3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
9 #include <asm/processor.h>
11 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
16 static int write_word(flash_info_t *info, ulong dest, ulong data);
18 void flash_print_info(flash_info_t *info)
24 volatile unsigned long *flash;
26 if (info->flash_id == FLASH_UNKNOWN) {
27 printf ("missing or unknown FLASH type\n");
31 switch (info->flash_id & FLASH_VENDMASK) {
32 case FLASH_MAN_AMD: printf ("AMD "); break;
33 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
34 case FLASH_MAN_SST: printf ("SST "); break;
35 case FLASH_MAN_STM: printf ("ST "); break;
36 case FLASH_MAN_EXCEL: printf ("Excel Semiconductor "); break;
37 default: printf ("Unknown Vendor "); break;
40 switch (info->flash_id & FLASH_TYPEMASK) {
41 case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
43 case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
45 case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
47 case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
49 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
51 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
53 case FLASH_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
55 case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
57 case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
59 case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
61 case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
63 case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
65 case FLASH_SST020: printf ("SST39LF/VF020 (2 Mbit, uniform sector size)\n");
67 case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
69 default: printf ("Unknown Chip Type\n");
73 printf (" Size: %ld MB in %d Sectors\n",
74 info->size >> 20, info->sector_count);
76 printf (" Sector Start Addresses:");
77 for (i=0; i<info->sector_count; ++i) {
78 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
80 * Check if whole sector is erased
82 if (i != (info->sector_count-1))
83 size = info->start[i+1] - info->start[i];
85 size = info->start[0] + info->size - info->start[i];
87 flash = (volatile unsigned long *)info->start[i];
88 size = size >> 2; /* divide by 4 for longword access */
89 for (k=0; k<size; k++) {
90 if (*flash++ != 0xffffffff) {
98 /* print empty and read-only info */
102 info->protect[i] ? "RO " : " ");
108 info->protect[i] ? " (RO)" : " ");
117 * The following code cannot be run from FLASH!
119 static ulong flash_get_size(vu_long *addr, flash_info_t *info)
123 CONFIG_SYS_FLASH_WORD_SIZE value;
124 ulong base = (ulong)addr;
125 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)addr;
127 /* Write auto select command: read Manufacturer ID */
128 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
129 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
130 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
132 value = addr2[CONFIG_SYS_FLASH_READ0];
135 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
136 info->flash_id = FLASH_MAN_AMD;
138 case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
139 info->flash_id = FLASH_MAN_FUJ;
141 case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
142 info->flash_id = FLASH_MAN_SST;
144 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_MANUFACT:
145 info->flash_id = FLASH_MAN_STM;
147 case (CONFIG_SYS_FLASH_WORD_SIZE)EXCEL_MANUFACT:
148 info->flash_id = FLASH_MAN_EXCEL;
151 info->flash_id = FLASH_UNKNOWN;
152 info->sector_count = 0;
154 return (0); /* no or unknown flash */
157 value = addr2[CONFIG_SYS_FLASH_READ1]; /* device ID */
160 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
161 info->flash_id += FLASH_AM400T;
162 info->sector_count = 11;
163 info->size = 0x00080000;
164 break; /* => 0.5 MB */
166 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
167 info->flash_id += FLASH_AM400B;
168 info->sector_count = 11;
169 info->size = 0x00080000;
170 break; /* => 0.5 MB */
172 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
173 info->flash_id += FLASH_AM800T;
174 info->sector_count = 19;
175 info->size = 0x00100000;
178 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
179 info->flash_id += FLASH_AM800B;
180 info->sector_count = 19;
181 info->size = 0x00100000;
184 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
185 info->flash_id += FLASH_AM160T;
186 info->sector_count = 35;
187 info->size = 0x00200000;
190 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
191 info->flash_id += FLASH_AM160B;
192 info->sector_count = 35;
193 info->size = 0x00200000;
196 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
197 info->flash_id += FLASH_AM320T;
198 info->sector_count = 71;
199 info->size = 0x00400000; break; /* => 4 MB */
201 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
202 info->flash_id += FLASH_AM320B;
203 info->sector_count = 71;
204 info->size = 0x00400000; break; /* => 4 MB */
206 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
207 info->flash_id += FLASH_AMDL322T;
208 info->sector_count = 71;
209 info->size = 0x00400000; break; /* => 4 MB */
211 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
212 info->flash_id += FLASH_AMDL322B;
213 info->sector_count = 71;
214 info->size = 0x00400000; break; /* => 4 MB */
216 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
217 info->flash_id += FLASH_AMDL323T;
218 info->sector_count = 71;
219 info->size = 0x00400000; break; /* => 4 MB */
221 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
222 info->flash_id += FLASH_AMDL323B;
223 info->sector_count = 71;
224 info->size = 0x00400000; break; /* => 4 MB */
226 case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF020:
227 info->flash_id += FLASH_SST020;
228 info->sector_count = 64;
229 info->size = 0x00040000;
230 break; /* => 256 kB */
232 case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF040:
233 info->flash_id += FLASH_SST040;
234 info->sector_count = 128;
235 info->size = 0x00080000;
236 break; /* => 512 kB */
239 info->flash_id = FLASH_UNKNOWN;
240 return (0); /* => no or unknown flash */
244 /* set up sector start address table */
245 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
246 for (i = 0; i < info->sector_count; i++)
247 info->start[i] = base + (i * 0x00001000);
248 } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
249 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
250 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
251 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
252 /* set sector offsets for bottom boot block type */
253 for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
254 info->start[i] = base;
257 while (i < info->sector_count) { /* 64k regular sectors */
258 info->start[i] = base;
262 } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
263 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
264 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
265 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
266 /* set sector offsets for top boot block type */
268 i = info->sector_count;
269 for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
272 info->start[i] = base;
274 while (i > 0) { /* 64k regular sectors */
277 info->start[i] = base;
280 if (info->flash_id & FLASH_BTYPE) {
281 /* set sector offsets for bottom boot block type */
282 info->start[0] = base + 0x00000000;
283 info->start[1] = base + 0x00004000;
284 info->start[2] = base + 0x00006000;
285 info->start[3] = base + 0x00008000;
286 for (i = 4; i < info->sector_count; i++) {
287 info->start[i] = base + (i * 0x00010000) - 0x00030000;
290 /* set sector offsets for top boot block type */
291 i = info->sector_count - 1;
292 info->start[i--] = base + info->size - 0x00004000;
293 info->start[i--] = base + info->size - 0x00006000;
294 info->start[i--] = base + info->size - 0x00008000;
295 for (; i >= 0; i--) {
296 info->start[i] = base + i * 0x00010000;
301 /* check for protected sectors */
302 for (i = 0; i < info->sector_count; i++) {
303 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
304 /* D0 = 1 if protected */
305 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
306 if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD)
307 info->protect[i] = 0;
309 info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
313 * Prevent writes to uninitialized FLASH.
315 if (info->flash_id != FLASH_UNKNOWN) {
316 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
317 *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
324 int flash_erase(flash_info_t *info, int s_first, int s_last)
326 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
327 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
328 int flag, prot, sect, l_sect;
329 ulong start, now, last;
331 if ((s_first < 0) || (s_first > s_last)) {
332 if (info->flash_id == FLASH_UNKNOWN)
333 printf ("- missing\n");
335 printf ("- no sectors to erase\n");
339 if (info->flash_id == FLASH_UNKNOWN) {
340 printf ("Can't erase unknown flash type - aborted\n");
345 for (sect=s_first; sect<=s_last; ++sect)
346 if (info->protect[sect])
350 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
356 /* Disable interrupts which might cause a timeout here */
357 flag = disable_interrupts();
359 /* Start erase on unprotected sectors */
360 for (sect = s_first; sect<=s_last; sect++) {
361 if (info->protect[sect] == 0) { /* not protected */
362 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
363 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
364 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
365 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
366 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
367 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
368 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
369 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
371 /* re-enable interrupts if necessary */
377 /* data polling for D7 */
378 start = get_timer (0);
379 while ((addr2[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
380 (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
381 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
385 if (sect == s_first) {
386 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
387 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
388 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
389 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
390 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
392 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
398 /* re-enable interrupts if necessary */
402 /* wait at least 80us - let's wait 1 ms */
406 * We wait for the last triggered sector
411 start = get_timer (0);
413 addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
414 while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
415 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
416 printf ("Timeout\n");
419 /* show that we're waiting */
420 if ((now - last) > 1000) { /* every second */
427 /* reset to read mode */
428 addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
429 addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
436 * Copy memory to flash, returns:
439 * 2 - Flash not erased
441 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
446 wp = (addr & ~3); /* get lower word aligned address */
449 * handle unaligned start bytes
451 if ((l = addr - wp) != 0) {
453 for (i=0, cp=wp; i<l; ++i, ++cp) {
454 data = (data << 8) | (*(uchar *)cp);
456 for (; i<4 && cnt>0; ++i) {
457 data = (data << 8) | *src++;
461 for (; cnt==0 && i<4; ++i, ++cp) {
462 data = (data << 8) | (*(uchar *)cp);
465 if ((rc = write_word(info, wp, data)) != 0) {
472 * handle word aligned part
477 data = (data << 8) | *src++;
478 if ((rc = write_word(info, wp, data)) != 0)
488 * handle unaligned tail bytes
491 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
492 data = (data << 8) | *src++;
495 for (; i<4; ++i, ++cp)
496 data = (data << 8) | (*(uchar *)cp);
498 return (write_word(info, wp, data));
502 * Write a word to Flash, returns:
505 * 2 - Flash not erased
507 static int write_word(flash_info_t *info, ulong dest, ulong data)
509 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
510 volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
511 volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)&data;
516 /* Check if Flash is (sufficiently) erased */
517 if ((*((vu_long *)dest) & data) != data)
520 /* Disable interrupts which might cause a timeout here */
521 flag = disable_interrupts();
523 for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
524 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
525 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
526 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
530 /* re-enable interrupts if necessary */
534 /* data polling for D7 */
535 start = get_timer (0);
536 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
537 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
538 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)