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 #if defined(CFG_ENV_IS_IN_FLASH)
29 # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
32 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
34 # ifndef CFG_ENV_SECT_SIZE
35 # define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
39 /*---------------------------------------------------------------------*/
43 #define DEBUGF(fmt,args...) printf(fmt ,##args)
45 #define DEBUGF(fmt,args...)
47 /*---------------------------------------------------------------------*/
49 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
51 /*-----------------------------------------------------------------------
54 static ulong flash_get_size (vu_char *addr, flash_info_t *info);
55 static int write_data (flash_info_t *info, uchar *dest, uchar data);
56 static void flash_get_offsets (ulong base, flash_info_t *info);
61 * don't ask. its stupid, but more than one soul has had to live with this mistake
62 * "swaptab[i]" is the value of "i" with the bits reversed.
65 #define MUSENKI_BROKEN_FLASH 1
67 #ifdef MUSENKI_BROKEN_FLASH
68 unsigned char swaptab[256] = {
69 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
70 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
71 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
72 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
73 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
74 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
75 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
76 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
77 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
78 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
79 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
80 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
81 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
82 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
83 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
84 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
85 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
86 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
87 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
88 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
89 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
90 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
91 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
92 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
93 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
94 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
95 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
96 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
97 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
98 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
99 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
100 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
103 #define BS(b) (swaptab[b])
111 #define BYTEME(x) ((x) & 0xFF)
113 /*-----------------------------------------------------------------------
116 unsigned long flash_init (void)
118 unsigned long size_b0, size_b1;
121 /* Init: no FLASHes known */
122 for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
123 flash_info[i].flash_id = FLASH_UNKNOWN;
126 /* Static FLASH Bank configuration here - FIXME XXX */
128 DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",CFG_FLASH_BASE0_PRELIM);
130 size_b0 = flash_get_size((vu_char *)CFG_FLASH_BASE0_PRELIM, &flash_info[0]);
132 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
133 printf ("## Unknown FLASH on Bank 0: "
134 "ID 0x%lx, Size = 0x%08lx = %ld MB\n",
135 flash_info[0].flash_id,
136 size_b0, size_b0<<20);
139 DEBUGF("## Get flash bank 2 size @ 0x%08x\n",CFG_FLASH_BASE1_PRELIM);
140 size_b1 = flash_get_size((vu_char *)CFG_FLASH_BASE1_PRELIM, &flash_info[1]);
142 DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
144 flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
146 flash_info[0].size = size_b0;
148 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
149 DEBUGF("protect monitor %x @ %x\n", CFG_MONITOR_BASE, CFG_MONITOR_LEN);
150 /* monitor protection ON by default */
151 flash_protect(FLAG_PROTECT_SET,
153 CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
157 #ifdef CFG_ENV_IS_IN_FLASH
158 /* ENV protection ON by default */
159 DEBUGF("protect environtment %x @ %x\n", CFG_ENV_ADDR, CFG_ENV_SECT_SIZE);
160 flash_protect(FLAG_PROTECT_SET,
162 CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
167 flash_info[1].size = size_b1;
168 flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);
170 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
171 /* monitor protection ON by default */
172 flash_protect(FLAG_PROTECT_SET,
174 CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
178 #ifdef CFG_ENV_IS_IN_FLASH
179 /* ENV protection ON by default */
180 flash_protect(FLAG_PROTECT_SET,
182 CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
186 flash_info[1].flash_id = FLASH_UNKNOWN;
187 flash_info[1].sector_count = -1;
188 flash_info[1].size = 0;
191 DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
193 return (size_b0 + size_b1);
196 /*-----------------------------------------------------------------------
198 static void flash_get_offsets (ulong base, flash_info_t *info)
202 if (info->flash_id == FLASH_UNKNOWN) {
206 switch (info->flash_id & FLASH_VENDMASK) {
207 case FLASH_MAN_INTEL:
208 for (i = 0; i < info->sector_count; i++) {
209 info->start[i] = base;
210 base += 0x00020000; /* 128k per bank */
215 printf ("Don't know sector ofsets for flash type 0x%lx\n", info->flash_id);
220 /*-----------------------------------------------------------------------
222 void flash_print_info (flash_info_t *info)
226 if (info->flash_id == FLASH_UNKNOWN) {
227 printf ("missing or unknown FLASH type\n");
231 switch (info->flash_id & FLASH_VENDMASK) {
232 case FLASH_MAN_AMD: printf ("AMD "); break;
233 case FLASH_MAN_FUJ: printf ("Fujitsu "); break;
234 case FLASH_MAN_SST: printf ("SST "); break;
235 case FLASH_MAN_STM: printf ("STM "); break;
236 case FLASH_MAN_INTEL: printf ("Intel "); break;
237 case FLASH_MAN_MT: printf ("MT "); break;
238 default: printf ("Unknown Vendor "); break;
241 switch (info->flash_id & FLASH_TYPEMASK) {
242 case FLASH_28F320J3A: printf ("28F320J3A (32Mbit = 128K x 32)\n");
244 case FLASH_28F640J3A: printf ("28F640J3A (64Mbit = 128K x 64)\n");
246 case FLASH_28F128J3A: printf ("28F128J3A (128Mbit = 128K x 128)\n");
248 default: printf ("Unknown Chip Type\n");
252 if (info->size >= (1 << 20)) {
257 printf (" Size: %ld %cB in %d Sectors\n",
259 (i == 20) ? 'M' : 'k',
262 printf (" Sector Start Addresses:");
263 for (i=0; i<info->sector_count; ++i) {
268 info->protect[i] ? " (RO)" : " "
275 /*-----------------------------------------------------------------------
279 /*-----------------------------------------------------------------------
283 * The following code cannot be run from FLASH!
285 static ulong flash_get_size (vu_char *addr, flash_info_t *info)
287 vu_char manuf, device;
291 DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (vu_char *)addr, manuf);
294 case BYTEME(AMD_MANUFACT):
295 info->flash_id = FLASH_MAN_AMD;
297 case BYTEME(FUJ_MANUFACT):
298 info->flash_id = FLASH_MAN_FUJ;
300 case BYTEME(SST_MANUFACT):
301 info->flash_id = FLASH_MAN_SST;
303 case BYTEME(STM_MANUFACT):
304 info->flash_id = FLASH_MAN_STM;
306 case BYTEME(INTEL_MANUFACT):
307 info->flash_id = FLASH_MAN_INTEL;
310 info->flash_id = FLASH_UNKNOWN;
311 info->sector_count = 0;
313 addr[0] = BS(0xFF); /* restore read mode, (yes, BS is a NOP) */
314 return 0; /* no or unknown flash */
317 device = BS(addr[2]); /* device ID */
319 DEBUGF("Device ID @ 0x%08x: 0x%08x\n", (&addr[1]), device);
322 case BYTEME(INTEL_ID_28F320J3A):
323 info->flash_id += FLASH_28F320J3A;
324 info->sector_count = 32;
325 info->size = 0x00400000;
328 case BYTEME(INTEL_ID_28F640J3A):
329 info->flash_id += FLASH_28F640J3A;
330 info->sector_count = 64;
331 info->size = 0x00800000;
334 case BYTEME(INTEL_ID_28F128J3A):
335 info->flash_id += FLASH_28F128J3A;
336 info->sector_count = 128;
337 info->size = 0x01000000;
338 break; /* => 16 MB */
341 info->flash_id = FLASH_UNKNOWN;
342 addr[0] = BS(0xFF); /* restore read mode (yes, a NOP) */
343 return 0; /* => no or unknown flash */
347 if (info->sector_count > CFG_MAX_FLASH_SECT) {
348 printf ("** ERROR: sector count %d > max (%d) **\n",
349 info->sector_count, CFG_MAX_FLASH_SECT);
350 info->sector_count = CFG_MAX_FLASH_SECT;
353 addr[0] = BS(0xFF); /* restore read mode */
359 /*-----------------------------------------------------------------------
362 int flash_erase (flash_info_t *info, int s_first, int s_last)
364 int flag, prot, sect;
365 ulong start, now, last;
367 if ((s_first < 0) || (s_first > s_last)) {
368 if (info->flash_id == FLASH_UNKNOWN) {
369 printf ("- missing\n");
371 printf ("- no sectors to erase\n");
376 if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
377 printf ("Can erase only Intel flash types - aborted\n");
382 for (sect=s_first; sect<=s_last; ++sect) {
383 if (info->protect[sect]) {
389 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
394 start = get_timer (0);
396 /* Start erase on unprotected sectors */
397 for (sect = s_first; sect<=s_last; sect++) {
398 if (info->protect[sect] == 0) { /* not protected */
399 vu_char *addr = (vu_char *)(info->start[sect]);
400 unsigned long status;
402 /* Disable interrupts which might cause a timeout here */
403 flag = disable_interrupts();
405 *addr = BS(0x50); /* clear status register */
406 *addr = BS(0x20); /* erase setup */
407 *addr = BS(0xD0); /* erase confirm */
409 /* re-enable interrupts if necessary */
414 /* wait at least 80us - let's wait 1 ms */
417 while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) {
418 if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
419 printf ("Timeout\n");
420 *addr = BS(0xB0); /* suspend erase */
421 *addr = BS(0xFF); /* reset to read mode */
425 /* show that we're waiting */
426 if ((now - last) > 1000) { /* every second */
432 *addr = BS(0xFF); /* reset to read mode */
439 /*-----------------------------------------------------------------------
440 * Copy memory to flash, returns:
443 * 2 - Flash not erased
444 * 4 - Flash not identified
447 #define FLASH_WIDTH 1 /* flash bus width in bytes */
449 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
451 uchar *wp = (uchar *)addr;
454 if (info->flash_id == FLASH_UNKNOWN) {
459 if ((rc = write_data(info, wp, *src)) != 0) {
470 /*-----------------------------------------------------------------------
471 * Write a word to Flash, returns:
474 * 2 - Flash not erased
476 static int write_data (flash_info_t *info, uchar *dest, uchar data)
478 vu_char *addr = (vu_char *)dest;
483 /* Check if Flash is (sufficiently) erased */
484 if ((BS(*addr) & data) != data) {
487 /* Disable interrupts which might cause a timeout here */
488 flag = disable_interrupts();
490 *addr = BS(0x40); /* write setup */
493 /* re-enable interrupts if necessary */
498 start = get_timer (0);
500 while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) {
501 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
502 *addr = BS(0xFF); /* restore read mode */
507 *addr = BS(0xFF); /* restore read mode */
512 /*-----------------------------------------------------------------------