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c609719b WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. | |
4 | * Based on code by: | |
5 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <common.h> | |
27 | #include <ppc4xx.h> | |
28 | #include <asm/processor.h> | |
29 | ||
30 | #include <watchdog.h> | |
31 | ||
6d0f6bcf | 32 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
c609719b WD |
33 | |
34 | /*----------------------------------------------------------------------- | |
35 | * Functions | |
36 | */ | |
37 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); | |
38 | static int write_word8(flash_info_t *info, ulong dest, ulong data); | |
39 | static int write_word32 (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 flash_init (void) | |
46 | { | |
47 | int i; | |
48 | unsigned long size_b0, base_b0; | |
49 | unsigned long size_b1, base_b1; | |
50 | ||
51 | /* Init: no FLASHes known */ | |
6d0f6bcf | 52 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
8bde7f77 | 53 | flash_info[i].flash_id = FLASH_UNKNOWN; |
c609719b WD |
54 | } |
55 | ||
56 | /* Get Size of Boot and Main Flashes */ | |
57 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
58 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
8bde7f77 WD |
59 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
60 | size_b0, size_b0<<20); | |
61 | return 0; | |
c609719b WD |
62 | } |
63 | size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]); | |
64 | if (flash_info[1].flash_id == FLASH_UNKNOWN) { | |
8bde7f77 WD |
65 | printf ("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", |
66 | size_b1, size_b1<<20); | |
67 | return 0; | |
c609719b WD |
68 | } |
69 | ||
70 | /* Calculate base addresses */ | |
71 | base_b0 = -size_b0; | |
72 | base_b1 = -size_b1; | |
73 | ||
74 | /* Setup offsets for Boot Flash */ | |
75 | flash_get_offsets (base_b0, &flash_info[0]); | |
76 | ||
77 | /* Protect board level data */ | |
78 | (void)flash_protect(FLAG_PROTECT_SET, | |
79 | base_b0, | |
80 | flash_info[0].start[1] - 1, | |
81 | &flash_info[0]); | |
82 | ||
83 | ||
84 | /* Monitor protection ON by default */ | |
85 | (void)flash_protect(FLAG_PROTECT_SET, | |
8bde7f77 WD |
86 | base_b0 + size_b0 - monitor_flash_len, |
87 | base_b0 + size_b0 - 1, | |
88 | &flash_info[0]); | |
c609719b WD |
89 | |
90 | /* Protect the FPGA image */ | |
91 | (void)flash_protect(FLAG_PROTECT_SET, | |
8bde7f77 | 92 | FLASH_BASE1_PRELIM, |
6d0f6bcf | 93 | FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN - 1, |
8bde7f77 | 94 | &flash_info[1]); |
c609719b WD |
95 | |
96 | /* Protect the default boot image */ | |
97 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
98 | FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN, |
99 | FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN + 0x600000 - 1, | |
8bde7f77 | 100 | &flash_info[1]); |
c609719b WD |
101 | |
102 | /* Setup offsets for Main Flash */ | |
103 | flash_get_offsets (FLASH_BASE1_PRELIM, &flash_info[1]); | |
104 | ||
105 | return (size_b0 + size_b1); | |
106 | } /* end flash_init() */ | |
107 | ||
108 | /*----------------------------------------------------------------------- | |
109 | */ | |
110 | static void flash_get_offsets (ulong base, flash_info_t *info) | |
111 | { | |
112 | int i; | |
113 | ||
114 | /* set up sector start address table - FOR BOOT ROM ONLY!!! */ | |
115 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { | |
8bde7f77 WD |
116 | for (i = 0; i < info->sector_count; i++) |
117 | info->start[i] = base + (i * 0x00010000); | |
c609719b WD |
118 | } |
119 | } /* end flash_get_offsets() */ | |
120 | ||
121 | /*----------------------------------------------------------------------- | |
122 | */ | |
123 | void flash_print_info (flash_info_t *info) | |
124 | { | |
125 | int i; | |
126 | int k; | |
127 | int size; | |
128 | int erased; | |
129 | volatile unsigned long *flash; | |
130 | ||
131 | if (info->flash_id == FLASH_UNKNOWN) { | |
8bde7f77 WD |
132 | printf ("missing or unknown FLASH type\n"); |
133 | return; | |
c609719b WD |
134 | } |
135 | ||
136 | switch (info->flash_id & FLASH_VENDMASK) { | |
8bde7f77 | 137 | case FLASH_MAN_AMD: printf ("1 x AMD "); break; |
c609719b | 138 | case FLASH_MAN_STM: printf ("1 x STM "); break; |
8bde7f77 WD |
139 | case FLASH_MAN_INTEL: printf ("2 x Intel "); break; |
140 | default: printf ("Unknown Vendor "); | |
c609719b WD |
141 | } |
142 | ||
143 | switch (info->flash_id & FLASH_TYPEMASK) { | |
8bde7f77 | 144 | case FLASH_AM040: |
c609719b | 145 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) |
8bde7f77 | 146 | printf ("AM29LV040 (4096 Kbit, uniform sector size)\n"); |
c609719b | 147 | else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) |
8bde7f77 | 148 | printf ("M29W040B (4096 Kbit, uniform block size)\n"); |
c609719b | 149 | else |
8bde7f77 WD |
150 | printf ("UNKNOWN 29x040x (4096 Kbit, uniform sector size)\n"); |
151 | break; | |
152 | case FLASH_28F320J3A: | |
153 | printf ("28F320J3A (32 Mbit = 128K x 32)\n"); | |
154 | break; | |
155 | case FLASH_28F640J3A: | |
156 | printf ("28F640J3A (64 Mbit = 128K x 64)\n"); | |
157 | break; | |
158 | case FLASH_28F128J3A: | |
159 | printf ("28F128J3A (128 Mbit = 128K x 128)\n"); | |
160 | break; | |
161 | default: | |
162 | printf ("Unknown Chip Type\n"); | |
c609719b WD |
163 | } |
164 | ||
165 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) { | |
8bde7f77 WD |
166 | printf (" Size: %ld KB in %d Blocks\n", |
167 | info->size >> 10, info->sector_count); | |
c609719b | 168 | } else { |
8bde7f77 WD |
169 | printf (" Size: %ld KB in %d Sectors\n", |
170 | info->size >> 10, info->sector_count); | |
c609719b WD |
171 | } |
172 | ||
173 | printf (" Sector Start Addresses:"); | |
174 | for (i=0; i<info->sector_count; ++i) { | |
8bde7f77 WD |
175 | /* |
176 | * Check if whole sector is erased | |
177 | */ | |
178 | if (i != (info->sector_count-1)) | |
179 | size = info->start[i+1] - info->start[i]; | |
180 | else | |
181 | size = info->start[0] + info->size - info->start[i]; | |
182 | erased = 1; | |
183 | flash = (volatile unsigned long *)info->start[i]; | |
184 | size = size >> 2; /* divide by 4 for longword access */ | |
185 | for (k=0; k<size; k++) | |
186 | { | |
187 | if (*flash++ != 0xffffffff) | |
188 | { | |
189 | erased = 0; | |
190 | break; | |
191 | } | |
192 | } | |
193 | ||
194 | if ((i % 5) == 0) | |
195 | printf ("\n "); | |
196 | printf (" %08lX%s%s", | |
197 | info->start[i], | |
198 | erased ? " E" : " ", | |
199 | info->protect[i] ? "RO " : " " | |
200 | ); | |
c609719b WD |
201 | } |
202 | printf ("\n"); | |
203 | } /* end flash_print_info() */ | |
204 | ||
205 | /* | |
206 | * The following code cannot be run from FLASH! | |
207 | */ | |
208 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) | |
209 | { | |
210 | short i; | |
211 | ulong base = (ulong)addr; | |
212 | ||
213 | /* Setup default type */ | |
214 | info->flash_id = FLASH_UNKNOWN; | |
215 | info->sector_count =0; | |
216 | info->size = 0; | |
217 | ||
218 | /* Test for Boot Flash */ | |
219 | if (base == FLASH_BASE0_PRELIM) { | |
8bde7f77 WD |
220 | unsigned char value; |
221 | volatile unsigned char * addr2 = (unsigned char *)addr; | |
222 | ||
223 | /* Write auto select command: read Manufacturer ID */ | |
224 | *(addr2 + 0x555) = 0xaa; | |
225 | *(addr2 + 0x2aa) = 0x55; | |
226 | *(addr2 + 0x555) = 0x90; | |
227 | ||
228 | /* Manufacture ID */ | |
229 | value = *addr2; | |
230 | switch (value) { | |
231 | case (unsigned char)AMD_MANUFACT: | |
232 | info->flash_id = FLASH_MAN_AMD; | |
233 | break; | |
c609719b WD |
234 | case (unsigned char)STM_MANUFACT: |
235 | info->flash_id = FLASH_MAN_STM; | |
236 | break; | |
8bde7f77 WD |
237 | default: |
238 | *addr2 = 0xf0; /* no or unknown flash */ | |
239 | return 0; | |
240 | } | |
241 | ||
242 | /* Device ID */ | |
243 | value = *(addr2 + 1); | |
244 | switch (value) { | |
245 | case (unsigned char)AMD_ID_LV040B: | |
c609719b | 246 | case (unsigned char)STM_ID_29W040B: |
8bde7f77 WD |
247 | info->flash_id += FLASH_AM040; |
248 | info->sector_count = 8; | |
249 | info->size = 0x00080000; | |
250 | break; /* => 512Kb */ | |
251 | default: | |
252 | *addr2 = 0xf0; /* => no or unknown flash */ | |
253 | return 0; | |
254 | } | |
c609719b WD |
255 | } |
256 | else { /* MAIN Flash */ | |
8bde7f77 WD |
257 | unsigned long value; |
258 | volatile unsigned long * addr2 = (unsigned long *)addr; | |
259 | ||
260 | /* Write auto select command: read Manufacturer ID */ | |
261 | *addr2 = 0x90909090; | |
262 | ||
263 | /* Manufacture ID */ | |
264 | value = *addr2; | |
265 | switch (value) { | |
266 | case (unsigned long)INTEL_MANUFACT: | |
267 | info->flash_id = FLASH_MAN_INTEL; | |
268 | break; | |
269 | default: | |
270 | *addr2 = 0xff; /* no or unknown flash */ | |
271 | return 0; | |
272 | } | |
273 | ||
274 | /* Device ID - This shit is interleaved... */ | |
275 | value = *(addr2 + 1); | |
276 | switch (value) { | |
277 | case (unsigned long)INTEL_ID_28F320J3A: | |
278 | info->flash_id += FLASH_28F320J3A; | |
279 | info->sector_count = 32; | |
280 | info->size = 0x00400000 * 2; | |
281 | break; /* => 2 X 4 MB */ | |
282 | case (unsigned long)INTEL_ID_28F640J3A: | |
283 | info->flash_id += FLASH_28F640J3A; | |
284 | info->sector_count = 64; | |
285 | info->size = 0x00800000 * 2; | |
286 | break; /* => 2 X 8 MB */ | |
287 | case (unsigned long)INTEL_ID_28F128J3A: | |
288 | info->flash_id += FLASH_28F128J3A; | |
289 | info->sector_count = 128; | |
290 | info->size = 0x01000000 * 2; | |
291 | break; /* => 2 X 16 MB */ | |
292 | default: | |
293 | *addr2 = 0xff; /* => no or unknown flash */ | |
294 | } | |
c609719b WD |
295 | } |
296 | ||
6d0f6bcf JCPV |
297 | /* Make sure we don't exceed CONFIG_SYS_MAX_FLASH_SECT */ |
298 | if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { | |
8bde7f77 | 299 | printf ("** ERROR: sector count %d > max (%d) **\n", |
6d0f6bcf JCPV |
300 | info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); |
301 | info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; | |
c609719b WD |
302 | } |
303 | ||
304 | /* set up sector start address table */ | |
305 | switch (info->flash_id & FLASH_TYPEMASK) { | |
8bde7f77 WD |
306 | case FLASH_AM040: |
307 | for (i = 0; i < info->sector_count; i++) | |
308 | info->start[i] = base + (i * 0x00010000); | |
309 | break; | |
310 | case FLASH_28F320J3A: | |
311 | case FLASH_28F640J3A: | |
312 | case FLASH_28F128J3A: | |
313 | for (i = 0; i < info->sector_count; i++) | |
314 | info->start[i] = base + (i * 0x00020000 * 2); /* 2 Banks */ | |
315 | break; | |
c609719b WD |
316 | } |
317 | ||
318 | /* Test for Boot Flash */ | |
319 | if (base == FLASH_BASE0_PRELIM) { | |
8bde7f77 WD |
320 | volatile unsigned char *addr2; |
321 | /* check for protected sectors */ | |
322 | for (i = 0; i < info->sector_count; i++) { | |
323 | /* read sector protection at sector address, (AX .. A0) = 0x02 */ | |
324 | /* D0 = 1 if protected */ | |
325 | addr2 = (volatile unsigned char *)(info->start[i]); | |
326 | info->protect[i] = *(addr2 + 2) & 1; | |
327 | } | |
328 | ||
329 | /* Restore read mode */ | |
330 | *(unsigned char *)base = 0xF0; /* Reset NORMAL Flash */ | |
c609719b WD |
331 | } |
332 | else { /* Main Flash */ | |
8bde7f77 WD |
333 | volatile unsigned long *addr2; |
334 | /* check for protected sectors */ | |
335 | for (i = 0; i < info->sector_count; i++) { | |
336 | /* read sector protection at sector address, (AX .. A0) = 0x02 */ | |
337 | /* D0 = 1 if protected */ | |
338 | addr2 = (volatile unsigned long *)(info->start[i]); | |
339 | info->protect[i] = *(addr2 + 2) & 0x1; | |
340 | } | |
c609719b | 341 | |
8bde7f77 WD |
342 | /* Restore read mode */ |
343 | *(unsigned long *)base = 0xFFFFFFFF; /* Reset Flash */ | |
c609719b WD |
344 | } |
345 | ||
346 | return (info->size); | |
347 | } /* end flash_get_size() */ | |
348 | ||
349 | /*----------------------------------------------------------------------- | |
350 | */ | |
351 | ||
352 | static int wait_for_DQ7(ulong addr, uchar cmp_val, ulong tout) | |
353 | { | |
354 | int i; | |
355 | ||
356 | volatile uchar *vaddr = (uchar *)addr; | |
357 | ||
358 | /* Loop X times */ | |
359 | for (i = 1; i <= (100 * tout); i++) { /* Wait up to tout ms */ | |
8bde7f77 WD |
360 | udelay(10); |
361 | /* Pause 10 us */ | |
c609719b | 362 | |
8bde7f77 WD |
363 | /* Check for completion */ |
364 | if ((vaddr[0] & 0x80) == (cmp_val & 0x80)) { | |
365 | return 0; | |
366 | } | |
c609719b | 367 | |
8bde7f77 WD |
368 | /* KEEP THE LUSER HAPPY - Print a dot every 1.1 seconds */ |
369 | if (!(i % 110000)) | |
370 | putc('.'); | |
c609719b | 371 | |
8bde7f77 WD |
372 | /* Kick the dog if needed */ |
373 | WATCHDOG_RESET(); | |
c609719b WD |
374 | } |
375 | ||
376 | return 1; | |
377 | } /* wait_for_DQ7() */ | |
378 | ||
379 | /*----------------------------------------------------------------------- | |
380 | */ | |
381 | ||
382 | static int flash_erase8(flash_info_t *info, int s_first, int s_last) | |
383 | { | |
384 | int tcode, rcode = 0; | |
385 | volatile uchar *addr = (uchar *)(info->start[0]); | |
386 | volatile uchar *sector_addr; | |
387 | int flag, prot, sect; | |
388 | ||
389 | /* Validate arguments */ | |
390 | if ((s_first < 0) || (s_first > s_last)) { | |
8bde7f77 WD |
391 | if (info->flash_id == FLASH_UNKNOWN) |
392 | printf ("- missing\n"); | |
393 | else | |
394 | printf ("- no sectors to erase\n"); | |
395 | return 1; | |
c609719b WD |
396 | } |
397 | ||
398 | /* Check for KNOWN flash type */ | |
399 | if (info->flash_id == FLASH_UNKNOWN) { | |
8bde7f77 WD |
400 | printf ("Can't erase unknown flash type - aborted\n"); |
401 | return 1; | |
c609719b WD |
402 | } |
403 | ||
404 | /* Check for protected sectors */ | |
405 | prot = 0; | |
406 | for (sect = s_first; sect <= s_last; ++sect) { | |
8bde7f77 WD |
407 | if (info->protect[sect]) |
408 | prot++; | |
c609719b WD |
409 | } |
410 | if (prot) | |
8bde7f77 | 411 | printf ("- Warning: %d protected sectors will not be erased!\n", prot); |
c609719b | 412 | else |
8bde7f77 | 413 | printf ("\n"); |
c609719b WD |
414 | |
415 | /* Start erase on unprotected sectors */ | |
416 | for (sect = s_first; sect <= s_last; sect++) { | |
8bde7f77 WD |
417 | if (info->protect[sect] == 0) { /* not protected */ |
418 | sector_addr = (uchar *)(info->start[sect]); | |
c609719b | 419 | |
8bde7f77 | 420 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) |
c609719b WD |
421 | printf("Erasing block %p\n", sector_addr); |
422 | else | |
423 | printf("Erasing sector %p\n", sector_addr); | |
424 | ||
8bde7f77 WD |
425 | /* Disable interrupts which might cause Flash to timeout */ |
426 | flag = disable_interrupts(); | |
427 | ||
428 | *(addr + 0x555) = (uchar)0xAA; | |
429 | *(addr + 0x2aa) = (uchar)0x55; | |
430 | *(addr + 0x555) = (uchar)0x80; | |
431 | *(addr + 0x555) = (uchar)0xAA; | |
432 | *(addr + 0x2aa) = (uchar)0x55; | |
433 | *sector_addr = (uchar)0x30; /* sector erase */ | |
434 | ||
435 | /* | |
436 | * Wait for each sector to complete, it's more | |
437 | * reliable. According to AMD Spec, you must | |
438 | * issue all erase commands within a specified | |
439 | * timeout. This has been seen to fail, especially | |
440 | * if printf()s are included (for debug)!! | |
441 | * Takes up to 6 seconds. | |
442 | */ | |
443 | tcode = wait_for_DQ7((ulong)sector_addr, 0x80, 6000); | |
444 | ||
445 | /* re-enable interrupts if necessary */ | |
446 | if (flag) | |
447 | enable_interrupts(); | |
448 | ||
449 | /* Make sure we didn't timeout */ | |
450 | if (tcode) { | |
451 | printf ("Timeout\n"); | |
452 | rcode = 1; | |
453 | } | |
454 | } | |
c609719b WD |
455 | } |
456 | ||
457 | /* wait at least 80us - let's wait 1 ms */ | |
458 | udelay (1000); | |
459 | ||
460 | /* reset to read mode */ | |
461 | addr = (uchar *)info->start[0]; | |
462 | *addr = (uchar)0xF0; /* reset bank */ | |
463 | ||
464 | printf (" done\n"); | |
465 | return rcode; | |
466 | } /* end flash_erase8() */ | |
467 | ||
468 | static int flash_erase32(flash_info_t *info, int s_first, int s_last) | |
469 | { | |
470 | int flag, sect; | |
471 | ulong start, now, last; | |
472 | int prot = 0; | |
473 | ||
474 | /* Validate arguments */ | |
475 | if ((s_first < 0) || (s_first > s_last)) { | |
8bde7f77 WD |
476 | if (info->flash_id == FLASH_UNKNOWN) |
477 | printf ("- missing\n"); | |
478 | else | |
479 | printf ("- no sectors to erase\n"); | |
480 | return 1; | |
c609719b WD |
481 | } |
482 | ||
483 | /* Check for KNOWN flash type */ | |
484 | if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) { | |
8bde7f77 WD |
485 | printf ("Can erase only Intel flash types - aborted\n"); |
486 | return 1; | |
c609719b WD |
487 | } |
488 | ||
489 | /* Check for protected sectors */ | |
490 | for (sect = s_first; sect <= s_last; ++sect) { | |
8bde7f77 WD |
491 | if (info->protect[sect]) |
492 | prot++; | |
c609719b WD |
493 | } |
494 | if (prot) | |
8bde7f77 | 495 | printf ("- Warning: %d protected sectors will not be erased!\n", prot); |
c609719b | 496 | else |
8bde7f77 | 497 | printf ("\n"); |
c609719b WD |
498 | |
499 | start = get_timer (0); | |
500 | last = start; | |
501 | /* Start erase on unprotected sectors */ | |
502 | for (sect = s_first; sect <= s_last; sect++) { | |
8bde7f77 WD |
503 | WATCHDOG_RESET(); |
504 | if (info->protect[sect] == 0) { /* not protected */ | |
505 | vu_long *addr = (vu_long *)(info->start[sect]); | |
506 | unsigned long status; | |
507 | ||
508 | /* Disable interrupts which might cause a timeout here */ | |
509 | flag = disable_interrupts(); | |
510 | ||
511 | *addr = 0x00500050; /* clear status register */ | |
512 | *addr = 0x00200020; /* erase setup */ | |
513 | *addr = 0x00D000D0; /* erase confirm */ | |
514 | ||
515 | /* re-enable interrupts if necessary */ | |
516 | if (flag) | |
517 | enable_interrupts(); | |
518 | ||
519 | /* Wait at least 80us - let's wait 1 ms */ | |
520 | udelay (1000); | |
521 | ||
522 | while (((status = *addr) & 0x00800080) != 0x00800080) { | |
6d0f6bcf | 523 | if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
8bde7f77 WD |
524 | printf ("Timeout\n"); |
525 | *addr = 0x00B000B0; /* suspend erase */ | |
526 | *addr = 0x00FF00FF; /* reset to read mode */ | |
527 | return 1; | |
528 | } | |
529 | ||
530 | /* show that we're waiting */ | |
531 | if ((now - last) > 990) { /* every second */ | |
532 | putc ('.'); | |
533 | last = now; | |
534 | } | |
535 | } | |
536 | *addr = 0x00FF00FF; /* reset to read mode */ | |
537 | } | |
c609719b WD |
538 | } |
539 | printf (" done\n"); | |
540 | return 0; | |
541 | } /* end flash_erase32() */ | |
542 | ||
543 | int flash_erase(flash_info_t *info, int s_first, int s_last) | |
544 | { | |
545 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) | |
8bde7f77 | 546 | return flash_erase8(info, s_first, s_last); |
c609719b | 547 | else |
8bde7f77 | 548 | return flash_erase32(info, s_first, s_last); |
c609719b WD |
549 | } /* end flash_erase() */ |
550 | ||
551 | /*----------------------------------------------------------------------- | |
552 | * Copy memory to flash, returns: | |
553 | * 0 - OK | |
554 | * 1 - write timeout | |
555 | * 2 - Flash not erased | |
556 | */ | |
557 | static int write_buff8(flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
558 | { | |
559 | ulong cp, wp, data; | |
560 | ulong start; | |
561 | int i, l, rc; | |
562 | ||
563 | start = get_timer (0); | |
564 | ||
565 | wp = (addr & ~3); /* get lower word | |
8bde7f77 | 566 | aligned address */ |
c609719b WD |
567 | |
568 | /* | |
569 | * handle unaligned start bytes | |
570 | */ | |
571 | if ((l = addr - wp) != 0) { | |
8bde7f77 WD |
572 | data = 0; |
573 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
574 | data = (data << 8) | (*(uchar *)cp); | |
575 | } | |
576 | for (; i<4 && cnt>0; ++i) { | |
577 | data = (data << 8) | *src++; | |
578 | --cnt; | |
579 | ++cp; | |
580 | } | |
581 | for (; cnt==0 && i<4; ++i, ++cp) { | |
582 | data = (data << 8) | (*(uchar *)cp); | |
583 | } | |
584 | ||
585 | if ((rc = write_word8(info, wp, data)) != 0) { | |
586 | return (rc); | |
587 | } | |
588 | wp += 4; | |
c609719b WD |
589 | } |
590 | ||
591 | /* | |
592 | * handle word aligned part | |
593 | */ | |
594 | while (cnt >= 4) { | |
8bde7f77 WD |
595 | data = 0; |
596 | for (i=0; i<4; ++i) { | |
597 | data = (data << 8) | *src++; | |
598 | } | |
599 | if ((rc = write_word8(info, wp, data)) != 0) { | |
600 | return (rc); | |
601 | } | |
602 | wp += 4; | |
603 | cnt -= 4; | |
604 | if (get_timer(start) > 1000) { /* every second */ | |
605 | WATCHDOG_RESET(); | |
606 | putc ('.'); | |
607 | start = get_timer(0); | |
608 | } | |
c609719b WD |
609 | } |
610 | ||
611 | if (cnt == 0) { | |
8bde7f77 | 612 | return (0); |
c609719b WD |
613 | } |
614 | ||
615 | /* | |
616 | * handle unaligned tail bytes | |
617 | */ | |
618 | data = 0; | |
619 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
8bde7f77 WD |
620 | data = (data << 8) | *src++; |
621 | --cnt; | |
c609719b WD |
622 | } |
623 | for (; i<4; ++i, ++cp) { | |
8bde7f77 | 624 | data = (data << 8) | (*(uchar *)cp); |
c609719b WD |
625 | } |
626 | ||
627 | return (write_word8(info, wp, data)); | |
628 | } /* end write_buff8() */ | |
629 | ||
630 | #define FLASH_WIDTH 4 /* flash bus width in bytes */ | |
631 | static int write_buff32 (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
632 | { | |
633 | ulong cp, wp, data; | |
634 | int i, l, rc; | |
635 | ulong start; | |
636 | ||
637 | start = get_timer (0); | |
638 | ||
639 | if (info->flash_id == FLASH_UNKNOWN) { | |
640 | return 4; | |
641 | } | |
642 | ||
643 | wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH aligned address */ | |
644 | ||
645 | /* | |
646 | * handle unaligned start bytes | |
647 | */ | |
648 | if ((l = addr - wp) != 0) { | |
649 | data = 0; | |
650 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
651 | data = (data << 8) | (*(uchar *)cp); | |
652 | } | |
653 | for (; i<FLASH_WIDTH && cnt>0; ++i) { | |
654 | data = (data << 8) | *src++; | |
655 | --cnt; | |
656 | ++cp; | |
657 | } | |
658 | for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) { | |
659 | data = (data << 8) | (*(uchar *)cp); | |
660 | } | |
661 | ||
662 | if ((rc = write_word32(info, wp, data)) != 0) { | |
663 | return (rc); | |
664 | } | |
665 | wp += FLASH_WIDTH; | |
666 | } | |
667 | ||
668 | /* | |
669 | * handle FLASH_WIDTH aligned part | |
670 | */ | |
671 | while (cnt >= FLASH_WIDTH) { | |
672 | data = 0; | |
673 | for (i=0; i<FLASH_WIDTH; ++i) { | |
674 | data = (data << 8) | *src++; | |
675 | } | |
676 | if ((rc = write_word32(info, wp, data)) != 0) { | |
677 | return (rc); | |
678 | } | |
679 | wp += FLASH_WIDTH; | |
680 | cnt -= FLASH_WIDTH; | |
8bde7f77 | 681 | if (get_timer(start) > 990) { /* every second */ |
c609719b WD |
682 | putc ('.'); |
683 | start = get_timer(0); | |
684 | } | |
685 | } | |
686 | ||
687 | if (cnt == 0) { | |
688 | return (0); | |
689 | } | |
690 | ||
691 | /* | |
692 | * handle unaligned tail bytes | |
693 | */ | |
694 | data = 0; | |
695 | for (i=0, cp=wp; i<FLASH_WIDTH && cnt>0; ++i, ++cp) { | |
696 | data = (data << 8) | *src++; | |
697 | --cnt; | |
698 | } | |
699 | for (; i<FLASH_WIDTH; ++i, ++cp) { | |
700 | data = (data << 8) | (*(uchar *)cp); | |
701 | } | |
702 | ||
703 | return (write_word32(info, wp, data)); | |
704 | } /* write_buff32() */ | |
705 | ||
706 | int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
707 | { | |
708 | int retval; | |
709 | ||
710 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) | |
8bde7f77 | 711 | retval = write_buff8(info, src, addr, cnt); |
c609719b | 712 | else |
8bde7f77 | 713 | retval = write_buff32(info, src, addr, cnt); |
c609719b WD |
714 | |
715 | return retval; | |
716 | } /* end write_buff() */ | |
717 | ||
718 | /*----------------------------------------------------------------------- | |
719 | * Write a word to Flash, returns: | |
720 | * 0 - OK | |
721 | * 1 - write timeout | |
722 | * 2 - Flash not erased | |
723 | */ | |
724 | ||
725 | static int write_word8(flash_info_t *info, ulong dest, ulong data) | |
726 | { | |
727 | volatile uchar *addr2 = (uchar *)(info->start[0]); | |
728 | volatile uchar *dest2 = (uchar *)dest; | |
729 | volatile uchar *data2 = (uchar *)&data; | |
730 | int flag; | |
731 | int i, tcode, rcode = 0; | |
732 | ||
733 | /* Check if Flash is (sufficently) erased */ | |
734 | if ((*((volatile uchar *)dest) & | |
8bde7f77 WD |
735 | (uchar)data) != (uchar)data) { |
736 | return (2); | |
c609719b WD |
737 | } |
738 | ||
739 | for (i=0; i < (4 / sizeof(uchar)); i++) { | |
8bde7f77 WD |
740 | /* Disable interrupts which might cause a timeout here */ |
741 | flag = disable_interrupts(); | |
c609719b | 742 | |
8bde7f77 WD |
743 | *(addr2 + 0x555) = (uchar)0xAA; |
744 | *(addr2 + 0x2aa) = (uchar)0x55; | |
745 | *(addr2 + 0x555) = (uchar)0xA0; | |
c609719b | 746 | |
8bde7f77 | 747 | dest2[i] = data2[i]; |
c609719b | 748 | |
8bde7f77 WD |
749 | /* Wait for write to complete, up to 1ms */ |
750 | tcode = wait_for_DQ7((ulong)&dest2[i], data2[i], 1); | |
c609719b | 751 | |
8bde7f77 WD |
752 | /* re-enable interrupts if necessary */ |
753 | if (flag) | |
754 | enable_interrupts(); | |
c609719b | 755 | |
8bde7f77 WD |
756 | /* Make sure we didn't timeout */ |
757 | if (tcode) { | |
758 | rcode = 1; | |
759 | } | |
c609719b WD |
760 | } |
761 | ||
762 | return rcode; | |
763 | } /* end write_word8() */ | |
764 | ||
765 | static int write_word32(flash_info_t *info, ulong dest, ulong data) | |
766 | { | |
767 | vu_long *addr = (vu_long *)dest; | |
768 | ulong status; | |
769 | ulong start; | |
770 | int flag; | |
771 | ||
772 | /* Check if Flash is (sufficiently) erased */ | |
773 | if ((*addr & data) != data) { | |
8bde7f77 | 774 | return (2); |
c609719b WD |
775 | } |
776 | /* Disable interrupts which might cause a timeout here */ | |
777 | flag = disable_interrupts(); | |
778 | ||
779 | *addr = 0x00400040; /* write setup */ | |
780 | *addr = data; | |
781 | ||
782 | /* re-enable interrupts if necessary */ | |
783 | if (flag) | |
8bde7f77 | 784 | enable_interrupts(); |
c609719b WD |
785 | |
786 | start = get_timer (0); | |
787 | ||
788 | while (((status = *addr) & 0x00800080) != 0x00800080) { | |
8bde7f77 | 789 | WATCHDOG_RESET(); |
6d0f6bcf | 790 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
8bde7f77 WD |
791 | *addr = 0x00FF00FF; /* restore read mode */ |
792 | return (1); | |
793 | } | |
c609719b WD |
794 | } |
795 | ||
796 | *addr = 0x00FF00FF; /* restore read mode */ | |
797 | ||
798 | return (0); | |
799 | } /* end write_word32() */ | |
800 | ||
801 | ||
802 | static int _flash_protect(flash_info_t *info, long sector) | |
803 | { | |
804 | int i; | |
805 | int flag; | |
806 | ulong status; | |
807 | int rcode = 0; | |
77ddac94 | 808 | volatile long *addr = (long *)sector; |
c609719b WD |
809 | |
810 | switch(info->flash_id & FLASH_TYPEMASK) { | |
8bde7f77 WD |
811 | case FLASH_28F320J3A: |
812 | case FLASH_28F640J3A: | |
813 | case FLASH_28F128J3A: | |
814 | /* Disable interrupts which might cause Flash to timeout */ | |
815 | flag = disable_interrupts(); | |
816 | ||
817 | /* Issue command */ | |
818 | *addr = 0x00500050L; /* Clear the status register */ | |
819 | *addr = 0x00600060L; /* Set lock bit setup */ | |
820 | *addr = 0x00010001L; /* Set lock bit confirm */ | |
821 | ||
822 | /* Wait for command completion */ | |
823 | for (i = 0; i < 10; i++) { /* 75us timeout, wait 100us */ | |
824 | udelay(10); | |
825 | if ((*addr & 0x00800080L) == 0x00800080L) | |
826 | break; | |
827 | } | |
828 | ||
829 | /* Not successful? */ | |
830 | status = *addr; | |
831 | if (status != 0x00800080L) { | |
832 | printf("Protect %x sector failed: %x\n", | |
833 | (uint)sector, (uint)status); | |
834 | rcode = 1; | |
835 | } | |
836 | ||
837 | /* Restore read mode */ | |
838 | *addr = 0x00ff00ffL; | |
839 | ||
840 | /* re-enable interrupts if necessary */ | |
841 | if (flag) | |
842 | enable_interrupts(); | |
843 | ||
844 | break; | |
845 | case FLASH_AM040: /* No soft sector protection */ | |
846 | break; | |
c609719b WD |
847 | } |
848 | ||
849 | /* Turn protection on for this sector */ | |
850 | for (i = 0; i < info->sector_count; i++) { | |
8bde7f77 WD |
851 | if (info->start[i] == sector) { |
852 | info->protect[i] = 1; | |
853 | break; | |
854 | } | |
c609719b WD |
855 | } |
856 | ||
857 | return rcode; | |
858 | } /* end _flash_protect() */ | |
859 | ||
860 | static int _flash_unprotect(flash_info_t *info, long sector) | |
861 | { | |
862 | int i; | |
863 | int flag; | |
864 | ulong status; | |
865 | int rcode = 0; | |
77ddac94 | 866 | volatile long *addr = (long *)sector; |
c609719b WD |
867 | |
868 | switch(info->flash_id & FLASH_TYPEMASK) { | |
8bde7f77 WD |
869 | case FLASH_28F320J3A: |
870 | case FLASH_28F640J3A: | |
871 | case FLASH_28F128J3A: | |
872 | /* Disable interrupts which might cause Flash to timeout */ | |
873 | flag = disable_interrupts(); | |
874 | ||
875 | *addr = 0x00500050L; /* Clear the status register */ | |
876 | *addr = 0x00600060L; /* Clear lock bit setup */ | |
877 | *addr = 0x00D000D0L; /* Clear lock bit confirm */ | |
878 | ||
879 | /* Wait for command completion */ | |
880 | for (i = 0; i < 80 ; i++) { /* 700ms timeout, wait 800 */ | |
881 | udelay(10000); /* Delay 10ms */ | |
882 | if ((*addr & 0x00800080L) == 0x00800080L) | |
883 | break; | |
884 | } | |
885 | ||
886 | /* Not successful? */ | |
887 | status = *addr; | |
888 | if (status != 0x00800080L) { | |
889 | printf("Un-protect %x sector failed: %x\n", | |
890 | (uint)sector, (uint)status); | |
891 | *addr = 0x00ff00ffL; | |
892 | rcode = 1; | |
893 | } | |
894 | ||
895 | /* restore read mode */ | |
896 | *addr = 0x00ff00ffL; | |
897 | ||
898 | /* re-enable interrupts if necessary */ | |
899 | if (flag) | |
900 | enable_interrupts(); | |
901 | ||
902 | break; | |
903 | case FLASH_AM040: /* No soft sector protection */ | |
904 | break; | |
c609719b WD |
905 | } |
906 | ||
907 | /* | |
908 | * Fix Intel's little red wagon. Reprotect | |
909 | * sectors that were protected before we undid | |
910 | * protection on a specific sector. | |
911 | */ | |
912 | for (i = 0; i < info->sector_count; i++) { | |
8bde7f77 WD |
913 | if (info->start[i] != sector) { |
914 | if (info->protect[i]) { | |
915 | if (_flash_protect(info, info->start[i])) | |
916 | rcode = 1; | |
c609719b | 917 | } |
8bde7f77 WD |
918 | } |
919 | else /* Turn protection off for this sector */ | |
920 | info->protect[i] = 0; | |
c609719b WD |
921 | } |
922 | ||
923 | return rcode; | |
924 | } /* end _flash_unprotect() */ | |
925 | ||
926 | ||
927 | int flash_real_protect(flash_info_t *info, long sector, int prot) | |
928 | { | |
929 | int rcode; | |
930 | ||
931 | if (prot) | |
8bde7f77 | 932 | rcode = _flash_protect(info, info->start[sector]); |
c609719b | 933 | else |
8bde7f77 | 934 | rcode = _flash_unprotect(info, info->start[sector]); |
c609719b WD |
935 | |
936 | return rcode; | |
937 | } /* end flash_real_protect() */ | |
938 | ||
939 | /*----------------------------------------------------------------------- | |
940 | */ |