |
111 | int sector_size; | |
112 | ||
113 | if(!info->sector_count) return; | |
114 | ||
115 | /* set up sector start address table */ | |
116 | switch(info->flash_id & FLASH_TYPEMASK) { | |
117 | case FLASH_AM040: | |
118 | case FLASH_28F128J3A: | |
119 | case FLASH_28F640J3A: | |
120 | case FLASH_RAM: | |
121 | /* this chip has uniformly spaced sectors */ | |
122 | sector_size=info->size/info->sector_count; | |
123 | for (i = 0; i < info->sector_count; i++) | |
124 | info->start[i] = base + (i * sector_size); | |
125 | break; | |
126 | default: | |
127 | if (info->flash_id & FLASH_BTYPE) { | |
128 | /* set sector offsets for bottom boot block type */ | |
129 | info->start[0] = base + 0x00000000; | |
130 | info->start[1] = base + 0x00008000; | |
131 | info->start[2] = base + 0x0000C000; | |
132 | info->start[3] = base + 0x00010000; | |
133 | for (i = 4; i < info->sector_count; i++) { | |
134 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
135 | } | |
136 | } else { | |
137 | /* set sector offsets for top boot block type */ | |
138 | i = info->sector_count - 1; | |
139 | info->start[i--] = base + info->size - 0x00008000; | |
140 | info->start[i--] = base + info->size - 0x0000C000; | |
141 | info->start[i--] = base + info->size - 0x00010000; | |
142 | for (; i >= 0; i--) { | |
143 | info->start[i] = base + i * 0x00020000; | |
144 | } | |
145 | } | |
146 | } | |
147 | } | |
148 | ||
149 | /*----------------------------------------------------------------------- | |
150 | */ | |
151 | void | |
152 | flash_print_info (flash_info_t *info) | |
153 | { | |
154 | int i; | |
155 | ||
156 | if (info->flash_id == FLASH_UNKNOWN) { | |
157 | printf ("missing or unknown FLASH type\n"); | |
158 | return; | |
159 | } | |
160 | ||
161 | switch (info->flash_id & FLASH_VENDMASK) { | |
162 | case FLASH_MAN_AMD: printf ("AMD "); break; | |
163 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; | |
164 | case FLASH_MAN_INTEL: printf ("INTEL "); break; | |
165 | default: printf ("Unknown Vendor "); break; | |
166 | } | |
167 | ||
168 | switch (info->flash_id & FLASH_TYPEMASK) { | |
169 | case FLASH_AM040: | |
170 | printf ("AM29LV040B (4 Mbit, bottom boot sect)\n"); | |
171 | break; | |
172 | case FLASH_AM400B: | |
173 | printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
174 | break; | |
175 | case FLASH_AM400T: | |
176 | printf ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
177 | break; | |
178 | case FLASH_AM800B: | |
179 | printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
180 | break; | |
181 | case FLASH_AM800T: | |
182 | printf ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
183 | break; | |
184 | case FLASH_AM160B: | |
185 | printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
186 | break; | |
187 | case FLASH_AM160T: | |
188 | printf ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
189 | break; | |
190 | case FLASH_AM320B: | |
191 | printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
192 | break; | |
193 | case FLASH_AM320T: | |
194 | printf ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
195 | break; | |
196 | case FLASH_28F640J3A: | |
197 | printf ("28F640J3A (64 Mbit)\n"); | |
198 | break; | |
199 | case FLASH_28F128J3A: | |
200 | printf ("28F128J3A (128 Mbit)\n"); | |
201 | break; | |
202 | case FLASH_ROM: | |
203 | printf ("ROM\n"); | |
204 | break; | |
205 | case FLASH_RAM: | |
206 | printf ("RAM\n"); | |
207 | break; | |
208 | default: | |
209 | printf ("Unknown Chip Type\n"); | |
210 | break; | |
211 | } | |
212 | ||
213 | puts (" Size: "); | |
214 | print_size (info->size, ""); | |
215 | printf (" in %d Sectors\n", info->sector_count); | |
216 | ||
217 | printf (" Sector Start Addresses:"); | |
218 | for (i=0; i<info->sector_count; ++i) { | |
219 | if ((i % 5) == 0) | |
220 | printf ("\n "); | |
221 | printf (" %08lX%s", | |
222 | info->start[i], | |
223 | info->protect[i] ? " (RO)" : " " | |
224 | ); | |
225 | } | |
226 | printf ("\n"); | |
227 | return; | |
228 | } | |
229 | ||
230 | /*----------------------------------------------------------------------- | |
231 | */ | |
232 | ||
233 | ||
234 | /*----------------------------------------------------------------------- | |
235 | */ | |
236 | ||
237 | /* | |
238 | * The following code cannot be run from FLASH! | |
239 | */ | |
240 | ||
241 | static inline void flash_cmd(int width, volatile unsigned char *addr, int offset, unsigned char cmd) | |
242 | { | |
243 | /* supports 1x8, 1x16, and 2x16 */ | |
244 | /* 2x8 and 4x8 are not supported */ | |
245 | if(width==4) { | |
246 | /* assuming chips are in 16 bit mode */ | |
247 | /* 2x16 */ | |
248 | unsigned long cmd32=(cmd<<16)|cmd; | |
249 | *(volatile unsigned long *)(addr+offset*2)=cmd32; | |
250 | } else { | |
251 | /* 1x16 or 1x8 */ | |
252 | *(volatile unsigned char *)(addr+offset)=cmd; | |
253 | } | |
254 | } | |
255 | ||
256 | static ulong | |
257 | flash_get_size (int portwidth, vu_long *addr, flash_info_t *info) | |
258 | { | |
259 | short i; | |
260 | volatile unsigned char *caddr = (unsigned char *)addr; | |
261 | volatile unsigned short *saddr = (unsigned short *)addr; | |
262 | volatile unsigned long *laddr = (unsigned long *)addr; | |
263 | char old[2], save; | |
264 | ulong id, manu, base = (ulong)addr; | |
265 | ||
266 | info->portwidth=portwidth; | |
267 | ||
268 | save = *caddr; | |
269 | ||
270 | flash_cmd(portwidth,caddr,0,0xf0); | |
271 | flash_cmd(portwidth,caddr,0,0xf0); | |
272 | ||
273 | udelay(10); | |
274 | ||
275 | old[0] = caddr[0]; | |
276 | old[1] = caddr[1]; | |
277 | ||
278 | ||
279 | if(old[0]!=0xf0) { | |
280 | flash_cmd(portwidth,caddr,0,0xf0); | |
281 | flash_cmd(portwidth,caddr,0,0xf0); | |
282 | ||
283 | udelay(10); | |
284 | ||
285 | if(*caddr==0xf0) { | |
286 | /* this area is ROM */ | |
287 | *caddr=save; | |
288 | #ifndef FLASH_ID_OVERRIDE | |
289 | info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN; | |
290 | info->sector_count = 8; | |
291 | info->size = 0x80000; | |
292 | #else | |
293 | info->flash_id = FLASH_MAN_AMD + FLASH_AM040; | |
294 | info->sector_count = 8; | |
295 | info->size = 0x80000; | |
296 | info->chipwidth=1; | |
297 | #endif | |
298 | flash_get_offsets(base, info); | |
299 | return info->size; | |
300 | } | |
301 | } else { | |
302 | *caddr=0; | |
303 | ||
304 | udelay(10); | |
305 | ||
306 | if(*caddr==0) { | |
307 | /* this area is RAM */ | |
308 | *caddr=save; | |
309 | info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN; | |
310 | info->sector_count = 8; | |
311 | info->size = 0x80000; | |
312 | flash_get_offsets(base, info); | |
313 | return info->size; | |
314 | } | |
315 | flash_cmd(portwidth,caddr,0,0xf0); | |
316 | ||
317 | udelay(10); | |
318 | } | |
319 | ||
320 | /* Write auto select command: read Manufacturer ID */ | |
321 | flash_cmd(portwidth,caddr,0x555,0xAA); | |
322 | flash_cmd(portwidth,caddr,0x2AA,0x55); | |
323 | flash_cmd(portwidth,caddr,0x555,0x90); | |
324 | ||
325 | udelay(10); | |
326 | ||
327 | if ((caddr[0] == old[0]) && | |
328 | (caddr[1] == old[1])) { | |
329 | ||
330 | /* this area is ROM */ | |
331 | #ifndef FLASH_ID_OVERRIDE | |
332 | info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN; | |
333 | info->sector_count = 8; | |
334 | info->size = 0x80000; | |
335 | #else | |
336 | info->flash_id = FLASH_MAN_AMD + FLASH_AM040; | |
337 | info->sector_count = 8; | |
338 | info->size = 0x80000; | |
339 | info->chipwidth=1; | |
340 | #endif | |
341 | flash_get_offsets(base, info); | |
342 | return info->size; | |
343 | #ifdef DEBUG | |
344 | } else { | |
345 | printf("%px%d: %02x:%02x -> %02x:%02x\n", | |
346 | caddr, portwidth, old[0], old[1], | |
347 | caddr[0], caddr[1]); | |
348 | #endif | |
349 | } | |
350 | ||
351 | switch(portwidth) { | |
352 | case 1: | |
353 | manu = caddr[0]; | |
354 | manu |= manu<<16; | |
355 | id = caddr[1]; | |
356 | break; | |
357 | case 2: | |
358 | manu = saddr[0]; | |
359 | manu |= manu<<16; | |
360 | id = saddr[1]; | |
361 | id |= id<<16; | |
362 | break; | |
363 | case 4: | |
364 | manu = laddr[0]; | |
365 | id = laddr[1]; | |
366 | break; | |
367 | default: | |
368 | id = manu = -1; | |
369 | break; | |
370 | } | |
371 | ||
372 | #ifdef DEBUG | |
373 | printf("\n%08lx:%08lx:%08lx\n", base, manu, id); | |
374 | printf("%08lx %08lx %08lx %08lx\n", | |
375 | laddr[0],laddr[1],laddr[2],laddr[3]); | |
376 | #endif | |
377 | ||
378 | switch (manu) { | |
379 | case AMD_MANUFACT: | |
380 | info->flash_id = FLASH_MAN_AMD; | |
381 | break; | |
382 | case FUJ_MANUFACT: | |
383 | info->flash_id = FLASH_MAN_FUJ; | |
384 | break; | |
385 | case INTEL_MANUFACT: | |
386 | info->flash_id = FLASH_MAN_INTEL; | |
387 | break; | |
388 | default: | |
389 | printf("Unknown Mfr [%08lx]:%08lx\n", manu, id); | |
390 | info->flash_id = FLASH_UNKNOWN; | |
391 | info->sector_count = 0; | |
392 | info->size = 0; | |
393 | return (0); /* no or unknown flash */ | |
394 | } | |
395 | ||
396 | switch (id) { | |
397 | case AMD_ID_LV400T: | |
398 | info->flash_id += FLASH_AM400T; | |
399 | info->sector_count = 11; | |
400 | info->size = 0x00100000; | |
401 | info->chipwidth=1; | |
402 | break; /* => 1 MB */ | |
403 | ||
404 | case AMD_ID_LV400B: | |
405 | info->flash_id += FLASH_AM400B; | |
406 | info->sector_count = 11; | |
407 | info->size = 0x00100000; | |
408 | info->chipwidth=1; | |
409 | break; /* => 1 MB */ | |
410 | ||
411 | case AMD_ID_LV800T: | |
412 | info->flash_id += FLASH_AM800T; | |
413 | info->sector_count = 19; | |
414 | info->size = 0x00200000; | |
415 | info->chipwidth=1; | |
416 | break; /* => 2 MB */ | |
417 | ||
418 | case AMD_ID_LV800B: | |
419 | info->flash_id += FLASH_AM800B; | |
420 | info->sector_count = 19; | |
421 | info->size = 0x00200000; | |
422 | info->chipwidth=1; | |
423 | break; /* => 2 MB */ | |
424 | ||
425 | case AMD_ID_LV160T: | |
426 | info->flash_id += FLASH_AM160T; | |
427 | info->sector_count = 35; | |
428 | info->size = 0x00400000; | |
429 | info->chipwidth=1; | |
430 | break; /* => 4 MB */ | |
431 | ||
432 | case AMD_ID_LV160B: | |
433 | info->flash_id += FLASH_AM160B; | |
434 | info->sector_count = 35; | |
435 | info->size = 0x00400000; | |
436 | info->chipwidth=1; | |
437 | break; /* => 4 MB */ | |
438 | #if 0 /* enable when device IDs are available */ | |
439 | case AMD_ID_LV320T: | |
440 | info->flash_id += FLASH_AM320T; | |
441 | info->sector_count = 67; | |
442 | info->size = 0x00800000; | |
443 | break; /* => 8 MB */ | |
444 | ||
445 | case AMD_ID_LV320B: | |
446 | info->flash_id += FLASH_AM320B; | |
447 | info->sector_count = 67; | |
448 | info->size = 0x00800000; | |
449 | break; /* => 8 MB */ | |
450 | #endif | |
451 | case AMD_ID_LV040B: | |
452 | info->flash_id += FLASH_AM040; | |
453 | info->sector_count = 8; | |
454 | info->size = 0x80000; | |
455 | info->chipwidth=1; | |
456 | break; | |
457 | ||
458 | case INTEL_ID_28F640J3A: | |
459 | info->flash_id += FLASH_28F640J3A; | |
460 | info->sector_count = 64; | |
461 | info->size = 128*1024 * 64; /* 128kbytes x 64 blocks */ | |
462 | info->chipwidth=2; | |
463 | if(portwidth==4) info->size*=2; /* 2x16 */ | |
464 | break; | |
465 | ||
466 | case INTEL_ID_28F128J3A: | |
467 | info->flash_id += FLASH_28F128J3A; | |
468 | info->sector_count = 128; | |
469 | info->size = 128*1024 * 128; /* 128kbytes x 128 blocks */ | |
470 | info->chipwidth=2; | |
471 | if(portwidth==4) info->size*=2; /* 2x16 */ | |
472 | break; | |
473 | ||
474 | default: | |
475 | printf("Unknown id %lx:[%lx]\n", manu, id); | |
476 | info->flash_id = FLASH_UNKNOWN; | |
477 | info->chipwidth=1; | |
478 | return (0); /* => no or unknown flash */ | |
479 | ||
480 | } | |
481 | ||
482 | flash_get_offsets(base, info); | |
483 | ||
484 | #if 0 | |
485 | /* set up sector start address table */ | |
486 | if (info->flash_id & FLASH_AM040) { | |
487 | /* this chip has uniformly spaced sectors */ | |
488 | for (i = 0; i < info->sector_count; i++) | |
489 | info->start[i] = base + (i * 0x00010000); | |
490 | ||
491 | } else if (info->flash_id & FLASH_BTYPE) { | |
492 | /* set sector offsets for bottom boot block type */ | |
493 | info->start[0] = base + 0x00000000; | |
494 | info->start[1] = base + 0x00008000; | |
495 | info->start[2] = base + 0x0000C000; | |
496 | info->start[3] = base + 0x00010000; | |
497 | for (i = 4; i < info->sector_count; i++) { | |
498 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
499 | } | |
500 | } else { | |
501 | /* set sector offsets for top boot block type */ | |
502 | i = info->sector_count - 1; | |
503 | info->start[i--] = base + info->size - 0x00008000; | |
504 | info->start[i--] = base + info->size - 0x0000C000; | |
505 | info->start[i--] = base + info->size - 0x00010000; | |
506 | for (; i >= 0; i--) { | |
507 | info->start[i] = base + i * 0x00020000; | |
508 | } | |
509 | } | |
510 | #endif | |
511 | ||
512 | /* check for protected sectors */ | |
513 | for (i = 0; i < info->sector_count; i++) { | |
514 | /* read sector protection at sector address, (A7 .. A0)=0x02 */ | |
515 | /* D0 = 1 if protected */ | |
516 | caddr = (volatile unsigned char *)(info->start[i]); | |
517 | saddr = (volatile unsigned short *)(info->start[i]); | |
518 | laddr = (volatile unsigned long *)(info->start[i]); | |
519 | if(portwidth==1) | |
520 | info->protect[i] = caddr[2] & 1; | |
521 | else if(portwidth==2) | |
522 | info->protect[i] = saddr[2] & 1; | |
523 | else | |
524 | info->protect[i] = laddr[2] & 1; | |
525 | } | |
526 | ||
527 | /* | |
528 | * Prevent writes to uninitialized FLASH. | |
529 | */ | |
530 | if (info->flash_id != FLASH_UNKNOWN) { | |
531 | caddr = (volatile unsigned char *)info->start[0]; | |
532 | ||
533 | flash_cmd(portwidth,caddr,0,0xF0); /* reset bank */ | |
534 | } | |
535 | ||
536 | return (info->size); | |
537 | } | |
538 | ||
539 | /* TODO: 2x16 unsupported */ | |
540 | int | |
541 | flash_erase (flash_info_t *info, int s_first, int s_last) | |
542 | { | |
543 | volatile unsigned char *addr = (char *)(info->start[0]); | |
544 | int flag, prot, sect, l_sect; | |
545 | ulong start, now, last; | |
546 | ||
547 | /* TODO: 2x16 unsupported */ | |
548 | if(info->portwidth==4) return 1; | |
549 | ||
550 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1; | |
551 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { | |
552 | for (sect = s_first; sect<=s_last; sect++) { | |
553 | int sector_size=info->size/info->sector_count; | |
554 | addr = (char *)(info->start[sect]); | |
555 | memset((void *)addr, 0, sector_size); | |
556 | } | |
557 | return 0; | |
558 | } | |
559 | ||
560 | if ((s_first < 0) || (s_first > s_last)) { | |
561 | if (info->flash_id == FLASH_UNKNOWN) { | |
562 | printf ("- missing\n"); | |
563 | } else { | |
564 | printf ("- no sectors to erase\n"); | |
565 | } | |
566 | return 1; | |
567 | } | |
568 | ||
569 | if ((info->flash_id&FLASH_VENDMASK) == FLASH_MAN_INTEL) { | |
570 | return flash_erase_intel(info, | |
571 | (unsigned short)s_first, | |
572 | (unsigned short)s_last); | |
573 | } | |
574 | ||
575 | #if 0 | |
576 | if ((info->flash_id == FLASH_UNKNOWN) || | |
577 | (info->flash_id > FLASH_AMD_COMP)) { | |
578 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
579 | info->flash_id); | |
580 | return 1; | |
581 | } | |
582 | #endif | |
583 | ||
584 | prot = 0; | |
585 | for (sect=s_first; sect<=s_last; ++sect) { | |
586 | if (info->protect[sect]) { | |
587 | prot++; | |
588 | } | |
589 | } | |
590 | ||
591 | if (prot) { | |
592 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
593 | prot); | |
594 | } else { | |
595 | printf ("\n"); | |
596 | } | |
597 | ||
598 | l_sect = -1; | |
599 | ||
600 | /* Disable interrupts which might cause a timeout here */ | |
601 | flag = disable_interrupts(); | |
602 | ||
603 | flash_cmd(info->portwidth,addr,0x555,0xAA); | |
604 | flash_cmd(info->portwidth,addr,0x2AA,0x55); | |
605 | flash_cmd(info->portwidth,addr,0x555,0x80); | |
606 | flash_cmd(info->portwidth,addr,0x555,0xAA); | |
607 | flash_cmd(info->portwidth,addr,0x2AA,0x55); | |
608 | ||
609 | /* Start erase on unprotected sectors */ | |
610 | for (sect = s_first; sect<=s_last; sect++) { | |
611 | if (info->protect[sect] == 0) { /* not protected */ | |
612 | addr = (char *)(info->start[sect]); | |
613 | flash_cmd(info->portwidth,addr,0,0x30); | |
614 | l_sect = sect; | |
615 | } | |
616 | } | |
617 | ||
618 | /* re-enable interrupts if necessary */ | |
619 | if (flag) | |
620 | enable_interrupts(); | |
621 | ||
622 | /* wait at least 80us - let's wait 1 ms */ | |
623 | udelay (1000); | |
624 | ||
625 | /* | |
626 | * We wait for the last triggered sector | |
627 | */ | |
628 | if (l_sect < 0) | |
629 | goto DONE; | |
630 | ||
631 | start = get_timer (0); | |
632 | last = start; | |
633 | addr = (volatile unsigned char *)(info->start[l_sect]); | |
634 | /* broken for 2x16: TODO */ | |
635 | while ((addr[0] & 0x80) != 0x80) { | |
636 | if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { | |
637 | printf ("Timeout\n"); | |
638 | return 1; | |
639 | } | |
640 | /* show that we're waiting */ | |
641 | if ((now - last) > 1000) { /* every second */ | |
642 | putc ('.'); | |
643 | last = now; | |
644 | } | |
645 | } | |
646 | ||
647 | DONE: | |
648 | /* reset to read mode */ | |
649 | addr = (volatile unsigned char *)info->start[0]; | |
650 | flash_cmd(info->portwidth,addr,0,0xf0); | |
651 | flash_cmd(info->portwidth,addr,0,0xf0); | |
652 | ||
653 | printf (" done\n"); | |
654 | return 0; | |
655 | } | |
656 | ||
657 | /*----------------------------------------------------------------------- | |
658 | * Copy memory to flash, returns: | |
659 | * 0 - OK | |
660 | * 1 - write timeout | |
661 | * 2 - Flash not erased | |
662 | */ | |
663 | ||
664 | /* broken for 2x16: TODO */ | |
665 | int | |
666 | write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
667 | { | |
668 | ulong cp, wp, data; | |
669 | int i, l, rc; | |
670 | ||
671 | if(info->portwidth==4) return 1; | |
672 | ||
673 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 0; | |
674 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { | |
675 | memcpy((void *)addr, src, cnt); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | wp = (addr & ~3); /* get lower word aligned address */ | |
680 | ||
681 | /* | |
682 | * handle unaligned start bytes | |
683 | */ | |
684 | if ((l = addr - wp) != 0) { | |
685 | data = 0; | |
686 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
687 | data = (data << 8) | (*(uchar *)cp); | |
688 | } | |
689 | for (; i<4 && cnt>0; ++i) { | |
690 | data = (data << 8) | *src++; | |
691 | --cnt; | |
692 | ++cp; | |
693 | } | |
694 | for (; cnt==0 && i<4; ++i, ++cp) { | |
695 | data = (data << 8) | (*(uchar *)cp); | |
696 | } | |
697 | ||
698 | if ((rc = write_word(info, wp, data)) != 0) { | |
699 | return (rc); | |
700 | } | |
701 | wp += 4; | |
702 | } | |
703 | ||
704 | /* | |
705 | * handle word aligned part | |
706 | */ | |
707 | while (cnt >= 4) { | |
708 | data = 0; | |
709 | for (i=0; i<4; ++i) { | |
710 | data = (data << 8) | *src++; | |
711 | } | |
712 | if ((rc = write_word(info, wp, data)) != 0) { | |
713 | return (rc); | |
714 | } | |
715 | wp += 4; | |
716 | cnt -= 4; | |
717 | } | |
718 | ||
719 | if (cnt == 0) { | |
720 | return (0); | |
721 | } | |
722 | ||
723 | /* | |
724 | * handle unaligned tail bytes | |
725 | */ | |
726 | data = 0; | |
727 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
728 | data = (data << 8) | *src++; | |
729 | --cnt; | |
730 | } | |
731 | for (; i<4; ++i, ++cp) { | |
732 | data = (data << 8) | (*(uchar *)cp); | |
733 | } | |
734 | ||
735 | return (write_word(info, wp, data)); | |
736 | } | |
737 | ||
738 | /*----------------------------------------------------------------------- | |
739 | * Write a word to Flash, returns: | |
740 | * 0 - OK | |
741 | * 1 - write timeout | |
742 | * 2 - Flash not erased | |
743 | */ | |
744 | /* broken for 2x16: TODO */ | |
745 | static int | |
746 | write_word (flash_info_t *info, ulong dest, ulong data) | |
747 | { | |
748 | volatile unsigned char *addr = (char *)(info->start[0]); | |
749 | ulong start; | |
750 | int flag, i; | |
751 | ||
752 | if(info->portwidth==4) return 1; | |
753 | ||
754 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1; | |
755 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { | |
756 | *(unsigned long *)dest=data; | |
757 | return 0; | |
758 | } | |
759 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { | |
760 | unsigned short low = data & 0xffff; | |
761 | unsigned short hi = (data >> 16) & 0xffff; | |
762 | int ret = write_word_intel((bank_addr_t)dest, hi); | |
763 | ||
764 | if (!ret) ret = write_word_intel((bank_addr_t)(dest+2), low); | |
765 | ||
766 | return ret; | |
767 | } | |
768 | ||
769 | /* Check if Flash is (sufficiently) erased */ | |
770 | if ((*((vu_long *)dest) & data) != data) { | |
771 | return (2); | |
772 | } | |
773 | /* Disable interrupts which might cause a timeout here */ | |
774 | flag = disable_interrupts(); | |
775 | ||
776 | /* first, perform an unlock bypass command to speed up flash writes */ | |
777 | addr[0x555] = 0xAA; | |
778 | addr[0x2AA] = 0x55; | |
779 | addr[0x555] = 0x20; | |
780 | ||
781 | /* write each byte out */ | |
782 | for (i = 0; i < 4; i++) { | |
783 | char *data_ch = (char *)&data; | |
784 | addr[0] = 0xA0; | |
785 | *(((char *)dest)+i) = data_ch[i]; | |
786 | udelay(10); /* XXX */ | |
787 | } | |
788 | ||
789 | /* we're done, now do an unlock bypass reset */ | |
790 | addr[0] = 0x90; | |
791 | addr[0] = 0x00; | |
792 | ||
793 | /* re-enable interrupts if necessary */ | |
794 | if (flag) | |
795 | enable_interrupts(); | |
796 | ||
797 | /* data polling for D7 */ | |
798 | start = get_timer (0); | |
799 | while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { | |
800 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { | |
801 | return (1); | |
802 | } | |
803 | } | |
804 | return (0); | |
805 | } |