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wdenk7ebf7442002-11-02 23:17:16 +00001/*
2 * (C) Copyright 2001
3 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
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 * flash.c - flash support for the 512k, 8bit boot flash on the GEVB
26 * most of this file was based on the existing U-Boot
27 * flash drivers.
28 */
29
30#include <common.h>
31#include <mpc8xx.h>
32#include <galileo/gt64260R.h>
33#include <galileo/memory.h>
34#include "intel_flash.h"
35
36#define FLASH_ROM 0xFFFD /* unknown flash type */
37#define FLASH_RAM 0xFFFE /* unknown flash type */
38#define FLASH_MAN_UNKNOWN 0xFFFF0000
39
40/* #define DEBUG */
41/* #define FLASH_ID_OVERRIDE */ /* Hack to set type to 040B if ROM emulator is installed.
42 * Can be used to program a ROM in circuit if a programmer
43 * is not available by swapping the rom out. */
44
45/* Intel flash commands */
46int flash_erase_intel(flash_info_t *info, int s_first, int s_last);
47int write_word_intel(bank_addr_t addr, bank_word_t value);
48
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020049flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
wdenk7ebf7442002-11-02 23:17:16 +000050
51/*-----------------------------------------------------------------------
52 * Functions
53 */
54static ulong flash_get_size (int portwidth, vu_long *addr, flash_info_t *info);
55static int write_word (flash_info_t *info, ulong dest, ulong data);
56static void flash_get_offsets (ulong base, flash_info_t *info);
57
58/*-----------------------------------------------------------------------
59 */
60
61unsigned long
62flash_init (void)
63{
64 unsigned int i;
65 unsigned long size_b0 = 0, size_b1 = 0;
66 unsigned long base, flash_size;
67
68 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020069 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenk7ebf7442002-11-02 23:17:16 +000070 flash_info[i].flash_id = FLASH_UNKNOWN;
71 }
72
73 /* the boot flash */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020074 base = CONFIG_SYS_FLASH_BASE;
75#ifndef CONFIG_SYS_BOOT_FLASH_WIDTH
76#define CONFIG_SYS_BOOT_FLASH_WIDTH 1
wdenk12f34242003-09-02 22:48:03 +000077#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020078 size_b0 = flash_get_size(CONFIG_SYS_BOOT_FLASH_WIDTH, (vu_long *)base,
wdenk12f34242003-09-02 22:48:03 +000079 &flash_info[0]);
wdenk7ebf7442002-11-02 23:17:16 +000080
wdenk2d5b5612003-10-14 19:43:55 +000081#ifndef CONFIG_P3G4
82 printf("[");
83 print_size (size_b0, "");
84 printf("@%08lX] ", base);
85#endif
wdenk7ebf7442002-11-02 23:17:16 +000086
87 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
88 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n",
89 base, size_b0, size_b0<<20);
90 }
91
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020092 base = memoryGetDeviceBaseAddress(CONFIG_SYS_EXTRA_FLASH_DEVICE);
93 for(i=1;i<CONFIG_SYS_MAX_FLASH_BANKS;i++) {
94 unsigned long size = flash_get_size(CONFIG_SYS_EXTRA_FLASH_WIDTH, (vu_long *)base, &flash_info[i]);
wdenk7ebf7442002-11-02 23:17:16 +000095
wdenk2d5b5612003-10-14 19:43:55 +000096#ifndef CONFIG_P3G4
97 printf("[");
98 print_size (size, "");
wdenk5fa66df2003-10-29 23:18:55 +000099 printf("@%08lX] ", base);
wdenk2d5b5612003-10-14 19:43:55 +0000100#endif
wdenk7ebf7442002-11-02 23:17:16 +0000101
102 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
103 if(i==1) {
104 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n",
105 base, size_b1, size_b1<<20);
106 }
107 break;
108 }
109 size_b1+=size;
110 base+=size;
111 }
112
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200113#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
wdenk12f34242003-09-02 22:48:03 +0000114 /* monitor protection ON by default */
115 flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200116 CONFIG_SYS_MONITOR_BASE,
117 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
118 flash_get_info(CONFIG_SYS_MONITOR_BASE));
wdenk12f34242003-09-02 22:48:03 +0000119#endif
120
Jean-Christophe PLAGNIOL-VILLARD5a1aceb2008-09-10 22:48:04 +0200121#ifdef CONFIG_ENV_IS_IN_FLASH
wdenk12f34242003-09-02 22:48:03 +0000122 /* ENV protection ON by default */
123 flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200124 CONFIG_ENV_ADDR,
125 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
126 flash_get_info(CONFIG_ENV_ADDR));
wdenk12f34242003-09-02 22:48:03 +0000127#endif
128
wdenk7ebf7442002-11-02 23:17:16 +0000129 flash_size = size_b0 + size_b1;
130 return flash_size;
131}
132
133/*-----------------------------------------------------------------------
134 */
135static void
136flash_get_offsets (ulong base, flash_info_t *info)
137{
138 int i;
139 int sector_size;
140
141 if(!info->sector_count) return;
142
143 /* set up sector start address table */
144 switch(info->flash_id & FLASH_TYPEMASK) {
145 case FLASH_AM040:
146 case FLASH_28F128J3A:
147 case FLASH_28F640J3A:
148 case FLASH_RAM:
149 /* this chip has uniformly spaced sectors */
150 sector_size=info->size/info->sector_count;
151 for (i = 0; i < info->sector_count; i++)
152 info->start[i] = base + (i * sector_size);
153 break;
154 default:
155 if (info->flash_id & FLASH_BTYPE) {
156 /* set sector offsets for bottom boot block type */
157 info->start[0] = base + 0x00000000;
158 info->start[1] = base + 0x00008000;
159 info->start[2] = base + 0x0000C000;
160 info->start[3] = base + 0x00010000;
161 for (i = 4; i < info->sector_count; i++) {
162 info->start[i] = base + (i * 0x00020000) - 0x00060000;
163 }
164 } else {
165 /* set sector offsets for top boot block type */
166 i = info->sector_count - 1;
167 info->start[i--] = base + info->size - 0x00008000;
168 info->start[i--] = base + info->size - 0x0000C000;
169 info->start[i--] = base + info->size - 0x00010000;
170 for (; i >= 0; i--) {
171 info->start[i] = base + i * 0x00020000;
172 }
173 }
174 }
175}
176
177/*-----------------------------------------------------------------------
178 */
wdenk12f34242003-09-02 22:48:03 +0000179
Wolfgang Denkb8845ab2009-02-18 21:35:38 +0100180flash_info_t *flash_get_info(ulong base)
wdenk12f34242003-09-02 22:48:03 +0000181{
182 int i;
183 flash_info_t * info;
184
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200185 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i ++) {
wdenk12f34242003-09-02 22:48:03 +0000186 info = & flash_info[i];
187 if (info->start[0] <= base && base <= info->start[0] + info->size - 1)
188 break;
189 }
190
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200191 return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info;
wdenk12f34242003-09-02 22:48:03 +0000192}
193
194/*-----------------------------------------------------------------------
195 */
wdenk7ebf7442002-11-02 23:17:16 +0000196void
197flash_print_info (flash_info_t *info)
198{
199 int i;
200
201 if (info->flash_id == FLASH_UNKNOWN) {
202 printf ("missing or unknown FLASH type\n");
203 return;
204 }
205
206 switch (info->flash_id & FLASH_VENDMASK) {
207 case FLASH_MAN_AMD: printf ("AMD "); break;
208 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
209 case FLASH_MAN_INTEL: printf ("INTEL "); break;
210 default: printf ("Unknown Vendor "); break;
211 }
212
213 switch (info->flash_id & FLASH_TYPEMASK) {
214 case FLASH_AM040:
215 printf ("AM29LV040B (4 Mbit, bottom boot sect)\n");
216 break;
217 case FLASH_AM400B:
218 printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
219 break;
220 case FLASH_AM400T:
221 printf ("AM29LV400T (4 Mbit, top boot sector)\n");
222 break;
223 case FLASH_AM800B:
224 printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
225 break;
226 case FLASH_AM800T:
227 printf ("AM29LV800T (8 Mbit, top boot sector)\n");
228 break;
229 case FLASH_AM160B:
230 printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
231 break;
232 case FLASH_AM160T:
233 printf ("AM29LV160T (16 Mbit, top boot sector)\n");
234 break;
235 case FLASH_AM320B:
236 printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
237 break;
238 case FLASH_AM320T:
239 printf ("AM29LV320T (32 Mbit, top boot sector)\n");
240 break;
241 case FLASH_28F640J3A:
242 printf ("28F640J3A (64 Mbit)\n");
243 break;
244 case FLASH_28F128J3A:
245 printf ("28F128J3A (128 Mbit)\n");
246 break;
247 case FLASH_ROM:
248 printf ("ROM\n");
249 break;
250 case FLASH_RAM:
251 printf ("RAM\n");
252 break;
253 default:
254 printf ("Unknown Chip Type\n");
255 break;
256 }
257
258 puts (" Size: ");
259 print_size (info->size, "");
260 printf (" in %d Sectors\n", info->sector_count);
261
262 printf (" Sector Start Addresses:");
263 for (i=0; i<info->sector_count; ++i) {
264 if ((i % 5) == 0)
265 printf ("\n ");
266 printf (" %08lX%s",
267 info->start[i],
268 info->protect[i] ? " (RO)" : " "
269 );
270 }
271 printf ("\n");
272 return;
273}
274
275/*-----------------------------------------------------------------------
276 */
277
278
279/*-----------------------------------------------------------------------
280 */
281
282/*
283 * The following code cannot be run from FLASH!
284 */
285
286static inline void flash_cmd(int width, volatile unsigned char *addr, int offset, unsigned char cmd)
287{
wdenk8bde7f72003-06-27 21:31:46 +0000288 /* supports 1x8, 1x16, and 2x16 */
289 /* 2x8 and 4x8 are not supported */
wdenk7ebf7442002-11-02 23:17:16 +0000290 if(width==4) {
291 /* assuming chips are in 16 bit mode */
292 /* 2x16 */
293 unsigned long cmd32=(cmd<<16)|cmd;
294 *(volatile unsigned long *)(addr+offset*2)=cmd32;
wdenk12f34242003-09-02 22:48:03 +0000295 } else if (width == 2) {
296 /* 1x16 */
297 *(volatile unsigned short *)((unsigned short*)addr+offset)=cmd;
wdenk7ebf7442002-11-02 23:17:16 +0000298 } else {
wdenk12f34242003-09-02 22:48:03 +0000299 /* 1x8 */
wdenk7ebf7442002-11-02 23:17:16 +0000300 *(volatile unsigned char *)(addr+offset)=cmd;
301 }
302}
303
304static ulong
305flash_get_size (int portwidth, vu_long *addr, flash_info_t *info)
306{
307 short i;
308 volatile unsigned char *caddr = (unsigned char *)addr;
309 volatile unsigned short *saddr = (unsigned short *)addr;
310 volatile unsigned long *laddr = (unsigned long *)addr;
311 char old[2], save;
312 ulong id, manu, base = (ulong)addr;
313
314 info->portwidth=portwidth;
315
316 save = *caddr;
317
318 flash_cmd(portwidth,caddr,0,0xf0);
319 flash_cmd(portwidth,caddr,0,0xf0);
320
321 udelay(10);
322
323 old[0] = caddr[0];
324 old[1] = caddr[1];
325
326
327 if(old[0]!=0xf0) {
328 flash_cmd(portwidth,caddr,0,0xf0);
329 flash_cmd(portwidth,caddr,0,0xf0);
330
331 udelay(10);
332
333 if(*caddr==0xf0) {
334 /* this area is ROM */
335 *caddr=save;
336#ifndef FLASH_ID_OVERRIDE
337 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
338 info->sector_count = 8;
339 info->size = 0x80000;
340#else
341 info->flash_id = FLASH_MAN_AMD + FLASH_AM040;
342 info->sector_count = 8;
343 info->size = 0x80000;
344 info->chipwidth=1;
345#endif
346 flash_get_offsets(base, info);
347 return info->size;
348 }
349 } else {
350 *caddr=0;
351
352 udelay(10);
353
354 if(*caddr==0) {
355 /* this area is RAM */
356 *caddr=save;
357 info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN;
358 info->sector_count = 8;
359 info->size = 0x80000;
360 flash_get_offsets(base, info);
361 return info->size;
362 }
363 flash_cmd(portwidth,caddr,0,0xf0);
364
365 udelay(10);
366 }
367
368 /* Write auto select command: read Manufacturer ID */
369 flash_cmd(portwidth,caddr,0x555,0xAA);
370 flash_cmd(portwidth,caddr,0x2AA,0x55);
371 flash_cmd(portwidth,caddr,0x555,0x90);
372
373 udelay(10);
374
375 if ((caddr[0] == old[0]) &&
376 (caddr[1] == old[1])) {
377
378 /* this area is ROM */
379#ifndef FLASH_ID_OVERRIDE
380 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
381 info->sector_count = 8;
382 info->size = 0x80000;
383#else
384 info->flash_id = FLASH_MAN_AMD + FLASH_AM040;
385 info->sector_count = 8;
386 info->size = 0x80000;
387 info->chipwidth=1;
388#endif
389 flash_get_offsets(base, info);
390 return info->size;
391#ifdef DEBUG
392 } else {
393 printf("%px%d: %02x:%02x -> %02x:%02x\n",
394 caddr, portwidth, old[0], old[1],
395 caddr[0], caddr[1]);
396#endif
397 }
398
399 switch(portwidth) {
400 case 1:
401 manu = caddr[0];
402 manu |= manu<<16;
403 id = caddr[1];
404 break;
405 case 2:
406 manu = saddr[0];
407 manu |= manu<<16;
408 id = saddr[1];
409 id |= id<<16;
410 break;
411 case 4:
412 manu = laddr[0];
413 id = laddr[1];
414 break;
415 default:
416 id = manu = -1;
417 break;
418 }
419
420#ifdef DEBUG
421 printf("\n%08lx:%08lx:%08lx\n", base, manu, id);
422 printf("%08lx %08lx %08lx %08lx\n",
423 laddr[0],laddr[1],laddr[2],laddr[3]);
424#endif
425
426 switch (manu) {
427 case AMD_MANUFACT:
428 info->flash_id = FLASH_MAN_AMD;
429 break;
430 case FUJ_MANUFACT:
431 info->flash_id = FLASH_MAN_FUJ;
432 break;
433 case INTEL_MANUFACT:
434 info->flash_id = FLASH_MAN_INTEL;
435 break;
436 default:
437 printf("Unknown Mfr [%08lx]:%08lx\n", manu, id);
438 info->flash_id = FLASH_UNKNOWN;
439 info->sector_count = 0;
440 info->size = 0;
441 return (0); /* no or unknown flash */
442 }
443
444 switch (id) {
445 case AMD_ID_LV400T:
446 info->flash_id += FLASH_AM400T;
447 info->sector_count = 11;
448 info->size = 0x00100000;
449 info->chipwidth=1;
450 break; /* => 1 MB */
451
452 case AMD_ID_LV400B:
453 info->flash_id += FLASH_AM400B;
454 info->sector_count = 11;
455 info->size = 0x00100000;
456 info->chipwidth=1;
457 break; /* => 1 MB */
458
459 case AMD_ID_LV800T:
460 info->flash_id += FLASH_AM800T;
461 info->sector_count = 19;
462 info->size = 0x00200000;
463 info->chipwidth=1;
464 break; /* => 2 MB */
465
466 case AMD_ID_LV800B:
467 info->flash_id += FLASH_AM800B;
468 info->sector_count = 19;
469 info->size = 0x00200000;
470 info->chipwidth=1;
471 break; /* => 2 MB */
472
473 case AMD_ID_LV160T:
474 info->flash_id += FLASH_AM160T;
475 info->sector_count = 35;
476 info->size = 0x00400000;
477 info->chipwidth=1;
478 break; /* => 4 MB */
479
480 case AMD_ID_LV160B:
481 info->flash_id += FLASH_AM160B;
482 info->sector_count = 35;
483 info->size = 0x00400000;
484 info->chipwidth=1;
485 break; /* => 4 MB */
486#if 0 /* enable when device IDs are available */
487 case AMD_ID_LV320T:
488 info->flash_id += FLASH_AM320T;
489 info->sector_count = 67;
490 info->size = 0x00800000;
491 break; /* => 8 MB */
492
493 case AMD_ID_LV320B:
494 info->flash_id += FLASH_AM320B;
495 info->sector_count = 67;
496 info->size = 0x00800000;
497 break; /* => 8 MB */
498#endif
499 case AMD_ID_LV040B:
500 info->flash_id += FLASH_AM040;
501 info->sector_count = 8;
502 info->size = 0x80000;
503 info->chipwidth=1;
504 break;
505
506 case INTEL_ID_28F640J3A:
507 info->flash_id += FLASH_28F640J3A;
508 info->sector_count = 64;
509 info->size = 128*1024 * 64; /* 128kbytes x 64 blocks */
510 info->chipwidth=2;
511 if(portwidth==4) info->size*=2; /* 2x16 */
512 break;
513
514 case INTEL_ID_28F128J3A:
515 info->flash_id += FLASH_28F128J3A;
516 info->sector_count = 128;
517 info->size = 128*1024 * 128; /* 128kbytes x 128 blocks */
518 info->chipwidth=2;
519 if(portwidth==4) info->size*=2; /* 2x16 */
520 break;
521
522 default:
523 printf("Unknown id %lx:[%lx]\n", manu, id);
524 info->flash_id = FLASH_UNKNOWN;
525 info->chipwidth=1;
526 return (0); /* => no or unknown flash */
527
528 }
529
530 flash_get_offsets(base, info);
531
532#if 0
533 /* set up sector start address table */
534 if (info->flash_id & FLASH_AM040) {
535 /* this chip has uniformly spaced sectors */
536 for (i = 0; i < info->sector_count; i++)
537 info->start[i] = base + (i * 0x00010000);
538
539 } else if (info->flash_id & FLASH_BTYPE) {
540 /* set sector offsets for bottom boot block type */
541 info->start[0] = base + 0x00000000;
542 info->start[1] = base + 0x00008000;
543 info->start[2] = base + 0x0000C000;
544 info->start[3] = base + 0x00010000;
545 for (i = 4; i < info->sector_count; i++) {
546 info->start[i] = base + (i * 0x00020000) - 0x00060000;
547 }
548 } else {
549 /* set sector offsets for top boot block type */
550 i = info->sector_count - 1;
551 info->start[i--] = base + info->size - 0x00008000;
552 info->start[i--] = base + info->size - 0x0000C000;
553 info->start[i--] = base + info->size - 0x00010000;
554 for (; i >= 0; i--) {
555 info->start[i] = base + i * 0x00020000;
556 }
557 }
558#endif
559
560 /* check for protected sectors */
561 for (i = 0; i < info->sector_count; i++) {
562 /* read sector protection at sector address, (A7 .. A0)=0x02 */
563 /* D0 = 1 if protected */
564 caddr = (volatile unsigned char *)(info->start[i]);
565 saddr = (volatile unsigned short *)(info->start[i]);
566 laddr = (volatile unsigned long *)(info->start[i]);
567 if(portwidth==1)
568 info->protect[i] = caddr[2] & 1;
569 else if(portwidth==2)
570 info->protect[i] = saddr[2] & 1;
571 else
572 info->protect[i] = laddr[2] & 1;
573 }
574
575 /*
576 * Prevent writes to uninitialized FLASH.
577 */
578 if (info->flash_id != FLASH_UNKNOWN) {
579 caddr = (volatile unsigned char *)info->start[0];
580
581 flash_cmd(portwidth,caddr,0,0xF0); /* reset bank */
582 }
583
584 return (info->size);
585}
586
587/* TODO: 2x16 unsupported */
588int
589flash_erase (flash_info_t *info, int s_first, int s_last)
590{
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200591 volatile unsigned char *addr = (uchar *)(info->start[0]);
wdenk7ebf7442002-11-02 23:17:16 +0000592 int flag, prot, sect, l_sect;
593 ulong start, now, last;
594
595 /* TODO: 2x16 unsupported */
596 if(info->portwidth==4) return 1;
597
598 if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1;
599 if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
600 for (sect = s_first; sect<=s_last; sect++) {
601 int sector_size=info->size/info->sector_count;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200602 addr = (uchar *)(info->start[sect]);
wdenk7ebf7442002-11-02 23:17:16 +0000603 memset((void *)addr, 0, sector_size);
604 }
605 return 0;
606 }
607
608 if ((s_first < 0) || (s_first > s_last)) {
609 if (info->flash_id == FLASH_UNKNOWN) {
610 printf ("- missing\n");
611 } else {
612 printf ("- no sectors to erase\n");
613 }
614 return 1;
615 }
616
617 if ((info->flash_id&FLASH_VENDMASK) == FLASH_MAN_INTEL) {
618 return flash_erase_intel(info,
619 (unsigned short)s_first,
620 (unsigned short)s_last);
621 }
622
623#if 0
624 if ((info->flash_id == FLASH_UNKNOWN) ||
625 (info->flash_id > FLASH_AMD_COMP)) {
626 printf ("Can't erase unknown flash type %08lx - aborted\n",
627 info->flash_id);
628 return 1;
629 }
630#endif
631
632 prot = 0;
633 for (sect=s_first; sect<=s_last; ++sect) {
634 if (info->protect[sect]) {
635 prot++;
636 }
637 }
638
639 if (prot) {
640 printf ("- Warning: %d protected sectors will not be erased!\n",
641 prot);
642 } else {
643 printf ("\n");
644 }
645
646 l_sect = -1;
647
648 /* Disable interrupts which might cause a timeout here */
649 flag = disable_interrupts();
650
651 flash_cmd(info->portwidth,addr,0x555,0xAA);
652 flash_cmd(info->portwidth,addr,0x2AA,0x55);
653 flash_cmd(info->portwidth,addr,0x555,0x80);
654 flash_cmd(info->portwidth,addr,0x555,0xAA);
655 flash_cmd(info->portwidth,addr,0x2AA,0x55);
656
657 /* Start erase on unprotected sectors */
658 for (sect = s_first; sect<=s_last; sect++) {
659 if (info->protect[sect] == 0) { /* not protected */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200660 addr = (uchar *)(info->start[sect]);
wdenk7ebf7442002-11-02 23:17:16 +0000661 flash_cmd(info->portwidth,addr,0,0x30);
662 l_sect = sect;
663 }
664 }
665
666 /* re-enable interrupts if necessary */
667 if (flag)
668 enable_interrupts();
669
670 /* wait at least 80us - let's wait 1 ms */
671 udelay (1000);
672
673 /*
674 * We wait for the last triggered sector
675 */
676 if (l_sect < 0)
677 goto DONE;
678
679 start = get_timer (0);
680 last = start;
681 addr = (volatile unsigned char *)(info->start[l_sect]);
682 /* broken for 2x16: TODO */
683 while ((addr[0] & 0x80) != 0x80) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200684 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenk7ebf7442002-11-02 23:17:16 +0000685 printf ("Timeout\n");
686 return 1;
687 }
688 /* show that we're waiting */
689 if ((now - last) > 1000) { /* every second */
690 putc ('.');
691 last = now;
692 }
693 }
694
695DONE:
696 /* reset to read mode */
697 addr = (volatile unsigned char *)info->start[0];
698 flash_cmd(info->portwidth,addr,0,0xf0);
699 flash_cmd(info->portwidth,addr,0,0xf0);
700
701 printf (" done\n");
702 return 0;
703}
704
705/*-----------------------------------------------------------------------
706 * Copy memory to flash, returns:
707 * 0 - OK
708 * 1 - write timeout
709 * 2 - Flash not erased
710 */
711
712/* broken for 2x16: TODO */
713int
714write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
715{
716 ulong cp, wp, data;
717 int i, l, rc;
718
719 if(info->portwidth==4) return 1;
720
721 if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 0;
722 if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
723 memcpy((void *)addr, src, cnt);
724 return 0;
725 }
726
727 wp = (addr & ~3); /* get lower word aligned address */
728
729 /*
730 * handle unaligned start bytes
731 */
732 if ((l = addr - wp) != 0) {
733 data = 0;
734 for (i=0, cp=wp; i<l; ++i, ++cp) {
735 data = (data << 8) | (*(uchar *)cp);
736 }
737 for (; i<4 && cnt>0; ++i) {
738 data = (data << 8) | *src++;
739 --cnt;
740 ++cp;
741 }
742 for (; cnt==0 && i<4; ++i, ++cp) {
743 data = (data << 8) | (*(uchar *)cp);
744 }
745
746 if ((rc = write_word(info, wp, data)) != 0) {
747 return (rc);
748 }
749 wp += 4;
750 }
751
752 /*
753 * handle word aligned part
754 */
755 while (cnt >= 4) {
756 data = 0;
757 for (i=0; i<4; ++i) {
758 data = (data << 8) | *src++;
759 }
760 if ((rc = write_word(info, wp, data)) != 0) {
761 return (rc);
762 }
763 wp += 4;
764 cnt -= 4;
765 }
766
767 if (cnt == 0) {
768 return (0);
769 }
770
771 /*
772 * handle unaligned tail bytes
773 */
774 data = 0;
775 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
776 data = (data << 8) | *src++;
777 --cnt;
778 }
779 for (; i<4; ++i, ++cp) {
780 data = (data << 8) | (*(uchar *)cp);
781 }
782
783 return (write_word(info, wp, data));
784}
785
786/*-----------------------------------------------------------------------
787 * Write a word to Flash, returns:
788 * 0 - OK
789 * 1 - write timeout
790 * 2 - Flash not erased
791 */
792/* broken for 2x16: TODO */
793static int
794write_word (flash_info_t *info, ulong dest, ulong data)
795{
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200796 volatile unsigned char *addr = (uchar *)(info->start[0]);
wdenk7ebf7442002-11-02 23:17:16 +0000797 ulong start;
798 int flag, i;
799
800 if(info->portwidth==4) return 1;
801
802 if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1;
803 if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
804 *(unsigned long *)dest=data;
805 return 0;
806 }
807 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
808 unsigned short low = data & 0xffff;
809 unsigned short hi = (data >> 16) & 0xffff;
810 int ret = write_word_intel((bank_addr_t)dest, hi);
811
812 if (!ret) ret = write_word_intel((bank_addr_t)(dest+2), low);
813
814 return ret;
815 }
816
817 /* Check if Flash is (sufficiently) erased */
818 if ((*((vu_long *)dest) & data) != data) {
819 return (2);
820 }
821 /* Disable interrupts which might cause a timeout here */
822 flag = disable_interrupts();
823
824 /* first, perform an unlock bypass command to speed up flash writes */
825 addr[0x555] = 0xAA;
826 addr[0x2AA] = 0x55;
827 addr[0x555] = 0x20;
828
829 /* write each byte out */
830 for (i = 0; i < 4; i++) {
831 char *data_ch = (char *)&data;
832 addr[0] = 0xA0;
833 *(((char *)dest)+i) = data_ch[i];
834 udelay(10); /* XXX */
835 }
836
837 /* we're done, now do an unlock bypass reset */
838 addr[0] = 0x90;
839 addr[0] = 0x00;
840
841 /* re-enable interrupts if necessary */
842 if (flag)
843 enable_interrupts();
844
845 /* data polling for D7 */
846 start = get_timer (0);
847 while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200848 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk7ebf7442002-11-02 23:17:16 +0000849 return (1);
850 }
851 }
852 return (0);
853}