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46578cc0 SR |
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 | /* | |
25 | * Modified 4/5/2001 | |
26 | * Wait for completion of each sector erase command issued | |
27 | * 4/5/2001 | |
28 | * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com | |
29 | */ | |
30 | ||
31 | #include <common.h> | |
32 | #include <ppc4xx.h> | |
33 | #include <asm/processor.h> | |
34 | ||
35 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ | |
36 | ||
37 | /*----------------------------------------------------------------------- | |
38 | * Functions | |
39 | */ | |
40 | static ulong flash_get_size (vu_long *addr, flash_info_t *info); | |
41 | static int write_word (flash_info_t *info, ulong dest, ulong data); | |
42 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
43 | ||
44 | #ifdef CONFIG_ADCIOP | |
45 | #define ADDR0 0x0aa9 | |
46 | #define ADDR1 0x0556 | |
47 | #define FLASH_WORD_SIZE unsigned char | |
48 | #endif | |
49 | ||
50 | #ifdef CONFIG_CPCI405 | |
51 | #define ADDR0 0x5555 | |
52 | #define ADDR1 0x2aaa | |
53 | #define FLASH_WORD_SIZE unsigned short | |
54 | #endif | |
55 | ||
56 | #ifdef CONFIG_WALNUT405 | |
57 | #define ADDR0 0x5555 | |
58 | #define ADDR1 0x2aaa | |
59 | #define FLASH_WORD_SIZE unsigned char | |
60 | #endif | |
61 | ||
62 | #ifdef CONFIG_BUBINGA405EP | |
63 | #define ADDR0 0x5555 | |
64 | #define ADDR1 0x2aaa | |
65 | #define FLASH_WORD_SIZE unsigned char | |
66 | #endif | |
67 | ||
68 | ||
69 | /*----------------------------------------------------------------------- | |
70 | */ | |
71 | ||
72 | unsigned long flash_init (void) | |
73 | { | |
74 | unsigned long size_b0, size_b1; | |
75 | int i; | |
8bde7f77 WD |
76 | uint pbcr; |
77 | unsigned long base_b0, base_b1; | |
46578cc0 SR |
78 | |
79 | /* Init: no FLASHes known */ | |
50015ab3 | 80 | for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { |
46578cc0 SR |
81 | flash_info[i].flash_id = FLASH_UNKNOWN; |
82 | } | |
83 | ||
84 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
85 | ||
50015ab3 | 86 | size_b0 = flash_get_size ((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); |
46578cc0 SR |
87 | |
88 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
89 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
50015ab3 | 90 | size_b0, size_b0 << 20); |
46578cc0 SR |
91 | } |
92 | ||
93 | /* Only one bank */ | |
50015ab3 WD |
94 | if (CFG_MAX_FLASH_BANKS == 1) { |
95 | /* Setup offsets */ | |
96 | flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]); | |
97 | ||
98 | /* Monitor protection ON by default */ | |
99 | (void) flash_protect (FLAG_PROTECT_SET, | |
100 | FLASH_BASE0_PRELIM, | |
101 | FLASH_BASE0_PRELIM + CFG_MONITOR_LEN - 1, | |
102 | &flash_info[0]); | |
103 | /* Also protect sector containing initial power-up instruction */ | |
104 | (void) flash_protect (FLAG_PROTECT_SET, | |
105 | 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]); | |
106 | size_b1 = 0; | |
107 | flash_info[0].size = size_b0; | |
108 | } | |
46578cc0 SR |
109 | |
110 | /* 2 banks */ | |
50015ab3 WD |
111 | else { |
112 | size_b1 = flash_get_size ((vu_long *) FLASH_BASE1_PRELIM, &flash_info[1]); | |
113 | ||
114 | /* Re-do sizing to get full correct info */ | |
115 | ||
116 | if (size_b1) { | |
117 | mtdcr (ebccfga, pb0cr); | |
118 | pbcr = mfdcr (ebccfgd); | |
119 | mtdcr (ebccfga, pb0cr); | |
120 | base_b1 = -size_b1; | |
121 | pbcr = (pbcr & 0x0001ffff) | base_b1 | | |
122 | (((size_b1 / 1024 / 1024) - 1) << 17); | |
123 | mtdcr (ebccfgd, pbcr); | |
124 | /* printf("pb1cr = %x\n", pbcr); */ | |
125 | } | |
126 | ||
127 | if (size_b0) { | |
128 | mtdcr (ebccfga, pb1cr); | |
129 | pbcr = mfdcr (ebccfgd); | |
130 | mtdcr (ebccfga, pb1cr); | |
131 | base_b0 = base_b1 - size_b0; | |
132 | pbcr = (pbcr & 0x0001ffff) | base_b0 | | |
133 | (((size_b0 / 1024 / 1024) - 1) << 17); | |
134 | mtdcr (ebccfgd, pbcr); | |
135 | /* printf("pb0cr = %x\n", pbcr); */ | |
136 | } | |
137 | ||
138 | size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]); | |
139 | ||
140 | flash_get_offsets (base_b0, &flash_info[0]); | |
141 | ||
142 | /* monitor protection ON by default */ | |
143 | (void) flash_protect (FLAG_PROTECT_SET, | |
144 | base_b0 + size_b0 - CFG_MONITOR_LEN, | |
145 | base_b0 + size_b0 - 1, &flash_info[0]); | |
146 | /* Also protect sector containing initial power-up instruction */ | |
147 | /* (flash_protect() checks address range - other call ignored) */ | |
148 | (void) flash_protect (FLAG_PROTECT_SET, | |
149 | 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]); | |
150 | (void) flash_protect (FLAG_PROTECT_SET, | |
151 | 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]); | |
152 | ||
153 | if (size_b1) { | |
154 | /* Re-do sizing to get full correct info */ | |
155 | size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]); | |
156 | ||
157 | flash_get_offsets (base_b1, &flash_info[1]); | |
158 | ||
159 | /* monitor protection ON by default */ | |
160 | (void) flash_protect (FLAG_PROTECT_SET, | |
161 | base_b1 + size_b1 - CFG_MONITOR_LEN, | |
162 | base_b1 + size_b1 - 1, | |
163 | &flash_info[1]); | |
164 | /* monitor protection OFF by default (one is enough) */ | |
165 | (void) flash_protect (FLAG_PROTECT_CLEAR, | |
166 | base_b0 + size_b0 - CFG_MONITOR_LEN, | |
167 | base_b0 + size_b0 - 1, | |
168 | &flash_info[0]); | |
169 | } else { | |
170 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
171 | flash_info[1].sector_count = -1; | |
172 | } | |
173 | ||
174 | flash_info[0].size = size_b0; | |
175 | flash_info[1].size = size_b1; | |
176 | } /* else 2 banks */ | |
46578cc0 SR |
177 | return (size_b0 + size_b1); |
178 | } | |
179 | ||
180 | ||
46578cc0 SR |
181 | /*----------------------------------------------------------------------- |
182 | */ | |
50015ab3 | 183 | static void flash_get_offsets (ulong base, flash_info_t * info) |
46578cc0 SR |
184 | { |
185 | int i; | |
186 | ||
187 | /* set up sector start address table */ | |
8bde7f77 | 188 | if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) || |
50015ab3 WD |
189 | (info->flash_id == FLASH_AM040)) { |
190 | for (i = 0; i < info->sector_count; i++) | |
191 | info->start[i] = base + (i * 0x00010000); | |
8bde7f77 | 192 | } else { |
50015ab3 WD |
193 | if (info->flash_id & FLASH_BTYPE) { |
194 | /* set sector offsets for bottom boot block type */ | |
195 | info->start[0] = base + 0x00000000; | |
196 | info->start[1] = base + 0x00004000; | |
197 | info->start[2] = base + 0x00006000; | |
198 | info->start[3] = base + 0x00008000; | |
199 | for (i = 4; i < info->sector_count; i++) { | |
200 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
201 | } | |
202 | } else { | |
203 | /* set sector offsets for top boot block type */ | |
204 | i = info->sector_count - 1; | |
205 | info->start[i--] = base + info->size - 0x00004000; | |
206 | info->start[i--] = base + info->size - 0x00006000; | |
207 | info->start[i--] = base + info->size - 0x00008000; | |
208 | for (; i >= 0; i--) { | |
209 | info->start[i] = base + i * 0x00010000; | |
210 | } | |
46578cc0 | 211 | } |
46578cc0 SR |
212 | } |
213 | } | |
214 | ||
215 | /*----------------------------------------------------------------------- | |
216 | */ | |
50015ab3 | 217 | void flash_print_info (flash_info_t * info) |
46578cc0 SR |
218 | { |
219 | int i; | |
8bde7f77 WD |
220 | int k; |
221 | int size; | |
222 | int erased; | |
223 | volatile unsigned long *flash; | |
46578cc0 SR |
224 | |
225 | if (info->flash_id == FLASH_UNKNOWN) { | |
226 | printf ("missing or unknown FLASH type\n"); | |
227 | return; | |
228 | } | |
229 | ||
230 | switch (info->flash_id & FLASH_VENDMASK) { | |
231 | case FLASH_MAN_AMD: printf ("AMD "); break; | |
232 | case FLASH_MAN_FUJ: printf ("FUJITSU "); break; | |
233 | case FLASH_MAN_SST: printf ("SST "); break; | |
234 | default: printf ("Unknown Vendor "); break; | |
235 | } | |
236 | ||
237 | switch (info->flash_id & FLASH_TYPEMASK) { | |
238 | case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n"); | |
239 | break; | |
240 | case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); | |
241 | break; | |
242 | case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); | |
243 | break; | |
244 | case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); | |
245 | break; | |
246 | case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); | |
247 | break; | |
248 | case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); | |
249 | break; | |
250 | case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); | |
251 | break; | |
252 | case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); | |
253 | break; | |
254 | case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); | |
255 | break; | |
256 | case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n"); | |
257 | break; | |
258 | case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n"); | |
259 | break; | |
260 | default: printf ("Unknown Chip Type\n"); | |
261 | break; | |
262 | } | |
263 | ||
264 | printf (" Size: %ld KB in %d Sectors\n", | |
265 | info->size >> 10, info->sector_count); | |
266 | ||
267 | printf (" Sector Start Addresses:"); | |
50015ab3 | 268 | for (i = 0; i < info->sector_count; ++i) { |
8bde7f77 WD |
269 | /* |
270 | * Check if whole sector is erased | |
271 | */ | |
50015ab3 WD |
272 | if (i != (info->sector_count - 1)) |
273 | size = info->start[i + 1] - info->start[i]; | |
8bde7f77 | 274 | else |
50015ab3 | 275 | size = info->start[0] + info->size - info->start[i]; |
8bde7f77 | 276 | erased = 1; |
50015ab3 WD |
277 | flash = (volatile unsigned long *) info->start[i]; |
278 | size = size >> 2; /* divide by 4 for longword access */ | |
279 | for (k = 0; k < size; k++) { | |
280 | if (*flash++ != 0xffffffff) { | |
281 | erased = 0; | |
282 | break; | |
283 | } | |
284 | } | |
46578cc0 SR |
285 | |
286 | if ((i % 5) == 0) | |
287 | printf ("\n "); | |
50015ab3 | 288 | #if 0 /* test-only */ |
46578cc0 | 289 | printf (" %08lX%s", |
50015ab3 | 290 | info->start[i], info->protect[i] ? " (RO)" : " " |
46578cc0 SR |
291 | #else |
292 | printf (" %08lX%s%s", | |
293 | info->start[i], | |
50015ab3 | 294 | erased ? " E" : " ", info->protect[i] ? "RO " : " " |
46578cc0 | 295 | #endif |
50015ab3 | 296 | ); |
46578cc0 SR |
297 | } |
298 | printf ("\n"); | |
299 | return; | |
300 | } | |
301 | ||
302 | /*----------------------------------------------------------------------- | |
303 | */ | |
304 | ||
305 | ||
306 | /*----------------------------------------------------------------------- | |
307 | */ | |
308 | ||
309 | /* | |
310 | * The following code cannot be run from FLASH! | |
311 | */ | |
50015ab3 | 312 | static ulong flash_get_size (vu_long * addr, flash_info_t * info) |
46578cc0 SR |
313 | { |
314 | short i; | |
315 | FLASH_WORD_SIZE value; | |
50015ab3 WD |
316 | ulong base = (ulong) addr; |
317 | volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr; | |
46578cc0 SR |
318 | |
319 | /* Write auto select command: read Manufacturer ID */ | |
50015ab3 WD |
320 | addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; |
321 | addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; | |
322 | addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00900090; | |
46578cc0 SR |
323 | |
324 | #ifdef CONFIG_ADCIOP | |
325 | value = addr2[2]; | |
326 | #else | |
327 | value = addr2[0]; | |
328 | #endif | |
329 | ||
330 | switch (value) { | |
50015ab3 | 331 | case (FLASH_WORD_SIZE) AMD_MANUFACT: |
46578cc0 SR |
332 | info->flash_id = FLASH_MAN_AMD; |
333 | break; | |
50015ab3 | 334 | case (FLASH_WORD_SIZE) FUJ_MANUFACT: |
46578cc0 SR |
335 | info->flash_id = FLASH_MAN_FUJ; |
336 | break; | |
50015ab3 | 337 | case (FLASH_WORD_SIZE) SST_MANUFACT: |
46578cc0 SR |
338 | info->flash_id = FLASH_MAN_SST; |
339 | break; | |
340 | default: | |
341 | info->flash_id = FLASH_UNKNOWN; | |
342 | info->sector_count = 0; | |
343 | info->size = 0; | |
50015ab3 | 344 | return (0); /* no or unknown flash */ |
46578cc0 SR |
345 | } |
346 | ||
347 | #ifdef CONFIG_ADCIOP | |
50015ab3 | 348 | value = addr2[0]; /* device ID */ |
8bde7f77 | 349 | /* printf("\ndev_code=%x\n", value); */ |
46578cc0 | 350 | #else |
50015ab3 | 351 | value = addr2[1]; /* device ID */ |
46578cc0 SR |
352 | #endif |
353 | ||
354 | switch (value) { | |
50015ab3 | 355 | case (FLASH_WORD_SIZE) AMD_ID_F040B: |
8bde7f77 | 356 | info->flash_id += FLASH_AM040; |
46578cc0 | 357 | info->sector_count = 8; |
50015ab3 | 358 | info->size = 0x0080000; /* => 512 ko */ |
46578cc0 | 359 | break; |
50015ab3 | 360 | case (FLASH_WORD_SIZE) AMD_ID_LV400T: |
46578cc0 SR |
361 | info->flash_id += FLASH_AM400T; |
362 | info->sector_count = 11; | |
363 | info->size = 0x00080000; | |
50015ab3 | 364 | break; /* => 0.5 MB */ |
46578cc0 | 365 | |
50015ab3 | 366 | case (FLASH_WORD_SIZE) AMD_ID_LV400B: |
46578cc0 SR |
367 | info->flash_id += FLASH_AM400B; |
368 | info->sector_count = 11; | |
369 | info->size = 0x00080000; | |
50015ab3 | 370 | break; /* => 0.5 MB */ |
46578cc0 | 371 | |
50015ab3 | 372 | case (FLASH_WORD_SIZE) AMD_ID_LV800T: |
46578cc0 SR |
373 | info->flash_id += FLASH_AM800T; |
374 | info->sector_count = 19; | |
375 | info->size = 0x00100000; | |
50015ab3 | 376 | break; /* => 1 MB */ |
46578cc0 | 377 | |
50015ab3 | 378 | case (FLASH_WORD_SIZE) AMD_ID_LV800B: |
46578cc0 SR |
379 | info->flash_id += FLASH_AM800B; |
380 | info->sector_count = 19; | |
381 | info->size = 0x00100000; | |
50015ab3 | 382 | break; /* => 1 MB */ |
46578cc0 | 383 | |
50015ab3 | 384 | case (FLASH_WORD_SIZE) AMD_ID_LV160T: |
46578cc0 SR |
385 | info->flash_id += FLASH_AM160T; |
386 | info->sector_count = 35; | |
387 | info->size = 0x00200000; | |
50015ab3 | 388 | break; /* => 2 MB */ |
46578cc0 | 389 | |
50015ab3 | 390 | case (FLASH_WORD_SIZE) AMD_ID_LV160B: |
46578cc0 SR |
391 | info->flash_id += FLASH_AM160B; |
392 | info->sector_count = 35; | |
393 | info->size = 0x00200000; | |
50015ab3 WD |
394 | break; /* => 2 MB */ |
395 | #if 0 /* enable when device IDs are available */ | |
396 | case (FLASH_WORD_SIZE) AMD_ID_LV320T: | |
46578cc0 SR |
397 | info->flash_id += FLASH_AM320T; |
398 | info->sector_count = 67; | |
399 | info->size = 0x00400000; | |
50015ab3 | 400 | break; /* => 4 MB */ |
46578cc0 | 401 | |
50015ab3 | 402 | case (FLASH_WORD_SIZE) AMD_ID_LV320B: |
46578cc0 SR |
403 | info->flash_id += FLASH_AM320B; |
404 | info->sector_count = 67; | |
405 | info->size = 0x00400000; | |
50015ab3 | 406 | break; /* => 4 MB */ |
46578cc0 | 407 | #endif |
50015ab3 | 408 | case (FLASH_WORD_SIZE) SST_ID_xF800A: |
46578cc0 SR |
409 | info->flash_id += FLASH_SST800A; |
410 | info->sector_count = 16; | |
411 | info->size = 0x00100000; | |
50015ab3 | 412 | break; /* => 1 MB */ |
46578cc0 | 413 | |
50015ab3 | 414 | case (FLASH_WORD_SIZE) SST_ID_xF160A: |
46578cc0 SR |
415 | info->flash_id += FLASH_SST160A; |
416 | info->sector_count = 32; | |
417 | info->size = 0x00200000; | |
50015ab3 | 418 | break; /* => 2 MB */ |
46578cc0 SR |
419 | |
420 | default: | |
421 | info->flash_id = FLASH_UNKNOWN; | |
50015ab3 | 422 | return (0); /* => no or unknown flash */ |
46578cc0 SR |
423 | |
424 | } | |
425 | ||
426 | /* set up sector start address table */ | |
8bde7f77 | 427 | if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) || |
50015ab3 WD |
428 | (info->flash_id == FLASH_AM040)) { |
429 | for (i = 0; i < info->sector_count; i++) | |
430 | info->start[i] = base + (i * 0x00010000); | |
8bde7f77 | 431 | } else { |
50015ab3 WD |
432 | if (info->flash_id & FLASH_BTYPE) { |
433 | /* set sector offsets for bottom boot block type */ | |
434 | info->start[0] = base + 0x00000000; | |
435 | info->start[1] = base + 0x00004000; | |
436 | info->start[2] = base + 0x00006000; | |
437 | info->start[3] = base + 0x00008000; | |
438 | for (i = 4; i < info->sector_count; i++) { | |
439 | info->start[i] = base + (i * 0x00010000) - 0x00030000; | |
440 | } | |
441 | } else { | |
442 | /* set sector offsets for top boot block type */ | |
443 | i = info->sector_count - 1; | |
444 | info->start[i--] = base + info->size - 0x00004000; | |
445 | info->start[i--] = base + info->size - 0x00006000; | |
446 | info->start[i--] = base + info->size - 0x00008000; | |
447 | for (; i >= 0; i--) { | |
448 | info->start[i] = base + i * 0x00010000; | |
449 | } | |
46578cc0 | 450 | } |
46578cc0 SR |
451 | } |
452 | ||
453 | /* check for protected sectors */ | |
454 | for (i = 0; i < info->sector_count; i++) { | |
455 | /* read sector protection at sector address, (A7 .. A0) = 0x02 */ | |
456 | /* D0 = 1 if protected */ | |
457 | #ifdef CONFIG_ADCIOP | |
50015ab3 | 458 | addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]); |
46578cc0 SR |
459 | info->protect[i] = addr2[4] & 1; |
460 | #else | |
50015ab3 | 461 | addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]); |
8bde7f77 | 462 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) |
50015ab3 | 463 | info->protect[i] = 0; |
8bde7f77 | 464 | else |
50015ab3 | 465 | info->protect[i] = addr2[2] & 1; |
46578cc0 SR |
466 | #endif |
467 | } | |
468 | ||
469 | /* | |
470 | * Prevent writes to uninitialized FLASH. | |
471 | */ | |
472 | if (info->flash_id != FLASH_UNKNOWN) { | |
50015ab3 | 473 | #if 0 /* test-only */ |
46578cc0 | 474 | #ifdef CONFIG_ADCIOP |
50015ab3 | 475 | addr2 = (volatile unsigned char *) info->start[0]; |
8bde7f77 WD |
476 | addr2[ADDR0] = 0xAA; |
477 | addr2[ADDR1] = 0x55; | |
50015ab3 | 478 | addr2[ADDR0] = 0xF0; /* reset bank */ |
46578cc0 | 479 | #else |
50015ab3 WD |
480 | addr2 = (FLASH_WORD_SIZE *) info->start[0]; |
481 | *addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ | |
46578cc0 | 482 | #endif |
50015ab3 WD |
483 | #else /* test-only */ |
484 | addr2 = (FLASH_WORD_SIZE *) info->start[0]; | |
485 | *addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ | |
46578cc0 SR |
486 | #endif /* test-only */ |
487 | } | |
488 | ||
489 | return (info->size); | |
490 | } | |
491 | ||
50015ab3 | 492 | int wait_for_DQ7 (flash_info_t * info, int sect) |
46578cc0 SR |
493 | { |
494 | ulong start, now, last; | |
50015ab3 | 495 | volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[sect]); |
46578cc0 SR |
496 | |
497 | start = get_timer (0); | |
50015ab3 WD |
498 | last = 0; |
499 | while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) != (FLASH_WORD_SIZE) 0x00800080) { | |
500 | if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) { | |
b828dda6 SR |
501 | printf ("Timeout\n"); |
502 | return -1; | |
503 | } | |
504 | /* show that we're waiting */ | |
50015ab3 | 505 | if ((now - last) > 1000) { /* every second */ |
b828dda6 SR |
506 | putc ('.'); |
507 | last = now; | |
508 | } | |
8bde7f77 | 509 | } |
46578cc0 SR |
510 | return 0; |
511 | } | |
512 | ||
513 | /*----------------------------------------------------------------------- | |
514 | */ | |
515 | ||
50015ab3 | 516 | int flash_erase (flash_info_t * info, int s_first, int s_last) |
46578cc0 | 517 | { |
50015ab3 | 518 | volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]); |
46578cc0 SR |
519 | volatile FLASH_WORD_SIZE *addr2; |
520 | int flag, prot, sect, l_sect; | |
521 | int i; | |
522 | ||
523 | if ((s_first < 0) || (s_first > s_last)) { | |
524 | if (info->flash_id == FLASH_UNKNOWN) { | |
525 | printf ("- missing\n"); | |
526 | } else { | |
527 | printf ("- no sectors to erase\n"); | |
528 | } | |
529 | return 1; | |
530 | } | |
531 | ||
532 | if (info->flash_id == FLASH_UNKNOWN) { | |
533 | printf ("Can't erase unknown flash type - aborted\n"); | |
534 | return 1; | |
535 | } | |
536 | ||
537 | prot = 0; | |
50015ab3 | 538 | for (sect = s_first; sect <= s_last; ++sect) { |
46578cc0 SR |
539 | if (info->protect[sect]) { |
540 | prot++; | |
541 | } | |
542 | } | |
543 | ||
544 | if (prot) { | |
50015ab3 | 545 | printf ("- Warning: %d protected sectors will not be erased!\n", prot); |
46578cc0 SR |
546 | } else { |
547 | printf ("\n"); | |
548 | } | |
549 | ||
550 | l_sect = -1; | |
551 | ||
552 | /* Disable interrupts which might cause a timeout here */ | |
50015ab3 | 553 | flag = disable_interrupts (); |
46578cc0 SR |
554 | |
555 | /* Start erase on unprotected sectors */ | |
50015ab3 | 556 | for (sect = s_first; sect <= s_last; sect++) { |
46578cc0 | 557 | if (info->protect[sect] == 0) { /* not protected */ |
50015ab3 WD |
558 | addr2 = (FLASH_WORD_SIZE *) (info->start[sect]); |
559 | printf ("Erasing sector %p\n", addr2); /* CLH */ | |
560 | ||
561 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) { | |
562 | addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; | |
563 | addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; | |
564 | addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080; | |
565 | addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; | |
566 | addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; | |
567 | addr2[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */ | |
568 | for (i = 0; i < 50; i++) | |
569 | udelay (1000); /* wait 1 ms */ | |
570 | } else { | |
571 | addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; | |
572 | addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; | |
573 | addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080; | |
574 | addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; | |
575 | addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; | |
576 | addr2[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */ | |
577 | } | |
578 | l_sect = sect; | |
579 | /* | |
580 | * Wait for each sector to complete, it's more | |
581 | * reliable. According to AMD Spec, you must | |
582 | * issue all erase commands within a specified | |
583 | * timeout. This has been seen to fail, especially | |
584 | * if printf()s are included (for debug)!! | |
585 | */ | |
586 | wait_for_DQ7 (info, sect); | |
46578cc0 SR |
587 | } |
588 | } | |
589 | ||
590 | /* re-enable interrupts if necessary */ | |
591 | if (flag) | |
50015ab3 | 592 | enable_interrupts (); |
46578cc0 SR |
593 | |
594 | /* wait at least 80us - let's wait 1 ms */ | |
595 | udelay (1000); | |
596 | ||
597 | #if 0 | |
598 | /* | |
599 | * We wait for the last triggered sector | |
600 | */ | |
601 | if (l_sect < 0) | |
602 | goto DONE; | |
50015ab3 | 603 | wait_for_DQ7 (info, l_sect); |
46578cc0 | 604 | |
50015ab3 | 605 | DONE: |
46578cc0 SR |
606 | #endif |
607 | /* reset to read mode */ | |
50015ab3 WD |
608 | addr = (FLASH_WORD_SIZE *) info->start[0]; |
609 | addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ | |
46578cc0 SR |
610 | |
611 | printf (" done\n"); | |
612 | return 0; | |
613 | } | |
614 | ||
615 | /*----------------------------------------------------------------------- | |
616 | * Copy memory to flash, returns: | |
617 | * 0 - OK | |
618 | * 1 - write timeout | |
619 | * 2 - Flash not erased | |
620 | */ | |
621 | ||
50015ab3 | 622 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
46578cc0 SR |
623 | { |
624 | ulong cp, wp, data; | |
625 | int i, l, rc; | |
626 | ||
627 | wp = (addr & ~3); /* get lower word aligned address */ | |
628 | ||
629 | /* | |
630 | * handle unaligned start bytes | |
631 | */ | |
632 | if ((l = addr - wp) != 0) { | |
633 | data = 0; | |
50015ab3 WD |
634 | for (i = 0, cp = wp; i < l; ++i, ++cp) { |
635 | data = (data << 8) | (*(uchar *) cp); | |
46578cc0 | 636 | } |
50015ab3 | 637 | for (; i < 4 && cnt > 0; ++i) { |
46578cc0 SR |
638 | data = (data << 8) | *src++; |
639 | --cnt; | |
640 | ++cp; | |
641 | } | |
50015ab3 WD |
642 | for (; cnt == 0 && i < 4; ++i, ++cp) { |
643 | data = (data << 8) | (*(uchar *) cp); | |
46578cc0 SR |
644 | } |
645 | ||
50015ab3 | 646 | if ((rc = write_word (info, wp, data)) != 0) { |
46578cc0 SR |
647 | return (rc); |
648 | } | |
649 | wp += 4; | |
650 | } | |
651 | ||
652 | /* | |
653 | * handle word aligned part | |
654 | */ | |
655 | while (cnt >= 4) { | |
656 | data = 0; | |
50015ab3 | 657 | for (i = 0; i < 4; ++i) { |
46578cc0 SR |
658 | data = (data << 8) | *src++; |
659 | } | |
50015ab3 | 660 | if ((rc = write_word (info, wp, data)) != 0) { |
46578cc0 SR |
661 | return (rc); |
662 | } | |
50015ab3 | 663 | wp += 4; |
46578cc0 SR |
664 | cnt -= 4; |
665 | } | |
666 | ||
667 | if (cnt == 0) { | |
668 | return (0); | |
669 | } | |
670 | ||
671 | /* | |
672 | * handle unaligned tail bytes | |
673 | */ | |
674 | data = 0; | |
50015ab3 | 675 | for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) { |
46578cc0 SR |
676 | data = (data << 8) | *src++; |
677 | --cnt; | |
678 | } | |
50015ab3 WD |
679 | for (; i < 4; ++i, ++cp) { |
680 | data = (data << 8) | (*(uchar *) cp); | |
46578cc0 SR |
681 | } |
682 | ||
50015ab3 | 683 | return (write_word (info, wp, data)); |
46578cc0 SR |
684 | } |
685 | ||
686 | /*----------------------------------------------------------------------- | |
687 | * Write a word to Flash, returns: | |
688 | * 0 - OK | |
689 | * 1 - write timeout | |
690 | * 2 - Flash not erased | |
691 | */ | |
692 | static int write_word (flash_info_t * info, ulong dest, ulong data) | |
693 | { | |
694 | volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) (info->start[0]); | |
695 | volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest; | |
696 | volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data; | |
697 | ulong start; | |
698 | int i; | |
699 | ||
700 | /* Check if Flash is (sufficiently) erased */ | |
701 | if ((*((volatile FLASH_WORD_SIZE *) dest) & | |
50015ab3 | 702 | (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) { |
46578cc0 SR |
703 | return (2); |
704 | } | |
705 | ||
706 | for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) { | |
707 | int flag; | |
708 | ||
709 | /* Disable interrupts which might cause a timeout here */ | |
710 | flag = disable_interrupts (); | |
711 | ||
712 | addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; | |
713 | addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; | |
714 | addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0; | |
715 | ||
716 | dest2[i] = data2[i]; | |
717 | ||
718 | /* re-enable interrupts if necessary */ | |
719 | if (flag) | |
720 | enable_interrupts (); | |
721 | ||
722 | /* data polling for D7 */ | |
723 | start = get_timer (0); | |
724 | while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) != | |
725 | (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) { | |
726 | ||
727 | if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { | |
728 | return (1); | |
729 | } | |
730 | } | |
731 | } | |
732 | ||
733 | return (0); | |
734 | } | |
735 | ||
736 | /*----------------------------------------------------------------------- | |
737 | */ |