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3d3befa7 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net | |
4 | * | |
5 | * (C) Copyright 2001-2004 | |
6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
7 | * | |
8 | * (C) Copyright 2003 | |
9 | * Texas Instruments, <www.ti.com> | |
10 | * Kshitij Gupta <Kshitij@ti.com> | |
11 | * | |
12 | * See file CREDITS for list of people who contributed to this | |
13 | * project. | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License as | |
17 | * published by the Free Software Foundation; either version 2 of | |
18 | * the License, or (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
28 | * MA 02111-1307 USA | |
29 | */ | |
30 | ||
31 | #include <common.h> | |
32 | #include <linux/byteorder/swab.h> | |
33 | ||
34 | #define PHYS_FLASH_SECT_SIZE 0x00020000 /* 256 KB sectors (x2) */ | |
6d0f6bcf | 35 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
3d3befa7 WD |
36 | |
37 | /* Board support for 1 or 2 flash devices */ | |
d407bf52 WD |
38 | #define FLASH_PORT_WIDTH32 |
39 | #undef FLASH_PORT_WIDTH16 | |
3d3befa7 WD |
40 | |
41 | #ifdef FLASH_PORT_WIDTH16 | |
42 | #define FLASH_PORT_WIDTH ushort | |
43 | #define FLASH_PORT_WIDTHV vu_short | |
44 | #define SWAP(x) __swab16(x) | |
45 | #else | |
46 | #define FLASH_PORT_WIDTH ulong | |
47 | #define FLASH_PORT_WIDTHV vu_long | |
48 | #define SWAP(x) __swab32(x) | |
49 | #endif | |
50 | ||
51 | #define FPW FLASH_PORT_WIDTH | |
52 | #define FPWV FLASH_PORT_WIDTHV | |
53 | ||
54 | #define mb() __asm__ __volatile__ ("" : : : "memory") | |
55 | ||
56 | ||
57 | /* Flash Organization Structure */ | |
58 | typedef struct OrgDef { | |
59 | unsigned int sector_number; | |
60 | unsigned int sector_size; | |
61 | } OrgDef; | |
62 | ||
63 | ||
64 | /* Flash Organizations */ | |
d407bf52 WD |
65 | OrgDef OrgIntel_28F256K3[] = { |
66 | {256, 128 * 1024}, /* 256 * 128kBytes sectors */ | |
3d3befa7 WD |
67 | }; |
68 | ||
69 | ||
70 | /*----------------------------------------------------------------------- | |
71 | * Functions | |
72 | */ | |
73 | unsigned long flash_init (void); | |
74 | static ulong flash_get_size (FPW * addr, flash_info_t * info); | |
75 | static int write_data (flash_info_t * info, ulong dest, FPW data); | |
76 | static void flash_get_offsets (ulong base, flash_info_t * info); | |
77 | void inline spin_wheel (void); | |
78 | void flash_print_info (flash_info_t * info); | |
79 | void flash_unprotect_sectors (FPWV * addr); | |
80 | int flash_erase (flash_info_t * info, int s_first, int s_last); | |
81 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt); | |
82 | ||
83 | /*----------------------------------------------------------------------- | |
84 | */ | |
85 | ||
d407bf52 WD |
86 | static void flash_vpp(int on) |
87 | { | |
88 | unsigned int tmp; | |
89 | ||
90 | tmp = *(unsigned int *)(VERSATILE_FLASHCTRL); | |
91 | ||
92 | if (on) | |
93 | tmp |= VERSATILE_FLASHPROG_FLVPPEN; | |
94 | else | |
53677ef1 | 95 | tmp &= ~VERSATILE_FLASHPROG_FLVPPEN; |
d407bf52 WD |
96 | |
97 | *(unsigned int *)(VERSATILE_FLASHCTRL) = tmp; | |
98 | } | |
99 | ||
3d3befa7 WD |
100 | unsigned long flash_init (void) |
101 | { | |
102 | int i; | |
103 | ulong size = 0; | |
6d0f6bcf | 104 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { |
3d3befa7 WD |
105 | switch (i) { |
106 | case 0: | |
d407bf52 | 107 | flash_vpp(1); |
3d3befa7 WD |
108 | flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]); |
109 | flash_get_offsets (PHYS_FLASH_1, &flash_info[i]); | |
d407bf52 | 110 | flash_vpp(0); |
3d3befa7 WD |
111 | break; |
112 | default: | |
113 | panic ("configured too many flash banks!\n"); | |
114 | break; | |
115 | } | |
116 | size += flash_info[i].size; | |
117 | } | |
118 | ||
119 | /* Protect monitor and environment sectors | |
120 | */ | |
121 | flash_protect (FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
122 | CONFIG_SYS_FLASH_BASE, |
123 | CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]); | |
3d3befa7 WD |
124 | |
125 | return size; | |
126 | } | |
127 | ||
128 | /*----------------------------------------------------------------------- | |
129 | */ | |
130 | static void flash_get_offsets (ulong base, flash_info_t * info) | |
131 | { | |
132 | int i; | |
133 | OrgDef *pOrgDef; | |
134 | ||
d407bf52 | 135 | pOrgDef = OrgIntel_28F256K3; |
3d3befa7 WD |
136 | if (info->flash_id == FLASH_UNKNOWN) { |
137 | return; | |
138 | } | |
139 | ||
140 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { | |
141 | for (i = 0; i < info->sector_count; i++) { | |
142 | if (i > 255) { | |
143 | info->start[i] = base + (i * 0x8000); | |
144 | info->protect[i] = 0; | |
145 | } else { | |
146 | info->start[i] = base + | |
147 | (i * PHYS_FLASH_SECT_SIZE); | |
148 | info->protect[i] = 0; | |
149 | } | |
150 | } | |
151 | } | |
152 | } | |
153 | ||
154 | /*----------------------------------------------------------------------- | |
155 | */ | |
156 | void flash_print_info (flash_info_t * info) | |
157 | { | |
158 | int i; | |
159 | ||
160 | if (info->flash_id == FLASH_UNKNOWN) { | |
161 | printf ("missing or unknown FLASH type\n"); | |
162 | return; | |
163 | } | |
164 | ||
165 | switch (info->flash_id & FLASH_VENDMASK) { | |
166 | case FLASH_MAN_INTEL: | |
167 | printf ("INTEL "); | |
168 | break; | |
169 | default: | |
170 | printf ("Unknown Vendor "); | |
171 | break; | |
172 | } | |
173 | ||
174 | switch (info->flash_id & FLASH_TYPEMASK) { | |
175 | case FLASH_28F256L18T: | |
176 | printf ("FLASH 28F256L18T\n"); | |
177 | break; | |
d407bf52 WD |
178 | case FLASH_28F256K3: |
179 | printf ("FLASH 28F256K3\n"); | |
180 | break; | |
3d3befa7 WD |
181 | default: |
182 | printf ("Unknown Chip Type\n"); | |
183 | break; | |
184 | } | |
185 | ||
186 | printf (" Size: %ld MB in %d Sectors\n", | |
187 | info->size >> 20, info->sector_count); | |
188 | ||
189 | printf (" Sector Start Addresses:"); | |
190 | for (i = 0; i < info->sector_count; ++i) { | |
191 | if ((i % 5) == 0) | |
192 | printf ("\n "); | |
193 | printf (" %08lX%s", | |
194 | info->start[i], info->protect[i] ? " (RO)" : " "); | |
195 | } | |
196 | printf ("\n"); | |
197 | return; | |
198 | } | |
199 | ||
200 | /* | |
201 | * The following code cannot be run from FLASH! | |
202 | */ | |
203 | static ulong flash_get_size (FPW * addr, flash_info_t * info) | |
204 | { | |
205 | volatile FPW value; | |
206 | ||
207 | /* Write auto select command: read Manufacturer ID */ | |
208 | addr[0x5555] = (FPW) 0x00AA00AA; | |
209 | addr[0x2AAA] = (FPW) 0x00550055; | |
210 | addr[0x5555] = (FPW) 0x00900090; | |
211 | ||
212 | mb (); | |
213 | value = addr[0]; | |
3d3befa7 WD |
214 | switch (value) { |
215 | ||
216 | case (FPW) INTEL_MANUFACT: | |
217 | info->flash_id = FLASH_MAN_INTEL; | |
218 | break; | |
219 | ||
220 | default: | |
221 | info->flash_id = FLASH_UNKNOWN; | |
222 | info->sector_count = 0; | |
223 | info->size = 0; | |
224 | addr[0] = (FPW) 0x00FF00FF; /* restore read mode */ | |
225 | return (0); /* no or unknown flash */ | |
226 | } | |
227 | ||
228 | mb (); | |
229 | value = addr[1]; /* device ID */ | |
230 | switch (value) { | |
231 | ||
232 | case (FPW) (INTEL_ID_28F256L18T): | |
233 | info->flash_id += FLASH_28F256L18T; | |
234 | info->sector_count = 259; | |
235 | info->size = 0x02000000; | |
236 | break; /* => 32 MB */ | |
237 | ||
d407bf52 WD |
238 | case (FPW)(INTEL_ID_28F256K3): |
239 | info->flash_id += FLASH_28F256K3; | |
240 | info->sector_count = 256; | |
241 | info->size = 0x02000000; | |
d407bf52 WD |
242 | break; |
243 | ||
3d3befa7 WD |
244 | default: |
245 | info->flash_id = FLASH_UNKNOWN; | |
246 | break; | |
247 | } | |
248 | ||
6d0f6bcf | 249 | if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { |
3d3befa7 | 250 | printf ("** ERROR: sector count %d > max (%d) **\n", |
6d0f6bcf JCPV |
251 | info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); |
252 | info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; | |
3d3befa7 WD |
253 | } |
254 | ||
255 | addr[0] = (FPW) 0x00FF00FF; /* restore read mode */ | |
256 | ||
257 | return (info->size); | |
258 | } | |
259 | ||
260 | ||
261 | /* unprotects a sector for write and erase | |
262 | * on some intel parts, this unprotects the entire chip, but it | |
263 | * wont hurt to call this additional times per sector... | |
264 | */ | |
265 | void flash_unprotect_sectors (FPWV * addr) | |
266 | { | |
267 | #define PD_FINTEL_WSMS_READY_MASK 0x0080 | |
268 | ||
269 | *addr = (FPW) 0x00500050; /* clear status register */ | |
270 | ||
271 | /* this sends the clear lock bit command */ | |
272 | *addr = (FPW) 0x00600060; | |
273 | *addr = (FPW) 0x00D000D0; | |
274 | } | |
275 | ||
276 | ||
277 | /*----------------------------------------------------------------------- | |
278 | */ | |
279 | ||
280 | int flash_erase (flash_info_t * info, int s_first, int s_last) | |
281 | { | |
282 | int flag, prot, sect; | |
283 | ulong type, start, last; | |
284 | int rcode = 0; | |
285 | ||
286 | if ((s_first < 0) || (s_first > s_last)) { | |
287 | if (info->flash_id == FLASH_UNKNOWN) { | |
288 | printf ("- missing\n"); | |
289 | } else { | |
290 | printf ("- no sectors to erase\n"); | |
291 | } | |
292 | return 1; | |
293 | } | |
294 | ||
295 | type = (info->flash_id & FLASH_VENDMASK); | |
296 | if ((type != FLASH_MAN_INTEL)) { | |
297 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
298 | info->flash_id); | |
299 | return 1; | |
300 | } | |
301 | ||
302 | prot = 0; | |
303 | for (sect = s_first; sect <= s_last; ++sect) { | |
304 | if (info->protect[sect]) { | |
305 | prot++; | |
306 | } | |
307 | } | |
308 | ||
309 | if (prot) { | |
310 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
311 | prot); | |
312 | } else { | |
313 | printf ("\n"); | |
314 | } | |
315 | ||
d407bf52 | 316 | flash_vpp(1); |
3d3befa7 WD |
317 | |
318 | start = get_timer (0); | |
319 | last = start; | |
320 | ||
321 | /* Disable interrupts which might cause a timeout here */ | |
322 | flag = disable_interrupts (); | |
323 | ||
324 | /* Start erase on unprotected sectors */ | |
325 | for (sect = s_first; sect <= s_last; sect++) { | |
326 | if (info->protect[sect] == 0) { /* not protected */ | |
327 | FPWV *addr = (FPWV *) (info->start[sect]); | |
328 | FPW status; | |
329 | ||
330 | printf ("Erasing sector %2d ... ", sect); | |
331 | ||
332 | flash_unprotect_sectors (addr); | |
333 | ||
334 | /* arm simple, non interrupt dependent timer */ | |
335 | reset_timer_masked (); | |
336 | ||
337 | *addr = (FPW) 0x00500050;/* clear status register */ | |
338 | *addr = (FPW) 0x00200020;/* erase setup */ | |
339 | *addr = (FPW) 0x00D000D0;/* erase confirm */ | |
340 | ||
341 | while (((status = | |
342 | *addr) & (FPW) 0x00800080) != | |
343 | (FPW) 0x00800080) { | |
344 | if (get_timer_masked () > | |
6d0f6bcf | 345 | CONFIG_SYS_FLASH_ERASE_TOUT) { |
3d3befa7 WD |
346 | printf ("Timeout\n"); |
347 | /* suspend erase */ | |
348 | *addr = (FPW) 0x00B000B0; | |
349 | /* reset to read mode */ | |
350 | *addr = (FPW) 0x00FF00FF; | |
351 | rcode = 1; | |
352 | break; | |
353 | } | |
354 | } | |
355 | ||
356 | /* clear status register cmd. */ | |
357 | *addr = (FPW) 0x00500050; | |
358 | *addr = (FPW) 0x00FF00FF;/* resest to read mode */ | |
359 | printf (" done\n"); | |
360 | } | |
361 | } | |
d407bf52 WD |
362 | |
363 | flash_vpp(0); | |
364 | ||
3d3befa7 WD |
365 | return rcode; |
366 | } | |
367 | ||
368 | /*----------------------------------------------------------------------- | |
369 | * Copy memory to flash, returns: | |
370 | * 0 - OK | |
371 | * 1 - write timeout | |
372 | * 2 - Flash not erased | |
373 | * 4 - Flash not identified | |
374 | */ | |
375 | ||
376 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) | |
377 | { | |
378 | ulong cp, wp; | |
379 | FPW data; | |
380 | int count, i, l, rc, port_width; | |
381 | ||
382 | if (info->flash_id == FLASH_UNKNOWN) { | |
383 | return 4; | |
384 | } | |
385 | /* get lower word aligned address */ | |
386 | #ifdef FLASH_PORT_WIDTH16 | |
387 | wp = (addr & ~1); | |
388 | port_width = 2; | |
389 | #else | |
390 | wp = (addr & ~3); | |
391 | port_width = 4; | |
392 | #endif | |
393 | ||
d407bf52 WD |
394 | flash_vpp(1); |
395 | ||
3d3befa7 WD |
396 | /* |
397 | * handle unaligned start bytes | |
398 | */ | |
399 | if ((l = addr - wp) != 0) { | |
400 | data = 0; | |
401 | for (i = 0, cp = wp; i < l; ++i, ++cp) { | |
402 | data = (data << 8) | (*(uchar *) cp); | |
403 | } | |
404 | for (; i < port_width && cnt > 0; ++i) { | |
405 | data = (data << 8) | *src++; | |
406 | --cnt; | |
407 | ++cp; | |
408 | } | |
409 | for (; cnt == 0 && i < port_width; ++i, ++cp) { | |
410 | data = (data << 8) | (*(uchar *) cp); | |
411 | } | |
412 | ||
413 | if ((rc = write_data (info, wp, SWAP (data))) != 0) { | |
d407bf52 | 414 | flash_vpp(0); |
3d3befa7 WD |
415 | return (rc); |
416 | } | |
417 | wp += port_width; | |
418 | } | |
419 | ||
420 | /* | |
421 | * handle word aligned part | |
422 | */ | |
423 | count = 0; | |
424 | while (cnt >= port_width) { | |
425 | data = 0; | |
426 | for (i = 0; i < port_width; ++i) { | |
427 | data = (data << 8) | *src++; | |
428 | } | |
429 | if ((rc = write_data (info, wp, SWAP (data))) != 0) { | |
d407bf52 | 430 | flash_vpp(0); |
3d3befa7 WD |
431 | return (rc); |
432 | } | |
433 | wp += port_width; | |
434 | cnt -= port_width; | |
435 | if (count++ > 0x800) { | |
436 | spin_wheel (); | |
437 | count = 0; | |
438 | } | |
439 | } | |
440 | ||
441 | if (cnt == 0) { | |
d407bf52 | 442 | flash_vpp(0); |
3d3befa7 WD |
443 | return (0); |
444 | } | |
445 | ||
446 | /* | |
447 | * handle unaligned tail bytes | |
448 | */ | |
449 | data = 0; | |
450 | for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) { | |
451 | data = (data << 8) | *src++; | |
452 | --cnt; | |
453 | } | |
454 | for (; i < port_width; ++i, ++cp) { | |
455 | data = (data << 8) | (*(uchar *) cp); | |
456 | } | |
457 | ||
d407bf52 WD |
458 | rc = write_data (info, wp, SWAP (data)); |
459 | ||
460 | flash_vpp(0); | |
461 | ||
462 | return rc; | |
3d3befa7 WD |
463 | } |
464 | ||
465 | /*----------------------------------------------------------------------- | |
466 | * Write a word or halfword to Flash, returns: | |
467 | * 0 - OK | |
468 | * 1 - write timeout | |
469 | * 2 - Flash not erased | |
470 | */ | |
471 | static int write_data (flash_info_t * info, ulong dest, FPW data) | |
472 | { | |
473 | FPWV *addr = (FPWV *) dest; | |
474 | ulong status; | |
475 | int flag; | |
476 | ||
477 | /* Check if Flash is (sufficiently) erased */ | |
478 | if ((*addr & data) != data) { | |
0a5676be | 479 | printf ("not erased at %08lx (%lx)\n", (ulong) addr, (ulong) *addr); |
3d3befa7 WD |
480 | return (2); |
481 | } | |
d407bf52 WD |
482 | |
483 | flash_vpp(1); | |
484 | ||
3d3befa7 WD |
485 | flash_unprotect_sectors (addr); |
486 | /* Disable interrupts which might cause a timeout here */ | |
487 | flag = disable_interrupts (); | |
488 | *addr = (FPW) 0x00400040; /* write setup */ | |
489 | *addr = data; | |
490 | ||
491 | /* arm simple, non interrupt dependent timer */ | |
492 | reset_timer_masked (); | |
493 | ||
494 | /* wait while polling the status register */ | |
495 | while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) { | |
6d0f6bcf | 496 | if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) { |
3d3befa7 | 497 | *addr = (FPW) 0x00FF00FF; /* restore read mode */ |
d407bf52 | 498 | flash_vpp(0); |
3d3befa7 WD |
499 | return (1); |
500 | } | |
501 | } | |
502 | *addr = (FPW) 0x00FF00FF; /* restore read mode */ | |
d407bf52 | 503 | flash_vpp(0); |
3d3befa7 WD |
504 | return (0); |
505 | } | |
506 | ||
507 | void inline spin_wheel (void) | |
508 | { | |
509 | static int p = 0; | |
510 | static char w[] = "\\/-"; | |
511 | ||
512 | printf ("\010%c", w[p]); | |
513 | (++p == 3) ? (p = 0) : 0; | |
514 | } |