6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/ppc4xx.h>
13 #include <asm/u-boot.h>
14 #include <asm/processor.h>
16 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
19 #define FLASH_WORD_SIZE unsigned long
20 #define FLASH_ID_MASK 0xFFFFFFFF
22 /*-----------------------------------------------------------------------
25 /* stolen from esteem192e/flash.c */
26 ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info);
28 static int write_word (flash_info_t *info, ulong dest, ulong data);
29 static void flash_get_offsets (ulong base, flash_info_t *info);
32 /*-----------------------------------------------------------------------
35 unsigned long flash_init (void)
37 unsigned long size_b0, size_b1;
40 unsigned long base_b0, base_b1;
41 volatile FLASH_WORD_SIZE* flash_base;
43 /* Init: no FLASHes known */
44 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
45 flash_info[i].flash_id = FLASH_UNKNOWN;
48 /* Static FLASH Bank configuration here */
49 /* Test for 8M Flash first */
50 debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_8M_PRELIM);
51 flash_base = (volatile FLASH_WORD_SIZE*)(FLASH_BASE0_8M_PRELIM);
52 size_b0 = flash_get_size(flash_base, &flash_info[0]);
54 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
55 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
56 size_b0, size_b0<<20);
60 if (size_b0 < 8*1024*1024) {
61 /* Not quite 8M, try 4M Flash base address */
62 debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_4M_PRELIM);
63 flash_base = (volatile FLASH_WORD_SIZE*)(FLASH_BASE0_4M_PRELIM);
64 size_b0 = flash_get_size(flash_base, &flash_info[0]);
67 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
68 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
69 size_b0, size_b0<<20);
74 if (CONFIG_SYS_MAX_FLASH_BANKS == 1) {
76 flash_get_offsets ((ulong)flash_base, &flash_info[0]);
78 /* Monitor protection ON by default */
79 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
80 CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_MONITOR_LEN-1, &flash_info[0]);
82 flash_info[0].size = size_b0;
87 size_b1 = flash_get_size(flash_base, &flash_info[1]);
89 /* Re-do sizing to get full correct info */
91 mtdcr(EBC0_CFGADDR, PB0CR);
92 pbcr = mfdcr(EBC0_CFGDATA);
93 mtdcr(EBC0_CFGADDR, PB0CR);
95 pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
96 mtdcr(EBC0_CFGDATA, pbcr);
100 mtdcr(EBC0_CFGADDR, PB1CR);
101 pbcr = mfdcr(EBC0_CFGDATA);
102 mtdcr(EBC0_CFGADDR, PB1CR);
103 base_b0 = base_b1 - size_b0;
104 pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
105 mtdcr(EBC0_CFGDATA, pbcr);
108 size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b0, &flash_info[0]);
109 flash_get_offsets (base_b0, &flash_info[0]);
111 /* monitor protection ON by default */
112 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
113 CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_MONITOR_LEN-1, &flash_info[0]);
116 /* Re-do sizing to get full correct info */
117 size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b1, &flash_info[1]);
118 flash_get_offsets (base_b1, &flash_info[1]);
120 /* monitor protection ON by default */
121 (void)flash_protect(FLAG_PROTECT_SET, base_b1+size_b1-CONFIG_SYS_MONITOR_LEN,
122 base_b1+size_b1-1, &flash_info[1]);
124 /* monitor protection OFF by default (one is enough) */
125 (void)flash_protect(FLAG_PROTECT_CLEAR, base_b0+size_b0-CONFIG_SYS_MONITOR_LEN,
126 base_b0+size_b0-1, &flash_info[0]);
128 flash_info[1].flash_id = FLASH_UNKNOWN;
129 flash_info[1].sector_count = -1;
132 flash_info[0].size = size_b0;
133 flash_info[1].size = size_b1;
134 return (size_b0 + size_b1);
138 /*-----------------------------------------------------------------------
139 This code is specific to the AM29DL163/AM29DL232 for the QS850/QS823.
142 static void flash_get_offsets (ulong base, flash_info_t *info)
145 long large_sect_size;
146 long small_sect_size;
148 /* set up sector start adress table */
149 large_sect_size = info->size / (info->sector_count - 8 + 1);
150 small_sect_size = large_sect_size / 8;
152 if (info->flash_id & FLASH_BTYPE) {
154 /* set sector offsets for bottom boot block type */
155 for (i = 0; i < 7; i++) {
156 info->start[i] = base;
157 base += small_sect_size;
160 for (; i < info->sector_count; i++) {
161 info->start[i] = base;
162 base += large_sect_size;
167 /* set sector offsets for top boot block type */
168 for (i = 0; i < (info->sector_count - 8); i++) {
169 info->start[i] = base;
170 base += large_sect_size;
173 for (; i < info->sector_count; i++) {
174 info->start[i] = base;
175 base += small_sect_size;
180 /*-----------------------------------------------------------------------
183 void flash_print_info (flash_info_t *info)
187 uchar botboot[]=", bottom boot sect)\n";
188 uchar topboot[]=", top boot sector)\n";
190 if (info->flash_id == FLASH_UNKNOWN) {
191 printf ("missing or unknown FLASH type\n");
195 switch (info->flash_id & FLASH_VENDMASK) {
208 case FLASH_MAN_INTEL:
212 printf ("Unknown Vendor ");
216 if (info->flash_id & 0x0001 ) {
222 switch (info->flash_id & FLASH_TYPEMASK) {
224 printf ("AM29LV160B (16 Mbit%s",boottype);
227 printf ("AM29LV160T (16 Mbit%s",boottype);
230 printf ("AM29DL163T (16 Mbit%s",boottype);
233 printf ("AM29DL163B (16 Mbit%s",boottype);
236 printf ("AM29LV320B (32 Mbit%s",boottype);
239 printf ("AM29LV320T (32 Mbit%s",boottype);
242 printf ("AM29DL323T (32 Mbit%s",boottype);
245 printf ("AM29DL323B (32 Mbit%s",boottype);
248 printf ("AM29DL322T (32 Mbit%s",boottype);
251 printf ("Unknown Chip Type\n");
255 printf (" Size: %ld MB in %d Sectors\n",
256 info->size >> 20, info->sector_count);
258 printf (" Sector Start Addresses:");
259 for (i=0; i<info->sector_count; ++i) {
262 printf (" %08lX%s", info->start[i],
263 info->protect[i] ? " (RO)" : " ");
270 /*-----------------------------------------------------------------------
271 * The following code cannot be run from FLASH!
273 ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info)
276 ulong base = (ulong)addr;
277 FLASH_WORD_SIZE value;
279 /* Write auto select command: read Manufacturer ID */
282 * Note: if it is an AMD flash and the word at addr[0000]
283 * is 0x00890089 this routine will think it is an Intel
284 * flash device and may(most likely) cause trouble.
287 addr[0x0000] = 0x00900090;
288 if(addr[0x0000] != 0x00890089){
289 addr[0x0555] = 0x00AA00AA;
290 addr[0x02AA] = 0x00550055;
291 addr[0x0555] = 0x00900090;
296 case (AMD_MANUFACT & FLASH_ID_MASK):
297 info->flash_id = FLASH_MAN_AMD;
299 case (FUJ_MANUFACT & FLASH_ID_MASK):
300 info->flash_id = FLASH_MAN_FUJ;
302 case (STM_MANUFACT & FLASH_ID_MASK):
303 info->flash_id = FLASH_MAN_STM;
305 case (SST_MANUFACT & FLASH_ID_MASK):
306 info->flash_id = FLASH_MAN_SST;
308 case (INTEL_MANUFACT & FLASH_ID_MASK):
309 info->flash_id = FLASH_MAN_INTEL;
312 info->flash_id = FLASH_UNKNOWN;
313 info->sector_count = 0;
315 return (0); /* no or unknown flash */
318 value = addr[1]; /* device ID */
321 case (AMD_ID_LV160T & FLASH_ID_MASK):
322 info->flash_id += FLASH_AM160T;
323 info->sector_count = 35;
324 info->size = 0x00400000;
327 case (AMD_ID_LV160B & FLASH_ID_MASK):
328 info->flash_id += FLASH_AM160B;
329 info->sector_count = 35;
330 info->size = 0x00400000;
333 case (AMD_ID_DL163T & FLASH_ID_MASK):
334 info->flash_id += FLASH_AMDL163T;
335 info->sector_count = 39;
336 info->size = 0x00400000;
339 case (AMD_ID_DL163B & FLASH_ID_MASK):
340 info->flash_id += FLASH_AMDL163B;
341 info->sector_count = 39;
342 info->size = 0x00400000;
345 case (AMD_ID_DL323T & FLASH_ID_MASK):
346 info->flash_id += FLASH_AMDL323T;
347 info->sector_count = 71;
348 info->size = 0x00800000;
351 case (AMD_ID_DL323B & FLASH_ID_MASK):
352 info->flash_id += FLASH_AMDL323B;
353 info->sector_count = 71;
354 info->size = 0x00800000;
357 case (AMD_ID_DL322T & FLASH_ID_MASK):
358 info->flash_id += FLASH_AMDL322T;
359 info->sector_count = 71;
360 info->size = 0x00800000;
365 info->flash_id = FLASH_UNKNOWN;
366 return (0); /* => no or unknown flash */
369 flash_get_offsets(base, info);
371 /* check for protected sectors */
372 for (i = 0; i < info->sector_count; i++) {
373 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
374 /* D0 = 1 if protected */
375 addr = (volatile FLASH_WORD_SIZE *)(info->start[i]);
376 info->protect[i] = addr[2] & 1;
380 * Prevent writes to uninitialized FLASH.
382 if (info->flash_id != FLASH_UNKNOWN) {
383 addr = (volatile FLASH_WORD_SIZE *)info->start[0];
384 *addr = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
391 /*-----------------------------------------------------------------------
394 int flash_erase (flash_info_t *info, int s_first, int s_last)
396 volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]);
397 int flag, prot, sect, l_sect;
398 ulong start, now, last;
401 if ((s_first < 0) || (s_first > s_last)) {
402 if (info->flash_id == FLASH_UNKNOWN) {
403 printf ("- missing\n");
405 printf ("- no sectors to erase\n");
410 if ((info->flash_id == FLASH_UNKNOWN) ||
411 (info->flash_id > FLASH_AMD_COMP) ) {
412 printf ("Can't erase unknown flash type - aborted\n");
417 for (sect=s_first; sect<=s_last; ++sect) {
418 if (info->protect[sect]) {
424 printf ("- Warning: %d protected sectors will not be erased!\n",
432 /* Disable interrupts which might cause a timeout here */
433 flag = disable_interrupts();
434 addr[0x0555] = 0x00AA00AA;
435 addr[0x02AA] = 0x00550055;
436 addr[0x0555] = 0x00800080;
437 addr[0x0555] = 0x00AA00AA;
438 addr[0x02AA] = 0x00550055;
439 /* Start erase on unprotected sectors */
440 for (sect = s_first; sect<=s_last; sect++) {
441 if (info->protect[sect] == 0) { /* not protected */
442 addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]);
443 addr[0] = (0x00300030 & FLASH_ID_MASK);
448 /* re-enable interrupts if necessary */
452 /* wait at least 80us - let's wait 1 ms */
456 * We wait for the last triggered sector
461 start = get_timer (0);
463 addr = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]);
464 while ((addr[0] & (0x00800080&FLASH_ID_MASK)) !=
465 (0x00800080&FLASH_ID_MASK) )
467 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
468 printf ("Timeout\n");
471 /* show that we're waiting */
472 if ((now - last) > 1000) { /* every second */
479 /* reset to read mode */
480 addr = (volatile FLASH_WORD_SIZE *)info->start[0];
481 addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
487 /*-----------------------------------------------------------------------
488 * Copy memory to flash, returns:
491 * 2 - Flash not erased
494 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
500 wp = (addr & ~3); /* get lower word aligned address */
503 * handle unaligned start bytes
505 if ((l = addr - wp) != 0) {
507 for (i=0, cp=wp; i<l; ++i, ++cp) {
508 data = (data << 8) | (*(uchar *)cp);
510 for (; i<4 && cnt>0; ++i) {
511 data = (data << 8) | *src++;
515 for (; cnt==0 && i<4; ++i, ++cp) {
516 data = (data << 8) | (*(uchar *)cp);
519 if ((rc = write_word(info, wp, data)) != 0) {
526 * handle word aligned part
530 for (i=0; i<4; ++i) {
531 data = (data << 8) | *src++;
533 if ((rc = write_word(info, wp, data)) != 0) {
545 * handle unaligned tail bytes
548 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
549 data = (data << 8) | *src++;
552 for (; i<4; ++i, ++cp) {
553 data = (data << 8) | (*(uchar *)cp);
556 return (write_word(info, wp, data));
559 /*-----------------------------------------------------------------------
560 * Write a word to Flash, returns:
563 * 2 - Flash not erased
565 static int write_word (flash_info_t *info, ulong dest, ulong data)
567 vu_long *addr = (vu_long*)(info->start[0]);
571 /* Check if Flash is (sufficiently) erased */
572 if ((*((vu_long *)dest) & data) != data) {
576 /* Disable interrupts which might cause a timeout here */
577 flag = disable_interrupts();
580 addr[0x0555] = 0x00AA00AA;
581 addr[0x02AA] = 0x00550055;
582 addr[0x0555] = 0x00A000A0;
584 *((vu_long *)dest) = data;
586 /* re-enable interrupts if necessary */
590 /* data polling for D7 */
591 start = get_timer(0);
593 while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
594 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {