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7ebf7443 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
7ebf7443 WD |
6 | */ |
7 | ||
8 | /* | |
9 | * flash.c - flash support for the 512k, 8bit boot flash on the GEVB | |
10 | * most of this file was based on the existing U-Boot | |
11 | * flash drivers. | |
12 | */ | |
13 | ||
14 | #include <common.h> | |
15 | #include <mpc8xx.h> | |
16 | #include <galileo/gt64260R.h> | |
17 | #include <galileo/memory.h> | |
18 | #include "intel_flash.h" | |
19 | ||
20 | #define FLASH_ROM 0xFFFD /* unknown flash type */ | |
21 | #define FLASH_RAM 0xFFFE /* unknown flash type */ | |
22 | #define FLASH_MAN_UNKNOWN 0xFFFF0000 | |
23 | ||
24 | /* #define DEBUG */ | |
25 | /* #define FLASH_ID_OVERRIDE */ /* Hack to set type to 040B if ROM emulator is installed. | |
26 | * Can be used to program a ROM in circuit if a programmer | |
27 | * is not available by swapping the rom out. */ | |
28 | ||
29 | /* Intel flash commands */ | |
30 | int flash_erase_intel(flash_info_t *info, int s_first, int s_last); | |
31 | int write_word_intel(bank_addr_t addr, bank_word_t value); | |
32 | ||
6d0f6bcf | 33 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
7ebf7443 WD |
34 | |
35 | /*----------------------------------------------------------------------- | |
36 | * Functions | |
37 | */ | |
38 | static ulong flash_get_size (int portwidth, vu_long *addr, flash_info_t *info); | |
39 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
40 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
41 | ||
42 | /*----------------------------------------------------------------------- | |
43 | */ | |
44 | ||
45 | unsigned long | |
46 | flash_init (void) | |
47 | { | |
48 | unsigned int i; | |
49 | unsigned long size_b0 = 0, size_b1 = 0; | |
50 | unsigned long base, flash_size; | |
51 | ||
52 | /* Init: no FLASHes known */ | |
6d0f6bcf | 53 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
7ebf7443 WD |
54 | flash_info[i].flash_id = FLASH_UNKNOWN; |
55 | } | |
56 | ||
57 | /* the boot flash */ | |
6d0f6bcf JCPV |
58 | base = CONFIG_SYS_FLASH_BASE; |
59 | #ifndef CONFIG_SYS_BOOT_FLASH_WIDTH | |
60 | #define CONFIG_SYS_BOOT_FLASH_WIDTH 1 | |
12f34241 | 61 | #endif |
6d0f6bcf | 62 | size_b0 = flash_get_size(CONFIG_SYS_BOOT_FLASH_WIDTH, (vu_long *)base, |
93e14596 | 63 | &flash_info[0]); |
7ebf7443 | 64 | |
2d5b561e WD |
65 | #ifndef CONFIG_P3G4 |
66 | printf("["); | |
67 | print_size (size_b0, ""); | |
68 | printf("@%08lX] ", base); | |
69 | #endif | |
7ebf7443 WD |
70 | |
71 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
72 | printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", | |
73 | base, size_b0, size_b0<<20); | |
74 | } | |
75 | ||
6d0f6bcf JCPV |
76 | base = memoryGetDeviceBaseAddress(CONFIG_SYS_EXTRA_FLASH_DEVICE); |
77 | for(i=1;i<CONFIG_SYS_MAX_FLASH_BANKS;i++) { | |
78 | unsigned long size = flash_get_size(CONFIG_SYS_EXTRA_FLASH_WIDTH, (vu_long *)base, &flash_info[i]); | |
7ebf7443 | 79 | |
2d5b561e WD |
80 | #ifndef CONFIG_P3G4 |
81 | printf("["); | |
82 | print_size (size, ""); | |
5fa66df6 | 83 | printf("@%08lX] ", base); |
2d5b561e | 84 | #endif |
7ebf7443 WD |
85 | |
86 | if (flash_info[i].flash_id == FLASH_UNKNOWN) { | |
87 | if(i==1) { | |
88 | printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", | |
89 | base, size_b1, size_b1<<20); | |
90 | } | |
91 | break; | |
92 | } | |
93 | size_b1+=size; | |
94 | base+=size; | |
95 | } | |
96 | ||
6d0f6bcf | 97 | #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
12f34241 WD |
98 | /* monitor protection ON by default */ |
99 | flash_protect(FLAG_PROTECT_SET, | |
93e14596 WD |
100 | CONFIG_SYS_MONITOR_BASE, |
101 | CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, | |
102 | flash_get_info(CONFIG_SYS_MONITOR_BASE)); | |
12f34241 WD |
103 | #endif |
104 | ||
5a1aceb0 | 105 | #ifdef CONFIG_ENV_IS_IN_FLASH |
12f34241 WD |
106 | /* ENV protection ON by default */ |
107 | flash_protect(FLAG_PROTECT_SET, | |
93e14596 WD |
108 | CONFIG_ENV_ADDR, |
109 | CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, | |
110 | flash_get_info(CONFIG_ENV_ADDR)); | |
12f34241 WD |
111 | #endif |
112 | ||
7ebf7443 WD |
113 | flash_size = size_b0 + size_b1; |
114 | return flash_size; | |
115 | } | |
116 | ||
117 | /*----------------------------------------------------------------------- | |
118 | */ | |
119 | static void | |
120 | flash_get_offsets (ulong base, flash_info_t *info) | |
121 | { | |
122 | int i; | |
123 | int sector_size; | |
124 | ||
125 | if(!info->sector_count) return; | |
126 | ||
127 | /* set up sector start address table */ | |
128 | switch(info->flash_id & FLASH_TYPEMASK) { | |
129 | case FLASH_AM040: | |
130 | case FLASH_28F128J3A: | |
131 | case FLASH_28F640J3A: | |
132 | case FLASH_RAM: | |
133 | /* this chip has uniformly spaced sectors */ | |
134 | sector_size=info->size/info->sector_count; | |
135 | for (i = 0; i < info->sector_count; i++) | |
136 | info->start[i] = base + (i * sector_size); | |
137 | break; | |
138 | default: | |
139 | if (info->flash_id & FLASH_BTYPE) { | |
140 | /* set sector offsets for bottom boot block type */ | |
141 | info->start[0] = base + 0x00000000; | |
142 | info->start[1] = base + 0x00008000; | |
143 | info->start[2] = base + 0x0000C000; | |
144 | info->start[3] = base + 0x00010000; | |
145 | for (i = 4; i < info->sector_count; i++) { | |
146 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
147 | } | |
148 | } else { | |
149 | /* set sector offsets for top boot block type */ | |
150 | i = info->sector_count - 1; | |
151 | info->start[i--] = base + info->size - 0x00008000; | |
152 | info->start[i--] = base + info->size - 0x0000C000; | |
153 | info->start[i--] = base + info->size - 0x00010000; | |
154 | for (; i >= 0; i--) { | |
155 | info->start[i] = base + i * 0x00020000; | |
156 | } | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
12f34241 WD |
161 | /*----------------------------------------------------------------------- |
162 | */ | |
163 | ||
b8845abd | 164 | flash_info_t *flash_get_info(ulong base) |
12f34241 WD |
165 | { |
166 | int i; | |
167 | flash_info_t * info; | |
168 | ||
6d0f6bcf | 169 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i ++) { |
12f34241 WD |
170 | info = & flash_info[i]; |
171 | if (info->start[0] <= base && base <= info->start[0] + info->size - 1) | |
172 | break; | |
173 | } | |
174 | ||
6d0f6bcf | 175 | return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info; |
12f34241 WD |
176 | } |
177 | ||
7ebf7443 WD |
178 | /*----------------------------------------------------------------------- |
179 | */ | |
180 | void | |
181 | flash_print_info (flash_info_t *info) | |
182 | { | |
183 | int i; | |
184 | ||
185 | if (info->flash_id == FLASH_UNKNOWN) { | |
186 | printf ("missing or unknown FLASH type\n"); | |
187 | return; | |
188 | } | |
189 | ||
190 | switch (info->flash_id & FLASH_VENDMASK) { | |
191 | case FLASH_MAN_AMD: printf ("AMD "); break; | |
192 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; | |
193 | case FLASH_MAN_INTEL: printf ("INTEL "); break; | |
194 | default: printf ("Unknown Vendor "); break; | |
195 | } | |
196 | ||
197 | switch (info->flash_id & FLASH_TYPEMASK) { | |
198 | case FLASH_AM040: | |
199 | printf ("AM29LV040B (4 Mbit, bottom boot sect)\n"); | |
200 | break; | |
201 | case FLASH_AM400B: | |
202 | printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
203 | break; | |
204 | case FLASH_AM400T: | |
205 | printf ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
206 | break; | |
207 | case FLASH_AM800B: | |
208 | printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
209 | break; | |
210 | case FLASH_AM800T: | |
211 | printf ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
212 | break; | |
213 | case FLASH_AM160B: | |
214 | printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
215 | break; | |
216 | case FLASH_AM160T: | |
217 | printf ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
218 | break; | |
219 | case FLASH_AM320B: | |
220 | printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
221 | break; | |
222 | case FLASH_AM320T: | |
223 | printf ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
224 | break; | |
225 | case FLASH_28F640J3A: | |
226 | printf ("28F640J3A (64 Mbit)\n"); | |
227 | break; | |
228 | case FLASH_28F128J3A: | |
229 | printf ("28F128J3A (128 Mbit)\n"); | |
230 | break; | |
231 | case FLASH_ROM: | |
232 | printf ("ROM\n"); | |
233 | break; | |
234 | case FLASH_RAM: | |
235 | printf ("RAM\n"); | |
236 | break; | |
237 | default: | |
238 | printf ("Unknown Chip Type\n"); | |
239 | break; | |
240 | } | |
241 | ||
242 | puts (" Size: "); | |
243 | print_size (info->size, ""); | |
244 | printf (" in %d Sectors\n", info->sector_count); | |
245 | ||
246 | printf (" Sector Start Addresses:"); | |
247 | for (i=0; i<info->sector_count; ++i) { | |
248 | if ((i % 5) == 0) | |
249 | printf ("\n "); | |
250 | printf (" %08lX%s", | |
251 | info->start[i], | |
252 | info->protect[i] ? " (RO)" : " " | |
253 | ); | |
254 | } | |
255 | printf ("\n"); | |
256 | return; | |
257 | } | |
258 | ||
259 | /*----------------------------------------------------------------------- | |
260 | */ | |
261 | ||
262 | ||
263 | /*----------------------------------------------------------------------- | |
264 | */ | |
265 | ||
266 | /* | |
267 | * The following code cannot be run from FLASH! | |
268 | */ | |
269 | ||
270 | static inline void flash_cmd(int width, volatile unsigned char *addr, int offset, unsigned char cmd) | |
271 | { | |
8bde7f77 WD |
272 | /* supports 1x8, 1x16, and 2x16 */ |
273 | /* 2x8 and 4x8 are not supported */ | |
7ebf7443 WD |
274 | if(width==4) { |
275 | /* assuming chips are in 16 bit mode */ | |
276 | /* 2x16 */ | |
277 | unsigned long cmd32=(cmd<<16)|cmd; | |
278 | *(volatile unsigned long *)(addr+offset*2)=cmd32; | |
12f34241 WD |
279 | } else if (width == 2) { |
280 | /* 1x16 */ | |
281 | *(volatile unsigned short *)((unsigned short*)addr+offset)=cmd; | |
7ebf7443 | 282 | } else { |
12f34241 | 283 | /* 1x8 */ |
7ebf7443 WD |
284 | *(volatile unsigned char *)(addr+offset)=cmd; |
285 | } | |
286 | } | |
287 | ||
288 | static ulong | |
289 | flash_get_size (int portwidth, vu_long *addr, flash_info_t *info) | |
290 | { | |
291 | short i; | |
292 | volatile unsigned char *caddr = (unsigned char *)addr; | |
293 | volatile unsigned short *saddr = (unsigned short *)addr; | |
294 | volatile unsigned long *laddr = (unsigned long *)addr; | |
295 | char old[2], save; | |
296 | ulong id, manu, base = (ulong)addr; | |
297 | ||
298 | info->portwidth=portwidth; | |
299 | ||
300 | save = *caddr; | |
301 | ||
302 | flash_cmd(portwidth,caddr,0,0xf0); | |
303 | flash_cmd(portwidth,caddr,0,0xf0); | |
304 | ||
305 | udelay(10); | |
306 | ||
307 | old[0] = caddr[0]; | |
308 | old[1] = caddr[1]; | |
309 | ||
310 | ||
311 | if(old[0]!=0xf0) { | |
312 | flash_cmd(portwidth,caddr,0,0xf0); | |
313 | flash_cmd(portwidth,caddr,0,0xf0); | |
314 | ||
315 | udelay(10); | |
316 | ||
317 | if(*caddr==0xf0) { | |
318 | /* this area is ROM */ | |
319 | *caddr=save; | |
320 | #ifndef FLASH_ID_OVERRIDE | |
321 | info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN; | |
322 | info->sector_count = 8; | |
323 | info->size = 0x80000; | |
324 | #else | |
325 | info->flash_id = FLASH_MAN_AMD + FLASH_AM040; | |
326 | info->sector_count = 8; | |
327 | info->size = 0x80000; | |
328 | info->chipwidth=1; | |
329 | #endif | |
330 | flash_get_offsets(base, info); | |
331 | return info->size; | |
332 | } | |
333 | } else { | |
334 | *caddr=0; | |
335 | ||
336 | udelay(10); | |
337 | ||
338 | if(*caddr==0) { | |
339 | /* this area is RAM */ | |
340 | *caddr=save; | |
341 | info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN; | |
342 | info->sector_count = 8; | |
343 | info->size = 0x80000; | |
344 | flash_get_offsets(base, info); | |
345 | return info->size; | |
346 | } | |
347 | flash_cmd(portwidth,caddr,0,0xf0); | |
348 | ||
349 | udelay(10); | |
350 | } | |
351 | ||
352 | /* Write auto select command: read Manufacturer ID */ | |
353 | flash_cmd(portwidth,caddr,0x555,0xAA); | |
354 | flash_cmd(portwidth,caddr,0x2AA,0x55); | |
355 | flash_cmd(portwidth,caddr,0x555,0x90); | |
356 | ||
357 | udelay(10); | |
358 | ||
359 | if ((caddr[0] == old[0]) && | |
360 | (caddr[1] == old[1])) { | |
361 | ||
362 | /* this area is ROM */ | |
363 | #ifndef FLASH_ID_OVERRIDE | |
364 | info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN; | |
365 | info->sector_count = 8; | |
366 | info->size = 0x80000; | |
367 | #else | |
368 | info->flash_id = FLASH_MAN_AMD + FLASH_AM040; | |
369 | info->sector_count = 8; | |
370 | info->size = 0x80000; | |
371 | info->chipwidth=1; | |
372 | #endif | |
373 | flash_get_offsets(base, info); | |
374 | return info->size; | |
375 | #ifdef DEBUG | |
376 | } else { | |
377 | printf("%px%d: %02x:%02x -> %02x:%02x\n", | |
378 | caddr, portwidth, old[0], old[1], | |
379 | caddr[0], caddr[1]); | |
380 | #endif | |
381 | } | |
382 | ||
383 | switch(portwidth) { | |
384 | case 1: | |
385 | manu = caddr[0]; | |
386 | manu |= manu<<16; | |
387 | id = caddr[1]; | |
388 | break; | |
389 | case 2: | |
390 | manu = saddr[0]; | |
391 | manu |= manu<<16; | |
392 | id = saddr[1]; | |
393 | id |= id<<16; | |
394 | break; | |
395 | case 4: | |
396 | manu = laddr[0]; | |
397 | id = laddr[1]; | |
398 | break; | |
399 | default: | |
400 | id = manu = -1; | |
401 | break; | |
402 | } | |
403 | ||
404 | #ifdef DEBUG | |
405 | printf("\n%08lx:%08lx:%08lx\n", base, manu, id); | |
406 | printf("%08lx %08lx %08lx %08lx\n", | |
407 | laddr[0],laddr[1],laddr[2],laddr[3]); | |
408 | #endif | |
409 | ||
410 | switch (manu) { | |
411 | case AMD_MANUFACT: | |
412 | info->flash_id = FLASH_MAN_AMD; | |
413 | break; | |
414 | case FUJ_MANUFACT: | |
415 | info->flash_id = FLASH_MAN_FUJ; | |
416 | break; | |
417 | case INTEL_MANUFACT: | |
418 | info->flash_id = FLASH_MAN_INTEL; | |
419 | break; | |
420 | default: | |
421 | printf("Unknown Mfr [%08lx]:%08lx\n", manu, id); | |
422 | info->flash_id = FLASH_UNKNOWN; | |
423 | info->sector_count = 0; | |
424 | info->size = 0; | |
425 | return (0); /* no or unknown flash */ | |
426 | } | |
427 | ||
428 | switch (id) { | |
429 | case AMD_ID_LV400T: | |
430 | info->flash_id += FLASH_AM400T; | |
431 | info->sector_count = 11; | |
432 | info->size = 0x00100000; | |
433 | info->chipwidth=1; | |
434 | break; /* => 1 MB */ | |
435 | ||
436 | case AMD_ID_LV400B: | |
437 | info->flash_id += FLASH_AM400B; | |
438 | info->sector_count = 11; | |
439 | info->size = 0x00100000; | |
440 | info->chipwidth=1; | |
441 | break; /* => 1 MB */ | |
442 | ||
443 | case AMD_ID_LV800T: | |
444 | info->flash_id += FLASH_AM800T; | |
445 | info->sector_count = 19; | |
446 | info->size = 0x00200000; | |
447 | info->chipwidth=1; | |
448 | break; /* => 2 MB */ | |
449 | ||
450 | case AMD_ID_LV800B: | |
451 | info->flash_id += FLASH_AM800B; | |
452 | info->sector_count = 19; | |
453 | info->size = 0x00200000; | |
454 | info->chipwidth=1; | |
455 | break; /* => 2 MB */ | |
456 | ||
457 | case AMD_ID_LV160T: | |
458 | info->flash_id += FLASH_AM160T; | |
459 | info->sector_count = 35; | |
460 | info->size = 0x00400000; | |
461 | info->chipwidth=1; | |
462 | break; /* => 4 MB */ | |
463 | ||
464 | case AMD_ID_LV160B: | |
465 | info->flash_id += FLASH_AM160B; | |
466 | info->sector_count = 35; | |
467 | info->size = 0x00400000; | |
468 | info->chipwidth=1; | |
469 | break; /* => 4 MB */ | |
470 | #if 0 /* enable when device IDs are available */ | |
471 | case AMD_ID_LV320T: | |
472 | info->flash_id += FLASH_AM320T; | |
473 | info->sector_count = 67; | |
474 | info->size = 0x00800000; | |
475 | break; /* => 8 MB */ | |
476 | ||
477 | case AMD_ID_LV320B: | |
478 | info->flash_id += FLASH_AM320B; | |
479 | info->sector_count = 67; | |
480 | info->size = 0x00800000; | |
481 | break; /* => 8 MB */ | |
482 | #endif | |
483 | case AMD_ID_LV040B: | |
484 | info->flash_id += FLASH_AM040; | |
485 | info->sector_count = 8; | |
486 | info->size = 0x80000; | |
487 | info->chipwidth=1; | |
488 | break; | |
489 | ||
490 | case INTEL_ID_28F640J3A: | |
491 | info->flash_id += FLASH_28F640J3A; | |
492 | info->sector_count = 64; | |
493 | info->size = 128*1024 * 64; /* 128kbytes x 64 blocks */ | |
494 | info->chipwidth=2; | |
495 | if(portwidth==4) info->size*=2; /* 2x16 */ | |
496 | break; | |
497 | ||
498 | case INTEL_ID_28F128J3A: | |
499 | info->flash_id += FLASH_28F128J3A; | |
500 | info->sector_count = 128; | |
501 | info->size = 128*1024 * 128; /* 128kbytes x 128 blocks */ | |
502 | info->chipwidth=2; | |
503 | if(portwidth==4) info->size*=2; /* 2x16 */ | |
504 | break; | |
505 | ||
506 | default: | |
507 | printf("Unknown id %lx:[%lx]\n", manu, id); | |
508 | info->flash_id = FLASH_UNKNOWN; | |
509 | info->chipwidth=1; | |
510 | return (0); /* => no or unknown flash */ | |
511 | ||
512 | } | |
513 | ||
514 | flash_get_offsets(base, info); | |
515 | ||
516 | #if 0 | |
517 | /* set up sector start address table */ | |
518 | if (info->flash_id & FLASH_AM040) { | |
519 | /* this chip has uniformly spaced sectors */ | |
520 | for (i = 0; i < info->sector_count; i++) | |
521 | info->start[i] = base + (i * 0x00010000); | |
522 | ||
523 | } else if (info->flash_id & FLASH_BTYPE) { | |
524 | /* set sector offsets for bottom boot block type */ | |
525 | info->start[0] = base + 0x00000000; | |
526 | info->start[1] = base + 0x00008000; | |
527 | info->start[2] = base + 0x0000C000; | |
528 | info->start[3] = base + 0x00010000; | |
529 | for (i = 4; i < info->sector_count; i++) { | |
530 | info->start[i] = base + (i * 0x00020000) - 0x00060000; | |
531 | } | |
532 | } else { | |
533 | /* set sector offsets for top boot block type */ | |
534 | i = info->sector_count - 1; | |
535 | info->start[i--] = base + info->size - 0x00008000; | |
536 | info->start[i--] = base + info->size - 0x0000C000; | |
537 | info->start[i--] = base + info->size - 0x00010000; | |
538 | for (; i >= 0; i--) { | |
539 | info->start[i] = base + i * 0x00020000; | |
540 | } | |
541 | } | |
542 | #endif | |
543 | ||
544 | /* check for protected sectors */ | |
545 | for (i = 0; i < info->sector_count; i++) { | |
546 | /* read sector protection at sector address, (A7 .. A0)=0x02 */ | |
547 | /* D0 = 1 if protected */ | |
548 | caddr = (volatile unsigned char *)(info->start[i]); | |
549 | saddr = (volatile unsigned short *)(info->start[i]); | |
550 | laddr = (volatile unsigned long *)(info->start[i]); | |
551 | if(portwidth==1) | |
552 | info->protect[i] = caddr[2] & 1; | |
553 | else if(portwidth==2) | |
554 | info->protect[i] = saddr[2] & 1; | |
555 | else | |
556 | info->protect[i] = laddr[2] & 1; | |
557 | } | |
558 | ||
559 | /* | |
560 | * Prevent writes to uninitialized FLASH. | |
561 | */ | |
562 | if (info->flash_id != FLASH_UNKNOWN) { | |
563 | caddr = (volatile unsigned char *)info->start[0]; | |
564 | ||
565 | flash_cmd(portwidth,caddr,0,0xF0); /* reset bank */ | |
566 | } | |
567 | ||
568 | return (info->size); | |
569 | } | |
570 | ||
571 | /* TODO: 2x16 unsupported */ | |
572 | int | |
573 | flash_erase (flash_info_t *info, int s_first, int s_last) | |
574 | { | |
77ddac94 | 575 | volatile unsigned char *addr = (uchar *)(info->start[0]); |
7ebf7443 WD |
576 | int flag, prot, sect, l_sect; |
577 | ulong start, now, last; | |
578 | ||
579 | /* TODO: 2x16 unsupported */ | |
580 | if(info->portwidth==4) return 1; | |
581 | ||
582 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1; | |
583 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { | |
584 | for (sect = s_first; sect<=s_last; sect++) { | |
585 | int sector_size=info->size/info->sector_count; | |
77ddac94 | 586 | addr = (uchar *)(info->start[sect]); |
7ebf7443 WD |
587 | memset((void *)addr, 0, sector_size); |
588 | } | |
589 | return 0; | |
590 | } | |
591 | ||
592 | if ((s_first < 0) || (s_first > s_last)) { | |
593 | if (info->flash_id == FLASH_UNKNOWN) { | |
594 | printf ("- missing\n"); | |
595 | } else { | |
596 | printf ("- no sectors to erase\n"); | |
597 | } | |
598 | return 1; | |
599 | } | |
600 | ||
601 | if ((info->flash_id&FLASH_VENDMASK) == FLASH_MAN_INTEL) { | |
602 | return flash_erase_intel(info, | |
603 | (unsigned short)s_first, | |
604 | (unsigned short)s_last); | |
605 | } | |
606 | ||
607 | #if 0 | |
608 | if ((info->flash_id == FLASH_UNKNOWN) || | |
609 | (info->flash_id > FLASH_AMD_COMP)) { | |
610 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
611 | info->flash_id); | |
612 | return 1; | |
613 | } | |
614 | #endif | |
615 | ||
616 | prot = 0; | |
617 | for (sect=s_first; sect<=s_last; ++sect) { | |
618 | if (info->protect[sect]) { | |
619 | prot++; | |
620 | } | |
621 | } | |
622 | ||
623 | if (prot) { | |
624 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
625 | prot); | |
626 | } else { | |
627 | printf ("\n"); | |
628 | } | |
629 | ||
630 | l_sect = -1; | |
631 | ||
632 | /* Disable interrupts which might cause a timeout here */ | |
633 | flag = disable_interrupts(); | |
634 | ||
635 | flash_cmd(info->portwidth,addr,0x555,0xAA); | |
636 | flash_cmd(info->portwidth,addr,0x2AA,0x55); | |
637 | flash_cmd(info->portwidth,addr,0x555,0x80); | |
638 | flash_cmd(info->portwidth,addr,0x555,0xAA); | |
639 | flash_cmd(info->portwidth,addr,0x2AA,0x55); | |
640 | ||
641 | /* Start erase on unprotected sectors */ | |
642 | for (sect = s_first; sect<=s_last; sect++) { | |
643 | if (info->protect[sect] == 0) { /* not protected */ | |
77ddac94 | 644 | addr = (uchar *)(info->start[sect]); |
7ebf7443 WD |
645 | flash_cmd(info->portwidth,addr,0,0x30); |
646 | l_sect = sect; | |
647 | } | |
648 | } | |
649 | ||
650 | /* re-enable interrupts if necessary */ | |
651 | if (flag) | |
652 | enable_interrupts(); | |
653 | ||
654 | /* wait at least 80us - let's wait 1 ms */ | |
655 | udelay (1000); | |
656 | ||
657 | /* | |
658 | * We wait for the last triggered sector | |
659 | */ | |
660 | if (l_sect < 0) | |
661 | goto DONE; | |
662 | ||
663 | start = get_timer (0); | |
664 | last = start; | |
665 | addr = (volatile unsigned char *)(info->start[l_sect]); | |
666 | /* broken for 2x16: TODO */ | |
667 | while ((addr[0] & 0x80) != 0x80) { | |
6d0f6bcf | 668 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
7ebf7443 WD |
669 | printf ("Timeout\n"); |
670 | return 1; | |
671 | } | |
672 | /* show that we're waiting */ | |
673 | if ((now - last) > 1000) { /* every second */ | |
674 | putc ('.'); | |
675 | last = now; | |
676 | } | |
677 | } | |
678 | ||
679 | DONE: | |
680 | /* reset to read mode */ | |
681 | addr = (volatile unsigned char *)info->start[0]; | |
682 | flash_cmd(info->portwidth,addr,0,0xf0); | |
683 | flash_cmd(info->portwidth,addr,0,0xf0); | |
684 | ||
685 | printf (" done\n"); | |
686 | return 0; | |
687 | } | |
688 | ||
689 | /*----------------------------------------------------------------------- | |
690 | * Copy memory to flash, returns: | |
691 | * 0 - OK | |
692 | * 1 - write timeout | |
693 | * 2 - Flash not erased | |
694 | */ | |
695 | ||
696 | /* broken for 2x16: TODO */ | |
697 | int | |
698 | write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
699 | { | |
700 | ulong cp, wp, data; | |
701 | int i, l, rc; | |
702 | ||
703 | if(info->portwidth==4) return 1; | |
704 | ||
705 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 0; | |
706 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { | |
707 | memcpy((void *)addr, src, cnt); | |
708 | return 0; | |
709 | } | |
710 | ||
711 | wp = (addr & ~3); /* get lower word aligned address */ | |
712 | ||
713 | /* | |
714 | * handle unaligned start bytes | |
715 | */ | |
716 | if ((l = addr - wp) != 0) { | |
717 | data = 0; | |
718 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
719 | data = (data << 8) | (*(uchar *)cp); | |
720 | } | |
721 | for (; i<4 && cnt>0; ++i) { | |
722 | data = (data << 8) | *src++; | |
723 | --cnt; | |
724 | ++cp; | |
725 | } | |
726 | for (; cnt==0 && i<4; ++i, ++cp) { | |
727 | data = (data << 8) | (*(uchar *)cp); | |
728 | } | |
729 | ||
730 | if ((rc = write_word(info, wp, data)) != 0) { | |
731 | return (rc); | |
732 | } | |
733 | wp += 4; | |
734 | } | |
735 | ||
736 | /* | |
737 | * handle word aligned part | |
738 | */ | |
739 | while (cnt >= 4) { | |
740 | data = 0; | |
741 | for (i=0; i<4; ++i) { | |
742 | data = (data << 8) | *src++; | |
743 | } | |
744 | if ((rc = write_word(info, wp, data)) != 0) { | |
745 | return (rc); | |
746 | } | |
747 | wp += 4; | |
748 | cnt -= 4; | |
749 | } | |
750 | ||
751 | if (cnt == 0) { | |
752 | return (0); | |
753 | } | |
754 | ||
755 | /* | |
756 | * handle unaligned tail bytes | |
757 | */ | |
758 | data = 0; | |
759 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
760 | data = (data << 8) | *src++; | |
761 | --cnt; | |
762 | } | |
763 | for (; i<4; ++i, ++cp) { | |
764 | data = (data << 8) | (*(uchar *)cp); | |
765 | } | |
766 | ||
767 | return (write_word(info, wp, data)); | |
768 | } | |
769 | ||
770 | /*----------------------------------------------------------------------- | |
771 | * Write a word to Flash, returns: | |
772 | * 0 - OK | |
773 | * 1 - write timeout | |
774 | * 2 - Flash not erased | |
775 | */ | |
776 | /* broken for 2x16: TODO */ | |
777 | static int | |
778 | write_word (flash_info_t *info, ulong dest, ulong data) | |
779 | { | |
77ddac94 | 780 | volatile unsigned char *addr = (uchar *)(info->start[0]); |
7ebf7443 WD |
781 | ulong start; |
782 | int flag, i; | |
783 | ||
784 | if(info->portwidth==4) return 1; | |
785 | ||
786 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1; | |
787 | if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { | |
788 | *(unsigned long *)dest=data; | |
789 | return 0; | |
790 | } | |
791 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { | |
792 | unsigned short low = data & 0xffff; | |
793 | unsigned short hi = (data >> 16) & 0xffff; | |
794 | int ret = write_word_intel((bank_addr_t)dest, hi); | |
795 | ||
796 | if (!ret) ret = write_word_intel((bank_addr_t)(dest+2), low); | |
797 | ||
798 | return ret; | |
799 | } | |
800 | ||
801 | /* Check if Flash is (sufficiently) erased */ | |
802 | if ((*((vu_long *)dest) & data) != data) { | |
803 | return (2); | |
804 | } | |
805 | /* Disable interrupts which might cause a timeout here */ | |
806 | flag = disable_interrupts(); | |
807 | ||
808 | /* first, perform an unlock bypass command to speed up flash writes */ | |
809 | addr[0x555] = 0xAA; | |
810 | addr[0x2AA] = 0x55; | |
811 | addr[0x555] = 0x20; | |
812 | ||
813 | /* write each byte out */ | |
814 | for (i = 0; i < 4; i++) { | |
815 | char *data_ch = (char *)&data; | |
816 | addr[0] = 0xA0; | |
817 | *(((char *)dest)+i) = data_ch[i]; | |
818 | udelay(10); /* XXX */ | |
819 | } | |
820 | ||
821 | /* we're done, now do an unlock bypass reset */ | |
822 | addr[0] = 0x90; | |
823 | addr[0] = 0x00; | |
824 | ||
825 | /* re-enable interrupts if necessary */ | |
826 | if (flag) | |
827 | enable_interrupts(); | |
828 | ||
829 | /* data polling for D7 */ | |
830 | start = get_timer (0); | |
831 | while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { | |
6d0f6bcf | 832 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
7ebf7443 WD |
833 | return (1); |
834 | } | |
835 | } | |
836 | return (0); | |
837 | } |