]>
Commit | Line | Data |
---|---|---|
79fa88f3 WD |
1 | /* |
2 | * (C) Copyright 2000-2004 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
79fa88f3 WD |
6 | */ |
7 | ||
8 | #include <common.h> | |
9 | #include <mpc8xx.h> | |
10 | ||
6d0f6bcf | 11 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
79fa88f3 WD |
12 | |
13 | /*----------------------------------------------------------------------- | |
14 | * Functions | |
15 | */ | |
16 | static ulong flash_get_size(vu_long * addr, flash_info_t * info); | |
17 | static int write_byte(flash_info_t * info, ulong dest, uchar data); | |
18 | static void flash_get_offsets(ulong base, flash_info_t * info); | |
19 | ||
20 | /*----------------------------------------------------------------------- | |
21 | */ | |
22 | ||
23 | unsigned long flash_init(void) | |
24 | { | |
6d0f6bcf | 25 | volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; |
79fa88f3 WD |
26 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
27 | unsigned long size; | |
28 | int i; | |
29 | ||
30 | /* Init: no FLASHes known */ | |
6d0f6bcf | 31 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) |
79fa88f3 WD |
32 | flash_info[i].flash_id = FLASH_UNKNOWN; |
33 | ||
34 | size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); | |
35 | ||
36 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
37 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
38 | size, size << 20); | |
39 | } | |
40 | ||
41 | /* Remap FLASH according to real size */ | |
6d0f6bcf JCPV |
42 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
43 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK)); | |
79fa88f3 WD |
44 | |
45 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 46 | size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
79fa88f3 | 47 | |
6d0f6bcf | 48 | flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
79fa88f3 WD |
49 | |
50 | /* monitor protection ON by default */ | |
51 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 52 | CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, |
79fa88f3 WD |
53 | &flash_info[0]); |
54 | ||
55 | flash_protect ( FLAG_PROTECT_SET, | |
0e8d1586 | 56 | CONFIG_ENV_ADDR, |
dfcd7f21 | 57 | CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, |
79fa88f3 WD |
58 | &flash_info[0]); |
59 | ||
0e8d1586 | 60 | #ifdef CONFIG_ENV_ADDR_REDUND |
79fa88f3 | 61 | flash_protect ( FLAG_PROTECT_SET, |
0e8d1586 | 62 | CONFIG_ENV_ADDR_REDUND, |
dfcd7f21 | 63 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, |
79fa88f3 WD |
64 | &flash_info[0]); |
65 | #endif | |
66 | ||
67 | flash_info[0].size = size; | |
68 | ||
69 | return (size); | |
70 | } | |
71 | ||
72 | /*----------------------------------------------------------------------- | |
73 | */ | |
74 | static void flash_get_offsets(ulong base, flash_info_t * info) | |
75 | { | |
76 | int i; | |
77 | ||
78 | /* set up sector start address table */ | |
79 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
80 | for (i = 0; i < info->sector_count; i++) { | |
81 | info->start[i] = base + (i * 0x00010000); | |
82 | } | |
83 | } else if (info->flash_id & FLASH_BTYPE) { | |
84 | /* set sector offsets for bottom boot block type */ | |
85 | info->start[0] = base + 0x00000000; | |
86 | info->start[1] = base + 0x00004000; | |
87 | info->start[2] = base + 0x00006000; | |
88 | info->start[3] = base + 0x00008000; | |
89 | for (i = 4; i < info->sector_count; i++) { | |
90 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
91 | } | |
92 | } else { | |
93 | /* set sector offsets for top boot block type */ | |
94 | i = info->sector_count - 1; | |
95 | info->start[i--] = base + info->size - 0x00004000; | |
96 | info->start[i--] = base + info->size - 0x00006000; | |
97 | info->start[i--] = base + info->size - 0x00008000; | |
98 | for (; i >= 0; i--) { | |
99 | info->start[i] = base + i * 0x00010000; | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | /*----------------------------------------------------------------------- | |
105 | */ | |
106 | void flash_print_info(flash_info_t * info) | |
107 | { | |
108 | int i; | |
109 | ||
110 | if (info->flash_id == FLASH_UNKNOWN) { | |
111 | printf("missing or unknown FLASH type\n"); | |
112 | return; | |
113 | } | |
114 | ||
115 | switch (info->flash_id & FLASH_VENDMASK) { | |
116 | case FLASH_MAN_AMD: | |
117 | printf("AMD "); | |
118 | break; | |
119 | case FLASH_MAN_FUJ: | |
120 | printf("FUJITSU "); | |
121 | break; | |
122 | case FLASH_MAN_MX: | |
123 | printf("MXIC "); | |
124 | break; | |
125 | default: | |
126 | printf("Unknown Vendor "); | |
127 | break; | |
128 | } | |
129 | ||
130 | switch (info->flash_id & FLASH_TYPEMASK) { | |
131 | case FLASH_AM040: | |
132 | printf("AM29LV040B (4 Mbit, bottom boot sect)\n"); | |
133 | break; | |
134 | case FLASH_AM400B: | |
135 | printf("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
136 | break; | |
137 | case FLASH_AM400T: | |
138 | printf("AM29LV400T (4 Mbit, top boot sector)\n"); | |
139 | break; | |
140 | case FLASH_AM800B: | |
141 | printf("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
142 | break; | |
143 | case FLASH_AM800T: | |
144 | printf("AM29LV800T (8 Mbit, top boot sector)\n"); | |
145 | break; | |
146 | case FLASH_AM160B: | |
147 | printf("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
148 | break; | |
149 | case FLASH_AM160T: | |
150 | printf("AM29LV160T (16 Mbit, top boot sector)\n"); | |
151 | break; | |
152 | case FLASH_AM320B: | |
153 | printf("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
154 | break; | |
155 | case FLASH_AM320T: | |
156 | printf("AM29LV320T (32 Mbit, top boot sector)\n"); | |
157 | break; | |
158 | default: | |
159 | printf("Unknown Chip Type\n"); | |
160 | break; | |
161 | } | |
162 | ||
163 | printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); | |
164 | ||
165 | printf(" Sector Start Addresses:"); | |
166 | for (i = 0; i < info->sector_count; ++i) { | |
167 | if ((i % 5) == 0) | |
168 | printf("\n "); | |
169 | printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); | |
170 | } | |
171 | printf("\n"); | |
172 | } | |
173 | ||
174 | /*----------------------------------------------------------------------- | |
175 | */ | |
176 | ||
177 | ||
178 | /*----------------------------------------------------------------------- | |
179 | */ | |
180 | ||
181 | /* | |
182 | * The following code cannot be run from FLASH! | |
183 | */ | |
184 | ||
185 | static ulong flash_get_size(vu_long * addr, flash_info_t * info) | |
186 | { | |
187 | short i; | |
188 | uchar mid; | |
189 | uchar pid; | |
190 | vu_char *caddr = (vu_char *) addr; | |
191 | ulong base = (ulong) addr; | |
192 | ||
193 | /* Write auto select command: read Manufacturer ID */ | |
194 | caddr[0x0555] = 0xAA; | |
195 | caddr[0x02AA] = 0x55; | |
196 | caddr[0x0555] = 0x90; | |
197 | ||
198 | mid = caddr[0]; | |
199 | switch (mid) { | |
200 | case (AMD_MANUFACT & 0xFF): | |
201 | info->flash_id = FLASH_MAN_AMD; | |
202 | break; | |
203 | case (FUJ_MANUFACT & 0xFF): | |
204 | info->flash_id = FLASH_MAN_FUJ; | |
205 | break; | |
206 | case (MX_MANUFACT & 0xFF): | |
207 | info->flash_id = FLASH_MAN_MX; | |
208 | break; | |
209 | case (STM_MANUFACT & 0xFF): | |
210 | info->flash_id = FLASH_MAN_STM; | |
211 | break; | |
212 | default: | |
213 | info->flash_id = FLASH_UNKNOWN; | |
214 | info->sector_count = 0; | |
215 | info->size = 0; | |
216 | return (0); /* no or unknown flash */ | |
217 | } | |
218 | ||
219 | pid = caddr[1]; /* device ID */ | |
220 | switch (pid) { | |
221 | case (AMD_ID_LV400T & 0xFF): | |
222 | info->flash_id += FLASH_AM400T; | |
223 | info->sector_count = 11; | |
224 | info->size = 0x00080000; | |
225 | break; /* => 512 kB */ | |
226 | ||
227 | case (AMD_ID_LV400B & 0xFF): | |
228 | info->flash_id += FLASH_AM400B; | |
229 | info->sector_count = 11; | |
230 | info->size = 0x00080000; | |
231 | break; /* => 512 kB */ | |
232 | ||
233 | case (AMD_ID_LV800T & 0xFF): | |
234 | info->flash_id += FLASH_AM800T; | |
235 | info->sector_count = 19; | |
236 | info->size = 0x00100000; | |
237 | break; /* => 1 MB */ | |
238 | ||
239 | case (AMD_ID_LV800B & 0xFF): | |
240 | info->flash_id += FLASH_AM800B; | |
241 | info->sector_count = 19; | |
242 | info->size = 0x00100000; | |
243 | break; /* => 1 MB */ | |
244 | ||
245 | case (AMD_ID_LV160T & 0xFF): | |
246 | info->flash_id += FLASH_AM160T; | |
247 | info->sector_count = 35; | |
248 | info->size = 0x00200000; | |
249 | break; /* => 2 MB */ | |
250 | ||
251 | case (AMD_ID_LV160B & 0xFF): | |
252 | info->flash_id += FLASH_AM160B; | |
253 | info->sector_count = 35; | |
254 | info->size = 0x00200000; | |
255 | break; /* => 2 MB */ | |
256 | ||
257 | case (AMD_ID_LV040B & 0xFF): | |
258 | info->flash_id += FLASH_AM040; | |
259 | info->sector_count = 8; | |
260 | info->size = 0x00080000; | |
261 | break; | |
262 | ||
263 | case (STM_ID_M29W040B & 0xFF): | |
264 | info->flash_id += FLASH_AM040; | |
265 | info->sector_count = 8; | |
266 | info->size = 0x00080000; | |
267 | break; | |
268 | ||
269 | #if 0 /* enable when device IDs are available */ | |
270 | case (AMD_ID_LV320T & 0xFF): | |
271 | info->flash_id += FLASH_AM320T; | |
272 | info->sector_count = 67; | |
273 | info->size = 0x00400000; | |
274 | break; /* => 4 MB */ | |
275 | ||
276 | case (AMD_ID_LV320B & 0xFF): | |
277 | info->flash_id += FLASH_AM320B; | |
278 | info->sector_count = 67; | |
279 | info->size = 0x00400000; | |
280 | break; /* => 4 MB */ | |
281 | #endif | |
282 | default: | |
283 | info->flash_id = FLASH_UNKNOWN; | |
284 | return (0); /* => no or unknown flash */ | |
285 | ||
286 | } | |
287 | ||
288 | printf(" "); | |
289 | /* set up sector start address table */ | |
290 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
291 | for (i = 0; i < info->sector_count; i++) { | |
292 | info->start[i] = base + (i * 0x00010000); | |
293 | } | |
294 | } else if (info->flash_id & FLASH_BTYPE) { | |
295 | /* set sector offsets for bottom boot block type */ | |
296 | info->start[0] = base + 0x00000000; | |
297 | info->start[1] = base + 0x00004000; | |
298 | info->start[2] = base + 0x00006000; | |
299 | info->start[3] = base + 0x00008000; | |
300 | for (i = 4; i < info->sector_count; i++) { | |
301 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
302 | } | |
303 | } else { | |
304 | /* set sector offsets for top boot block type */ | |
305 | i = info->sector_count - 1; | |
306 | info->start[i--] = base + info->size - 0x00004000; | |
307 | info->start[i--] = base + info->size - 0x00006000; | |
308 | info->start[i--] = base + info->size - 0x00008000; | |
309 | for (; i >= 0; i--) { | |
310 | info->start[i] = base + i * 0x00010000; | |
311 | } | |
312 | } | |
313 | ||
314 | /* check for protected sectors */ | |
315 | for (i = 0; i < info->sector_count; i++) { | |
316 | /* read sector protection: D0 = 1 if protected */ | |
317 | caddr = (volatile unsigned char *)(info->start[i]); | |
318 | info->protect[i] = caddr[2] & 1; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Prevent writes to uninitialized FLASH. | |
323 | */ | |
324 | if (info->flash_id != FLASH_UNKNOWN) { | |
325 | caddr = (vu_char *) info->start[0]; | |
326 | ||
327 | caddr[0x0555] = 0xAA; | |
328 | caddr[0x02AA] = 0x55; | |
329 | caddr[0x0555] = 0xF0; | |
330 | ||
331 | udelay(20000); | |
332 | } | |
333 | ||
334 | return (info->size); | |
335 | } | |
336 | ||
337 | ||
338 | /*----------------------------------------------------------------------- | |
339 | */ | |
340 | ||
341 | int flash_erase(flash_info_t * info, int s_first, int s_last) | |
342 | { | |
343 | vu_char *addr = (vu_char *) (info->start[0]); | |
344 | int flag, prot, sect, l_sect; | |
345 | ulong start, now, last; | |
346 | ||
347 | if ((s_first < 0) || (s_first > s_last)) { | |
348 | if (info->flash_id == FLASH_UNKNOWN) { | |
349 | printf("- missing\n"); | |
350 | } else { | |
351 | printf("- no sectors to erase\n"); | |
352 | } | |
353 | return 1; | |
354 | } | |
355 | ||
356 | if ((info->flash_id == FLASH_UNKNOWN) || | |
357 | (info->flash_id > FLASH_AMD_COMP)) { | |
358 | printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); | |
359 | return 1; | |
360 | } | |
361 | ||
362 | prot = 0; | |
363 | for (sect = s_first; sect <= s_last; ++sect) { | |
364 | if (info->protect[sect]) { | |
365 | prot++; | |
366 | } | |
367 | } | |
368 | ||
369 | if (prot) { | |
370 | printf("- Warning: %d protected sectors will not be erased!\n", prot); | |
371 | } else { | |
372 | printf("\n"); | |
373 | } | |
374 | ||
375 | l_sect = -1; | |
376 | ||
377 | /* Disable interrupts which might cause a timeout here */ | |
378 | flag = disable_interrupts(); | |
379 | ||
380 | addr[0x0555] = 0xAA; | |
381 | addr[0x02AA] = 0x55; | |
382 | addr[0x0555] = 0x80; | |
383 | addr[0x0555] = 0xAA; | |
384 | addr[0x02AA] = 0x55; | |
385 | ||
386 | /* Start erase on unprotected sectors */ | |
387 | for (sect = s_first; sect <= s_last; sect++) { | |
388 | if (info->protect[sect] == 0) { /* not protected */ | |
389 | addr = (vu_char *) (info->start[sect]); | |
390 | addr[0] = 0x30; | |
391 | l_sect = sect; | |
392 | } | |
393 | } | |
394 | ||
395 | /* re-enable interrupts if necessary */ | |
396 | if (flag) | |
397 | enable_interrupts(); | |
398 | ||
399 | /* wait at least 80us - let's wait 1 ms */ | |
400 | udelay(1000); | |
401 | ||
402 | /* | |
403 | * We wait for the last triggered sector | |
404 | */ | |
405 | if (l_sect < 0) | |
406 | goto DONE; | |
407 | ||
408 | start = get_timer(0); | |
409 | last = start; | |
410 | addr = (vu_char *) (info->start[l_sect]); | |
411 | while ((addr[0] & 0x80) != 0x80) { | |
6d0f6bcf | 412 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
79fa88f3 WD |
413 | printf("Timeout\n"); |
414 | return 1; | |
415 | } | |
416 | /* show that we're waiting */ | |
417 | if ((now - last) > 1000) { /* every second */ | |
418 | putc('.'); | |
419 | last = now; | |
420 | } | |
421 | } | |
422 | ||
423 | DONE: | |
424 | /* reset to read mode */ | |
425 | addr = (vu_char *) info->start[0]; | |
426 | addr[0] = 0xF0; /* reset bank */ | |
427 | ||
428 | printf(" done\n"); | |
429 | return 0; | |
430 | } | |
431 | ||
432 | /*----------------------------------------------------------------------- | |
433 | * Copy memory to flash, returns: | |
434 | * 0 - OK | |
435 | * 1 - write timeout | |
436 | * 2 - Flash not erased | |
437 | */ | |
438 | ||
439 | int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) | |
440 | { | |
441 | int rc; | |
442 | ||
443 | while (cnt > 0) { | |
444 | if ((rc = write_byte(info, addr++, *src++)) != 0) { | |
445 | return (rc); | |
446 | } | |
447 | --cnt; | |
448 | } | |
449 | ||
450 | return (0); | |
451 | } | |
452 | ||
453 | /*----------------------------------------------------------------------- | |
454 | * Write a word to Flash, returns: | |
455 | * 0 - OK | |
456 | * 1 - write timeout | |
457 | * 2 - Flash not erased | |
458 | */ | |
459 | static int write_byte(flash_info_t * info, ulong dest, uchar data) | |
460 | { | |
461 | vu_char *addr = (vu_char *) (info->start[0]); | |
462 | ulong start; | |
463 | int flag; | |
464 | ||
465 | /* Check if Flash is (sufficiently) erased */ | |
466 | if ((*((vu_char *) dest) & data) != data) { | |
467 | return (2); | |
468 | } | |
469 | /* Disable interrupts which might cause a timeout here */ | |
470 | flag = disable_interrupts(); | |
471 | ||
472 | addr[0x0555] = 0xAA; | |
473 | addr[0x02AA] = 0x55; | |
474 | addr[0x0555] = 0xA0; | |
475 | ||
476 | *((vu_char *) dest) = data; | |
477 | ||
478 | /* re-enable interrupts if necessary */ | |
479 | if (flag) | |
480 | enable_interrupts(); | |
481 | ||
482 | /* data polling for D7 */ | |
483 | start = get_timer(0); | |
484 | while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) { | |
6d0f6bcf | 485 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
79fa88f3 WD |
486 | return (1); |
487 | } | |
488 | } | |
489 | return (0); | |
490 | } |