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10#include <common.h>
11#include <mpc8260.h>
12#include <board/hymod/flash.h>
13
14flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
15
16
17
18
19#define FLAG_PROTECT_SET 0x01
20#define FLAG_PROTECT_CLEAR 0x02
21
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27
28
29static void
30bank_probe (flash_info_t *fip, volatile bank_addr_t base)
31{
32 volatile bank_addr_t addr;
33 bank_word_t word;
34 int i;
35
36
37 *base = BANK_CMD_RST;
38
39
40 *base = BANK_CMD_RD_ID;
41
42
43 word = *BANK_REG_MAN_CODE (base);
44 if (word != BANK_FILL_WORD (INTEL_MANUFACT&0xff))
45 panic ("\nbad manufacturer's code (0x%08lx) at addr 0x%08lx",
46 (unsigned long)word, (unsigned long)base);
47
48
49 word = *BANK_REG_DEV_CODE (base);
50 switch (word) {
51
52 case BANK_FILL_WORD (INTEL_ID_28F320J5&0xff):
53 fip->flash_id = FLASH_MAN_INTEL | FLASH_28F320J5;
54 fip->sector_count = 32;
55 break;
56
57 case BANK_FILL_WORD (INTEL_ID_28F640J5&0xff):
58 fip->flash_id = FLASH_MAN_INTEL | FLASH_28F640J5;
59 fip->sector_count = 64;
60 break;
61
62 case BANK_FILL_WORD (INTEL_ID_28F320J3A&0xff):
63 fip->flash_id = FLASH_MAN_INTEL | FLASH_28F320J3A;
64 fip->sector_count = 32;
65 break;
66
67 case BANK_FILL_WORD (INTEL_ID_28F640J3A&0xff):
68 fip->flash_id = FLASH_MAN_INTEL | FLASH_28F640J3A;
69 fip->sector_count = 64;
70 break;
71
72 case BANK_FILL_WORD (INTEL_ID_28F128J3A&0xff):
73 fip->flash_id = FLASH_MAN_INTEL | FLASH_28F128J3A;
74 fip->sector_count = 128;
75 break;
76
77 default:
78 panic ("\nbad device code (0x%08lx) at addr 0x%08lx",
79 (unsigned long)word, (unsigned long)base);
80 }
81
82 if (fip->sector_count >= CONFIG_SYS_MAX_FLASH_SECT)
83 panic ("\ntoo many sectors (%d) in flash at address 0x%08lx",
84 fip->sector_count, (unsigned long)base);
85
86 addr = base;
87 for (i = 0; i < fip->sector_count; i++) {
88 fip->start[i] = (unsigned long)addr;
89 fip->protect[i] = 0;
90 addr = BANK_ADDR_NEXT_BLK (addr);
91 }
92
93 fip->size = (bank_size_t)addr - (bank_size_t)base;
94
95
96 *base = BANK_CMD_RST;
97}
98
99static void
100bank_reset (flash_info_t *info, int sect)
101{
102 volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
103
104#ifdef FLASH_DEBUG
105 printf ("writing reset cmd to addr 0x%08lx\n", (unsigned long)addr);
106#endif
107
108 *addr = BANK_CMD_RST;
109}
110
111static void
112bank_erase_init (flash_info_t *info, int sect)
113{
114 volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
115 int flag;
116
117#ifdef FLASH_DEBUG
118 printf ("erasing sector %d, addr = 0x%08lx\n",
119 sect, (unsigned long)addr);
120#endif
121
122
123 flag = disable_interrupts ();
124
125#ifdef FLASH_DEBUG
126 printf ("writing erase cmd to addr 0x%08lx\n", (unsigned long)addr);
127#endif
128 *addr = BANK_CMD_ERASE1;
129 *addr = BANK_CMD_ERASE2;
130
131
132 if (flag)
133 enable_interrupts ();
134}
135
136static int
137bank_erase_poll (flash_info_t *info, int sect)
138{
139 volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
140 bank_word_t stat = *addr;
141
142#ifdef FLASH_DEBUG
143 printf ("checking status at addr 0x%08lx [0x%08lx]\n",
144 (unsigned long)addr, (unsigned long)stat);
145#endif
146
147 if ((stat & BANK_STAT_RDY) == BANK_STAT_RDY) {
148 if ((stat & BANK_STAT_ERR) != 0) {
149 printf ("failed on sector %d [0x%08lx] at "
150 "address 0x%08lx\n", sect,
151 (unsigned long)stat, (unsigned long)addr);
152 *addr = BANK_CMD_CLR_STAT;
153 return (-1);
154 }
155 else
156 return (1);
157 }
158 else
159 return (0);
160}
161
162static int
163bank_write_word (volatile bank_addr_t addr, bank_word_t value)
164{
165 bank_word_t stat;
166 ulong start;
167 int flag, retval;
168
169
170 flag = disable_interrupts ();
171
172 *addr = BANK_CMD_PROG;
173
174 *addr = value;
175
176
177 if (flag)
178 enable_interrupts ();
179
180 retval = 0;
181
182
183 start = get_timer (0);
184 do {
185 if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
186 retval = 1;
187 goto done;
188 }
189 stat = *addr;
190 } while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);
191
192 if ((stat & BANK_STAT_ERR) != 0) {
193 printf ("flash program failed [0x%08lx] at address 0x%08lx\n",
194 (unsigned long)stat, (unsigned long)addr);
195 *addr = BANK_CMD_CLR_STAT;
196 retval = 3;
197 }
198
199done:
200
201 *addr = BANK_CMD_RST;
202
203 return (retval);
204}
205
206
207
208
209unsigned long
210flash_init (void)
211{
212 int i;
213
214
215 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
216 flash_info[i].flash_id = FLASH_UNKNOWN;
217 }
218
219 bank_probe (&flash_info[0], (bank_addr_t)CONFIG_SYS_FLASH_BASE);
220
221
222
223
224
225#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
226 (void)flash_protect (FLAG_PROTECT_SET,
227 CONFIG_SYS_MONITOR_BASE,
228 CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
229 &flash_info[0]);
230#endif
231
232#if defined(CONFIG_SYS_FLASH_ENV_ADDR)
233 (void)flash_protect (FLAG_PROTECT_SET,
234 CONFIG_SYS_FLASH_ENV_ADDR,
235#if defined(CONFIG_SYS_FLASH_ENV_BUF)
236 CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_BUF - 1,
237#else
238 CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_SIZE - 1,
239#endif
240 &flash_info[0]);
241#endif
242
243 return flash_info[0].size;
244}
245
246
247
248void
249flash_print_info (flash_info_t *info)
250{
251 int i;
252
253 if (info->flash_id == FLASH_UNKNOWN) {
254 printf ("missing or unknown FLASH type\n");
255 return;
256 }
257
258 switch (info->flash_id & FLASH_VENDMASK) {
259 case FLASH_MAN_INTEL: printf ("INTEL "); break;
260 default: printf ("Unknown Vendor "); break;
261 }
262
263 switch (info->flash_id & FLASH_TYPEMASK) {
264 case FLASH_28F320J5: printf ("28F320J5 (32 Mbit, 2 x 16bit)\n");
265 break;
266 case FLASH_28F640J5: printf ("28F640J5 (64 Mbit, 2 x 16bit)\n");
267 break;
268 case FLASH_28F320J3A: printf ("28F320J3A (32 Mbit, 2 x 16bit)\n");
269 break;
270 case FLASH_28F640J3A: printf ("28F640J3A (64 Mbit, 2 x 16bit)\n");
271 break;
272 case FLASH_28F128J3A: printf ("28F320J3A (128 Mbit, 2 x 16bit)\n");
273 break;
274 default: printf ("Unknown Chip Type\n");
275 break;
276 }
277
278 printf (" Size: %ld MB in %d Sectors\n",
279 info->size >> 20, info->sector_count);
280
281 printf (" Sector Start Addresses:");
282 for (i=0; i<info->sector_count; ++i) {
283 if ((i % 5) == 0)
284 printf ("\n ");
285 printf (" %08lX%s",
286 info->start[i],
287 info->protect[i] ? " (RO)" : " "
288 );
289 }
290 printf ("\n");
291 return;
292}
293
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299
300
301int
302flash_erase (flash_info_t *info, int s_first, int s_last)
303{
304 int prot, sect, haderr;
305 ulong start, now, last;
306 int rcode = 0;
307
308#ifdef FLASH_DEBUG
309 printf ("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
310 " Bank # %d: ", s_last - s_first + 1, s_first, s_last,
311 (info - flash_info) + 1);
312 flash_print_info (info);
313#endif
314
315 if ((s_first < 0) || (s_first > s_last)) {
316 if (info->flash_id == FLASH_UNKNOWN) {
317 printf ("- missing\n");
318 } else {
319 printf ("- no sectors to erase\n");
320 }
321 return 1;
322 }
323
324 prot = 0;
325 for (sect = s_first; sect <= s_last; ++sect) {
326 if (info->protect[sect]) {
327 prot++;
328 }
329 }
330
331 if (prot) {
332 printf ("- Warning: %d protected sector%s will not be erased\n",
333 prot, (prot > 1 ? "s" : ""));
334 }
335
336 start = get_timer (0);
337 last = 0;
338 haderr = 0;
339
340 for (sect = s_first; sect <= s_last; sect++) {
341 if (info->protect[sect] == 0) {
342 ulong estart;
343 int sectdone;
344
345 bank_erase_init (info, sect);
346
347
348 udelay (1000);
349
350 estart = get_timer (start);
351
352 do {
353 now = get_timer (start);
354
355 if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) {
356 printf ("Timeout (sect %d)\n", sect);
357 haderr = 1;
358 rcode = 1;
359 break;
360 }
361
362#ifndef FLASH_DEBUG
363
364 if ((now - last) > 1000) {
365 putc ('.');
366 last = now;
367 }
368#endif
369
370 sectdone = bank_erase_poll (info, sect);
371
372 if (sectdone < 0) {
373 haderr = 1;
374 rcode = 1;
375 break;
376 }
377
378 } while (!sectdone);
379
380 if (haderr)
381 break;
382 }
383 }
384
385 if (haderr > 0)
386 printf (" failed\n");
387 else
388 printf (" done\n");
389
390
391 for (sect = s_first; sect <= s_last; sect++) {
392 if (info->protect[sect] == 0) {
393 bank_reset (info, sect);
394 }
395 }
396 return rcode;
397}
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404
405
406static int
407write_word (flash_info_t *info, ulong dest, ulong data)
408{
409
410 if ((*(ulong *)dest & data) != data)
411 return (2);
412
413 return (bank_write_word ((bank_addr_t)dest, (bank_word_t)data));
414}
415
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422
423
424int
425write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
426{
427 ulong cp, wp, data;
428 int i, l, rc;
429
430 wp = (addr & ~3);
431
432
433
434
435 if ((l = addr - wp) != 0) {
436 data = 0;
437 for (i=0, cp=wp; i<l; ++i, ++cp) {
438 data = (data << 8) | (*(uchar *)cp);
439 }
440 for (; i<4 && cnt>0; ++i) {
441 data = (data << 8) | *src++;
442 --cnt;
443 ++cp;
444 }
445 for (; cnt==0 && i<4; ++i, ++cp) {
446 data = (data << 8) | (*(uchar *)cp);
447 }
448
449 if ((rc = write_word (info, wp, data)) != 0) {
450 return (rc);
451 }
452 wp += 4;
453 }
454
455
456
457
458 while (cnt >= 4) {
459 data = 0;
460 for (i=0; i<4; ++i) {
461 data = (data << 8) | *src++;
462 }
463 if ((rc = write_word (info, wp, data)) != 0) {
464 return (rc);
465 }
466 wp += 4;
467 cnt -= 4;
468 }
469
470 if (cnt == 0) {
471 return (0);
472 }
473
474
475
476
477 data = 0;
478 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
479 data = (data << 8) | *src++;
480 --cnt;
481 }
482 for (; i<4; ++i, ++cp) {
483 data = (data << 8) | (*(uchar *)cp);
484 }
485
486 return (write_word (info, wp, data));
487}
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491
