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env: Rename environment.h to env_internal.h
[thirdparty/u-boot.git] / drivers / mtd / cfi_flash.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2002-2004
4 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
5 *
6 * Copyright (C) 2003 Arabella Software Ltd.
7 * Yuli Barcohen <yuli@arabellasw.com>
8 *
9 * Copyright (C) 2004
10 * Ed Okerson
11 *
12 * Copyright (C) 2006
13 * Tolunay Orkun <listmember@orkun.us>
14 */
15
16 /* The DEBUG define must be before common to enable debugging */
17 /* #define DEBUG */
18
19 #include <common.h>
20 #include <console.h>
21 #include <dm.h>
22 #include <env.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 <env_internal.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 #else
95 int cfi_flash_num_flash_banks;
96 #endif
97
98 #ifdef CONFIG_CFI_FLASH /* for driver model */
99 static void cfi_flash_init_dm(void)
100 {
101 struct udevice *dev;
102
103 cfi_flash_num_flash_banks = 0;
104 /*
105 * The uclass_first_device() will probe the first device and
106 * uclass_next_device() will probe the rest if they exist. So
107 * that cfi_flash_probe() will get called assigning the base
108 * addresses that are available.
109 */
110 for (uclass_first_device(UCLASS_MTD, &dev);
111 dev;
112 uclass_next_device(&dev)) {
113 }
114 }
115
116 phys_addr_t cfi_flash_bank_addr(int i)
117 {
118 return flash_info[i].base;
119 }
120 #else
121 __weak phys_addr_t cfi_flash_bank_addr(int i)
122 {
123 return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
124 }
125 #endif
126
127 __weak unsigned long cfi_flash_bank_size(int i)
128 {
129 #ifdef CONFIG_SYS_FLASH_BANKS_SIZES
130 return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i];
131 #else
132 return 0;
133 #endif
134 }
135
136 __maybe_weak void flash_write8(u8 value, void *addr)
137 {
138 __raw_writeb(value, addr);
139 }
140
141 __maybe_weak void flash_write16(u16 value, void *addr)
142 {
143 __raw_writew(value, addr);
144 }
145
146 __maybe_weak void flash_write32(u32 value, void *addr)
147 {
148 __raw_writel(value, addr);
149 }
150
151 __maybe_weak void flash_write64(u64 value, void *addr)
152 {
153 /* No architectures currently implement __raw_writeq() */
154 *(volatile u64 *)addr = value;
155 }
156
157 __maybe_weak u8 flash_read8(void *addr)
158 {
159 return __raw_readb(addr);
160 }
161
162 __maybe_weak u16 flash_read16(void *addr)
163 {
164 return __raw_readw(addr);
165 }
166
167 __maybe_weak u32 flash_read32(void *addr)
168 {
169 return __raw_readl(addr);
170 }
171
172 __maybe_weak u64 flash_read64(void *addr)
173 {
174 /* No architectures currently implement __raw_readq() */
175 return *(volatile u64 *)addr;
176 }
177
178 /*-----------------------------------------------------------------------
179 */
180 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || \
181 (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
182 static flash_info_t *flash_get_info(ulong base)
183 {
184 int i;
185 flash_info_t *info;
186
187 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
188 info = &flash_info[i];
189 if (info->size && info->start[0] <= base &&
190 base <= info->start[0] + info->size - 1)
191 return info;
192 }
193
194 return NULL;
195 }
196 #endif
197
198 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
199 {
200 if (sect != (info->sector_count - 1))
201 return info->start[sect + 1] - info->start[sect];
202 else
203 return info->start[0] + info->size - info->start[sect];
204 }
205
206 /*-----------------------------------------------------------------------
207 * create an address based on the offset and the port width
208 */
209 static inline void *
210 flash_map(flash_info_t *info, flash_sect_t sect, uint offset)
211 {
212 unsigned int byte_offset = offset * info->portwidth;
213
214 return (void *)(info->start[sect] + byte_offset);
215 }
216
217 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
218 unsigned int offset, void *addr)
219 {
220 }
221
222 /*-----------------------------------------------------------------------
223 * make a proper sized command based on the port and chip widths
224 */
225 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
226 {
227 int i;
228 int cword_offset;
229 int cp_offset;
230 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
231 u32 cmd_le = cpu_to_le32(cmd);
232 #endif
233 uchar val;
234 uchar *cp = (uchar *) cmdbuf;
235
236 for (i = info->portwidth; i > 0; i--) {
237 cword_offset = (info->portwidth - i) % info->chipwidth;
238 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
239 cp_offset = info->portwidth - i;
240 val = *((uchar *)&cmd_le + cword_offset);
241 #else
242 cp_offset = i - 1;
243 val = *((uchar *)&cmd + sizeof(u32) - cword_offset - 1);
244 #endif
245 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
246 }
247 }
248
249 #ifdef DEBUG
250 /*-----------------------------------------------------------------------
251 * Debug support
252 */
253 static void print_longlong(char *str, unsigned long long data)
254 {
255 int i;
256 char *cp;
257
258 cp = (char *)&data;
259 for (i = 0; i < 8; i++)
260 sprintf(&str[i * 2], "%2.2x", *cp++);
261 }
262
263 static void flash_printqry(struct cfi_qry *qry)
264 {
265 u8 *p = (u8 *)qry;
266 int x, y;
267
268 for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
269 debug("%02x : ", x);
270 for (y = 0; y < 16; y++)
271 debug("%2.2x ", p[x + y]);
272 debug(" ");
273 for (y = 0; y < 16; y++) {
274 unsigned char c = p[x + y];
275
276 if (c >= 0x20 && c <= 0x7e)
277 debug("%c", c);
278 else
279 debug(".");
280 }
281 debug("\n");
282 }
283 }
284 #endif
285
286 /*-----------------------------------------------------------------------
287 * read a character at a port width address
288 */
289 static inline uchar flash_read_uchar(flash_info_t *info, uint offset)
290 {
291 uchar *cp;
292 uchar retval;
293
294 cp = flash_map(info, 0, offset);
295 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
296 retval = flash_read8(cp);
297 #else
298 retval = flash_read8(cp + info->portwidth - 1);
299 #endif
300 flash_unmap(info, 0, offset, cp);
301 return retval;
302 }
303
304 /*-----------------------------------------------------------------------
305 * read a word at a port width address, assume 16bit bus
306 */
307 static inline ushort flash_read_word(flash_info_t *info, uint offset)
308 {
309 ushort *addr, retval;
310
311 addr = flash_map(info, 0, offset);
312 retval = flash_read16(addr);
313 flash_unmap(info, 0, offset, addr);
314 return retval;
315 }
316
317 /*-----------------------------------------------------------------------
318 * read a long word by picking the least significant byte of each maximum
319 * port size word. Swap for ppc format.
320 */
321 static ulong flash_read_long (flash_info_t *info, flash_sect_t sect,
322 uint offset)
323 {
324 uchar *addr;
325 ulong retval;
326
327 #ifdef DEBUG
328 int x;
329 #endif
330 addr = flash_map(info, sect, offset);
331
332 #ifdef DEBUG
333 debug("long addr is at %p info->portwidth = %d\n", addr,
334 info->portwidth);
335 for (x = 0; x < 4 * info->portwidth; x++)
336 debug("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
337 #endif
338 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
339 retval = ((flash_read8(addr) << 16) |
340 (flash_read8(addr + info->portwidth) << 24) |
341 (flash_read8(addr + 2 * info->portwidth)) |
342 (flash_read8(addr + 3 * info->portwidth) << 8));
343 #else
344 retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
345 (flash_read8(addr + info->portwidth - 1) << 16) |
346 (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
347 (flash_read8(addr + 3 * info->portwidth - 1)));
348 #endif
349 flash_unmap(info, sect, offset, addr);
350
351 return retval;
352 }
353
354 /*
355 * Write a proper sized command to the correct address
356 */
357 static void flash_write_cmd(flash_info_t *info, flash_sect_t sect,
358 uint offset, u32 cmd)
359 {
360 void *addr;
361 cfiword_t cword;
362
363 addr = flash_map(info, sect, offset);
364 flash_make_cmd(info, cmd, &cword);
365 switch (info->portwidth) {
366 case FLASH_CFI_8BIT:
367 debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
368 cword.w8, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
369 flash_write8(cword.w8, addr);
370 break;
371 case FLASH_CFI_16BIT:
372 debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
373 cmd, cword.w16,
374 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
375 flash_write16(cword.w16, addr);
376 break;
377 case FLASH_CFI_32BIT:
378 debug("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr,
379 cmd, cword.w32,
380 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
381 flash_write32(cword.w32, addr);
382 break;
383 case FLASH_CFI_64BIT:
384 #ifdef DEBUG
385 {
386 char str[20];
387
388 print_longlong(str, cword.w64);
389
390 debug("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
391 addr, cmd, str,
392 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
393 }
394 #endif
395 flash_write64(cword.w64, addr);
396 break;
397 }
398
399 /* Ensure all the instructions are fully finished */
400 sync();
401
402 flash_unmap(info, sect, offset, addr);
403 }
404
405 static void flash_unlock_seq(flash_info_t *info, flash_sect_t sect)
406 {
407 flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
408 flash_write_cmd(info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
409 }
410
411 /*-----------------------------------------------------------------------
412 */
413 static int flash_isequal(flash_info_t *info, flash_sect_t sect, uint offset,
414 uchar cmd)
415 {
416 void *addr;
417 cfiword_t cword;
418 int retval;
419
420 addr = flash_map(info, sect, offset);
421 flash_make_cmd(info, cmd, &cword);
422
423 debug("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
424 switch (info->portwidth) {
425 case FLASH_CFI_8BIT:
426 debug("is= %x %x\n", flash_read8(addr), cword.w8);
427 retval = (flash_read8(addr) == cword.w8);
428 break;
429 case FLASH_CFI_16BIT:
430 debug("is= %4.4x %4.4x\n", flash_read16(addr), cword.w16);
431 retval = (flash_read16(addr) == cword.w16);
432 break;
433 case FLASH_CFI_32BIT:
434 debug("is= %8.8x %8.8x\n", flash_read32(addr), cword.w32);
435 retval = (flash_read32(addr) == cword.w32);
436 break;
437 case FLASH_CFI_64BIT:
438 #ifdef DEBUG
439 {
440 char str1[20];
441 char str2[20];
442
443 print_longlong(str1, flash_read64(addr));
444 print_longlong(str2, cword.w64);
445 debug("is= %s %s\n", str1, str2);
446 }
447 #endif
448 retval = (flash_read64(addr) == cword.w64);
449 break;
450 default:
451 retval = 0;
452 break;
453 }
454 flash_unmap(info, sect, offset, addr);
455
456 return retval;
457 }
458
459 /*-----------------------------------------------------------------------
460 */
461 static int flash_isset(flash_info_t *info, flash_sect_t sect, uint offset,
462 uchar cmd)
463 {
464 void *addr;
465 cfiword_t cword;
466 int retval;
467
468 addr = flash_map(info, sect, offset);
469 flash_make_cmd(info, cmd, &cword);
470 switch (info->portwidth) {
471 case FLASH_CFI_8BIT:
472 retval = ((flash_read8(addr) & cword.w8) == cword.w8);
473 break;
474 case FLASH_CFI_16BIT:
475 retval = ((flash_read16(addr) & cword.w16) == cword.w16);
476 break;
477 case FLASH_CFI_32BIT:
478 retval = ((flash_read32(addr) & cword.w32) == cword.w32);
479 break;
480 case FLASH_CFI_64BIT:
481 retval = ((flash_read64(addr) & cword.w64) == cword.w64);
482 break;
483 default:
484 retval = 0;
485 break;
486 }
487 flash_unmap(info, sect, offset, addr);
488
489 return retval;
490 }
491
492 /*-----------------------------------------------------------------------
493 */
494 static int flash_toggle(flash_info_t *info, flash_sect_t sect, uint offset,
495 uchar cmd)
496 {
497 u8 *addr;
498 cfiword_t cword;
499 int retval;
500
501 addr = flash_map(info, sect, offset);
502 flash_make_cmd(info, cmd, &cword);
503 switch (info->portwidth) {
504 case FLASH_CFI_8BIT:
505 retval = flash_read8(addr) != flash_read8(addr);
506 break;
507 case FLASH_CFI_16BIT:
508 retval = flash_read16(addr) != flash_read16(addr);
509 break;
510 case FLASH_CFI_32BIT:
511 retval = flash_read32(addr) != flash_read32(addr);
512 break;
513 case FLASH_CFI_64BIT:
514 retval = ((flash_read32(addr) != flash_read32(addr)) ||
515 (flash_read32(addr + 4) != flash_read32(addr + 4)));
516 break;
517 default:
518 retval = 0;
519 break;
520 }
521 flash_unmap(info, sect, offset, addr);
522
523 return retval;
524 }
525
526 /*
527 * flash_is_busy - check to see if the flash is busy
528 *
529 * This routine checks the status of the chip and returns true if the
530 * chip is busy.
531 */
532 static int flash_is_busy(flash_info_t *info, flash_sect_t sect)
533 {
534 int retval;
535
536 switch (info->vendor) {
537 case CFI_CMDSET_INTEL_PROG_REGIONS:
538 case CFI_CMDSET_INTEL_STANDARD:
539 case CFI_CMDSET_INTEL_EXTENDED:
540 retval = !flash_isset(info, sect, 0, FLASH_STATUS_DONE);
541 break;
542 case CFI_CMDSET_AMD_STANDARD:
543 case CFI_CMDSET_AMD_EXTENDED:
544 #ifdef CONFIG_FLASH_CFI_LEGACY
545 case CFI_CMDSET_AMD_LEGACY:
546 #endif
547 if (info->sr_supported) {
548 flash_write_cmd(info, sect, info->addr_unlock1,
549 FLASH_CMD_READ_STATUS);
550 retval = !flash_isset(info, sect, 0,
551 FLASH_STATUS_DONE);
552 } else {
553 retval = flash_toggle(info, sect, 0,
554 AMD_STATUS_TOGGLE);
555 }
556
557 break;
558 default:
559 retval = 0;
560 }
561 debug("%s: %d\n", __func__, retval);
562 return retval;
563 }
564
565 /*-----------------------------------------------------------------------
566 * wait for XSR.7 to be set. Time out with an error if it does not.
567 * This routine does not set the flash to read-array mode.
568 */
569 static int flash_status_check(flash_info_t *info, flash_sect_t sector,
570 ulong tout, char *prompt)
571 {
572 ulong start;
573
574 #if CONFIG_SYS_HZ != 1000
575 /* Avoid overflow for large HZ */
576 if ((ulong)CONFIG_SYS_HZ > 100000)
577 tout *= (ulong)CONFIG_SYS_HZ / 1000;
578 else
579 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
580 #endif
581
582 /* Wait for command completion */
583 #ifdef CONFIG_SYS_LOW_RES_TIMER
584 reset_timer();
585 #endif
586 start = get_timer(0);
587 WATCHDOG_RESET();
588 while (flash_is_busy(info, sector)) {
589 if (get_timer(start) > tout) {
590 printf("Flash %s timeout at address %lx data %lx\n",
591 prompt, info->start[sector],
592 flash_read_long(info, sector, 0));
593 flash_write_cmd(info, sector, 0, info->cmd_reset);
594 udelay(1);
595 return ERR_TIMEOUT;
596 }
597 udelay(1); /* also triggers watchdog */
598 }
599 return ERR_OK;
600 }
601
602 /*-----------------------------------------------------------------------
603 * Wait for XSR.7 to be set, if it times out print an error, otherwise
604 * do a full status check.
605 *
606 * This routine sets the flash to read-array mode.
607 */
608 static int flash_full_status_check(flash_info_t *info, flash_sect_t sector,
609 ulong tout, char *prompt)
610 {
611 int retcode;
612
613 retcode = flash_status_check(info, sector, tout, prompt);
614 switch (info->vendor) {
615 case CFI_CMDSET_INTEL_PROG_REGIONS:
616 case CFI_CMDSET_INTEL_EXTENDED:
617 case CFI_CMDSET_INTEL_STANDARD:
618 if (retcode == ERR_OK &&
619 !flash_isset(info, sector, 0, FLASH_STATUS_DONE)) {
620 retcode = ERR_INVAL;
621 printf("Flash %s error at address %lx\n", prompt,
622 info->start[sector]);
623 if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS |
624 FLASH_STATUS_PSLBS)) {
625 puts("Command Sequence Error.\n");
626 } else if (flash_isset(info, sector, 0,
627 FLASH_STATUS_ECLBS)) {
628 puts("Block Erase Error.\n");
629 retcode = ERR_NOT_ERASED;
630 } else if (flash_isset(info, sector, 0,
631 FLASH_STATUS_PSLBS)) {
632 puts("Locking Error\n");
633 }
634 if (flash_isset(info, sector, 0, FLASH_STATUS_DPS)) {
635 puts("Block locked.\n");
636 retcode = ERR_PROTECTED;
637 }
638 if (flash_isset(info, sector, 0, FLASH_STATUS_VPENS))
639 puts("Vpp Low Error.\n");
640 }
641 flash_write_cmd(info, sector, 0, info->cmd_reset);
642 udelay(1);
643 break;
644 default:
645 break;
646 }
647 return retcode;
648 }
649
650 static int use_flash_status_poll(flash_info_t *info)
651 {
652 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
653 if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
654 info->vendor == CFI_CMDSET_AMD_STANDARD)
655 return 1;
656 #endif
657 return 0;
658 }
659
660 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
661 ulong tout, char *prompt)
662 {
663 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
664 ulong start;
665 int ready;
666
667 #if CONFIG_SYS_HZ != 1000
668 /* Avoid overflow for large HZ */
669 if ((ulong)CONFIG_SYS_HZ > 100000)
670 tout *= (ulong)CONFIG_SYS_HZ / 1000;
671 else
672 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
673 #endif
674
675 /* Wait for command completion */
676 #ifdef CONFIG_SYS_LOW_RES_TIMER
677 reset_timer();
678 #endif
679 start = get_timer(0);
680 WATCHDOG_RESET();
681 while (1) {
682 switch (info->portwidth) {
683 case FLASH_CFI_8BIT:
684 ready = flash_read8(dst) == flash_read8(src);
685 break;
686 case FLASH_CFI_16BIT:
687 ready = flash_read16(dst) == flash_read16(src);
688 break;
689 case FLASH_CFI_32BIT:
690 ready = flash_read32(dst) == flash_read32(src);
691 break;
692 case FLASH_CFI_64BIT:
693 ready = flash_read64(dst) == flash_read64(src);
694 break;
695 default:
696 ready = 0;
697 break;
698 }
699 if (ready)
700 break;
701 if (get_timer(start) > tout) {
702 printf("Flash %s timeout at address %lx data %lx\n",
703 prompt, (ulong)dst, (ulong)flash_read8(dst));
704 return ERR_TIMEOUT;
705 }
706 udelay(1); /* also triggers watchdog */
707 }
708 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
709 return ERR_OK;
710 }
711
712 /*-----------------------------------------------------------------------
713 */
714 static void flash_add_byte(flash_info_t *info, cfiword_t *cword, uchar c)
715 {
716 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
717 unsigned short w;
718 unsigned int l;
719 unsigned long long ll;
720 #endif
721
722 switch (info->portwidth) {
723 case FLASH_CFI_8BIT:
724 cword->w8 = c;
725 break;
726 case FLASH_CFI_16BIT:
727 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
728 w = c;
729 w <<= 8;
730 cword->w16 = (cword->w16 >> 8) | w;
731 #else
732 cword->w16 = (cword->w16 << 8) | c;
733 #endif
734 break;
735 case FLASH_CFI_32BIT:
736 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
737 l = c;
738 l <<= 24;
739 cword->w32 = (cword->w32 >> 8) | l;
740 #else
741 cword->w32 = (cword->w32 << 8) | c;
742 #endif
743 break;
744 case FLASH_CFI_64BIT:
745 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
746 ll = c;
747 ll <<= 56;
748 cword->w64 = (cword->w64 >> 8) | ll;
749 #else
750 cword->w64 = (cword->w64 << 8) | c;
751 #endif
752 break;
753 }
754 }
755
756 /*
757 * Loop through the sector table starting from the previously found sector.
758 * Searches forwards or backwards, dependent on the passed address.
759 */
760 static flash_sect_t find_sector(flash_info_t *info, ulong addr)
761 {
762 static flash_sect_t saved_sector; /* previously found sector */
763 static flash_info_t *saved_info; /* previously used flash bank */
764 flash_sect_t sector = saved_sector;
765
766 if (info != saved_info || sector >= info->sector_count)
767 sector = 0;
768
769 while ((sector < info->sector_count - 1) &&
770 (info->start[sector] < addr))
771 sector++;
772 while ((info->start[sector] > addr) && (sector > 0))
773 /*
774 * also decrements the sector in case of an overshot
775 * in the first loop
776 */
777 sector--;
778
779 saved_sector = sector;
780 saved_info = info;
781 return sector;
782 }
783
784 /*-----------------------------------------------------------------------
785 */
786 static int flash_write_cfiword(flash_info_t *info, ulong dest, cfiword_t cword)
787 {
788 void *dstaddr = (void *)dest;
789 int flag;
790 flash_sect_t sect = 0;
791 char sect_found = 0;
792
793 /* Check if Flash is (sufficiently) erased */
794 switch (info->portwidth) {
795 case FLASH_CFI_8BIT:
796 flag = ((flash_read8(dstaddr) & cword.w8) == cword.w8);
797 break;
798 case FLASH_CFI_16BIT:
799 flag = ((flash_read16(dstaddr) & cword.w16) == cword.w16);
800 break;
801 case FLASH_CFI_32BIT:
802 flag = ((flash_read32(dstaddr) & cword.w32) == cword.w32);
803 break;
804 case FLASH_CFI_64BIT:
805 flag = ((flash_read64(dstaddr) & cword.w64) == cword.w64);
806 break;
807 default:
808 flag = 0;
809 break;
810 }
811 if (!flag)
812 return ERR_NOT_ERASED;
813
814 /* Disable interrupts which might cause a timeout here */
815 flag = disable_interrupts();
816
817 switch (info->vendor) {
818 case CFI_CMDSET_INTEL_PROG_REGIONS:
819 case CFI_CMDSET_INTEL_EXTENDED:
820 case CFI_CMDSET_INTEL_STANDARD:
821 flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS);
822 flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE);
823 break;
824 case CFI_CMDSET_AMD_EXTENDED:
825 case CFI_CMDSET_AMD_STANDARD:
826 sect = find_sector(info, dest);
827 flash_unlock_seq(info, sect);
828 flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_WRITE);
829 sect_found = 1;
830 break;
831 #ifdef CONFIG_FLASH_CFI_LEGACY
832 case CFI_CMDSET_AMD_LEGACY:
833 sect = find_sector(info, dest);
834 flash_unlock_seq(info, 0);
835 flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_WRITE);
836 sect_found = 1;
837 break;
838 #endif
839 }
840
841 switch (info->portwidth) {
842 case FLASH_CFI_8BIT:
843 flash_write8(cword.w8, dstaddr);
844 break;
845 case FLASH_CFI_16BIT:
846 flash_write16(cword.w16, dstaddr);
847 break;
848 case FLASH_CFI_32BIT:
849 flash_write32(cword.w32, dstaddr);
850 break;
851 case FLASH_CFI_64BIT:
852 flash_write64(cword.w64, dstaddr);
853 break;
854 }
855
856 /* re-enable interrupts if necessary */
857 if (flag)
858 enable_interrupts();
859
860 if (!sect_found)
861 sect = find_sector(info, dest);
862
863 if (use_flash_status_poll(info))
864 return flash_status_poll(info, &cword, dstaddr,
865 info->write_tout, "write");
866 else
867 return flash_full_status_check(info, sect,
868 info->write_tout, "write");
869 }
870
871 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
872
873 static int flash_write_cfibuffer(flash_info_t *info, ulong dest, uchar *cp,
874 int len)
875 {
876 flash_sect_t sector;
877 int cnt;
878 int retcode;
879 u8 *src = cp;
880 u8 *dst = (u8 *)dest;
881 u8 *dst2 = dst;
882 int flag = 1;
883 uint offset = 0;
884 unsigned int shift;
885 uchar write_cmd;
886
887 switch (info->portwidth) {
888 case FLASH_CFI_8BIT:
889 shift = 0;
890 break;
891 case FLASH_CFI_16BIT:
892 shift = 1;
893 break;
894 case FLASH_CFI_32BIT:
895 shift = 2;
896 break;
897 case FLASH_CFI_64BIT:
898 shift = 3;
899 break;
900 default:
901 retcode = ERR_INVAL;
902 goto out_unmap;
903 }
904
905 cnt = len >> shift;
906
907 while ((cnt-- > 0) && (flag == 1)) {
908 switch (info->portwidth) {
909 case FLASH_CFI_8BIT:
910 flag = ((flash_read8(dst2) & flash_read8(src)) ==
911 flash_read8(src));
912 src += 1, dst2 += 1;
913 break;
914 case FLASH_CFI_16BIT:
915 flag = ((flash_read16(dst2) & flash_read16(src)) ==
916 flash_read16(src));
917 src += 2, dst2 += 2;
918 break;
919 case FLASH_CFI_32BIT:
920 flag = ((flash_read32(dst2) & flash_read32(src)) ==
921 flash_read32(src));
922 src += 4, dst2 += 4;
923 break;
924 case FLASH_CFI_64BIT:
925 flag = ((flash_read64(dst2) & flash_read64(src)) ==
926 flash_read64(src));
927 src += 8, dst2 += 8;
928 break;
929 }
930 }
931 if (!flag) {
932 retcode = ERR_NOT_ERASED;
933 goto out_unmap;
934 }
935
936 src = cp;
937 sector = find_sector(info, dest);
938
939 switch (info->vendor) {
940 case CFI_CMDSET_INTEL_PROG_REGIONS:
941 case CFI_CMDSET_INTEL_STANDARD:
942 case CFI_CMDSET_INTEL_EXTENDED:
943 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
944 FLASH_CMD_WRITE_BUFFER_PROG :
945 FLASH_CMD_WRITE_TO_BUFFER;
946 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
947 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
948 flash_write_cmd(info, sector, 0, write_cmd);
949 retcode = flash_status_check(info, sector,
950 info->buffer_write_tout,
951 "write to buffer");
952 if (retcode == ERR_OK) {
953 /* reduce the number of loops by the width of
954 * the port
955 */
956 cnt = len >> shift;
957 flash_write_cmd(info, sector, 0, cnt - 1);
958 while (cnt-- > 0) {
959 switch (info->portwidth) {
960 case FLASH_CFI_8BIT:
961 flash_write8(flash_read8(src), dst);
962 src += 1, dst += 1;
963 break;
964 case FLASH_CFI_16BIT:
965 flash_write16(flash_read16(src), dst);
966 src += 2, dst += 2;
967 break;
968 case FLASH_CFI_32BIT:
969 flash_write32(flash_read32(src), dst);
970 src += 4, dst += 4;
971 break;
972 case FLASH_CFI_64BIT:
973 flash_write64(flash_read64(src), dst);
974 src += 8, dst += 8;
975 break;
976 default:
977 retcode = ERR_INVAL;
978 goto out_unmap;
979 }
980 }
981 flash_write_cmd(info, sector, 0,
982 FLASH_CMD_WRITE_BUFFER_CONFIRM);
983 retcode = flash_full_status_check(
984 info, sector, info->buffer_write_tout,
985 "buffer write");
986 }
987
988 break;
989
990 case CFI_CMDSET_AMD_STANDARD:
991 case CFI_CMDSET_AMD_EXTENDED:
992 flash_unlock_seq(info, sector);
993
994 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
995 offset = ((unsigned long)dst - info->start[sector]) >> shift;
996 #endif
997 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
998 cnt = len >> shift;
999 flash_write_cmd(info, sector, offset, cnt - 1);
1000
1001 switch (info->portwidth) {
1002 case FLASH_CFI_8BIT:
1003 while (cnt-- > 0) {
1004 flash_write8(flash_read8(src), dst);
1005 src += 1, dst += 1;
1006 }
1007 break;
1008 case FLASH_CFI_16BIT:
1009 while (cnt-- > 0) {
1010 flash_write16(flash_read16(src), dst);
1011 src += 2, dst += 2;
1012 }
1013 break;
1014 case FLASH_CFI_32BIT:
1015 while (cnt-- > 0) {
1016 flash_write32(flash_read32(src), dst);
1017 src += 4, dst += 4;
1018 }
1019 break;
1020 case FLASH_CFI_64BIT:
1021 while (cnt-- > 0) {
1022 flash_write64(flash_read64(src), dst);
1023 src += 8, dst += 8;
1024 }
1025 break;
1026 default:
1027 retcode = ERR_INVAL;
1028 goto out_unmap;
1029 }
1030
1031 flash_write_cmd(info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1032 if (use_flash_status_poll(info))
1033 retcode = flash_status_poll(info, src - (1 << shift),
1034 dst - (1 << shift),
1035 info->buffer_write_tout,
1036 "buffer write");
1037 else
1038 retcode = flash_full_status_check(info, sector,
1039 info->buffer_write_tout,
1040 "buffer write");
1041 break;
1042
1043 default:
1044 debug("Unknown Command Set\n");
1045 retcode = ERR_INVAL;
1046 break;
1047 }
1048
1049 out_unmap:
1050 return retcode;
1051 }
1052 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1053
1054 /*-----------------------------------------------------------------------
1055 */
1056 int flash_erase(flash_info_t *info, int s_first, int s_last)
1057 {
1058 int rcode = 0;
1059 int prot;
1060 flash_sect_t sect;
1061 int st;
1062
1063 if (info->flash_id != FLASH_MAN_CFI) {
1064 puts("Can't erase unknown flash type - aborted\n");
1065 return 1;
1066 }
1067 if (s_first < 0 || s_first > s_last) {
1068 puts("- no sectors to erase\n");
1069 return 1;
1070 }
1071
1072 prot = 0;
1073 for (sect = s_first; sect <= s_last; ++sect)
1074 if (info->protect[sect])
1075 prot++;
1076 if (prot) {
1077 printf("- Warning: %d protected sectors will not be erased!\n",
1078 prot);
1079 } else if (flash_verbose) {
1080 putc('\n');
1081 }
1082
1083 for (sect = s_first; sect <= s_last; sect++) {
1084 if (ctrlc()) {
1085 printf("\n");
1086 return 1;
1087 }
1088
1089 if (info->protect[sect] == 0) { /* not protected */
1090 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1091 int k;
1092 int size;
1093 int erased;
1094 u32 *flash;
1095
1096 /*
1097 * Check if whole sector is erased
1098 */
1099 size = flash_sector_size(info, sect);
1100 erased = 1;
1101 flash = (u32 *)info->start[sect];
1102 /* divide by 4 for longword access */
1103 size = size >> 2;
1104 for (k = 0; k < size; k++) {
1105 if (flash_read32(flash++) != 0xffffffff) {
1106 erased = 0;
1107 break;
1108 }
1109 }
1110 if (erased) {
1111 if (flash_verbose)
1112 putc(',');
1113 continue;
1114 }
1115 #endif
1116 switch (info->vendor) {
1117 case CFI_CMDSET_INTEL_PROG_REGIONS:
1118 case CFI_CMDSET_INTEL_STANDARD:
1119 case CFI_CMDSET_INTEL_EXTENDED:
1120 flash_write_cmd(info, sect, 0,
1121 FLASH_CMD_CLEAR_STATUS);
1122 flash_write_cmd(info, sect, 0,
1123 FLASH_CMD_BLOCK_ERASE);
1124 flash_write_cmd(info, sect, 0,
1125 FLASH_CMD_ERASE_CONFIRM);
1126 break;
1127 case CFI_CMDSET_AMD_STANDARD:
1128 case CFI_CMDSET_AMD_EXTENDED:
1129 flash_unlock_seq(info, sect);
1130 flash_write_cmd(info, sect,
1131 info->addr_unlock1,
1132 AMD_CMD_ERASE_START);
1133 flash_unlock_seq(info, sect);
1134 flash_write_cmd(info, sect, 0,
1135 info->cmd_erase_sector);
1136 break;
1137 #ifdef CONFIG_FLASH_CFI_LEGACY
1138 case CFI_CMDSET_AMD_LEGACY:
1139 flash_unlock_seq(info, 0);
1140 flash_write_cmd(info, 0, info->addr_unlock1,
1141 AMD_CMD_ERASE_START);
1142 flash_unlock_seq(info, 0);
1143 flash_write_cmd(info, sect, 0,
1144 AMD_CMD_ERASE_SECTOR);
1145 break;
1146 #endif
1147 default:
1148 debug("Unknown flash vendor %d\n",
1149 info->vendor);
1150 break;
1151 }
1152
1153 if (use_flash_status_poll(info)) {
1154 cfiword_t cword;
1155 void *dest;
1156
1157 cword.w64 = 0xffffffffffffffffULL;
1158 dest = flash_map(info, sect, 0);
1159 st = flash_status_poll(info, &cword, dest,
1160 info->erase_blk_tout,
1161 "erase");
1162 flash_unmap(info, sect, 0, dest);
1163 } else {
1164 st = flash_full_status_check(info, sect,
1165 info->erase_blk_tout,
1166 "erase");
1167 }
1168
1169 if (st)
1170 rcode = 1;
1171 else if (flash_verbose)
1172 putc('.');
1173 }
1174 }
1175
1176 if (flash_verbose)
1177 puts(" done\n");
1178
1179 return rcode;
1180 }
1181
1182 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1183 static int sector_erased(flash_info_t *info, int i)
1184 {
1185 int k;
1186 int size;
1187 u32 *flash;
1188
1189 /*
1190 * Check if whole sector is erased
1191 */
1192 size = flash_sector_size(info, i);
1193 flash = (u32 *)info->start[i];
1194 /* divide by 4 for longword access */
1195 size = size >> 2;
1196
1197 for (k = 0; k < size; k++) {
1198 if (flash_read32(flash++) != 0xffffffff)
1199 return 0; /* not erased */
1200 }
1201
1202 return 1; /* erased */
1203 }
1204 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1205
1206 void flash_print_info(flash_info_t *info)
1207 {
1208 int i;
1209
1210 if (info->flash_id != FLASH_MAN_CFI) {
1211 puts("missing or unknown FLASH type\n");
1212 return;
1213 }
1214
1215 printf("%s flash (%d x %d)",
1216 info->name,
1217 (info->portwidth << 3), (info->chipwidth << 3));
1218 if (info->size < 1024 * 1024)
1219 printf(" Size: %ld kB in %d Sectors\n",
1220 info->size >> 10, info->sector_count);
1221 else
1222 printf(" Size: %ld MB in %d Sectors\n",
1223 info->size >> 20, info->sector_count);
1224 printf(" ");
1225 switch (info->vendor) {
1226 case CFI_CMDSET_INTEL_PROG_REGIONS:
1227 printf("Intel Prog Regions");
1228 break;
1229 case CFI_CMDSET_INTEL_STANDARD:
1230 printf("Intel Standard");
1231 break;
1232 case CFI_CMDSET_INTEL_EXTENDED:
1233 printf("Intel Extended");
1234 break;
1235 case CFI_CMDSET_AMD_STANDARD:
1236 printf("AMD Standard");
1237 break;
1238 case CFI_CMDSET_AMD_EXTENDED:
1239 printf("AMD Extended");
1240 break;
1241 #ifdef CONFIG_FLASH_CFI_LEGACY
1242 case CFI_CMDSET_AMD_LEGACY:
1243 printf("AMD Legacy");
1244 break;
1245 #endif
1246 default:
1247 printf("Unknown (%d)", info->vendor);
1248 break;
1249 }
1250 printf(" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1251 info->manufacturer_id);
1252 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1253 info->device_id);
1254 if ((info->device_id & 0xff) == 0x7E) {
1255 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1256 info->device_id2);
1257 }
1258 if (info->vendor == CFI_CMDSET_AMD_STANDARD && info->legacy_unlock)
1259 printf("\n Advanced Sector Protection (PPB) enabled");
1260 printf("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
1261 info->erase_blk_tout, info->write_tout);
1262 if (info->buffer_size > 1) {
1263 printf(" Buffer write timeout: %ld ms, ",
1264 info->buffer_write_tout);
1265 printf("buffer size: %d bytes\n", info->buffer_size);
1266 }
1267
1268 puts("\n Sector Start Addresses:");
1269 for (i = 0; i < info->sector_count; ++i) {
1270 if (ctrlc())
1271 break;
1272 if ((i % 5) == 0)
1273 putc('\n');
1274 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1275 /* print empty and read-only info */
1276 printf(" %08lX %c %s ",
1277 info->start[i],
1278 sector_erased(info, i) ? 'E' : ' ',
1279 info->protect[i] ? "RO" : " ");
1280 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1281 printf(" %08lX %s ",
1282 info->start[i],
1283 info->protect[i] ? "RO" : " ");
1284 #endif
1285 }
1286 putc('\n');
1287 }
1288
1289 /*-----------------------------------------------------------------------
1290 * This is used in a few places in write_buf() to show programming
1291 * progress. Making it a function is nasty because it needs to do side
1292 * effect updates to digit and dots. Repeated code is nasty too, so
1293 * we define it once here.
1294 */
1295 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1296 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1297 if (flash_verbose) { \
1298 dots -= dots_sub; \
1299 if (scale > 0 && dots <= 0) { \
1300 if ((digit % 5) == 0) \
1301 printf("%d", digit / 5); \
1302 else \
1303 putc('.'); \
1304 digit--; \
1305 dots += scale; \
1306 } \
1307 }
1308 #else
1309 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1310 #endif
1311
1312 /*-----------------------------------------------------------------------
1313 * Copy memory to flash, returns:
1314 * 0 - OK
1315 * 1 - write timeout
1316 * 2 - Flash not erased
1317 */
1318 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
1319 {
1320 ulong wp;
1321 uchar *p;
1322 int aln;
1323 cfiword_t cword;
1324 int i, rc;
1325 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1326 int buffered_size;
1327 #endif
1328 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1329 int digit = CONFIG_FLASH_SHOW_PROGRESS;
1330 int scale = 0;
1331 int dots = 0;
1332
1333 /*
1334 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1335 */
1336 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1337 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1338 CONFIG_FLASH_SHOW_PROGRESS);
1339 }
1340 #endif
1341
1342 /* get lower aligned address */
1343 wp = (addr & ~(info->portwidth - 1));
1344
1345 /* handle unaligned start */
1346 aln = addr - wp;
1347 if (aln != 0) {
1348 cword.w32 = 0;
1349 p = (uchar *)wp;
1350 for (i = 0; i < aln; ++i)
1351 flash_add_byte(info, &cword, flash_read8(p + i));
1352
1353 for (; (i < info->portwidth) && (cnt > 0); i++) {
1354 flash_add_byte(info, &cword, *src++);
1355 cnt--;
1356 }
1357 for (; (cnt == 0) && (i < info->portwidth); ++i)
1358 flash_add_byte(info, &cword, flash_read8(p + i));
1359
1360 rc = flash_write_cfiword(info, wp, cword);
1361 if (rc != 0)
1362 return rc;
1363
1364 wp += i;
1365 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1366 }
1367
1368 /* handle the aligned part */
1369 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1370 buffered_size = (info->portwidth / info->chipwidth);
1371 buffered_size *= info->buffer_size;
1372 while (cnt >= info->portwidth) {
1373 /* prohibit buffer write when buffer_size is 1 */
1374 if (info->buffer_size == 1) {
1375 cword.w32 = 0;
1376 for (i = 0; i < info->portwidth; i++)
1377 flash_add_byte(info, &cword, *src++);
1378 rc = flash_write_cfiword(info, wp, cword);
1379 if (rc != 0)
1380 return rc;
1381 wp += info->portwidth;
1382 cnt -= info->portwidth;
1383 continue;
1384 }
1385
1386 /* write buffer until next buffered_size aligned boundary */
1387 i = buffered_size - (wp % buffered_size);
1388 if (i > cnt)
1389 i = cnt;
1390 rc = flash_write_cfibuffer(info, wp, src, i);
1391 if (rc != ERR_OK)
1392 return rc;
1393 i -= i & (info->portwidth - 1);
1394 wp += i;
1395 src += i;
1396 cnt -= i;
1397 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1398 /* Only check every once in a while */
1399 if ((cnt & 0xFFFF) < buffered_size && ctrlc())
1400 return ERR_ABORTED;
1401 }
1402 #else
1403 while (cnt >= info->portwidth) {
1404 cword.w32 = 0;
1405 for (i = 0; i < info->portwidth; i++)
1406 flash_add_byte(info, &cword, *src++);
1407 rc = flash_write_cfiword(info, wp, cword);
1408 if (rc != 0)
1409 return rc;
1410 wp += info->portwidth;
1411 cnt -= info->portwidth;
1412 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1413 /* Only check every once in a while */
1414 if ((cnt & 0xFFFF) < info->portwidth && ctrlc())
1415 return ERR_ABORTED;
1416 }
1417 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1418
1419 if (cnt == 0)
1420 return (0);
1421
1422 /*
1423 * handle unaligned tail bytes
1424 */
1425 cword.w32 = 0;
1426 p = (uchar *)wp;
1427 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1428 flash_add_byte(info, &cword, *src++);
1429 --cnt;
1430 }
1431 for (; i < info->portwidth; ++i)
1432 flash_add_byte(info, &cword, flash_read8(p + i));
1433
1434 return flash_write_cfiword(info, wp, cword);
1435 }
1436
1437 static inline int manufact_match(flash_info_t *info, u32 manu)
1438 {
1439 return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16);
1440 }
1441
1442 /*-----------------------------------------------------------------------
1443 */
1444 #ifdef CONFIG_SYS_FLASH_PROTECTION
1445
1446 static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
1447 {
1448 if (manufact_match(info, INTEL_MANUFACT) &&
1449 info->device_id == NUMONYX_256MBIT) {
1450 /*
1451 * see errata called
1452 * "Numonyx Axcell P33/P30 Specification Update" :)
1453 */
1454 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
1455 if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
1456 prot)) {
1457 /*
1458 * cmd must come before FLASH_CMD_PROTECT + 20us
1459 * Disable interrupts which might cause a timeout here.
1460 */
1461 int flag = disable_interrupts();
1462 unsigned short cmd;
1463
1464 if (prot)
1465 cmd = FLASH_CMD_PROTECT_SET;
1466 else
1467 cmd = FLASH_CMD_PROTECT_CLEAR;
1468
1469 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1470 flash_write_cmd(info, sector, 0, cmd);
1471 /* re-enable interrupts if necessary */
1472 if (flag)
1473 enable_interrupts();
1474 }
1475 return 1;
1476 }
1477 return 0;
1478 }
1479
1480 int flash_real_protect(flash_info_t *info, long sector, int prot)
1481 {
1482 int retcode = 0;
1483
1484 switch (info->vendor) {
1485 case CFI_CMDSET_INTEL_PROG_REGIONS:
1486 case CFI_CMDSET_INTEL_STANDARD:
1487 case CFI_CMDSET_INTEL_EXTENDED:
1488 if (!cfi_protect_bugfix(info, sector, prot)) {
1489 flash_write_cmd(info, sector, 0,
1490 FLASH_CMD_CLEAR_STATUS);
1491 flash_write_cmd(info, sector, 0,
1492 FLASH_CMD_PROTECT);
1493 if (prot)
1494 flash_write_cmd(info, sector, 0,
1495 FLASH_CMD_PROTECT_SET);
1496 else
1497 flash_write_cmd(info, sector, 0,
1498 FLASH_CMD_PROTECT_CLEAR);
1499 }
1500 break;
1501 case CFI_CMDSET_AMD_EXTENDED:
1502 case CFI_CMDSET_AMD_STANDARD:
1503 /* U-Boot only checks the first byte */
1504 if (manufact_match(info, ATM_MANUFACT)) {
1505 if (prot) {
1506 flash_unlock_seq(info, 0);
1507 flash_write_cmd(info, 0,
1508 info->addr_unlock1,
1509 ATM_CMD_SOFTLOCK_START);
1510 flash_unlock_seq(info, 0);
1511 flash_write_cmd(info, sector, 0,
1512 ATM_CMD_LOCK_SECT);
1513 } else {
1514 flash_write_cmd(info, 0,
1515 info->addr_unlock1,
1516 AMD_CMD_UNLOCK_START);
1517 if (info->device_id == ATM_ID_BV6416)
1518 flash_write_cmd(info, sector,
1519 0, ATM_CMD_UNLOCK_SECT);
1520 }
1521 }
1522 if (info->legacy_unlock) {
1523 int flag = disable_interrupts();
1524 int lock_flag;
1525
1526 flash_unlock_seq(info, 0);
1527 flash_write_cmd(info, 0, info->addr_unlock1,
1528 AMD_CMD_SET_PPB_ENTRY);
1529 lock_flag = flash_isset(info, sector, 0, 0x01);
1530 if (prot) {
1531 if (lock_flag) {
1532 flash_write_cmd(info, sector, 0,
1533 AMD_CMD_PPB_LOCK_BC1);
1534 flash_write_cmd(info, sector, 0,
1535 AMD_CMD_PPB_LOCK_BC2);
1536 }
1537 debug("sector %ld %slocked\n", sector,
1538 lock_flag ? "" : "already ");
1539 } else {
1540 if (!lock_flag) {
1541 debug("unlock %ld\n", sector);
1542 flash_write_cmd(info, 0, 0,
1543 AMD_CMD_PPB_UNLOCK_BC1);
1544 flash_write_cmd(info, 0, 0,
1545 AMD_CMD_PPB_UNLOCK_BC2);
1546 }
1547 debug("sector %ld %sunlocked\n", sector,
1548 !lock_flag ? "" : "already ");
1549 }
1550 if (flag)
1551 enable_interrupts();
1552
1553 if (flash_status_check(info, sector,
1554 info->erase_blk_tout,
1555 prot ? "protect" : "unprotect"))
1556 printf("status check error\n");
1557
1558 flash_write_cmd(info, 0, 0,
1559 AMD_CMD_SET_PPB_EXIT_BC1);
1560 flash_write_cmd(info, 0, 0,
1561 AMD_CMD_SET_PPB_EXIT_BC2);
1562 }
1563 break;
1564 #ifdef CONFIG_FLASH_CFI_LEGACY
1565 case CFI_CMDSET_AMD_LEGACY:
1566 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1567 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1568 if (prot)
1569 flash_write_cmd(info, sector, 0,
1570 FLASH_CMD_PROTECT_SET);
1571 else
1572 flash_write_cmd(info, sector, 0,
1573 FLASH_CMD_PROTECT_CLEAR);
1574 #endif
1575 };
1576
1577 /*
1578 * Flash needs to be in status register read mode for
1579 * flash_full_status_check() to work correctly
1580 */
1581 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1582 retcode = flash_full_status_check(info, sector, info->erase_blk_tout,
1583 prot ? "protect" : "unprotect");
1584 if (retcode == 0) {
1585 info->protect[sector] = prot;
1586
1587 /*
1588 * On some of Intel's flash chips (marked via legacy_unlock)
1589 * unprotect unprotects all locking.
1590 */
1591 if (prot == 0 && info->legacy_unlock) {
1592 flash_sect_t i;
1593
1594 for (i = 0; i < info->sector_count; i++) {
1595 if (info->protect[i])
1596 flash_real_protect(info, i, 1);
1597 }
1598 }
1599 }
1600 return retcode;
1601 }
1602
1603 /*-----------------------------------------------------------------------
1604 * flash_read_user_serial - read the OneTimeProgramming cells
1605 */
1606 void flash_read_user_serial(flash_info_t *info, void *buffer, int offset,
1607 int len)
1608 {
1609 uchar *src;
1610 uchar *dst;
1611
1612 dst = buffer;
1613 src = flash_map(info, 0, FLASH_OFFSET_USER_PROTECTION);
1614 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1615 memcpy(dst, src + offset, len);
1616 flash_write_cmd(info, 0, 0, info->cmd_reset);
1617 udelay(1);
1618 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1619 }
1620
1621 /*
1622 * flash_read_factory_serial - read the device Id from the protection area
1623 */
1624 void flash_read_factory_serial(flash_info_t *info, void *buffer, int offset,
1625 int len)
1626 {
1627 uchar *src;
1628
1629 src = flash_map(info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1630 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1631 memcpy(buffer, src + offset, len);
1632 flash_write_cmd(info, 0, 0, info->cmd_reset);
1633 udelay(1);
1634 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1635 }
1636
1637 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1638
1639 /*-----------------------------------------------------------------------
1640 * Reverse the order of the erase regions in the CFI QRY structure.
1641 * This is needed for chips that are either a) correctly detected as
1642 * top-boot, or b) buggy.
1643 */
1644 static void cfi_reverse_geometry(struct cfi_qry *qry)
1645 {
1646 unsigned int i, j;
1647 u32 tmp;
1648
1649 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1650 tmp = get_unaligned(&qry->erase_region_info[i]);
1651 put_unaligned(get_unaligned(&qry->erase_region_info[j]),
1652 &qry->erase_region_info[i]);
1653 put_unaligned(tmp, &qry->erase_region_info[j]);
1654 }
1655 }
1656
1657 /*-----------------------------------------------------------------------
1658 * read jedec ids from device and set corresponding fields in info struct
1659 *
1660 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1661 *
1662 */
1663 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1664 {
1665 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1666 udelay(1);
1667 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1668 udelay(1000); /* some flash are slow to respond */
1669 info->manufacturer_id = flash_read_uchar(info,
1670 FLASH_OFFSET_MANUFACTURER_ID);
1671 info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1672 flash_read_word(info, FLASH_OFFSET_DEVICE_ID) :
1673 flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID);
1674 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1675 }
1676
1677 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1678 {
1679 info->cmd_reset = FLASH_CMD_RESET;
1680
1681 cmdset_intel_read_jedec_ids(info);
1682 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1683
1684 #ifdef CONFIG_SYS_FLASH_PROTECTION
1685 /* read legacy lock/unlock bit from intel flash */
1686 if (info->ext_addr) {
1687 info->legacy_unlock =
1688 flash_read_uchar(info, info->ext_addr + 5) & 0x08;
1689 }
1690 #endif
1691
1692 return 0;
1693 }
1694
1695 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1696 {
1697 ushort bank_id = 0;
1698 uchar manu_id;
1699 uchar feature;
1700
1701 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1702 flash_unlock_seq(info, 0);
1703 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1704 udelay(1000); /* some flash are slow to respond */
1705
1706 manu_id = flash_read_uchar(info, FLASH_OFFSET_MANUFACTURER_ID);
1707 /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1708 while (manu_id == FLASH_CONTINUATION_CODE && bank_id < 0x800) {
1709 bank_id += 0x100;
1710 manu_id = flash_read_uchar(info,
1711 bank_id | FLASH_OFFSET_MANUFACTURER_ID);
1712 }
1713 info->manufacturer_id = manu_id;
1714
1715 debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n",
1716 info->ext_addr, info->cfi_version);
1717 if (info->ext_addr && info->cfi_version >= 0x3134) {
1718 /* read software feature (at 0x53) */
1719 feature = flash_read_uchar(info, info->ext_addr + 0x13);
1720 debug("feature = 0x%x\n", feature);
1721 info->sr_supported = feature & 0x1;
1722 }
1723
1724 switch (info->chipwidth) {
1725 case FLASH_CFI_8BIT:
1726 info->device_id = flash_read_uchar(info,
1727 FLASH_OFFSET_DEVICE_ID);
1728 if (info->device_id == 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 case FLASH_CFI_16BIT:
1738 info->device_id = flash_read_word(info,
1739 FLASH_OFFSET_DEVICE_ID);
1740 if ((info->device_id & 0xff) == 0x7E) {
1741 /* AMD 3-byte (expanded) device ids */
1742 info->device_id2 = flash_read_uchar(info,
1743 FLASH_OFFSET_DEVICE_ID2);
1744 info->device_id2 <<= 8;
1745 info->device_id2 |= flash_read_uchar(info,
1746 FLASH_OFFSET_DEVICE_ID3);
1747 }
1748 break;
1749 default:
1750 break;
1751 }
1752 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1753 udelay(1);
1754 }
1755
1756 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1757 {
1758 info->cmd_reset = AMD_CMD_RESET;
1759 info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR;
1760
1761 cmdset_amd_read_jedec_ids(info);
1762 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1763
1764 #ifdef CONFIG_SYS_FLASH_PROTECTION
1765 if (info->ext_addr) {
1766 /* read sector protect/unprotect scheme (at 0x49) */
1767 if (flash_read_uchar(info, info->ext_addr + 9) == 0x8)
1768 info->legacy_unlock = 1;
1769 }
1770 #endif
1771
1772 return 0;
1773 }
1774
1775 #ifdef CONFIG_FLASH_CFI_LEGACY
1776 static void flash_read_jedec_ids(flash_info_t *info)
1777 {
1778 info->manufacturer_id = 0;
1779 info->device_id = 0;
1780 info->device_id2 = 0;
1781
1782 switch (info->vendor) {
1783 case CFI_CMDSET_INTEL_PROG_REGIONS:
1784 case CFI_CMDSET_INTEL_STANDARD:
1785 case CFI_CMDSET_INTEL_EXTENDED:
1786 cmdset_intel_read_jedec_ids(info);
1787 break;
1788 case CFI_CMDSET_AMD_STANDARD:
1789 case CFI_CMDSET_AMD_EXTENDED:
1790 cmdset_amd_read_jedec_ids(info);
1791 break;
1792 default:
1793 break;
1794 }
1795 }
1796
1797 /*-----------------------------------------------------------------------
1798 * Call board code to request info about non-CFI flash.
1799 * board_flash_get_legacy needs to fill in at least:
1800 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1801 */
1802 static int flash_detect_legacy(phys_addr_t base, int banknum)
1803 {
1804 flash_info_t *info = &flash_info[banknum];
1805
1806 if (board_flash_get_legacy(base, banknum, info)) {
1807 /* board code may have filled info completely. If not, we
1808 * use JEDEC ID probing.
1809 */
1810 if (!info->vendor) {
1811 int modes[] = {
1812 CFI_CMDSET_AMD_STANDARD,
1813 CFI_CMDSET_INTEL_STANDARD
1814 };
1815 int i;
1816
1817 for (i = 0; i < ARRAY_SIZE(modes); i++) {
1818 info->vendor = modes[i];
1819 info->start[0] =
1820 (ulong)map_physmem(base,
1821 info->portwidth,
1822 MAP_NOCACHE);
1823 if (info->portwidth == FLASH_CFI_8BIT &&
1824 info->interface == FLASH_CFI_X8X16) {
1825 info->addr_unlock1 = 0x2AAA;
1826 info->addr_unlock2 = 0x5555;
1827 } else {
1828 info->addr_unlock1 = 0x5555;
1829 info->addr_unlock2 = 0x2AAA;
1830 }
1831 flash_read_jedec_ids(info);
1832 debug("JEDEC PROBE: ID %x %x %x\n",
1833 info->manufacturer_id,
1834 info->device_id,
1835 info->device_id2);
1836 if (jedec_flash_match(info, info->start[0]))
1837 break;
1838
1839 unmap_physmem((void *)info->start[0],
1840 info->portwidth);
1841 }
1842 }
1843
1844 switch (info->vendor) {
1845 case CFI_CMDSET_INTEL_PROG_REGIONS:
1846 case CFI_CMDSET_INTEL_STANDARD:
1847 case CFI_CMDSET_INTEL_EXTENDED:
1848 info->cmd_reset = FLASH_CMD_RESET;
1849 break;
1850 case CFI_CMDSET_AMD_STANDARD:
1851 case CFI_CMDSET_AMD_EXTENDED:
1852 case CFI_CMDSET_AMD_LEGACY:
1853 info->cmd_reset = AMD_CMD_RESET;
1854 break;
1855 }
1856 info->flash_id = FLASH_MAN_CFI;
1857 return 1;
1858 }
1859 return 0; /* use CFI */
1860 }
1861 #else
1862 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1863 {
1864 return 0; /* use CFI */
1865 }
1866 #endif
1867
1868 /*-----------------------------------------------------------------------
1869 * detect if flash is compatible with the Common Flash Interface (CFI)
1870 * http://www.jedec.org/download/search/jesd68.pdf
1871 */
1872 static void flash_read_cfi(flash_info_t *info, void *buf, unsigned int start,
1873 size_t len)
1874 {
1875 u8 *p = buf;
1876 unsigned int i;
1877
1878 for (i = 0; i < len; i++)
1879 p[i] = flash_read_uchar(info, start + i);
1880 }
1881
1882 static void __flash_cmd_reset(flash_info_t *info)
1883 {
1884 /*
1885 * We do not yet know what kind of commandset to use, so we issue
1886 * the reset command in both Intel and AMD variants, in the hope
1887 * that AMD flash roms ignore the Intel command.
1888 */
1889 flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1890 udelay(1);
1891 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1892 }
1893
1894 void flash_cmd_reset(flash_info_t *info)
1895 __attribute__((weak, alias("__flash_cmd_reset")));
1896
1897 static int __flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1898 {
1899 int cfi_offset;
1900
1901 /* Issue FLASH reset command */
1902 flash_cmd_reset(info);
1903
1904 for (cfi_offset = 0; cfi_offset < ARRAY_SIZE(flash_offset_cfi);
1905 cfi_offset++) {
1906 flash_write_cmd(info, 0, flash_offset_cfi[cfi_offset],
1907 FLASH_CMD_CFI);
1908 if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q') &&
1909 flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') &&
1910 flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1911 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1912 sizeof(struct cfi_qry));
1913 info->interface = le16_to_cpu(qry->interface_desc);
1914
1915 info->cfi_offset = flash_offset_cfi[cfi_offset];
1916 debug("device interface is %d\n",
1917 info->interface);
1918 debug("found port %d chip %d ",
1919 info->portwidth, info->chipwidth);
1920 debug("port %d bits chip %d bits\n",
1921 info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1922 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1923
1924 /* calculate command offsets as in the Linux driver */
1925 info->addr_unlock1 = 0x555;
1926 info->addr_unlock2 = 0x2aa;
1927
1928 /*
1929 * modify the unlock address if we are
1930 * in compatibility mode
1931 */
1932 if (/* x8/x16 in x8 mode */
1933 (info->chipwidth == FLASH_CFI_BY8 &&
1934 info->interface == FLASH_CFI_X8X16) ||
1935 /* x16/x32 in x16 mode */
1936 (info->chipwidth == FLASH_CFI_BY16 &&
1937 info->interface == FLASH_CFI_X16X32)) {
1938 info->addr_unlock1 = 0xaaa;
1939 info->addr_unlock2 = 0x555;
1940 }
1941
1942 info->name = "CFI conformant";
1943 return 1;
1944 }
1945 }
1946
1947 return 0;
1948 }
1949
1950 static int flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1951 {
1952 debug("flash detect cfi\n");
1953
1954 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1955 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1956 for (info->chipwidth = FLASH_CFI_BY8;
1957 info->chipwidth <= info->portwidth;
1958 info->chipwidth <<= 1)
1959 if (__flash_detect_cfi(info, qry))
1960 return 1;
1961 }
1962 debug("not found\n");
1963 return 0;
1964 }
1965
1966 /*
1967 * Manufacturer-specific quirks. Add workarounds for geometry
1968 * reversal, etc. here.
1969 */
1970 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1971 {
1972 /* check if flash geometry needs reversal */
1973 if (qry->num_erase_regions > 1) {
1974 /* reverse geometry if top boot part */
1975 if (info->cfi_version < 0x3131) {
1976 /* CFI < 1.1, try to guess from device id */
1977 if ((info->device_id & 0x80) != 0)
1978 cfi_reverse_geometry(qry);
1979 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1980 /* CFI >= 1.1, deduct from top/bottom flag */
1981 /* note: ext_addr is valid since cfi_version > 0 */
1982 cfi_reverse_geometry(qry);
1983 }
1984 }
1985 }
1986
1987 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1988 {
1989 int reverse_geometry = 0;
1990
1991 /* Check the "top boot" bit in the PRI */
1992 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1993 reverse_geometry = 1;
1994
1995 /* AT49BV6416(T) list the erase regions in the wrong order.
1996 * However, the device ID is identical with the non-broken
1997 * AT49BV642D they differ in the high byte.
1998 */
1999 if (info->device_id == 0xd6 || info->device_id == 0xd2)
2000 reverse_geometry = !reverse_geometry;
2001
2002 if (reverse_geometry)
2003 cfi_reverse_geometry(qry);
2004 }
2005
2006 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
2007 {
2008 /* check if flash geometry needs reversal */
2009 if (qry->num_erase_regions > 1) {
2010 /* reverse geometry if top boot part */
2011 if (info->cfi_version < 0x3131) {
2012 /* CFI < 1.1, guess by device id */
2013 if (info->device_id == 0x22CA || /* M29W320DT */
2014 info->device_id == 0x2256 || /* M29W320ET */
2015 info->device_id == 0x22D7) { /* M29W800DT */
2016 cfi_reverse_geometry(qry);
2017 }
2018 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
2019 /* CFI >= 1.1, deduct from top/bottom flag */
2020 /* note: ext_addr is valid since cfi_version > 0 */
2021 cfi_reverse_geometry(qry);
2022 }
2023 }
2024 }
2025
2026 static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry)
2027 {
2028 /*
2029 * SST, for many recent nor parallel flashes, says they are
2030 * CFI-conformant. This is not true, since qry struct.
2031 * reports a std. AMD command set (0x0002), while SST allows to
2032 * erase two different sector sizes for the same memory.
2033 * 64KB sector (SST call it block) needs 0x30 to be erased.
2034 * 4KB sector (SST call it sector) needs 0x50 to be erased.
2035 * Since CFI query detect the 4KB number of sectors, users expects
2036 * a sector granularity of 4KB, and it is here set.
2037 */
2038 if (info->device_id == 0x5D23 || /* SST39VF3201B */
2039 info->device_id == 0x5C23) { /* SST39VF3202B */
2040 /* set sector granularity to 4KB */
2041 info->cmd_erase_sector = 0x50;
2042 }
2043 }
2044
2045 static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry)
2046 {
2047 /*
2048 * The M29EW devices seem to report the CFI information wrong
2049 * when it's in 8 bit mode.
2050 * There's an app note from Numonyx on this issue.
2051 * So adjust the buffer size for M29EW while operating in 8-bit mode
2052 */
2053 if (qry->max_buf_write_size > 0x8 &&
2054 info->device_id == 0x7E &&
2055 (info->device_id2 == 0x2201 ||
2056 info->device_id2 == 0x2301 ||
2057 info->device_id2 == 0x2801 ||
2058 info->device_id2 == 0x4801)) {
2059 debug("Adjusted buffer size on Numonyx flash");
2060 debug(" M29EW family in 8 bit mode\n");
2061 qry->max_buf_write_size = 0x8;
2062 }
2063 }
2064
2065 /*
2066 * The following code cannot be run from FLASH!
2067 *
2068 */
2069 ulong flash_get_size(phys_addr_t base, int banknum)
2070 {
2071 flash_info_t *info = &flash_info[banknum];
2072 int i, j;
2073 flash_sect_t sect_cnt;
2074 phys_addr_t sector;
2075 unsigned long tmp;
2076 int size_ratio;
2077 uchar num_erase_regions;
2078 int erase_region_size;
2079 int erase_region_count;
2080 struct cfi_qry qry;
2081 unsigned long max_size;
2082
2083 memset(&qry, 0, sizeof(qry));
2084
2085 info->ext_addr = 0;
2086 info->cfi_version = 0;
2087 #ifdef CONFIG_SYS_FLASH_PROTECTION
2088 info->legacy_unlock = 0;
2089 #endif
2090
2091 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
2092
2093 if (flash_detect_cfi(info, &qry)) {
2094 info->vendor = le16_to_cpu(get_unaligned(&qry.p_id));
2095 info->ext_addr = le16_to_cpu(get_unaligned(&qry.p_adr));
2096 num_erase_regions = qry.num_erase_regions;
2097
2098 if (info->ext_addr) {
2099 info->cfi_version = (ushort)flash_read_uchar(info,
2100 info->ext_addr + 3) << 8;
2101 info->cfi_version |= (ushort)flash_read_uchar(info,
2102 info->ext_addr + 4);
2103 }
2104
2105 #ifdef DEBUG
2106 flash_printqry(&qry);
2107 #endif
2108
2109 switch (info->vendor) {
2110 case CFI_CMDSET_INTEL_PROG_REGIONS:
2111 case CFI_CMDSET_INTEL_STANDARD:
2112 case CFI_CMDSET_INTEL_EXTENDED:
2113 cmdset_intel_init(info, &qry);
2114 break;
2115 case CFI_CMDSET_AMD_STANDARD:
2116 case CFI_CMDSET_AMD_EXTENDED:
2117 cmdset_amd_init(info, &qry);
2118 break;
2119 default:
2120 printf("CFI: Unknown command set 0x%x\n",
2121 info->vendor);
2122 /*
2123 * Unfortunately, this means we don't know how
2124 * to get the chip back to Read mode. Might
2125 * as well try an Intel-style reset...
2126 */
2127 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
2128 return 0;
2129 }
2130
2131 /* Do manufacturer-specific fixups */
2132 switch (info->manufacturer_id) {
2133 case 0x0001: /* AMD */
2134 case 0x0037: /* AMIC */
2135 flash_fixup_amd(info, &qry);
2136 break;
2137 case 0x001f:
2138 flash_fixup_atmel(info, &qry);
2139 break;
2140 case 0x0020:
2141 flash_fixup_stm(info, &qry);
2142 break;
2143 case 0x00bf: /* SST */
2144 flash_fixup_sst(info, &qry);
2145 break;
2146 case 0x0089: /* Numonyx */
2147 flash_fixup_num(info, &qry);
2148 break;
2149 }
2150
2151 debug("manufacturer is %d\n", info->vendor);
2152 debug("manufacturer id is 0x%x\n", info->manufacturer_id);
2153 debug("device id is 0x%x\n", info->device_id);
2154 debug("device id2 is 0x%x\n", info->device_id2);
2155 debug("cfi version is 0x%04x\n", info->cfi_version);
2156
2157 size_ratio = info->portwidth / info->chipwidth;
2158 /* if the chip is x8/x16 reduce the ratio by half */
2159 if (info->interface == FLASH_CFI_X8X16 &&
2160 info->chipwidth == FLASH_CFI_BY8) {
2161 size_ratio >>= 1;
2162 }
2163 debug("size_ratio %d port %d bits chip %d bits\n",
2164 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
2165 info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
2166 info->size = 1 << qry.dev_size;
2167 /* multiply the size by the number of chips */
2168 info->size *= size_ratio;
2169 max_size = cfi_flash_bank_size(banknum);
2170 if (max_size && info->size > max_size) {
2171 debug("[truncated from %ldMiB]", info->size >> 20);
2172 info->size = max_size;
2173 }
2174 debug("found %d erase regions\n", num_erase_regions);
2175 sect_cnt = 0;
2176 sector = base;
2177 for (i = 0; i < num_erase_regions; i++) {
2178 if (i > NUM_ERASE_REGIONS) {
2179 printf("%d erase regions found, only %d used\n",
2180 num_erase_regions, NUM_ERASE_REGIONS);
2181 break;
2182 }
2183
2184 tmp = le32_to_cpu(get_unaligned(
2185 &qry.erase_region_info[i]));
2186 debug("erase region %u: 0x%08lx\n", i, tmp);
2187
2188 erase_region_count = (tmp & 0xffff) + 1;
2189 tmp >>= 16;
2190 erase_region_size =
2191 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
2192 debug("erase_region_count = %d ", erase_region_count);
2193 debug("erase_region_size = %d\n", erase_region_size);
2194 for (j = 0; j < erase_region_count; j++) {
2195 if (sector - base >= info->size)
2196 break;
2197 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
2198 printf("ERROR: too many flash sectors\n");
2199 break;
2200 }
2201 info->start[sect_cnt] =
2202 (ulong)map_physmem(sector,
2203 info->portwidth,
2204 MAP_NOCACHE);
2205 sector += (erase_region_size * size_ratio);
2206
2207 /*
2208 * Only read protection status from
2209 * supported devices (intel...)
2210 */
2211 switch (info->vendor) {
2212 case CFI_CMDSET_INTEL_PROG_REGIONS:
2213 case CFI_CMDSET_INTEL_EXTENDED:
2214 case CFI_CMDSET_INTEL_STANDARD:
2215 /*
2216 * Set flash to read-id mode. Otherwise
2217 * reading protected status is not
2218 * guaranteed.
2219 */
2220 flash_write_cmd(info, sect_cnt, 0,
2221 FLASH_CMD_READ_ID);
2222 info->protect[sect_cnt] =
2223 flash_isset(info, sect_cnt,
2224 FLASH_OFFSET_PROTECT,
2225 FLASH_STATUS_PROTECT);
2226 flash_write_cmd(info, sect_cnt, 0,
2227 FLASH_CMD_RESET);
2228 break;
2229 case CFI_CMDSET_AMD_EXTENDED:
2230 case CFI_CMDSET_AMD_STANDARD:
2231 if (!info->legacy_unlock) {
2232 /* default: not protected */
2233 info->protect[sect_cnt] = 0;
2234 break;
2235 }
2236
2237 /* Read protection (PPB) from sector */
2238 flash_write_cmd(info, 0, 0,
2239 info->cmd_reset);
2240 flash_unlock_seq(info, 0);
2241 flash_write_cmd(info, 0,
2242 info->addr_unlock1,
2243 FLASH_CMD_READ_ID);
2244 info->protect[sect_cnt] =
2245 flash_isset(
2246 info, sect_cnt,
2247 FLASH_OFFSET_PROTECT,
2248 FLASH_STATUS_PROTECT);
2249 break;
2250 default:
2251 /* default: not protected */
2252 info->protect[sect_cnt] = 0;
2253 }
2254
2255 sect_cnt++;
2256 }
2257 }
2258
2259 info->sector_count = sect_cnt;
2260 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2261 tmp = 1 << qry.block_erase_timeout_typ;
2262 info->erase_blk_tout = tmp *
2263 (1 << qry.block_erase_timeout_max);
2264 tmp = (1 << qry.buf_write_timeout_typ) *
2265 (1 << qry.buf_write_timeout_max);
2266
2267 /* round up when converting to ms */
2268 info->buffer_write_tout = (tmp + 999) / 1000;
2269 tmp = (1 << qry.word_write_timeout_typ) *
2270 (1 << qry.word_write_timeout_max);
2271 /* round up when converting to ms */
2272 info->write_tout = (tmp + 999) / 1000;
2273 info->flash_id = FLASH_MAN_CFI;
2274 if (info->interface == FLASH_CFI_X8X16 &&
2275 info->chipwidth == FLASH_CFI_BY8) {
2276 /* XXX - Need to test on x8/x16 in parallel. */
2277 info->portwidth >>= 1;
2278 }
2279
2280 flash_write_cmd(info, 0, 0, info->cmd_reset);
2281 }
2282
2283 return (info->size);
2284 }
2285
2286 #ifdef CONFIG_FLASH_CFI_MTD
2287 void flash_set_verbose(uint v)
2288 {
2289 flash_verbose = v;
2290 }
2291 #endif
2292
2293 static void cfi_flash_set_config_reg(u32 base, u16 val)
2294 {
2295 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2296 /*
2297 * Only set this config register if really defined
2298 * to a valid value (0xffff is invalid)
2299 */
2300 if (val == 0xffff)
2301 return;
2302
2303 /*
2304 * Set configuration register. Data is "encrypted" in the 16 lower
2305 * address bits.
2306 */
2307 flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2308 flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2309
2310 /*
2311 * Finally issue reset-command to bring device back to
2312 * read-array mode
2313 */
2314 flash_write16(FLASH_CMD_RESET, (void *)base);
2315 #endif
2316 }
2317
2318 /*-----------------------------------------------------------------------
2319 */
2320
2321 static void flash_protect_default(void)
2322 {
2323 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2324 int i;
2325 struct apl_s {
2326 ulong start;
2327 ulong size;
2328 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2329 #endif
2330
2331 /* Monitor protection ON by default */
2332 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2333 (!defined(CONFIG_MONITOR_IS_IN_RAM))
2334 flash_protect(FLAG_PROTECT_SET,
2335 CONFIG_SYS_MONITOR_BASE,
2336 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
2337 flash_get_info(CONFIG_SYS_MONITOR_BASE));
2338 #endif
2339
2340 /* Environment protection ON by default */
2341 #ifdef CONFIG_ENV_IS_IN_FLASH
2342 flash_protect(FLAG_PROTECT_SET,
2343 CONFIG_ENV_ADDR,
2344 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2345 flash_get_info(CONFIG_ENV_ADDR));
2346 #endif
2347
2348 /* Redundant environment protection ON by default */
2349 #ifdef CONFIG_ENV_ADDR_REDUND
2350 flash_protect(FLAG_PROTECT_SET,
2351 CONFIG_ENV_ADDR_REDUND,
2352 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2353 flash_get_info(CONFIG_ENV_ADDR_REDUND));
2354 #endif
2355
2356 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2357 for (i = 0; i < ARRAY_SIZE(apl); i++) {
2358 debug("autoprotecting from %08lx to %08lx\n",
2359 apl[i].start, apl[i].start + apl[i].size - 1);
2360 flash_protect(FLAG_PROTECT_SET,
2361 apl[i].start,
2362 apl[i].start + apl[i].size - 1,
2363 flash_get_info(apl[i].start));
2364 }
2365 #endif
2366 }
2367
2368 unsigned long flash_init(void)
2369 {
2370 unsigned long size = 0;
2371 int i;
2372
2373 #ifdef CONFIG_SYS_FLASH_PROTECTION
2374 /* read environment from EEPROM */
2375 char s[64];
2376
2377 env_get_f("unlock", s, sizeof(s));
2378 #endif
2379
2380 #ifdef CONFIG_CFI_FLASH /* for driver model */
2381 cfi_flash_init_dm();
2382 #endif
2383
2384 /* Init: no FLASHes known */
2385 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2386 flash_info[i].flash_id = FLASH_UNKNOWN;
2387
2388 /* Optionally write flash configuration register */
2389 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2390 cfi_flash_config_reg(i));
2391
2392 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2393 flash_get_size(cfi_flash_bank_addr(i), i);
2394 size += flash_info[i].size;
2395 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2396 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2397 printf("## Unknown flash on Bank %d ", i + 1);
2398 printf("- Size = 0x%08lx = %ld MB\n",
2399 flash_info[i].size,
2400 flash_info[i].size >> 20);
2401 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2402 }
2403 #ifdef CONFIG_SYS_FLASH_PROTECTION
2404 else if (strcmp(s, "yes") == 0) {
2405 /*
2406 * Only the U-Boot image and it's environment
2407 * is protected, all other sectors are
2408 * unprotected (unlocked) if flash hardware
2409 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2410 * and the environment variable "unlock" is
2411 * set to "yes".
2412 */
2413 if (flash_info[i].legacy_unlock) {
2414 int k;
2415
2416 /*
2417 * Disable legacy_unlock temporarily,
2418 * since flash_real_protect would
2419 * relock all other sectors again
2420 * otherwise.
2421 */
2422 flash_info[i].legacy_unlock = 0;
2423
2424 /*
2425 * Legacy unlocking (e.g. Intel J3) ->
2426 * unlock only one sector. This will
2427 * unlock all sectors.
2428 */
2429 flash_real_protect(&flash_info[i], 0, 0);
2430
2431 flash_info[i].legacy_unlock = 1;
2432
2433 /*
2434 * Manually mark other sectors as
2435 * unlocked (unprotected)
2436 */
2437 for (k = 1; k < flash_info[i].sector_count; k++)
2438 flash_info[i].protect[k] = 0;
2439 } else {
2440 /*
2441 * No legancy unlocking -> unlock all sectors
2442 */
2443 flash_protect(FLAG_PROTECT_CLEAR,
2444 flash_info[i].start[0],
2445 flash_info[i].start[0]
2446 + flash_info[i].size - 1,
2447 &flash_info[i]);
2448 }
2449 }
2450 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2451 }
2452
2453 flash_protect_default();
2454 #ifdef CONFIG_FLASH_CFI_MTD
2455 cfi_mtd_init();
2456 #endif
2457
2458 return (size);
2459 }
2460
2461 #ifdef CONFIG_CFI_FLASH /* for driver model */
2462 static int cfi_flash_probe(struct udevice *dev)
2463 {
2464 const fdt32_t *cell;
2465 int addrc, sizec;
2466 int len, idx;
2467
2468 addrc = dev_read_addr_cells(dev);
2469 sizec = dev_read_size_cells(dev);
2470
2471 /* decode regs; there may be multiple reg tuples. */
2472 cell = dev_read_prop(dev, "reg", &len);
2473 if (!cell)
2474 return -ENOENT;
2475 idx = 0;
2476 len /= sizeof(fdt32_t);
2477 while (idx < len) {
2478 phys_addr_t addr;
2479
2480 addr = dev_translate_address(dev, cell + idx);
2481
2482 flash_info[cfi_flash_num_flash_banks].dev = dev;
2483 flash_info[cfi_flash_num_flash_banks].base = addr;
2484 cfi_flash_num_flash_banks++;
2485
2486 idx += addrc + sizec;
2487 }
2488 gd->bd->bi_flashstart = flash_info[0].base;
2489
2490 return 0;
2491 }
2492
2493 static const struct udevice_id cfi_flash_ids[] = {
2494 { .compatible = "cfi-flash" },
2495 { .compatible = "jedec-flash" },
2496 {}
2497 };
2498
2499 U_BOOT_DRIVER(cfi_flash) = {
2500 .name = "cfi_flash",
2501 .id = UCLASS_MTD,
2502 .of_match = cfi_flash_ids,
2503 .probe = cfi_flash_probe,
2504 };
2505 #endif /* CONFIG_CFI_FLASH */
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