3
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5
* SPDX-License-Identifier: GPL-2.0+
9
* Yoo. Jonghoon, IPone, yooth@ipone.co.kr
10
* U-Boot port on RPXlite board
12
* Some of flash control words are modified. (from 2x16bit device
14
* RPXLite board I tested has only 4 AM29LV800BB devices. Other devices
17
* (?) Does an RPXLite board which
18
* does not use AM29LV800 flash memory exist ?
25
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
27
/*-----------------------------------------------------------------------
30
static ulong flash_get_size ( short manu, short dev_id, flash_info_t *info);
31
static int write_word (flash_info_t *info, ulong dest, ulong data);
32
static void flash_get_offsets (ulong base, flash_info_t *info, int two_chips);
33
static void flash_get_id_word( void *ptr, short *ptr_manuf, short *ptr_dev_id);
34
static void flash_get_id_long( void *ptr, short *ptr_manuf, short *ptr_dev_id);
36
/*-----------------------------------------------------------------------
39
unsigned long flash_init (void)
41
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
42
volatile memctl8xx_t *memctl = &immap->im_memctl;
43
unsigned long size_b0, size_b1;
47
/* Init: no FLASHes known */
48
for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
49
flash_info[i].flash_id = FLASH_UNKNOWN;
52
/* Do sizing to get full correct info */
54
flash_get_id_word((void*)CONFIG_SYS_FLASH_BASE0,&manu,&dev_id);
56
size_b0 = flash_get_size(manu, dev_id, &flash_info[0]);
58
flash_get_offsets (CONFIG_SYS_FLASH_BASE0, &flash_info[0],0);
60
memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (0 - size_b0);
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#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE0
63
/* monitor protection ON by default */
64
flash_protect(FLAG_PROTECT_SET,
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CONFIG_SYS_MONITOR_BASE,
66
CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
70
flash_get_id_long((void*)CONFIG_SYS_FLASH_BASE1,&manu,&dev_id);
72
size_b1 = 2 * flash_get_size(manu, dev_id, &flash_info[1]);
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flash_get_offsets(CONFIG_SYS_FLASH_BASE1, &flash_info[1],1);
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memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH | (0 - size_b1);
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flash_info[0].size = size_b0;
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flash_info[1].size = size_b1;
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return (size_b0+size_b1);
84
/*-----------------------------------------------------------------------
86
static void flash_get_offsets (ulong base, flash_info_t *info, int two_chips)
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vu_short *addr = (vu_short*)base;
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addr[0x555] = 0x00AA ;
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addr[0xAAA] = 0x0055 ;
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addr[0x555] = 0x0090 ;
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addr_shift = (two_chips ? 2 : 1 );
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/* set up sector start address table */
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + (0x00000000<<addr_shift);
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info->start[1] = base + (0x00002000<<addr_shift);
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info->start[2] = base + (0x00003000<<addr_shift);
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info->start[3] = base + (0x00004000<<addr_shift);
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + ((i-3) * (0x00008000<<addr_shift)) ;
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - (0x00002000<<addr_shift);
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info->start[i--] = base + info->size - (0x00003000<<addr_shift);
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info->start[i--] = base + info->size - (0x00004000<<addr_shift);
113
for (; i >= 0; i--) {
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info->start[i] = base + i * (0x00008000<<addr_shift);
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/* check for protected sectors */
119
for (i = 0; i < info->sector_count; i++) {
120
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
121
/* D0 = 1 if protected */
122
addr = (vu_short *)(info->start[i]);
123
info->protect[i] = addr[1<<addr_shift] & 1 ;
126
addr = (vu_short *)info->start[0];
127
*addr = 0xF0F0; /* reset bank */
130
/*-----------------------------------------------------------------------
132
void flash_print_info (flash_info_t *info)
136
if (info->flash_id == FLASH_UNKNOWN) {
137
printf ("missing or unknown FLASH type\n");
141
switch (info->flash_id & FLASH_VENDMASK) {
142
case FLASH_MAN_AMD: printf ("AMD "); break;
143
case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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case FLASH_MAN_TOSH: printf ("TOSHIBA "); break;
145
default: printf ("Unknown Vendor "); break;
148
switch (info->flash_id & FLASH_TYPEMASK) {
149
case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
151
case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
153
case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
155
case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
157
case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
159
case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
161
case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
163
case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
165
default: printf ("Unknown Chip Type\n");
169
printf (" Size: %ld MB in %d Sectors\n",
170
info->size >> 20, info->sector_count);
172
printf (" Sector Start Addresses:");
173
for (i=0; i<info->sector_count; ++i) {
178
info->protect[i] ? " (RO)" : " "
184
/*-----------------------------------------------------------------------
188
/*-----------------------------------------------------------------------
192
* The following code cannot be run from FLASH!
195
static void flash_get_id_word( void *ptr, short *ptr_manuf, short *ptr_dev_id)
197
vu_short *addr = (vu_short*)ptr;
199
addr[0x555] = 0x00AA ;
200
addr[0xAAA] = 0x0055 ;
201
addr[0x555] = 0x0090 ;
203
*ptr_manuf = addr[0];
204
*ptr_dev_id = addr[1];
206
addr[0] = 0xf0f0; /* return to normal */
209
static void flash_get_id_long( void *ptr, short *ptr_manuf, short *ptr_dev_id)
211
vu_short *addr = (vu_short*)ptr;
212
vu_short *addr1, *addr2, *addr3;
214
addr1 = (vu_short*) ( ((int)ptr) + (0x5555<<2) );
215
addr2 = (vu_short*) ( ((int)ptr) + (0x2AAA<<2) );
216
addr3 = (vu_short*) ( ((int)ptr) + (0x5555<<2) );
222
*ptr_manuf = addr[0];
223
*ptr_dev_id = addr[2];
225
addr[0] = 0xf0f0; /* return to normal */
228
static ulong flash_get_size ( short manu, short dev_id, flash_info_t *info)
231
case ((short)AMD_MANUFACT):
232
info->flash_id = FLASH_MAN_AMD;
234
case ((short)FUJ_MANUFACT):
235
info->flash_id = FLASH_MAN_FUJ;
237
case ((short)TOSH_MANUFACT):
238
info->flash_id = FLASH_MAN_TOSH;
241
info->flash_id = FLASH_UNKNOWN;
242
info->sector_count = 0;
244
return (0); /* no or unknown flash */
249
case ((short)TOSH_ID_FVT160):
250
info->flash_id += FLASH_AM160T;
251
info->sector_count = 35;
252
info->size = 0x00200000;
255
case ((short)TOSH_ID_FVB160):
256
info->flash_id += FLASH_AM160B;
257
info->sector_count = 35;
258
info->size = 0x00200000;
261
case ((short)AMD_ID_LV400T):
262
info->flash_id += FLASH_AM400T;
263
info->sector_count = 11;
264
info->size = 0x00100000;
267
case ((short)AMD_ID_LV400B):
268
info->flash_id += FLASH_AM400B;
269
info->sector_count = 11;
270
info->size = 0x00100000;
273
case ((short)AMD_ID_LV800T):
274
info->flash_id += FLASH_AM800T;
275
info->sector_count = 19;
276
info->size = 0x00200000;
279
case ((short)AMD_ID_LV800B):
280
info->flash_id += FLASH_AM800B;
281
info->sector_count = 19;
282
info->size = 0x00400000; /*%%% Size doubled by yooth */
285
case ((short)AMD_ID_LV160T):
286
info->flash_id += FLASH_AM160T;
287
info->sector_count = 35;
288
info->size = 0x00200000;
291
case ((short)AMD_ID_LV160B):
292
info->flash_id += FLASH_AM160B;
293
info->sector_count = 35;
294
info->size = 0x00200000;
297
info->flash_id = FLASH_UNKNOWN;
298
return (0); /* => no or unknown flash */
306
/*-----------------------------------------------------------------------
309
int flash_erase (flash_info_t *info, int s_first, int s_last)
311
vu_short *addr = (vu_short*)(info->start[0]);
312
int flag, prot, sect, l_sect;
313
ulong start, now, last;
315
if ((s_first < 0) || (s_first > s_last)) {
316
if (info->flash_id == FLASH_UNKNOWN) {
317
printf ("- missing\n");
319
printf ("- no sectors to erase\n");
324
if ((info->flash_id == FLASH_UNKNOWN) ||
325
(info->flash_id > FLASH_AMD_COMP)) {
326
printf ("Can't erase unknown flash type %08lx - aborted\n",
332
for (sect=s_first; sect<=s_last; ++sect) {
333
if (info->protect[sect]) {
339
printf ("- Warning: %d protected sectors will not be erased!\n",
347
/* Disable interrupts which might cause a timeout here */
348
flag = disable_interrupts();
350
addr[0x555] = (vu_short)0xAAAAAAAA;
351
addr[0xAAA] = (vu_short)0x55555555;
352
addr[0x555] = (vu_short)0x80808080;
353
addr[0x555] = (vu_short)0xAAAAAAAA;
354
addr[0xAAA] = (vu_short)0x55555555;
356
/* Start erase on unprotected sectors */
357
for (sect = s_first; sect<=s_last; sect++) {
358
if (info->protect[sect] == 0) { /* not protected */
359
addr = (vu_short *)(info->start[sect]) ;
360
addr[0] = (vu_short)0x30303030 ;
365
/* re-enable interrupts if necessary */
369
/* wait at least 80us - let's wait 1 ms */
373
* We wait for the last triggered sector
378
start = get_timer (0);
380
addr = (vu_short *)(info->start[l_sect]);
381
while ((addr[0] & 0x8080) != 0x8080) {
382
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
383
printf ("Timeout\n");
386
/* show that we're waiting */
387
if ((now - last) > 1000) { /* every second */
394
/* reset to read mode */
395
addr = (vu_short *)info->start[0];
396
addr[0] = (vu_short)0xF0F0F0F0; /* reset bank */
402
/*-----------------------------------------------------------------------
403
* Copy memory to flash, returns:
406
* 2 - Flash not erased
409
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
414
wp = (addr & ~3); /* get lower word aligned address */
417
* handle unaligned start bytes
419
if ((l = addr - wp) != 0) {
421
for (i=0, cp=wp; i<l; ++i, ++cp) {
422
data = (data << 8) | (*(uchar *)cp);
424
for (; i<4 && cnt>0; ++i) {
425
data = (data << 8) | *src++;
429
for (; cnt==0 && i<4; ++i, ++cp) {
430
data = (data << 8) | (*(uchar *)cp);
433
if ((rc = write_word(info, wp, data)) != 0) {
440
* handle word aligned part
444
for (i=0; i<4; ++i) {
445
data = (data << 8) | *src++;
447
if ((rc = write_word(info, wp, data)) != 0) {
459
* handle unaligned tail bytes
462
for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
463
data = (data << 8) | *src++;
466
for (; i<4; ++i, ++cp) {
467
data = (data << 8) | (*(uchar *)cp);
470
return (write_word(info, wp, data));
473
/*-----------------------------------------------------------------------
474
* Write a word to Flash, returns:
477
* 2 - Flash not erased
479
static int write_word (flash_info_t *info, ulong dest, ulong data)
481
vu_short *addr = (vu_short *)(info->start[0]);
487
/* Check if Flash is (sufficiently) erased */
488
if ((*((vu_long *)dest) & data) != data) {
492
/* First write upper 16 bits */
493
sdata = (short)(data>>16);
495
/* Disable interrupts which might cause a timeout here */
496
flag = disable_interrupts();
498
addr[0x555] = 0xAAAA;
499
addr[0xAAA] = 0x5555;
500
addr[0x555] = 0xA0A0;
502
*((vu_short *)dest) = sdata;
504
/* re-enable interrupts if necessary */
508
/* data polling for D7 */
509
start = get_timer (0);
510
while ((*((vu_short *)dest) & 0x8080) != (sdata & 0x8080)) {
511
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
516
/* Now write lower 16 bits */
517
sdata = (short)(data&0xffff);
519
/* Disable interrupts which might cause a timeout here */
520
flag = disable_interrupts();
522
addr[0x555] = 0xAAAA;
523
addr[0xAAA] = 0x5555;
524
addr[0x555] = 0xA0A0;
526
*((vu_short *)dest + 1) = sdata;
528
/* re-enable interrupts if necessary */
532
/* data polling for D7 */
533
start = get_timer (0);
534
while ((*((vu_short *)dest + 1) & 0x8080) != (sdata & 0x8080)) {
535
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
542
/*-----------------------------------------------------------------------