]> git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/mtd/dataflash.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
NAND: Update read_read_subpage API check
[people/ms/u-boot.git] / drivers / mtd / dataflash.c
1 /* LowLevel function for ATMEL DataFlash support
2 * Author : Hamid Ikdoumi (Atmel)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
17 * MA 02111-1307 USA
18 *
19 */
20 #include <common.h>
21 #include <config.h>
22 #include <asm/hardware.h>
23 #include <dataflash.h>
24
25 static AT91S_DataFlash DataFlashInst;
26
27 extern void AT91F_SpiInit (void);
28 extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
29 extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
30 unsigned long addr,
31 unsigned long size, char *buffer);
32 extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
33 unsigned char *src,
34 int dest,
35 int size );
36
37 int AT91F_DataflashInit (void)
38 {
39 int i, j;
40 int dfcode;
41 int part;
42 int last_part;
43 int found[CONFIG_SYS_MAX_DATAFLASH_BANKS];
44 unsigned char protected;
45
46 AT91F_SpiInit ();
47
48 for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
49 found[i] = 0;
50 dataflash_info[i].Desc.state = IDLE;
51 dataflash_info[i].id = 0;
52 dataflash_info[i].Device.pages_number = 0;
53 dfcode = AT91F_DataflashProbe (cs[i].cs,
54 &dataflash_info[i].Desc);
55
56 switch (dfcode) {
57 case AT45DB021:
58 dataflash_info[i].Device.pages_number = 1024;
59 dataflash_info[i].Device.pages_size = 264;
60 dataflash_info[i].Device.page_offset = 9;
61 dataflash_info[i].Device.byte_mask = 0x300;
62 dataflash_info[i].Device.cs = cs[i].cs;
63 dataflash_info[i].Desc.DataFlash_state = IDLE;
64 dataflash_info[i].logical_address = cs[i].addr;
65 dataflash_info[i].id = dfcode;
66 found[i] += dfcode;;
67 break;
68
69 case AT45DB081:
70 dataflash_info[i].Device.pages_number = 4096;
71 dataflash_info[i].Device.pages_size = 264;
72 dataflash_info[i].Device.page_offset = 9;
73 dataflash_info[i].Device.byte_mask = 0x300;
74 dataflash_info[i].Device.cs = cs[i].cs;
75 dataflash_info[i].Desc.DataFlash_state = IDLE;
76 dataflash_info[i].logical_address = cs[i].addr;
77 dataflash_info[i].id = dfcode;
78 found[i] += dfcode;;
79 break;
80
81 case AT45DB161:
82 dataflash_info[i].Device.pages_number = 4096;
83 dataflash_info[i].Device.pages_size = 528;
84 dataflash_info[i].Device.page_offset = 10;
85 dataflash_info[i].Device.byte_mask = 0x300;
86 dataflash_info[i].Device.cs = cs[i].cs;
87 dataflash_info[i].Desc.DataFlash_state = IDLE;
88 dataflash_info[i].logical_address = cs[i].addr;
89 dataflash_info[i].id = dfcode;
90 found[i] += dfcode;;
91 break;
92
93 case AT45DB321:
94 dataflash_info[i].Device.pages_number = 8192;
95 dataflash_info[i].Device.pages_size = 528;
96 dataflash_info[i].Device.page_offset = 10;
97 dataflash_info[i].Device.byte_mask = 0x300;
98 dataflash_info[i].Device.cs = cs[i].cs;
99 dataflash_info[i].Desc.DataFlash_state = IDLE;
100 dataflash_info[i].logical_address = cs[i].addr;
101 dataflash_info[i].id = dfcode;
102 found[i] += dfcode;;
103 break;
104
105 case AT45DB642:
106 dataflash_info[i].Device.pages_number = 8192;
107 dataflash_info[i].Device.pages_size = 1056;
108 dataflash_info[i].Device.page_offset = 11;
109 dataflash_info[i].Device.byte_mask = 0x700;
110 dataflash_info[i].Device.cs = cs[i].cs;
111 dataflash_info[i].Desc.DataFlash_state = IDLE;
112 dataflash_info[i].logical_address = cs[i].addr;
113 dataflash_info[i].id = dfcode;
114 found[i] += dfcode;;
115 break;
116
117 case AT45DB128:
118 dataflash_info[i].Device.pages_number = 16384;
119 dataflash_info[i].Device.pages_size = 1056;
120 dataflash_info[i].Device.page_offset = 11;
121 dataflash_info[i].Device.byte_mask = 0x700;
122 dataflash_info[i].Device.cs = cs[i].cs;
123 dataflash_info[i].Desc.DataFlash_state = IDLE;
124 dataflash_info[i].logical_address = cs[i].addr;
125 dataflash_info[i].id = dfcode;
126 found[i] += dfcode;;
127 break;
128
129 default:
130 dfcode = 0;
131 break;
132 }
133 /* set the last area end to the dataflash size*/
134 dataflash_info[i].end_address =
135 (dataflash_info[i].Device.pages_number *
136 dataflash_info[i].Device.pages_size) - 1;
137
138 part = 0;
139 last_part = 0;
140 /* set the area addresses */
141 for(j = 0; j < NB_DATAFLASH_AREA; j++) {
142 if(found[i]!=0) {
143 dataflash_info[i].Device.area_list[j].start =
144 area_list[part].start +
145 dataflash_info[i].logical_address;
146 if(area_list[part].end == 0xffffffff) {
147 dataflash_info[i].Device.area_list[j].end =
148 dataflash_info[i].end_address +
149 dataflash_info[i].logical_address;
150 last_part = 1;
151 } else {
152 dataflash_info[i].Device.area_list[j].end =
153 area_list[part].end +
154 dataflash_info[i].logical_address;
155 }
156 protected = area_list[part].protected;
157 /* Set the environment according to the label...*/
158 if(protected == FLAG_PROTECT_INVALID) {
159 dataflash_info[i].Device.area_list[j].protected =
160 FLAG_PROTECT_INVALID;
161 } else {
162 dataflash_info[i].Device.area_list[j].protected =
163 protected;
164 }
165 strcpy((char*)(dataflash_info[i].Device.area_list[j].label),
166 (const char *)area_list[part].label);
167 }
168 part++;
169 }
170 }
171 return found[0];
172 }
173
174 void AT91F_DataflashSetEnv (void)
175 {
176 int i, j;
177 int part;
178 unsigned char env;
179 unsigned char s[32]; /* Will fit a long int in hex */
180 unsigned long start;
181
182 for (i = 0, part= 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
183 for(j = 0; j < NB_DATAFLASH_AREA; j++) {
184 env = area_list[part].setenv;
185 /* Set the environment according to the label...*/
186 if((env & FLAG_SETENV) == FLAG_SETENV) {
187 start = dataflash_info[i].Device.area_list[j].start;
188 sprintf((char*) s,"%lX",start);
189 setenv((char*) area_list[part].label,(char*) s);
190 }
191 part++;
192 }
193 }
194 }
195
196 void dataflash_print_info (void)
197 {
198 int i, j;
199
200 for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
201 if (dataflash_info[i].id != 0) {
202 printf("DataFlash:");
203 switch (dataflash_info[i].id) {
204 case AT45DB021:
205 printf("AT45DB021\n");
206 break;
207 case AT45DB161:
208 printf("AT45DB161\n");
209 break;
210
211 case AT45DB321:
212 printf("AT45DB321\n");
213 break;
214
215 case AT45DB642:
216 printf("AT45DB642\n");
217 break;
218 case AT45DB128:
219 printf("AT45DB128\n");
220 break;
221 }
222
223 printf("Nb pages: %6d\n"
224 "Page Size: %6d\n"
225 "Size=%8d bytes\n"
226 "Logical address: 0x%08X\n",
227 (unsigned int) dataflash_info[i].Device.pages_number,
228 (unsigned int) dataflash_info[i].Device.pages_size,
229 (unsigned int) dataflash_info[i].Device.pages_number *
230 dataflash_info[i].Device.pages_size,
231 (unsigned int) dataflash_info[i].logical_address);
232 for (j = 0; j < NB_DATAFLASH_AREA; j++) {
233 switch(dataflash_info[i].Device.area_list[j].protected) {
234 case FLAG_PROTECT_SET:
235 case FLAG_PROTECT_CLEAR:
236 printf("Area %i:\t%08lX to %08lX %s", j,
237 dataflash_info[i].Device.area_list[j].start,
238 dataflash_info[i].Device.area_list[j].end,
239 (dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : " ");
240 printf(" %s\n", dataflash_info[i].Device.area_list[j].label);
241 break;
242 case FLAG_PROTECT_INVALID:
243 break;
244 }
245 }
246 }
247 }
248 }
249
250 /*---------------------------------------------------------------------------*/
251 /* Function Name : AT91F_DataflashSelect */
252 /* Object : Select the correct device */
253 /*---------------------------------------------------------------------------*/
254 AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
255 unsigned long *addr)
256 {
257 char addr_valid = 0;
258 int i;
259
260 for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++)
261 if ( dataflash_info[i].id
262 && ((((int) *addr) & 0xFF000000) ==
263 dataflash_info[i].logical_address)) {
264 addr_valid = 1;
265 break;
266 }
267 if (!addr_valid) {
268 pFlash = (AT91PS_DataFlash) 0;
269 return pFlash;
270 }
271 pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
272 pFlash->pDevice = &(dataflash_info[i].Device);
273 *addr -= dataflash_info[i].logical_address;
274 return (pFlash);
275 }
276
277 /*---------------------------------------------------------------------------*/
278 /* Function Name : addr_dataflash */
279 /* Object : Test if address is valid */
280 /*---------------------------------------------------------------------------*/
281 int addr_dataflash (unsigned long addr)
282 {
283 int addr_valid = 0;
284 int i;
285
286 for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
287 if ((((int) addr) & 0xFF000000) ==
288 dataflash_info[i].logical_address) {
289 addr_valid = 1;
290 break;
291 }
292 }
293
294 return addr_valid;
295 }
296
297 /*---------------------------------------------------------------------------*/
298 /* Function Name : size_dataflash */
299 /* Object : Test if address is valid regarding the size */
300 /*---------------------------------------------------------------------------*/
301 int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr,
302 unsigned long size)
303 {
304 /* is outside the dataflash */
305 if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
306 pdataFlash->pDevice->pages_number)) return 0;
307 /* is too large for the dataflash */
308 if (size > ((pdataFlash->pDevice->pages_size *
309 pdataFlash->pDevice->pages_number) -
310 ((int)addr & 0x0FFFFFFF))) return 0;
311
312 return 1;
313 }
314
315 /*---------------------------------------------------------------------------*/
316 /* Function Name : prot_dataflash */
317 /* Object : Test if destination area is protected */
318 /*---------------------------------------------------------------------------*/
319 int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
320 {
321 int area;
322
323 /* find area */
324 for (area = 0; area < NB_DATAFLASH_AREA; area++) {
325 if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
326 (addr < pdataFlash->pDevice->area_list[area].end))
327 break;
328 }
329 if (area == NB_DATAFLASH_AREA)
330 return -1;
331
332 /*test protection value*/
333 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET)
334 return 0;
335 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID)
336 return 0;
337
338 return 1;
339 }
340
341 /*--------------------------------------------------------------------------*/
342 /* Function Name : dataflash_real_protect */
343 /* Object : protect/unprotect area */
344 /*--------------------------------------------------------------------------*/
345 int dataflash_real_protect (int flag, unsigned long start_addr,
346 unsigned long end_addr)
347 {
348 int i,j, area1, area2, addr_valid = 0;
349
350 /* find dataflash */
351 for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
352 if ((((int) start_addr) & 0xF0000000) ==
353 dataflash_info[i].logical_address) {
354 addr_valid = 1;
355 break;
356 }
357 }
358 if (!addr_valid) {
359 return -1;
360 }
361 /* find start area */
362 for (area1 = 0; area1 < NB_DATAFLASH_AREA; area1++) {
363 if (start_addr == dataflash_info[i].Device.area_list[area1].start)
364 break;
365 }
366 if (area1 == NB_DATAFLASH_AREA) return -1;
367 /* find end area */
368 for (area2 = 0; area2 < NB_DATAFLASH_AREA; area2++) {
369 if (end_addr == dataflash_info[i].Device.area_list[area2].end)
370 break;
371 }
372 if (area2 == NB_DATAFLASH_AREA)
373 return -1;
374
375 /*set protection value*/
376 for(j = area1; j < area2 + 1 ; j++)
377 if(dataflash_info[i].Device.area_list[j].protected
378 != FLAG_PROTECT_INVALID) {
379 if (flag == 0) {
380 dataflash_info[i].Device.area_list[j].protected
381 = FLAG_PROTECT_CLEAR;
382 } else {
383 dataflash_info[i].Device.area_list[j].protected
384 = FLAG_PROTECT_SET;
385 }
386 }
387
388 return (area2 - area1 + 1);
389 }
390
391 /*---------------------------------------------------------------------------*/
392 /* Function Name : read_dataflash */
393 /* Object : dataflash memory read */
394 /*---------------------------------------------------------------------------*/
395 int read_dataflash (unsigned long addr, unsigned long size, char *result)
396 {
397 unsigned long AddrToRead = addr;
398 AT91PS_DataFlash pFlash = &DataFlashInst;
399
400 pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
401
402 if (pFlash == 0)
403 return ERR_UNKNOWN_FLASH_TYPE;
404
405 if (size_dataflash(pFlash,addr,size) == 0)
406 return ERR_INVAL;
407
408 return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
409 }
410
411 /*---------------------------------------------------------------------------*/
412 /* Function Name : write_dataflash */
413 /* Object : write a block in dataflash */
414 /*---------------------------------------------------------------------------*/
415 int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
416 unsigned long size)
417 {
418 unsigned long AddrToWrite = addr_dest;
419 AT91PS_DataFlash pFlash = &DataFlashInst;
420
421 pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
422
423 if (pFlash == 0)
424 return ERR_UNKNOWN_FLASH_TYPE;
425
426 if (size_dataflash(pFlash,addr_dest,size) == 0)
427 return ERR_INVAL;
428
429 if (prot_dataflash(pFlash,addr_dest) == 0)
430 return ERR_PROTECTED;
431
432 if (AddrToWrite == -1)
433 return -1;
434
435 return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src,
436 AddrToWrite, size);
437 }
438
439 void dataflash_perror (int err)
440 {
441 switch (err) {
442 case ERR_OK:
443 break;
444 case ERR_TIMOUT:
445 printf("Timeout writing to DataFlash\n");
446 break;
447 case ERR_PROTECTED:
448 printf("Can't write to protected/invalid DataFlash sectors\n");
449 break;
450 case ERR_INVAL:
451 printf("Outside available DataFlash\n");
452 break;
453 case ERR_UNKNOWN_FLASH_TYPE:
454 printf("Unknown Type of DataFlash\n");
455 break;
456 case ERR_PROG_ERROR:
457 printf("General DataFlash Programming Error\n");
458 break;
459 default:
460 printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
461 break;
462 }
463 }
"Das U-Boot" Source Tree