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db2f721f WD |
1 | /* |
2 | * (C) Copyright 2000, 2001 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com | |
6 | * Add support the Sharp chips on the mpc8260ads. | |
7 | * I started with board/ip860/flash.c and made changes I found in | |
8 | * the MTD project by David Schleef. | |
9 | * | |
10 | * See file CREDITS for list of people who contributed to this | |
11 | * project. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation; either version 2 of | |
16 | * the License, or (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
26 | * MA 02111-1307 USA | |
27 | */ | |
28 | ||
29 | #include <common.h> | |
30 | ||
31 | ||
6d0f6bcf | 32 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
db2f721f | 33 | |
5a1aceb0 | 34 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
0e8d1586 | 35 | # ifndef CONFIG_ENV_ADDR |
6d0f6bcf | 36 | # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
db2f721f | 37 | # endif |
0e8d1586 JCPV |
38 | # ifndef CONFIG_ENV_SIZE |
39 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE | |
db2f721f | 40 | # endif |
0e8d1586 JCPV |
41 | # ifndef CONFIG_ENV_SECT_SIZE |
42 | # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE | |
db2f721f WD |
43 | # endif |
44 | #endif | |
45 | ||
46 | /*----------------------------------------------------------------------- | |
47 | * Functions | |
48 | */ | |
49 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); | |
50 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
51 | static int clear_block_lock_bit(vu_long * addr); | |
52 | ||
53 | /*----------------------------------------------------------------------- | |
54 | */ | |
55 | ||
56 | unsigned long flash_init (void) | |
57 | { | |
5d232d0e | 58 | #ifndef CONFIG_MPC8266ADS |
6d0f6bcf | 59 | volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; |
db2f721f WD |
60 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
61 | volatile ip860_bcsr_t *bcsr = (ip860_bcsr_t *)BCSR_BASE; | |
62 | #endif | |
63 | unsigned long size; | |
64 | int i; | |
65 | ||
66 | /* Init: enable write, | |
67 | * or we cannot even write flash commands | |
68 | */ | |
5d232d0e | 69 | #ifndef CONFIG_MPC8266ADS |
db2f721f WD |
70 | bcsr->bd_ctrl |= BD_CTRL_FLWE; |
71 | #endif | |
72 | ||
73 | ||
6d0f6bcf | 74 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
db2f721f WD |
75 | flash_info[i].flash_id = FLASH_UNKNOWN; |
76 | ||
77 | /* set the default sector offset */ | |
78 | } | |
79 | ||
80 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
81 | ||
82 | size = flash_get_size((vu_long *)FLASH_BASE, &flash_info[0]); | |
83 | ||
84 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
85 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
86 | size, size<<20); | |
87 | } | |
88 | ||
5d232d0e | 89 | #ifndef CONFIG_MPC8266ADS |
db2f721f | 90 | /* Remap FLASH according to real size */ |
6d0f6bcf JCPV |
91 | memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
92 | memctl->memc_br1 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | | |
db2f721f WD |
93 | (memctl->memc_br1 & ~(BR_BA_MSK)); |
94 | #endif | |
95 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 96 | size = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
db2f721f WD |
97 | |
98 | flash_info[0].size = size; | |
99 | ||
6d0f6bcf | 100 | #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
db2f721f WD |
101 | /* monitor protection ON by default */ |
102 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
103 | CONFIG_SYS_MONITOR_BASE, |
104 | CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, | |
db2f721f WD |
105 | &flash_info[0]); |
106 | #endif | |
107 | ||
5a1aceb0 | 108 | #ifdef CONFIG_ENV_IS_IN_FLASH |
db2f721f WD |
109 | /* ENV protection ON by default */ |
110 | flash_protect(FLAG_PROTECT_SET, | |
0e8d1586 JCPV |
111 | CONFIG_ENV_ADDR, |
112 | CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, | |
db2f721f WD |
113 | &flash_info[0]); |
114 | #endif | |
115 | return (size); | |
116 | } | |
117 | ||
118 | /*----------------------------------------------------------------------- | |
119 | */ | |
120 | void flash_print_info (flash_info_t *info) | |
121 | { | |
122 | int i; | |
123 | ||
124 | if (info->flash_id == FLASH_UNKNOWN) { | |
125 | printf ("missing or unknown FLASH type\n"); | |
126 | return; | |
127 | } | |
128 | ||
129 | switch (info->flash_id & FLASH_VENDMASK) { | |
130 | case FLASH_MAN_INTEL: printf ("Intel "); break; | |
131 | case FLASH_MAN_SHARP: printf ("Sharp "); break; | |
132 | default: printf ("Unknown Vendor "); break; | |
133 | } | |
134 | ||
135 | switch (info->flash_id & FLASH_TYPEMASK) { | |
136 | case FLASH_28F016SV: printf ("28F016SV (16 Mbit, 32 x 64k)\n"); | |
137 | break; | |
138 | case FLASH_28F160S3: printf ("28F160S3 (16 Mbit, 32 x 512K)\n"); | |
139 | break; | |
140 | case FLASH_28F320S3: printf ("28F320S3 (32 Mbit, 64 x 512K)\n"); | |
141 | break; | |
142 | case FLASH_LH28F016SCT: printf ("28F016SC (16 Mbit, 32 x 64K)\n"); | |
143 | break; | |
144 | default: printf ("Unknown Chip Type\n"); | |
145 | break; | |
146 | } | |
147 | ||
148 | printf (" Size: %ld MB in %d Sectors\n", | |
149 | info->size >> 20, info->sector_count); | |
150 | ||
151 | printf (" Sector Start Addresses:"); | |
152 | for (i=0; i<info->sector_count; ++i) { | |
153 | if ((i % 5) == 0) | |
154 | printf ("\n "); | |
155 | printf (" %08lX%s", | |
156 | info->start[i], | |
157 | info->protect[i] ? " (RO)" : " " | |
158 | ); | |
159 | } | |
160 | printf ("\n"); | |
161 | } | |
162 | ||
163 | /*----------------------------------------------------------------------- | |
164 | */ | |
165 | ||
166 | ||
167 | /*----------------------------------------------------------------------- | |
168 | */ | |
169 | ||
170 | /* | |
171 | * The following code cannot be run from FLASH! | |
172 | */ | |
173 | ||
174 | static ulong flash_get_size (vu_long *addr, flash_info_t *info) | |
175 | { | |
176 | short i; | |
177 | ulong value; | |
178 | ulong base = (ulong)addr; | |
179 | ulong sector_offset; | |
180 | ||
181 | /* Write "Intelligent Identifier" command: read Manufacturer ID */ | |
182 | *addr = 0x90909090; | |
183 | ||
184 | value = addr[0] & 0x00FF00FF; | |
185 | switch (value) { | |
186 | case MT_MANUFACT: /* SHARP, MT or => Intel */ | |
187 | case INTEL_ALT_MANU: | |
188 | info->flash_id = FLASH_MAN_INTEL; | |
189 | break; | |
190 | default: | |
191 | printf("unknown manufacturer: %x\n", (unsigned int)value); | |
192 | info->flash_id = FLASH_UNKNOWN; | |
193 | info->sector_count = 0; | |
194 | info->size = 0; | |
195 | return (0); /* no or unknown flash */ | |
196 | } | |
197 | ||
198 | value = addr[1]; /* device ID */ | |
199 | ||
200 | switch (value) { | |
201 | case (INTEL_ID_28F016S): | |
202 | info->flash_id += FLASH_28F016SV; | |
203 | info->sector_count = 32; | |
204 | info->size = 0x00400000; | |
205 | sector_offset = 0x20000; | |
206 | break; /* => 2x2 MB */ | |
207 | ||
208 | case (INTEL_ID_28F160S3): | |
209 | info->flash_id += FLASH_28F160S3; | |
210 | info->sector_count = 32; | |
211 | info->size = 0x00400000; | |
212 | sector_offset = 0x20000; | |
213 | break; /* => 2x2 MB */ | |
214 | ||
215 | case (INTEL_ID_28F320S3): | |
216 | info->flash_id += FLASH_28F320S3; | |
217 | info->sector_count = 64; | |
218 | info->size = 0x00800000; | |
219 | sector_offset = 0x20000; | |
220 | break; /* => 2x4 MB */ | |
221 | ||
222 | case SHARP_ID_28F016SCL: | |
223 | case SHARP_ID_28F016SCZ: | |
224 | info->flash_id = FLASH_MAN_SHARP | FLASH_LH28F016SCT; | |
225 | info->sector_count = 32; | |
226 | info->size = 0x00800000; | |
227 | sector_offset = 0x40000; | |
228 | break; /* => 4x2 MB */ | |
229 | ||
230 | ||
231 | default: | |
232 | info->flash_id = FLASH_UNKNOWN; | |
233 | return (0); /* => no or unknown flash */ | |
234 | ||
235 | } | |
236 | ||
237 | /* set up sector start address table */ | |
238 | for (i = 0; i < info->sector_count; i++) { | |
239 | info->start[i] = base; | |
240 | base += sector_offset; | |
241 | /* don't know how to check sector protection */ | |
242 | info->protect[i] = 0; | |
243 | } | |
244 | ||
245 | /* | |
246 | * Prevent writes to uninitialized FLASH. | |
247 | */ | |
248 | if (info->flash_id != FLASH_UNKNOWN) { | |
249 | addr = (vu_long *)info->start[0]; | |
250 | ||
251 | *addr = 0xFFFFFF; /* reset bank to read array mode */ | |
252 | } | |
253 | ||
254 | return (info->size); | |
255 | } | |
256 | ||
257 | ||
258 | /*----------------------------------------------------------------------- | |
259 | */ | |
260 | ||
261 | int flash_erase (flash_info_t *info, int s_first, int s_last) | |
262 | { | |
263 | int flag, prot, sect; | |
264 | ulong start, now, last; | |
265 | ||
266 | if ((s_first < 0) || (s_first > s_last)) { | |
267 | if (info->flash_id == FLASH_UNKNOWN) { | |
268 | printf ("- missing\n"); | |
269 | } else { | |
270 | printf ("- no sectors to erase\n"); | |
271 | } | |
272 | return 1; | |
273 | } | |
274 | ||
275 | if ( ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) | |
276 | && ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_SHARP) ) { | |
277 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
278 | info->flash_id); | |
279 | return 1; | |
280 | } | |
281 | ||
282 | prot = 0; | |
283 | for (sect=s_first; sect<=s_last; ++sect) { | |
284 | if (info->protect[sect]) { | |
285 | prot++; | |
286 | } | |
287 | } | |
288 | ||
289 | if (prot) { | |
290 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
291 | prot); | |
292 | } else { | |
293 | printf ("\n"); | |
294 | } | |
295 | ||
296 | /* Make Sure Block Lock Bit is not set. */ | |
297 | if(clear_block_lock_bit((vu_long *)(info->start[s_first]))){ | |
298 | return 1; | |
299 | } | |
300 | ||
301 | ||
302 | /* Start erase on unprotected sectors */ | |
303 | for (sect = s_first; sect<=s_last; sect++) { | |
304 | if (info->protect[sect] == 0) { /* not protected */ | |
305 | vu_long *addr = (vu_long *)(info->start[sect]); | |
306 | ||
307 | last = start = get_timer (0); | |
308 | ||
309 | /* Disable interrupts which might cause a timeout here */ | |
310 | flag = disable_interrupts(); | |
311 | ||
312 | /* Reset Array */ | |
313 | *addr = 0xffffffff; | |
314 | /* Clear Status Register */ | |
315 | *addr = 0x50505050; | |
316 | /* Single Block Erase Command */ | |
317 | *addr = 0x20202020; | |
318 | /* Confirm */ | |
319 | *addr = 0xD0D0D0D0; | |
320 | ||
321 | if((info->flash_id & FLASH_TYPEMASK) != FLASH_LH28F016SCT) { | |
322 | /* Resume Command, as per errata update */ | |
323 | *addr = 0xD0D0D0D0; | |
324 | } | |
325 | ||
326 | /* re-enable interrupts if necessary */ | |
327 | if (flag) | |
328 | enable_interrupts(); | |
329 | ||
330 | /* wait at least 80us - let's wait 1 ms */ | |
331 | udelay (1000); | |
332 | while ((*addr & 0x80808080) != 0x80808080) { | |
333 | if(*addr & 0x20202020){ | |
334 | printf("Error in Block Erase - Lock Bit may be set!\n"); | |
335 | printf("Status Register = 0x%X\n", (uint)*addr); | |
336 | *addr = 0xFFFFFFFF; /* reset bank */ | |
337 | return 1; | |
338 | } | |
6d0f6bcf | 339 | if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
db2f721f WD |
340 | printf ("Timeout\n"); |
341 | *addr = 0xFFFFFFFF; /* reset bank */ | |
342 | return 1; | |
343 | } | |
344 | /* show that we're waiting */ | |
345 | if ((now - last) > 1000) { /* every second */ | |
346 | putc ('.'); | |
347 | last = now; | |
348 | } | |
349 | } | |
350 | ||
351 | /* reset to read mode */ | |
352 | *addr = 0xFFFFFFFF; | |
353 | } | |
354 | } | |
355 | ||
356 | printf (" done\n"); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | /*----------------------------------------------------------------------- | |
361 | * Copy memory to flash, returns: | |
362 | * 0 - OK | |
363 | * 1 - write timeout | |
364 | * 2 - Flash not erased | |
365 | */ | |
366 | ||
367 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
368 | { | |
369 | ulong cp, wp, data; | |
370 | int i, l, rc; | |
371 | ||
372 | wp = (addr & ~3); /* get lower word aligned address */ | |
373 | ||
374 | /* | |
375 | * handle unaligned start bytes | |
376 | */ | |
377 | if ((l = addr - wp) != 0) { | |
378 | data = 0; | |
379 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
380 | data = (data << 8) | (*(uchar *)cp); | |
381 | } | |
382 | for (; i<4 && cnt>0; ++i) { | |
383 | data = (data << 8) | *src++; | |
384 | --cnt; | |
385 | ++cp; | |
386 | } | |
387 | for (; cnt==0 && i<4; ++i, ++cp) { | |
388 | data = (data << 8) | (*(uchar *)cp); | |
389 | } | |
390 | ||
391 | if ((rc = write_word(info, wp, data)) != 0) { | |
392 | return (rc); | |
393 | } | |
394 | wp += 4; | |
395 | } | |
396 | ||
397 | /* | |
398 | * handle word aligned part | |
399 | */ | |
400 | while (cnt >= 4) { | |
401 | data = 0; | |
402 | for (i=0; i<4; ++i) { | |
403 | data = (data << 8) | *src++; | |
404 | } | |
405 | if ((rc = write_word(info, wp, data)) != 0) { | |
406 | return (rc); | |
407 | } | |
408 | wp += 4; | |
409 | cnt -= 4; | |
410 | } | |
411 | ||
412 | if (cnt == 0) { | |
413 | return (0); | |
414 | } | |
415 | ||
416 | /* | |
417 | * handle unaligned tail bytes | |
418 | */ | |
419 | data = 0; | |
420 | for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { | |
421 | data = (data << 8) | *src++; | |
422 | --cnt; | |
423 | } | |
424 | for (; i<4; ++i, ++cp) { | |
425 | data = (data << 8) | (*(uchar *)cp); | |
426 | } | |
427 | ||
428 | return (write_word(info, wp, data)); | |
429 | } | |
430 | ||
431 | /*----------------------------------------------------------------------- | |
432 | * Write a word to Flash, returns: | |
433 | * 0 - OK | |
434 | * 1 - write timeout | |
435 | * 2 - Flash not erased | |
436 | */ | |
437 | static int write_word (flash_info_t *info, ulong dest, ulong data) | |
438 | { | |
439 | vu_long *addr = (vu_long *)dest; | |
440 | ulong start, csr; | |
441 | int flag; | |
442 | ||
443 | /* Check if Flash is (sufficiently) erased */ | |
444 | if ((*addr & data) != data) { | |
445 | return (2); | |
446 | } | |
447 | /* Disable interrupts which might cause a timeout here */ | |
448 | flag = disable_interrupts(); | |
449 | ||
450 | /* Write Command */ | |
451 | *addr = 0x10101010; | |
452 | ||
453 | /* Write Data */ | |
454 | *addr = data; | |
455 | ||
456 | /* re-enable interrupts if necessary */ | |
457 | if (flag) | |
458 | enable_interrupts(); | |
459 | ||
460 | /* data polling for D7 */ | |
461 | start = get_timer (0); | |
462 | flag = 0; | |
463 | while (((csr = *addr) & 0x80808080) != 0x80808080) { | |
6d0f6bcf | 464 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
db2f721f WD |
465 | flag = 1; |
466 | break; | |
467 | } | |
468 | } | |
469 | if (csr & 0x40404040) { | |
470 | printf ("CSR indicates write error (%08lx) at %08lx\n", csr, (ulong)addr); | |
471 | flag = 1; | |
472 | } | |
473 | ||
474 | /* Clear Status Registers Command */ | |
475 | *addr = 0x50505050; | |
476 | /* Reset to read array mode */ | |
477 | *addr = 0xFFFFFFFF; | |
478 | ||
479 | return (flag); | |
480 | } | |
481 | ||
482 | /*----------------------------------------------------------------------- | |
483 | * Clear Block Lock Bit, returns: | |
484 | * 0 - OK | |
485 | * 1 - Timeout | |
486 | */ | |
487 | ||
488 | static int clear_block_lock_bit(vu_long * addr) | |
489 | { | |
490 | ulong start, now; | |
491 | ||
492 | /* Reset Array */ | |
493 | *addr = 0xffffffff; | |
494 | /* Clear Status Register */ | |
495 | *addr = 0x50505050; | |
496 | ||
497 | *addr = 0x60606060; | |
498 | *addr = 0xd0d0d0d0; | |
499 | ||
500 | start = get_timer (0); | |
501 | while(*addr != 0x80808080){ | |
6d0f6bcf | 502 | if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
db2f721f WD |
503 | printf ("Timeout on clearing Block Lock Bit\n"); |
504 | *addr = 0xFFFFFFFF; /* reset bank */ | |
505 | return 1; | |
506 | } | |
507 | } | |
508 | return 0; | |
509 | } |