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6d33c6ac TL |
1 | /* |
2 | * (C) Copyright 2000-2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. | |
6 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) | |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | #include <common.h> | |
28 | ||
29 | #include <asm/immap.h> | |
30 | ||
6d0f6bcf | 31 | #ifndef CONFIG_SYS_FLASH_CFI |
6d33c6ac TL |
32 | typedef unsigned short FLASH_PORT_WIDTH; |
33 | typedef volatile unsigned short FLASH_PORT_WIDTHV; | |
34 | ||
35 | #define FPW FLASH_PORT_WIDTH | |
36 | #define FPWV FLASH_PORT_WIDTHV | |
37 | ||
38 | #define FLASH_CYCLE1 0x5555 | |
39 | #define FLASH_CYCLE2 0x2aaa | |
40 | ||
41 | #define SYNC __asm__("nop") | |
42 | ||
43 | /*----------------------------------------------------------------------- | |
44 | * Functions | |
45 | */ | |
46 | ||
47 | ulong flash_get_size(FPWV * addr, flash_info_t * info); | |
48 | int flash_get_offsets(ulong base, flash_info_t * info); | |
49 | int write_word(flash_info_t * info, FPWV * dest, u16 data); | |
50 | void inline spin_wheel(void); | |
51 | ||
6d0f6bcf | 52 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
6d33c6ac TL |
53 | |
54 | ulong flash_init(void) | |
55 | { | |
56 | ulong size = 0; | |
57 | ulong fbase = 0; | |
58 | ||
6d0f6bcf | 59 | fbase = (ulong) CONFIG_SYS_FLASH_BASE; |
6d33c6ac TL |
60 | flash_get_size((FPWV *) fbase, &flash_info[0]); |
61 | flash_get_offsets((ulong) fbase, &flash_info[0]); | |
62 | fbase += flash_info[0].size; | |
63 | size += flash_info[0].size; | |
64 | ||
65 | /* Protect monitor and environment sectors */ | |
66 | flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
67 | CONFIG_SYS_MONITOR_BASE, |
68 | CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]); | |
6d33c6ac TL |
69 | |
70 | return size; | |
71 | } | |
72 | ||
73 | int flash_get_offsets(ulong base, flash_info_t * info) | |
74 | { | |
75 | int j, k; | |
76 | ||
77 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) { | |
78 | ||
79 | info->start[0] = base; | |
6d0f6bcf JCPV |
80 | for (k = 0, j = 0; j < CONFIG_SYS_SST_SECT; j++, k++) { |
81 | info->start[k + 1] = info->start[k] + CONFIG_SYS_SST_SECTSZ; | |
6d33c6ac TL |
82 | info->protect[k] = 0; |
83 | } | |
84 | } | |
85 | ||
86 | return ERR_OK; | |
87 | } | |
88 | ||
89 | void flash_print_info(flash_info_t * info) | |
90 | { | |
91 | int i; | |
92 | ||
93 | switch (info->flash_id & FLASH_VENDMASK) { | |
94 | case FLASH_MAN_SST: | |
95 | printf("SST "); | |
96 | break; | |
97 | default: | |
98 | printf("Unknown Vendor "); | |
99 | break; | |
100 | } | |
101 | ||
102 | switch (info->flash_id & FLASH_TYPEMASK) { | |
103 | case FLASH_SST6401B: | |
104 | printf("SST39VF6401B\n"); | |
105 | break; | |
106 | default: | |
107 | printf("Unknown Chip Type\n"); | |
108 | return; | |
109 | } | |
110 | ||
111 | if (info->size > 0x100000) { | |
112 | int remainder; | |
113 | ||
114 | printf(" Size: %ld", info->size >> 20); | |
115 | ||
116 | remainder = (info->size % 0x100000); | |
117 | if (remainder) { | |
118 | remainder >>= 10; | |
119 | remainder = (int)((float) | |
120 | (((float)remainder / (float)1024) * | |
121 | 10000)); | |
122 | printf(".%d ", remainder); | |
123 | } | |
124 | ||
125 | printf("MB in %d Sectors\n", info->sector_count); | |
126 | } else | |
127 | printf(" Size: %ld KB in %d Sectors\n", | |
128 | info->size >> 10, info->sector_count); | |
129 | ||
130 | printf(" Sector Start Addresses:"); | |
131 | for (i = 0; i < info->sector_count; ++i) { | |
132 | if ((i % 5) == 0) | |
133 | printf("\n "); | |
134 | printf(" %08lX%s", | |
135 | info->start[i], info->protect[i] ? " (RO)" : " "); | |
136 | } | |
137 | printf("\n"); | |
138 | } | |
139 | ||
140 | /* | |
141 | * The following code cannot be run from FLASH! | |
142 | */ | |
143 | ulong flash_get_size(FPWV * addr, flash_info_t * info) | |
144 | { | |
145 | u16 value; | |
146 | ||
147 | addr[FLASH_CYCLE1] = (FPWV) 0x00AA00AA; /* for Atmel, Intel ignores this */ | |
148 | addr[FLASH_CYCLE2] = (FPWV) 0x00550055; /* for Atmel, Intel ignores this */ | |
149 | addr[FLASH_CYCLE1] = (FPWV) 0x00900090; /* selects Intel or Atmel */ | |
150 | ||
151 | switch (addr[0] & 0xffff) { | |
152 | case (u8) SST_MANUFACT: | |
153 | info->flash_id = FLASH_MAN_SST; | |
154 | value = addr[1]; | |
155 | break; | |
156 | default: | |
157 | printf("Unknown Flash\n"); | |
158 | info->flash_id = FLASH_UNKNOWN; | |
159 | info->sector_count = 0; | |
160 | info->size = 0; | |
161 | ||
162 | *addr = (FPW) 0x00F000F0; | |
163 | return (0); /* no or unknown flash */ | |
164 | } | |
165 | ||
166 | switch (value) { | |
167 | case (u16) SST_ID_xF6401B: | |
168 | info->flash_id += FLASH_SST6401B; | |
169 | break; | |
170 | default: | |
171 | info->flash_id = FLASH_UNKNOWN; | |
172 | break; | |
173 | } | |
174 | ||
175 | info->sector_count = 0; | |
176 | info->size = 0; | |
6d0f6bcf JCPV |
177 | info->sector_count = CONFIG_SYS_SST_SECT; |
178 | info->size = CONFIG_SYS_SST_SECT * CONFIG_SYS_SST_SECTSZ; | |
6d33c6ac TL |
179 | |
180 | /* reset ID mode */ | |
181 | *addr = (FPWV) 0x00F000F0; | |
182 | ||
6d0f6bcf | 183 | if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { |
6d33c6ac | 184 | printf("** ERROR: sector count %d > max (%d) **\n", |
6d0f6bcf JCPV |
185 | info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); |
186 | info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; | |
6d33c6ac TL |
187 | } |
188 | ||
189 | return (info->size); | |
190 | } | |
191 | ||
192 | int flash_erase(flash_info_t * info, int s_first, int s_last) | |
193 | { | |
194 | FPWV *addr; | |
195 | int flag, prot, sect, count; | |
196 | ulong type, start, last; | |
197 | int rcode = 0, flashtype = 0; | |
198 | ||
199 | if ((s_first < 0) || (s_first > s_last)) { | |
200 | if (info->flash_id == FLASH_UNKNOWN) | |
201 | printf("- missing\n"); | |
202 | else | |
203 | printf("- no sectors to erase\n"); | |
204 | return 1; | |
205 | } | |
206 | ||
207 | type = (info->flash_id & FLASH_VENDMASK); | |
208 | ||
209 | switch (type) { | |
210 | case FLASH_MAN_SST: | |
211 | flashtype = 1; | |
212 | break; | |
213 | default: | |
214 | type = (info->flash_id & FLASH_VENDMASK); | |
215 | printf("Can't erase unknown flash type %08lx - aborted\n", | |
216 | info->flash_id); | |
217 | return 1; | |
218 | } | |
219 | ||
220 | prot = 0; | |
221 | for (sect = s_first; sect <= s_last; ++sect) { | |
222 | if (info->protect[sect]) { | |
223 | prot++; | |
224 | } | |
225 | } | |
226 | ||
227 | if (prot) | |
228 | printf("- Warning: %d protected sectors will not be erased!\n", | |
229 | prot); | |
230 | else | |
231 | printf("\n"); | |
232 | ||
233 | flag = disable_interrupts(); | |
234 | ||
235 | start = get_timer(0); | |
236 | last = start; | |
237 | ||
6d0f6bcf | 238 | if ((s_last - s_first) == (CONFIG_SYS_SST_SECT - 1)) { |
6d33c6ac TL |
239 | if (prot == 0) { |
240 | addr = (FPWV *) info->start[0]; | |
241 | ||
242 | addr[FLASH_CYCLE1] = 0x00AA; /* unlock */ | |
243 | addr[FLASH_CYCLE2] = 0x0055; /* unlock */ | |
244 | addr[FLASH_CYCLE1] = 0x0080; /* erase mode */ | |
245 | addr[FLASH_CYCLE1] = 0x00AA; /* unlock */ | |
246 | addr[FLASH_CYCLE2] = 0x0055; /* unlock */ | |
247 | *addr = 0x0030; /* erase chip */ | |
248 | ||
249 | count = 0; | |
250 | start = get_timer(0); | |
251 | ||
252 | while ((*addr & 0x0080) != 0x0080) { | |
253 | if (count++ > 0x10000) { | |
254 | spin_wheel(); | |
255 | count = 0; | |
256 | } | |
257 | ||
6d0f6bcf | 258 | if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
6d33c6ac TL |
259 | printf("Timeout\n"); |
260 | *addr = 0x00F0; /* reset to read mode */ | |
261 | ||
262 | return 1; | |
263 | } | |
264 | } | |
265 | ||
266 | *addr = 0x00F0; /* reset to read mode */ | |
267 | ||
268 | printf("\b. done\n"); | |
269 | ||
270 | if (flag) | |
271 | enable_interrupts(); | |
272 | ||
273 | return 0; | |
6d0f6bcf | 274 | } else if (prot == CONFIG_SYS_SST_SECT) { |
6d33c6ac TL |
275 | return 1; |
276 | } | |
277 | } | |
278 | ||
279 | /* Start erase on unprotected sectors */ | |
280 | for (sect = s_first; sect <= s_last; sect++) { | |
281 | if (info->protect[sect] == 0) { /* not protected */ | |
282 | ||
283 | addr = (FPWV *) (info->start[sect]); | |
284 | ||
285 | printf("."); | |
286 | ||
287 | /* arm simple, non interrupt dependent timer */ | |
288 | start = get_timer(0); | |
289 | ||
290 | switch (flashtype) { | |
291 | case 1: | |
292 | { | |
293 | FPWV *base; /* first address in bank */ | |
294 | ||
295 | flag = disable_interrupts(); | |
296 | ||
6d0f6bcf | 297 | base = (FPWV *) (CONFIG_SYS_FLASH_BASE); /* First sector */ |
6d33c6ac TL |
298 | |
299 | base[FLASH_CYCLE1] = 0x00AA; /* unlock */ | |
300 | base[FLASH_CYCLE2] = 0x0055; /* unlock */ | |
301 | base[FLASH_CYCLE1] = 0x0080; /* erase mode */ | |
302 | base[FLASH_CYCLE1] = 0x00AA; /* unlock */ | |
303 | base[FLASH_CYCLE2] = 0x0055; /* unlock */ | |
304 | *addr = 0x0050; /* erase sector */ | |
305 | ||
306 | if (flag) | |
307 | enable_interrupts(); | |
308 | ||
309 | while ((*addr & 0x0080) != 0x0080) { | |
310 | if (get_timer(start) > | |
6d0f6bcf | 311 | CONFIG_SYS_FLASH_ERASE_TOUT) { |
6d33c6ac TL |
312 | printf("Timeout\n"); |
313 | *addr = 0x00F0; /* reset to read mode */ | |
314 | ||
315 | rcode = 1; | |
316 | break; | |
317 | } | |
318 | } | |
319 | ||
320 | *addr = 0x00F0; /* reset to read mode */ | |
321 | break; | |
322 | } | |
323 | } /* switch (flashtype) */ | |
324 | } | |
325 | } | |
326 | printf(" done\n"); | |
327 | ||
328 | if (flag) | |
329 | enable_interrupts(); | |
330 | ||
331 | return rcode; | |
332 | } | |
333 | ||
334 | int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) | |
335 | { | |
336 | ulong wp, count; | |
337 | u16 data; | |
338 | int rc, port_width; | |
339 | ||
340 | if (info->flash_id == FLASH_UNKNOWN) | |
341 | return 4; | |
342 | ||
343 | /* get lower word aligned address */ | |
344 | wp = addr; | |
345 | port_width = sizeof(FPW); | |
346 | ||
347 | /* handle unaligned start bytes */ | |
348 | if (wp & 1) { | |
349 | data = *((FPWV *) wp); | |
350 | data = (data << 8) | *src; | |
351 | ||
352 | if ((rc = write_word(info, (FPWV *) wp, data)) != 0) | |
353 | return (rc); | |
354 | ||
355 | wp++; | |
356 | cnt -= 1; | |
357 | src++; | |
358 | } | |
359 | ||
360 | while (cnt >= 2) { | |
361 | /* | |
362 | * handle word aligned part | |
363 | */ | |
364 | count = 0; | |
365 | data = *((FPWV *) src); | |
366 | ||
367 | if ((rc = write_word(info, (FPWV *) wp, data)) != 0) | |
368 | return (rc); | |
369 | ||
370 | wp += 2; | |
371 | src += 2; | |
372 | cnt -= 2; | |
373 | ||
374 | if (count++ > 0x800) { | |
375 | spin_wheel(); | |
376 | count = 0; | |
377 | } | |
378 | } | |
379 | /* handle word aligned part */ | |
380 | if (cnt) { | |
381 | /* handle word aligned part */ | |
382 | count = 0; | |
383 | data = *((FPWV *) wp); | |
384 | ||
385 | data = (data & 0x00FF) | (*src << 8); | |
386 | ||
387 | if ((rc = write_word(info, (FPWV *) wp, data)) != 0) | |
388 | return (rc); | |
389 | ||
390 | wp++; | |
391 | src++; | |
392 | cnt -= 1; | |
393 | if (count++ > 0x800) { | |
394 | spin_wheel(); | |
395 | count = 0; | |
396 | } | |
397 | } | |
398 | ||
399 | if (cnt == 0) | |
400 | return ERR_OK; | |
401 | ||
402 | return ERR_OK; | |
403 | } | |
404 | ||
405 | /*----------------------------------------------------------------------- | |
406 | * Write a word to Flash | |
407 | * A word is 16 bits, whichever the bus width of the flash bank | |
408 | * (not an individual chip) is. | |
409 | * | |
410 | * returns: | |
411 | * 0 - OK | |
412 | * 1 - write timeout | |
413 | * 2 - Flash not erased | |
414 | */ | |
415 | int write_word(flash_info_t * info, FPWV * dest, u16 data) | |
416 | { | |
417 | ulong start; | |
418 | int flag; | |
419 | int res = 0; /* result, assume success */ | |
420 | FPWV *base; /* first address in flash bank */ | |
421 | ||
422 | /* Check if Flash is (sufficiently) erased */ | |
423 | if ((*dest & (u8) data) != (u8) data) { | |
424 | return (2); | |
425 | } | |
426 | ||
6d0f6bcf | 427 | base = (FPWV *) (CONFIG_SYS_FLASH_BASE); |
6d33c6ac TL |
428 | |
429 | /* Disable interrupts which might cause a timeout here */ | |
430 | flag = disable_interrupts(); | |
431 | ||
432 | base[FLASH_CYCLE1] = (u8) 0x00AA00AA; /* unlock */ | |
433 | base[FLASH_CYCLE2] = (u8) 0x00550055; /* unlock */ | |
434 | base[FLASH_CYCLE1] = (u8) 0x00A000A0; /* selects program mode */ | |
435 | ||
436 | *dest = data; /* start programming the data */ | |
437 | ||
438 | /* re-enable interrupts if necessary */ | |
439 | if (flag) | |
440 | enable_interrupts(); | |
441 | ||
442 | start = get_timer(0); | |
443 | ||
444 | /* data polling for D7 */ | |
445 | while (res == 0 | |
446 | && (*dest & (u8) 0x00800080) != (data & (u8) 0x00800080)) { | |
6d0f6bcf | 447 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
6d33c6ac TL |
448 | *dest = (u8) 0x00F000F0; /* reset bank */ |
449 | res = 1; | |
450 | } | |
451 | } | |
452 | ||
453 | *dest++ = (u8) 0x00F000F0; /* reset bank */ | |
454 | ||
455 | return (res); | |
456 | } | |
457 | ||
458 | void inline spin_wheel(void) | |
459 | { | |
460 | static int p = 0; | |
461 | static char w[] = "\\/-"; | |
462 | ||
463 | printf("\010%c", w[p]); | |
464 | (++p == 3) ? (p = 0) : 0; | |
465 | } | |
466 | ||
467 | #endif |