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1 /*
2  * (C) Copyright 2006
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 <ppc4xx.h>
36 #include <asm/processor.h>
37 #include <ppc440.h>
38 #include "yucca.h"
39
40 #ifdef DEBUG
41 #define DEBUGF(x...) printf(x)
42 #else
43 #define DEBUGF(x...)
44 #endif                          /* DEBUG */
45
46 flash_info_t flash_info[CFG_MAX_FLASH_BANKS];   /* info for FLASH chips */
47
48 /*
49  * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
50  */
51 static unsigned long flash_addr_table[][CFG_MAX_FLASH_BANKS] = {
52         {0xfff00000, 0xfff80000, 0xe7c00001}, /* 0:boot from small flash */
53         {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
54         {0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
55         {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
56         {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
57         {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
58         {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
59         {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
60         {0xfff00000, 0xfff80000, 0xe7c00001}, /* 8:boot from small flash */
61 };
62
63 /*
64  * include common flash code (for amcc boards)
65  */
66 /*-----------------------------------------------------------------------
67  * Functions
68  */
69 static int write_word(flash_info_t * info, ulong dest, ulong data);
70 #ifdef CFG_FLASH_2ND_16BIT_DEV
71 static int write_word_1(flash_info_t * info, ulong dest, ulong data);
72 static int write_word_2(flash_info_t * info, ulong dest, ulong data);
73 static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
74 static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
75 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
76 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
77 #endif
78
79 void flash_print_info(flash_info_t * info)
80 {
81         int i;
82         int k;
83         int size;
84         int erased;
85         volatile unsigned long *flash;
86
87         if (info->flash_id == FLASH_UNKNOWN) {
88                 printf("missing or unknown FLASH type\n");
89                 return;
90         }
91
92         switch (info->flash_id & FLASH_VENDMASK) {
93                 case FLASH_MAN_AMD:
94                         printf("AMD ");
95                         break;
96                 case FLASH_MAN_STM:
97                         printf("STM ");
98                         break;
99                 case FLASH_MAN_FUJ:
100                         printf("FUJITSU ");
101                         break;
102                 case FLASH_MAN_SST:
103                         printf("SST ");
104                         break;
105                 case FLASH_MAN_MX:
106                         printf("MIXC ");
107                         break;
108                 default:
109                         printf("Unknown Vendor ");
110                         break;
111         }
112
113         switch (info->flash_id & FLASH_TYPEMASK) {
114                 case FLASH_AM040:
115                         printf("AM29F040 (512 Kbit, uniform sector size)\n");
116                         break;
117                 case FLASH_AM400B:
118                         printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
119                         break;
120                 case FLASH_AM400T:
121                         printf("AM29LV400T (4 Mbit, top boot sector)\n");
122                         break;
123                 case FLASH_AM800B:
124                         printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
125                         break;
126                 case FLASH_AM800T:
127                         printf("AM29LV800T (8 Mbit, top boot sector)\n");
128                         break;
129                 case FLASH_AMD016:
130                         printf("AM29F016D (16 Mbit, uniform sector size)\n");
131                         break;
132                 case FLASH_AM160B:
133                         printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
134                         break;
135                 case FLASH_AM160T:
136                         printf("AM29LV160T (16 Mbit, top boot sector)\n");
137                         break;
138                 case FLASH_AM320B:
139                         printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
140                         break;
141                 case FLASH_AM320T:
142                         printf("AM29LV320T (32 Mbit, top boot sector)\n");
143                         break;
144                 case FLASH_AM033C:
145                         printf("AM29LV033C (32 Mbit, top boot sector)\n");
146                         break;
147                 case FLASH_SST800A:
148                         printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
149                         break;
150                 case FLASH_SST160A:
151                         printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
152                         break;
153                 case FLASH_STMW320DT:
154                         printf ("M29W320DT (32 M, top sector)\n");
155                         break;
156                 case FLASH_MXLV320T:
157                         printf ("MXLV320T (32 Mbit, top sector)\n");
158                         break;
159                 default:
160                         printf("Unknown Chip Type\n");
161                         break;
162         }
163
164         printf("  Size: %ld KB in %d Sectors\n",
165                         info->size >> 10, info->sector_count);
166
167         printf("  Sector Start Addresses:");
168         for (i = 0; i < info->sector_count; ++i) {
169                 /*
170                  * Check if whole sector is erased
171                  */
172                 if (i != (info->sector_count - 1))
173                         size = info->start[i + 1] - info->start[i];
174                 else
175                         size = info->start[0] + info->size - info->start[i];
176                 erased = 1;
177                 flash = (volatile unsigned long *)info->start[i];
178                 size = size >> 2;       /* divide by 4 for longword access */
179                 for (k = 0; k < size; k++) {
180                         if (*flash++ != 0xffffffff) {
181                                 erased = 0;
182                                 break;
183                         }
184                 }
185
186                 if ((i % 5) == 0)
187                         printf("\n   ");
188                 printf(" %08lX%s%s",
189                                 info->start[i],
190                                 erased ? " E" : "  ",
191                                 info->protect[i] ? "RO " : "   ");
192         }
193         printf("\n");
194         return;
195 }
196
197
198 /*
199  * The following code cannot be run from FLASH!
200  */
201 #ifdef CFG_FLASH_2ND_16BIT_DEV
202 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
203 {
204         /* bit 0 used for big flash marking */
205         if ((ulong)addr & 0x1)
206                 return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
207         else
208                 return flash_get_size_1(addr, info);
209 }
210
211 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
212 #else
213 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
214 #endif
215 {
216         short i;
217         CFG_FLASH_WORD_SIZE value;
218         ulong base = (ulong) addr;
219         volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
220
221         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
222
223         /* Write auto select command: read Manufacturer ID */
224         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
225         addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
226         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
227         udelay(1000);
228
229         value = addr2[0];
230         DEBUGF("FLASH MANUFACT: %x\n", value);
231
232         switch (value) {
233                 case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
234                         info->flash_id = FLASH_MAN_AMD;
235                         break;
236                 case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:
237                         info->flash_id = FLASH_MAN_FUJ;
238                         break;
239                 case (CFG_FLASH_WORD_SIZE) SST_MANUFACT:
240                         info->flash_id = FLASH_MAN_SST;
241                         break;
242                 case (CFG_FLASH_WORD_SIZE) STM_MANUFACT:
243                         info->flash_id = FLASH_MAN_STM;
244                         break;
245                 default:
246                         info->flash_id = FLASH_UNKNOWN;
247                         info->sector_count = 0;
248                         info->size = 0;
249                         return (0);     /* no or unknown flash  */
250         }
251
252         value = addr2[1];       /* device ID            */
253         DEBUGF("\nFLASH DEVICEID: %x\n", value);
254
255         switch (value) {
256                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV040B:
257                         info->flash_id += FLASH_AM040;
258                         info->sector_count = 8;
259                         info->size = 0x0080000; /* => 512 ko */
260                         break;
261
262                 case (CFG_FLASH_WORD_SIZE) AMD_ID_F040B:
263                         info->flash_id += FLASH_AM040;
264                         info->sector_count = 8;
265                         info->size = 0x0080000; /* => 512 ko */
266                         break;
267
268                 case (CFG_FLASH_WORD_SIZE) STM_ID_M29W040B:
269                         info->flash_id += FLASH_AM040;
270                         info->sector_count = 8;
271                         info->size = 0x0080000; /* => 512 ko */
272                         break;
273
274                 case (CFG_FLASH_WORD_SIZE) AMD_ID_F016D:
275                         info->flash_id += FLASH_AMD016;
276                         info->sector_count = 32;
277                         info->size = 0x00200000;
278                         break;          /* => 2 MB              */
279
280                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV033C:
281                         info->flash_id += FLASH_AMDLV033C;
282                         info->sector_count = 64;
283                         info->size = 0x00400000;
284                         break;          /* => 4 MB              */
285
286                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV400T:
287                         info->flash_id += FLASH_AM400T;
288                         info->sector_count = 11;
289                         info->size = 0x00080000;
290                         break;          /* => 0.5 MB            */
291
292                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV400B:
293                         info->flash_id += FLASH_AM400B;
294                         info->sector_count = 11;
295                         info->size = 0x00080000;
296                         break;          /* => 0.5 MB            */
297
298                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800T:
299                         info->flash_id += FLASH_AM800T;
300                         info->sector_count = 19;
301                         info->size = 0x00100000;
302                         break;          /* => 1 MB              */
303
304                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800B:
305                         info->flash_id += FLASH_AM800B;
306                         info->sector_count = 19;
307                         info->size = 0x00100000;
308                         break;          /* => 1 MB              */
309
310                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160T:
311                         info->flash_id += FLASH_AM160T;
312                         info->sector_count = 35;
313                         info->size = 0x00200000;
314                         break;          /* => 2 MB              */
315
316                 case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160B:
317                         info->flash_id += FLASH_AM160B;
318                         info->sector_count = 35;
319                         info->size = 0x00200000;
320                         break;          /* => 2 MB              */
321
322                 default:
323                         info->flash_id = FLASH_UNKNOWN;
324                         return (0);     /* => no or unknown flash */
325         }
326
327         /* set up sector start address table */
328         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
329                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
330                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
331                 for (i = 0; i < info->sector_count; i++)
332                         info->start[i] = base + (i * 0x00010000);
333         } else {
334                 if (info->flash_id & FLASH_BTYPE) {
335                         /* set sector offsets for bottom boot block type        */
336                         info->start[0] = base + 0x00000000;
337                         info->start[1] = base + 0x00004000;
338                         info->start[2] = base + 0x00006000;
339                         info->start[3] = base + 0x00008000;
340                         for (i = 4; i < info->sector_count; i++) {
341                                 info->start[i] =
342                                         base + (i * 0x00010000) - 0x00030000;
343                         }
344                 } else {
345                         /* set sector offsets for top boot block type           */
346                         i = info->sector_count - 1;
347                         info->start[i--] = base + info->size - 0x00004000;
348                         info->start[i--] = base + info->size - 0x00006000;
349                         info->start[i--] = base + info->size - 0x00008000;
350                         for (; i >= 0; i--) {
351                                 info->start[i] = base + i * 0x00010000;
352                         }
353                 }
354         }
355
356         /* check for protected sectors */
357         for (i = 0; i < info->sector_count; i++) {
358                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
359                 /* D0 = 1 if protected */
360                 addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
361
362                 /* For AMD29033C flash we need to resend the command of *
363                  * reading flash protection for upper 8 Mb of flash     */
364                 if (i == 32) {
365                         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAAAAAAAA;
366                         addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55555555;
367                         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90909090;
368                 }
369
370                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
371                         info->protect[i] = 0;
372                 else
373                         info->protect[i] = addr2[2] & 1;
374         }
375
376         /* issue bank reset to return to read mode */
377         addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
378
379         return (info->size);
380 }
381
382 static int wait_for_DQ7_1(flash_info_t * info, int sect)
383 {
384         ulong start, now, last;
385         volatile CFG_FLASH_WORD_SIZE *addr =
386                 (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
387
388         start = get_timer(0);
389         last = start;
390         while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
391                         (CFG_FLASH_WORD_SIZE) 0x00800080) {
392                 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
393                         printf("Timeout\n");
394                         return -1;
395                 }
396                 /* show that we're waiting */
397                 if ((now - last) > 1000) {      /* every second */
398                         putc('.');
399                         last = now;
400                 }
401         }
402         return 0;
403 }
404
405 #ifdef CFG_FLASH_2ND_16BIT_DEV
406 int flash_erase(flash_info_t * info, int s_first, int s_last)
407 {
408         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
409                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
410                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
411                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
412                 return flash_erase_2(info, s_first, s_last);
413         } else {
414                 return flash_erase_1(info, s_first, s_last);
415         }
416 }
417
418 static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
419 #else
420 int flash_erase(flash_info_t * info, int s_first, int s_last)
421 #endif
422 {
423         volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
424         volatile CFG_FLASH_WORD_SIZE *addr2;
425         int flag, prot, sect, l_sect;
426         int i;
427
428         if ((s_first < 0) || (s_first > s_last)) {
429                 if (info->flash_id == FLASH_UNKNOWN)
430                         printf("- missing\n");
431                 else
432                         printf("- no sectors to erase\n");
433                 return 1;
434         }
435
436         if (info->flash_id == FLASH_UNKNOWN) {
437                 printf("Can't erase unknown flash type - aborted\n");
438                 return 1;
439         }
440
441         prot = 0;
442         for (sect = s_first; sect <= s_last; ++sect) {
443                 if (info->protect[sect])
444                         prot++;
445         }
446
447         if (prot)
448                 printf("- Warning: %d protected sectors will not be erased!", prot);
449
450         printf("\n");
451
452         l_sect = -1;
453
454         /* Disable interrupts which might cause a timeout here */
455         flag = disable_interrupts();
456
457         /* Start erase on unprotected sectors */
458         for (sect = s_first; sect <= s_last; sect++) {
459                 if (info->protect[sect] == 0) { /* not protected */
460                         addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
461
462                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
463                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
464                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
465                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
466                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
467                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
468                                 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00500050;    /* block erase */
469                                 for (i = 0; i < 50; i++)
470                                         udelay(1000);   /* wait 1 ms */
471                         } else {
472                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
473                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
474                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
475                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
476                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
477                                 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030;    /* sector erase */
478                         }
479                         l_sect = sect;
480                         /*
481                          * Wait for each sector to complete, it's more
482                          * reliable.  According to AMD Spec, you must
483                          * issue all erase commands within a specified
484                          * timeout.  This has been seen to fail, especially
485                          * if printf()s are included (for debug)!!
486                          */
487                         wait_for_DQ7_1(info, sect);
488                 }
489         }
490
491         /* re-enable interrupts if necessary */
492         if (flag)
493                 enable_interrupts();
494
495         /* wait at least 80us - let's wait 1 ms */
496         udelay(1000);
497
498         /* reset to read mode */
499         addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
500         addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;     /* reset bank */
501
502         printf(" done\n");
503         return 0;
504 }
505
506 /*-----------------------------------------------------------------------
507  * Copy memory to flash, returns:
508  * 0 - OK
509  * 1 - write timeout
510  * 2 - Flash not erased
511  */
512 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
513 {
514         ulong cp, wp, data;
515         int i, l, rc;
516
517         wp = (addr & ~3);       /* get lower word aligned address */
518
519         /*
520          * handle unaligned start bytes
521          */
522         if ((l = addr - wp) != 0) {
523                 data = 0;
524                 for (i = 0, cp = wp; i < l; ++i, ++cp)
525                         data = (data << 8) | (*(uchar *) cp);
526
527                 for (; i < 4 && cnt > 0; ++i) {
528                         data = (data << 8) | *src++;
529                         --cnt;
530                         ++cp;
531                 }
532
533                 for (; cnt == 0 && i < 4; ++i, ++cp)
534                         data = (data << 8) | (*(uchar *) cp);
535
536                 if ((rc = write_word(info, wp, data)) != 0)
537                         return (rc);
538
539                 wp += 4;
540         }
541
542         /*
543          * handle word aligned part
544          */
545         while (cnt >= 4) {
546                 data = 0;
547                 for (i = 0; i < 4; ++i)
548                         data = (data << 8) | *src++;
549
550                 if ((rc = write_word(info, wp, data)) != 0)
551                         return (rc);
552
553                 wp += 4;
554                 cnt -= 4;
555         }
556
557         if (cnt == 0)
558                 return (0);
559
560         /*
561          * handle unaligned tail bytes
562          */
563         data = 0;
564         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
565                 data = (data << 8) | *src++;
566                 --cnt;
567         }
568         for (; i < 4; ++i, ++cp)
569                 data = (data << 8) | (*(uchar *) cp);
570
571         return (write_word(info, wp, data));
572 }
573
574 /*-----------------------------------------------------------------------
575  * Copy memory to flash, returns:
576  * 0 - OK
577  * 1 - write timeout
578  * 2 - Flash not erased
579  */
580 #ifdef CFG_FLASH_2ND_16BIT_DEV
581 static int write_word(flash_info_t * info, ulong dest, ulong data)
582 {
583         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
584                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
585                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
586                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
587                 return write_word_2(info, dest, data);
588         } else {
589                 return write_word_1(info, dest, data);
590         }
591 }
592
593 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
594 #else
595 static int write_word(flash_info_t * info, ulong dest, ulong data)
596 #endif
597 {
598         volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
599         volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
600         volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data;
601         ulong start;
602         int i, flag;
603
604         /* Check if Flash is (sufficiently) erased */
605         if ((*((vu_long *)dest) & data) != data)
606                 return (2);
607
608         for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
609                 /* Disable interrupts which might cause a timeout here */
610                 flag = disable_interrupts();
611
612                 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
613                 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
614                 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0;
615
616                 dest2[i] = data2[i];
617
618                 /* re-enable interrupts if necessary */
619                 if (flag)
620                         enable_interrupts();
621
622                 /* data polling for D7 */
623                 start = get_timer(0);
624                 while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
625                                 (data2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080)) {
626
627                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT)
628                                 return (1);
629                 }
630         }
631
632         return (0);
633 }
634
635 #ifdef CFG_FLASH_2ND_16BIT_DEV
636
637 #undef  CFG_FLASH_WORD_SIZE
638 #define CFG_FLASH_WORD_SIZE unsigned short
639
640 /*
641  * The following code cannot be run from FLASH!
642  */
643 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
644 {
645         short i;
646         int n;
647         CFG_FLASH_WORD_SIZE value;
648         ulong base = (ulong) addr;
649         volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
650
651         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
652
653         /* issue bank reset to return to read mode */
654         addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
655         /* Write auto select command: read Manufacturer ID */
656         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
657         addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
658         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
659         udelay(1000);
660
661         value = addr2[0];
662         DEBUGF("FLASH MANUFACT: %x\n", value);
663
664         switch (value) {
665                 case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
666                         info->flash_id = FLASH_MAN_AMD;
667                         break;
668                 case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:
669                         info->flash_id = FLASH_MAN_FUJ;
670                         break;
671                 case (CFG_FLASH_WORD_SIZE) SST_MANUFACT:
672                         info->flash_id = FLASH_MAN_SST;
673                         break;
674                 case (CFG_FLASH_WORD_SIZE) STM_MANUFACT:
675                         info->flash_id = FLASH_MAN_STM;
676                         break;
677                 case (CFG_FLASH_WORD_SIZE) MX_MANUFACT:
678                         info->flash_id = FLASH_MAN_MX;
679                         break;
680                 default:
681                         info->flash_id = FLASH_UNKNOWN;
682                         info->sector_count = 0;
683                         info->size = 0;
684                         return (0);     /* no or unknown flash  */
685         }
686
687         value = addr2[1];       /* device ID            */
688         DEBUGF("\nFLASH DEVICEID: %x\n", value);
689
690         switch (value) {
691                 case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T:
692                         info->flash_id += FLASH_AM320T;
693                         info->sector_count = 71;
694                         info->size = 0x00400000;
695                         break;  /* => 4 MB      */
696                 case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B:
697                         info->flash_id += FLASH_AM320B;
698                         info->sector_count = 71;
699                         info->size = 0x00400000;
700                         break;  /* => 4 MB      */
701                 case (CFG_FLASH_WORD_SIZE)STM_ID_29W320DT:
702                         info->flash_id += FLASH_STMW320DT;
703                         info->sector_count = 67;
704                         info->size = 0x00400000;
705                         break;  /* => 4 MB      */
706                 case (CFG_FLASH_WORD_SIZE)MX_ID_LV320T:
707                         info->flash_id += FLASH_MXLV320T;
708                         info->sector_count = 71;
709                         info->size = 0x00400000;
710                         break;  /* => 4 MB      */
711                 default:
712                         info->flash_id = FLASH_UNKNOWN;
713                         return (0);     /* => no or unknown flash */
714         }
715
716         /* set up sector start address table */
717         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
718                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
719                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
720                 for (i = 0; i < info->sector_count; i++)
721                         info->start[i] = base + (i * 0x00010000);
722         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
723                 /* set sector offsets for top boot block type           */
724                 base += info->size;
725                 i = info->sector_count;
726                 /*  1 x 16k boot sector */
727                 base -= 16 << 10;
728                 --i;
729                 info->start[i] = base;
730                 /*  2 x 8k  boot sectors */
731                 for (n = 0; n < 2; ++n) {
732                         base -= 8 << 10;
733                         --i;
734                         info->start[i] = base;
735                 }
736                 /*  1 x 32k boot sector */
737                 base -= 32 << 10;
738                 --i;
739                 info->start[i] = base;
740
741                 while (i > 0) {                 /* 64k regular sectors  */
742                         base -= 64 << 10;
743                         --i;
744                         info->start[i] = base;
745                 }
746         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
747                 i = info->sector_count - 1;
748                 info->start[i--] = base + info->size - 0x00002000;
749                 info->start[i--] = base + info->size - 0x00004000;
750                 info->start[i--] = base + info->size - 0x00006000;
751                 info->start[i--] = base + info->size - 0x00008000;
752                 info->start[i--] = base + info->size - 0x0000a000;
753                 info->start[i--] = base + info->size - 0x0000c000;
754                 info->start[i--] = base + info->size - 0x0000e000;
755                 info->start[i--] = base + info->size - 0x00010000;
756
757                 for (; i >= 0; i--)
758                         info->start[i] = base + i * 0x00010000;
759         } else {
760                 if (info->flash_id & FLASH_BTYPE) {
761                         /* set sector offsets for bottom boot block type        */
762                         info->start[0] = base + 0x00000000;
763                         info->start[1] = base + 0x00004000;
764                         info->start[2] = base + 0x00006000;
765                         info->start[3] = base + 0x00008000;
766
767                         for (i = 4; i < info->sector_count; i++)
768                                 info->start[i] = base + (i * 0x00010000) - 0x00030000;
769                 } else {
770                         /* set sector offsets for top boot block type           */
771                         i = info->sector_count - 1;
772                         info->start[i--] = base + info->size - 0x00004000;
773                         info->start[i--] = base + info->size - 0x00006000;
774                         info->start[i--] = base + info->size - 0x00008000;
775
776                         for (; i >= 0; i--)
777                                 info->start[i] = base + i * 0x00010000;
778                 }
779         }
780
781         /* check for protected sectors */
782         for (i = 0; i < info->sector_count; i++) {
783                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
784                 /* D0 = 1 if protected */
785                 addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
786
787                 /* For AMD29033C flash we need to resend the command of *
788                  * reading flash protection for upper 8 Mb of flash     */
789                 if (i == 32) {
790                         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAAAAAAAA;
791                         addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55555555;
792                         addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90909090;
793                 }
794
795                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
796                         info->protect[i] = 0;
797                 else
798                         info->protect[i] = addr2[2] & 1;
799         }
800
801         /* issue bank reset to return to read mode */
802         addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
803
804         return (info->size);
805 }
806
807 static int wait_for_DQ7_2(flash_info_t * info, int sect)
808 {
809         ulong start, now, last;
810         volatile CFG_FLASH_WORD_SIZE *addr =
811                 (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
812
813         start = get_timer(0);
814         last = start;
815         while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
816                         (CFG_FLASH_WORD_SIZE) 0x00800080) {
817                 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
818                         printf("Timeout\n");
819                         return -1;
820                 }
821                 /* show that we're waiting */
822                 if ((now - last) > 1000) {      /* every second */
823                         putc('.');
824                         last = now;
825                 }
826         }
827         return 0;
828 }
829
830 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
831 {
832         volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
833         volatile CFG_FLASH_WORD_SIZE *addr2;
834         int flag, prot, sect, l_sect;
835         int i;
836
837         if ((s_first < 0) || (s_first > s_last)) {
838                 if (info->flash_id == FLASH_UNKNOWN)
839                         printf("- missing\n");
840                 else
841                         printf("- no sectors to erase\n");
842                 return 1;
843         }
844
845         if (info->flash_id == FLASH_UNKNOWN) {
846                 printf("Can't erase unknown flash type - aborted\n");
847                 return 1;
848         }
849
850         prot = 0;
851         for (sect = s_first; sect <= s_last; ++sect) {
852                 if (info->protect[sect])
853                         prot++;
854         }
855
856         if (prot)
857                 printf("- Warning: %d protected sectors will not be erased!",   prot);
858
859         printf("\n");
860
861         l_sect = -1;
862
863         /* Disable interrupts which might cause a timeout here */
864         flag = disable_interrupts();
865
866         /* Start erase on unprotected sectors */
867         for (sect = s_first; sect <= s_last; sect++) {
868                 if (info->protect[sect] == 0) { /* not protected */
869                         addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
870
871                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
872                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
873                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
874                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
875                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
876                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
877                                 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00500050;    /* block erase */
878                                 for (i = 0; i < 50; i++)
879                                         udelay(1000);   /* wait 1 ms */
880                         } else {
881                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
882                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
883                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
884                                 addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
885                                 addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
886                                 addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030;    /* sector erase */
887                         }
888                         l_sect = sect;
889                         /*
890                          * Wait for each sector to complete, it's more
891                          * reliable.  According to AMD Spec, you must
892                          * issue all erase commands within a specified
893                          * timeout.  This has been seen to fail, especially
894                          * if printf()s are included (for debug)!!
895                          */
896                         wait_for_DQ7_2(info, sect);
897                 }
898         }
899
900         /* re-enable interrupts if necessary */
901         if (flag)
902                 enable_interrupts();
903
904         /* wait at least 80us - let's wait 1 ms */
905         udelay(1000);
906
907         /* reset to read mode */
908         addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
909         addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;     /* reset bank */
910
911         printf(" done\n");
912         return 0;
913 }
914
915 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
916 {
917         volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
918         volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
919         volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data;
920         ulong start;
921         int i;
922
923         /* Check if Flash is (sufficiently) erased */
924         if ((*((vu_long *)dest) & data) != data)
925                 return (2);
926
927         for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
928                 int flag;
929
930                 /* Disable interrupts which might cause a timeout here */
931                 flag = disable_interrupts();
932
933                 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
934                 addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
935                 addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0;
936
937                 dest2[i] = data2[i];
938
939                 /* re-enable interrupts if necessary */
940                 if (flag)
941                         enable_interrupts();
942
943                 /* data polling for D7 */
944                 start = get_timer(0);
945                 while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
946                                 (data2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080)) {
947
948                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT)
949                                 return (1);
950                 }
951         }
952
953         return (0);
954 }
955 #endif /* CFG_FLASH_2ND_16BIT_DEV */
956
957 /*-----------------------------------------------------------------------
958  * Functions
959  */
960 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
961 static int write_word(flash_info_t * info, ulong dest, ulong data);
962
963 /*-----------------------------------------------------------------------
964  */
965
966 unsigned long flash_init(void)
967 {
968         unsigned long total_b = 0;
969         unsigned long size_b[CFG_MAX_FLASH_BANKS];
970         unsigned short index = 0;
971         int i;
972         unsigned long val;
973         unsigned long ebc_boot_size;
974         unsigned long boot_selection;
975
976         mfsdr(sdr_pstrp0, val);
977         index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
978
979         if ((index == 0xc) || (index == 8)) {
980                 /*
981                  * Boot Settings in IIC EEprom address 0xA8 or 0xA0
982                  * Read Serial Device Strap Register1 in PPC440SPe
983                  */
984                 mfsdr(sdr_sdstp1, val);
985                 boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
986                 ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
987
988                 switch(boot_selection) {
989                         case SDR0_SDSTP1_BOOT_SEL_EBC:
990                                 switch(ebc_boot_size) {
991                                         case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
992                                                 index = 3;
993                                                 break;
994                                         case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
995                                                 index = 0;
996                                                 break;
997                                 }
998                                 break;
999
1000                         case SDR0_SDSTP1_BOOT_SEL_PCI:
1001                                 index = 1;
1002                                 break;
1003
1004                 }
1005         } /*else if (index == 0) {*/
1006 /*              if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE)*/
1007 /*                      index = 8;*/ /* sram below op code flash -> new index 8*/
1008 /*      }*/
1009
1010         DEBUGF("\n");
1011         DEBUGF("FLASH: Index: %d\n", index);
1012
1013         /* Init: no FLASHes known */
1014         for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
1015                 flash_info[i].flash_id = FLASH_UNKNOWN;
1016                 flash_info[i].sector_count = -1;
1017                 flash_info[i].size = 0;
1018
1019                 /* check whether the address is 0 */
1020                 if (flash_addr_table[index][i] == 0)
1021                         continue;
1022
1023                 /* call flash_get_size() to initialize sector address */
1024                 size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
1025                                 &flash_info[i]);
1026
1027                 flash_info[i].size = size_b[i];
1028
1029                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1030                         printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
1031                                         i, size_b[i], size_b[i] << 20);
1032                         flash_info[i].sector_count = -1;
1033                         flash_info[i].size = 0;
1034                 }
1035
1036                 /* Monitor protection ON by default */
1037                 (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
1038                                     CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
1039                                     &flash_info[i]);
1040 #if defined(CFG_ENV_IS_IN_FLASH)
1041                 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
1042                                     CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
1043                                     &flash_info[i]);
1044 #if defined(CFG_ENV_ADDR_REDUND)
1045                 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
1046                                     CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
1047                                     &flash_info[i]);
1048 #endif
1049 #endif
1050                 total_b += flash_info[i].size;
1051         }
1052
1053         return total_b;
1054 }