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cfi_flash: Fix logical continuations
[people/ms/u-boot.git] / drivers / mtd / cfi_flash.c
1 /*
2 * (C) Copyright 2002-2004
3 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
4 *
5 * Copyright (C) 2003 Arabella Software Ltd.
6 * Yuli Barcohen <yuli@arabellasw.com>
7 *
8 * Copyright (C) 2004
9 * Ed Okerson
10 *
11 * Copyright (C) 2006
12 * Tolunay Orkun <listmember@orkun.us>
13 *
14 * SPDX-License-Identifier: GPL-2.0+
15 */
16
17 /* The DEBUG define must be before common to enable debugging */
18 /* #define DEBUG */
19
20 #include <common.h>
21 #include <console.h>
22 #include <dm.h>
23 #include <errno.h>
24 #include <fdt_support.h>
25 #include <asm/processor.h>
26 #include <asm/io.h>
27 #include <asm/byteorder.h>
28 #include <asm/unaligned.h>
29 #include <environment.h>
30 #include <mtd/cfi_flash.h>
31 #include <watchdog.h>
32
33 /*
34 * This file implements a Common Flash Interface (CFI) driver for
35 * U-Boot.
36 *
37 * The width of the port and the width of the chips are determined at
38 * initialization. These widths are used to calculate the address for
39 * access CFI data structures.
40 *
41 * References
42 * JEDEC Standard JESD68 - Common Flash Interface (CFI)
43 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
44 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
45 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
46 * AMD CFI Specification, Release 2.0 December 1, 2001
47 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
48 * Device IDs, Publication Number 25538 Revision A, November 8, 2001
49 *
50 * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
51 * reading and writing ... (yes there is such a Hardware).
52 */
53
54 DECLARE_GLOBAL_DATA_PTR;
55
56 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
57 #ifdef CONFIG_FLASH_CFI_MTD
58 static uint flash_verbose = 1;
59 #else
60 #define flash_verbose 1
61 #endif
62
63 flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
64
65 /*
66 * Check if chip width is defined. If not, start detecting with 8bit.
67 */
68 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
69 #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
70 #endif
71
72 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
73 #define __maybe_weak __weak
74 #else
75 #define __maybe_weak static
76 #endif
77
78 /*
79 * 0xffff is an undefined value for the configuration register. When
80 * this value is returned, the configuration register shall not be
81 * written at all (default mode).
82 */
83 static u16 cfi_flash_config_reg(int i)
84 {
85 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
86 return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i];
87 #else
88 return 0xffff;
89 #endif
90 }
91
92 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
93 int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
94 #endif
95
96 #ifdef CONFIG_CFI_FLASH /* for driver model */
97 static void cfi_flash_init_dm(void)
98 {
99 struct udevice *dev;
100
101 cfi_flash_num_flash_banks = 0;
102 /*
103 * The uclass_first_device() will probe the first device and
104 * uclass_next_device() will probe the rest if they exist. So
105 * that cfi_flash_probe() will get called assigning the base
106 * addresses that are available.
107 */
108 for (uclass_first_device(UCLASS_MTD, &dev);
109 dev;
110 uclass_next_device(&dev)) {
111 }
112 }
113
114 phys_addr_t cfi_flash_bank_addr(int i)
115 {
116 return flash_info[i].base;
117 }
118 #else
119 __weak phys_addr_t cfi_flash_bank_addr(int i)
120 {
121 return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
122 }
123 #endif
124
125 __weak unsigned long cfi_flash_bank_size(int i)
126 {
127 #ifdef CONFIG_SYS_FLASH_BANKS_SIZES
128 return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i];
129 #else
130 return 0;
131 #endif
132 }
133
134 __maybe_weak void flash_write8(u8 value, void *addr)
135 {
136 __raw_writeb(value, addr);
137 }
138
139 __maybe_weak void flash_write16(u16 value, void *addr)
140 {
141 __raw_writew(value, addr);
142 }
143
144 __maybe_weak void flash_write32(u32 value, void *addr)
145 {
146 __raw_writel(value, addr);
147 }
148
149 __maybe_weak void flash_write64(u64 value, void *addr)
150 {
151 /* No architectures currently implement __raw_writeq() */
152 *(volatile u64 *)addr = value;
153 }
154
155 __maybe_weak u8 flash_read8(void *addr)
156 {
157 return __raw_readb(addr);
158 }
159
160 __maybe_weak u16 flash_read16(void *addr)
161 {
162 return __raw_readw(addr);
163 }
164
165 __maybe_weak u32 flash_read32(void *addr)
166 {
167 return __raw_readl(addr);
168 }
169
170 __maybe_weak u64 flash_read64(void *addr)
171 {
172 /* No architectures currently implement __raw_readq() */
173 return *(volatile u64 *)addr;
174 }
175
176 /*-----------------------------------------------------------------------
177 */
178 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
179 static flash_info_t *flash_get_info(ulong base)
180 {
181 int i;
182 flash_info_t *info;
183
184 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
185 info = &flash_info[i];
186 if (info->size && info->start[0] <= base &&
187 base <= info->start[0] + info->size - 1)
188 return info;
189 }
190
191 return NULL;
192 }
193 #endif
194
195 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
196 {
197 if (sect != (info->sector_count - 1))
198 return info->start[sect + 1] - info->start[sect];
199 else
200 return info->start[0] + info->size - info->start[sect];
201 }
202
203 /*-----------------------------------------------------------------------
204 * create an address based on the offset and the port width
205 */
206 static inline void *
207 flash_map(flash_info_t *info, flash_sect_t sect, uint offset)
208 {
209 unsigned int byte_offset = offset * info->portwidth;
210
211 return (void *)(info->start[sect] + byte_offset);
212 }
213
214 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
215 unsigned int offset, void *addr)
216 {
217 }
218
219 /*-----------------------------------------------------------------------
220 * make a proper sized command based on the port and chip widths
221 */
222 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
223 {
224 int i;
225 int cword_offset;
226 int cp_offset;
227 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
228 u32 cmd_le = cpu_to_le32(cmd);
229 #endif
230 uchar val;
231 uchar *cp = (uchar *) cmdbuf;
232
233 for (i = info->portwidth; i > 0; i--) {
234 cword_offset = (info->portwidth - i) % info->chipwidth;
235 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
236 cp_offset = info->portwidth - i;
237 val = *((uchar *)&cmd_le + cword_offset);
238 #else
239 cp_offset = i - 1;
240 val = *((uchar *)&cmd + sizeof(u32) - cword_offset - 1);
241 #endif
242 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
243 }
244 }
245
246 #ifdef DEBUG
247 /*-----------------------------------------------------------------------
248 * Debug support
249 */
250 static void print_longlong(char *str, unsigned long long data)
251 {
252 int i;
253 char *cp;
254
255 cp = (char *)&data;
256 for (i = 0; i < 8; i++)
257 sprintf(&str[i * 2], "%2.2x", *cp++);
258 }
259
260 static void flash_printqry(struct cfi_qry *qry)
261 {
262 u8 *p = (u8 *)qry;
263 int x, y;
264
265 for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
266 debug("%02x : ", x);
267 for (y = 0; y < 16; y++)
268 debug("%2.2x ", p[x + y]);
269 debug(" ");
270 for (y = 0; y < 16; y++) {
271 unsigned char c = p[x + y];
272
273 if (c >= 0x20 && c <= 0x7e)
274 debug("%c", c);
275 else
276 debug(".");
277 }
278 debug("\n");
279 }
280 }
281 #endif
282
283 /*-----------------------------------------------------------------------
284 * read a character at a port width address
285 */
286 static inline uchar flash_read_uchar(flash_info_t *info, uint offset)
287 {
288 uchar *cp;
289 uchar retval;
290
291 cp = flash_map(info, 0, offset);
292 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
293 retval = flash_read8(cp);
294 #else
295 retval = flash_read8(cp + info->portwidth - 1);
296 #endif
297 flash_unmap(info, 0, offset, cp);
298 return retval;
299 }
300
301 /*-----------------------------------------------------------------------
302 * read a word at a port width address, assume 16bit bus
303 */
304 static inline ushort flash_read_word(flash_info_t *info, uint offset)
305 {
306 ushort *addr, retval;
307
308 addr = flash_map(info, 0, offset);
309 retval = flash_read16(addr);
310 flash_unmap(info, 0, offset, addr);
311 return retval;
312 }
313
314 /*-----------------------------------------------------------------------
315 * read a long word by picking the least significant byte of each maximum
316 * port size word. Swap for ppc format.
317 */
318 static ulong flash_read_long (flash_info_t *info, flash_sect_t sect,
319 uint offset)
320 {
321 uchar *addr;
322 ulong retval;
323
324 #ifdef DEBUG
325 int x;
326 #endif
327 addr = flash_map(info, sect, offset);
328
329 #ifdef DEBUG
330 debug("long addr is at %p info->portwidth = %d\n", addr,
331 info->portwidth);
332 for (x = 0; x < 4 * info->portwidth; x++)
333 debug("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
334 #endif
335 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
336 retval = ((flash_read8(addr) << 16) |
337 (flash_read8(addr + info->portwidth) << 24) |
338 (flash_read8(addr + 2 * info->portwidth)) |
339 (flash_read8(addr + 3 * info->portwidth) << 8));
340 #else
341 retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
342 (flash_read8(addr + info->portwidth - 1) << 16) |
343 (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
344 (flash_read8(addr + 3 * info->portwidth - 1)));
345 #endif
346 flash_unmap(info, sect, offset, addr);
347
348 return retval;
349 }
350
351 /*
352 * Write a proper sized command to the correct address
353 */
354 static void flash_write_cmd(flash_info_t *info, flash_sect_t sect,
355 uint offset, u32 cmd)
356 {
357 void *addr;
358 cfiword_t cword;
359
360 addr = flash_map(info, sect, offset);
361 flash_make_cmd(info, cmd, &cword);
362 switch (info->portwidth) {
363 case FLASH_CFI_8BIT:
364 debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
365 cword.w8, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
366 flash_write8(cword.w8, addr);
367 break;
368 case FLASH_CFI_16BIT:
369 debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
370 cmd, cword.w16,
371 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
372 flash_write16(cword.w16, addr);
373 break;
374 case FLASH_CFI_32BIT:
375 debug("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr,
376 cmd, cword.w32,
377 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
378 flash_write32(cword.w32, addr);
379 break;
380 case FLASH_CFI_64BIT:
381 #ifdef DEBUG
382 {
383 char str[20];
384
385 print_longlong(str, cword.w64);
386
387 debug("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
388 addr, cmd, str,
389 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
390 }
391 #endif
392 flash_write64(cword.w64, addr);
393 break;
394 }
395
396 /* Ensure all the instructions are fully finished */
397 sync();
398
399 flash_unmap(info, sect, offset, addr);
400 }
401
402 static void flash_unlock_seq(flash_info_t *info, flash_sect_t sect)
403 {
404 flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
405 flash_write_cmd(info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
406 }
407
408 /*-----------------------------------------------------------------------
409 */
410 static int flash_isequal(flash_info_t *info, flash_sect_t sect,
411 uint offset, uchar cmd)
412 {
413 void *addr;
414 cfiword_t cword;
415 int retval;
416
417 addr = flash_map(info, sect, offset);
418 flash_make_cmd(info, cmd, &cword);
419
420 debug("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
421 switch (info->portwidth) {
422 case FLASH_CFI_8BIT:
423 debug("is= %x %x\n", flash_read8(addr), cword.w8);
424 retval = (flash_read8(addr) == cword.w8);
425 break;
426 case FLASH_CFI_16BIT:
427 debug("is= %4.4x %4.4x\n", flash_read16(addr), cword.w16);
428 retval = (flash_read16(addr) == cword.w16);
429 break;
430 case FLASH_CFI_32BIT:
431 debug("is= %8.8x %8.8x\n", flash_read32(addr), cword.w32);
432 retval = (flash_read32(addr) == cword.w32);
433 break;
434 case FLASH_CFI_64BIT:
435 #ifdef DEBUG
436 {
437 char str1[20];
438 char str2[20];
439
440 print_longlong(str1, flash_read64(addr));
441 print_longlong(str2, cword.w64);
442 debug("is= %s %s\n", str1, str2);
443 }
444 #endif
445 retval = (flash_read64(addr) == cword.w64);
446 break;
447 default:
448 retval = 0;
449 break;
450 }
451 flash_unmap(info, sect, offset, addr);
452
453 return retval;
454 }
455
456 /*-----------------------------------------------------------------------
457 */
458 static int flash_isset(flash_info_t *info, flash_sect_t sect,
459 uint offset, uchar cmd)
460 {
461 void *addr;
462 cfiword_t cword;
463 int retval;
464
465 addr = flash_map(info, sect, offset);
466 flash_make_cmd(info, cmd, &cword);
467 switch (info->portwidth) {
468 case FLASH_CFI_8BIT:
469 retval = ((flash_read8(addr) & cword.w8) == cword.w8);
470 break;
471 case FLASH_CFI_16BIT:
472 retval = ((flash_read16(addr) & cword.w16) == cword.w16);
473 break;
474 case FLASH_CFI_32BIT:
475 retval = ((flash_read32(addr) & cword.w32) == cword.w32);
476 break;
477 case FLASH_CFI_64BIT:
478 retval = ((flash_read64(addr) & cword.w64) == cword.w64);
479 break;
480 default:
481 retval = 0;
482 break;
483 }
484 flash_unmap(info, sect, offset, addr);
485
486 return retval;
487 }
488
489 /*-----------------------------------------------------------------------
490 */
491 static int flash_toggle(flash_info_t *info, flash_sect_t sect,
492 uint offset, uchar cmd)
493 {
494 void *addr;
495 cfiword_t cword;
496 int retval;
497
498 addr = flash_map(info, sect, offset);
499 flash_make_cmd(info, cmd, &cword);
500 switch (info->portwidth) {
501 case FLASH_CFI_8BIT:
502 retval = flash_read8(addr) != flash_read8(addr);
503 break;
504 case FLASH_CFI_16BIT:
505 retval = flash_read16(addr) != flash_read16(addr);
506 break;
507 case FLASH_CFI_32BIT:
508 retval = flash_read32(addr) != flash_read32(addr);
509 break;
510 case FLASH_CFI_64BIT:
511 retval = ((flash_read32(addr) != flash_read32(addr)) ||
512 (flash_read32(addr + 4) != flash_read32(addr + 4)));
513 break;
514 default:
515 retval = 0;
516 break;
517 }
518 flash_unmap(info, sect, offset, addr);
519
520 return retval;
521 }
522
523 /*
524 * flash_is_busy - check to see if the flash is busy
525 *
526 * This routine checks the status of the chip and returns true if the
527 * chip is busy.
528 */
529 static int flash_is_busy(flash_info_t *info, flash_sect_t sect)
530 {
531 int retval;
532
533 switch (info->vendor) {
534 case CFI_CMDSET_INTEL_PROG_REGIONS:
535 case CFI_CMDSET_INTEL_STANDARD:
536 case CFI_CMDSET_INTEL_EXTENDED:
537 retval = !flash_isset(info, sect, 0, FLASH_STATUS_DONE);
538 break;
539 case CFI_CMDSET_AMD_STANDARD:
540 case CFI_CMDSET_AMD_EXTENDED:
541 #ifdef CONFIG_FLASH_CFI_LEGACY
542 case CFI_CMDSET_AMD_LEGACY:
543 #endif
544 if (info->sr_supported) {
545 flash_write_cmd(info, sect, info->addr_unlock1,
546 FLASH_CMD_READ_STATUS);
547 retval = !flash_isset(info, sect, 0,
548 FLASH_STATUS_DONE);
549 } else {
550 retval = flash_toggle(info, sect, 0,
551 AMD_STATUS_TOGGLE);
552 }
553
554 break;
555 default:
556 retval = 0;
557 }
558 debug("flash_is_busy: %d\n", retval);
559 return retval;
560 }
561
562 /*-----------------------------------------------------------------------
563 * wait for XSR.7 to be set. Time out with an error if it does not.
564 * This routine does not set the flash to read-array mode.
565 */
566 static int flash_status_check(flash_info_t *info, flash_sect_t sector,
567 ulong tout, char *prompt)
568 {
569 ulong start;
570
571 #if CONFIG_SYS_HZ != 1000
572 if ((ulong)CONFIG_SYS_HZ > 100000)
573 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
574 else
575 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
576 #endif
577
578 /* Wait for command completion */
579 #ifdef CONFIG_SYS_LOW_RES_TIMER
580 reset_timer();
581 #endif
582 start = get_timer(0);
583 WATCHDOG_RESET();
584 while (flash_is_busy(info, sector)) {
585 if (get_timer(start) > tout) {
586 printf("Flash %s timeout at address %lx data %lx\n",
587 prompt, info->start[sector],
588 flash_read_long(info, sector, 0));
589 flash_write_cmd(info, sector, 0, info->cmd_reset);
590 udelay(1);
591 return ERR_TIMOUT;
592 }
593 udelay(1); /* also triggers watchdog */
594 }
595 return ERR_OK;
596 }
597
598 /*-----------------------------------------------------------------------
599 * Wait for XSR.7 to be set, if it times out print an error, otherwise
600 * do a full status check.
601 *
602 * This routine sets the flash to read-array mode.
603 */
604 static int flash_full_status_check(flash_info_t *info, flash_sect_t sector,
605 ulong tout, char *prompt)
606 {
607 int retcode;
608
609 retcode = flash_status_check(info, sector, tout, prompt);
610 switch (info->vendor) {
611 case CFI_CMDSET_INTEL_PROG_REGIONS:
612 case CFI_CMDSET_INTEL_EXTENDED:
613 case CFI_CMDSET_INTEL_STANDARD:
614 if ((retcode == ERR_OK) &&
615 !flash_isset(info, sector, 0, FLASH_STATUS_DONE)) {
616 retcode = ERR_INVAL;
617 printf("Flash %s error at address %lx\n", prompt,
618 info->start[sector]);
619 if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS |
620 FLASH_STATUS_PSLBS)) {
621 puts("Command Sequence Error.\n");
622 } else if (flash_isset(info, sector, 0,
623 FLASH_STATUS_ECLBS)) {
624 puts("Block Erase Error.\n");
625 retcode = ERR_NOT_ERASED;
626 } else if (flash_isset(info, sector, 0,
627 FLASH_STATUS_PSLBS)) {
628 puts("Locking Error\n");
629 }
630 if (flash_isset(info, sector, 0, FLASH_STATUS_DPS)) {
631 puts("Block locked.\n");
632 retcode = ERR_PROTECTED;
633 }
634 if (flash_isset(info, sector, 0, FLASH_STATUS_VPENS))
635 puts("Vpp Low Error.\n");
636 }
637 flash_write_cmd(info, sector, 0, info->cmd_reset);
638 udelay(1);
639 break;
640 default:
641 break;
642 }
643 return retcode;
644 }
645
646 static int use_flash_status_poll(flash_info_t *info)
647 {
648 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
649 if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
650 info->vendor == CFI_CMDSET_AMD_STANDARD)
651 return 1;
652 #endif
653 return 0;
654 }
655
656 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
657 ulong tout, char *prompt)
658 {
659 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
660 ulong start;
661 int ready;
662
663 #if CONFIG_SYS_HZ != 1000
664 if ((ulong)CONFIG_SYS_HZ > 100000)
665 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */
666 else
667 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
668 #endif
669
670 /* Wait for command completion */
671 #ifdef CONFIG_SYS_LOW_RES_TIMER
672 reset_timer();
673 #endif
674 start = get_timer(0);
675 WATCHDOG_RESET();
676 while (1) {
677 switch (info->portwidth) {
678 case FLASH_CFI_8BIT:
679 ready = flash_read8(dst) == flash_read8(src);
680 break;
681 case FLASH_CFI_16BIT:
682 ready = flash_read16(dst) == flash_read16(src);
683 break;
684 case FLASH_CFI_32BIT:
685 ready = flash_read32(dst) == flash_read32(src);
686 break;
687 case FLASH_CFI_64BIT:
688 ready = flash_read64(dst) == flash_read64(src);
689 break;
690 default:
691 ready = 0;
692 break;
693 }
694 if (ready)
695 break;
696 if (get_timer(start) > tout) {
697 printf("Flash %s timeout at address %lx data %lx\n",
698 prompt, (ulong)dst, (ulong)flash_read8(dst));
699 return ERR_TIMOUT;
700 }
701 udelay(1); /* also triggers watchdog */
702 }
703 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
704 return ERR_OK;
705 }
706
707 /*-----------------------------------------------------------------------
708 */
709 static void flash_add_byte(flash_info_t *info, cfiword_t *cword, uchar c)
710 {
711 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
712 unsigned short w;
713 unsigned int l;
714 unsigned long long ll;
715 #endif
716
717 switch (info->portwidth) {
718 case FLASH_CFI_8BIT:
719 cword->w8 = c;
720 break;
721 case FLASH_CFI_16BIT:
722 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
723 w = c;
724 w <<= 8;
725 cword->w16 = (cword->w16 >> 8) | w;
726 #else
727 cword->w16 = (cword->w16 << 8) | c;
728 #endif
729 break;
730 case FLASH_CFI_32BIT:
731 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
732 l = c;
733 l <<= 24;
734 cword->w32 = (cword->w32 >> 8) | l;
735 #else
736 cword->w32 = (cword->w32 << 8) | c;
737 #endif
738 break;
739 case FLASH_CFI_64BIT:
740 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
741 ll = c;
742 ll <<= 56;
743 cword->w64 = (cword->w64 >> 8) | ll;
744 #else
745 cword->w64 = (cword->w64 << 8) | c;
746 #endif
747 break;
748 }
749 }
750
751 /*
752 * Loop through the sector table starting from the previously found sector.
753 * Searches forwards or backwards, dependent on the passed address.
754 */
755 static flash_sect_t find_sector(flash_info_t *info, ulong addr)
756 {
757 static flash_sect_t saved_sector; /* previously found sector */
758 static flash_info_t *saved_info; /* previously used flash bank */
759 flash_sect_t sector = saved_sector;
760
761 if ((info != saved_info) || (sector >= info->sector_count))
762 sector = 0;
763
764 while ((info->start[sector] < addr) &&
765 (sector < info->sector_count - 1))
766 sector++;
767 while ((info->start[sector] > addr) && (sector > 0))
768 /*
769 * also decrements the sector in case of an overshot
770 * in the first loop
771 */
772 sector--;
773
774 saved_sector = sector;
775 saved_info = info;
776 return sector;
777 }
778
779 /*-----------------------------------------------------------------------
780 */
781 static int flash_write_cfiword(flash_info_t *info, ulong dest,
782 cfiword_t cword)
783 {
784 void *dstaddr = (void *)dest;
785 int flag;
786 flash_sect_t sect = 0;
787 char sect_found = 0;
788
789 /* Check if Flash is (sufficiently) erased */
790 switch (info->portwidth) {
791 case FLASH_CFI_8BIT:
792 flag = ((flash_read8(dstaddr) & cword.w8) == cword.w8);
793 break;
794 case FLASH_CFI_16BIT:
795 flag = ((flash_read16(dstaddr) & cword.w16) == cword.w16);
796 break;
797 case FLASH_CFI_32BIT:
798 flag = ((flash_read32(dstaddr) & cword.w32) == cword.w32);
799 break;
800 case FLASH_CFI_64BIT:
801 flag = ((flash_read64(dstaddr) & cword.w64) == cword.w64);
802 break;
803 default:
804 flag = 0;
805 break;
806 }
807 if (!flag)
808 return ERR_NOT_ERASED;
809
810 /* Disable interrupts which might cause a timeout here */
811 flag = disable_interrupts();
812
813 switch (info->vendor) {
814 case CFI_CMDSET_INTEL_PROG_REGIONS:
815 case CFI_CMDSET_INTEL_EXTENDED:
816 case CFI_CMDSET_INTEL_STANDARD:
817 flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS);
818 flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE);
819 break;
820 case CFI_CMDSET_AMD_EXTENDED:
821 case CFI_CMDSET_AMD_STANDARD:
822 sect = find_sector(info, dest);
823 flash_unlock_seq(info, sect);
824 flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_WRITE);
825 sect_found = 1;
826 break;
827 #ifdef CONFIG_FLASH_CFI_LEGACY
828 case CFI_CMDSET_AMD_LEGACY:
829 sect = find_sector(info, dest);
830 flash_unlock_seq(info, 0);
831 flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_WRITE);
832 sect_found = 1;
833 break;
834 #endif
835 }
836
837 switch (info->portwidth) {
838 case FLASH_CFI_8BIT:
839 flash_write8(cword.w8, dstaddr);
840 break;
841 case FLASH_CFI_16BIT:
842 flash_write16(cword.w16, dstaddr);
843 break;
844 case FLASH_CFI_32BIT:
845 flash_write32(cword.w32, dstaddr);
846 break;
847 case FLASH_CFI_64BIT:
848 flash_write64(cword.w64, dstaddr);
849 break;
850 }
851
852 /* re-enable interrupts if necessary */
853 if (flag)
854 enable_interrupts();
855
856 if (!sect_found)
857 sect = find_sector(info, dest);
858
859 if (use_flash_status_poll(info))
860 return flash_status_poll(info, &cword, dstaddr,
861 info->write_tout, "write");
862 else
863 return flash_full_status_check(info, sect,
864 info->write_tout, "write");
865 }
866
867 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
868
869 static int flash_write_cfibuffer(flash_info_t *info, ulong dest, uchar *cp,
870 int len)
871 {
872 flash_sect_t sector;
873 int cnt;
874 int retcode;
875 void *src = cp;
876 void *dst = (void *)dest;
877 void *dst2 = dst;
878 int flag = 1;
879 uint offset = 0;
880 unsigned int shift;
881 uchar write_cmd;
882
883 switch (info->portwidth) {
884 case FLASH_CFI_8BIT:
885 shift = 0;
886 break;
887 case FLASH_CFI_16BIT:
888 shift = 1;
889 break;
890 case FLASH_CFI_32BIT:
891 shift = 2;
892 break;
893 case FLASH_CFI_64BIT:
894 shift = 3;
895 break;
896 default:
897 retcode = ERR_INVAL;
898 goto out_unmap;
899 }
900
901 cnt = len >> shift;
902
903 while ((cnt-- > 0) && (flag == 1)) {
904 switch (info->portwidth) {
905 case FLASH_CFI_8BIT:
906 flag = ((flash_read8(dst2) & flash_read8(src)) ==
907 flash_read8(src));
908 src += 1, dst2 += 1;
909 break;
910 case FLASH_CFI_16BIT:
911 flag = ((flash_read16(dst2) & flash_read16(src)) ==
912 flash_read16(src));
913 src += 2, dst2 += 2;
914 break;
915 case FLASH_CFI_32BIT:
916 flag = ((flash_read32(dst2) & flash_read32(src)) ==
917 flash_read32(src));
918 src += 4, dst2 += 4;
919 break;
920 case FLASH_CFI_64BIT:
921 flag = ((flash_read64(dst2) & flash_read64(src)) ==
922 flash_read64(src));
923 src += 8, dst2 += 8;
924 break;
925 }
926 }
927 if (!flag) {
928 retcode = ERR_NOT_ERASED;
929 goto out_unmap;
930 }
931
932 src = cp;
933 sector = find_sector(info, dest);
934
935 switch (info->vendor) {
936 case CFI_CMDSET_INTEL_PROG_REGIONS:
937 case CFI_CMDSET_INTEL_STANDARD:
938 case CFI_CMDSET_INTEL_EXTENDED:
939 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
940 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
941 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
942 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
943 flash_write_cmd(info, sector, 0, write_cmd);
944 retcode = flash_status_check(info, sector,
945 info->buffer_write_tout,
946 "write to buffer");
947 if (retcode == ERR_OK) {
948 /* reduce the number of loops by the width of
949 * the port */
950 cnt = len >> shift;
951 flash_write_cmd(info, sector, 0, cnt - 1);
952 while (cnt-- > 0) {
953 switch (info->portwidth) {
954 case FLASH_CFI_8BIT:
955 flash_write8(flash_read8(src), dst);
956 src += 1, dst += 1;
957 break;
958 case FLASH_CFI_16BIT:
959 flash_write16(flash_read16(src), dst);
960 src += 2, dst += 2;
961 break;
962 case FLASH_CFI_32BIT:
963 flash_write32(flash_read32(src), dst);
964 src += 4, dst += 4;
965 break;
966 case FLASH_CFI_64BIT:
967 flash_write64(flash_read64(src), dst);
968 src += 8, dst += 8;
969 break;
970 default:
971 retcode = ERR_INVAL;
972 goto out_unmap;
973 }
974 }
975 flash_write_cmd(info, sector, 0,
976 FLASH_CMD_WRITE_BUFFER_CONFIRM);
977 retcode = flash_full_status_check(
978 info, sector, info->buffer_write_tout,
979 "buffer write");
980 }
981
982 break;
983
984 case CFI_CMDSET_AMD_STANDARD:
985 case CFI_CMDSET_AMD_EXTENDED:
986 flash_unlock_seq(info, sector);
987
988 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
989 offset = ((unsigned long)dst - info->start[sector]) >> shift;
990 #endif
991 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
992 cnt = len >> shift;
993 flash_write_cmd(info, sector, offset, cnt - 1);
994
995 switch (info->portwidth) {
996 case FLASH_CFI_8BIT:
997 while (cnt-- > 0) {
998 flash_write8(flash_read8(src), dst);
999 src += 1, dst += 1;
1000 }
1001 break;
1002 case FLASH_CFI_16BIT:
1003 while (cnt-- > 0) {
1004 flash_write16(flash_read16(src), dst);
1005 src += 2, dst += 2;
1006 }
1007 break;
1008 case FLASH_CFI_32BIT:
1009 while (cnt-- > 0) {
1010 flash_write32(flash_read32(src), dst);
1011 src += 4, dst += 4;
1012 }
1013 break;
1014 case FLASH_CFI_64BIT:
1015 while (cnt-- > 0) {
1016 flash_write64(flash_read64(src), dst);
1017 src += 8, dst += 8;
1018 }
1019 break;
1020 default:
1021 retcode = ERR_INVAL;
1022 goto out_unmap;
1023 }
1024
1025 flash_write_cmd(info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1026 if (use_flash_status_poll(info))
1027 retcode = flash_status_poll(info, src - (1 << shift),
1028 dst - (1 << shift),
1029 info->buffer_write_tout,
1030 "buffer write");
1031 else
1032 retcode = flash_full_status_check(info, sector,
1033 info->buffer_write_tout,
1034 "buffer write");
1035 break;
1036
1037 default:
1038 debug("Unknown Command Set\n");
1039 retcode = ERR_INVAL;
1040 break;
1041 }
1042
1043 out_unmap:
1044 return retcode;
1045 }
1046 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1047
1048 /*-----------------------------------------------------------------------
1049 */
1050 int flash_erase(flash_info_t *info, int s_first, int s_last)
1051 {
1052 int rcode = 0;
1053 int prot;
1054 flash_sect_t sect;
1055 int st;
1056
1057 if (info->flash_id != FLASH_MAN_CFI) {
1058 puts("Can't erase unknown flash type - aborted\n");
1059 return 1;
1060 }
1061 if ((s_first < 0) || (s_first > s_last)) {
1062 puts("- no sectors to erase\n");
1063 return 1;
1064 }
1065
1066 prot = 0;
1067 for (sect = s_first; sect <= s_last; ++sect)
1068 if (info->protect[sect])
1069 prot++;
1070 if (prot) {
1071 printf("- Warning: %d protected sectors will not be erased!\n",
1072 prot);
1073 } else if (flash_verbose) {
1074 putc('\n');
1075 }
1076
1077 for (sect = s_first; sect <= s_last; sect++) {
1078 if (ctrlc()) {
1079 printf("\n");
1080 return 1;
1081 }
1082
1083 if (info->protect[sect] == 0) { /* not protected */
1084 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1085 int k;
1086 int size;
1087 int erased;
1088 u32 *flash;
1089
1090 /*
1091 * Check if whole sector is erased
1092 */
1093 size = flash_sector_size(info, sect);
1094 erased = 1;
1095 flash = (u32 *)info->start[sect];
1096 /* divide by 4 for longword access */
1097 size = size >> 2;
1098 for (k = 0; k < size; k++) {
1099 if (flash_read32(flash++) != 0xffffffff) {
1100 erased = 0;
1101 break;
1102 }
1103 }
1104 if (erased) {
1105 if (flash_verbose)
1106 putc(',');
1107 continue;
1108 }
1109 #endif
1110 switch (info->vendor) {
1111 case CFI_CMDSET_INTEL_PROG_REGIONS:
1112 case CFI_CMDSET_INTEL_STANDARD:
1113 case CFI_CMDSET_INTEL_EXTENDED:
1114 flash_write_cmd(info, sect, 0,
1115 FLASH_CMD_CLEAR_STATUS);
1116 flash_write_cmd(info, sect, 0,
1117 FLASH_CMD_BLOCK_ERASE);
1118 flash_write_cmd(info, sect, 0,
1119 FLASH_CMD_ERASE_CONFIRM);
1120 break;
1121 case CFI_CMDSET_AMD_STANDARD:
1122 case CFI_CMDSET_AMD_EXTENDED:
1123 flash_unlock_seq(info, sect);
1124 flash_write_cmd(info, sect,
1125 info->addr_unlock1,
1126 AMD_CMD_ERASE_START);
1127 flash_unlock_seq(info, sect);
1128 flash_write_cmd(info, sect, 0,
1129 info->cmd_erase_sector);
1130 break;
1131 #ifdef CONFIG_FLASH_CFI_LEGACY
1132 case CFI_CMDSET_AMD_LEGACY:
1133 flash_unlock_seq(info, 0);
1134 flash_write_cmd(info, 0, info->addr_unlock1,
1135 AMD_CMD_ERASE_START);
1136 flash_unlock_seq(info, 0);
1137 flash_write_cmd(info, sect, 0,
1138 AMD_CMD_ERASE_SECTOR);
1139 break;
1140 #endif
1141 default:
1142 debug("Unkown flash vendor %d\n",
1143 info->vendor);
1144 break;
1145 }
1146
1147 if (use_flash_status_poll(info)) {
1148 cfiword_t cword;
1149 void *dest;
1150
1151 cword.w64 = 0xffffffffffffffffULL;
1152 dest = flash_map(info, sect, 0);
1153 st = flash_status_poll(info, &cword, dest,
1154 info->erase_blk_tout, "erase");
1155 flash_unmap(info, sect, 0, dest);
1156 } else
1157 st = flash_full_status_check(info, sect,
1158 info->erase_blk_tout,
1159 "erase");
1160 if (st)
1161 rcode = 1;
1162 else if (flash_verbose)
1163 putc('.');
1164 }
1165 }
1166
1167 if (flash_verbose)
1168 puts(" done\n");
1169
1170 return rcode;
1171 }
1172
1173 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1174 static int sector_erased(flash_info_t *info, int i)
1175 {
1176 int k;
1177 int size;
1178 u32 *flash;
1179
1180 /*
1181 * Check if whole sector is erased
1182 */
1183 size = flash_sector_size(info, i);
1184 flash = (u32 *)info->start[i];
1185 /* divide by 4 for longword access */
1186 size = size >> 2;
1187
1188 for (k = 0; k < size; k++) {
1189 if (flash_read32(flash++) != 0xffffffff)
1190 return 0; /* not erased */
1191 }
1192
1193 return 1; /* erased */
1194 }
1195 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1196
1197 void flash_print_info(flash_info_t *info)
1198 {
1199 int i;
1200
1201 if (info->flash_id != FLASH_MAN_CFI) {
1202 puts("missing or unknown FLASH type\n");
1203 return;
1204 }
1205
1206 printf("%s flash (%d x %d)",
1207 info->name,
1208 (info->portwidth << 3), (info->chipwidth << 3));
1209 if (info->size < 1024 * 1024)
1210 printf(" Size: %ld kB in %d Sectors\n",
1211 info->size >> 10, info->sector_count);
1212 else
1213 printf(" Size: %ld MB in %d Sectors\n",
1214 info->size >> 20, info->sector_count);
1215 printf(" ");
1216 switch (info->vendor) {
1217 case CFI_CMDSET_INTEL_PROG_REGIONS:
1218 printf("Intel Prog Regions");
1219 break;
1220 case CFI_CMDSET_INTEL_STANDARD:
1221 printf("Intel Standard");
1222 break;
1223 case CFI_CMDSET_INTEL_EXTENDED:
1224 printf("Intel Extended");
1225 break;
1226 case CFI_CMDSET_AMD_STANDARD:
1227 printf("AMD Standard");
1228 break;
1229 case CFI_CMDSET_AMD_EXTENDED:
1230 printf("AMD Extended");
1231 break;
1232 #ifdef CONFIG_FLASH_CFI_LEGACY
1233 case CFI_CMDSET_AMD_LEGACY:
1234 printf("AMD Legacy");
1235 break;
1236 #endif
1237 default:
1238 printf("Unknown (%d)", info->vendor);
1239 break;
1240 }
1241 printf(" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1242 info->manufacturer_id);
1243 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1244 info->device_id);
1245 if ((info->device_id & 0xff) == 0x7E) {
1246 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1247 info->device_id2);
1248 }
1249 if ((info->vendor == CFI_CMDSET_AMD_STANDARD) && (info->legacy_unlock))
1250 printf("\n Advanced Sector Protection (PPB) enabled");
1251 printf("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1252 info->erase_blk_tout,
1253 info->write_tout);
1254 if (info->buffer_size > 1) {
1255 printf(" Buffer write timeout: %ld ms, "
1256 "buffer size: %d bytes\n",
1257 info->buffer_write_tout,
1258 info->buffer_size);
1259 }
1260
1261 puts("\n Sector Start Addresses:");
1262 for (i = 0; i < info->sector_count; ++i) {
1263 if (ctrlc())
1264 break;
1265 if ((i % 5) == 0)
1266 putc('\n');
1267 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1268 /* print empty and read-only info */
1269 printf(" %08lX %c %s ",
1270 info->start[i],
1271 sector_erased(info, i) ? 'E' : ' ',
1272 info->protect[i] ? "RO" : " ");
1273 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1274 printf(" %08lX %s ",
1275 info->start[i],
1276 info->protect[i] ? "RO" : " ");
1277 #endif
1278 }
1279 putc('\n');
1280 return;
1281 }
1282
1283 /*-----------------------------------------------------------------------
1284 * This is used in a few places in write_buf() to show programming
1285 * progress. Making it a function is nasty because it needs to do side
1286 * effect updates to digit and dots. Repeated code is nasty too, so
1287 * we define it once here.
1288 */
1289 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1290 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1291 if (flash_verbose) { \
1292 dots -= dots_sub; \
1293 if ((scale > 0) && (dots <= 0)) { \
1294 if ((digit % 5) == 0) \
1295 printf("%d", digit / 5); \
1296 else \
1297 putc('.'); \
1298 digit--; \
1299 dots += scale; \
1300 } \
1301 }
1302 #else
1303 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1304 #endif
1305
1306 /*-----------------------------------------------------------------------
1307 * Copy memory to flash, returns:
1308 * 0 - OK
1309 * 1 - write timeout
1310 * 2 - Flash not erased
1311 */
1312 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
1313 {
1314 ulong wp;
1315 uchar *p;
1316 int aln;
1317 cfiword_t cword;
1318 int i, rc;
1319 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1320 int buffered_size;
1321 #endif
1322 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1323 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1324 int scale = 0;
1325 int dots = 0;
1326
1327 /*
1328 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1329 */
1330 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1331 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1332 CONFIG_FLASH_SHOW_PROGRESS);
1333 }
1334 #endif
1335
1336 /* get lower aligned address */
1337 wp = (addr & ~(info->portwidth - 1));
1338
1339 /* handle unaligned start */
1340 if ((aln = addr - wp) != 0) {
1341 cword.w32 = 0;
1342 p = (uchar *)wp;
1343 for (i = 0; i < aln; ++i)
1344 flash_add_byte(info, &cword, flash_read8(p + i));
1345
1346 for (; (i < info->portwidth) && (cnt > 0); i++) {
1347 flash_add_byte(info, &cword, *src++);
1348 cnt--;
1349 }
1350 for (; (cnt == 0) && (i < info->portwidth); ++i)
1351 flash_add_byte(info, &cword, flash_read8(p + i));
1352
1353 rc = flash_write_cfiword(info, wp, cword);
1354 if (rc != 0)
1355 return rc;
1356
1357 wp += i;
1358 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1359 }
1360
1361 /* handle the aligned part */
1362 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1363 buffered_size = (info->portwidth / info->chipwidth);
1364 buffered_size *= info->buffer_size;
1365 while (cnt >= info->portwidth) {
1366 /* prohibit buffer write when buffer_size is 1 */
1367 if (info->buffer_size == 1) {
1368 cword.w32 = 0;
1369 for (i = 0; i < info->portwidth; i++)
1370 flash_add_byte(info, &cword, *src++);
1371 if ((rc = flash_write_cfiword(info, wp, cword)) != 0)
1372 return rc;
1373 wp += info->portwidth;
1374 cnt -= info->portwidth;
1375 continue;
1376 }
1377
1378 /* write buffer until next buffered_size aligned boundary */
1379 i = buffered_size - (wp % buffered_size);
1380 if (i > cnt)
1381 i = cnt;
1382 if ((rc = flash_write_cfibuffer(info, wp, src, i)) != ERR_OK)
1383 return rc;
1384 i -= i & (info->portwidth - 1);
1385 wp += i;
1386 src += i;
1387 cnt -= i;
1388 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1389 /* Only check every once in a while */
1390 if ((cnt & 0xFFFF) < buffered_size && ctrlc())
1391 return ERR_ABORTED;
1392 }
1393 #else
1394 while (cnt >= info->portwidth) {
1395 cword.w32 = 0;
1396 for (i = 0; i < info->portwidth; i++)
1397 flash_add_byte(info, &cword, *src++);
1398 if ((rc = flash_write_cfiword(info, wp, cword)) != 0)
1399 return rc;
1400 wp += info->portwidth;
1401 cnt -= info->portwidth;
1402 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1403 /* Only check every once in a while */
1404 if ((cnt & 0xFFFF) < info->portwidth && ctrlc())
1405 return ERR_ABORTED;
1406 }
1407 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1408
1409 if (cnt == 0)
1410 return (0);
1411
1412 /*
1413 * handle unaligned tail bytes
1414 */
1415 cword.w32 = 0;
1416 p = (uchar *)wp;
1417 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1418 flash_add_byte(info, &cword, *src++);
1419 --cnt;
1420 }
1421 for (; i < info->portwidth; ++i)
1422 flash_add_byte(info, &cword, flash_read8(p + i));
1423
1424 return flash_write_cfiword(info, wp, cword);
1425 }
1426
1427 static inline int manufact_match(flash_info_t *info, u32 manu)
1428 {
1429 return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16);
1430 }
1431
1432 /*-----------------------------------------------------------------------
1433 */
1434 #ifdef CONFIG_SYS_FLASH_PROTECTION
1435
1436 static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
1437 {
1438 if (manufact_match(info, INTEL_MANUFACT) &&
1439 info->device_id == NUMONYX_256MBIT) {
1440 /*
1441 * see errata called
1442 * "Numonyx Axcell P33/P30 Specification Update" :)
1443 */
1444 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
1445 if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
1446 prot)) {
1447 /*
1448 * cmd must come before FLASH_CMD_PROTECT + 20us
1449 * Disable interrupts which might cause a timeout here.
1450 */
1451 int flag = disable_interrupts();
1452 unsigned short cmd;
1453
1454 if (prot)
1455 cmd = FLASH_CMD_PROTECT_SET;
1456 else
1457 cmd = FLASH_CMD_PROTECT_CLEAR;
1458
1459 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1460 flash_write_cmd(info, sector, 0, cmd);
1461 /* re-enable interrupts if necessary */
1462 if (flag)
1463 enable_interrupts();
1464 }
1465 return 1;
1466 }
1467 return 0;
1468 }
1469
1470 int flash_real_protect(flash_info_t *info, long sector, int prot)
1471 {
1472 int retcode = 0;
1473
1474 switch (info->vendor) {
1475 case CFI_CMDSET_INTEL_PROG_REGIONS:
1476 case CFI_CMDSET_INTEL_STANDARD:
1477 case CFI_CMDSET_INTEL_EXTENDED:
1478 if (!cfi_protect_bugfix(info, sector, prot)) {
1479 flash_write_cmd(info, sector, 0,
1480 FLASH_CMD_CLEAR_STATUS);
1481 flash_write_cmd(info, sector, 0,
1482 FLASH_CMD_PROTECT);
1483 if (prot)
1484 flash_write_cmd(info, sector, 0,
1485 FLASH_CMD_PROTECT_SET);
1486 else
1487 flash_write_cmd(info, sector, 0,
1488 FLASH_CMD_PROTECT_CLEAR);
1489 }
1490 break;
1491 case CFI_CMDSET_AMD_EXTENDED:
1492 case CFI_CMDSET_AMD_STANDARD:
1493 /* U-Boot only checks the first byte */
1494 if (manufact_match(info, ATM_MANUFACT)) {
1495 if (prot) {
1496 flash_unlock_seq(info, 0);
1497 flash_write_cmd(info, 0,
1498 info->addr_unlock1,
1499 ATM_CMD_SOFTLOCK_START);
1500 flash_unlock_seq(info, 0);
1501 flash_write_cmd(info, sector, 0,
1502 ATM_CMD_LOCK_SECT);
1503 } else {
1504 flash_write_cmd(info, 0,
1505 info->addr_unlock1,
1506 AMD_CMD_UNLOCK_START);
1507 if (info->device_id == ATM_ID_BV6416)
1508 flash_write_cmd(info, sector,
1509 0, ATM_CMD_UNLOCK_SECT);
1510 }
1511 }
1512 if (info->legacy_unlock) {
1513 int flag = disable_interrupts();
1514 int lock_flag;
1515
1516 flash_unlock_seq(info, 0);
1517 flash_write_cmd(info, 0, info->addr_unlock1,
1518 AMD_CMD_SET_PPB_ENTRY);
1519 lock_flag = flash_isset(info, sector, 0, 0x01);
1520 if (prot) {
1521 if (lock_flag) {
1522 flash_write_cmd(info, sector, 0,
1523 AMD_CMD_PPB_LOCK_BC1);
1524 flash_write_cmd(info, sector, 0,
1525 AMD_CMD_PPB_LOCK_BC2);
1526 }
1527 debug("sector %ld %slocked\n", sector,
1528 lock_flag ? "" : "already ");
1529 } else {
1530 if (!lock_flag) {
1531 debug("unlock %ld\n", sector);
1532 flash_write_cmd(info, 0, 0,
1533 AMD_CMD_PPB_UNLOCK_BC1);
1534 flash_write_cmd(info, 0, 0,
1535 AMD_CMD_PPB_UNLOCK_BC2);
1536 }
1537 debug("sector %ld %sunlocked\n", sector,
1538 !lock_flag ? "" : "already ");
1539 }
1540 if (flag)
1541 enable_interrupts();
1542
1543 if (flash_status_check(info, sector,
1544 info->erase_blk_tout,
1545 prot ? "protect" : "unprotect"))
1546 printf("status check error\n");
1547
1548 flash_write_cmd(info, 0, 0,
1549 AMD_CMD_SET_PPB_EXIT_BC1);
1550 flash_write_cmd(info, 0, 0,
1551 AMD_CMD_SET_PPB_EXIT_BC2);
1552 }
1553 break;
1554 #ifdef CONFIG_FLASH_CFI_LEGACY
1555 case CFI_CMDSET_AMD_LEGACY:
1556 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1557 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1558 if (prot)
1559 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET);
1560 else
1561 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1562 #endif
1563 };
1564
1565 /*
1566 * Flash needs to be in status register read mode for
1567 * flash_full_status_check() to work correctly
1568 */
1569 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1570 if ((retcode =
1571 flash_full_status_check(info, sector, info->erase_blk_tout,
1572 prot ? "protect" : "unprotect")) == 0) {
1573 info->protect[sector] = prot;
1574
1575 /*
1576 * On some of Intel's flash chips (marked via legacy_unlock)
1577 * unprotect unprotects all locking.
1578 */
1579 if ((prot == 0) && (info->legacy_unlock)) {
1580 flash_sect_t i;
1581
1582 for (i = 0; i < info->sector_count; i++) {
1583 if (info->protect[i])
1584 flash_real_protect(info, i, 1);
1585 }
1586 }
1587 }
1588 return retcode;
1589 }
1590
1591 /*-----------------------------------------------------------------------
1592 * flash_read_user_serial - read the OneTimeProgramming cells
1593 */
1594 void flash_read_user_serial(flash_info_t *info, void *buffer, int offset,
1595 int len)
1596 {
1597 uchar *src;
1598 uchar *dst;
1599
1600 dst = buffer;
1601 src = flash_map(info, 0, FLASH_OFFSET_USER_PROTECTION);
1602 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1603 memcpy(dst, src + offset, len);
1604 flash_write_cmd(info, 0, 0, info->cmd_reset);
1605 udelay(1);
1606 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1607 }
1608
1609 /*
1610 * flash_read_factory_serial - read the device Id from the protection area
1611 */
1612 void flash_read_factory_serial(flash_info_t *info, void *buffer, int offset,
1613 int len)
1614 {
1615 uchar *src;
1616
1617 src = flash_map(info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1618 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1619 memcpy(buffer, src + offset, len);
1620 flash_write_cmd(info, 0, 0, info->cmd_reset);
1621 udelay(1);
1622 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1623 }
1624
1625 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1626
1627 /*-----------------------------------------------------------------------
1628 * Reverse the order of the erase regions in the CFI QRY structure.
1629 * This is needed for chips that are either a) correctly detected as
1630 * top-boot, or b) buggy.
1631 */
1632 static void cfi_reverse_geometry(struct cfi_qry *qry)
1633 {
1634 unsigned int i, j;
1635 u32 tmp;
1636
1637 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1638 tmp = get_unaligned(&(qry->erase_region_info[i]));
1639 put_unaligned(get_unaligned(&(qry->erase_region_info[j])),
1640 &(qry->erase_region_info[i]));
1641 put_unaligned(tmp, &(qry->erase_region_info[j]));
1642 }
1643 }
1644
1645 /*-----------------------------------------------------------------------
1646 * read jedec ids from device and set corresponding fields in info struct
1647 *
1648 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1649 *
1650 */
1651 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1652 {
1653 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1654 udelay(1);
1655 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1656 udelay(1000); /* some flash are slow to respond */
1657 info->manufacturer_id = flash_read_uchar(info,
1658 FLASH_OFFSET_MANUFACTURER_ID);
1659 info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1660 flash_read_word(info, FLASH_OFFSET_DEVICE_ID) :
1661 flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID);
1662 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1663 }
1664
1665 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1666 {
1667 info->cmd_reset = FLASH_CMD_RESET;
1668
1669 cmdset_intel_read_jedec_ids(info);
1670 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1671
1672 #ifdef CONFIG_SYS_FLASH_PROTECTION
1673 /* read legacy lock/unlock bit from intel flash */
1674 if (info->ext_addr) {
1675 info->legacy_unlock = flash_read_uchar(info,
1676 info->ext_addr + 5) & 0x08;
1677 }
1678 #endif
1679
1680 return 0;
1681 }
1682
1683 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1684 {
1685 ushort bankId = 0;
1686 uchar manuId;
1687 uchar feature;
1688
1689 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1690 flash_unlock_seq(info, 0);
1691 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1692 udelay(1000); /* some flash are slow to respond */
1693
1694 manuId = flash_read_uchar(info, FLASH_OFFSET_MANUFACTURER_ID);
1695 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1696 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1697 bankId += 0x100;
1698 manuId = flash_read_uchar(info,
1699 bankId | FLASH_OFFSET_MANUFACTURER_ID);
1700 }
1701 info->manufacturer_id = manuId;
1702
1703 debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n",
1704 info->ext_addr, info->cfi_version);
1705 if (info->ext_addr && info->cfi_version >= 0x3134) {
1706 /* read software feature (at 0x53) */
1707 feature = flash_read_uchar(info, info->ext_addr + 0x13);
1708 debug("feature = 0x%x\n", feature);
1709 info->sr_supported = feature & 0x1;
1710 }
1711
1712 switch (info->chipwidth) {
1713 case FLASH_CFI_8BIT:
1714 info->device_id = flash_read_uchar(info,
1715 FLASH_OFFSET_DEVICE_ID);
1716 if (info->device_id == 0x7E) {
1717 /* AMD 3-byte (expanded) device ids */
1718 info->device_id2 = flash_read_uchar(info,
1719 FLASH_OFFSET_DEVICE_ID2);
1720 info->device_id2 <<= 8;
1721 info->device_id2 |= flash_read_uchar(info,
1722 FLASH_OFFSET_DEVICE_ID3);
1723 }
1724 break;
1725 case FLASH_CFI_16BIT:
1726 info->device_id = flash_read_word(info,
1727 FLASH_OFFSET_DEVICE_ID);
1728 if ((info->device_id & 0xff) == 0x7E) {
1729 /* AMD 3-byte (expanded) device ids */
1730 info->device_id2 = flash_read_uchar(info,
1731 FLASH_OFFSET_DEVICE_ID2);
1732 info->device_id2 <<= 8;
1733 info->device_id2 |= flash_read_uchar(info,
1734 FLASH_OFFSET_DEVICE_ID3);
1735 }
1736 break;
1737 default:
1738 break;
1739 }
1740 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1741 udelay(1);
1742 }
1743
1744 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1745 {
1746 info->cmd_reset = AMD_CMD_RESET;
1747 info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR;
1748
1749 cmdset_amd_read_jedec_ids(info);
1750 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1751
1752 #ifdef CONFIG_SYS_FLASH_PROTECTION
1753 if (info->ext_addr) {
1754 /* read sector protect/unprotect scheme (at 0x49) */
1755 if (flash_read_uchar(info, info->ext_addr + 9) == 0x8)
1756 info->legacy_unlock = 1;
1757 }
1758 #endif
1759
1760 return 0;
1761 }
1762
1763 #ifdef CONFIG_FLASH_CFI_LEGACY
1764 static void flash_read_jedec_ids(flash_info_t *info)
1765 {
1766 info->manufacturer_id = 0;
1767 info->device_id = 0;
1768 info->device_id2 = 0;
1769
1770 switch (info->vendor) {
1771 case CFI_CMDSET_INTEL_PROG_REGIONS:
1772 case CFI_CMDSET_INTEL_STANDARD:
1773 case CFI_CMDSET_INTEL_EXTENDED:
1774 cmdset_intel_read_jedec_ids(info);
1775 break;
1776 case CFI_CMDSET_AMD_STANDARD:
1777 case CFI_CMDSET_AMD_EXTENDED:
1778 cmdset_amd_read_jedec_ids(info);
1779 break;
1780 default:
1781 break;
1782 }
1783 }
1784
1785 /*-----------------------------------------------------------------------
1786 * Call board code to request info about non-CFI flash.
1787 * board_flash_get_legacy needs to fill in at least:
1788 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1789 */
1790 static int flash_detect_legacy(phys_addr_t base, int banknum)
1791 {
1792 flash_info_t *info = &flash_info[banknum];
1793
1794 if (board_flash_get_legacy(base, banknum, info)) {
1795 /* board code may have filled info completely. If not, we
1796 use JEDEC ID probing. */
1797 if (!info->vendor) {
1798 int modes[] = {
1799 CFI_CMDSET_AMD_STANDARD,
1800 CFI_CMDSET_INTEL_STANDARD
1801 };
1802 int i;
1803
1804 for (i = 0; i < ARRAY_SIZE(modes); i++) {
1805 info->vendor = modes[i];
1806 info->start[0] =
1807 (ulong)map_physmem(base,
1808 info->portwidth,
1809 MAP_NOCACHE);
1810 if (info->portwidth == FLASH_CFI_8BIT &&
1811 info->interface == FLASH_CFI_X8X16) {
1812 info->addr_unlock1 = 0x2AAA;
1813 info->addr_unlock2 = 0x5555;
1814 } else {
1815 info->addr_unlock1 = 0x5555;
1816 info->addr_unlock2 = 0x2AAA;
1817 }
1818 flash_read_jedec_ids(info);
1819 debug("JEDEC PROBE: ID %x %x %x\n",
1820 info->manufacturer_id,
1821 info->device_id,
1822 info->device_id2);
1823 if (jedec_flash_match(info, info->start[0]))
1824 break;
1825 else
1826 unmap_physmem((void *)info->start[0],
1827 info->portwidth);
1828 }
1829 }
1830
1831 switch (info->vendor) {
1832 case CFI_CMDSET_INTEL_PROG_REGIONS:
1833 case CFI_CMDSET_INTEL_STANDARD:
1834 case CFI_CMDSET_INTEL_EXTENDED:
1835 info->cmd_reset = FLASH_CMD_RESET;
1836 break;
1837 case CFI_CMDSET_AMD_STANDARD:
1838 case CFI_CMDSET_AMD_EXTENDED:
1839 case CFI_CMDSET_AMD_LEGACY:
1840 info->cmd_reset = AMD_CMD_RESET;
1841 break;
1842 }
1843 info->flash_id = FLASH_MAN_CFI;
1844 return 1;
1845 }
1846 return 0; /* use CFI */
1847 }
1848 #else
1849 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1850 {
1851 return 0; /* use CFI */
1852 }
1853 #endif
1854
1855 /*-----------------------------------------------------------------------
1856 * detect if flash is compatible with the Common Flash Interface (CFI)
1857 * http://www.jedec.org/download/search/jesd68.pdf
1858 */
1859 static void flash_read_cfi(flash_info_t *info, void *buf,
1860 unsigned int start, size_t len)
1861 {
1862 u8 *p = buf;
1863 unsigned int i;
1864
1865 for (i = 0; i < len; i++)
1866 p[i] = flash_read_uchar(info, start + i);
1867 }
1868
1869 static void __flash_cmd_reset(flash_info_t *info)
1870 {
1871 /*
1872 * We do not yet know what kind of commandset to use, so we issue
1873 * the reset command in both Intel and AMD variants, in the hope
1874 * that AMD flash roms ignore the Intel command.
1875 */
1876 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1877 udelay(1);
1878 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1879 }
1880
1881 void flash_cmd_reset(flash_info_t *info)
1882 __attribute__((weak, alias("__flash_cmd_reset")));
1883
1884 static int __flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1885 {
1886 int cfi_offset;
1887
1888 /* Issue FLASH reset command */
1889 flash_cmd_reset(info);
1890
1891 for (cfi_offset = 0; cfi_offset < ARRAY_SIZE(flash_offset_cfi);
1892 cfi_offset++) {
1893 flash_write_cmd(info, 0, flash_offset_cfi[cfi_offset],
1894 FLASH_CMD_CFI);
1895 if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q') &&
1896 flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') &&
1897 flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1898 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1899 sizeof(struct cfi_qry));
1900 info->interface = le16_to_cpu(qry->interface_desc);
1901
1902 info->cfi_offset = flash_offset_cfi[cfi_offset];
1903 debug("device interface is %d\n",
1904 info->interface);
1905 debug("found port %d chip %d ",
1906 info->portwidth, info->chipwidth);
1907 debug("port %d bits chip %d bits\n",
1908 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1909 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1910
1911 /* calculate command offsets as in the Linux driver */
1912 info->addr_unlock1 = 0x555;
1913 info->addr_unlock2 = 0x2aa;
1914
1915 /*
1916 * modify the unlock address if we are
1917 * in compatibility mode
1918 */
1919 if (/* x8/x16 in x8 mode */
1920 ((info->chipwidth == FLASH_CFI_BY8) &&
1921 (info->interface == FLASH_CFI_X8X16)) ||
1922 /* x16/x32 in x16 mode */
1923 ((info->chipwidth == FLASH_CFI_BY16) &&
1924 (info->interface == FLASH_CFI_X16X32)))
1925 {
1926 info->addr_unlock1 = 0xaaa;
1927 info->addr_unlock2 = 0x555;
1928 }
1929
1930 info->name = "CFI conformant";
1931 return 1;
1932 }
1933 }
1934
1935 return 0;
1936 }
1937
1938 static int flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1939 {
1940 debug("flash detect cfi\n");
1941
1942 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1943 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1944 for (info->chipwidth = FLASH_CFI_BY8;
1945 info->chipwidth <= info->portwidth;
1946 info->chipwidth <<= 1)
1947 if (__flash_detect_cfi(info, qry))
1948 return 1;
1949 }
1950 debug("not found\n");
1951 return 0;
1952 }
1953
1954 /*
1955 * Manufacturer-specific quirks. Add workarounds for geometry
1956 * reversal, etc. here.
1957 */
1958 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1959 {
1960 /* check if flash geometry needs reversal */
1961 if (qry->num_erase_regions > 1) {
1962 /* reverse geometry if top boot part */
1963 if (info->cfi_version < 0x3131) {
1964 /* CFI < 1.1, try to guess from device id */
1965 if ((info->device_id & 0x80) != 0)
1966 cfi_reverse_geometry(qry);
1967 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1968 /* CFI >= 1.1, deduct from top/bottom flag */
1969 /* note: ext_addr is valid since cfi_version > 0 */
1970 cfi_reverse_geometry(qry);
1971 }
1972 }
1973 }
1974
1975 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1976 {
1977 int reverse_geometry = 0;
1978
1979 /* Check the "top boot" bit in the PRI */
1980 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1981 reverse_geometry = 1;
1982
1983 /* AT49BV6416(T) list the erase regions in the wrong order.
1984 * However, the device ID is identical with the non-broken
1985 * AT49BV642D they differ in the high byte.
1986 */
1987 if (info->device_id == 0xd6 || info->device_id == 0xd2)
1988 reverse_geometry = !reverse_geometry;
1989
1990 if (reverse_geometry)
1991 cfi_reverse_geometry(qry);
1992 }
1993
1994 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1995 {
1996 /* check if flash geometry needs reversal */
1997 if (qry->num_erase_regions > 1) {
1998 /* reverse geometry if top boot part */
1999 if (info->cfi_version < 0x3131) {
2000 /* CFI < 1.1, guess by device id */
2001 if (info->device_id == 0x22CA || /* M29W320DT */
2002 info->device_id == 0x2256 || /* M29W320ET */
2003 info->device_id == 0x22D7) { /* M29W800DT */
2004 cfi_reverse_geometry(qry);
2005 }
2006 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
2007 /* CFI >= 1.1, deduct from top/bottom flag */
2008 /* note: ext_addr is valid since cfi_version > 0 */
2009 cfi_reverse_geometry(qry);
2010 }
2011 }
2012 }
2013
2014 static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry)
2015 {
2016 /*
2017 * SST, for many recent nor parallel flashes, says they are
2018 * CFI-conformant. This is not true, since qry struct.
2019 * reports a std. AMD command set (0x0002), while SST allows to
2020 * erase two different sector sizes for the same memory.
2021 * 64KB sector (SST call it block) needs 0x30 to be erased.
2022 * 4KB sector (SST call it sector) needs 0x50 to be erased.
2023 * Since CFI query detect the 4KB number of sectors, users expects
2024 * a sector granularity of 4KB, and it is here set.
2025 */
2026 if (info->device_id == 0x5D23 || /* SST39VF3201B */
2027 info->device_id == 0x5C23) { /* SST39VF3202B */
2028 /* set sector granularity to 4KB */
2029 info->cmd_erase_sector = 0x50;
2030 }
2031 }
2032
2033 static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry)
2034 {
2035 /*
2036 * The M29EW devices seem to report the CFI information wrong
2037 * when it's in 8 bit mode.
2038 * There's an app note from Numonyx on this issue.
2039 * So adjust the buffer size for M29EW while operating in 8-bit mode
2040 */
2041 if (((qry->max_buf_write_size) > 0x8) &&
2042 (info->device_id == 0x7E) &&
2043 (info->device_id2 == 0x2201 ||
2044 info->device_id2 == 0x2301 ||
2045 info->device_id2 == 0x2801 ||
2046 info->device_id2 == 0x4801)) {
2047 debug("Adjusted buffer size on Numonyx flash"
2048 " M29EW family in 8 bit mode\n");
2049 qry->max_buf_write_size = 0x8;
2050 }
2051 }
2052
2053 /*
2054 * The following code cannot be run from FLASH!
2055 *
2056 */
2057 ulong flash_get_size(phys_addr_t base, int banknum)
2058 {
2059 flash_info_t *info = &flash_info[banknum];
2060 int i, j;
2061 flash_sect_t sect_cnt;
2062 phys_addr_t sector;
2063 unsigned long tmp;
2064 int size_ratio;
2065 uchar num_erase_regions;
2066 int erase_region_size;
2067 int erase_region_count;
2068 struct cfi_qry qry;
2069 unsigned long max_size;
2070
2071 memset(&qry, 0, sizeof(qry));
2072
2073 info->ext_addr = 0;
2074 info->cfi_version = 0;
2075 #ifdef CONFIG_SYS_FLASH_PROTECTION
2076 info->legacy_unlock = 0;
2077 #endif
2078
2079 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
2080
2081 if (flash_detect_cfi(info, &qry)) {
2082 info->vendor = le16_to_cpu(get_unaligned(&(qry.p_id)));
2083 info->ext_addr = le16_to_cpu(get_unaligned(&(qry.p_adr)));
2084 num_erase_regions = qry.num_erase_regions;
2085
2086 if (info->ext_addr) {
2087 info->cfi_version = (ushort)flash_read_uchar(info,
2088 info->ext_addr + 3) << 8;
2089 info->cfi_version |= (ushort)flash_read_uchar(info,
2090 info->ext_addr + 4);
2091 }
2092
2093 #ifdef DEBUG
2094 flash_printqry(&qry);
2095 #endif
2096
2097 switch (info->vendor) {
2098 case CFI_CMDSET_INTEL_PROG_REGIONS:
2099 case CFI_CMDSET_INTEL_STANDARD:
2100 case CFI_CMDSET_INTEL_EXTENDED:
2101 cmdset_intel_init(info, &qry);
2102 break;
2103 case CFI_CMDSET_AMD_STANDARD:
2104 case CFI_CMDSET_AMD_EXTENDED:
2105 cmdset_amd_init(info, &qry);
2106 break;
2107 default:
2108 printf("CFI: Unknown command set 0x%x\n",
2109 info->vendor);
2110 /*
2111 * Unfortunately, this means we don't know how
2112 * to get the chip back to Read mode. Might
2113 * as well try an Intel-style reset...
2114 */
2115 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
2116 return 0;
2117 }
2118
2119 /* Do manufacturer-specific fixups */
2120 switch (info->manufacturer_id) {
2121 case 0x0001: /* AMD */
2122 case 0x0037: /* AMIC */
2123 flash_fixup_amd(info, &qry);
2124 break;
2125 case 0x001f:
2126 flash_fixup_atmel(info, &qry);
2127 break;
2128 case 0x0020:
2129 flash_fixup_stm(info, &qry);
2130 break;
2131 case 0x00bf: /* SST */
2132 flash_fixup_sst(info, &qry);
2133 break;
2134 case 0x0089: /* Numonyx */
2135 flash_fixup_num(info, &qry);
2136 break;
2137 }
2138
2139 debug("manufacturer is %d\n", info->vendor);
2140 debug("manufacturer id is 0x%x\n", info->manufacturer_id);
2141 debug("device id is 0x%x\n", info->device_id);
2142 debug("device id2 is 0x%x\n", info->device_id2);
2143 debug("cfi version is 0x%04x\n", info->cfi_version);
2144
2145 size_ratio = info->portwidth / info->chipwidth;
2146 /* if the chip is x8/x16 reduce the ratio by half */
2147 if ((info->interface == FLASH_CFI_X8X16) &&
2148 (info->chipwidth == FLASH_CFI_BY8)) {
2149 size_ratio >>= 1;
2150 }
2151 debug("size_ratio %d port %d bits chip %d bits\n",
2152 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
2153 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
2154 info->size = 1 << qry.dev_size;
2155 /* multiply the size by the number of chips */
2156 info->size *= size_ratio;
2157 max_size = cfi_flash_bank_size(banknum);
2158 if (max_size && (info->size > max_size)) {
2159 debug("[truncated from %ldMiB]", info->size >> 20);
2160 info->size = max_size;
2161 }
2162 debug("found %d erase regions\n", num_erase_regions);
2163 sect_cnt = 0;
2164 sector = base;
2165 for (i = 0; i < num_erase_regions; i++) {
2166 if (i > NUM_ERASE_REGIONS) {
2167 printf("%d erase regions found, only %d used\n",
2168 num_erase_regions, NUM_ERASE_REGIONS);
2169 break;
2170 }
2171
2172 tmp = le32_to_cpu(get_unaligned(
2173 &(qry.erase_region_info[i])));
2174 debug("erase region %u: 0x%08lx\n", i, tmp);
2175
2176 erase_region_count = (tmp & 0xffff) + 1;
2177 tmp >>= 16;
2178 erase_region_size =
2179 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
2180 debug("erase_region_count = %d erase_region_size = %d\n",
2181 erase_region_count, erase_region_size);
2182 for (j = 0; j < erase_region_count; j++) {
2183 if (sector - base >= info->size)
2184 break;
2185 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
2186 printf("ERROR: too many flash sectors\n");
2187 break;
2188 }
2189 info->start[sect_cnt] =
2190 (ulong)map_physmem(sector,
2191 info->portwidth,
2192 MAP_NOCACHE);
2193 sector += (erase_region_size * size_ratio);
2194
2195 /*
2196 * Only read protection status from
2197 * supported devices (intel...)
2198 */
2199 switch (info->vendor) {
2200 case CFI_CMDSET_INTEL_PROG_REGIONS:
2201 case CFI_CMDSET_INTEL_EXTENDED:
2202 case CFI_CMDSET_INTEL_STANDARD:
2203 /*
2204 * Set flash to read-id mode. Otherwise
2205 * reading protected status is not
2206 * guaranteed.
2207 */
2208 flash_write_cmd(info, sect_cnt, 0,
2209 FLASH_CMD_READ_ID);
2210 info->protect[sect_cnt] =
2211 flash_isset(info, sect_cnt,
2212 FLASH_OFFSET_PROTECT,
2213 FLASH_STATUS_PROTECT);
2214 flash_write_cmd(info, sect_cnt, 0,
2215 FLASH_CMD_RESET);
2216 break;
2217 case CFI_CMDSET_AMD_EXTENDED:
2218 case CFI_CMDSET_AMD_STANDARD:
2219 if (!info->legacy_unlock) {
2220 /* default: not protected */
2221 info->protect[sect_cnt] = 0;
2222 break;
2223 }
2224
2225 /* Read protection (PPB) from sector */
2226 flash_write_cmd(info, 0, 0,
2227 info->cmd_reset);
2228 flash_unlock_seq(info, 0);
2229 flash_write_cmd(info, 0,
2230 info->addr_unlock1,
2231 FLASH_CMD_READ_ID);
2232 info->protect[sect_cnt] =
2233 flash_isset(
2234 info, sect_cnt,
2235 FLASH_OFFSET_PROTECT,
2236 FLASH_STATUS_PROTECT);
2237 break;
2238 default:
2239 /* default: not protected */
2240 info->protect[sect_cnt] = 0;
2241 }
2242
2243 sect_cnt++;
2244 }
2245 }
2246
2247 info->sector_count = sect_cnt;
2248 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2249 tmp = 1 << qry.block_erase_timeout_typ;
2250 info->erase_blk_tout = tmp *
2251 (1 << qry.block_erase_timeout_max);
2252 tmp = (1 << qry.buf_write_timeout_typ) *
2253 (1 << qry.buf_write_timeout_max);
2254
2255 /* round up when converting to ms */
2256 info->buffer_write_tout = (tmp + 999) / 1000;
2257 tmp = (1 << qry.word_write_timeout_typ) *
2258 (1 << qry.word_write_timeout_max);
2259 /* round up when converting to ms */
2260 info->write_tout = (tmp + 999) / 1000;
2261 info->flash_id = FLASH_MAN_CFI;
2262 if ((info->interface == FLASH_CFI_X8X16) &&
2263 (info->chipwidth == FLASH_CFI_BY8)) {
2264 /* XXX - Need to test on x8/x16 in parallel. */
2265 info->portwidth >>= 1;
2266 }
2267
2268 flash_write_cmd(info, 0, 0, info->cmd_reset);
2269 }
2270
2271 return (info->size);
2272 }
2273
2274 #ifdef CONFIG_FLASH_CFI_MTD
2275 void flash_set_verbose(uint v)
2276 {
2277 flash_verbose = v;
2278 }
2279 #endif
2280
2281 static void cfi_flash_set_config_reg(u32 base, u16 val)
2282 {
2283 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2284 /*
2285 * Only set this config register if really defined
2286 * to a valid value (0xffff is invalid)
2287 */
2288 if (val == 0xffff)
2289 return;
2290
2291 /*
2292 * Set configuration register. Data is "encrypted" in the 16 lower
2293 * address bits.
2294 */
2295 flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2296 flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2297
2298 /*
2299 * Finally issue reset-command to bring device back to
2300 * read-array mode
2301 */
2302 flash_write16(FLASH_CMD_RESET, (void *)base);
2303 #endif
2304 }
2305
2306 /*-----------------------------------------------------------------------
2307 */
2308
2309 static void flash_protect_default(void)
2310 {
2311 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2312 int i;
2313 struct apl_s {
2314 ulong start;
2315 ulong size;
2316 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2317 #endif
2318
2319 /* Monitor protection ON by default */
2320 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2321 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2322 flash_protect(FLAG_PROTECT_SET,
2323 CONFIG_SYS_MONITOR_BASE,
2324 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
2325 flash_get_info(CONFIG_SYS_MONITOR_BASE));
2326 #endif
2327
2328 /* Environment protection ON by default */
2329 #ifdef CONFIG_ENV_IS_IN_FLASH
2330 flash_protect(FLAG_PROTECT_SET,
2331 CONFIG_ENV_ADDR,
2332 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2333 flash_get_info(CONFIG_ENV_ADDR));
2334 #endif
2335
2336 /* Redundant environment protection ON by default */
2337 #ifdef CONFIG_ENV_ADDR_REDUND
2338 flash_protect(FLAG_PROTECT_SET,
2339 CONFIG_ENV_ADDR_REDUND,
2340 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2341 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2342 #endif
2343
2344 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2345 for (i = 0; i < ARRAY_SIZE(apl); i++) {
2346 debug("autoprotecting from %08lx to %08lx\n",
2347 apl[i].start, apl[i].start + apl[i].size - 1);
2348 flash_protect(FLAG_PROTECT_SET,
2349 apl[i].start,
2350 apl[i].start + apl[i].size - 1,
2351 flash_get_info(apl[i].start));
2352 }
2353 #endif
2354 }
2355
2356 unsigned long flash_init(void)
2357 {
2358 unsigned long size = 0;
2359 int i;
2360
2361 #ifdef CONFIG_SYS_FLASH_PROTECTION
2362 /* read environment from EEPROM */
2363 char s[64];
2364
2365 env_get_f("unlock", s, sizeof(s));
2366 #endif
2367
2368 #ifdef CONFIG_CFI_FLASH /* for driver model */
2369 cfi_flash_init_dm();
2370 #endif
2371
2372 /* Init: no FLASHes known */
2373 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2374 flash_info[i].flash_id = FLASH_UNKNOWN;
2375
2376 /* Optionally write flash configuration register */
2377 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2378 cfi_flash_config_reg(i));
2379
2380 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2381 flash_get_size(cfi_flash_bank_addr(i), i);
2382 size += flash_info[i].size;
2383 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2384 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2385 printf("## Unknown flash on Bank %d "
2386 "- Size = 0x%08lx = %ld MB\n",
2387 i + 1, flash_info[i].size,
2388 flash_info[i].size >> 20);
2389 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2390 }
2391 #ifdef CONFIG_SYS_FLASH_PROTECTION
2392 else if (strcmp(s, "yes") == 0) {
2393 /*
2394 * Only the U-Boot image and it's environment
2395 * is protected, all other sectors are
2396 * unprotected (unlocked) if flash hardware
2397 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2398 * and the environment variable "unlock" is
2399 * set to "yes".
2400 */
2401 if (flash_info[i].legacy_unlock) {
2402 int k;
2403
2404 /*
2405 * Disable legacy_unlock temporarily,
2406 * since flash_real_protect would
2407 * relock all other sectors again
2408 * otherwise.
2409 */
2410 flash_info[i].legacy_unlock = 0;
2411
2412 /*
2413 * Legacy unlocking (e.g. Intel J3) ->
2414 * unlock only one sector. This will
2415 * unlock all sectors.
2416 */
2417 flash_real_protect(&flash_info[i], 0, 0);
2418
2419 flash_info[i].legacy_unlock = 1;
2420
2421 /*
2422 * Manually mark other sectors as
2423 * unlocked (unprotected)
2424 */
2425 for (k = 1; k < flash_info[i].sector_count; k++)
2426 flash_info[i].protect[k] = 0;
2427 } else {
2428 /*
2429 * No legancy unlocking -> unlock all sectors
2430 */
2431 flash_protect(FLAG_PROTECT_CLEAR,
2432 flash_info[i].start[0],
2433 flash_info[i].start[0]
2434 + flash_info[i].size - 1,
2435 &flash_info[i]);
2436 }
2437 }
2438 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2439 }
2440
2441 flash_protect_default();
2442 #ifdef CONFIG_FLASH_CFI_MTD
2443 cfi_mtd_init();
2444 #endif
2445
2446 return (size);
2447 }
2448
2449 #ifdef CONFIG_CFI_FLASH /* for driver model */
2450 static int cfi_flash_probe(struct udevice *dev)
2451 {
2452 void *blob = (void *)gd->fdt_blob;
2453 int node = dev_of_offset(dev);
2454 const fdt32_t *cell;
2455 phys_addr_t addr;
2456 int parent, addrc, sizec;
2457 int len, idx;
2458
2459 parent = fdt_parent_offset(blob, node);
2460 fdt_support_default_count_cells(blob, parent, &addrc, &sizec);
2461 /* decode regs, there may be multiple reg tuples. */
2462 cell = fdt_getprop(blob, node, "reg", &len);
2463 if (!cell)
2464 return -ENOENT;
2465 idx = 0;
2466 len /= sizeof(fdt32_t);
2467 while (idx < len) {
2468 addr = fdt_translate_address((void *)blob,
2469 node, cell + idx);
2470 flash_info[cfi_flash_num_flash_banks].dev = dev;
2471 flash_info[cfi_flash_num_flash_banks].base = addr;
2472 cfi_flash_num_flash_banks++;
2473 idx += addrc + sizec;
2474 }
2475 gd->bd->bi_flashstart = flash_info[0].base;
2476
2477 return 0;
2478 }
2479
2480 static const struct udevice_id cfi_flash_ids[] = {
2481 { .compatible = "cfi-flash" },
2482 { .compatible = "jedec-flash" },
2483 {}
2484 };
2485
2486 U_BOOT_DRIVER(cfi_flash) = {
2487 .name = "cfi_flash",
2488 .id = UCLASS_MTD,
2489 .of_match = cfi_flash_ids,
2490 .probe = cfi_flash_probe,
2491 };
2492 #endif /* CONFIG_CFI_FLASH */
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