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1 /*
2  * (C) Copyright 2004-2005
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
6  * Add support for Am29F016D and dynamic switch setting.
7  *
8  * See file CREDITS for list of people who contributed to this
9  * project.
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License as
13  * published by the Free Software Foundation; either version 2 of
14  * the License, or (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24  * MA 02111-1307 USA
25  */
26
27 /*
28  * Modified 4/5/2001
29  * Wait for completion of each sector erase command issued
30  * 4/5/2001
31  * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
32  */
33
34 #include <common.h>
35 #include <asm/ppc4xx.h>
36 #include <asm/processor.h>
37
38 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips */
39
40 /*-----------------------------------------------------------------------
41  * Functions
42  */
43 static int write_word(flash_info_t * info, ulong dest, ulong data);
44 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
45 static int write_word_1(flash_info_t * info, ulong dest, ulong data);
46 static int write_word_2(flash_info_t * info, ulong dest, ulong data);
47 static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
48 static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
49 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
50 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
51 #endif
52
53 void flash_print_info(flash_info_t * info)
54 {
55         int i;
56         int k;
57         int size;
58         int erased;
59         volatile unsigned long *flash;
60
61         if (info->flash_id == FLASH_UNKNOWN) {
62                 printf("missing or unknown FLASH type\n");
63                 return;
64         }
65
66         switch (info->flash_id & FLASH_VENDMASK) {
67         case FLASH_MAN_AMD:
68                 printf("AMD ");
69                 break;
70         case FLASH_MAN_STM:
71                 printf("STM ");
72                 break;
73         case FLASH_MAN_FUJ:
74                 printf("FUJITSU ");
75                 break;
76         case FLASH_MAN_SST:
77                 printf("SST ");
78                 break;
79         case FLASH_MAN_MX:
80                 printf ("MACRONIX ");
81                 break;
82         default:
83                 printf("Unknown Vendor ");
84                 break;
85         }
86
87         switch (info->flash_id & FLASH_TYPEMASK) {
88         case FLASH_AM040:
89                 printf("AM29F040 (512 Kbit, uniform sector size)\n");
90                 break;
91         case FLASH_AM400B:
92                 printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
93                 break;
94         case FLASH_AM400T:
95                 printf("AM29LV400T (4 Mbit, top boot sector)\n");
96                 break;
97         case FLASH_AM800B:
98                 printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
99                 break;
100         case FLASH_AM800T:
101                 printf("AM29LV800T (8 Mbit, top boot sector)\n");
102                 break;
103         case FLASH_AMD016:
104                 printf("AM29F016D (16 Mbit, uniform sector size)\n");
105                 break;
106         case FLASH_AM160B:
107                 printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
108                 break;
109         case FLASH_AM160T:
110                 printf("AM29LV160T (16 Mbit, top boot sector)\n");
111                 break;
112         case FLASH_AM320B:
113                 printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
114                 break;
115         case FLASH_AM320T:
116                 printf("AM29LV320T (32 Mbit, top boot sector)\n");
117                 break;
118         case FLASH_AM033C:
119                 printf("AM29LV033C (32 Mbit, top boot sector)\n");
120                 break;
121         case FLASH_SST800A:
122                 printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
123                 break;
124         case FLASH_SST160A:
125                 printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
126                 break;
127         case FLASH_STMW320DT:
128                 printf ("M29W320DT (32 M, top sector)\n");
129                 break;
130         case FLASH_MXLV320T:
131                 printf ("MXLV320T (32 Mbit, top sector)\n");
132                 break;
133         default:
134                 printf("Unknown Chip Type\n");
135                 break;
136         }
137
138         printf("  Size: %ld KB in %d Sectors\n",
139                info->size >> 10, info->sector_count);
140
141         printf("  Sector Start Addresses:");
142         for (i = 0; i < info->sector_count; ++i) {
143                 /*
144                  * Check if whole sector is erased
145                  */
146                 if (i != (info->sector_count - 1))
147                         size = info->start[i + 1] - info->start[i];
148                 else
149                         size = info->start[0] + info->size - info->start[i];
150                 erased = 1;
151                 flash = (volatile unsigned long *)info->start[i];
152                 size = size >> 2;       /* divide by 4 for longword access */
153                 for (k = 0; k < size; k++) {
154                         if (*flash++ != 0xffffffff) {
155                                 erased = 0;
156                                 break;
157                         }
158                 }
159
160                 if ((i % 5) == 0)
161                         printf("\n   ");
162                 printf(" %08lX%s%s",
163                        info->start[i],
164                        erased ? " E" : "  ", info->protect[i] ? "RO " : "   ");
165         }
166         printf("\n");
167         return;
168 }
169
170
171 /*
172  * The following code cannot be run from FLASH!
173  */
174 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
175 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
176 {
177         /* bit 0 used for big flash marking */
178         if ((ulong)addr & 0x1) {
179                 return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
180         } else {
181                 return flash_get_size_1(addr, info);
182         }
183 }
184
185 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
186 #else
187 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
188 #endif
189 {
190         short i;
191         CONFIG_SYS_FLASH_WORD_SIZE value;
192         ulong base = (ulong) addr;
193         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
194
195         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
196
197         /* Write auto select command: read Manufacturer ID */
198         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
199         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
200         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
201         udelay(1000);
202
203         value = addr2[0];
204         DEBUGF("FLASH MANUFACT: %x\n", value);
205
206         switch (value) {
207         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
208                 info->flash_id = FLASH_MAN_AMD;
209                 break;
210         case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
211                 info->flash_id = FLASH_MAN_FUJ;
212                 break;
213         case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
214                 info->flash_id = FLASH_MAN_SST;
215                 break;
216         case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
217                 info->flash_id = FLASH_MAN_STM;
218                 break;
219         default:
220                 info->flash_id = FLASH_UNKNOWN;
221                 info->sector_count = 0;
222                 info->size = 0;
223                 return (0);     /* no or unknown flash  */
224         }
225
226         value = addr2[1];       /* device ID */
227         DEBUGF("\nFLASH DEVICEID: %x\n", value);
228
229         switch (value) {
230         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
231                 info->flash_id += FLASH_AM040;
232                 info->sector_count = 8;
233                 info->size = 0x0080000;         /* => 512 KiB */
234                 break;
235
236         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
237                 info->flash_id += FLASH_AM040;
238                 info->sector_count = 8;
239                 info->size = 0x0080000;         /* => 512 KiB */
240                 break;
241
242         case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
243                 info->flash_id += FLASH_AM040;
244                 info->sector_count = 8;
245                 info->size = 0x0080000;         /* => 512 KiB */
246                 break;
247
248         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
249                 info->flash_id += FLASH_AMD016;
250                 info->sector_count = 32;
251                 info->size = 0x00200000;        /* => 2 MiB */
252                 break;
253
254         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
255                 info->flash_id += FLASH_AMDLV033C;
256                 info->sector_count = 64;
257                 info->size = 0x00400000;        /* => 4 MiB */
258                 break;
259
260         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
261                 info->flash_id += FLASH_AM400T;
262                 info->sector_count = 11;
263                 info->size = 0x00080000;        /* => 512 KiB */
264                 break;
265
266         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
267                 info->flash_id += FLASH_AM400B;
268                 info->sector_count = 11;
269                 info->size = 0x00080000;        /* => 512 KiB */
270                 break;
271
272         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
273                 info->flash_id += FLASH_AM800T;
274                 info->sector_count = 19;
275                 info->size = 0x00100000;        /* => 1 MiB */
276                 break;
277
278         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
279                 info->flash_id += FLASH_AM800B;
280                 info->sector_count = 19;
281                 info->size = 0x00100000;        /* => 1 MiB */
282                 break;
283
284         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
285                 info->flash_id += FLASH_AM160T;
286                 info->sector_count = 35;
287                 info->size = 0x00200000;        /* => 2 MiB */
288                 break;
289
290         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
291                 info->flash_id += FLASH_AM160B;
292                 info->sector_count = 35;
293                 info->size = 0x00200000;        /* => 2 MiB */
294                 break;
295
296         default:
297                 info->flash_id = FLASH_UNKNOWN;
298                 return (0);     /* => no or unknown flash */
299         }
300
301         /* set up sector start address table */
302         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
303             ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
304             ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
305                 for (i = 0; i < info->sector_count; i++)
306                         info->start[i] = base + (i * 0x00010000);
307         } else {
308                 if (info->flash_id & FLASH_BTYPE) {
309                         /* set sector offsets for bottom boot block type */
310                         info->start[0] = base + 0x00000000;
311                         info->start[1] = base + 0x00004000;
312                         info->start[2] = base + 0x00006000;
313                         info->start[3] = base + 0x00008000;
314                         for (i = 4; i < info->sector_count; i++) {
315                                 info->start[i] =
316                                     base + (i * 0x00010000) - 0x00030000;
317                         }
318                 } else {
319                         /* set sector offsets for top boot block type */
320                         i = info->sector_count - 1;
321                         info->start[i--] = base + info->size - 0x00004000;
322                         info->start[i--] = base + info->size - 0x00006000;
323                         info->start[i--] = base + info->size - 0x00008000;
324                         for (; i >= 0; i--) {
325                                 info->start[i] = base + i * 0x00010000;
326                         }
327                 }
328         }
329
330         /* check for protected sectors */
331         for (i = 0; i < info->sector_count; i++) {
332                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
333                 /* D0 = 1 if protected */
334                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
335
336                 /* For AMD29033C flash we need to resend the command of *
337                  * reading flash protection for upper 8 Mb of flash     */
338                 if (i == 32) {
339                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
340                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
341                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
342                 }
343
344                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
345                         info->protect[i] = 0;
346                 else
347                         info->protect[i] = addr2[2] & 1;
348         }
349
350         /* issue bank reset to return to read mode */
351         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
352
353         return (info->size);
354 }
355
356 static int wait_for_DQ7_1(flash_info_t * info, int sect)
357 {
358         ulong start, now, last;
359         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
360             (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
361
362         start = get_timer(0);
363         last = start;
364         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
365                (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
366                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
367                         printf("Timeout\n");
368                         return -1;
369                 }
370                 /* show that we're waiting */
371                 if ((now - last) > 1000) {      /* every second */
372                         putc('.');
373                         last = now;
374                 }
375         }
376         return 0;
377 }
378
379 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
380 int flash_erase(flash_info_t * info, int s_first, int s_last)
381 {
382         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
383             ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
384             ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
385             ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
386                 return flash_erase_2(info, s_first, s_last);
387         } else {
388                 return flash_erase_1(info, s_first, s_last);
389         }
390 }
391
392 static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
393 #else
394 int flash_erase(flash_info_t * info, int s_first, int s_last)
395 #endif
396 {
397         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
398         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
399         int flag, prot, sect;
400         int i;
401
402         if ((s_first < 0) || (s_first > s_last)) {
403                 if (info->flash_id == FLASH_UNKNOWN) {
404                         printf("- missing\n");
405                 } else {
406                         printf("- no sectors to erase\n");
407                 }
408                 return 1;
409         }
410
411         if (info->flash_id == FLASH_UNKNOWN) {
412                 printf("Can't erase unknown flash type - aborted\n");
413                 return 1;
414         }
415
416         prot = 0;
417         for (sect = s_first; sect <= s_last; ++sect) {
418                 if (info->protect[sect]) {
419                         prot++;
420                 }
421         }
422
423         if (prot) {
424                 printf("- Warning: %d protected sectors will not be erased!\n",
425                        prot);
426         } else {
427                 printf("\n");
428         }
429
430         /* Disable interrupts which might cause a timeout here */
431         flag = disable_interrupts();
432
433         /* Start erase on unprotected sectors */
434         for (sect = s_first; sect <= s_last; sect++) {
435                 if (info->protect[sect] == 0) { /* not protected */
436                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
437
438                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
439                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
440                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
441                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
442                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
443                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
444                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
445                                 for (i = 0; i < 50; i++)
446                                         udelay(1000);   /* wait 1 ms */
447                         } else {
448                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
449                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
450                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
451                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
452                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
453                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
454                         }
455                         /*
456                          * Wait for each sector to complete, it's more
457                          * reliable.  According to AMD Spec, you must
458                          * issue all erase commands within a specified
459                          * timeout.  This has been seen to fail, especially
460                          * if printf()s are included (for debug)!!
461                          */
462                         wait_for_DQ7_1(info, sect);
463                 }
464         }
465
466         /* re-enable interrupts if necessary */
467         if (flag)
468                 enable_interrupts();
469
470         /* wait at least 80us - let's wait 1 ms */
471         udelay(1000);
472
473         /* reset to read mode */
474         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
475         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
476
477         printf(" done\n");
478         return 0;
479 }
480
481 /*-----------------------------------------------------------------------
482  * Copy memory to flash, returns:
483  * 0 - OK
484  * 1 - write timeout
485  * 2 - Flash not erased
486  */
487 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
488 {
489         ulong cp, wp, data;
490         int i, l, rc;
491
492         wp = (addr & ~3);       /* get lower word aligned address */
493
494         /*
495          * handle unaligned start bytes
496          */
497         if ((l = addr - wp) != 0) {
498                 data = 0;
499                 for (i = 0, cp = wp; i < l; ++i, ++cp) {
500                         data = (data << 8) | (*(uchar *) cp);
501                 }
502                 for (; i < 4 && cnt > 0; ++i) {
503                         data = (data << 8) | *src++;
504                         --cnt;
505                         ++cp;
506                 }
507                 for (; cnt == 0 && i < 4; ++i, ++cp) {
508                         data = (data << 8) | (*(uchar *) cp);
509                 }
510
511                 if ((rc = write_word(info, wp, data)) != 0) {
512                         return (rc);
513                 }
514                 wp += 4;
515         }
516
517         /*
518          * handle word aligned part
519          */
520         while (cnt >= 4) {
521                 data = 0;
522                 for (i = 0; i < 4; ++i) {
523                         data = (data << 8) | *src++;
524                 }
525                 if ((rc = write_word(info, wp, data)) != 0) {
526                         return (rc);
527                 }
528                 wp += 4;
529                 cnt -= 4;
530         }
531
532         if (cnt == 0) {
533                 return (0);
534         }
535
536         /*
537          * handle unaligned tail bytes
538          */
539         data = 0;
540         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
541                 data = (data << 8) | *src++;
542                 --cnt;
543         }
544         for (; i < 4; ++i, ++cp) {
545                 data = (data << 8) | (*(uchar *) cp);
546         }
547
548         return (write_word(info, wp, data));
549 }
550
551 /*-----------------------------------------------------------------------
552  * Copy memory to flash, returns:
553  * 0 - OK
554  * 1 - write timeout
555  * 2 - Flash not erased
556  */
557 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
558 static int write_word(flash_info_t * info, ulong dest, ulong data)
559 {
560         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
561             ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
562             ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
563             ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
564                 return write_word_2(info, dest, data);
565         } else {
566                 return write_word_1(info, dest, data);
567         }
568 }
569
570 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
571 #else
572 static int write_word(flash_info_t * info, ulong dest, ulong data)
573 #endif
574 {
575         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
576         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
577         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
578         ulong start;
579         int i;
580
581         /* Check if Flash is (sufficiently) erased */
582         if ((*((vu_long *)dest) & data) != data) {
583                 return (2);
584         }
585
586         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
587                 int flag;
588
589                 /* Disable interrupts which might cause a timeout here */
590                 flag = disable_interrupts();
591
592                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
593                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
594                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
595
596                 dest2[i] = data2[i];
597
598                 /* re-enable interrupts if necessary */
599                 if (flag)
600                         enable_interrupts();
601
602                 /* data polling for D7 */
603                 start = get_timer(0);
604                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
605                        (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
606
607                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
608                                 return (1);
609                         }
610                 }
611         }
612
613         return (0);
614 }
615
616 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
617
618 #undef  CONFIG_SYS_FLASH_WORD_SIZE
619 #define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
620
621 /*
622  * The following code cannot be run from FLASH!
623  */
624 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
625 {
626         short i;
627         int n;
628         CONFIG_SYS_FLASH_WORD_SIZE value;
629         ulong base = (ulong) addr;
630         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
631
632         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
633
634         /* Write auto select command: read Manufacturer ID */
635         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
636         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
637         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
638         udelay(1000);
639
640         value = addr2[0];
641         DEBUGF("FLASH MANUFACT: %x\n", value);
642
643         switch (value) {
644         case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
645                 info->flash_id = FLASH_MAN_AMD;
646                 break;
647         case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
648                 info->flash_id = FLASH_MAN_FUJ;
649                 break;
650         case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
651                 info->flash_id = FLASH_MAN_SST;
652                 break;
653         case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
654                 info->flash_id = FLASH_MAN_STM;
655                 break;
656         case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
657                 info->flash_id = FLASH_MAN_MX;
658                 break;
659         default:
660                 info->flash_id = FLASH_UNKNOWN;
661                 info->sector_count = 0;
662                 info->size = 0;
663                 return (0);     /* no or unknown flash  */
664         }
665
666         value = addr2[1];       /* device ID */
667
668         DEBUGF("\nFLASH DEVICEID: %x\n", value);
669
670         switch (value) {
671
672         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
673                 info->flash_id += FLASH_AM320T;
674                 info->sector_count = 71;
675                 info->size = 0x00400000;  break;        /* => 4 MiB     */
676
677         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
678                 info->flash_id += FLASH_AM320B;
679                 info->sector_count = 71;
680                 info->size = 0x00400000;  break;        /* => 4 MiB     */
681
682         case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
683                 info->flash_id += FLASH_STMW320DT;
684                 info->sector_count = 67;
685                 info->size = 0x00400000;  break;        /* => 4 MiB     */
686
687         case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
688                 info->flash_id += FLASH_MXLV320T;
689                 info->sector_count = 71;
690                 info->size = 0x00400000;
691                 break;  /* => 4 MB      */
692
693         default:
694                 info->flash_id = FLASH_UNKNOWN;
695                 return (0);     /* => no or unknown flash */
696         }
697
698         /* set up sector start address table */
699         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
700             ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
701             ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
702                 for (i = 0; i < info->sector_count; i++)
703                         info->start[i] = base + (i * 0x00010000);
704         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
705                 /* set sector offsets for top boot block type           */
706                 base += info->size;
707                 i = info->sector_count;
708                 /*  1 x 16k boot sector */
709                 base -= 16 << 10;
710                 --i;
711                 info->start[i] = base;
712                 /*  2 x 8k  boot sectors */
713                 for (n=0; n<2; ++n) {
714                         base -= 8 << 10;
715                         --i;
716                         info->start[i] = base;
717                 }
718                 /*  1 x 32k boot sector */
719                 base -= 32 << 10;
720                 --i;
721                 info->start[i] = base;
722
723                 while (i > 0) {                 /* 64k regular sectors  */
724                         base -= 64 << 10;
725                         --i;
726                         info->start[i] = base;
727                 }
728         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
729                 i = info->sector_count - 1;
730                 info->start[i--] = base + info->size - 0x00002000;
731                 info->start[i--] = base + info->size - 0x00004000;
732                 info->start[i--] = base + info->size - 0x00006000;
733                 info->start[i--] = base + info->size - 0x00008000;
734                 info->start[i--] = base + info->size - 0x0000a000;
735                 info->start[i--] = base + info->size - 0x0000c000;
736                 info->start[i--] = base + info->size - 0x0000e000;
737                 info->start[i--] = base + info->size - 0x00010000;
738
739                 for (; i >= 0; i--)
740                         info->start[i] = base + i * 0x00010000;
741         } else {
742                 if (info->flash_id & FLASH_BTYPE) {
743                         /* set sector offsets for bottom boot block type */
744                         info->start[0] = base + 0x00000000;
745                         info->start[1] = base + 0x00002000;
746                         info->start[2] = base + 0x00004000;
747                         info->start[3] = base + 0x00006000;
748                         info->start[4] = base + 0x00008000;
749                         info->start[5] = base + 0x0000a000;
750                         info->start[6] = base + 0x0000c000;
751                         info->start[7] = base + 0x0000e000;
752                         for (i = 8; i < info->sector_count; i++) {
753                                 info->start[i] =
754                                     base + ((i-7) * 0x00010000);
755                         }
756                 } else {
757                         /* set sector offsets for top boot block type */
758                         i = info->sector_count - 1;
759                         info->start[i--] = base + info->size - 0x00002000;
760                         info->start[i--] = base + info->size - 0x00004000;
761                         info->start[i--] = base + info->size - 0x00006000;
762                         info->start[i--] = base + info->size - 0x00008000;
763                         info->start[i--] = base + info->size - 0x0000a000;
764                         info->start[i--] = base + info->size - 0x0000c000;
765                         info->start[i--] = base + info->size - 0x0000e000;
766                         for (; i >= 0; i--) {
767                                 info->start[i] = base + i * 0x00010000;
768                         }
769                 }
770         }
771
772         /* check for protected sectors */
773         for (i = 0; i < info->sector_count; i++) {
774                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
775                 /* D0 = 1 if protected */
776                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
777
778                 /* For AMD29033C flash we need to resend the command of *
779                  * reading flash protection for upper 8 Mb of flash     */
780                 if (i == 32) {
781                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
782                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
783                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
784                 }
785
786                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
787                         info->protect[i] = 0;
788                 else
789                         info->protect[i] = addr2[2] & 1;
790         }
791
792         /* issue bank reset to return to read mode */
793         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
794
795         return (info->size);
796 }
797
798 static int wait_for_DQ7_2(flash_info_t * info, int sect)
799 {
800         ulong start, now, last;
801         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
802             (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
803
804         start = get_timer(0);
805         last = start;
806         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
807                (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
808                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
809                         printf("Timeout\n");
810                         return -1;
811                 }
812                 /* show that we're waiting */
813                 if ((now - last) > 1000) {      /* every second */
814                         putc('.');
815                         last = now;
816                 }
817         }
818         return 0;
819 }
820
821 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
822 {
823         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
824         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
825         int flag, prot, sect;
826         int i;
827
828         if ((s_first < 0) || (s_first > s_last)) {
829                 if (info->flash_id == FLASH_UNKNOWN) {
830                         printf("- missing\n");
831                 } else {
832                         printf("- no sectors to erase\n");
833                 }
834                 return 1;
835         }
836
837         if (info->flash_id == FLASH_UNKNOWN) {
838                 printf("Can't erase unknown flash type - aborted\n");
839                 return 1;
840         }
841
842         prot = 0;
843         for (sect = s_first; sect <= s_last; ++sect) {
844                 if (info->protect[sect]) {
845                         prot++;
846                 }
847         }
848
849         if (prot) {
850                 printf("- Warning: %d protected sectors will not be erased!\n",
851                        prot);
852         } else {
853                 printf("\n");
854         }
855
856         /* Disable interrupts which might cause a timeout here */
857         flag = disable_interrupts();
858
859         /* Start erase on unprotected sectors */
860         for (sect = s_first; sect <= s_last; sect++) {
861                 if (info->protect[sect] == 0) { /* not protected */
862                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
863
864                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
865                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
866                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
867                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
868                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
869                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
870                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
871                                 for (i = 0; i < 50; i++)
872                                         udelay(1000);   /* wait 1 ms */
873                         } else {
874                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
875                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
876                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
877                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
878                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
879                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
880                         }
881                         /*
882                          * Wait for each sector to complete, it's more
883                          * reliable.  According to AMD Spec, you must
884                          * issue all erase commands within a specified
885                          * timeout.  This has been seen to fail, especially
886                          * if printf()s are included (for debug)!!
887                          */
888                         wait_for_DQ7_2(info, sect);
889                 }
890         }
891
892         /* re-enable interrupts if necessary */
893         if (flag)
894                 enable_interrupts();
895
896         /* wait at least 80us - let's wait 1 ms */
897         udelay(1000);
898
899         /* reset to read mode */
900         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
901         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
902
903         printf(" done\n");
904         return 0;
905 }
906
907 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
908 {
909         ulong *data_ptr = &data;
910         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
911         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
912         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
913         ulong start;
914         int i;
915
916         /* Check if Flash is (sufficiently) erased */
917         if ((*((vu_long *)dest) & data) != data) {
918                 return (2);
919         }
920
921         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
922                 int flag;
923
924                 /* Disable interrupts which might cause a timeout here */
925                 flag = disable_interrupts();
926
927                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
928                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
929                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
930
931                 dest2[i] = data2[i];
932
933                 /* re-enable interrupts if necessary */
934                 if (flag)
935                         enable_interrupts();
936
937                 /* data polling for D7 */
938                 start = get_timer(0);
939                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
940                        (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
941
942                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
943                                 return (1);
944                         }
945                 }
946         }
947
948         return (0);
949 }
950 #endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */