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ed247f48 WD |
1 | /* |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
ed247f48 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 */ |
ed247f48 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; |
ed247f48 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) |
ed247f48 | 32 | flash_info[i].flash_id = FLASH_UNKNOWN; |
ed247f48 WD |
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", size, size << 20); | |
38 | } | |
39 | ||
40 | /* Remap FLASH according to real size */ | |
6d0f6bcf JCPV |
41 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
42 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK)); | |
ed247f48 WD |
43 | |
44 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 45 | size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
ed247f48 | 46 | |
6d0f6bcf | 47 | flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
ed247f48 WD |
48 | |
49 | /* monitor protection ON by default */ | |
993cad93 | 50 | flash_protect(FLAG_PROTECT_SET, |
6d0f6bcf | 51 | CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, |
993cad93 WD |
52 | &flash_info[0]); |
53 | ||
54 | flash_protect ( FLAG_PROTECT_SET, | |
0e8d1586 | 55 | CONFIG_ENV_ADDR, |
dfcd7f21 | 56 | CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, |
993cad93 WD |
57 | &flash_info[0]); |
58 | ||
0e8d1586 | 59 | #ifdef CONFIG_ENV_ADDR_REDUND |
993cad93 | 60 | flash_protect ( FLAG_PROTECT_SET, |
0e8d1586 | 61 | CONFIG_ENV_ADDR_REDUND, |
dfcd7f21 | 62 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, |
993cad93 WD |
63 | &flash_info[0]); |
64 | #endif | |
65 | ||
ed247f48 WD |
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 | */ | |
107 | void flash_print_info(flash_info_t * info) | |
108 | { | |
109 | int i; | |
110 | ||
111 | if (info->flash_id == FLASH_UNKNOWN) { | |
112 | printf("missing or unknown FLASH type\n"); | |
113 | return; | |
114 | } | |
115 | ||
116 | switch (info->flash_id & FLASH_VENDMASK) { | |
117 | case FLASH_MAN_AMD: | |
118 | printf("AMD "); | |
119 | break; | |
120 | case FLASH_MAN_FUJ: | |
121 | printf("FUJITSU "); | |
122 | break; | |
123 | case FLASH_MAN_MX: | |
124 | printf("MXIC "); | |
125 | break; | |
126 | default: | |
127 | printf("Unknown Vendor "); | |
128 | break; | |
129 | } | |
130 | ||
131 | switch (info->flash_id & FLASH_TYPEMASK) { | |
132 | case FLASH_AM040: | |
133 | printf("AM29LV040B (4 Mbit, bottom boot sect)\n"); | |
134 | break; | |
135 | case FLASH_AM400B: | |
136 | printf("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
137 | break; | |
138 | case FLASH_AM400T: | |
139 | printf("AM29LV400T (4 Mbit, top boot sector)\n"); | |
140 | break; | |
141 | case FLASH_AM800B: | |
142 | printf("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
143 | break; | |
144 | case FLASH_AM800T: | |
145 | printf("AM29LV800T (8 Mbit, top boot sector)\n"); | |
146 | break; | |
147 | case FLASH_AM160B: | |
148 | printf("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
149 | break; | |
150 | case FLASH_AM160T: | |
151 | printf("AM29LV160T (16 Mbit, top boot sector)\n"); | |
152 | break; | |
153 | case FLASH_AM320B: | |
154 | printf("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
155 | break; | |
156 | case FLASH_AM320T: | |
157 | printf("AM29LV320T (32 Mbit, top boot sector)\n"); | |
158 | break; | |
159 | default: | |
160 | printf("Unknown Chip Type\n"); | |
161 | break; | |
162 | } | |
163 | ||
164 | printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); | |
165 | ||
166 | printf(" Sector Start Addresses:"); | |
167 | for (i = 0; i < info->sector_count; ++i) { | |
168 | if ((i % 5) == 0) | |
169 | printf("\n "); | |
170 | printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); | |
171 | } | |
172 | printf("\n"); | |
173 | } | |
174 | ||
175 | /*----------------------------------------------------------------------- | |
176 | */ | |
177 | ||
178 | ||
179 | /*----------------------------------------------------------------------- | |
180 | */ | |
181 | ||
182 | /* | |
183 | * The following code cannot be run from FLASH! | |
184 | */ | |
185 | ||
186 | static ulong flash_get_size(vu_long * addr, flash_info_t * info) | |
187 | { | |
188 | short i; | |
189 | uchar mid; | |
190 | uchar pid; | |
191 | vu_char *caddr = (vu_char *) addr; | |
192 | ulong base = (ulong) addr; | |
193 | ||
194 | ||
195 | /* Write auto select command: read Manufacturer ID */ | |
196 | caddr[0x0555] = 0xAA; | |
197 | caddr[0x02AA] = 0x55; | |
198 | caddr[0x0555] = 0x90; | |
199 | ||
200 | mid = caddr[0]; | |
201 | switch (mid) { | |
202 | case (AMD_MANUFACT & 0xFF): | |
203 | info->flash_id = FLASH_MAN_AMD; | |
204 | break; | |
205 | case (FUJ_MANUFACT & 0xFF): | |
206 | info->flash_id = FLASH_MAN_FUJ; | |
207 | break; | |
208 | case (MX_MANUFACT & 0xFF): | |
209 | info->flash_id = FLASH_MAN_MX; | |
210 | break; | |
211 | case (STM_MANUFACT & 0xFF): | |
212 | info->flash_id = FLASH_MAN_STM; | |
213 | break; | |
214 | default: | |
215 | info->flash_id = FLASH_UNKNOWN; | |
216 | info->sector_count = 0; | |
217 | info->size = 0; | |
218 | return (0); /* no or unknown flash */ | |
219 | } | |
220 | ||
221 | pid = caddr[1]; /* device ID */ | |
222 | switch (pid) { | |
223 | case (AMD_ID_LV400T & 0xFF): | |
224 | info->flash_id += FLASH_AM400T; | |
225 | info->sector_count = 11; | |
226 | info->size = 0x00080000; | |
227 | break; /* => 512 kB */ | |
228 | ||
229 | case (AMD_ID_LV400B & 0xFF): | |
230 | info->flash_id += FLASH_AM400B; | |
231 | info->sector_count = 11; | |
232 | info->size = 0x00080000; | |
233 | break; /* => 512 kB */ | |
234 | ||
235 | case (AMD_ID_LV800T & 0xFF): | |
236 | info->flash_id += FLASH_AM800T; | |
237 | info->sector_count = 19; | |
238 | info->size = 0x00100000; | |
239 | break; /* => 1 MB */ | |
240 | ||
241 | case (AMD_ID_LV800B & 0xFF): | |
242 | info->flash_id += FLASH_AM800B; | |
243 | info->sector_count = 19; | |
244 | info->size = 0x00100000; | |
245 | break; /* => 1 MB */ | |
246 | ||
247 | case (AMD_ID_LV160T & 0xFF): | |
248 | info->flash_id += FLASH_AM160T; | |
249 | info->sector_count = 35; | |
250 | info->size = 0x00200000; | |
251 | break; /* => 2 MB */ | |
252 | ||
253 | case (AMD_ID_LV160B & 0xFF): | |
254 | info->flash_id += FLASH_AM160B; | |
255 | info->sector_count = 35; | |
256 | info->size = 0x00200000; | |
257 | break; /* => 2 MB */ | |
258 | ||
259 | case (AMD_ID_LV040B & 0xFF): | |
260 | info->flash_id += FLASH_AM040; | |
261 | info->sector_count = 8; | |
262 | info->size = 0x00080000; | |
263 | break; | |
264 | ||
265 | case (STM_ID_M29W040B & 0xFF): | |
266 | info->flash_id += FLASH_AM040; | |
267 | info->sector_count = 8; | |
268 | info->size = 0x00080000; | |
269 | break; | |
270 | ||
271 | #if 0 /* enable when device IDs are available */ | |
272 | case (AMD_ID_LV320T & 0xFF): | |
273 | info->flash_id += FLASH_AM320T; | |
274 | info->sector_count = 67; | |
275 | info->size = 0x00400000; | |
276 | break; /* => 4 MB */ | |
277 | ||
278 | case (AMD_ID_LV320B & 0xFF): | |
279 | info->flash_id += FLASH_AM320B; | |
280 | info->sector_count = 67; | |
281 | info->size = 0x00400000; | |
282 | break; /* => 4 MB */ | |
283 | #endif | |
284 | default: | |
285 | info->flash_id = FLASH_UNKNOWN; | |
286 | return (0); /* => no or unknown flash */ | |
287 | ||
288 | } | |
289 | ||
290 | printf(" "); | |
291 | /* set up sector start address table */ | |
292 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
293 | for (i = 0; i < info->sector_count; i++) { | |
294 | info->start[i] = base + (i * 0x00010000); | |
295 | } | |
296 | } else if (info->flash_id & FLASH_BTYPE) { | |
297 | /* set sector offsets for bottom boot block type */ | |
298 | info->start[0] = base + 0x00000000; | |
299 | info->start[1] = base + 0x00004000; | |
300 | info->start[2] = base + 0x00006000; | |
301 | info->start[3] = base + 0x00008000; | |
302 | for (i = 4; i < info->sector_count; i++) { | |
303 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
304 | } | |
305 | } else { | |
306 | /* set sector offsets for top boot block type */ | |
307 | i = info->sector_count - 1; | |
308 | info->start[i--] = base + info->size - 0x00004000; | |
309 | info->start[i--] = base + info->size - 0x00006000; | |
310 | info->start[i--] = base + info->size - 0x00008000; | |
311 | for (; i >= 0; i--) { | |
312 | info->start[i] = base + i * 0x00010000; | |
313 | } | |
314 | } | |
315 | ||
316 | /* check for protected sectors */ | |
317 | for (i = 0; i < info->sector_count; i++) { | |
318 | /* read sector protection: D0 = 1 if protected */ | |
319 | caddr = (volatile unsigned char *)(info->start[i]); | |
320 | info->protect[i] = caddr[2] & 1; | |
321 | } | |
322 | ||
323 | /* | |
324 | * Prevent writes to uninitialized FLASH. | |
325 | */ | |
326 | if (info->flash_id != FLASH_UNKNOWN) { | |
327 | caddr = (vu_char *) info->start[0]; | |
328 | ||
329 | caddr[0x0555] = 0xAA; | |
330 | caddr[0x02AA] = 0x55; | |
331 | caddr[0x0555] = 0xF0; | |
332 | ||
333 | udelay(20000); | |
334 | } | |
335 | ||
336 | return (info->size); | |
337 | } | |
338 | ||
339 | ||
340 | /*----------------------------------------------------------------------- | |
341 | */ | |
342 | ||
343 | int flash_erase(flash_info_t * info, int s_first, int s_last) | |
344 | { | |
345 | vu_char *addr = (vu_char *) (info->start[0]); | |
346 | int flag, prot, sect, l_sect; | |
347 | ulong start, now, last; | |
348 | ||
349 | if ((s_first < 0) || (s_first > s_last)) { | |
350 | if (info->flash_id == FLASH_UNKNOWN) { | |
351 | printf("- missing\n"); | |
352 | } else { | |
353 | printf("- no sectors to erase\n"); | |
354 | } | |
355 | return 1; | |
356 | } | |
357 | ||
358 | if ((info->flash_id == FLASH_UNKNOWN) || | |
359 | (info->flash_id > FLASH_AMD_COMP)) { | |
360 | printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); | |
361 | return 1; | |
362 | } | |
363 | ||
364 | prot = 0; | |
365 | for (sect = s_first; sect <= s_last; ++sect) { | |
366 | if (info->protect[sect]) { | |
367 | prot++; | |
368 | } | |
369 | } | |
370 | ||
371 | if (prot) { | |
372 | printf("- Warning: %d protected sectors will not be erased!\n", prot); | |
373 | } else { | |
374 | printf("\n"); | |
375 | } | |
376 | ||
377 | l_sect = -1; | |
378 | ||
379 | /* Disable interrupts which might cause a timeout here */ | |
380 | flag = disable_interrupts(); | |
381 | ||
382 | addr[0x0555] = 0xAA; | |
383 | addr[0x02AA] = 0x55; | |
384 | addr[0x0555] = 0x80; | |
385 | addr[0x0555] = 0xAA; | |
386 | addr[0x02AA] = 0x55; | |
387 | ||
388 | /* Start erase on unprotected sectors */ | |
389 | for (sect = s_first; sect <= s_last; sect++) { | |
390 | if (info->protect[sect] == 0) { /* not protected */ | |
391 | addr = (vu_char *) (info->start[sect]); | |
392 | addr[0] = 0x30; | |
393 | l_sect = sect; | |
394 | } | |
395 | } | |
396 | ||
397 | /* re-enable interrupts if necessary */ | |
398 | if (flag) | |
399 | enable_interrupts(); | |
400 | ||
401 | /* wait at least 80us - let's wait 1 ms */ | |
402 | udelay(1000); | |
403 | ||
404 | /* | |
405 | * We wait for the last triggered sector | |
406 | */ | |
407 | if (l_sect < 0) | |
408 | goto DONE; | |
409 | ||
410 | start = get_timer(0); | |
411 | last = start; | |
412 | addr = (vu_char *) (info->start[l_sect]); | |
413 | while ((addr[0] & 0x80) != 0x80) { | |
6d0f6bcf | 414 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
ed247f48 WD |
415 | printf("Timeout\n"); |
416 | return 1; | |
417 | } | |
418 | /* show that we're waiting */ | |
419 | if ((now - last) > 1000) { /* every second */ | |
420 | putc('.'); | |
421 | last = now; | |
422 | } | |
423 | } | |
424 | ||
425 | DONE: | |
426 | /* reset to read mode */ | |
427 | addr = (vu_char *) info->start[0]; | |
428 | addr[0] = 0xF0; /* reset bank */ | |
429 | ||
430 | printf(" done\n"); | |
431 | return 0; | |
432 | } | |
433 | ||
434 | /*----------------------------------------------------------------------- | |
435 | * Copy memory to flash, returns: | |
436 | * 0 - OK | |
437 | * 1 - write timeout | |
438 | * 2 - Flash not erased | |
439 | */ | |
440 | ||
441 | int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) | |
442 | { | |
443 | int rc; | |
444 | ||
445 | while (cnt > 0) { | |
446 | if ((rc = write_byte(info, addr++, *src++)) != 0) { | |
447 | return (rc); | |
448 | } | |
449 | --cnt; | |
450 | } | |
451 | ||
452 | return (0); | |
453 | } | |
454 | ||
455 | /*----------------------------------------------------------------------- | |
456 | * Write a word to Flash, returns: | |
457 | * 0 - OK | |
458 | * 1 - write timeout | |
459 | * 2 - Flash not erased | |
460 | */ | |
461 | static int write_byte(flash_info_t * info, ulong dest, uchar data) | |
462 | { | |
463 | vu_char *addr = (vu_char *) (info->start[0]); | |
464 | ulong start; | |
465 | int flag; | |
466 | ||
467 | /* Check if Flash is (sufficiently) erased */ | |
468 | if ((*((vu_char *) dest) & data) != data) { | |
469 | return (2); | |
470 | } | |
471 | /* Disable interrupts which might cause a timeout here */ | |
472 | flag = disable_interrupts(); | |
473 | ||
474 | addr[0x0555] = 0xAA; | |
475 | addr[0x02AA] = 0x55; | |
476 | addr[0x0555] = 0xA0; | |
477 | ||
478 | *((vu_char *) dest) = data; | |
479 | ||
480 | /* re-enable interrupts if necessary */ | |
481 | if (flag) | |
482 | enable_interrupts(); | |
483 | ||
484 | /* data polling for D7 */ | |
485 | start = get_timer(0); | |
486 | while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) { | |
6d0f6bcf | 487 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
ed247f48 WD |
488 | return (1); |
489 | } | |
490 | } | |
491 | return (0); | |
492 | } | |
493 | ||
494 | /*----------------------------------------------------------------------- | |
495 | */ |