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wdenkaffae2b2002-08-17 09:36:01 +00001/*
2 * (C) Copyright 2001
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <mpc824x.h>
26
27#if defined(CFG_ENV_IS_IN_FLASH)
28# ifndef CFG_ENV_ADDR
29# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
30# endif
31# ifndef CFG_ENV_SIZE
32# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
33# endif
34# ifndef CFG_ENV_SECT_SIZE
35# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
36# endif
37#endif
38
39/*---------------------------------------------------------------------*/
40#undef DEBUG_FLASH
41
42#ifdef DEBUG_FLASH
43#define DEBUGF(fmt,args...) printf(fmt ,##args)
44#else
45#define DEBUGF(fmt,args...)
46#endif
47/*---------------------------------------------------------------------*/
48
49flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
50
51/*-----------------------------------------------------------------------
52 * Functions
53 */
54static ulong flash_get_size (vu_char *addr, flash_info_t *info);
55static int write_data (flash_info_t *info, uchar *dest, uchar data);
56static void flash_get_offsets (ulong base, flash_info_t *info);
57
58
wdenkaffae2b2002-08-17 09:36:01 +000059/*
60 * don't ask. its stupid, but more than one soul has had to live with this mistake
61 * "swaptab[i]" is the value of "i" with the bits reversed.
62 */
63
64#define MUSENKI_BROKEN_FLASH 1
65
66#ifdef MUSENKI_BROKEN_FLASH
67unsigned char swaptab[256] = {
68 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
69 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
70 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
71 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
72 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
73 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
74 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
75 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
76 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
77 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
78 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
79 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
80 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
81 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
82 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
83 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
84 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
85 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
86 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
87 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
88 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
89 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
90 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
91 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
92 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
93 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
94 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
95 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
96 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
97 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
98 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
99 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
100};
101
102#define BS(b) (swaptab[b])
103
104#else
105
106#define BS(b) (b)
107
108#endif
109
110#define BYTEME(x) ((x) & 0xFF)
111
112/*-----------------------------------------------------------------------
113 */
114
115unsigned long flash_init (void)
116{
117 unsigned long size_b0, size_b1;
118 int i;
119
120 /* Init: no FLASHes known */
121 for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
122 flash_info[i].flash_id = FLASH_UNKNOWN;
123 }
124
125 /* Static FLASH Bank configuration here - FIXME XXX */
126
127 DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",CFG_FLASH_BASE0_PRELIM);
128
129 size_b0 = flash_get_size((vu_char *)CFG_FLASH_BASE0_PRELIM, &flash_info[0]);
130
131 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
132 printf ("## Unknown FLASH on Bank 0: "
133 "ID 0x%lx, Size = 0x%08lx = %ld MB\n",
134 flash_info[0].flash_id,
135 size_b0, size_b0<<20);
136 }
137
138 DEBUGF("## Get flash bank 2 size @ 0x%08x\n",CFG_FLASH_BASE1_PRELIM);
139 size_b1 = flash_get_size((vu_char *)CFG_FLASH_BASE1_PRELIM, &flash_info[1]);
140
141 DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
142
143 flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
144
145 flash_info[0].size = size_b0;
146
147#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
wdenkb9a83a92003-05-30 12:48:29 +0000148 DEBUGF("protect monitor %x @ %x\n", CFG_MONITOR_BASE, monitor_flash_len);
wdenkaffae2b2002-08-17 09:36:01 +0000149 /* monitor protection ON by default */
150 flash_protect(FLAG_PROTECT_SET,
151 CFG_MONITOR_BASE,
wdenkb9a83a92003-05-30 12:48:29 +0000152 CFG_MONITOR_BASE+monitor_flash_len-1,
wdenkaffae2b2002-08-17 09:36:01 +0000153 &flash_info[0]);
154#endif
155
156#ifdef CFG_ENV_IS_IN_FLASH
157 /* ENV protection ON by default */
158 DEBUGF("protect environtment %x @ %x\n", CFG_ENV_ADDR, CFG_ENV_SECT_SIZE);
159 flash_protect(FLAG_PROTECT_SET,
160 CFG_ENV_ADDR,
161 CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
162 &flash_info[0]);
163#endif
164
165 if (size_b1) {
166 flash_info[1].size = size_b1;
167 flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);
168
169#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
170 /* monitor protection ON by default */
171 flash_protect(FLAG_PROTECT_SET,
172 CFG_MONITOR_BASE,
wdenkb9a83a92003-05-30 12:48:29 +0000173 CFG_MONITOR_BASE+monitor_flash_len-1,
wdenkaffae2b2002-08-17 09:36:01 +0000174 &flash_info[1]);
175#endif
176
177#ifdef CFG_ENV_IS_IN_FLASH
178 /* ENV protection ON by default */
179 flash_protect(FLAG_PROTECT_SET,
180 CFG_ENV_ADDR,
181 CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
182 &flash_info[1]);
183#endif
184 } else {
185 flash_info[1].flash_id = FLASH_UNKNOWN;
186 flash_info[1].sector_count = -1;
187 flash_info[1].size = 0;
188 }
189
190 DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
191
192 return (size_b0 + size_b1);
193}
194
195/*-----------------------------------------------------------------------
196 */
197static void flash_get_offsets (ulong base, flash_info_t *info)
198{
199 int i;
200
201 if (info->flash_id == FLASH_UNKNOWN) {
202 return;
203 }
204
205 switch (info->flash_id & FLASH_VENDMASK) {
206 case FLASH_MAN_INTEL:
207 for (i = 0; i < info->sector_count; i++) {
208 info->start[i] = base;
209 base += 0x00020000; /* 128k per bank */
210 }
211 return;
212
213 default:
214 printf ("Don't know sector ofsets for flash type 0x%lx\n", info->flash_id);
215 return;
216 }
217}
218
219/*-----------------------------------------------------------------------
220 */
221void flash_print_info (flash_info_t *info)
222{
223 int i;
224
225 if (info->flash_id == FLASH_UNKNOWN) {
226 printf ("missing or unknown FLASH type\n");
227 return;
228 }
229
230 switch (info->flash_id & FLASH_VENDMASK) {
231 case FLASH_MAN_AMD: printf ("AMD "); break;
232 case FLASH_MAN_FUJ: printf ("Fujitsu "); break;
233 case FLASH_MAN_SST: printf ("SST "); break;
234 case FLASH_MAN_STM: printf ("STM "); break;
235 case FLASH_MAN_INTEL: printf ("Intel "); break;
236 case FLASH_MAN_MT: printf ("MT "); break;
237 default: printf ("Unknown Vendor "); break;
238 }
239
240 switch (info->flash_id & FLASH_TYPEMASK) {
241 case FLASH_28F320J3A: printf ("28F320J3A (32Mbit = 128K x 32)\n");
242 break;
243 case FLASH_28F640J3A: printf ("28F640J3A (64Mbit = 128K x 64)\n");
244 break;
245 case FLASH_28F128J3A: printf ("28F128J3A (128Mbit = 128K x 128)\n");
246 break;
247 default: printf ("Unknown Chip Type\n");
248 break;
249 }
250
251 if (info->size >= (1 << 20)) {
252 i = 20;
253 } else {
254 i = 10;
255 }
256 printf (" Size: %ld %cB in %d Sectors\n",
257 info->size >> i,
258 (i == 20) ? 'M' : 'k',
259 info->sector_count);
260
261 printf (" Sector Start Addresses:");
262 for (i=0; i<info->sector_count; ++i) {
263 if ((i % 5) == 0)
264 printf ("\n ");
265 printf (" %08lX%s",
266 info->start[i],
267 info->protect[i] ? " (RO)" : " "
268 );
269 }
270 printf ("\n");
271 return;
272}
273
274/*-----------------------------------------------------------------------
275 */
276
277
278/*-----------------------------------------------------------------------
279 */
280
281/*
282 * The following code cannot be run from FLASH!
283 */
284static ulong flash_get_size (vu_char *addr, flash_info_t *info)
285{
286 vu_char manuf, device;
287
288 addr[0] = BS(0x90);
289 manuf = BS(addr[0]);
290 DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (vu_char *)addr, manuf);
291
292 switch (manuf) {
293 case BYTEME(AMD_MANUFACT):
294 info->flash_id = FLASH_MAN_AMD;
295 break;
296 case BYTEME(FUJ_MANUFACT):
297 info->flash_id = FLASH_MAN_FUJ;
298 break;
299 case BYTEME(SST_MANUFACT):
300 info->flash_id = FLASH_MAN_SST;
301 break;
302 case BYTEME(STM_MANUFACT):
303 info->flash_id = FLASH_MAN_STM;
304 break;
305 case BYTEME(INTEL_MANUFACT):
306 info->flash_id = FLASH_MAN_INTEL;
307 break;
308 default:
309 info->flash_id = FLASH_UNKNOWN;
310 info->sector_count = 0;
311 info->size = 0;
312 addr[0] = BS(0xFF); /* restore read mode, (yes, BS is a NOP) */
313 return 0; /* no or unknown flash */
314 }
315
316 device = BS(addr[2]); /* device ID */
317
318 DEBUGF("Device ID @ 0x%08x: 0x%08x\n", (&addr[1]), device);
319
320 switch (device) {
321 case BYTEME(INTEL_ID_28F320J3A):
322 info->flash_id += FLASH_28F320J3A;
323 info->sector_count = 32;
324 info->size = 0x00400000;
325 break; /* => 4 MB */
326
327 case BYTEME(INTEL_ID_28F640J3A):
328 info->flash_id += FLASH_28F640J3A;
329 info->sector_count = 64;
330 info->size = 0x00800000;
331 break; /* => 8 MB */
332
333 case BYTEME(INTEL_ID_28F128J3A):
334 info->flash_id += FLASH_28F128J3A;
335 info->sector_count = 128;
336 info->size = 0x01000000;
337 break; /* => 16 MB */
338
339 default:
340 info->flash_id = FLASH_UNKNOWN;
341 addr[0] = BS(0xFF); /* restore read mode (yes, a NOP) */
342 return 0; /* => no or unknown flash */
343
344 }
345
346 if (info->sector_count > CFG_MAX_FLASH_SECT) {
347 printf ("** ERROR: sector count %d > max (%d) **\n",
348 info->sector_count, CFG_MAX_FLASH_SECT);
349 info->sector_count = CFG_MAX_FLASH_SECT;
350 }
351
352 addr[0] = BS(0xFF); /* restore read mode */
353
354 return (info->size);
355}
356
357
358/*-----------------------------------------------------------------------
359 */
360
361int flash_erase (flash_info_t *info, int s_first, int s_last)
362{
363 int flag, prot, sect;
364 ulong start, now, last;
365
366 if ((s_first < 0) || (s_first > s_last)) {
367 if (info->flash_id == FLASH_UNKNOWN) {
368 printf ("- missing\n");
369 } else {
370 printf ("- no sectors to erase\n");
371 }
372 return 1;
373 }
374
375 if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
376 printf ("Can erase only Intel flash types - aborted\n");
377 return 1;
378 }
379
380 prot = 0;
381 for (sect=s_first; sect<=s_last; ++sect) {
382 if (info->protect[sect]) {
383 prot++;
384 }
385 }
386
387 if (prot) {
388 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
389 } else {
390 printf ("\n");
391 }
392
393 start = get_timer (0);
394 last = start;
395 /* Start erase on unprotected sectors */
396 for (sect = s_first; sect<=s_last; sect++) {
397 if (info->protect[sect] == 0) { /* not protected */
398 vu_char *addr = (vu_char *)(info->start[sect]);
399 unsigned long status;
400
401 /* Disable interrupts which might cause a timeout here */
402 flag = disable_interrupts();
403
404 *addr = BS(0x50); /* clear status register */
405 *addr = BS(0x20); /* erase setup */
406 *addr = BS(0xD0); /* erase confirm */
407
408 /* re-enable interrupts if necessary */
409 if (flag) {
410 enable_interrupts();
411 }
412
413 /* wait at least 80us - let's wait 1 ms */
414 udelay (1000);
415
416 while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) {
417 if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
418 printf ("Timeout\n");
419 *addr = BS(0xB0); /* suspend erase */
420 *addr = BS(0xFF); /* reset to read mode */
421 return 1;
422 }
423
424 /* show that we're waiting */
425 if ((now - last) > 1000) { /* every second */
426 putc ('.');
427 last = now;
428 }
429 }
430
431 *addr = BS(0xFF); /* reset to read mode */
432 }
433 }
434 printf (" done\n");
435 return 0;
436}
437
438/*-----------------------------------------------------------------------
439 * Copy memory to flash, returns:
440 * 0 - OK
441 * 1 - write timeout
442 * 2 - Flash not erased
443 * 4 - Flash not identified
444 */
445
446#define FLASH_WIDTH 1 /* flash bus width in bytes */
447
448int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
449{
450 uchar *wp = (uchar *)addr;
451 int rc;
452
453 if (info->flash_id == FLASH_UNKNOWN) {
454 return 4;
455 }
456
457 while (cnt > 0) {
458 if ((rc = write_data(info, wp, *src)) != 0) {
459 return rc;
460 }
461 wp++;
462 src++;
463 cnt--;
464 }
465
466 return cnt;
467}
468
469/*-----------------------------------------------------------------------
470 * Write a word to Flash, returns:
471 * 0 - OK
472 * 1 - write timeout
473 * 2 - Flash not erased
474 */
475static int write_data (flash_info_t *info, uchar *dest, uchar data)
476{
477 vu_char *addr = (vu_char *)dest;
478 ulong status;
479 ulong start;
480 int flag;
481
482 /* Check if Flash is (sufficiently) erased */
483 if ((BS(*addr) & data) != data) {
484 return 2;
485 }
486 /* Disable interrupts which might cause a timeout here */
487 flag = disable_interrupts();
488
489 *addr = BS(0x40); /* write setup */
490 *addr = data;
491
492 /* re-enable interrupts if necessary */
493 if (flag) {
494 enable_interrupts();
495 }
496
497 start = get_timer (0);
498
499 while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) {
500 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
501 *addr = BS(0xFF); /* restore read mode */
502 return 1;
503 }
504 }
505
506 *addr = BS(0xFF); /* restore read mode */
507
508 return 0;
509}
510
511/*-----------------------------------------------------------------------
512 */