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04a85b3b WD |
1 | /* |
2 | * (C) Copyright 2000-2004 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
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 | #include <common.h> | |
25 | #include <mpc8xx.h> | |
26 | ||
6d0f6bcf | 27 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
04a85b3b WD |
28 | |
29 | /*----------------------------------------------------------------------- | |
30 | * Functions | |
31 | */ | |
32 | static ulong flash_get_size(vu_long * addr, flash_info_t * info); | |
33 | static int write_byte(flash_info_t * info, ulong dest, uchar data); | |
34 | static void flash_get_offsets(ulong base, flash_info_t * info); | |
35 | ||
36 | /*----------------------------------------------------------------------- | |
37 | */ | |
38 | ||
39 | unsigned long flash_init(void) | |
40 | { | |
6d0f6bcf | 41 | volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; |
04a85b3b WD |
42 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
43 | unsigned long size; | |
c26e454d WD |
44 | #if CONFIG_NETPHONE_VERSION == 2 |
45 | unsigned long size1; | |
46 | #endif | |
04a85b3b WD |
47 | int i; |
48 | ||
49 | /* Init: no FLASHes known */ | |
6d0f6bcf | 50 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) |
04a85b3b WD |
51 | flash_info[i].flash_id = FLASH_UNKNOWN; |
52 | ||
53 | size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); | |
54 | ||
55 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
56 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
57 | size, size << 20); | |
58 | } | |
59 | ||
60 | /* Remap FLASH according to real size */ | |
6d0f6bcf JCPV |
61 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
62 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK)); | |
04a85b3b WD |
63 | |
64 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 65 | size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
04a85b3b | 66 | |
6d0f6bcf | 67 | flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
04a85b3b WD |
68 | |
69 | /* monitor protection ON by default */ | |
70 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 71 | CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, |
04a85b3b WD |
72 | &flash_info[0]); |
73 | ||
74 | flash_protect ( FLAG_PROTECT_SET, | |
0e8d1586 JCPV |
75 | CONFIG_ENV_ADDR, |
76 | CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, | |
04a85b3b WD |
77 | &flash_info[0]); |
78 | ||
0e8d1586 | 79 | #ifdef CONFIG_ENV_ADDR_REDUND |
04a85b3b | 80 | flash_protect ( FLAG_PROTECT_SET, |
0e8d1586 JCPV |
81 | CONFIG_ENV_ADDR_REDUND, |
82 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1, | |
04a85b3b WD |
83 | &flash_info[0]); |
84 | #endif | |
85 | ||
86 | flash_info[0].size = size; | |
87 | ||
c26e454d WD |
88 | #if CONFIG_NETPHONE_VERSION == 2 |
89 | size1 = flash_get_size((vu_long *) FLASH_BASE4_PRELIM, &flash_info[1]); | |
79fa88f3 WD |
90 | if (size1 > 0) { |
91 | if (flash_info[1].flash_id == FLASH_UNKNOWN) | |
92 | printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", size1, size1 << 20); | |
c26e454d | 93 | |
79fa88f3 | 94 | /* Remap FLASH according to real size */ |
6d0f6bcf JCPV |
95 | memctl->memc_or4 = CONFIG_SYS_OR_TIMING_FLASH | (-size1 & 0xFFFF8000); |
96 | memctl->memc_br4 = (CONFIG_SYS_FLASH_BASE4 & BR_BA_MSK) | (memctl->memc_br4 & ~(BR_BA_MSK)); | |
c26e454d | 97 | |
79fa88f3 | 98 | /* Re-do sizing to get full correct info */ |
6d0f6bcf | 99 | size1 = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE4, &flash_info[1]); |
c26e454d | 100 | |
6d0f6bcf | 101 | flash_get_offsets(CONFIG_SYS_FLASH_BASE4, &flash_info[1]); |
c26e454d | 102 | |
79fa88f3 WD |
103 | size += size1; |
104 | } else | |
105 | memctl->memc_br4 &= ~BR_V; | |
c26e454d WD |
106 | #endif |
107 | ||
04a85b3b WD |
108 | return (size); |
109 | } | |
110 | ||
111 | /*----------------------------------------------------------------------- | |
112 | */ | |
113 | static void flash_get_offsets(ulong base, flash_info_t * info) | |
114 | { | |
115 | int i; | |
116 | ||
117 | /* set up sector start address table */ | |
118 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
119 | for (i = 0; i < info->sector_count; i++) { | |
120 | info->start[i] = base + (i * 0x00010000); | |
121 | } | |
122 | } else if (info->flash_id & FLASH_BTYPE) { | |
123 | /* set sector offsets for bottom boot block type */ | |
124 | info->start[0] = base + 0x00000000; | |
125 | info->start[1] = base + 0x00004000; | |
126 | info->start[2] = base + 0x00006000; | |
127 | info->start[3] = base + 0x00008000; | |
128 | for (i = 4; i < info->sector_count; i++) { | |
129 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
130 | } | |
131 | } else { | |
132 | /* set sector offsets for top boot block type */ | |
133 | i = info->sector_count - 1; | |
134 | info->start[i--] = base + info->size - 0x00004000; | |
135 | info->start[i--] = base + info->size - 0x00006000; | |
136 | info->start[i--] = base + info->size - 0x00008000; | |
137 | for (; i >= 0; i--) { | |
138 | info->start[i] = base + i * 0x00010000; | |
139 | } | |
140 | } | |
141 | } | |
142 | ||
143 | /*----------------------------------------------------------------------- | |
144 | */ | |
145 | void flash_print_info(flash_info_t * info) | |
146 | { | |
147 | int i; | |
148 | ||
149 | if (info->flash_id == FLASH_UNKNOWN) { | |
150 | printf("missing or unknown FLASH type\n"); | |
151 | return; | |
152 | } | |
153 | ||
154 | switch (info->flash_id & FLASH_VENDMASK) { | |
155 | case FLASH_MAN_AMD: | |
156 | printf("AMD "); | |
157 | break; | |
158 | case FLASH_MAN_FUJ: | |
159 | printf("FUJITSU "); | |
160 | break; | |
161 | case FLASH_MAN_MX: | |
162 | printf("MXIC "); | |
163 | break; | |
164 | default: | |
165 | printf("Unknown Vendor "); | |
166 | break; | |
167 | } | |
168 | ||
169 | switch (info->flash_id & FLASH_TYPEMASK) { | |
170 | case FLASH_AM040: | |
171 | printf("AM29LV040B (4 Mbit, bottom boot sect)\n"); | |
172 | break; | |
173 | case FLASH_AM400B: | |
174 | printf("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
175 | break; | |
176 | case FLASH_AM400T: | |
177 | printf("AM29LV400T (4 Mbit, top boot sector)\n"); | |
178 | break; | |
179 | case FLASH_AM800B: | |
180 | printf("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
181 | break; | |
182 | case FLASH_AM800T: | |
183 | printf("AM29LV800T (8 Mbit, top boot sector)\n"); | |
184 | break; | |
185 | case FLASH_AM160B: | |
186 | printf("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
187 | break; | |
188 | case FLASH_AM160T: | |
189 | printf("AM29LV160T (16 Mbit, top boot sector)\n"); | |
190 | break; | |
191 | case FLASH_AM320B: | |
192 | printf("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
193 | break; | |
194 | case FLASH_AM320T: | |
195 | printf("AM29LV320T (32 Mbit, top boot sector)\n"); | |
196 | break; | |
197 | default: | |
198 | printf("Unknown Chip Type\n"); | |
199 | break; | |
200 | } | |
201 | ||
202 | printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); | |
203 | ||
204 | printf(" Sector Start Addresses:"); | |
205 | for (i = 0; i < info->sector_count; ++i) { | |
206 | if ((i % 5) == 0) | |
207 | printf("\n "); | |
208 | printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); | |
209 | } | |
210 | printf("\n"); | |
211 | } | |
212 | ||
213 | /*----------------------------------------------------------------------- | |
214 | */ | |
215 | ||
216 | ||
217 | /*----------------------------------------------------------------------- | |
218 | */ | |
219 | ||
220 | /* | |
221 | * The following code cannot be run from FLASH! | |
222 | */ | |
223 | ||
224 | static ulong flash_get_size(vu_long * addr, flash_info_t * info) | |
225 | { | |
226 | short i; | |
227 | uchar mid; | |
228 | uchar pid; | |
229 | vu_char *caddr = (vu_char *) addr; | |
230 | ulong base = (ulong) addr; | |
231 | ||
232 | /* Write auto select command: read Manufacturer ID */ | |
233 | caddr[0x0555] = 0xAA; | |
234 | caddr[0x02AA] = 0x55; | |
235 | caddr[0x0555] = 0x90; | |
236 | ||
237 | mid = caddr[0]; | |
238 | switch (mid) { | |
239 | case (AMD_MANUFACT & 0xFF): | |
240 | info->flash_id = FLASH_MAN_AMD; | |
241 | break; | |
242 | case (FUJ_MANUFACT & 0xFF): | |
243 | info->flash_id = FLASH_MAN_FUJ; | |
244 | break; | |
245 | case (MX_MANUFACT & 0xFF): | |
246 | info->flash_id = FLASH_MAN_MX; | |
247 | break; | |
248 | case (STM_MANUFACT & 0xFF): | |
249 | info->flash_id = FLASH_MAN_STM; | |
250 | break; | |
251 | default: | |
252 | info->flash_id = FLASH_UNKNOWN; | |
253 | info->sector_count = 0; | |
254 | info->size = 0; | |
255 | return (0); /* no or unknown flash */ | |
256 | } | |
257 | ||
258 | pid = caddr[1]; /* device ID */ | |
259 | switch (pid) { | |
260 | case (AMD_ID_LV400T & 0xFF): | |
261 | info->flash_id += FLASH_AM400T; | |
262 | info->sector_count = 11; | |
263 | info->size = 0x00080000; | |
264 | break; /* => 512 kB */ | |
265 | ||
266 | case (AMD_ID_LV400B & 0xFF): | |
267 | info->flash_id += FLASH_AM400B; | |
268 | info->sector_count = 11; | |
269 | info->size = 0x00080000; | |
270 | break; /* => 512 kB */ | |
271 | ||
272 | case (AMD_ID_LV800T & 0xFF): | |
273 | info->flash_id += FLASH_AM800T; | |
274 | info->sector_count = 19; | |
275 | info->size = 0x00100000; | |
276 | break; /* => 1 MB */ | |
277 | ||
278 | case (AMD_ID_LV800B & 0xFF): | |
279 | info->flash_id += FLASH_AM800B; | |
280 | info->sector_count = 19; | |
281 | info->size = 0x00100000; | |
282 | break; /* => 1 MB */ | |
283 | ||
284 | case (AMD_ID_LV160T & 0xFF): | |
285 | info->flash_id += FLASH_AM160T; | |
286 | info->sector_count = 35; | |
287 | info->size = 0x00200000; | |
288 | break; /* => 2 MB */ | |
289 | ||
290 | case (AMD_ID_LV160B & 0xFF): | |
291 | info->flash_id += FLASH_AM160B; | |
292 | info->sector_count = 35; | |
293 | info->size = 0x00200000; | |
294 | break; /* => 2 MB */ | |
295 | ||
296 | case (AMD_ID_LV040B & 0xFF): | |
297 | info->flash_id += FLASH_AM040; | |
298 | info->sector_count = 8; | |
299 | info->size = 0x00080000; | |
300 | break; | |
301 | ||
302 | case (STM_ID_M29W040B & 0xFF): | |
303 | info->flash_id += FLASH_AM040; | |
304 | info->sector_count = 8; | |
305 | info->size = 0x00080000; | |
306 | break; | |
307 | ||
308 | #if 0 /* enable when device IDs are available */ | |
309 | case (AMD_ID_LV320T & 0xFF): | |
310 | info->flash_id += FLASH_AM320T; | |
311 | info->sector_count = 67; | |
312 | info->size = 0x00400000; | |
313 | break; /* => 4 MB */ | |
314 | ||
315 | case (AMD_ID_LV320B & 0xFF): | |
316 | info->flash_id += FLASH_AM320B; | |
317 | info->sector_count = 67; | |
318 | info->size = 0x00400000; | |
319 | break; /* => 4 MB */ | |
320 | #endif | |
321 | default: | |
322 | info->flash_id = FLASH_UNKNOWN; | |
323 | return (0); /* => no or unknown flash */ | |
324 | ||
325 | } | |
326 | ||
327 | printf(" "); | |
328 | /* set up sector start address table */ | |
329 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
330 | for (i = 0; i < info->sector_count; i++) { | |
331 | info->start[i] = base + (i * 0x00010000); | |
332 | } | |
333 | } else if (info->flash_id & FLASH_BTYPE) { | |
334 | /* set sector offsets for bottom boot block type */ | |
335 | info->start[0] = base + 0x00000000; | |
336 | info->start[1] = base + 0x00004000; | |
337 | info->start[2] = base + 0x00006000; | |
338 | info->start[3] = base + 0x00008000; | |
339 | for (i = 4; i < info->sector_count; i++) { | |
340 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
341 | } | |
342 | } else { | |
343 | /* set sector offsets for top boot block type */ | |
344 | i = info->sector_count - 1; | |
345 | info->start[i--] = base + info->size - 0x00004000; | |
346 | info->start[i--] = base + info->size - 0x00006000; | |
347 | info->start[i--] = base + info->size - 0x00008000; | |
348 | for (; i >= 0; i--) { | |
349 | info->start[i] = base + i * 0x00010000; | |
350 | } | |
351 | } | |
352 | ||
353 | /* check for protected sectors */ | |
354 | for (i = 0; i < info->sector_count; i++) { | |
355 | /* read sector protection: D0 = 1 if protected */ | |
356 | caddr = (volatile unsigned char *)(info->start[i]); | |
357 | info->protect[i] = caddr[2] & 1; | |
358 | } | |
359 | ||
360 | /* | |
361 | * Prevent writes to uninitialized FLASH. | |
362 | */ | |
363 | if (info->flash_id != FLASH_UNKNOWN) { | |
364 | caddr = (vu_char *) info->start[0]; | |
365 | ||
366 | caddr[0x0555] = 0xAA; | |
367 | caddr[0x02AA] = 0x55; | |
368 | caddr[0x0555] = 0xF0; | |
369 | ||
370 | udelay(20000); | |
371 | } | |
372 | ||
373 | return (info->size); | |
374 | } | |
375 | ||
376 | ||
377 | /*----------------------------------------------------------------------- | |
378 | */ | |
379 | ||
380 | int flash_erase(flash_info_t * info, int s_first, int s_last) | |
381 | { | |
382 | vu_char *addr = (vu_char *) (info->start[0]); | |
383 | int flag, prot, sect, l_sect; | |
384 | ulong start, now, last; | |
385 | ||
386 | if ((s_first < 0) || (s_first > s_last)) { | |
387 | if (info->flash_id == FLASH_UNKNOWN) { | |
388 | printf("- missing\n"); | |
389 | } else { | |
390 | printf("- no sectors to erase\n"); | |
391 | } | |
392 | return 1; | |
393 | } | |
394 | ||
395 | if ((info->flash_id == FLASH_UNKNOWN) || | |
396 | (info->flash_id > FLASH_AMD_COMP)) { | |
397 | printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); | |
398 | return 1; | |
399 | } | |
400 | ||
401 | prot = 0; | |
402 | for (sect = s_first; sect <= s_last; ++sect) { | |
403 | if (info->protect[sect]) { | |
404 | prot++; | |
405 | } | |
406 | } | |
407 | ||
408 | if (prot) { | |
409 | printf("- Warning: %d protected sectors will not be erased!\n", prot); | |
410 | } else { | |
411 | printf("\n"); | |
412 | } | |
413 | ||
414 | l_sect = -1; | |
415 | ||
416 | /* Disable interrupts which might cause a timeout here */ | |
417 | flag = disable_interrupts(); | |
418 | ||
419 | addr[0x0555] = 0xAA; | |
420 | addr[0x02AA] = 0x55; | |
421 | addr[0x0555] = 0x80; | |
422 | addr[0x0555] = 0xAA; | |
423 | addr[0x02AA] = 0x55; | |
424 | ||
425 | /* Start erase on unprotected sectors */ | |
426 | for (sect = s_first; sect <= s_last; sect++) { | |
427 | if (info->protect[sect] == 0) { /* not protected */ | |
428 | addr = (vu_char *) (info->start[sect]); | |
429 | addr[0] = 0x30; | |
430 | l_sect = sect; | |
431 | } | |
432 | } | |
433 | ||
434 | /* re-enable interrupts if necessary */ | |
435 | if (flag) | |
436 | enable_interrupts(); | |
437 | ||
438 | /* wait at least 80us - let's wait 1 ms */ | |
439 | udelay(1000); | |
440 | ||
441 | /* | |
442 | * We wait for the last triggered sector | |
443 | */ | |
444 | if (l_sect < 0) | |
445 | goto DONE; | |
446 | ||
447 | start = get_timer(0); | |
448 | last = start; | |
449 | addr = (vu_char *) (info->start[l_sect]); | |
450 | while ((addr[0] & 0x80) != 0x80) { | |
6d0f6bcf | 451 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
04a85b3b WD |
452 | printf("Timeout\n"); |
453 | return 1; | |
454 | } | |
455 | /* show that we're waiting */ | |
456 | if ((now - last) > 1000) { /* every second */ | |
457 | putc('.'); | |
458 | last = now; | |
459 | } | |
460 | } | |
461 | ||
462 | DONE: | |
463 | /* reset to read mode */ | |
464 | addr = (vu_char *) info->start[0]; | |
465 | addr[0] = 0xF0; /* reset bank */ | |
466 | ||
467 | printf(" done\n"); | |
468 | return 0; | |
469 | } | |
470 | ||
471 | /*----------------------------------------------------------------------- | |
472 | * Copy memory to flash, returns: | |
473 | * 0 - OK | |
474 | * 1 - write timeout | |
475 | * 2 - Flash not erased | |
476 | */ | |
477 | ||
478 | int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) | |
479 | { | |
480 | int rc; | |
481 | ||
482 | while (cnt > 0) { | |
483 | if ((rc = write_byte(info, addr++, *src++)) != 0) { | |
484 | return (rc); | |
485 | } | |
486 | --cnt; | |
487 | } | |
488 | ||
489 | return (0); | |
490 | } | |
491 | ||
492 | /*----------------------------------------------------------------------- | |
493 | * Write a word to Flash, returns: | |
494 | * 0 - OK | |
495 | * 1 - write timeout | |
496 | * 2 - Flash not erased | |
497 | */ | |
498 | static int write_byte(flash_info_t * info, ulong dest, uchar data) | |
499 | { | |
500 | vu_char *addr = (vu_char *) (info->start[0]); | |
501 | ulong start; | |
502 | int flag; | |
503 | ||
504 | /* Check if Flash is (sufficiently) erased */ | |
505 | if ((*((vu_char *) dest) & data) != data) { | |
506 | return (2); | |
507 | } | |
508 | /* Disable interrupts which might cause a timeout here */ | |
509 | flag = disable_interrupts(); | |
510 | ||
511 | addr[0x0555] = 0xAA; | |
512 | addr[0x02AA] = 0x55; | |
513 | addr[0x0555] = 0xA0; | |
514 | ||
515 | *((vu_char *) dest) = data; | |
516 | ||
517 | /* re-enable interrupts if necessary */ | |
518 | if (flag) | |
519 | enable_interrupts(); | |
520 | ||
521 | /* data polling for D7 */ | |
522 | start = get_timer(0); | |
523 | while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) { | |
6d0f6bcf | 524 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
04a85b3b WD |
525 | return (1); |
526 | } | |
527 | } | |
528 | return (0); | |
529 | } |