1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24#include <common.h>
25#include <mpc824x.h>
26#include <asm/processor.h>
27
28#if defined(CONFIG_ENV_IS_IN_FLASH)
29# ifndef CONFIG_ENV_ADDR
30# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
31# endif
32# ifndef CONFIG_ENV_SIZE
33# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
34# endif
35# ifndef CONFIG_ENV_SECT_SIZE
36# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
37# endif
38#endif
39
40#define FLASH_BANK_SIZE 0x800000
41#define MAIN_SECT_SIZE 0x40000
42#define PARAM_SECT_SIZE 0x8000
43
44#define BOARD_CTRL_REG 0xFE800013
45
46flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
47
48static int write_data (flash_info_t *info, ulong dest, ulong *data);
49static void write_via_fpu(vu_long *addr, ulong *data);
50static __inline__ unsigned long get_msr(void);
51static __inline__ void set_msr(unsigned long msr);
52
53
54#undef DEBUG_FLASH
55
56
57#ifdef DEBUG_FLASH
58#define DEBUGF(fmt,args...) printf(fmt ,##args)
59#else
60#define DEBUGF(fmt,args...)
61#endif
62
63
64
65
66
67unsigned long flash_init(void)
68{
69 int i, j;
70 ulong size = 0;
71 volatile unsigned char *bcr = (volatile unsigned char *)(BOARD_CTRL_REG);
72
73 DEBUGF("Write protect was: 0x%02X\n", *bcr);
74 *bcr &= 0x1;
75 *bcr |= 0x6;
76 DEBUGF("Write protect is: 0x%02X\n", *bcr);
77
78 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
79 vu_long *addr = (vu_long *)(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE);
80
81 addr[0] = 0x00900090;
82
83 DEBUGF ("Flash bank # %d:\n"
84 "\tManuf. ID @ 0x%08lX: 0x%08lX\n"
85 "\tDevice ID @ 0x%08lX: 0x%08lX\n",
86 i,
87 (ulong)(&addr[0]), addr[0],
88 (ulong)(&addr[2]), addr[2]);
89
90 if ((addr[0] == addr[1]) && (addr[0] == INTEL_MANUFACT) &&
91 (addr[2] == addr[3]) && (addr[2] == INTEL_ID_28F160F3B))
92 {
93 flash_info[i].flash_id = (FLASH_MAN_INTEL & FLASH_VENDMASK) |
94 (INTEL_ID_28F160F3B & FLASH_TYPEMASK);
95 } else {
96 flash_info[i].flash_id = FLASH_UNKNOWN;
97 addr[0] = 0xFFFFFFFF;
98 goto Done;
99 }
100
101 DEBUGF ("flash_id = 0x%08lX\n", flash_info[i].flash_id);
102
103 addr[0] = 0xFFFFFFFF;
104
105 flash_info[i].size = FLASH_BANK_SIZE;
106 flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
107 memset(flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
108 for (j = 0; j < flash_info[i].sector_count; j++) {
109 if (j <= 7) {
110 flash_info[i].start[j] = CONFIG_SYS_FLASH_BASE +
111 i * FLASH_BANK_SIZE +
112 j * PARAM_SECT_SIZE;
113 } else {
114 flash_info[i].start[j] = CONFIG_SYS_FLASH_BASE +
115 i * FLASH_BANK_SIZE +
116 (j - 7)*MAIN_SECT_SIZE;
117 }
118 }
119 size += flash_info[i].size;
120 }
121
122
123
124#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
125#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE + FLASH_BANK_SIZE
126 flash_protect(FLAG_PROTECT_SET,
127 CONFIG_SYS_MONITOR_BASE,
128 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
129 &flash_info[1]);
130#else
131 flash_protect(FLAG_PROTECT_SET,
132 CONFIG_SYS_MONITOR_BASE,
133 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
134 &flash_info[0]);
135#endif
136#endif
137
138#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
139#if CONFIG_ENV_ADDR >= CONFIG_SYS_FLASH_BASE + FLASH_BANK_SIZE
140 flash_protect(FLAG_PROTECT_SET,
141 CONFIG_ENV_ADDR,
142 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
143 &flash_info[1]);
144#else
145 flash_protect(FLAG_PROTECT_SET,
146 CONFIG_ENV_ADDR,
147 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
148 &flash_info[0]);
149#endif
150#endif
151
152Done:
153 return size;
154}
155
156
157
158void flash_print_info (flash_info_t * info)
159{
160 int i;
161
162 switch ((i = info->flash_id & FLASH_VENDMASK)) {
163 case (FLASH_MAN_INTEL & FLASH_VENDMASK):
164 printf ("Intel: ");
165 break;
166 default:
167 printf ("Unknown Vendor 0x%04x ", i);
168 break;
169 }
170
171 switch ((i = info->flash_id & FLASH_TYPEMASK)) {
172 case (INTEL_ID_28F160F3B & FLASH_TYPEMASK):
173 printf ("28F160F3B (16Mbit)\n");
174 break;
175 default:
176 printf ("Unknown Chip Type 0x%04x\n", i);
177 goto Done;
178 break;
179 }
180
181 printf (" Size: %ld MB in %d Sectors\n",
182 info->size >> 20, info->sector_count);
183
184 printf (" Sector Start Addresses:");
185 for (i = 0; i < info->sector_count; i++) {
186 if ((i % 5) == 0) {
187 printf ("\n ");
188 }
189 printf (" %08lX%s", info->start[i],
190 info->protect[i] ? " (RO)" : " ");
191 }
192 printf ("\n");
193
194Done:
195 return;
196}
197
198
199
200
201int flash_erase (flash_info_t *info, int s_first, int s_last)
202{
203 int flag, prot, sect;
204 ulong start, now, last;
205
206 DEBUGF ("Erase flash bank %d sect %d ... %d\n",
207 info - &flash_info[0], s_first, s_last);
208
209 if ((s_first < 0) || (s_first > s_last)) {
210 if (info->flash_id == FLASH_UNKNOWN) {
211 printf ("- missing\n");
212 } else {
213 printf ("- no sectors to erase\n");
214 }
215 return 1;
216 }
217
218 if ((info->flash_id & FLASH_VENDMASK) !=
219 (FLASH_MAN_INTEL & FLASH_VENDMASK)) {
220 printf ("Can erase only Intel flash types - aborted\n");
221 return 1;
222 }
223
224 prot = 0;
225 for (sect=s_first; sect<=s_last; ++sect) {
226 if (info->protect[sect]) {
227 prot++;
228 }
229 }
230
231 if (prot) {
232 printf ("- Warning: %d protected sectors will not be erased!\n",
233 prot);
234 } else {
235 printf ("\n");
236 }
237
238 start = get_timer (0);
239 last = start;
240
241 for (sect = s_first; sect<=s_last; sect++) {
242 if (info->protect[sect] == 0) {
243 vu_long *addr = (vu_long *)(info->start[sect]);
244
245 DEBUGF ("Erase sect %d @ 0x%08lX\n",
246 sect, (ulong)addr);
247
248
249
250
251 flag = disable_interrupts();
252
253 addr[0] = 0x00500050;
254 addr[0] = 0x00200020;
255 addr[0] = 0x00D000D0;
256
257 addr[1] = 0x00500050;
258 addr[1] = 0x00200020;
259 addr[1] = 0x00D000D0;
260
261
262 if (flag)
263 enable_interrupts();
264
265
266 udelay (1000);
267
268 while (((addr[0] & 0x00800080) != 0x00800080) ||
269 ((addr[1] & 0x00800080) != 0x00800080) ) {
270 if ((now=get_timer(start)) >
271 CONFIG_SYS_FLASH_ERASE_TOUT) {
272 printf ("Timeout\n");
273 addr[0] = 0x00B000B0;
274 addr[0] = 0x00FF00FF;
275 return 1;
276 }
277
278
279 if ((now - last) > 1000) {
280 putc ('.');
281 last = now;
282 }
283 }
284
285 addr[0] = 0x00FF00FF;
286 }
287 }
288 printf (" done\n");
289 return 0;
290}
291
292
293
294
295
296
297
298
299
300#define FLASH_WIDTH 8
301
302int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
303{
304 ulong wp, cp, msr;
305 int l, rc, i;
306 ulong data[2];
307 ulong *datah = &data[0];
308 ulong *datal = &data[1];
309
310 DEBUGF ("Flash write_buff: @ 0x%08lx, src 0x%08lx len %ld\n",
311 addr, (ulong)src, cnt);
312
313 if (info->flash_id == FLASH_UNKNOWN) {
314 return 4;
315 }
316
317 msr = get_msr();
318 set_msr(msr | MSR_FP);
319
320 wp = (addr & ~(FLASH_WIDTH-1));
321
322
323
324
325 if ((l = addr - wp) != 0) {
326 *datah = *datal = 0;
327
328 for (i = 0, cp = wp; i < l; i++, cp++) {
329 if (i >= 4) {
330 *datah = (*datah << 8) |
331 ((*datal & 0xFF000000) >> 24);
332 }
333
334 *datal = (*datal << 8) | (*(uchar *)cp);
335 }
336 for (; i < FLASH_WIDTH && cnt > 0; ++i) {
337 char tmp;
338
339 tmp = *src;
340
341 src++;
342
343 if (i >= 4) {
344 *datah = (*datah << 8) |
345 ((*datal & 0xFF000000) >> 24);
346 }
347
348 *datal = (*datal << 8) | tmp;
349
350 --cnt; ++cp;
351 }
352
353 for (; cnt == 0 && i < FLASH_WIDTH; ++i, ++cp) {
354 if (i >= 4) {
355 *datah = (*datah << 8) |
356 ((*datal & 0xFF000000) >> 24);
357 }
358
359 *datal = (*datah << 8) | (*(uchar *)cp);
360 }
361
362 if ((rc = write_data(info, wp, data)) != 0) {
363 set_msr(msr);
364 return (rc);
365 }
366
367 wp += FLASH_WIDTH;
368 }
369
370
371
372
373 while (cnt >= FLASH_WIDTH) {
374 *datah = *(ulong *)src;
375 *datal = *(ulong *)(src + 4);
376 if ((rc = write_data(info, wp, data)) != 0) {
377 set_msr(msr);
378 return (rc);
379 }
380 wp += FLASH_WIDTH;
381 cnt -= FLASH_WIDTH;
382 src += FLASH_WIDTH;
383 }
384
385 if (cnt == 0) {
386 set_msr(msr);
387 return (0);
388 }
389
390
391
392
393 *datah = *datal = 0;
394 for (i = 0, cp = wp; i < FLASH_WIDTH && cnt > 0; ++i, ++cp) {
395 char tmp;
396
397 tmp = *src;
398
399 src++;
400
401 if (i >= 4) {
402 *datah = (*datah << 8) | ((*datal & 0xFF000000) >> 24);
403 }
404
405 *datal = (*datal << 8) | tmp;
406
407 --cnt;
408 }
409
410 for (; i < FLASH_WIDTH; ++i, ++cp) {
411 if (i >= 4) {
412 *datah = (*datah << 8) | ((*datal & 0xFF000000) >> 24);
413 }
414
415 *datal = (*datal << 8) | (*(uchar *)cp);
416 }
417
418 rc = write_data(info, wp, data);
419 set_msr(msr);
420
421 return (rc);
422}
423
424
425
426
427
428
429
430static int write_data (flash_info_t *info, ulong dest, ulong *data)
431{
432 vu_long *addr = (vu_long *)dest;
433 ulong start;
434 int flag;
435
436
437 if (((addr[0] & data[0]) != data[0]) ||
438 ((addr[1] & data[1]) != data[1]) ) {
439 return (2);
440 }
441
442 flag = disable_interrupts();
443
444 addr[0] = 0x00400040;
445 write_via_fpu(addr, data);
446
447
448 if (flag)
449 enable_interrupts();
450
451 start = get_timer (0);
452
453 while (((addr[0] & 0x00800080) != 0x00800080) ||
454 ((addr[1] & 0x00800080) != 0x00800080) ) {
455 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
456 addr[0] = 0x00FF00FF;
457 return (1);
458 }
459 }
460
461 addr[0] = 0x00FF00FF;
462
463 return (0);
464}
465
466
467
468static void write_via_fpu(vu_long *addr, ulong *data)
469{
470 __asm__ __volatile__ ("lfd 1, 0(%0)" : : "r" (data));
471 __asm__ __volatile__ ("stfd 1, 0(%0)" : : "r" (addr));
472}
473
474
475static __inline__ unsigned long get_msr(void)
476{
477 unsigned long msr;
478
479 __asm__ __volatile__ ("mfmsr %0" : "=r" (msr) :);
480 return msr;
481}
482
483static __inline__ void set_msr(unsigned long msr)
484{
485 __asm__ __volatile__ ("mtmsr %0" : : "r" (msr));
486}
487
