Revision | b9c1f4bf8e11d3701902dcd22a2fa18de8e1250f (tree) |
---|---|
Time | 2014-04-18 06:44:34 |
Author | Masahiro Yamada <yamada.m@jp.p...> |
Commiter | Tom Rini |
board: ppmc8260: delete an unused source file
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Brad Kemp <Brad.Kemp@seranoa.com>
@@ -1,736 +0,0 @@ | ||
1 | -/* | |
2 | - * (C) Copyright 2002 | |
3 | - * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com | |
4 | - * | |
5 | - * SPDX-License-Identifier: GPL-2.0+ | |
6 | - */ | |
7 | - | |
8 | -#include <common.h> | |
9 | -#include <mpc8260.h> | |
10 | -#include <asm/processor.h> | |
11 | - | |
12 | -#undef DEBUG_FLASH | |
13 | -/* | |
14 | - * This file implements a Common Flash Interface (CFI) driver for U-Boot. | |
15 | - * The width of the port and the width of the chips are determined at initialization. | |
16 | - * These widths are used to calculate the address for access CFI data structures. | |
17 | - * It has been tested on an Intel Strataflash implementation. | |
18 | - * | |
19 | - * References | |
20 | - * JEDEC Standard JESD68 - Common Flash Interface (CFI) | |
21 | - * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes | |
22 | - * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets | |
23 | - * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet | |
24 | - * | |
25 | - * TODO | |
26 | - * Use Primary Extended Query table (PRI) and Alternate Algorithm Query Table (ALT) to determine if protection is available | |
27 | - * Add support for other command sets Use the PRI and ALT to determine command set | |
28 | - * Verify erase and program timeouts. | |
29 | - */ | |
30 | - | |
31 | -#define FLASH_CMD_CFI 0x98 | |
32 | -#define FLASH_CMD_READ_ID 0x90 | |
33 | -#define FLASH_CMD_RESET 0xff | |
34 | -#define FLASH_CMD_BLOCK_ERASE 0x20 | |
35 | -#define FLASH_CMD_ERASE_CONFIRM 0xD0 | |
36 | -#define FLASH_CMD_WRITE 0x40 | |
37 | -#define FLASH_CMD_PROTECT 0x60 | |
38 | -#define FLASH_CMD_PROTECT_SET 0x01 | |
39 | -#define FLASH_CMD_PROTECT_CLEAR 0xD0 | |
40 | -#define FLASH_CMD_CLEAR_STATUS 0x50 | |
41 | -#define FLASH_CMD_WRITE_TO_BUFFER 0xE8 | |
42 | -#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0 | |
43 | - | |
44 | -#define FLASH_STATUS_DONE 0x80 | |
45 | -#define FLASH_STATUS_ESS 0x40 | |
46 | -#define FLASH_STATUS_ECLBS 0x20 | |
47 | -#define FLASH_STATUS_PSLBS 0x10 | |
48 | -#define FLASH_STATUS_VPENS 0x08 | |
49 | -#define FLASH_STATUS_PSS 0x04 | |
50 | -#define FLASH_STATUS_DPS 0x02 | |
51 | -#define FLASH_STATUS_R 0x01 | |
52 | -#define FLASH_STATUS_PROTECT 0x01 | |
53 | - | |
54 | -#define FLASH_OFFSET_CFI 0x55 | |
55 | -#define FLASH_OFFSET_CFI_RESP 0x10 | |
56 | -#define FLASH_OFFSET_WTOUT 0x1F | |
57 | -#define FLASH_OFFSET_WBTOUT 0x20 | |
58 | -#define FLASH_OFFSET_ETOUT 0x21 | |
59 | -#define FLASH_OFFSET_CETOUT 0x22 | |
60 | -#define FLASH_OFFSET_WMAX_TOUT 0x23 | |
61 | -#define FLASH_OFFSET_WBMAX_TOUT 0x24 | |
62 | -#define FLASH_OFFSET_EMAX_TOUT 0x25 | |
63 | -#define FLASH_OFFSET_CEMAX_TOUT 0x26 | |
64 | -#define FLASH_OFFSET_SIZE 0x27 | |
65 | -#define FLASH_OFFSET_INTERFACE 0x28 | |
66 | -#define FLASH_OFFSET_BUFFER_SIZE 0x2A | |
67 | -#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C | |
68 | -#define FLASH_OFFSET_ERASE_REGIONS 0x2D | |
69 | -#define FLASH_OFFSET_PROTECT 0x02 | |
70 | -#define FLASH_OFFSET_USER_PROTECTION 0x85 | |
71 | -#define FLASH_OFFSET_INTEL_PROTECTION 0x81 | |
72 | - | |
73 | - | |
74 | -#define FLASH_MAN_CFI 0x01000000 | |
75 | - | |
76 | - | |
77 | -typedef union { | |
78 | - unsigned char c; | |
79 | - unsigned short w; | |
80 | - unsigned long l; | |
81 | -} cfiword_t; | |
82 | - | |
83 | -typedef union { | |
84 | - unsigned char * cp; | |
85 | - unsigned short *wp; | |
86 | - unsigned long *lp; | |
87 | -} cfiptr_t; | |
88 | - | |
89 | -#define NUM_ERASE_REGIONS 4 | |
90 | - | |
91 | -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ | |
92 | - | |
93 | - | |
94 | -/*----------------------------------------------------------------------- | |
95 | - * Functions | |
96 | - */ | |
97 | - | |
98 | - | |
99 | -static void flash_add_byte(flash_info_t *info, cfiword_t * cword, uchar c); | |
100 | -static void flash_make_cmd(flash_info_t * info, uchar cmd, void * cmdbuf); | |
101 | -static void flash_write_cmd(flash_info_t * info, int sect, uchar offset, uchar cmd); | |
102 | -static int flash_isequal(flash_info_t * info, int sect, uchar offset, uchar cmd); | |
103 | -static int flash_isset(flash_info_t * info, int sect, uchar offset, uchar cmd); | |
104 | -static int flash_detect_cfi(flash_info_t * info); | |
105 | -static ulong flash_get_size (ulong base, int banknum); | |
106 | -static int flash_write_cfiword (flash_info_t *info, ulong dest, cfiword_t cword); | |
107 | -static int flash_full_status_check(flash_info_t * info, ulong sector, ulong tout, char * prompt); | |
108 | -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE | |
109 | -static int flash_write_cfibuffer(flash_info_t * info, ulong dest, uchar * cp, int len); | |
110 | -#endif | |
111 | -/*----------------------------------------------------------------------- | |
112 | - * create an address based on the offset and the port width | |
113 | - */ | |
114 | -inline uchar * flash_make_addr(flash_info_t * info, int sect, int offset) | |
115 | -{ | |
116 | - return ((uchar *)(info->start[sect] + (offset * info->portwidth))); | |
117 | -} | |
118 | -/*----------------------------------------------------------------------- | |
119 | - * read a character at a port width address | |
120 | - */ | |
121 | -inline uchar flash_read_uchar(flash_info_t * info, uchar offset) | |
122 | -{ | |
123 | - uchar *cp; | |
124 | - cp = flash_make_addr(info, 0, offset); | |
125 | - return (cp[info->portwidth - 1]); | |
126 | -} | |
127 | - | |
128 | -/*----------------------------------------------------------------------- | |
129 | - * read a short word by swapping for ppc format. | |
130 | - */ | |
131 | -ushort flash_read_ushort(flash_info_t * info, int sect, uchar offset) | |
132 | -{ | |
133 | - uchar * addr; | |
134 | - | |
135 | - addr = flash_make_addr(info, sect, offset); | |
136 | - return ((addr[(2*info->portwidth) - 1] << 8) | addr[info->portwidth - 1]); | |
137 | - | |
138 | -} | |
139 | - | |
140 | -/*----------------------------------------------------------------------- | |
141 | - * read a long word by picking the least significant byte of each maiximum | |
142 | - * port size word. Swap for ppc format. | |
143 | - */ | |
144 | -ulong flash_read_long(flash_info_t * info, int sect, uchar offset) | |
145 | -{ | |
146 | - uchar * addr; | |
147 | - | |
148 | - addr = flash_make_addr(info, sect, offset); | |
149 | - return ( (addr[(2*info->portwidth) - 1] << 24 ) | (addr[(info->portwidth) -1] << 16) | | |
150 | - (addr[(4*info->portwidth) - 1] << 8) | addr[(3*info->portwidth) - 1]); | |
151 | - | |
152 | -} | |
153 | - | |
154 | -/*----------------------------------------------------------------------- | |
155 | - */ | |
156 | -unsigned long flash_init (void) | |
157 | -{ | |
158 | - unsigned long size; | |
159 | - int i; | |
160 | - unsigned long address; | |
161 | - | |
162 | - | |
163 | - /* The flash is positioned back to back, with the demultiplexing of the chip | |
164 | - * based on the A24 address line. | |
165 | - * | |
166 | - */ | |
167 | - | |
168 | - address = CONFIG_SYS_FLASH_BASE; | |
169 | - size = 0; | |
170 | - | |
171 | - | |
172 | - /* Init: no FLASHes known */ | |
173 | - for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { | |
174 | - flash_info[i].flash_id = FLASH_UNKNOWN; | |
175 | - size += flash_info[i].size = flash_get_size(address, i); | |
176 | - address += CONFIG_SYS_FLASH_INCREMENT; | |
177 | - if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
178 | - printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",i, | |
179 | - flash_info[0].size, flash_info[i].size<<20); | |
180 | - } | |
181 | - } | |
182 | - | |
183 | - /* Monitor protection ON by default */ | |
184 | -#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) | |
185 | - for(i=0; flash_info[0].start[i] < CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1; i++) | |
186 | - (void)flash_real_protect(&flash_info[0], i, 1); | |
187 | -#endif | |
188 | - | |
189 | - return (size); | |
190 | -} | |
191 | - | |
192 | -/*----------------------------------------------------------------------- | |
193 | - */ | |
194 | -int flash_erase (flash_info_t *info, int s_first, int s_last) | |
195 | -{ | |
196 | - int rcode = 0; | |
197 | - int prot; | |
198 | - int sect; | |
199 | - | |
200 | - if( info->flash_id != FLASH_MAN_CFI) { | |
201 | - printf ("Can't erase unknown flash type - aborted\n"); | |
202 | - return 1; | |
203 | - } | |
204 | - if ((s_first < 0) || (s_first > s_last)) { | |
205 | - printf ("- no sectors to erase\n"); | |
206 | - return 1; | |
207 | - } | |
208 | - | |
209 | - prot = 0; | |
210 | - for (sect=s_first; sect<=s_last; ++sect) { | |
211 | - if (info->protect[sect]) { | |
212 | - prot++; | |
213 | - } | |
214 | - } | |
215 | - if (prot) { | |
216 | - printf ("- Warning: %d protected sectors will not be erased!\n", | |
217 | - prot); | |
218 | - } else { | |
219 | - printf ("\n"); | |
220 | - } | |
221 | - | |
222 | - | |
223 | - for (sect = s_first; sect<=s_last; sect++) { | |
224 | - if (info->protect[sect] == 0) { /* not protected */ | |
225 | - flash_write_cmd(info, sect, 0, FLASH_CMD_CLEAR_STATUS); | |
226 | - flash_write_cmd(info, sect, 0, FLASH_CMD_BLOCK_ERASE); | |
227 | - flash_write_cmd(info, sect, 0, FLASH_CMD_ERASE_CONFIRM); | |
228 | - | |
229 | - if(flash_full_status_check(info, sect, info->erase_blk_tout, "erase")) { | |
230 | - rcode = 1; | |
231 | - } else | |
232 | - printf("."); | |
233 | - } | |
234 | - } | |
235 | - printf (" done\n"); | |
236 | - return rcode; | |
237 | -} | |
238 | - | |
239 | -/*----------------------------------------------------------------------- | |
240 | - */ | |
241 | -void flash_print_info (flash_info_t *info) | |
242 | -{ | |
243 | - int i; | |
244 | - | |
245 | - if (info->flash_id != FLASH_MAN_CFI) { | |
246 | - printf ("missing or unknown FLASH type\n"); | |
247 | - return; | |
248 | - } | |
249 | - | |
250 | - printf("CFI conformant FLASH (%d x %d)", | |
251 | - (info->portwidth << 3 ), (info->chipwidth << 3 )); | |
252 | - printf (" Size: %ld MB in %d Sectors\n", | |
253 | - info->size >> 20, info->sector_count); | |
254 | - printf(" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n", | |
255 | - info->erase_blk_tout, info->write_tout, info->buffer_write_tout, info->buffer_size); | |
256 | - | |
257 | - printf (" Sector Start Addresses:"); | |
258 | - for (i=0; i<info->sector_count; ++i) { | |
259 | - if ((i % 5) == 0) | |
260 | - printf ("\n"); | |
261 | - printf (" %08lX%5s", | |
262 | - info->start[i], | |
263 | - info->protect[i] ? " (RO)" : " " | |
264 | - ); | |
265 | - } | |
266 | - printf ("\n"); | |
267 | - return; | |
268 | -} | |
269 | - | |
270 | -/*----------------------------------------------------------------------- | |
271 | - * Copy memory to flash, returns: | |
272 | - * 0 - OK | |
273 | - * 1 - write timeout | |
274 | - * 2 - Flash not erased | |
275 | - */ | |
276 | -int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
277 | -{ | |
278 | - ulong wp; | |
279 | - ulong cp; | |
280 | - int aln; | |
281 | - cfiword_t cword; | |
282 | - int i, rc; | |
283 | - | |
284 | - /* get lower aligned address */ | |
285 | - wp = (addr & ~(info->portwidth - 1)); | |
286 | - | |
287 | - /* handle unaligned start */ | |
288 | - if((aln = addr - wp) != 0) { | |
289 | - cword.l = 0; | |
290 | - cp = wp; | |
291 | - for(i=0;i<aln; ++i, ++cp) | |
292 | - flash_add_byte(info, &cword, (*(uchar *)cp)); | |
293 | - | |
294 | - for(; (i< info->portwidth) && (cnt > 0) ; i++) { | |
295 | - flash_add_byte(info, &cword, *src++); | |
296 | - cnt--; | |
297 | - cp++; | |
298 | - } | |
299 | - for(; (cnt == 0) && (i < info->portwidth); ++i, ++cp) | |
300 | - flash_add_byte(info, &cword, (*(uchar *)cp)); | |
301 | - if((rc = flash_write_cfiword(info, wp, cword)) != 0) | |
302 | - return rc; | |
303 | - wp = cp; | |
304 | - } | |
305 | - | |
306 | -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE | |
307 | - while(cnt >= info->portwidth) { | |
308 | - i = info->buffer_size > cnt? cnt: info->buffer_size; | |
309 | - if((rc = flash_write_cfibuffer(info, wp, src,i)) != ERR_OK) | |
310 | - return rc; | |
311 | - wp += i; | |
312 | - src += i; | |
313 | - cnt -=i; | |
314 | - } | |
315 | -#else | |
316 | - /* handle the aligned part */ | |
317 | - while(cnt >= info->portwidth) { | |
318 | - cword.l = 0; | |
319 | - for(i = 0; i < info->portwidth; i++) { | |
320 | - flash_add_byte(info, &cword, *src++); | |
321 | - } | |
322 | - if((rc = flash_write_cfiword(info, wp, cword)) != 0) | |
323 | - return rc; | |
324 | - wp += info->portwidth; | |
325 | - cnt -= info->portwidth; | |
326 | - } | |
327 | -#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ | |
328 | - if (cnt == 0) { | |
329 | - return (0); | |
330 | - } | |
331 | - | |
332 | - /* | |
333 | - * handle unaligned tail bytes | |
334 | - */ | |
335 | - cword.l = 0; | |
336 | - for (i=0, cp=wp; (i<info->portwidth) && (cnt>0); ++i, ++cp) { | |
337 | - flash_add_byte(info, &cword, *src++); | |
338 | - --cnt; | |
339 | - } | |
340 | - for (; i<info->portwidth; ++i, ++cp) { | |
341 | - flash_add_byte(info, & cword, (*(uchar *)cp)); | |
342 | - } | |
343 | - | |
344 | - return flash_write_cfiword(info, wp, cword); | |
345 | -} | |
346 | - | |
347 | -/*----------------------------------------------------------------------- | |
348 | - */ | |
349 | -int flash_real_protect(flash_info_t *info, long sector, int prot) | |
350 | -{ | |
351 | - int retcode = 0; | |
352 | - | |
353 | - flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); | |
354 | - flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT); | |
355 | - if(prot) | |
356 | - flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET); | |
357 | - else | |
358 | - flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR); | |
359 | - | |
360 | - if((retcode = flash_full_status_check(info, sector, info->erase_blk_tout, | |
361 | - prot?"protect":"unprotect")) == 0) { | |
362 | - | |
363 | - info->protect[sector] = prot; | |
364 | - /* Intel's unprotect unprotects all locking */ | |
365 | - if(prot == 0) { | |
366 | - int i; | |
367 | - for(i = 0 ; i<info->sector_count; i++) { | |
368 | - if(info->protect[i]) | |
369 | - flash_real_protect(info, i, 1); | |
370 | - } | |
371 | - } | |
372 | - } | |
373 | - | |
374 | - return retcode; | |
375 | -} | |
376 | -/*----------------------------------------------------------------------- | |
377 | - * wait for XSR.7 to be set. Time out with an error if it does not. | |
378 | - * This routine does not set the flash to read-array mode. | |
379 | - */ | |
380 | -static int flash_status_check(flash_info_t * info, ulong sector, ulong tout, char * prompt) | |
381 | -{ | |
382 | - ulong start; | |
383 | - | |
384 | - /* Wait for command completion */ | |
385 | - start = get_timer (0); | |
386 | - while(!flash_isset(info, sector, 0, FLASH_STATUS_DONE)) { | |
387 | - if (get_timer(start) > info->erase_blk_tout) { | |
388 | - printf("Flash %s timeout at address %lx\n", prompt, info->start[sector]); | |
389 | - flash_write_cmd(info, sector, 0, FLASH_CMD_RESET); | |
390 | - return ERR_TIMOUT; | |
391 | - } | |
392 | - } | |
393 | - return ERR_OK; | |
394 | -} | |
395 | -/*----------------------------------------------------------------------- | |
396 | - * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check. | |
397 | - * This routine sets the flash to read-array mode. | |
398 | - */ | |
399 | -static int flash_full_status_check(flash_info_t * info, ulong sector, ulong tout, char * prompt) | |
400 | -{ | |
401 | - int retcode; | |
402 | - retcode = flash_status_check(info, sector, tout, prompt); | |
403 | - if((retcode == ERR_OK) && !flash_isequal(info,sector, 0, FLASH_STATUS_DONE)) { | |
404 | - retcode = ERR_INVAL; | |
405 | - printf("Flash %s error at address %lx\n", prompt,info->start[sector]); | |
406 | - if(flash_isset(info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)){ | |
407 | - printf("Command Sequence Error.\n"); | |
408 | - } else if(flash_isset(info, sector, 0, FLASH_STATUS_ECLBS)){ | |
409 | - printf("Block Erase Error.\n"); | |
410 | - retcode = ERR_NOT_ERASED; | |
411 | - } else if (flash_isset(info, sector, 0, FLASH_STATUS_PSLBS)) { | |
412 | - printf("Locking Error\n"); | |
413 | - } | |
414 | - if(flash_isset(info, sector, 0, FLASH_STATUS_DPS)){ | |
415 | - printf("Block locked.\n"); | |
416 | - retcode = ERR_PROTECTED; | |
417 | - } | |
418 | - if(flash_isset(info, sector, 0, FLASH_STATUS_VPENS)) | |
419 | - printf("Vpp Low Error.\n"); | |
420 | - } | |
421 | - flash_write_cmd(info, sector, 0, FLASH_CMD_RESET); | |
422 | - return retcode; | |
423 | -} | |
424 | -/*----------------------------------------------------------------------- | |
425 | - */ | |
426 | -static void flash_add_byte(flash_info_t *info, cfiword_t * cword, uchar c) | |
427 | -{ | |
428 | - switch(info->portwidth) { | |
429 | - case FLASH_CFI_8BIT: | |
430 | - cword->c = c; | |
431 | - break; | |
432 | - case FLASH_CFI_16BIT: | |
433 | - cword->w = (cword->w << 8) | c; | |
434 | - break; | |
435 | - case FLASH_CFI_32BIT: | |
436 | - cword->l = (cword->l << 8) | c; | |
437 | - } | |
438 | -} | |
439 | - | |
440 | - | |
441 | -/*----------------------------------------------------------------------- | |
442 | - * make a proper sized command based on the port and chip widths | |
443 | - */ | |
444 | -static void flash_make_cmd(flash_info_t * info, uchar cmd, void * cmdbuf) | |
445 | -{ | |
446 | - int i; | |
447 | - uchar *cp = (uchar *)cmdbuf; | |
448 | - for(i=0; i< info->portwidth; i++) | |
449 | - *cp++ = ((i+1) % info->chipwidth) ? '\0':cmd; | |
450 | -} | |
451 | - | |
452 | -/* | |
453 | - * Write a proper sized command to the correct address | |
454 | - */ | |
455 | -static void flash_write_cmd(flash_info_t * info, int sect, uchar offset, uchar cmd) | |
456 | -{ | |
457 | - | |
458 | - volatile cfiptr_t addr; | |
459 | - cfiword_t cword; | |
460 | - addr.cp = flash_make_addr(info, sect, offset); | |
461 | - flash_make_cmd(info, cmd, &cword); | |
462 | - switch(info->portwidth) { | |
463 | - case FLASH_CFI_8BIT: | |
464 | - *addr.cp = cword.c; | |
465 | - break; | |
466 | - case FLASH_CFI_16BIT: | |
467 | - *addr.wp = cword.w; | |
468 | - break; | |
469 | - case FLASH_CFI_32BIT: | |
470 | - *addr.lp = cword.l; | |
471 | - break; | |
472 | - } | |
473 | -} | |
474 | - | |
475 | -/*----------------------------------------------------------------------- | |
476 | - */ | |
477 | -static int flash_isequal(flash_info_t * info, int sect, uchar offset, uchar cmd) | |
478 | -{ | |
479 | - cfiptr_t cptr; | |
480 | - cfiword_t cword; | |
481 | - int retval; | |
482 | - cptr.cp = flash_make_addr(info, sect, offset); | |
483 | - flash_make_cmd(info, cmd, &cword); | |
484 | - switch(info->portwidth) { | |
485 | - case FLASH_CFI_8BIT: | |
486 | - retval = (cptr.cp[0] == cword.c); | |
487 | - break; | |
488 | - case FLASH_CFI_16BIT: | |
489 | - retval = (cptr.wp[0] == cword.w); | |
490 | - break; | |
491 | - case FLASH_CFI_32BIT: | |
492 | - retval = (cptr.lp[0] == cword.l); | |
493 | - break; | |
494 | - default: | |
495 | - retval = 0; | |
496 | - break; | |
497 | - } | |
498 | - return retval; | |
499 | -} | |
500 | -/*----------------------------------------------------------------------- | |
501 | - */ | |
502 | -static int flash_isset(flash_info_t * info, int sect, uchar offset, uchar cmd) | |
503 | -{ | |
504 | - cfiptr_t cptr; | |
505 | - cfiword_t cword; | |
506 | - int retval; | |
507 | - cptr.cp = flash_make_addr(info, sect, offset); | |
508 | - flash_make_cmd(info, cmd, &cword); | |
509 | - switch(info->portwidth) { | |
510 | - case FLASH_CFI_8BIT: | |
511 | - retval = ((cptr.cp[0] & cword.c) == cword.c); | |
512 | - break; | |
513 | - case FLASH_CFI_16BIT: | |
514 | - retval = ((cptr.wp[0] & cword.w) == cword.w); | |
515 | - break; | |
516 | - case FLASH_CFI_32BIT: | |
517 | - retval = ((cptr.lp[0] & cword.l) == cword.l); | |
518 | - break; | |
519 | - default: | |
520 | - retval = 0; | |
521 | - break; | |
522 | - } | |
523 | - return retval; | |
524 | -} | |
525 | - | |
526 | -/*----------------------------------------------------------------------- | |
527 | - * detect if flash is compatible with the Common Flash Interface (CFI) | |
528 | - * http://www.jedec.org/download/search/jesd68.pdf | |
529 | - * | |
530 | -*/ | |
531 | -static int flash_detect_cfi(flash_info_t * info) | |
532 | -{ | |
533 | - | |
534 | - for(info->portwidth=FLASH_CFI_8BIT; info->portwidth <= FLASH_CFI_32BIT; | |
535 | - info->portwidth <<= 1) { | |
536 | - for(info->chipwidth =FLASH_CFI_BY8; | |
537 | - info->chipwidth <= info->portwidth; | |
538 | - info->chipwidth <<= 1) { | |
539 | - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); | |
540 | - flash_write_cmd(info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI); | |
541 | - if(flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP,'Q') && | |
542 | - flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') && | |
543 | - flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) | |
544 | - return 1; | |
545 | - } | |
546 | - } | |
547 | - return 0; | |
548 | -} | |
549 | -/* | |
550 | - * The following code cannot be run from FLASH! | |
551 | - * | |
552 | - */ | |
553 | -static ulong flash_get_size (ulong base, int banknum) | |
554 | -{ | |
555 | - flash_info_t * info = &flash_info[banknum]; | |
556 | - int i, j; | |
557 | - int sect_cnt; | |
558 | - unsigned long sector; | |
559 | - unsigned long tmp; | |
560 | - int size_ratio; | |
561 | - uchar num_erase_regions; | |
562 | - int erase_region_size; | |
563 | - int erase_region_count; | |
564 | - | |
565 | - info->start[0] = base; | |
566 | - | |
567 | - if(flash_detect_cfi(info)){ | |
568 | - size_ratio = info->portwidth / info->chipwidth; | |
569 | - num_erase_regions = flash_read_uchar(info, FLASH_OFFSET_NUM_ERASE_REGIONS); | |
570 | -#ifdef DEBUG_FLASH | |
571 | - printf("found %d erase regions\n", num_erase_regions); | |
572 | -#endif | |
573 | - sect_cnt = 0; | |
574 | - sector = base; | |
575 | - for(i = 0 ; i < num_erase_regions; i++) { | |
576 | - if(i > NUM_ERASE_REGIONS) { | |
577 | - printf("%d erase regions found, only %d used\n", | |
578 | - num_erase_regions, NUM_ERASE_REGIONS); | |
579 | - break; | |
580 | - } | |
581 | - tmp = flash_read_long(info, 0, FLASH_OFFSET_ERASE_REGIONS); | |
582 | - erase_region_size = (tmp & 0xffff)? ((tmp & 0xffff) * 256): 128; | |
583 | - tmp >>= 16; | |
584 | - erase_region_count = (tmp & 0xffff) +1; | |
585 | - for(j = 0; j< erase_region_count; j++) { | |
586 | - info->start[sect_cnt] = sector; | |
587 | - sector += (erase_region_size * size_ratio); | |
588 | - info->protect[sect_cnt] = flash_isset(info, sect_cnt, FLASH_OFFSET_PROTECT, FLASH_STATUS_PROTECT); | |
589 | - sect_cnt++; | |
590 | - } | |
591 | - } | |
592 | - | |
593 | - info->sector_count = sect_cnt; | |
594 | - /* multiply the size by the number of chips */ | |
595 | - info->size = (1 << flash_read_uchar(info, FLASH_OFFSET_SIZE)) * size_ratio; | |
596 | - info->buffer_size = (1 << flash_read_ushort(info, 0, FLASH_OFFSET_BUFFER_SIZE)); | |
597 | - tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_ETOUT); | |
598 | - info->erase_blk_tout = (tmp * (1 << flash_read_uchar(info, FLASH_OFFSET_EMAX_TOUT))); | |
599 | - tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_WBTOUT); | |
600 | - info->buffer_write_tout = (tmp * (1 << flash_read_uchar(info, FLASH_OFFSET_WBMAX_TOUT))); | |
601 | - tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_WTOUT); | |
602 | - info->write_tout = (tmp * (1 << flash_read_uchar(info, FLASH_OFFSET_WMAX_TOUT)))/ 1000; | |
603 | - info->flash_id = FLASH_MAN_CFI; | |
604 | - } | |
605 | - | |
606 | - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); | |
607 | - return(info->size); | |
608 | -} | |
609 | - | |
610 | - | |
611 | -/*----------------------------------------------------------------------- | |
612 | - */ | |
613 | -static int flash_write_cfiword (flash_info_t *info, ulong dest, cfiword_t cword) | |
614 | -{ | |
615 | - | |
616 | - cfiptr_t ctladdr; | |
617 | - cfiptr_t cptr; | |
618 | - int flag; | |
619 | - | |
620 | - ctladdr.cp = flash_make_addr(info, 0, 0); | |
621 | - cptr.cp = (uchar *)dest; | |
622 | - | |
623 | - | |
624 | - /* Check if Flash is (sufficiently) erased */ | |
625 | - switch(info->portwidth) { | |
626 | - case FLASH_CFI_8BIT: | |
627 | - flag = ((cptr.cp[0] & cword.c) == cword.c); | |
628 | - break; | |
629 | - case FLASH_CFI_16BIT: | |
630 | - flag = ((cptr.wp[0] & cword.w) == cword.w); | |
631 | - break; | |
632 | - case FLASH_CFI_32BIT: | |
633 | - flag = ((cptr.lp[0] & cword.l) == cword.l); | |
634 | - break; | |
635 | - default: | |
636 | - return 2; | |
637 | - } | |
638 | - if(!flag) | |
639 | - return 2; | |
640 | - | |
641 | - /* Disable interrupts which might cause a timeout here */ | |
642 | - flag = disable_interrupts(); | |
643 | - | |
644 | - flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS); | |
645 | - flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE); | |
646 | - | |
647 | - switch(info->portwidth) { | |
648 | - case FLASH_CFI_8BIT: | |
649 | - cptr.cp[0] = cword.c; | |
650 | - break; | |
651 | - case FLASH_CFI_16BIT: | |
652 | - cptr.wp[0] = cword.w; | |
653 | - break; | |
654 | - case FLASH_CFI_32BIT: | |
655 | - cptr.lp[0] = cword.l; | |
656 | - break; | |
657 | - } | |
658 | - | |
659 | - /* re-enable interrupts if necessary */ | |
660 | - if(flag) | |
661 | - enable_interrupts(); | |
662 | - | |
663 | - return flash_full_status_check(info, 0, info->write_tout, "write"); | |
664 | -} | |
665 | - | |
666 | -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE | |
667 | - | |
668 | -/* loop through the sectors from the highest address | |
669 | - * when the passed address is greater or equal to the sector address | |
670 | - * we have a match | |
671 | - */ | |
672 | -static int find_sector(flash_info_t *info, ulong addr) | |
673 | -{ | |
674 | - int sector; | |
675 | - for(sector = info->sector_count - 1; sector >= 0; sector--) { | |
676 | - if(addr >= info->start[sector]) | |
677 | - break; | |
678 | - } | |
679 | - return sector; | |
680 | -} | |
681 | - | |
682 | -static int flash_write_cfibuffer(flash_info_t * info, ulong dest, uchar * cp, int len) | |
683 | -{ | |
684 | - | |
685 | - int sector; | |
686 | - int cnt; | |
687 | - int retcode; | |
688 | - volatile cfiptr_t src; | |
689 | - volatile cfiptr_t dst; | |
690 | - | |
691 | - src.cp = cp; | |
692 | - dst.cp = (uchar *)dest; | |
693 | - sector = find_sector(info, dest); | |
694 | - flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); | |
695 | - flash_write_cmd(info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER); | |
696 | - if((retcode = flash_status_check(info, sector, info->buffer_write_tout, | |
697 | - "write to buffer")) == ERR_OK) { | |
698 | - switch(info->portwidth) { | |
699 | - case FLASH_CFI_8BIT: | |
700 | - cnt = len; | |
701 | - break; | |
702 | - case FLASH_CFI_16BIT: | |
703 | - cnt = len >> 1; | |
704 | - break; | |
705 | - case FLASH_CFI_32BIT: | |
706 | - cnt = len >> 2; | |
707 | - break; | |
708 | - default: | |
709 | - return ERR_INVAL; | |
710 | - break; | |
711 | - } | |
712 | - flash_write_cmd(info, sector, 0, (uchar)cnt-1); | |
713 | - while(cnt-- > 0) { | |
714 | - switch(info->portwidth) { | |
715 | - case FLASH_CFI_8BIT: | |
716 | - *dst.cp++ = *src.cp++; | |
717 | - break; | |
718 | - case FLASH_CFI_16BIT: | |
719 | - *dst.wp++ = *src.wp++; | |
720 | - break; | |
721 | - case FLASH_CFI_32BIT: | |
722 | - *dst.lp++ = *src.lp++; | |
723 | - break; | |
724 | - default: | |
725 | - return ERR_INVAL; | |
726 | - break; | |
727 | - } | |
728 | - } | |
729 | - flash_write_cmd(info, sector, 0, FLASH_CMD_WRITE_BUFFER_CONFIRM); | |
730 | - retcode = flash_full_status_check(info, sector, info->buffer_write_tout, | |
731 | - "buffer write"); | |
732 | - } | |
733 | - flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); | |
734 | - return retcode; | |
735 | -} | |
736 | -#endif /* CONFIG_SYS_USE_FLASH_BUFFER_WRITE */ |