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wdenk79fa88f2004-06-07 23:46:25 +00001/*
2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
wdenk79fa88f2004-06-07 23:46:25 +00006 */
7
8#include <common.h>
9#include <mpc8xx.h>
10
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020011flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
wdenk79fa88f2004-06-07 23:46:25 +000012
13/*-----------------------------------------------------------------------
14 * Functions
15 */
16static ulong flash_get_size(vu_long * addr, flash_info_t * info);
17static int write_byte(flash_info_t * info, ulong dest, uchar data);
18static void flash_get_offsets(ulong base, flash_info_t * info);
19
20/*-----------------------------------------------------------------------
21 */
22
23unsigned long flash_init(void)
24{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020025 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
wdenk79fa88f2004-06-07 23:46:25 +000026 volatile memctl8xx_t *memctl = &immap->im_memctl;
27 unsigned long size;
28 int i;
29
30 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020031 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
wdenk79fa88f2004-06-07 23:46:25 +000032 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 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020042 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));
wdenk79fa88f2004-06-07 23:46:25 +000044
45 /* Re-do sizing to get full correct info */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020046 size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]);
wdenk79fa88f2004-06-07 23:46:25 +000047
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020048 flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
wdenk79fa88f2004-06-07 23:46:25 +000049
50 /* monitor protection ON by default */
51 flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020052 CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
wdenk79fa88f2004-06-07 23:46:25 +000053 &flash_info[0]);
54
55 flash_protect ( FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020056 CONFIG_ENV_ADDR,
Wolfgang Denkdfcd7f22009-05-15 00:16:03 +020057 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
wdenk79fa88f2004-06-07 23:46:25 +000058 &flash_info[0]);
59
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020060#ifdef CONFIG_ENV_ADDR_REDUND
wdenk79fa88f2004-06-07 23:46:25 +000061 flash_protect ( FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020062 CONFIG_ENV_ADDR_REDUND,
Wolfgang Denkdfcd7f22009-05-15 00:16:03 +020063 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
wdenk79fa88f2004-06-07 23:46:25 +000064 &flash_info[0]);
65#endif
66
67 flash_info[0].size = size;
68
69 return (size);
70}
71
72/*-----------------------------------------------------------------------
73 */
74static 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 */
106void 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
185static 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
341int 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) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200412 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenk79fa88f2004-06-07 23:46:25 +0000413 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
423DONE:
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
439int 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 */
459static 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)) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200485 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk79fa88f2004-06-07 23:46:25 +0000486 return (1);
487 }
488 }
489 return (0);
490}