]>
Commit | Line | Data |
---|---|---|
fe8c2806 WD |
1 | /* |
2 | * (C) Copyright 2000 | |
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 | /* | |
25 | * Yoo. Jonghoon, IPone, yooth@ipone.co.kr | |
26 | * U-Boot port on RPXlite board | |
27 | * | |
28 | * Some of flash control words are modified. (from 2x16bit device | |
29 | * to 4x8bit device) | |
30 | * RPXLite board I tested has only 4 AM29LV800BB devices. Other devices | |
31 | * are not tested. | |
32 | * | |
33 | * (?) Does an RPXLite board which | |
53677ef1 | 34 | * does not use AM29LV800 flash memory exist ? |
fe8c2806 WD |
35 | * I don't know... |
36 | */ | |
37 | ||
38 | #include <common.h> | |
39 | #include <mpc8xx.h> | |
40 | ||
6d0f6bcf | 41 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
fe8c2806 WD |
42 | |
43 | /*----------------------------------------------------------------------- | |
44 | * Functions | |
45 | */ | |
46 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); | |
47 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
48 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
49 | ||
50 | /*----------------------------------------------------------------------- | |
51 | */ | |
52 | ||
53 | unsigned long flash_init (void) | |
54 | { | |
6d0f6bcf | 55 | /* volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; */ |
fe8c2806 WD |
56 | /* volatile memctl8xx_t *memctl = &immap->im_memctl; */ |
57 | unsigned long size_b0 ; | |
58 | int i; | |
59 | ||
60 | /* Init: no FLASHes known */ | |
6d0f6bcf | 61 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
fe8c2806 WD |
62 | flash_info[i].flash_id = FLASH_UNKNOWN; |
63 | } | |
64 | ||
65 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
66 | /* | |
67 | size_b0 = flash_get_size((vu_long *)FLASH_BASE_DEBUG, &flash_info[0]); | |
68 | ||
69 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
70 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
71 | size_b0, size_b0<<20); | |
72 | } | |
73 | */ | |
74 | /* Remap FLASH according to real size */ | |
75 | /*%%% | |
6d0f6bcf JCPV |
76 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); |
77 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V; | |
fe8c2806 WD |
78 | %%%*/ |
79 | /* Re-do sizing to get full correct info */ | |
80 | ||
6d0f6bcf JCPV |
81 | size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
82 | flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); | |
fe8c2806 | 83 | |
6d0f6bcf | 84 | #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
fe8c2806 WD |
85 | /* monitor protection ON by default */ |
86 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
87 | CONFIG_SYS_MONITOR_BASE, |
88 | CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, | |
fe8c2806 WD |
89 | &flash_info[0]); |
90 | #endif | |
91 | ||
92 | flash_info[0].size = size_b0; | |
93 | ||
94 | return (size_b0); | |
95 | } | |
96 | ||
97 | /*----------------------------------------------------------------------- | |
98 | */ | |
99 | static void flash_get_offsets (ulong base, flash_info_t *info) | |
100 | { | |
101 | int i; | |
102 | ||
103 | /* set up sector start address table */ | |
104 | if (info->flash_id & FLASH_BTYPE) { | |
105 | /* set sector offsets for bottom boot block type */ | |
106 | info->start[0] = base + 0x00000000; | |
107 | info->start[1] = base + 0x00010000; | |
108 | info->start[2] = base + 0x00018000; | |
109 | info->start[3] = base + 0x00020000; | |
110 | for (i = 4; i < info->sector_count; i++) { | |
111 | info->start[i] = base + ((i-3) * 0x00040000) ; | |
112 | } | |
113 | } else { | |
114 | /* set sector offsets for top boot block type */ | |
115 | i = info->sector_count - 1; | |
116 | info->start[i--] = base + info->size - 0x00010000; | |
117 | info->start[i--] = base + info->size - 0x00018000; | |
118 | info->start[i--] = base + info->size - 0x00020000; | |
119 | for (; i >= 0; i--) { | |
120 | info->start[i] = base + i * 0x00040000; | |
121 | } | |
122 | } | |
123 | ||
124 | } | |
125 | ||
126 | /*----------------------------------------------------------------------- | |
127 | */ | |
128 | void flash_print_info (flash_info_t *info) | |
129 | { | |
130 | int i; | |
131 | ||
132 | if (info->flash_id == FLASH_UNKNOWN) { | |
133 | printf ("missing or unknown FLASH type\n"); | |
134 | return; | |
135 | } | |
136 | ||
137 | switch (info->flash_id & FLASH_VENDMASK) { | |
138 | case FLASH_MAN_AMD: printf ("AMD "); break; | |
139 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; | |
140 | default: printf ("Unknown Vendor "); break; | |
141 | } | |
142 | ||
143 | switch (info->flash_id & FLASH_TYPEMASK) { | |
144 | case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
145 | break; | |
146 | case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
147 | break; | |
148 | case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
149 | break; | |
150 | case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
151 | break; | |
152 | case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
153 | break; | |
154 | case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
155 | break; | |
156 | case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
157 | break; | |
158 | case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
159 | break; | |
160 | default: printf ("Unknown Chip Type\n"); | |
161 | break; | |
162 | } | |
163 | ||
164 | printf (" Size: %ld MB in %d Sectors\n", | |
165 | info->size >> 20, info->sector_count); | |
166 | ||
167 | printf (" Sector Start Addresses:"); | |
168 | for (i=0; i<info->sector_count; ++i) { | |
169 | if ((i % 5) == 0) | |
170 | printf ("\n "); | |
171 | printf (" %08lX%s", | |
172 | info->start[i], | |
173 | info->protect[i] ? " (RO)" : " " | |
174 | ); | |
175 | } | |
176 | printf ("\n"); | |
177 | return; | |
178 | } | |
179 | ||
180 | /*----------------------------------------------------------------------- | |
181 | */ | |
182 | ||
183 | ||
184 | /*----------------------------------------------------------------------- | |
185 | */ | |
186 | ||
187 | /* | |
188 | * The following code cannot be run from FLASH! | |
189 | */ | |
190 | ||
191 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) | |
192 | { | |
193 | short i; | |
194 | ulong value; | |
195 | ulong base = (ulong)addr; | |
196 | ||
197 | /* Write auto select command: read Manufacturer ID */ | |
198 | addr[0xAAA] = 0x00AA00AA ; | |
199 | addr[0x555] = 0x00550055 ; | |
200 | addr[0xAAA] = 0x00900090 ; | |
201 | ||
202 | value = addr[0] ; | |
203 | ||
204 | switch (value & 0x00FF00FF) { | |
205 | case AMD_MANUFACT: | |
206 | info->flash_id = FLASH_MAN_AMD; | |
207 | break; | |
208 | case FUJ_MANUFACT: | |
209 | info->flash_id = FLASH_MAN_FUJ; | |
210 | break; | |
211 | default: | |
212 | info->flash_id = FLASH_UNKNOWN; | |
213 | info->sector_count = 0; | |
214 | info->size = 0; | |
215 | return (0); /* no or unknown flash */ | |
216 | } | |
217 | ||
218 | value = addr[2] ; /* device ID */ | |
219 | ||
220 | switch (value & 0x00FF00FF) { | |
221 | case (AMD_ID_LV400T & 0x00FF00FF): | |
222 | info->flash_id += FLASH_AM400T; | |
223 | info->sector_count = 11; | |
224 | info->size = 0x00100000; | |
225 | break; /* => 1 MB */ | |
226 | ||
227 | case (AMD_ID_LV400B & 0x00FF00FF): | |
228 | info->flash_id += FLASH_AM400B; | |
229 | info->sector_count = 11; | |
230 | info->size = 0x00100000; | |
231 | break; /* => 1 MB */ | |
232 | ||
233 | case (AMD_ID_LV800T & 0x00FF00FF): | |
234 | info->flash_id += FLASH_AM800T; | |
235 | info->sector_count = 19; | |
236 | info->size = 0x00200000; | |
237 | break; /* => 2 MB */ | |
238 | ||
239 | case (AMD_ID_LV800B & 0x00FF00FF): | |
240 | info->flash_id += FLASH_AM800B; | |
241 | info->sector_count = 19; | |
242 | info->size = 0x00400000; /*%%% Size doubled by yooth */ | |
243 | break; /* => 4 MB */ | |
244 | ||
245 | case (AMD_ID_LV160T & 0x00FF00FF): | |
246 | info->flash_id += FLASH_AM160T; | |
247 | info->sector_count = 35; | |
248 | info->size = 0x00400000; | |
249 | break; /* => 4 MB */ | |
250 | ||
251 | case (AMD_ID_LV160B & 0x00FF00FF): | |
252 | info->flash_id += FLASH_AM160B; | |
253 | info->sector_count = 35; | |
254 | info->size = 0x00400000; | |
255 | break; /* => 4 MB */ | |
256 | #if 0 /* enable when device IDs are available */ | |
257 | case AMD_ID_LV320T: | |
258 | info->flash_id += FLASH_AM320T; | |
259 | info->sector_count = 67; | |
260 | info->size = 0x00800000; | |
261 | break; /* => 8 MB */ | |
262 | ||
263 | case AMD_ID_LV320B: | |
264 | info->flash_id += FLASH_AM320B; | |
265 | info->sector_count = 67; | |
266 | info->size = 0x00800000; | |
267 | break; /* => 8 MB */ | |
268 | #endif | |
269 | default: | |
270 | info->flash_id = FLASH_UNKNOWN; | |
271 | return (0); /* => no or unknown flash */ | |
272 | ||
273 | } | |
274 | /*%%% sector start address modified */ | |
275 | /* set up sector start address table */ | |
276 | if (info->flash_id & FLASH_BTYPE) { | |
277 | /* set sector offsets for bottom boot block type */ | |
278 | info->start[0] = base + 0x00000000; | |
279 | info->start[1] = base + 0x00010000; | |
280 | info->start[2] = base + 0x00018000; | |
281 | info->start[3] = base + 0x00020000; | |
282 | for (i = 4; i < info->sector_count; i++) { | |
283 | info->start[i] = base + ((i-3) * 0x00040000) ; | |
284 | } | |
285 | } else { | |
286 | /* set sector offsets for top boot block type */ | |
287 | i = info->sector_count - 1; | |
288 | info->start[i--] = base + info->size - 0x00010000; | |
289 | info->start[i--] = base + info->size - 0x00018000; | |
290 | info->start[i--] = base + info->size - 0x00020000; | |
291 | for (; i >= 0; i--) { | |
292 | info->start[i] = base + i * 0x00040000; | |
293 | } | |
294 | } | |
295 | ||
296 | /* check for protected sectors */ | |
297 | for (i = 0; i < info->sector_count; i++) { | |
298 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ | |
299 | /* D0 = 1 if protected */ | |
300 | addr = (volatile unsigned long *)(info->start[i]); | |
301 | info->protect[i] = addr[4] & 1 ; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Prevent writes to uninitialized FLASH. | |
306 | */ | |
307 | if (info->flash_id != FLASH_UNKNOWN) { | |
308 | addr = (volatile unsigned long *)info->start[0]; | |
309 | ||
310 | *addr = 0xF0F0F0F0; /* reset bank */ | |
311 | } | |
312 | ||
313 | return (info->size); | |
314 | } | |
315 | ||
316 | ||
317 | /*----------------------------------------------------------------------- | |
318 | */ | |
319 | ||
320 | int flash_erase (flash_info_t *info, int s_first, int s_last) | |
321 | { | |
322 | vu_long *addr = (vu_long*)(info->start[0]); | |
323 | int flag, prot, sect, l_sect; | |
324 | ulong start, now, last; | |
325 | ||
326 | if ((s_first < 0) || (s_first > s_last)) { | |
327 | if (info->flash_id == FLASH_UNKNOWN) { | |
328 | printf ("- missing\n"); | |
329 | } else { | |
330 | printf ("- no sectors to erase\n"); | |
331 | } | |
332 | return 1; | |
333 | } | |
334 | ||
335 | if ((info->flash_id == FLASH_UNKNOWN) || | |
336 | (info->flash_id > FLASH_AMD_COMP)) { | |
337 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
338 | info->flash_id); | |
339 | return 1; | |
340 | } | |
341 | ||
342 | prot = 0; | |
343 | for (sect=s_first; sect<=s_last; ++sect) { | |
344 | if (info->protect[sect]) { | |
345 | prot++; | |
346 | } | |
347 | } | |
348 | ||
349 | if (prot) { | |
350 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
351 | prot); | |
352 | } else { | |
353 | printf ("\n"); | |
354 | } | |
355 | ||
356 | l_sect = -1; | |
357 | ||
358 | /* Disable interrupts which might cause a timeout here */ | |
359 | flag = disable_interrupts(); | |
360 | ||
361 | addr[0xAAA] = 0xAAAAAAAA; | |
362 | addr[0x555] = 0x55555555; | |
363 | addr[0xAAA] = 0x80808080; | |
364 | addr[0xAAA] = 0xAAAAAAAA; | |
365 | addr[0x555] = 0x55555555; | |
366 | ||
367 | /* Start erase on unprotected sectors */ | |
368 | for (sect = s_first; sect<=s_last; sect++) { | |
369 | if (info->protect[sect] == 0) { /* not protected */ | |
370 | addr = (vu_long *)(info->start[sect]) ; | |
371 | addr[0] = 0x30303030 ; | |
372 | l_sect = sect; | |
373 | } | |
374 | } | |
375 | ||
376 | /* re-enable interrupts if necessary */ | |
377 | if (flag) | |
378 | enable_interrupts(); | |
379 | ||
380 | /* wait at least 80us - let's wait 1 ms */ | |
381 | udelay (1000); | |
382 | ||
383 | /* | |
384 | * We wait for the last triggered sector | |
385 | */ | |
386 | if (l_sect < 0) | |
387 | goto DONE; | |
388 | ||
389 | start = get_timer (0); | |
390 | last = start; | |
391 | addr = (vu_long *)(info->start[l_sect]); | |
392 | while ((addr[0] & 0x80808080) != 0x80808080) { | |
6d0f6bcf | 393 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
fe8c2806 WD |
394 | printf ("Timeout\n"); |
395 | return 1; | |
396 | } | |
397 | /* show that we're waiting */ | |
398 | if ((now - last) > 1000) { /* every second */ | |
399 | putc ('.'); | |
400 | last = now; | |
401 | } | |
402 | } | |
403 | ||
404 | DONE: | |
405 | /* reset to read mode */ | |
406 | addr = (vu_long *)info->start[0]; | |
407 | addr[0] = 0xF0F0F0F0; /* reset bank */ | |
408 | ||
409 | printf (" done\n"); | |
410 | return 0; | |
411 | } | |
412 | ||
413 | /*----------------------------------------------------------------------- | |
414 | * Copy memory to flash, returns: | |
415 | * 0 - OK | |
416 | * 1 - write timeout | |
417 | * 2 - Flash not erased | |
418 | */ | |
419 | ||
420 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
421 | { | |
422 | ulong cp, wp, data; | |
423 | int i, l, rc; | |
424 | ||
425 | wp = (addr & ~3); /* get lower word aligned address */ | |
426 | ||
427 | /* | |
428 | * handle unaligned start bytes | |
429 | */ | |
430 | if ((l = addr - wp) != 0) { | |
431 | data = 0; | |
432 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
433 | data = (data << 8) | (*(uchar *)cp); | |
434 | } | |
435 | for (; i<4 && cnt>0; ++i) { | |
436 | data = (data << 8) | *src++; | |
437 | --cnt; | |
438 | ++cp; | |
439 | } | |
440 | for (; cnt==0 && i<4; ++i, ++cp) { | |
441 | data = (data << 8) | (*(uchar *)cp); | |
442 | } | |
443 | ||
444 | if ((rc = write_word(info, wp, data)) != 0) { | |
445 | return (rc); | |
446 | } | |
447 | wp += 4; | |
448 | } | |
449 | ||
450 | /* | |
451 | * handle word aligned part | |
452 | */ | |
453 | while (cnt >= 4) { | |
454 | data = 0; | |
455 | for (i=0; i<4; ++i) { | |
456 | data = (data << 8) | *src++; | |
457 | } | |
458 | if ((rc = write_word(info, wp, data)) != 0) { | |
459 | return (rc); | |
460 | } | |
461 | wp += 4; | |
462 | cnt -= 4; | |
463 | } | |
464 | ||
465 | if (cnt == 0) { | |
466 | return (0); | |
467 | } | |
468 | ||
469 | /* | |
470 | * handle unaligned tail bytes | |
471 | */ | |
472 | data = 0; | |
473 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
474 | data = (data << 8) | *src++; | |
475 | --cnt; | |
476 | } | |
477 | for (; i<4; ++i, ++cp) { | |
478 | data = (data << 8) | (*(uchar *)cp); | |
479 | } | |
480 | ||
481 | return (write_word(info, wp, data)); | |
482 | } | |
483 | ||
484 | /*----------------------------------------------------------------------- | |
485 | * Write a word to Flash, returns: | |
486 | * 0 - OK | |
487 | * 1 - write timeout | |
488 | * 2 - Flash not erased | |
489 | */ | |
490 | static int write_word (flash_info_t *info, ulong dest, ulong data) | |
491 | { | |
492 | vu_long *addr = (vu_long *)(info->start[0]); | |
493 | ulong start; | |
494 | int flag; | |
495 | ||
496 | /* Check if Flash is (sufficiently) erased */ | |
497 | if ((*((vu_long *)dest) & data) != data) { | |
498 | return (2); | |
499 | } | |
500 | /* Disable interrupts which might cause a timeout here */ | |
501 | flag = disable_interrupts(); | |
502 | ||
503 | addr[0xAAA] = 0xAAAAAAAA; | |
504 | addr[0x555] = 0x55555555; | |
505 | addr[0xAAA] = 0xA0A0A0A0; | |
506 | ||
507 | *((vu_long *)dest) = data; | |
508 | ||
509 | /* re-enable interrupts if necessary */ | |
510 | if (flag) | |
511 | enable_interrupts(); | |
512 | ||
513 | /* data polling for D7 */ | |
514 | start = get_timer (0); | |
515 | while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) { | |
6d0f6bcf | 516 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
fe8c2806 WD |
517 | return (1); |
518 | } | |
519 | } | |
520 | return (0); | |
521 | } | |
522 | ||
523 | /*----------------------------------------------------------------------- | |
524 | */ |