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wdenk3a473b22004-01-03 00:43:19 +00001/*
2 * (C) Copyright 2001
3 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
wdenk3a473b22004-01-03 00:43:19 +00006 */
7
8/*
9 * flash.c - flash support for the 512k, 8bit boot flash
Wolfgang Denk53677ef2008-05-20 16:00:29 +020010 and the 8MB 32bit extra flash on the DB64360
wdenk3a473b22004-01-03 00:43:19 +000011 * most of this file was based on the existing U-Boot
12 * flash drivers.
13 *
14 * written or collected and sometimes rewritten by
15 * Ingo Assmus <ingo.assmus@keymile.com>
16 *
17 */
18
19#include <common.h>
20#include <mpc8xx.h>
21#include "../include/mv_gen_reg.h"
22#include "../include/memory.h"
23#include "intel_flash.h"
24
25#define FLASH_ROM 0xFFFD /* unknown flash type */
26#define FLASH_RAM 0xFFFE /* unknown flash type */
27#define FLASH_MAN_UNKNOWN 0xFFFF0000
28
29/* #define DEBUG */
30
31/* Intel flash commands */
32int flash_erase_intel (flash_info_t * info, int s_first, int s_last);
33int write_word_intel (bank_addr_t addr, bank_word_t value);
34
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020035flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
wdenk3a473b22004-01-03 00:43:19 +000036
37/*-----------------------------------------------------------------------
38 * Functions
39 */
40static ulong flash_get_size (int portwidth, vu_long * addr,
41 flash_info_t * info);
42static int write_word (flash_info_t * info, ulong dest, ulong data);
43static void flash_get_offsets (ulong base, flash_info_t * info);
44
45/*-----------------------------------------------------------------------
46 */
47
48unsigned long flash_init (void)
49{
50 unsigned int i;
51 unsigned long size_b0 = 0, size_b1 = 0;
52 unsigned long base, flash_size;
53
54 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020055 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenk3a473b22004-01-03 00:43:19 +000056 flash_info[i].flash_id = FLASH_UNKNOWN;
57 }
58
59 /* the boot flash */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020060 base = CONFIG_SYS_FLASH_BASE;
wdenk3a473b22004-01-03 00:43:19 +000061 size_b0 =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020062 flash_get_size (CONFIG_SYS_BOOT_FLASH_WIDTH, (vu_long *) base,
wdenk3a473b22004-01-03 00:43:19 +000063 &flash_info[0]);
64
65 printf ("[%ldkB@%lx] ", size_b0 / 1024, base);
66
67 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
68 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b0, size_b0 << 20);
69 }
70
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020071 base = memoryGetDeviceBaseAddress (CONFIG_SYS_EXTRA_FLASH_DEVICE);
wdenk3a473b22004-01-03 00:43:19 +000072/* base = memoryGetDeviceBaseAddress(DEV_CS3_BASE_ADDR);*/
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020073 for (i = 1; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
wdenk3a473b22004-01-03 00:43:19 +000074 unsigned long size =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020075 flash_get_size (CONFIG_SYS_EXTRA_FLASH_WIDTH,
wdenk3a473b22004-01-03 00:43:19 +000076 (vu_long *) base, &flash_info[i]);
77
78 printf ("[%ldMB@%lx] ", size >> 20, base);
79
80 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
81 if (i == 1) {
82 printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b1, size_b1 << 20);
83 }
84 break;
85 }
86 size_b1 += size;
87 base += size;
88 }
89
90 flash_size = size_b0 + size_b1;
91 return flash_size;
92}
93
94/*-----------------------------------------------------------------------
95 */
96static void flash_get_offsets (ulong base, flash_info_t * info)
97{
98 int i;
99 int sector_size;
100
101 if (!info->sector_count)
102 return;
103
104 /* set up sector start address table */
105 switch (info->flash_id & FLASH_TYPEMASK) {
106 case FLASH_AM040:
107 case FLASH_28F128J3A:
108 case FLASH_28F640J3A:
109 case FLASH_RAM:
110 /* this chip has uniformly spaced sectors */
111 sector_size = info->size / info->sector_count;
112 for (i = 0; i < info->sector_count; i++)
113 info->start[i] = base + (i * sector_size);
114 break;
115 default:
116 if (info->flash_id & FLASH_BTYPE) {
117 /* set sector offsets for bottom boot block type */
118 info->start[0] = base + 0x00000000;
119 info->start[1] = base + 0x00008000;
120 info->start[2] = base + 0x0000C000;
121 info->start[3] = base + 0x00010000;
122 for (i = 4; i < info->sector_count; i++) {
123 info->start[i] =
124 base + (i * 0x00020000) - 0x00060000;
125 }
126 } else {
127 /* set sector offsets for top boot block type */
128 i = info->sector_count - 1;
129 info->start[i--] = base + info->size - 0x00008000;
130 info->start[i--] = base + info->size - 0x0000C000;
131 info->start[i--] = base + info->size - 0x00010000;
132 for (; i >= 0; i--) {
133 info->start[i] = base + i * 0x00020000;
134 }
135 }
136 }
137}
138
139/*-----------------------------------------------------------------------
140 */
141void flash_print_info (flash_info_t * info)
142{
143 int i;
144
145 if (info->flash_id == FLASH_UNKNOWN) {
146 printf ("missing or unknown FLASH type\n");
147 return;
148 }
149
150 switch (info->flash_id & FLASH_VENDMASK) {
151 case FLASH_MAN_STM:
152 printf ("STM ");
153 break;
154 case FLASH_MAN_AMD:
155 printf ("AMD ");
156 break;
157 case FLASH_MAN_FUJ:
158 printf ("FUJITSU ");
159 break;
160 case FLASH_MAN_INTEL:
161 printf ("INTEL ");
162 break;
163 default:
164 printf ("Unknown Vendor ");
165 break;
166 }
167
168 switch (info->flash_id & FLASH_TYPEMASK) {
169 case FLASH_AM040:
170 printf ("AM29LV040B (4 Mbit, bottom boot sect)\n");
171 break;
172 case FLASH_AM400B:
173 printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
174 break;
175 case FLASH_AM400T:
176 printf ("AM29LV400T (4 Mbit, top boot sector)\n");
177 break;
178 case FLASH_AM800B:
179 printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
180 break;
181 case FLASH_AM800T:
182 printf ("AM29LV800T (8 Mbit, top boot sector)\n");
183 break;
184 case FLASH_AM160B:
185 printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
186 break;
187 case FLASH_AM160T:
188 printf ("AM29LV160T (16 Mbit, top boot sector)\n");
189 break;
190 case FLASH_AM320B:
191 printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
192 break;
193 case FLASH_AM320T:
194 printf ("AM29LV320T (32 Mbit, top boot sector)\n");
195 break;
196 case FLASH_28F640J3A:
197 printf ("28F640J3A (64 Mbit)\n");
198 break;
199 case FLASH_28F128J3A:
200 printf ("28F128J3A (128 Mbit)\n");
201 break;
202 case FLASH_ROM:
203 printf ("ROM\n");
204 break;
205 case FLASH_RAM:
206 printf ("RAM\n");
207 break;
208 default:
209 printf ("Unknown Chip Type\n");
210 break;
211 }
212
213 if ((info->size >> 20) > 0) {
214 printf (" Size: %ld MB in %d Sectors\n",
215 info->size >> 20, info->sector_count);
216 } else {
217 printf (" Size: %ld kB in %d Sectors\n",
218 info->size >> 10, info->sector_count);
219 }
220
221 printf (" Sector Start Addresses:");
222 for (i = 0; i < info->sector_count; ++i) {
223 if ((i % 5) == 0)
224 printf ("\n ");
225 printf (" %08lX%s",
226 info->start[i], info->protect[i] ? " (RO)" : " ");
227 }
228 printf ("\n");
229 return;
230}
231
232/*-----------------------------------------------------------------------
233 */
234
235
236/*-----------------------------------------------------------------------
237 */
238
239/*
240 * The following code cannot be run from FLASH!
241 */
242
243static inline void flash_cmd (int width, volatile unsigned char *addr,
244 int offset, unsigned char cmd)
245{
246 /* supports 1x8, 1x16, and 2x16 */
247 /* 2x8 and 4x8 are not supported */
248 if (width == 4) {
249 /* assuming chips are in 16 bit mode */
250 /* 2x16 */
251 unsigned long cmd32 = (cmd << 16) | cmd;
252
253 *(volatile unsigned long *) (addr + offset * 2) = cmd32;
254 } else {
255 /* 1x16 or 1x8 */
256 *(volatile unsigned char *) (addr + offset) = cmd;
257 }
258}
259
260static ulong
261flash_get_size (int portwidth, vu_long * addr, flash_info_t * info)
262{
263 short i;
264 volatile unsigned char *caddr = (unsigned char *) addr;
265 volatile unsigned short *saddr = (unsigned short *) addr;
266 volatile unsigned long *laddr = (unsigned long *) addr;
267 char old[2], save;
268 ulong id = 0, manu = 0, base = (ulong) addr;
269
270#ifdef DEBUG
271 printf ("%s: enter\n", __FUNCTION__);
272#endif
273 info->portwidth = portwidth;
274
275 save = *caddr;
276
277 flash_cmd (portwidth, caddr, 0, 0xf0);
278 flash_cmd (portwidth, caddr, 0, 0xf0);
279
280 udelay (10);
281
282 old[0] = caddr[0];
283 old[1] = caddr[1];
284
285
286 if (old[0] != 0xf0) {
287 flash_cmd (portwidth, caddr, 0, 0xf0);
288 flash_cmd (portwidth, caddr, 0, 0xf0);
289
290 udelay (10);
291
292 if (*caddr == 0xf0) {
293 /* this area is ROM */
294 *caddr = save;
295 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
296 info->sector_count = 8;
297 info->size = 0x80000;
298 flash_get_offsets (base, info);
299 return info->size;
300 }
301 } else {
302 *caddr = 0;
303
304 udelay (10);
305
306 if (*caddr == 0) {
307 /* this area is RAM */
308 *caddr = save;
309 info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN;
310 info->sector_count = 8;
311 info->size = 0x80000;
312 flash_get_offsets (base, info);
313 return info->size;
314 }
315 flash_cmd (portwidth, caddr, 0, 0xf0);
316
317 udelay (10);
318 }
319
320 /* Write auto select command: read Manufacturer ID */
321 flash_cmd (portwidth, caddr, 0x555, 0xAA);
322 flash_cmd (portwidth, caddr, 0x2AA, 0x55);
323 flash_cmd (portwidth, caddr, 0x555, 0x90);
324
325 udelay (10);
326
327 if ((caddr[0] == old[0]) && (caddr[1] == old[1])) {
328
329 /* this area is ROM */
330 info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
331 info->sector_count = 8;
332 info->size = 0x80000;
333 flash_get_offsets (base, info);
334 return info->size;
335#ifdef DEBUG
336 } else {
337 printf ("%px%d: %02x:%02x -> %02x:%02x\n",
338 caddr, portwidth, old[0], old[1], caddr[0], caddr[1]);
339#endif
340 }
341
342 switch (portwidth) {
343 case 1:
344 manu = caddr[0];
345 manu |= manu << 16;
346 id = caddr[1];
347 break;
348 case 2:
349 manu = saddr[0];
350 manu |= manu << 16;
351 id = saddr[1];
352 id |= id << 16;
353 break;
354 case 4:
355 manu = laddr[0];
356 id = laddr[1];
357 break;
358 }
359
360#ifdef DEBUG
361 flash_cmd (portwidth, caddr, 0, 0xf0);
362
363 printf ("\n%08lx:%08lx:%08lx\n", base, manu, id);
364 printf ("%08lx %08lx %08lx %08lx\n",
365 laddr[0], laddr[1], laddr[2], laddr[3]);
366#endif
367
368 switch (manu) {
369 case STM_MANUFACT:
370 info->flash_id = FLASH_MAN_STM;
371 break;
372 case AMD_MANUFACT:
373 info->flash_id = FLASH_MAN_AMD;
374 break;
375 case FUJ_MANUFACT:
376 info->flash_id = FLASH_MAN_FUJ;
377 break;
378 case INTEL_MANUFACT:
379 info->flash_id = FLASH_MAN_INTEL;
380 break;
381 default:
382 flash_cmd (portwidth, caddr, 0, 0xf0);
383
384 printf ("Unknown Mfr [%08lx]:%08lx\n", manu, id);
385 info->flash_id = FLASH_UNKNOWN;
386 info->sector_count = 0;
387 info->size = 0;
388 return (0); /* no or unknown flash */
389 }
390
391 switch (id) {
392 case AMD_ID_LV400T:
393 info->flash_id += FLASH_AM400T;
394 info->sector_count = 11;
395 info->size = 0x00100000;
396 info->chipwidth = 1;
397 break; /* => 1 MB */
398
399 case AMD_ID_LV400B:
400 info->flash_id += FLASH_AM400B;
401 info->sector_count = 11;
402 info->size = 0x00100000;
403 info->chipwidth = 1;
404 break; /* => 1 MB */
405
406 case AMD_ID_LV800T:
407 info->flash_id += FLASH_AM800T;
408 info->sector_count = 19;
409 info->size = 0x00200000;
410 info->chipwidth = 1;
411 break; /* => 2 MB */
412
413 case AMD_ID_LV800B:
414 info->flash_id += FLASH_AM800B;
415 info->sector_count = 19;
416 info->size = 0x00200000;
417 info->chipwidth = 1;
418 break; /* => 2 MB */
419
420 case AMD_ID_LV160T:
421 info->flash_id += FLASH_AM160T;
422 info->sector_count = 35;
423 info->size = 0x00400000;
424 info->chipwidth = 1;
425 break; /* => 4 MB */
426
427 case AMD_ID_LV160B:
428 info->flash_id += FLASH_AM160B;
429 info->sector_count = 35;
430 info->size = 0x00400000;
431 info->chipwidth = 1;
432 break; /* => 4 MB */
433#if 0 /* enable when device IDs are available */
434 case AMD_ID_LV320T:
435 info->flash_id += FLASH_AM320T;
436 info->sector_count = 67;
437 info->size = 0x00800000;
438 break; /* => 8 MB */
439
440 case AMD_ID_LV320B:
441 info->flash_id += FLASH_AM320B;
442 info->sector_count = 67;
443 info->size = 0x00800000;
444 break; /* => 8 MB */
445#endif
446 case AMD_ID_LV040B:
447 info->flash_id += FLASH_AM040;
448 info->sector_count = 8;
449 info->size = 0x80000;
450 info->chipwidth = 1;
451 break; /* => 512 kB */
452
453 case INTEL_ID_28F640J3A:
454 info->flash_id += FLASH_28F640J3A;
455 info->sector_count = 64;
456 info->size = 128 * 1024 * 64; /* 128kbytes x 64 blocks */
457 info->chipwidth = 2;
458 if (portwidth == 4)
459 info->size *= 2; /* 2x16 */
460 break;
461
462 case INTEL_ID_28F128J3A:
463 info->flash_id += FLASH_28F128J3A;
464 info->sector_count = 128;
465 info->size = 128 * 1024 * 128; /* 128kbytes x 128 blocks */
466 info->chipwidth = 2;
467 if (portwidth == 4)
468 info->size *= 2; /* 2x16 */
469 break;
470
471 default:
472 flash_cmd (portwidth, caddr, 0, 0xf0);
473
474 printf ("Unknown id %lx:[%lx]\n", manu, id);
475 info->flash_id = FLASH_UNKNOWN;
476 info->chipwidth = 1;
477 return (0); /* => no or unknown flash */
478
479 }
480
481 flash_get_offsets (base, info);
482
483
484 /* check for protected sectors */
485 for (i = 0; i < info->sector_count; i++) {
486 /* read sector protection at sector address, (A7 .. A0)=0x02 */
487 /* D0 = 1 if protected */
488 caddr = (volatile unsigned char *) (info->start[i]);
489 saddr = (volatile unsigned short *) (info->start[i]);
490 laddr = (volatile unsigned long *) (info->start[i]);
491 if (portwidth == 1)
492 info->protect[i] = caddr[2] & 1;
493 else if (portwidth == 2)
494 info->protect[i] = saddr[2] & 1;
495 else
496 info->protect[i] = laddr[2] & 1;
497 }
498
499 /*
500 * Prevent writes to uninitialized FLASH.
501 */
502 if (info->flash_id != FLASH_UNKNOWN) {
503 caddr = (volatile unsigned char *) info->start[0];
504
505 flash_cmd (portwidth, caddr, 0, 0xF0); /* reset bank */
506 }
507
508 return (info->size);
509}
510
511int flash_erase (flash_info_t * info, int s_first, int s_last)
512{
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200513 volatile unsigned char *addr = (uchar *) (info->start[0]);
wdenk3a473b22004-01-03 00:43:19 +0000514 int flag, prot, sect, l_sect;
515 ulong start, now, last;
516
517/* modified to support 2x16 Intel flash */
518/* Note that the code will not exit on a flash erasure error or timeout */
519/* but will print and error message and continue processing sectors */
520/* until they are all erased. */
521/* 10-16-2002 P. Marchese */
522 ulong mask;
523 int timeout;
524
525 if (info->portwidth == 4)
526/* {
527 printf ("- Warning: erasing of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
528 return 1;
529 }*/
530 {
531 /* make sure it's Intel flash */
532 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
533 /* yup! it's an Intel flash */
534 /* is it 16-bits wide? */
535 if (info->chipwidth == 2) {
536 /* yup! it's 16-bits wide */
537 /* are there any sectors to process? */
538 if ((s_first < 0) || (s_first > s_last)) {
539 printf ("Error: There are no sectors to erase\n");
540 printf ("Either sector %d is less than zero\n", s_first);
541 printf ("or sector %d is greater than sector %d\n", s_first, s_last);
542 return 1;
543 }
544 /* check for protected sectors */
545 prot = 0;
546 for (sect = s_first; sect <= s_last; ++sect)
547 if (info->protect[sect])
548 prot++;
549 /* if variable "prot" is nonzero, there are protected sectors */
550 if (prot)
551 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
552 /* reset the flash */
553 flash_cmd (info->portwidth, addr, 0,
554 CHIP_CMD_RST);
555 /* Disable interrupts which might cause a timeout here */
556 flag = disable_interrupts ();
557 /* Clear the status register */
558 flash_cmd (info->portwidth, addr, 0,
559 CHIP_CMD_CLR_STAT);
560 flash_cmd (info->portwidth, addr, 0,
561 CHIP_CMD_RST);
562 /* Start erase on unprotected sectors */
563 for (sect = s_first; sect <= s_last; sect++) {
564 /* is the sector unprotected? */
565 if (info->protect[sect] == 0) { /* not protected */
566 /* issue the single block erase command, 0x20 */
567 flash_cmd (info->portwidth,
568 (volatile unsigned
569 char *) info->
570 start[sect], 0,
571 CHIP_CMD_ERASE1);
572 /* issue the erase confirm command, 0xD0 */
573 flash_cmd (info->portwidth,
574 (volatile unsigned
575 char *) info->
576 start[sect], 0,
577 CHIP_CMD_ERASE2);
578 l_sect = sect;
579 /* re-enable interrupts if necessary */
580 if (flag)
581 enable_interrupts ();
582 /* poll for erasure completion */
583 /* put flash into read status mode by writing 0x70 to it */
584 flash_cmd (info->portwidth,
585 addr, 0,
586 CHIP_CMD_RD_STAT);
587 /* setup the status register mask */
588 mask = CHIP_STAT_RDY |
589 (CHIP_STAT_RDY << 16);
590 /* init. the timeout counter */
591 start = get_timer (0);
592 /* keep looping while the flash is not ready */
593 /* exit the loop by timing out or the flash */
594 /* becomes ready again */
595 timeout = 0;
596 while ((*
597 (volatile unsigned
598 long *) info->
599 start[sect] & mask) !=
600 mask) {
601 /* has the timeout limit been reached? */
602 if (get_timer (start)
603 >
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200604 CONFIG_SYS_FLASH_ERASE_TOUT)
wdenk3a473b22004-01-03 00:43:19 +0000605 {
606 /* timeout limit reached */
607 printf ("Time out limit reached erasing sector at address %08lx\n", info->start[sect]);
608 printf ("Continuing with next sector\n");
609 timeout = 1;
610 goto timed_out_error;
611 }
612 /* put flash into read status mode by writing 0x70 to it */
613 flash_cmd (info->
614 portwidth,
615 addr, 0,
616 CHIP_CMD_RD_STAT);
617 }
618 /* did we timeout? */
619 timed_out_error:if (timeout == 0)
620 {
621 /* didn't timeout, so check the status register */
622 /* create the status mask to check for errors */
623 mask = CHIP_STAT_ECLBS;
624 mask = mask | (mask <<
625 16);
626 /* put flash into read status mode by writing 0x70 to it */
627 flash_cmd (info->
628 portwidth,
629 addr, 0,
630 CHIP_CMD_RD_STAT);
631 /* are there any errors? */
632 if ((*
633 (volatile
634 unsigned long *)
635 info->
636 start[sect] &
637 mask) != 0) {
638 /* We got an erasure error */
639 printf ("Flash erasure error at address 0x%08lx\n", info->start[sect]);
640 printf ("Continuing with next sector\n");
641 /* reset the flash */
642 flash_cmd
643 (info->
644 portwidth,
645 addr,
646 0,
647 CHIP_CMD_RST);
648 }
649 }
650 /* erasure completed without errors */
651 /* reset the flash */
652 flash_cmd (info->portwidth,
653 addr, 0,
654 CHIP_CMD_RST);
655 } /* end if not protected */
656 } /* end for loop */
657 printf ("Flash erasure done\n");
658 return 0;
659 } else {
660 /* The Intel flash is not 16-bit wide */
661 /* print and error message and return */
662 /* NOTE: you can add routines here to handle other size flash */
663 printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
664 printf ("The erasure code only handles Intel 16-bit wide flash memory\n");
665 return 1;
666 }
667 } else {
668 /* Not Intel flash so return an error as a write timeout */
669 /* NOTE: if it's another type flash, stick its routine here */
670 printf ("Error: The flash device is not Intel type\n");
671 printf ("The erasure code only supports Intel flash in a 32-bit port width\n");
672 return 1;
673 }
674 }
675
676 /* end 32-bit wide flash code */
677 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
678 return 1; /* Rom can not be erased */
679 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { /* RAM just copy 0s to RAM */
680 for (sect = s_first; sect <= s_last; sect++) {
681 int sector_size = info->size / info->sector_count;
682
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200683 addr = (uchar *) (info->start[sect]);
wdenk3a473b22004-01-03 00:43:19 +0000684 memset ((void *) addr, 0, sector_size);
685 }
686 return 0;
687 }
688
689 if ((s_first < 0) || (s_first > s_last)) {
690 if (info->flash_id == FLASH_UNKNOWN) {
691 printf ("- missing\n");
692 } else {
693 printf ("- no sectors to erase\n");
694 }
695 return 1;
696 }
697
698 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { /* Intel works spezial */
699 return flash_erase_intel (info,
700 (unsigned short) s_first,
701 (unsigned short) s_last);
702 }
703#if 0
704 if ((info->flash_id == FLASH_UNKNOWN) || /* Flash is unknown to PPCBoot */
705 (info->flash_id > FLASH_AMD_COMP)) {
706 printf ("Can't erase unknown flash type %08lx - aborted\n",
707 info->flash_id);
708 return 1;
709 }
710#endif
711
712 prot = 0;
713 for (sect = s_first; sect <= s_last; ++sect) {
714 if (info->protect[sect]) {
715 prot++;
716 }
717 }
718
719 if (prot) {
720 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
721 } else {
722 printf ("\n");
723 }
724
725 l_sect = -1;
726
727 /* Disable interrupts which might cause a timeout here */
728 flag = disable_interrupts ();
729
730 flash_cmd (info->portwidth, addr, 0x555, 0xAA); /* start erase routine */
731 flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
732 flash_cmd (info->portwidth, addr, 0x555, 0x80);
733 flash_cmd (info->portwidth, addr, 0x555, 0xAA);
734 flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
735
736 /* Start erase on unprotected sectors */
737 for (sect = s_first; sect <= s_last; sect++) {
738 if (info->protect[sect] == 0) { /* not protected */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200739 addr = (uchar *) (info->start[sect]);
wdenk3a473b22004-01-03 00:43:19 +0000740 flash_cmd (info->portwidth, addr, 0, 0x30);
741 l_sect = sect;
742 }
743 }
744
745 /* re-enable interrupts if necessary */
746 if (flag)
747 enable_interrupts ();
748
749 /* wait at least 80us - let's wait 1 ms */
750 udelay (1000);
751
752 /*
753 * We wait for the last triggered sector
754 */
755 if (l_sect < 0)
756 goto DONE;
757
758 start = get_timer (0);
759 last = start;
760 addr = (volatile unsigned char *) (info->start[l_sect]);
761 /* broken for 2x16: TODO */
762 while ((addr[0] & 0x80) != 0x80) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200763 if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenk3a473b22004-01-03 00:43:19 +0000764 printf ("Timeout\n");
765 return 1;
766 }
767 /* show that we're waiting */
768 if ((now - last) > 1000) { /* every second */
769 putc ('.');
770 last = now;
771 }
772 }
773
774 DONE:
775 /* reset to read mode */
776 addr = (volatile unsigned char *) info->start[0];
777 flash_cmd (info->portwidth, addr, 0, 0xf0);
778 flash_cmd (info->portwidth, addr, 0, 0xf0);
779
780 printf (" done\n");
781 return 0;
782}
783
784/*-----------------------------------------------------------------------
785 * Copy memory to flash, returns:
786 * 0 - OK
787 * 1 - write timeout
788 * 2 - Flash not erased
789 */
790
791/* broken for 2x16: TODO */
792int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
793{
794 ulong cp, wp, data;
795 int i, l, rc;
796
797/* Commented out since the below code should work for 32-bit(2x 16 flash) */
798/* 10-16-2002 P. Marchese */
799/* if(info->portwidth==4) return 1; */
800/* if(info->portwidth==4) {
801 printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
802 return 1;
803 }*/
804
805 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
806 return 0;
807 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
808 memcpy ((void *) addr, src, cnt);
809 return 0;
810 }
811
812 wp = (addr & ~3); /* get lower word aligned address */
813
814 /*
815 * handle unaligned start bytes
816 */
817 if ((l = addr - wp) != 0) {
818 data = 0;
819 for (i = 0, cp = wp; i < l; ++i, ++cp) {
820 data = (data << 8) | (*(uchar *) cp);
821 }
822 for (; i < 4 && cnt > 0; ++i) {
823 data = (data << 8) | *src++;
824 --cnt;
825 ++cp;
826 }
827 for (; cnt == 0 && i < 4; ++i, ++cp) {
828 data = (data << 8) | (*(uchar *) cp);
829 }
830
831 if ((rc = write_word (info, wp, data)) != 0) {
832 return (rc);
833 }
834 wp += 4;
835 }
836
837 /*
838 * handle word aligned part
839 */
840 while (cnt >= 4) {
841 data = 0;
842 for (i = 0; i < 4; ++i) {
843 data = (data << 8) | *src++;
844 }
845 if ((rc = write_word (info, wp, data)) != 0) {
846 return (rc);
847 }
848 wp += 4;
849 cnt -= 4;
850 }
851
852 if (cnt == 0) {
853 return (0);
854 }
855
856 /*
857 * handle unaligned tail bytes
858 */
859 data = 0;
860 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
861 data = (data << 8) | *src++;
862 --cnt;
863 }
864 for (; i < 4; ++i, ++cp) {
865 data = (data << 8) | (*(uchar *) cp);
866 }
867
868 return (write_word (info, wp, data));
869}
870
871/*-----------------------------------------------------------------------
872 * Write a word to Flash, returns:
873 * 0 - OK
874 * 1 - write timeout
875 * 2 - Flash not erased
876 */
877/* broken for 2x16: TODO */
878static int write_word (flash_info_t * info, ulong dest, ulong data)
879{
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200880 volatile unsigned char *addr = (uchar *) (info->start[0]);
wdenk3a473b22004-01-03 00:43:19 +0000881 ulong start;
882 int flag, i;
883 ulong mask;
884
885/* modified so that it handles 32-bit(2x16 Intel flash programming */
886/* 10-16-2002 P. Marchese */
887
888 if (info->portwidth == 4)
889/* {
890 printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
891 return 1;
892 }*/
893 {
894 /* make sure it's Intel flash */
895 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
896 /* yup! it's an Intel flash */
897 /* is it 16-bits wide? */
898 if (info->chipwidth == 2) {
899 /* yup! it's 16-bits wide */
900 /* so we know how to program it */
901 /* reset the flash */
902 flash_cmd (info->portwidth, addr, 0,
903 CHIP_CMD_RST);
904 /* Disable interrupts which might cause a timeout here */
905 flag = disable_interrupts ();
906 /* Clear the status register */
907 flash_cmd (info->portwidth, addr, 0,
908 CHIP_CMD_CLR_STAT);
909 flash_cmd (info->portwidth, addr, 0,
910 CHIP_CMD_RST);
911 /* 1st cycle of word/byte program */
912 /* write 0x40 to the location to program */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200913 flash_cmd (info->portwidth, (uchar *) dest, 0,
wdenk3a473b22004-01-03 00:43:19 +0000914 CHIP_CMD_PROG);
915 /* 2nd cycle of word/byte program */
916 /* write the data to the destination address */
917 *(ulong *) dest = data;
918 /* re-enable interrupts if necessary */
919 if (flag)
920 enable_interrupts ();
921 /* setup the status register mask */
922 mask = CHIP_STAT_RDY | (CHIP_STAT_RDY << 16);
923 /* put flash into read status mode by writing 0x70 to it */
924 flash_cmd (info->portwidth, addr, 0,
925 CHIP_CMD_RD_STAT);
926 /* init. the timeout counter */
927 start = get_timer (0);
928 /* keep looping while the flash is not ready */
929 /* exit the loop by timing out or the flash */
930 /* becomes ready again */
931/* 11-13-2002 Paul Marchese */
932/* modified while loop conditional statement */
933/* because we were always timing out. */
934/* there is a type mismatch, "addr[0]" */
935/* returns a byte but "mask" is a 32-bit value */
936 while ((*(volatile unsigned long *) info->
937 start[0] & mask) != mask)
938/* original code */
939/* while (addr[0] & mask) != mask) */
940 {
941 /* has the timeout limit been reached? */
942 if (get_timer (start) >
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200943 CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk3a473b22004-01-03 00:43:19 +0000944 /* timeout limit reached */
945 printf ("Time out limit reached programming address %08lx with data %08lx\n", dest, data);
946 /* reset the flash */
947 flash_cmd (info->portwidth,
948 addr, 0,
949 CHIP_CMD_RST);
950 return (1);
951 }
952 /* put flash into read status mode by writing 0x70 to it */
953 flash_cmd (info->portwidth, addr, 0,
954 CHIP_CMD_RD_STAT);
955 }
956 /* flash is ready, so check the status */
957 /* create the status mask to check for errors */
958 mask = CHIP_STAT_DPS | CHIP_STAT_VPPS |
959 CHIP_STAT_PSLBS;
960 mask = mask | (mask << 16);
961 /* put flash into read status mode by writing 0x70 to it */
962 flash_cmd (info->portwidth, addr, 0,
963 CHIP_CMD_RD_STAT);
964 /* are there any errors? */
965 if ((addr[0] & mask) != 0) {
966 /* We got a one of the following errors: */
967 /* Voltage range, Device protect, or programming */
968 /* return the error as a device timeout */
969 /* put flash into read status mode by writing 0x70 to it */
970 flash_cmd (info->portwidth, addr, 0,
971 CHIP_CMD_RD_STAT);
972 printf ("Flash programming error at address 0x%08lx\n", dest);
973 printf ("Flash status register contains 0x%08lx\n", (unsigned long) addr[0]);
974 /* reset the flash */
975 flash_cmd (info->portwidth, addr, 0,
976 CHIP_CMD_RST);
977 return 1;
978 }
979 /* write completed without errors */
980 /* reset the flash */
981 flash_cmd (info->portwidth, addr, 0,
982 CHIP_CMD_RST);
983 return 0;
984 } else {
985 /* it's not 16-bits wide, so return an error as a write timeout */
986 /* NOTE: you can add routines here to handle other size flash */
987 printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
988 printf ("The write code only handles Intel 16-bit wide flash memory\n");
989 return 1;
990 }
991 } else {
992 /* not Intel flash so return an error as a write timeout */
993 /* NOTE: if it's another type flash, stick its routine here */
994 printf ("Error: The flash device is not Intel type\n");
995 printf ("The code only supports Intel flash in a 32-bit port width\n");
996 return 1;
997 }
998 }
999
1000 /* end of 32-bit flash code */
1001 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
1002 return 1;
1003 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
1004 *(unsigned long *) dest = data;
1005 return 0;
1006 }
1007 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
1008 unsigned short low = data & 0xffff;
1009 unsigned short hi = (data >> 16) & 0xffff;
1010 int ret = write_word_intel ((bank_addr_t) dest, hi);
1011
1012 if (!ret)
1013 ret = write_word_intel ((bank_addr_t) (dest + 2),
1014 low);
1015
1016 return ret;
1017 }
1018
1019 /* Check if Flash is (sufficiently) erased */
1020 if ((*((vu_long *) dest) & data) != data) {
1021 return (2);
1022 }
1023 /* Disable interrupts which might cause a timeout here */
1024 flag = disable_interrupts ();
1025
1026 /* first, perform an unlock bypass command to speed up flash writes */
1027 addr[0x555] = 0xAA;
1028 addr[0x2AA] = 0x55;
1029 addr[0x555] = 0x20;
1030
1031 /* write each byte out */
1032 for (i = 0; i < 4; i++) {
1033 char *data_ch = (char *) &data;
1034
1035 addr[0] = 0xA0;
1036 *(((char *) dest) + i) = data_ch[i];
1037 udelay (10); /* XXX */
1038 }
1039
1040 /* we're done, now do an unlock bypass reset */
1041 addr[0] = 0x90;
1042 addr[0] = 0x00;
1043
1044 /* re-enable interrupts if necessary */
1045 if (flag)
1046 enable_interrupts ();
1047
1048 /* data polling for D7 */
1049 start = get_timer (0);
1050 while ((*((vu_long *) dest) & 0x00800080) != (data & 0x00800080)) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001051 if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk3a473b22004-01-03 00:43:19 +00001052 return (1);
1053 }
1054 }
1055 return (0);
1056}