3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <asm/inca-ip.h>
27 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
29 /* NOTE - CONFIG_FLASH_16BIT means the CPU interface is 16-bit, it
30 * has nothing to do with the flash chip being 8-bit or 16-bit.
32 #ifdef CONFIG_FLASH_16BIT
33 typedef unsigned short FLASH_PORT_WIDTH;
34 typedef volatile unsigned short FLASH_PORT_WIDTHV;
35 #define FLASH_ID_MASK 0xFFFF
37 typedef unsigned long FLASH_PORT_WIDTH;
38 typedef volatile unsigned long FLASH_PORT_WIDTHV;
39 #define FLASH_ID_MASK 0xFFFFFFFF
42 #define FPW FLASH_PORT_WIDTH
43 #define FPWV FLASH_PORT_WIDTHV
45 #define ORMASK(size) ((-size) & OR_AM_MSK)
48 #define FLASH_CYCLE1 0x0555
49 #define FLASH_CYCLE2 0x02aa
51 #define FLASH_CYCLE1 0x0554
52 #define FLASH_CYCLE2 0x02ab
55 /*-----------------------------------------------------------------------
58 static ulong flash_get_size(FPWV *addr, flash_info_t *info);
59 static void flash_reset(flash_info_t *info);
60 static int write_word_intel(flash_info_t *info, FPWV *dest, FPW data);
61 static int write_word_amd(flash_info_t *info, FPWV *dest, FPW data);
62 static void flash_get_offsets(ulong base, flash_info_t *info);
63 static flash_info_t *flash_get_info(ulong base);
65 /*-----------------------------------------------------------------------
68 * sets up flash_info and returns size of FLASH (bytes)
70 unsigned long flash_init (void)
72 unsigned long size = 0;
75 /* Init: no FLASHes known */
76 for (i=0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
77 ulong flashbase = (i == 0) ? PHYS_FLASH_1 : PHYS_FLASH_2;
78 ulong * buscon = (ulong *)
79 ((i == 0) ? INCA_IP_EBU_EBU_BUSCON0 : INCA_IP_EBU_EBU_BUSCON2);
81 /* Disable write protection */
82 *buscon &= ~INCA_IP_EBU_EBU_BUSCON1_WRDIS;
85 memset(&flash_info[i], 0, sizeof(flash_info_t));
89 flash_get_size((FPW *)flashbase, &flash_info[i]);
91 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
92 printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx\n",
93 i, flash_info[i].size);
96 size += flash_info[i].size;
99 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
100 /* monitor protection ON by default */
101 flash_protect(FLAG_PROTECT_SET,
102 CONFIG_SYS_MONITOR_BASE,
103 CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
104 flash_get_info(CONFIG_SYS_MONITOR_BASE));
107 #ifdef CONFIG_ENV_IS_IN_FLASH
108 /* ENV protection ON by default */
109 flash_protect(FLAG_PROTECT_SET,
111 CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1,
112 flash_get_info(CONFIG_ENV_ADDR));
119 /*-----------------------------------------------------------------------
121 static void flash_reset(flash_info_t *info)
123 FPWV *base = (FPWV *)(info->start[0]);
125 /* Put FLASH back in read mode */
126 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
127 *base = (FPW)0x00FF00FF; /* Intel Read Mode */
128 else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
129 *base = (FPW)0x00F000F0; /* AMD Read Mode */
132 /*-----------------------------------------------------------------------
134 static void flash_get_offsets (ulong base, flash_info_t *info)
138 /* set up sector start address table */
139 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL
140 && (info->flash_id & FLASH_BTYPE)) {
141 int bootsect_size; /* number of bytes/boot sector */
142 int sect_size; /* number of bytes/regular sector */
144 bootsect_size = 0x00002000 * (sizeof(FPW)/2);
145 sect_size = 0x00010000 * (sizeof(FPW)/2);
147 /* set sector offsets for bottom boot block type */
148 for (i = 0; i < 8; ++i) {
149 info->start[i] = base + (i * bootsect_size);
151 for (i = 8; i < info->sector_count; i++) {
152 info->start[i] = base + ((i - 7) * sect_size);
155 else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD
156 && (info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U) {
158 int sect_size; /* number of bytes/sector */
160 sect_size = 0x00010000 * (sizeof(FPW)/2);
162 /* set up sector start address table (uniform sector type) */
163 for( i = 0; i < info->sector_count; i++ )
164 info->start[i] = base + (i * sect_size);
168 /*-----------------------------------------------------------------------
171 static flash_info_t *flash_get_info(ulong base)
176 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i ++) {
177 info = & flash_info[i];
178 if (info->start[0] <= base && base < info->start[0] + info->size)
182 return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info;
185 /*-----------------------------------------------------------------------
188 void flash_print_info (flash_info_t *info)
194 uchar botbootletter[] = "B";
195 uchar topbootletter[] = "T";
196 uchar botboottype[] = "bottom boot sector";
197 uchar topboottype[] = "top boot sector";
199 if (info->flash_id == FLASH_UNKNOWN) {
200 printf ("missing or unknown FLASH type\n");
204 switch (info->flash_id & FLASH_VENDMASK) {
205 case FLASH_MAN_AMD: printf ("AMD "); break;
206 case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break;
207 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
208 case FLASH_MAN_SST: printf ("SST "); break;
209 case FLASH_MAN_STM: printf ("STM "); break;
210 case FLASH_MAN_INTEL: printf ("INTEL "); break;
211 default: printf ("Unknown Vendor "); break;
214 /* check for top or bottom boot, if it applies */
215 if (info->flash_id & FLASH_BTYPE) {
216 boottype = botboottype;
217 bootletter = botbootletter;
220 boottype = topboottype;
221 bootletter = topbootletter;
224 switch (info->flash_id & FLASH_TYPEMASK) {
226 fmt = "29LV641D (64 Mbit, uniform sectors)\n";
228 case FLASH_28F800C3B:
229 case FLASH_28F800C3T:
230 fmt = "28F800C3%s (8 Mbit, %s)\n";
232 case FLASH_INTEL800B:
233 case FLASH_INTEL800T:
234 fmt = "28F800B3%s (8 Mbit, %s)\n";
236 case FLASH_28F160C3B:
237 case FLASH_28F160C3T:
238 fmt = "28F160C3%s (16 Mbit, %s)\n";
240 case FLASH_INTEL160B:
241 case FLASH_INTEL160T:
242 fmt = "28F160B3%s (16 Mbit, %s)\n";
244 case FLASH_28F320C3B:
245 case FLASH_28F320C3T:
246 fmt = "28F320C3%s (32 Mbit, %s)\n";
248 case FLASH_INTEL320B:
249 case FLASH_INTEL320T:
250 fmt = "28F320B3%s (32 Mbit, %s)\n";
252 case FLASH_28F640C3B:
253 case FLASH_28F640C3T:
254 fmt = "28F640C3%s (64 Mbit, %s)\n";
256 case FLASH_INTEL640B:
257 case FLASH_INTEL640T:
258 fmt = "28F640B3%s (64 Mbit, %s)\n";
261 fmt = "Unknown Chip Type\n";
265 printf (fmt, bootletter, boottype);
267 printf (" Size: %ld MB in %d Sectors\n",
271 printf (" Sector Start Addresses:");
273 for (i=0; i<info->sector_count; ++i) {
278 printf (" %08lX%s", info->start[i],
279 info->protect[i] ? " (RO)" : " ");
285 /*-----------------------------------------------------------------------
289 * The following code cannot be run from FLASH!
292 ulong flash_get_size (FPWV *addr, flash_info_t *info)
294 /* Write auto select command: read Manufacturer ID */
296 /* Write auto select command sequence and test FLASH answer */
297 addr[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* for AMD, Intel ignores this */
298 addr[FLASH_CYCLE2] = (FPW)0x00550055; /* for AMD, Intel ignores this */
299 addr[FLASH_CYCLE1] = (FPW)0x00900090; /* selects Intel or AMD */
301 /* The manufacturer codes are only 1 byte, so just use 1 byte.
302 * This works for any bus width and any FLASH device width.
304 switch (addr[1] & 0xff) {
306 case (uchar)AMD_MANUFACT:
307 info->flash_id = FLASH_MAN_AMD;
310 case (uchar)INTEL_MANUFACT:
311 info->flash_id = FLASH_MAN_INTEL;
315 info->flash_id = FLASH_UNKNOWN;
316 info->sector_count = 0;
321 /* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */
322 if (info->flash_id != FLASH_UNKNOWN) switch (addr[0]) {
324 case (FPW)AMD_ID_LV640U: /* 29LV640 and 29LV641 have same ID */
325 info->flash_id += FLASH_AM640U;
326 info->sector_count = 128;
327 info->size = 0x00800000 * (sizeof(FPW)/2);
328 break; /* => 8 or 16 MB */
330 case (FPW)INTEL_ID_28F800C3B:
331 info->flash_id += FLASH_28F800C3B;
332 info->sector_count = 23;
333 info->size = 0x00100000 * (sizeof(FPW)/2);
334 break; /* => 1 or 2 MB */
336 case (FPW)INTEL_ID_28F800B3B:
337 info->flash_id += FLASH_INTEL800B;
338 info->sector_count = 23;
339 info->size = 0x00100000 * (sizeof(FPW)/2);
340 break; /* => 1 or 2 MB */
342 case (FPW)INTEL_ID_28F160C3B:
343 info->flash_id += FLASH_28F160C3B;
344 info->sector_count = 39;
345 info->size = 0x00200000 * (sizeof(FPW)/2);
346 break; /* => 2 or 4 MB */
348 case (FPW)INTEL_ID_28F160B3B:
349 info->flash_id += FLASH_INTEL160B;
350 info->sector_count = 39;
351 info->size = 0x00200000 * (sizeof(FPW)/2);
352 break; /* => 2 or 4 MB */
354 case (FPW)INTEL_ID_28F320C3B:
355 info->flash_id += FLASH_28F320C3B;
356 info->sector_count = 71;
357 info->size = 0x00400000 * (sizeof(FPW)/2);
358 break; /* => 4 or 8 MB */
360 case (FPW)INTEL_ID_28F320B3B:
361 info->flash_id += FLASH_INTEL320B;
362 info->sector_count = 71;
363 info->size = 0x00400000 * (sizeof(FPW)/2);
364 break; /* => 4 or 8 MB */
366 case (FPW)INTEL_ID_28F640C3B:
367 info->flash_id += FLASH_28F640C3B;
368 info->sector_count = 135;
369 info->size = 0x00800000 * (sizeof(FPW)/2);
370 break; /* => 8 or 16 MB */
372 case (FPW)INTEL_ID_28F640B3B:
373 info->flash_id += FLASH_INTEL640B;
374 info->sector_count = 135;
375 info->size = 0x00800000 * (sizeof(FPW)/2);
376 break; /* => 8 or 16 MB */
379 info->flash_id = FLASH_UNKNOWN;
380 info->sector_count = 0;
382 return (0); /* => no or unknown flash */
385 flash_get_offsets((ulong)addr, info);
387 /* Put FLASH back in read mode */
393 /*-----------------------------------------------------------------------
396 int flash_erase (flash_info_t *info, int s_first, int s_last)
399 int flag, prot, sect;
400 int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL;
401 ulong start, now, last;
404 if ((s_first < 0) || (s_first > s_last)) {
405 if (info->flash_id == FLASH_UNKNOWN) {
406 printf ("- missing\n");
408 printf ("- no sectors to erase\n");
413 switch (info->flash_id & FLASH_TYPEMASK) {
414 case FLASH_INTEL800B:
415 case FLASH_INTEL160B:
416 case FLASH_INTEL320B:
417 case FLASH_INTEL640B:
418 case FLASH_28F800C3B:
419 case FLASH_28F160C3B:
420 case FLASH_28F320C3B:
421 case FLASH_28F640C3B:
426 printf ("Can't erase unknown flash type %08lx - aborted\n",
432 for (sect=s_first; sect<=s_last; ++sect) {
433 if (info->protect[sect]) {
439 printf ("- Warning: %d protected sectors will not be erased!\n",
447 /* Start erase on unprotected sectors */
448 for (sect = s_first; sect<=s_last && rcode == 0; sect++) {
450 if (info->protect[sect] != 0) /* protected, skip it */
453 /* Disable interrupts which might cause a timeout here */
454 flag = disable_interrupts();
456 addr = (FPWV *)(info->start[sect]);
458 *addr = (FPW)0x00500050; /* clear status register */
459 *addr = (FPW)0x00200020; /* erase setup */
460 *addr = (FPW)0x00D000D0; /* erase confirm */
463 /* must be AMD style if not Intel */
464 FPWV *base; /* first address in bank */
466 base = (FPWV *)(info->start[0]);
467 base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
468 base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
469 base[FLASH_CYCLE1] = (FPW)0x00800080; /* erase mode */
470 base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
471 base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
472 *addr = (FPW)0x00300030; /* erase sector */
475 /* re-enable interrupts if necessary */
479 start = get_timer(0);
481 /* wait at least 50us for AMD, 80us for Intel.
486 while ((*addr & (FPW)0x00800080) != (FPW)0x00800080) {
487 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
488 printf ("Timeout\n");
492 *addr = (FPW)0x00B000B0;
495 flash_reset(info); /* reset to read mode */
496 rcode = 1; /* failed */
500 /* show that we're waiting */
501 if ((get_timer(last)) > CONFIG_SYS_HZ) {/* every second */
507 /* show that we're waiting */
508 if ((get_timer(last)) > CONFIG_SYS_HZ) { /* every second */
513 flash_reset(info); /* reset to read mode */
520 /*-----------------------------------------------------------------------
521 * Copy memory to flash, returns:
524 * 2 - Flash not erased
526 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
528 FPW data = 0; /* 16 or 32 bit word, matches flash bus width on MPC8XX */
529 int bytes; /* number of bytes to program in current word */
530 int left; /* number of bytes left to program */
533 for (left = cnt, res = 0;
534 left > 0 && res == 0;
535 addr += sizeof(data), left -= sizeof(data) - bytes) {
537 bytes = addr & (sizeof(data) - 1);
538 addr &= ~(sizeof(data) - 1);
540 /* combine source and destination data so can program
541 * an entire word of 16 or 32 bits
543 for (i = 0; i < sizeof(data); i++) {
545 if (i < bytes || i - bytes >= left )
546 data += *((uchar *)addr + i);
551 /* write one word to the flash */
552 switch (info->flash_id & FLASH_VENDMASK) {
554 res = write_word_amd(info, (FPWV *)addr, data);
556 case FLASH_MAN_INTEL:
557 res = write_word_intel(info, (FPWV *)addr, data);
560 /* unknown flash type, error! */
561 printf ("missing or unknown FLASH type\n");
562 res = 1; /* not really a timeout, but gives error */
570 /*-----------------------------------------------------------------------
571 * Write a word to Flash for AMD FLASH
572 * A word is 16 or 32 bits, whichever the bus width of the flash bank
573 * (not an individual chip) is.
578 * 2 - Flash not erased
580 static int write_word_amd (flash_info_t *info, FPWV *dest, FPW data)
584 int res = 0; /* result, assume success */
585 FPWV *base; /* first address in flash bank */
587 /* Check if Flash is (sufficiently) erased */
588 if ((*dest & data) != data) {
593 base = (FPWV *)(info->start[0]);
595 /* Disable interrupts which might cause a timeout here */
596 flag = disable_interrupts();
598 base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
599 base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
600 base[FLASH_CYCLE1] = (FPW)0x00A000A0; /* selects program mode */
602 *dest = data; /* start programming the data */
604 /* re-enable interrupts if necessary */
608 start = get_timer (0);
610 /* data polling for D7 */
611 while (res == 0 && (*dest & (FPW)0x00800080) != (data & (FPW)0x00800080)) {
612 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
613 *dest = (FPW)0x00F000F0; /* reset bank */
621 /*-----------------------------------------------------------------------
622 * Write a word to Flash for Intel FLASH
623 * A word is 16 or 32 bits, whichever the bus width of the flash bank
624 * (not an individual chip) is.
629 * 2 - Flash not erased
631 static int write_word_intel (flash_info_t *info, FPWV *dest, FPW data)
635 int res = 0; /* result, assume success */
637 /* Check if Flash is (sufficiently) erased */
638 if ((*dest & data) != data) {
642 /* Disable interrupts which might cause a timeout here */
643 flag = disable_interrupts();
645 *dest = (FPW)0x00500050; /* clear status register */
646 *dest = (FPW)0x00FF00FF; /* make sure in read mode */
647 *dest = (FPW)0x00400040; /* program setup */
649 *dest = data; /* start programming the data */
651 /* re-enable interrupts if necessary */
655 start = get_timer (0);
657 while (res == 0 && (*dest & (FPW)0x00800080) != (FPW)0x00800080) {
658 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
659 *dest = (FPW)0x00B000B0; /* Suspend program */
664 if (res == 0 && (*dest & (FPW)0x00100010))
665 res = 1; /* write failed, time out error is close enough */
667 *dest = (FPW)0x00500050; /* clear status register */
668 *dest = (FPW)0x00FF00FF; /* make sure in read mode */