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,
27 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
29 #if defined(CFG_ENV_IS_IN_FLASH)
31 # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
34 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
36 # ifndef CFG_ENV_SECT_SIZE
37 # define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
41 /*-----------------------------------------------------------------------
44 static ulong flash_get_size (vu_long * addr, flash_info_t * info);
45 static int write_word (flash_info_t * info, ulong dest, ulong data);
46 static void flash_get_offsets (ulong base, flash_info_t * info);
48 /*-----------------------------------------------------------------------
51 unsigned long flash_init (void)
53 volatile immap_t *immap = (immap_t *) CFG_IMMR;
54 volatile memctl8xx_t *memctl = &immap->im_memctl;
55 unsigned long total_size;
56 unsigned long size_b0, size_b1;
59 /* Init: no FLASHes known */
60 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
61 flash_info[i].flash_id = FLASH_UNKNOWN;
67 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
69 flash_get_size ((vu_long *) (CFG_FLASH_BASE +
73 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
74 printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", i, size_b1, size_b1 >> 20);
77 /* Is this really needed ? - LP */
78 if (size_b1 > size_b0) {
79 printf ("## ERROR: Bank %d (0x%08lx = %ld MB) > Bank %d (0x%08lx = %ld MB)\n", i, size_b1, size_b1 >> 20, i - 1, size_b0, size_b0 >> 20);
83 total_size += size_b1;
86 /* Compute the Address Mask */
87 for (i = 0; (total_size >> i) != 0; ++i) {
91 if (total_size != (1 << i)) {
92 printf ("## WARNING: Total FLASH size (0x%08lx = %ld MB) is not a power of 2\n", total_size, total_size >> 20);
95 /* Remap FLASH according to real size */
97 ((((unsigned long) ~0) << i) & OR_AM_MSK) |
99 memctl->memc_br0 = CFG_BR0_PRELIM;
103 for (i = 0; i < CFG_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) {
104 /* Re-do sizing to get full correct info */
107 flash_get_size ((vu_long *) (CFG_FLASH_BASE +
111 /* This is done by flash_get_size - LP */
112 /* flash_get_offsets (CFG_FLASH_BASE + total_size, &flash_info[i]); */
114 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
115 /* monitor protection ON by default */
116 flash_protect (FLAG_PROTECT_SET,
118 CFG_MONITOR_BASE + monitor_flash_len - 1,
122 #ifdef CFG_ENV_IS_IN_FLASH
123 /* ENV protection ON by default */
124 flash_protect (FLAG_PROTECT_SET,
126 CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
130 total_size += size_b1;
136 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
137 flash_info[i].flash_id = FLASH_UNKNOWN;
138 flash_info[i].sector_count = -1;
139 flash_info[i].size = 0;
145 /*-----------------------------------------------------------------------
147 static void flash_get_offsets (ulong base, flash_info_t * info)
151 /* set up sector start address table */
152 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040
153 || (info->flash_id & FLASH_TYPEMASK) == FLASH_AM080) {
154 /* set sector offsets for uniform sector type */
155 for (i = 0; i < info->sector_count; i++) {
156 info->start[i] = base + (i * 0x00040000);
161 /*-----------------------------------------------------------------------
163 void flash_print_info (flash_info_t * info)
167 if (info->flash_id == FLASH_UNKNOWN) {
168 printf ("missing or unknown FLASH type\n");
172 switch (info->flash_id & FLASH_VENDMASK) {
180 printf ("BRIGHT MICRO ");
183 printf ("Unknown Vendor ");
187 switch (info->flash_id & FLASH_TYPEMASK) {
189 printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
192 printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\n");
195 printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
198 printf ("AM29LV400T (4 Mbit, top boot sector)\n");
201 printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
204 printf ("AM29LV800T (8 Mbit, top boot sector)\n");
207 printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
210 printf ("AM29LV160T (16 Mbit, top boot sector)\n");
213 printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
216 printf ("AM29LV320T (32 Mbit, top boot sector)\n");
219 printf ("Unknown Chip Type\n");
223 printf (" Size: %ld MB in %d Sectors\n", info->size >> 20,
226 printf (" Sector Start Addresses:");
228 for (i = 0; i < info->sector_count; ++i) {
234 info->start[i], info->protect[i] ? " (RO)" : " ");
241 /*-----------------------------------------------------------------------
245 /*-----------------------------------------------------------------------
249 * The following code cannot be run from FLASH!
252 static ulong flash_get_size (vu_long * addr, flash_info_t * info)
257 ulong base = (ulong) addr;
261 /* Write auto select command: read Manufacturer ID */
263 addr[0x0555] = 0x00AA00AA;
264 addr[0x02AA] = 0x00550055;
265 addr[0x0555] = 0x00900090;
267 addr[0x0555] = 0xAAAAAAAA;
268 addr[0x02AA] = 0x55555555;
269 addr[0x0555] = 0x90909090;
274 switch (value + (value << 16)) {
276 info->flash_id = FLASH_MAN_AMD;
280 info->flash_id = FLASH_MAN_FUJ;
284 info->flash_id = FLASH_UNKNOWN;
285 info->sector_count = 0;
290 value = addr[1]; /* device ID */
294 info->flash_id += FLASH_AM040;
295 info->sector_count = 8;
296 info->size = 0x00200000;
300 info->flash_id += FLASH_AM080;
301 info->sector_count = 16;
302 info->size = 0x00400000;
306 info->flash_id += FLASH_AM400T;
307 info->sector_count = 11;
308 info->size = 0x00100000;
312 info->flash_id += FLASH_AM400B;
313 info->sector_count = 11;
314 info->size = 0x00100000;
318 info->flash_id += FLASH_AM800T;
319 info->sector_count = 19;
320 info->size = 0x00200000;
324 info->flash_id += FLASH_AM800B;
325 info->sector_count = 19;
326 info->size = 0x00200000;
330 info->flash_id += FLASH_AM160T;
331 info->sector_count = 35;
332 info->size = 0x00400000;
336 info->flash_id += FLASH_AM160B;
337 info->sector_count = 35;
338 info->size = 0x00400000;
340 #if 0 /* enable when device IDs are available */
342 info->flash_id += FLASH_AM320T;
343 info->sector_count = 67;
344 info->size = 0x00800000;
348 info->flash_id += FLASH_AM320B;
349 info->sector_count = 67;
350 info->size = 0x00800000;
354 info->flash_id = FLASH_UNKNOWN;
355 return (0); /* => no or unknown flash */
360 /* set up sector start address table */
361 if (info->flash_id & FLASH_BTYPE) {
362 /* set sector offsets for bottom boot block type */
363 info->start[0] = base + 0x00000000;
364 info->start[1] = base + 0x00008000;
365 info->start[2] = base + 0x0000C000;
366 info->start[3] = base + 0x00010000;
367 for (i = 4; i < info->sector_count; i++) {
368 info->start[i] = base + (i * 0x00020000) - 0x00060000;
371 /* set sector offsets for top boot block type */
372 i = info->sector_count - 1;
373 info->start[i--] = base + info->size - 0x00008000;
374 info->start[i--] = base + info->size - 0x0000C000;
375 info->start[i--] = base + info->size - 0x00010000;
376 for (; i >= 0; i--) {
377 info->start[i] = base + i * 0x00020000;
381 flash_get_offsets ((ulong) addr, info);
384 /* check for protected sectors */
385 for (i = 0; i < info->sector_count; i++) {
386 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
387 /* D0 = 1 if protected */
388 addr = (volatile unsigned long *) (info->start[i]);
389 info->protect[i] = addr[2] & 1;
393 * Prevent writes to uninitialized FLASH.
395 if (info->flash_id != FLASH_UNKNOWN) {
396 addr = (volatile unsigned long *) info->start[0];
398 *addr = 0x00F000F0; /* reset bank */
400 *addr = 0xF0F0F0F0; /* reset bank */
408 /*-----------------------------------------------------------------------
411 int flash_erase (flash_info_t * info, int s_first, int s_last)
413 vu_long *addr = (vu_long *) (info->start[0]);
414 int flag, prot, sect, l_sect;
415 ulong start, now, last;
417 if ((s_first < 0) || (s_first > s_last)) {
418 if (info->flash_id == FLASH_UNKNOWN) {
419 printf ("- missing\n");
421 printf ("- no sectors to erase\n");
426 if ((info->flash_id == FLASH_UNKNOWN) ||
427 (info->flash_id > FLASH_AMD_COMP)) {
428 printf ("Can't erase unknown flash type - aborted\n");
433 for (sect = s_first; sect <= s_last; ++sect) {
434 if (info->protect[sect]) {
440 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
447 /* Disable interrupts which might cause a timeout here */
448 flag = disable_interrupts ();
451 addr[0x0555] = 0x00AA00AA;
452 addr[0x02AA] = 0x00550055;
453 addr[0x0555] = 0x00800080;
454 addr[0x0555] = 0x00AA00AA;
455 addr[0x02AA] = 0x00550055;
457 addr[0x0555] = 0xAAAAAAAA;
458 addr[0x02AA] = 0x55555555;
459 addr[0x0555] = 0x80808080;
460 addr[0x0555] = 0xAAAAAAAA;
461 addr[0x02AA] = 0x55555555;
464 /* Start erase on unprotected sectors */
465 for (sect = s_first; sect <= s_last; sect++) {
466 if (info->protect[sect] == 0) { /* not protected */
467 addr = (vu_long *) (info->start[sect]);
469 addr[0] = 0x00300030;
471 addr[0] = 0x30303030;
477 /* re-enable interrupts if necessary */
479 enable_interrupts ();
481 /* wait at least 80us - let's wait 1 ms */
485 * We wait for the last triggered sector
490 start = get_timer (0);
492 addr = (vu_long *) (info->start[l_sect]);
494 while ((addr[0] & 0x00800080) != 0x00800080)
496 while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
499 if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
500 printf ("Timeout\n");
503 /* show that we're waiting */
504 if ((now - last) > 1000) { /* every second */
511 /* reset to read mode */
512 addr = (volatile unsigned long *) info->start[0];
514 addr[0] = 0x00F000F0; /* reset bank */
516 addr[0] = 0xF0F0F0F0; /* reset bank */
523 /*-----------------------------------------------------------------------
524 * Copy memory to flash, returns:
527 * 2 - Flash not erased
530 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
535 wp = (addr & ~3); /* get lower word aligned address */
538 * handle unaligned start bytes
540 if ((l = addr - wp) != 0) {
542 for (i = 0, cp = wp; i < l; ++i, ++cp) {
543 data = (data << 8) | (*(uchar *) cp);
545 for (; i < 4 && cnt > 0; ++i) {
546 data = (data << 8) | *src++;
550 for (; cnt == 0 && i < 4; ++i, ++cp) {
551 data = (data << 8) | (*(uchar *) cp);
554 if ((rc = write_word (info, wp, data)) != 0) {
561 * handle word aligned part
565 for (i = 0; i < 4; ++i) {
566 data = (data << 8) | *src++;
568 if ((rc = write_word (info, wp, data)) != 0) {
580 * handle unaligned tail bytes
583 for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
584 data = (data << 8) | *src++;
587 for (; i < 4; ++i, ++cp) {
588 data = (data << 8) | (*(uchar *) cp);
591 return (write_word (info, wp, data));
594 /*-----------------------------------------------------------------------
595 * Write a word to Flash, returns:
598 * 2 - Flash not erased
600 static int write_word (flash_info_t * info, ulong dest, ulong data)
602 vu_long *addr = (vu_long *) (info->start[0]);
606 /* Check if Flash is (sufficiently) erased */
607 if ((*((vu_long *) dest) & data) != data) {
610 /* Disable interrupts which might cause a timeout here */
611 flag = disable_interrupts ();
614 addr[0x0555] = 0x00AA00AA;
615 addr[0x02AA] = 0x00550055;
616 addr[0x0555] = 0x00A000A0;
618 addr[0x0555] = 0xAAAAAAAA;
619 addr[0x02AA] = 0x55555555;
620 addr[0x0555] = 0xA0A0A0A0;
623 *((vu_long *) dest) = data;
625 /* re-enable interrupts if necessary */
627 enable_interrupts ();
629 /* data polling for D7 */
630 start = get_timer (0);
632 while ((*((vu_long *) dest) & 0x00800080) != (data & 0x00800080))
634 while ((*((vu_long *) dest) & 0x80808080) != (data & 0x80808080))
637 if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
644 /*-----------------------------------------------------------------------