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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; | |
44 | int i; | |
45 | ||
46 | /* Init: no FLASHes known */ | |
6d0f6bcf | 47 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) |
04a85b3b WD |
48 | flash_info[i].flash_id = FLASH_UNKNOWN; |
49 | ||
50 | size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); | |
51 | ||
52 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
53 | printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size, size << 20); | |
54 | } | |
55 | ||
56 | /* Remap FLASH according to real size */ | |
6d0f6bcf JCPV |
57 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
58 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK)); | |
04a85b3b WD |
59 | |
60 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 61 | size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
04a85b3b | 62 | |
6d0f6bcf | 63 | flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
04a85b3b WD |
64 | |
65 | /* monitor protection ON by default */ | |
66 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 67 | CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, |
04a85b3b WD |
68 | &flash_info[0]); |
69 | ||
70 | flash_protect ( FLAG_PROTECT_SET, | |
0e8d1586 | 71 | CONFIG_ENV_ADDR, |
dfcd7f21 | 72 | CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, |
04a85b3b WD |
73 | &flash_info[0]); |
74 | ||
0e8d1586 | 75 | #ifdef CONFIG_ENV_ADDR_REDUND |
04a85b3b | 76 | flash_protect ( FLAG_PROTECT_SET, |
0e8d1586 | 77 | CONFIG_ENV_ADDR_REDUND, |
dfcd7f21 | 78 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, |
04a85b3b WD |
79 | &flash_info[0]); |
80 | #endif | |
81 | ||
82 | ||
83 | flash_info[0].size = size; | |
84 | ||
85 | return (size); | |
86 | } | |
87 | ||
88 | /*----------------------------------------------------------------------- | |
89 | */ | |
90 | static void flash_get_offsets(ulong base, flash_info_t * info) | |
91 | { | |
92 | int i; | |
93 | ||
94 | /* set up sector start address table */ | |
95 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
96 | for (i = 0; i < info->sector_count; i++) { | |
97 | info->start[i] = base + (i * 0x00010000); | |
98 | } | |
99 | } else if (info->flash_id & FLASH_BTYPE) { | |
100 | /* set sector offsets for bottom boot block type */ | |
101 | info->start[0] = base + 0x00000000; | |
102 | info->start[1] = base + 0x00004000; | |
103 | info->start[2] = base + 0x00006000; | |
104 | info->start[3] = base + 0x00008000; | |
105 | for (i = 4; i < info->sector_count; i++) { | |
106 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
107 | } | |
108 | } else { | |
109 | /* set sector offsets for top boot block type */ | |
110 | i = info->sector_count - 1; | |
111 | info->start[i--] = base + info->size - 0x00004000; | |
112 | info->start[i--] = base + info->size - 0x00006000; | |
113 | info->start[i--] = base + info->size - 0x00008000; | |
114 | for (; i >= 0; i--) { | |
115 | info->start[i] = base + i * 0x00010000; | |
116 | } | |
117 | } | |
118 | ||
119 | } | |
120 | ||
121 | /*----------------------------------------------------------------------- | |
122 | */ | |
123 | void flash_print_info(flash_info_t * info) | |
124 | { | |
125 | int i; | |
126 | ||
127 | if (info->flash_id == FLASH_UNKNOWN) { | |
128 | printf("missing or unknown FLASH type\n"); | |
129 | return; | |
130 | } | |
131 | ||
132 | switch (info->flash_id & FLASH_VENDMASK) { | |
133 | case FLASH_MAN_AMD: | |
134 | printf("AMD "); | |
135 | break; | |
136 | case FLASH_MAN_FUJ: | |
137 | printf("FUJITSU "); | |
138 | break; | |
139 | case FLASH_MAN_MX: | |
140 | printf("MXIC "); | |
141 | break; | |
142 | default: | |
143 | printf("Unknown Vendor "); | |
144 | break; | |
145 | } | |
146 | ||
147 | switch (info->flash_id & FLASH_TYPEMASK) { | |
148 | case FLASH_AM040: | |
149 | printf("AM29LV040B (4 Mbit, bottom boot sect)\n"); | |
150 | break; | |
151 | case FLASH_AM400B: | |
152 | printf("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
153 | break; | |
154 | case FLASH_AM400T: | |
155 | printf("AM29LV400T (4 Mbit, top boot sector)\n"); | |
156 | break; | |
157 | case FLASH_AM800B: | |
158 | printf("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
159 | break; | |
160 | case FLASH_AM800T: | |
161 | printf("AM29LV800T (8 Mbit, top boot sector)\n"); | |
162 | break; | |
163 | case FLASH_AM160B: | |
164 | printf("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
165 | break; | |
166 | case FLASH_AM160T: | |
167 | printf("AM29LV160T (16 Mbit, top boot sector)\n"); | |
168 | break; | |
169 | case FLASH_AM320B: | |
170 | printf("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
171 | break; | |
172 | case FLASH_AM320T: | |
173 | printf("AM29LV320T (32 Mbit, top boot sector)\n"); | |
174 | break; | |
175 | default: | |
176 | printf("Unknown Chip Type\n"); | |
177 | break; | |
178 | } | |
179 | ||
180 | printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); | |
181 | ||
182 | printf(" Sector Start Addresses:"); | |
183 | for (i = 0; i < info->sector_count; ++i) { | |
184 | if ((i % 5) == 0) | |
185 | printf("\n "); | |
186 | printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); | |
187 | } | |
188 | printf("\n"); | |
189 | } | |
190 | ||
191 | /*----------------------------------------------------------------------- | |
192 | */ | |
193 | ||
194 | ||
195 | /*----------------------------------------------------------------------- | |
196 | */ | |
197 | ||
198 | /* | |
199 | * The following code cannot be run from FLASH! | |
200 | */ | |
201 | ||
202 | static ulong flash_get_size(vu_long * addr, flash_info_t * info) | |
203 | { | |
204 | short i; | |
205 | uchar mid; | |
206 | uchar pid; | |
207 | vu_char *caddr = (vu_char *) addr; | |
208 | ulong base = (ulong) addr; | |
209 | ||
210 | ||
211 | /* Write auto select command: read Manufacturer ID */ | |
212 | caddr[0x0555] = 0xAA; | |
213 | caddr[0x02AA] = 0x55; | |
214 | caddr[0x0555] = 0x90; | |
215 | ||
216 | mid = caddr[0]; | |
217 | switch (mid) { | |
218 | case (AMD_MANUFACT & 0xFF): | |
219 | info->flash_id = FLASH_MAN_AMD; | |
220 | break; | |
221 | case (FUJ_MANUFACT & 0xFF): | |
222 | info->flash_id = FLASH_MAN_FUJ; | |
223 | break; | |
224 | case (MX_MANUFACT & 0xFF): | |
225 | info->flash_id = FLASH_MAN_MX; | |
226 | break; | |
227 | case (STM_MANUFACT & 0xFF): | |
228 | info->flash_id = FLASH_MAN_STM; | |
229 | break; | |
230 | default: | |
231 | info->flash_id = FLASH_UNKNOWN; | |
232 | info->sector_count = 0; | |
233 | info->size = 0; | |
234 | return (0); /* no or unknown flash */ | |
235 | } | |
236 | ||
237 | pid = caddr[1]; /* device ID */ | |
238 | switch (pid) { | |
239 | case (AMD_ID_LV400T & 0xFF): | |
240 | info->flash_id += FLASH_AM400T; | |
241 | info->sector_count = 11; | |
242 | info->size = 0x00080000; | |
243 | break; /* => 512 kB */ | |
244 | ||
245 | case (AMD_ID_LV400B & 0xFF): | |
246 | info->flash_id += FLASH_AM400B; | |
247 | info->sector_count = 11; | |
248 | info->size = 0x00080000; | |
249 | break; /* => 512 kB */ | |
250 | ||
251 | case (AMD_ID_LV800T & 0xFF): | |
252 | info->flash_id += FLASH_AM800T; | |
253 | info->sector_count = 19; | |
254 | info->size = 0x00100000; | |
255 | break; /* => 1 MB */ | |
256 | ||
257 | case (AMD_ID_LV800B & 0xFF): | |
258 | info->flash_id += FLASH_AM800B; | |
259 | info->sector_count = 19; | |
260 | info->size = 0x00100000; | |
261 | break; /* => 1 MB */ | |
262 | ||
263 | case (AMD_ID_LV160T & 0xFF): | |
264 | info->flash_id += FLASH_AM160T; | |
265 | info->sector_count = 35; | |
266 | info->size = 0x00200000; | |
267 | break; /* => 2 MB */ | |
268 | ||
269 | case (AMD_ID_LV160B & 0xFF): | |
270 | info->flash_id += FLASH_AM160B; | |
271 | info->sector_count = 35; | |
272 | info->size = 0x00200000; | |
273 | break; /* => 2 MB */ | |
274 | ||
275 | case (AMD_ID_LV040B & 0xFF): | |
276 | info->flash_id += FLASH_AM040; | |
277 | info->sector_count = 8; | |
278 | info->size = 0x00080000; | |
279 | break; | |
280 | ||
281 | case (STM_ID_M29W040B & 0xFF): | |
282 | info->flash_id += FLASH_AM040; | |
283 | info->sector_count = 8; | |
284 | info->size = 0x00080000; | |
285 | break; | |
286 | ||
287 | #if 0 /* enable when device IDs are available */ | |
288 | case (AMD_ID_LV320T & 0xFF): | |
289 | info->flash_id += FLASH_AM320T; | |
290 | info->sector_count = 67; | |
291 | info->size = 0x00400000; | |
292 | break; /* => 4 MB */ | |
293 | ||
294 | case (AMD_ID_LV320B & 0xFF): | |
295 | info->flash_id += FLASH_AM320B; | |
296 | info->sector_count = 67; | |
297 | info->size = 0x00400000; | |
298 | break; /* => 4 MB */ | |
299 | #endif | |
300 | default: | |
301 | info->flash_id = FLASH_UNKNOWN; | |
302 | return (0); /* => no or unknown flash */ | |
303 | ||
304 | } | |
305 | ||
306 | printf(" "); | |
307 | /* set up sector start address table */ | |
308 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
309 | for (i = 0; i < info->sector_count; i++) { | |
310 | info->start[i] = base + (i * 0x00010000); | |
311 | } | |
312 | } else if (info->flash_id & FLASH_BTYPE) { | |
313 | /* set sector offsets for bottom boot block type */ | |
314 | info->start[0] = base + 0x00000000; | |
315 | info->start[1] = base + 0x00004000; | |
316 | info->start[2] = base + 0x00006000; | |
317 | info->start[3] = base + 0x00008000; | |
318 | for (i = 4; i < info->sector_count; i++) { | |
319 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
320 | } | |
321 | } else { | |
322 | /* set sector offsets for top boot block type */ | |
323 | i = info->sector_count - 1; | |
324 | info->start[i--] = base + info->size - 0x00004000; | |
325 | info->start[i--] = base + info->size - 0x00006000; | |
326 | info->start[i--] = base + info->size - 0x00008000; | |
327 | for (; i >= 0; i--) { | |
328 | info->start[i] = base + i * 0x00010000; | |
329 | } | |
330 | } | |
331 | ||
332 | /* check for protected sectors */ | |
333 | for (i = 0; i < info->sector_count; i++) { | |
334 | /* read sector protection: D0 = 1 if protected */ | |
335 | caddr = (volatile unsigned char *)(info->start[i]); | |
336 | info->protect[i] = caddr[2] & 1; | |
337 | } | |
338 | ||
339 | /* | |
340 | * Prevent writes to uninitialized FLASH. | |
341 | */ | |
342 | if (info->flash_id != FLASH_UNKNOWN) { | |
343 | caddr = (vu_char *) info->start[0]; | |
344 | ||
345 | caddr[0x0555] = 0xAA; | |
346 | caddr[0x02AA] = 0x55; | |
347 | caddr[0x0555] = 0xF0; | |
348 | ||
349 | udelay(20000); | |
350 | } | |
351 | ||
352 | return (info->size); | |
353 | } | |
354 | ||
355 | ||
356 | /*----------------------------------------------------------------------- | |
357 | */ | |
358 | ||
359 | int flash_erase(flash_info_t * info, int s_first, int s_last) | |
360 | { | |
361 | vu_char *addr = (vu_char *) (info->start[0]); | |
362 | int flag, prot, sect, l_sect; | |
363 | ulong start, now, last; | |
364 | ||
365 | if ((s_first < 0) || (s_first > s_last)) { | |
366 | if (info->flash_id == FLASH_UNKNOWN) { | |
367 | printf("- missing\n"); | |
368 | } else { | |
369 | printf("- no sectors to erase\n"); | |
370 | } | |
371 | return 1; | |
372 | } | |
373 | ||
374 | if ((info->flash_id == FLASH_UNKNOWN) || | |
375 | (info->flash_id > FLASH_AMD_COMP)) { | |
376 | printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); | |
377 | return 1; | |
378 | } | |
379 | ||
380 | prot = 0; | |
381 | for (sect = s_first; sect <= s_last; ++sect) { | |
382 | if (info->protect[sect]) { | |
383 | prot++; | |
384 | } | |
385 | } | |
386 | ||
387 | if (prot) { | |
388 | printf("- Warning: %d protected sectors will not be erased!\n", prot); | |
389 | } else { | |
390 | printf("\n"); | |
391 | } | |
392 | ||
393 | l_sect = -1; | |
394 | ||
395 | /* Disable interrupts which might cause a timeout here */ | |
396 | flag = disable_interrupts(); | |
397 | ||
398 | addr[0x0555] = 0xAA; | |
399 | addr[0x02AA] = 0x55; | |
400 | addr[0x0555] = 0x80; | |
401 | addr[0x0555] = 0xAA; | |
402 | addr[0x02AA] = 0x55; | |
403 | ||
404 | /* Start erase on unprotected sectors */ | |
405 | for (sect = s_first; sect <= s_last; sect++) { | |
406 | if (info->protect[sect] == 0) { /* not protected */ | |
407 | addr = (vu_char *) (info->start[sect]); | |
408 | addr[0] = 0x30; | |
409 | l_sect = sect; | |
410 | } | |
411 | } | |
412 | ||
413 | /* re-enable interrupts if necessary */ | |
414 | if (flag) | |
415 | enable_interrupts(); | |
416 | ||
417 | /* wait at least 80us - let's wait 1 ms */ | |
418 | udelay(1000); | |
419 | ||
420 | /* | |
421 | * We wait for the last triggered sector | |
422 | */ | |
423 | if (l_sect < 0) | |
424 | goto DONE; | |
425 | ||
426 | start = get_timer(0); | |
427 | last = start; | |
428 | addr = (vu_char *) (info->start[l_sect]); | |
429 | while ((addr[0] & 0x80) != 0x80) { | |
6d0f6bcf | 430 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
04a85b3b WD |
431 | printf("Timeout\n"); |
432 | return 1; | |
433 | } | |
434 | /* show that we're waiting */ | |
435 | if ((now - last) > 1000) { /* every second */ | |
436 | putc('.'); | |
437 | last = now; | |
438 | } | |
439 | } | |
440 | ||
441 | DONE: | |
442 | /* reset to read mode */ | |
443 | addr = (vu_char *) info->start[0]; | |
444 | addr[0] = 0xF0; /* reset bank */ | |
445 | ||
446 | printf(" done\n"); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | /*----------------------------------------------------------------------- | |
451 | * Copy memory to flash, returns: | |
452 | * 0 - OK | |
453 | * 1 - write timeout | |
454 | * 2 - Flash not erased | |
455 | */ | |
456 | ||
457 | int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) | |
458 | { | |
459 | int rc; | |
460 | ||
461 | while (cnt > 0) { | |
462 | if ((rc = write_byte(info, addr++, *src++)) != 0) { | |
463 | return (rc); | |
464 | } | |
465 | --cnt; | |
466 | } | |
467 | ||
468 | return (0); | |
469 | } | |
470 | ||
471 | /*----------------------------------------------------------------------- | |
472 | * Write a word to Flash, returns: | |
473 | * 0 - OK | |
474 | * 1 - write timeout | |
475 | * 2 - Flash not erased | |
476 | */ | |
477 | static int write_byte(flash_info_t * info, ulong dest, uchar data) | |
478 | { | |
479 | vu_char *addr = (vu_char *) (info->start[0]); | |
480 | ulong start; | |
481 | int flag; | |
482 | ||
483 | /* Check if Flash is (sufficiently) erased */ | |
484 | if ((*((vu_char *) dest) & data) != data) { | |
485 | return (2); | |
486 | } | |
487 | /* Disable interrupts which might cause a timeout here */ | |
488 | flag = disable_interrupts(); | |
489 | ||
490 | addr[0x0555] = 0xAA; | |
491 | addr[0x02AA] = 0x55; | |
492 | addr[0x0555] = 0xA0; | |
493 | ||
494 | *((vu_char *) dest) = data; | |
495 | ||
496 | /* re-enable interrupts if necessary */ | |
497 | if (flag) | |
498 | enable_interrupts(); | |
499 | ||
500 | /* data polling for D7 */ | |
501 | start = get_timer(0); | |
502 | while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) { | |
6d0f6bcf | 503 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
04a85b3b WD |
504 | return (1); |
505 | } | |
506 | } | |
507 | return (0); | |
508 | } |