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fe8c2806 WD |
1 | /* |
2 | * (C) Copyright 2000 | |
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 | #include <asm/processor.h> | |
27 | #include <asm/pci_io.h> | |
28 | #include <w83c553f.h> | |
29 | ||
30 | #define ROM_CS0_START 0xFF800000 | |
31 | #define ROM_CS1_START 0xFF000000 | |
32 | ||
33 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ | |
34 | ||
35 | #if defined(CFG_ENV_IS_IN_FLASH) | |
36 | # ifndef CFG_ENV_ADDR | |
37 | # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET) | |
38 | # endif | |
39 | # ifndef CFG_ENV_SIZE | |
40 | # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE | |
41 | # endif | |
42 | # ifndef CFG_ENV_SECT_SIZE | |
43 | # define CFG_ENV_SECT_SIZE CFG_ENV_SIZE | |
44 | # endif | |
45 | #endif | |
46 | ||
47 | /*----------------------------------------------------------------------- | |
48 | * Functions | |
49 | */ | |
50 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
51 | #if 0 | |
52 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
53 | #endif /* 0 */ | |
54 | ||
55 | /*flash command address offsets*/ | |
56 | ||
57 | #if 0 | |
58 | #define ADDR0 (0x555) | |
59 | #define ADDR1 (0x2AA) | |
60 | #define ADDR3 (0x001) | |
61 | #else | |
62 | #define ADDR0 (0xAAA) | |
63 | #define ADDR1 (0x555) | |
64 | #define ADDR3 (0x001) | |
65 | #endif | |
66 | ||
67 | #define FLASH_WORD_SIZE unsigned char | |
68 | ||
69 | /*----------------------------------------------------------------------- | |
70 | */ | |
71 | ||
72 | #if 0 | |
73 | static int byte_parity_odd(unsigned char x) __attribute__ ((const)); | |
74 | #endif /* 0 */ | |
75 | static unsigned long flash_id(unsigned char mfct, unsigned char chip) __attribute__ ((const)); | |
76 | ||
77 | typedef struct | |
78 | { | |
79 | FLASH_WORD_SIZE extval; | |
80 | unsigned short intval; | |
81 | } map_entry; | |
82 | ||
83 | #if 0 | |
84 | static int | |
85 | byte_parity_odd(unsigned char x) | |
86 | { | |
87 | x ^= x >> 4; | |
88 | x ^= x >> 2; | |
89 | x ^= x >> 1; | |
90 | return (x & 0x1) != 0; | |
91 | } | |
92 | #endif /* 0 */ | |
93 | ||
94 | ||
fe8c2806 WD |
95 | static unsigned long |
96 | flash_id(unsigned char mfct, unsigned char chip) | |
97 | { | |
98 | static const map_entry mfct_map[] = | |
99 | { | |
100 | {(FLASH_WORD_SIZE) AMD_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_AMD >> 16)}, | |
101 | {(FLASH_WORD_SIZE) FUJ_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_FUJ >> 16)}, | |
102 | {(FLASH_WORD_SIZE) STM_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_STM >> 16)}, | |
103 | {(FLASH_WORD_SIZE) MT_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_MT >> 16)}, | |
104 | {(FLASH_WORD_SIZE) INTEL_MANUFACT,(unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)}, | |
105 | {(FLASH_WORD_SIZE) INTEL_ALT_MANU,(unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)} | |
106 | }; | |
107 | ||
108 | static const map_entry chip_map[] = | |
109 | { | |
110 | {AMD_ID_F040B, FLASH_AM040}, | |
111 | {(FLASH_WORD_SIZE) STM_ID_x800AB, FLASH_STM800AB} | |
112 | }; | |
113 | ||
114 | const map_entry *p; | |
115 | unsigned long result = FLASH_UNKNOWN; | |
116 | ||
117 | /* find chip id */ | |
118 | for(p = &chip_map[0]; p < &chip_map[sizeof chip_map / sizeof chip_map[0]]; p++) | |
119 | if(p->extval == chip) | |
120 | { | |
121 | result = FLASH_VENDMASK | p->intval; | |
122 | break; | |
123 | } | |
124 | ||
125 | /* find vendor id */ | |
126 | for(p = &mfct_map[0]; p < &mfct_map[sizeof mfct_map / sizeof mfct_map[0]]; p++) | |
127 | if(p->extval == mfct) | |
128 | { | |
129 | result &= ~FLASH_VENDMASK; | |
130 | result |= (unsigned long) p->intval << 16; | |
131 | break; | |
132 | } | |
133 | ||
134 | return result; | |
135 | } | |
136 | ||
137 | ||
fe8c2806 WD |
138 | unsigned long |
139 | flash_init(void) | |
140 | { | |
141 | unsigned long i; | |
142 | unsigned char j; | |
143 | static const ulong flash_banks[] = CFG_FLASH_BANKS; | |
144 | ||
145 | /* Init: no FLASHes known */ | |
146 | for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) | |
147 | { | |
148 | flash_info_t * const pflinfo = &flash_info[i]; | |
149 | pflinfo->flash_id = FLASH_UNKNOWN; | |
150 | pflinfo->size = 0; | |
151 | pflinfo->sector_count = 0; | |
152 | } | |
153 | ||
154 | /* Enable writes to Sandpoint flash */ | |
155 | { | |
156 | register unsigned char temp; | |
157 | CONFIG_READ_BYTE(CFG_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR, temp); | |
158 | temp &= ~0x20; /* clear BIOSWP bit */ | |
159 | CONFIG_WRITE_BYTE(CFG_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR, temp); | |
160 | } | |
161 | ||
162 | for(i = 0; i < sizeof flash_banks / sizeof flash_banks[0]; i++) | |
163 | { | |
164 | flash_info_t * const pflinfo = &flash_info[i]; | |
165 | const unsigned long base_address = flash_banks[i]; | |
166 | volatile FLASH_WORD_SIZE * const flash = (FLASH_WORD_SIZE *) base_address; | |
167 | #if 0 | |
168 | volatile FLASH_WORD_SIZE * addr2; | |
169 | #endif | |
170 | #if 0 | |
171 | /* write autoselect sequence */ | |
172 | flash[0x5555] = 0xaa; | |
173 | flash[0x2aaa] = 0x55; | |
174 | flash[0x5555] = 0x90; | |
175 | #else | |
176 | flash[0xAAA << (3 * i)] = 0xaa; | |
177 | flash[0x555 << (3 * i)] = 0x55; | |
178 | flash[0xAAA << (3 * i)] = 0x90; | |
179 | #endif | |
180 | __asm__ __volatile__("sync"); | |
181 | ||
182 | #if 0 | |
183 | pflinfo->flash_id = flash_id(flash[0x0], flash[0x1]); | |
184 | #else | |
185 | pflinfo->flash_id = flash_id(flash[0x0], flash[0x2 + 14 * i]); | |
186 | #endif | |
187 | ||
188 | switch(pflinfo->flash_id & FLASH_TYPEMASK) | |
189 | { | |
190 | case FLASH_AM040: | |
8bde7f77 | 191 | pflinfo->size = 0x00080000; |
fe8c2806 | 192 | pflinfo->sector_count = 8; |
8bde7f77 | 193 | for(j = 0; j < 8; j++) |
fe8c2806 WD |
194 | { |
195 | pflinfo->start[j] = base_address + 0x00010000 * j; | |
196 | pflinfo->protect[j] = flash[(j << 16) | 0x2]; | |
197 | } | |
198 | break; | |
199 | case FLASH_STM800AB: | |
200 | pflinfo->size = 0x00100000; | |
201 | pflinfo->sector_count = 19; | |
202 | pflinfo->start[0] = base_address; | |
203 | pflinfo->start[1] = base_address + 0x4000; | |
204 | pflinfo->start[2] = base_address + 0x6000; | |
205 | pflinfo->start[3] = base_address + 0x8000; | |
206 | for(j = 1; j < 16; j++) | |
207 | { | |
208 | pflinfo->start[j+3] = base_address + 0x00010000 * j; | |
209 | } | |
210 | #if 0 | |
8bde7f77 WD |
211 | /* check for protected sectors */ |
212 | for (j = 0; j < pflinfo->sector_count; j++) { | |
213 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ | |
214 | /* D0 = 1 if protected */ | |
215 | addr2 = (volatile FLASH_WORD_SIZE *)(pflinfo->start[j]); | |
216 | if (pflinfo->flash_id & FLASH_MAN_SST) | |
217 | pflinfo->protect[j] = 0; | |
218 | else | |
219 | pflinfo->protect[j] = addr2[2] & 1; | |
220 | } | |
fe8c2806 WD |
221 | #endif |
222 | break; | |
223 | } | |
224 | /* Protect monitor and environment sectors | |
225 | */ | |
226 | #if CFG_MONITOR_BASE >= CFG_FLASH_BASE | |
227 | flash_protect(FLAG_PROTECT_SET, | |
228 | CFG_MONITOR_BASE, | |
3b57fe0a | 229 | CFG_MONITOR_BASE + monitor_flash_len - 1, |
fe8c2806 WD |
230 | &flash_info[0]); |
231 | #endif | |
232 | ||
233 | #if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR) | |
234 | flash_protect(FLAG_PROTECT_SET, | |
235 | CFG_ENV_ADDR, | |
236 | CFG_ENV_ADDR + CFG_ENV_SIZE - 1, | |
237 | &flash_info[0]); | |
238 | #endif | |
239 | ||
240 | /* reset device to read mode */ | |
241 | flash[0x0000] = 0xf0; | |
242 | __asm__ __volatile__("sync"); | |
243 | } | |
244 | ||
245 | return flash_info[0].size + flash_info[1].size; | |
246 | } | |
247 | ||
248 | #if 0 | |
249 | static void | |
250 | flash_get_offsets (ulong base, flash_info_t *info) | |
251 | { | |
252 | int i; | |
253 | ||
254 | /* set up sector start address table */ | |
8bde7f77 WD |
255 | if (info->flash_id & FLASH_MAN_SST) |
256 | { | |
257 | for (i = 0; i < info->sector_count; i++) | |
258 | info->start[i] = base + (i * 0x00010000); | |
259 | } | |
260 | else | |
fe8c2806 | 261 | if (info->flash_id & FLASH_BTYPE) { |
8bde7f77 WD |
262 | /* set sector offsets for bottom boot block type */ |
263 | info->start[0] = base + 0x00000000; | |
264 | info->start[1] = base + 0x00004000; | |
265 | info->start[2] = base + 0x00006000; | |
266 | info->start[3] = base + 0x00008000; | |
267 | for (i = 4; i < info->sector_count; i++) { | |
268 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
269 | } | |
fe8c2806 | 270 | } else { |
8bde7f77 WD |
271 | /* set sector offsets for top boot block type */ |
272 | i = info->sector_count - 1; | |
273 | info->start[i--] = base + info->size - 0x00004000; | |
274 | info->start[i--] = base + info->size - 0x00006000; | |
275 | info->start[i--] = base + info->size - 0x00008000; | |
276 | for (; i >= 0; i--) { | |
277 | info->start[i] = base + i * 0x00010000; | |
278 | } | |
fe8c2806 WD |
279 | } |
280 | ||
281 | } | |
282 | #endif /* 0 */ | |
283 | ||
284 | /*----------------------------------------------------------------------- | |
285 | */ | |
286 | void | |
287 | flash_print_info(flash_info_t *info) | |
288 | { | |
289 | static const char unk[] = "Unknown"; | |
290 | const char *mfct = unk, *type = unk; | |
291 | unsigned int i; | |
292 | ||
293 | if(info->flash_id != FLASH_UNKNOWN) | |
294 | { | |
295 | switch(info->flash_id & FLASH_VENDMASK) | |
296 | { | |
297 | case FLASH_MAN_AMD: mfct = "AMD"; break; | |
298 | case FLASH_MAN_FUJ: mfct = "FUJITSU"; break; | |
299 | case FLASH_MAN_STM: mfct = "STM"; break; | |
300 | case FLASH_MAN_SST: mfct = "SST"; break; | |
301 | case FLASH_MAN_BM: mfct = "Bright Microelectonics"; break; | |
302 | case FLASH_MAN_INTEL: mfct = "Intel"; break; | |
303 | } | |
304 | ||
305 | switch(info->flash_id & FLASH_TYPEMASK) | |
306 | { | |
307 | case FLASH_AM040: type = "AM29F040B (512K * 8, uniform sector size)"; break; | |
308 | case FLASH_AM400B: type = "AM29LV400B (4 Mbit, bottom boot sect)"; break; | |
309 | case FLASH_AM400T: type = "AM29LV400T (4 Mbit, top boot sector)"; break; | |
310 | case FLASH_AM800B: type = "AM29LV800B (8 Mbit, bottom boot sect)"; break; | |
311 | case FLASH_AM800T: type = "AM29LV800T (8 Mbit, top boot sector)"; break; | |
312 | case FLASH_AM160T: type = "AM29LV160T (16 Mbit, top boot sector)"; break; | |
313 | case FLASH_AM320B: type = "AM29LV320B (32 Mbit, bottom boot sect)"; break; | |
314 | case FLASH_AM320T: type = "AM29LV320T (32 Mbit, top boot sector)"; break; | |
315 | case FLASH_STM800AB: type = "M29W800AB (8 Mbit, bottom boot sect)"; break; | |
316 | case FLASH_SST800A: type = "SST39LF/VF800 (8 Mbit, uniform sector size)"; break; | |
317 | case FLASH_SST160A: type = "SST39LF/VF160 (16 Mbit, uniform sector size)"; break; | |
318 | } | |
319 | } | |
320 | ||
321 | printf( | |
322 | "\n Brand: %s Type: %s\n" | |
323 | " Size: %lu KB in %d Sectors\n", | |
324 | mfct, | |
325 | type, | |
326 | info->size >> 10, | |
327 | info->sector_count | |
328 | ); | |
329 | ||
330 | printf (" Sector Start Addresses:"); | |
331 | ||
332 | for (i = 0; i < info->sector_count; i++) | |
333 | { | |
334 | unsigned long size; | |
335 | unsigned int erased; | |
336 | unsigned long * flash = (unsigned long *) info->start[i]; | |
337 | ||
338 | /* | |
339 | * Check if whole sector is erased | |
340 | */ | |
341 | size = | |
342 | (i != (info->sector_count - 1)) ? | |
343 | (info->start[i + 1] - info->start[i]) >> 2 : | |
344 | (info->start[0] + info->size - info->start[i]) >> 2; | |
345 | ||
346 | for( | |
347 | flash = (unsigned long *) info->start[i], erased = 1; | |
348 | (flash != (unsigned long *) info->start[i] + size) && erased; | |
349 | flash++ | |
350 | ) | |
351 | erased = *flash == ~0x0UL; | |
352 | ||
353 | printf( | |
354 | "%s %08lX %s %s", | |
355 | (i % 5) ? "" : "\n ", | |
356 | info->start[i], | |
357 | erased ? "E" : " ", | |
358 | info->protect[i] ? "RO" : " " | |
359 | ); | |
360 | } | |
361 | ||
362 | puts("\n"); | |
363 | return; | |
364 | } | |
365 | ||
366 | #if 0 | |
367 | ||
368 | /* | |
369 | * The following code cannot be run from FLASH! | |
370 | */ | |
371 | ulong | |
372 | flash_get_size (vu_long *addr, flash_info_t *info) | |
373 | { | |
374 | short i; | |
375 | FLASH_WORD_SIZE value; | |
376 | ulong base = (ulong)addr; | |
8bde7f77 | 377 | volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr; |
fe8c2806 WD |
378 | |
379 | printf("flash_get_size: \n"); | |
380 | /* Write auto select command: read Manufacturer ID */ | |
381 | eieio(); | |
382 | addr2[ADDR0] = (FLASH_WORD_SIZE)0xAA; | |
383 | addr2[ADDR1] = (FLASH_WORD_SIZE)0x55; | |
384 | addr2[ADDR0] = (FLASH_WORD_SIZE)0x90; | |
385 | value = addr2[0]; | |
386 | ||
387 | switch (value) { | |
388 | case (FLASH_WORD_SIZE)AMD_MANUFACT: | |
8bde7f77 WD |
389 | info->flash_id = FLASH_MAN_AMD; |
390 | break; | |
fe8c2806 | 391 | case (FLASH_WORD_SIZE)FUJ_MANUFACT: |
8bde7f77 WD |
392 | info->flash_id = FLASH_MAN_FUJ; |
393 | break; | |
fe8c2806 | 394 | case (FLASH_WORD_SIZE)SST_MANUFACT: |
8bde7f77 WD |
395 | info->flash_id = FLASH_MAN_SST; |
396 | break; | |
fe8c2806 | 397 | default: |
8bde7f77 WD |
398 | info->flash_id = FLASH_UNKNOWN; |
399 | info->sector_count = 0; | |
400 | info->size = 0; | |
401 | return (0); /* no or unknown flash */ | |
fe8c2806 WD |
402 | } |
403 | printf("recognised manufacturer"); | |
404 | ||
405 | value = addr2[ADDR3]; /* device ID */ | |
8bde7f77 | 406 | debug ("\ndev_code=%x\n", value); |
fe8c2806 WD |
407 | |
408 | switch (value) { | |
409 | case (FLASH_WORD_SIZE)AMD_ID_LV400T: | |
8bde7f77 WD |
410 | info->flash_id += FLASH_AM400T; |
411 | info->sector_count = 11; | |
412 | info->size = 0x00080000; | |
413 | break; /* => 0.5 MB */ | |
fe8c2806 WD |
414 | |
415 | case (FLASH_WORD_SIZE)AMD_ID_LV400B: | |
8bde7f77 WD |
416 | info->flash_id += FLASH_AM400B; |
417 | info->sector_count = 11; | |
418 | info->size = 0x00080000; | |
419 | break; /* => 0.5 MB */ | |
fe8c2806 WD |
420 | |
421 | case (FLASH_WORD_SIZE)AMD_ID_LV800T: | |
8bde7f77 WD |
422 | info->flash_id += FLASH_AM800T; |
423 | info->sector_count = 19; | |
424 | info->size = 0x00100000; | |
425 | break; /* => 1 MB */ | |
fe8c2806 WD |
426 | |
427 | case (FLASH_WORD_SIZE)AMD_ID_LV800B: | |
8bde7f77 WD |
428 | info->flash_id += FLASH_AM800B; |
429 | info->sector_count = 19; | |
430 | info->size = 0x00100000; | |
431 | break; /* => 1 MB */ | |
fe8c2806 WD |
432 | |
433 | case (FLASH_WORD_SIZE)AMD_ID_LV160T: | |
8bde7f77 WD |
434 | info->flash_id += FLASH_AM160T; |
435 | info->sector_count = 35; | |
436 | info->size = 0x00200000; | |
437 | break; /* => 2 MB */ | |
fe8c2806 WD |
438 | |
439 | case (FLASH_WORD_SIZE)AMD_ID_LV160B: | |
8bde7f77 WD |
440 | info->flash_id += FLASH_AM160B; |
441 | info->sector_count = 35; | |
442 | info->size = 0x00200000; | |
443 | break; /* => 2 MB */ | |
fe8c2806 WD |
444 | |
445 | case (FLASH_WORD_SIZE)SST_ID_xF800A: | |
8bde7f77 WD |
446 | info->flash_id += FLASH_SST800A; |
447 | info->sector_count = 16; | |
448 | info->size = 0x00100000; | |
449 | break; /* => 1 MB */ | |
fe8c2806 WD |
450 | |
451 | case (FLASH_WORD_SIZE)SST_ID_xF160A: | |
8bde7f77 WD |
452 | info->flash_id += FLASH_SST160A; |
453 | info->sector_count = 32; | |
454 | info->size = 0x00200000; | |
455 | break; /* => 2 MB */ | |
fe8c2806 WD |
456 | |
457 | case (FLASH_WORD_SIZE)AMD_ID_F040B: | |
8bde7f77 WD |
458 | info->flash_id += FLASH_AM040; |
459 | info->sector_count = 8; | |
460 | info->size = 0x00080000; | |
461 | break; /* => 0.5 MB */ | |
fe8c2806 WD |
462 | |
463 | default: | |
8bde7f77 WD |
464 | info->flash_id = FLASH_UNKNOWN; |
465 | return (0); /* => no or unknown flash */ | |
fe8c2806 WD |
466 | |
467 | } | |
468 | ||
469 | printf("flash id %lx; sector count %x, size %lx\n", info->flash_id,info->sector_count,info->size); | |
470 | /* set up sector start address table */ | |
8bde7f77 WD |
471 | if (info->flash_id & FLASH_MAN_SST) |
472 | { | |
473 | for (i = 0; i < info->sector_count; i++) | |
474 | info->start[i] = base + (i * 0x00010000); | |
475 | } | |
476 | else | |
fe8c2806 | 477 | if (info->flash_id & FLASH_BTYPE) { |
8bde7f77 WD |
478 | /* set sector offsets for bottom boot block type */ |
479 | info->start[0] = base + 0x00000000; | |
480 | info->start[1] = base + 0x00004000; | |
481 | info->start[2] = base + 0x00006000; | |
482 | info->start[3] = base + 0x00008000; | |
483 | for (i = 4; i < info->sector_count; i++) { | |
484 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
485 | } | |
fe8c2806 | 486 | } else { |
8bde7f77 WD |
487 | /* set sector offsets for top boot block type */ |
488 | i = info->sector_count - 1; | |
489 | info->start[i--] = base + info->size - 0x00004000; | |
490 | info->start[i--] = base + info->size - 0x00006000; | |
491 | info->start[i--] = base + info->size - 0x00008000; | |
492 | for (; i >= 0; i--) { | |
493 | info->start[i] = base + i * 0x00010000; | |
494 | } | |
fe8c2806 WD |
495 | } |
496 | ||
497 | /* check for protected sectors */ | |
498 | for (i = 0; i < info->sector_count; i++) { | |
8bde7f77 WD |
499 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
500 | /* D0 = 1 if protected */ | |
501 | addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]); | |
502 | if (info->flash_id & FLASH_MAN_SST) | |
503 | info->protect[i] = 0; | |
504 | else | |
505 | info->protect[i] = addr2[2] & 1; | |
fe8c2806 WD |
506 | } |
507 | ||
508 | /* | |
509 | * Prevent writes to uninitialized FLASH. | |
510 | */ | |
511 | if (info->flash_id != FLASH_UNKNOWN) { | |
512 | addr2 = (FLASH_WORD_SIZE *)info->start[0]; | |
8bde7f77 | 513 | *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ |
fe8c2806 WD |
514 | } |
515 | ||
516 | return (info->size); | |
517 | } | |
518 | ||
519 | #endif | |
520 | ||
521 | ||
522 | int | |
523 | flash_erase(flash_info_t *info, int s_first, int s_last) | |
524 | { | |
525 | volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]); | |
526 | int flag, prot, sect, l_sect; | |
527 | ulong start, now, last; | |
528 | unsigned char sh8b; | |
529 | ||
530 | if ((s_first < 0) || (s_first > s_last)) { | |
8bde7f77 WD |
531 | if (info->flash_id == FLASH_UNKNOWN) { |
532 | printf ("- missing\n"); | |
533 | } else { | |
534 | printf ("- no sectors to erase\n"); | |
535 | } | |
536 | return 1; | |
fe8c2806 WD |
537 | } |
538 | ||
539 | if ((info->flash_id == FLASH_UNKNOWN) || | |
8bde7f77 WD |
540 | (info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) { |
541 | printf ("Can't erase unknown flash type - aborted\n"); | |
542 | return 1; | |
fe8c2806 WD |
543 | } |
544 | ||
545 | prot = 0; | |
546 | for (sect=s_first; sect<=s_last; ++sect) { | |
8bde7f77 WD |
547 | if (info->protect[sect]) { |
548 | prot++; | |
549 | } | |
fe8c2806 WD |
550 | } |
551 | ||
552 | if (prot) { | |
8bde7f77 WD |
553 | printf ("- Warning: %d protected sectors will not be erased!\n", |
554 | prot); | |
fe8c2806 | 555 | } else { |
8bde7f77 | 556 | printf ("\n"); |
fe8c2806 WD |
557 | } |
558 | ||
559 | l_sect = -1; | |
560 | ||
561 | /* Check the ROM CS */ | |
562 | if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)) | |
563 | sh8b = 3; | |
564 | else | |
565 | sh8b = 0; | |
566 | ||
567 | /* Disable interrupts which might cause a timeout here */ | |
568 | flag = disable_interrupts(); | |
569 | ||
570 | addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; | |
571 | addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; | |
572 | addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080; | |
573 | addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; | |
574 | addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; | |
575 | ||
576 | /* Start erase on unprotected sectors */ | |
577 | for (sect = s_first; sect<=s_last; sect++) { | |
8bde7f77 WD |
578 | if (info->protect[sect] == 0) { /* not protected */ |
579 | addr = (FLASH_WORD_SIZE *)(info->start[0] + ( | |
fe8c2806 | 580 | (info->start[sect] - info->start[0]) << sh8b)); |
8bde7f77 WD |
581 | if (info->flash_id & FLASH_MAN_SST) |
582 | { | |
583 | addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; | |
584 | addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; | |
585 | addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080; | |
586 | addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; | |
587 | addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; | |
588 | addr[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */ | |
589 | udelay(30000); /* wait 30 ms */ | |
590 | } | |
591 | else | |
592 | addr[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */ | |
593 | l_sect = sect; | |
594 | } | |
fe8c2806 WD |
595 | } |
596 | ||
597 | /* re-enable interrupts if necessary */ | |
598 | if (flag) | |
8bde7f77 | 599 | enable_interrupts(); |
fe8c2806 WD |
600 | |
601 | /* wait at least 80us - let's wait 1 ms */ | |
602 | udelay (1000); | |
603 | ||
604 | /* | |
605 | * We wait for the last triggered sector | |
606 | */ | |
607 | if (l_sect < 0) | |
8bde7f77 | 608 | goto DONE; |
fe8c2806 WD |
609 | |
610 | start = get_timer (0); | |
611 | last = start; | |
612 | addr = (FLASH_WORD_SIZE *)(info->start[0] + ( | |
613 | (info->start[l_sect] - info->start[0]) << sh8b)); | |
614 | while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) { | |
8bde7f77 WD |
615 | if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { |
616 | printf ("Timeout\n"); | |
617 | return 1; | |
618 | } | |
619 | /* show that we're waiting */ | |
620 | if ((now - last) > 1000) { /* every second */ | |
621 | serial_putc ('.'); | |
622 | last = now; | |
623 | } | |
fe8c2806 WD |
624 | } |
625 | ||
626 | DONE: | |
627 | /* reset to read mode */ | |
628 | addr = (FLASH_WORD_SIZE *)info->start[0]; | |
629 | addr[0] = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ | |
630 | ||
631 | printf (" done\n"); | |
632 | return 0; | |
633 | } | |
634 | ||
635 | /*----------------------------------------------------------------------- | |
636 | * Copy memory to flash, returns: | |
637 | * 0 - OK | |
638 | * 1 - write timeout | |
639 | * 2 - Flash not erased | |
640 | */ | |
641 | ||
642 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
643 | { | |
644 | ulong cp, wp, data; | |
645 | int i, l, rc; | |
646 | ||
647 | wp = (addr & ~3); /* get lower word aligned address */ | |
648 | ||
649 | /* | |
650 | * handle unaligned start bytes | |
651 | */ | |
652 | if ((l = addr - wp) != 0) { | |
8bde7f77 WD |
653 | data = 0; |
654 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
655 | data = (data << 8) | (*(uchar *)cp); | |
656 | } | |
657 | for (; i<4 && cnt>0; ++i) { | |
658 | data = (data << 8) | *src++; | |
659 | --cnt; | |
660 | ++cp; | |
661 | } | |
662 | for (; cnt==0 && i<4; ++i, ++cp) { | |
663 | data = (data << 8) | (*(uchar *)cp); | |
664 | } | |
665 | ||
666 | if ((rc = write_word(info, wp, data)) != 0) { | |
667 | return (rc); | |
668 | } | |
669 | wp += 4; | |
fe8c2806 WD |
670 | } |
671 | ||
672 | /* | |
673 | * handle word aligned part | |
674 | */ | |
675 | while (cnt >= 4) { | |
8bde7f77 WD |
676 | data = 0; |
677 | for (i=0; i<4; ++i) { | |
678 | data = (data << 8) | *src++; | |
679 | } | |
680 | if ((rc = write_word(info, wp, data)) != 0) { | |
681 | return (rc); | |
682 | } | |
683 | wp += 4; | |
684 | cnt -= 4; | |
fe8c2806 WD |
685 | } |
686 | ||
687 | if (cnt == 0) { | |
8bde7f77 | 688 | return (0); |
fe8c2806 WD |
689 | } |
690 | ||
691 | /* | |
692 | * handle unaligned tail bytes | |
693 | */ | |
694 | data = 0; | |
695 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
8bde7f77 WD |
696 | data = (data << 8) | *src++; |
697 | --cnt; | |
fe8c2806 WD |
698 | } |
699 | for (; i<4; ++i, ++cp) { | |
8bde7f77 | 700 | data = (data << 8) | (*(uchar *)cp); |
fe8c2806 WD |
701 | } |
702 | ||
703 | return (write_word(info, wp, data)); | |
704 | } | |
705 | ||
706 | /*----------------------------------------------------------------------- | |
707 | * Write a word to Flash, returns: | |
708 | * 0 - OK | |
709 | * 1 - write timeout | |
710 | * 2 - Flash not erased | |
711 | */ | |
712 | static int write_word (flash_info_t *info, ulong dest, ulong data) | |
713 | { | |
8bde7f77 WD |
714 | volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)info->start[0]; |
715 | volatile FLASH_WORD_SIZE *dest2; | |
716 | volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data; | |
fe8c2806 WD |
717 | ulong start; |
718 | int flag; | |
8bde7f77 | 719 | int i; |
fe8c2806 WD |
720 | unsigned char sh8b; |
721 | ||
722 | /* Check the ROM CS */ | |
723 | if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)) | |
724 | sh8b = 3; | |
725 | else | |
726 | sh8b = 0; | |
727 | ||
728 | dest2 = (FLASH_WORD_SIZE *)(((dest - info->start[0]) << sh8b) + | |
729 | info->start[0]); | |
730 | ||
731 | /* Check if Flash is (sufficiently) erased */ | |
732 | if ((*dest2 & (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) { | |
8bde7f77 | 733 | return (2); |
fe8c2806 WD |
734 | } |
735 | /* Disable interrupts which might cause a timeout here */ | |
736 | flag = disable_interrupts(); | |
737 | ||
8bde7f77 WD |
738 | for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++) |
739 | { | |
740 | addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; | |
741 | addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; | |
742 | addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00A000A0; | |
743 | ||
744 | dest2[i << sh8b] = data2[i]; | |
745 | ||
746 | /* re-enable interrupts if necessary */ | |
747 | if (flag) | |
748 | enable_interrupts(); | |
749 | ||
750 | /* data polling for D7 */ | |
751 | start = get_timer (0); | |
752 | while ((dest2[i << sh8b] & (FLASH_WORD_SIZE)0x00800080) != | |
753 | (data2[i] & (FLASH_WORD_SIZE)0x00800080)) { | |
754 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { | |
755 | return (1); | |
756 | } | |
757 | } | |
758 | } | |
fe8c2806 WD |
759 | |
760 | return (0); | |
761 | } | |
762 | ||
763 | /*----------------------------------------------------------------------- | |
764 | */ |