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MINI2440: Remove the extraneous PLL config at startup
[u-boot-openmoko/mini2440.git] / drivers / mtd / dataflash.c
blobd8f78f20a8a192df41d3ab3b7eb3592f6bff3bfa
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 AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
26 static AT91S_DataFlash DataFlashInst;
27
28 struct dataflash_addr {
29 unsigned long addr;
30 int cs;
31 };
32
33 #if defined(CONFIG_AT91SAM9260EK)
34 struct dataflash_addr cs[CFG_MAX_DATAFLASH_BANKS] = {
35 {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
36 {CFG_DATAFLASH_LOGIC_ADDR_CS1, 1}
37 };
38 #elif defined(CONFIG_AT91SAM9263EK) || defined(CONFIG_AT91CAP9ADK)
39 struct dataflash_addr cs[CFG_MAX_DATAFLASH_BANKS] = {
40 {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
41 };
42 #else
43 struct dataflash_addr cs[CFG_MAX_DATAFLASH_BANKS] = {
44 {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
45 {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
46 };
47 #endif
48
49 /*define the area offsets*/
50 dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
51 {0x00000000, 0x000041FF, FLAG_PROTECT_SET, 0, "Bootstrap"},
52 {0x00004200, 0x000083FF, FLAG_PROTECT_CLEAR, 0, "Environment"},
53 {0x00008400, 0x0003DDFF, FLAG_PROTECT_SET, 0, "U-Boot"},
54 {0x0003DE00, 0x0023DE3F, FLAG_PROTECT_CLEAR, 0, "Kernel"},
55 {0x0023DE40, 0xFFFFFFFF, FLAG_PROTECT_CLEAR, 0, "FS"},
56 };
57
58 extern void AT91F_SpiInit (void);
59 extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
60 extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
61 unsigned long addr,
62 unsigned long size, char *buffer);
63 extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
64 unsigned char *src,
65 int dest,
66 int size );
67
68 int AT91F_DataflashInit (void)
69 {
70 int i, j;
71 int dfcode;
72 int part;
73 int last_part;
74 int found[CFG_MAX_DATAFLASH_BANKS];
75 unsigned char protected;
76
77 AT91F_SpiInit ();
78
79 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
80 found[i] = 0;
81 dataflash_info[i].Desc.state = IDLE;
82 dataflash_info[i].id = 0;
83 dataflash_info[i].Device.pages_number = 0;
84 dfcode = AT91F_DataflashProbe (cs[i].cs,
85 &dataflash_info[i].Desc);
86
87 switch (dfcode) {
88 case AT45DB161:
89 dataflash_info[i].Device.pages_number = 4096;
90 dataflash_info[i].Device.pages_size = 528;
91 dataflash_info[i].Device.page_offset = 10;
92 dataflash_info[i].Device.byte_mask = 0x300;
93 dataflash_info[i].Device.cs = cs[i].cs;
94 dataflash_info[i].Desc.DataFlash_state = IDLE;
95 dataflash_info[i].logical_address = cs[i].addr;
96 dataflash_info[i].id = dfcode;
97 found[i] += dfcode;;
98 break;
99
100 case AT45DB321:
101 dataflash_info[i].Device.pages_number = 8192;
102 dataflash_info[i].Device.pages_size = 528;
103 dataflash_info[i].Device.page_offset = 10;
104 dataflash_info[i].Device.byte_mask = 0x300;
105 dataflash_info[i].Device.cs = cs[i].cs;
106 dataflash_info[i].Desc.DataFlash_state = IDLE;
107 dataflash_info[i].logical_address = cs[i].addr;
108 dataflash_info[i].id = dfcode;
109 found[i] += dfcode;;
110 break;
111
112 case AT45DB642:
113 dataflash_info[i].Device.pages_number = 8192;
114 dataflash_info[i].Device.pages_size = 1056;
115 dataflash_info[i].Device.page_offset = 11;
116 dataflash_info[i].Device.byte_mask = 0x700;
117 dataflash_info[i].Device.cs = cs[i].cs;
118 dataflash_info[i].Desc.DataFlash_state = IDLE;
119 dataflash_info[i].logical_address = cs[i].addr;
120 dataflash_info[i].id = dfcode;
121 found[i] += dfcode;;
122 break;
123
124 case AT45DB128:
125 dataflash_info[i].Device.pages_number = 16384;
126 dataflash_info[i].Device.pages_size = 1056;
127 dataflash_info[i].Device.page_offset = 11;
128 dataflash_info[i].Device.byte_mask = 0x700;
129 dataflash_info[i].Device.cs = cs[i].cs;
130 dataflash_info[i].Desc.DataFlash_state = IDLE;
131 dataflash_info[i].logical_address = cs[i].addr;
132 dataflash_info[i].id = dfcode;
133 found[i] += dfcode;;
134 break;
135
136 default:
137 dfcode = 0;
138 break;
139 }
140 /* set the last area end to the dataflash size*/
141 area_list[NB_DATAFLASH_AREA -1].end =
142 (dataflash_info[i].Device.pages_number *
143 dataflash_info[i].Device.pages_size)-1;
144
145 part = 0;
146 last_part = 0;
147 /* set the area addresses */
148 for(j = 0; j<NB_DATAFLASH_AREA; j++) {
149 if(found[i]!=0) {
150 dataflash_info[i].Device.area_list[j].start =
151 area_list[part].start +
152 dataflash_info[i].logical_address;
153 if(area_list[part].end == 0xffffffff) {
154 dataflash_info[i].Device.area_list[j].end =
155 dataflash_info[i].end_address +
156 dataflash_info [i].logical_address;
157 last_part = 1;
158 } else {
159 dataflash_info[i].Device.area_list[j].end =
160 area_list[part].end +
161 dataflash_info[i].logical_address;
162 }
163 protected = area_list[part].protected;
164 /* Set the environment according to the label...*/
165 if(protected == FLAG_PROTECT_INVALID) {
166 dataflash_info[i].Device.area_list[j].protected =
167 FLAG_PROTECT_INVALID;
168 } else {
169 dataflash_info[i].Device.area_list[j].protected =
170 protected;
171 }
172 strcpy((char*)(dataflash_info[i].Device.area_list[j].label),
173 (const char *)area_list[part].label);
174 }
175 part++;
176 }
177 }
178 return found[0];
179 }
180
181 #ifdef CONFIG_NEW_DF_PARTITION
182 int AT91F_DataflashSetEnv (void)
183 {
184 int i, j;
185 int part;
186 unsigned char env;
187 unsigned char s[32]; /* Will fit a long int in hex */
188 unsigned long start;
189
190 for (i = 0, part= 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
191 for(j = 0; j<NB_DATAFLASH_AREA; j++) {
192 env = area_list[part].setenv;
193 /* Set the environment according to the label...*/
194 if((env & FLAG_SETENV) == FLAG_SETENV) {
195 start =
196 dataflash_info[i].Device.area_list[j].start;
197 sprintf(s,"%X",start);
198 setenv(area_list[part].label,s);
199 }
200 part++;
201 }
202 }
203 }
204 #endif
205
206 void dataflash_print_info (void)
207 {
208 int i, j;
209
210 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
211 if (dataflash_info[i].id != 0) {
212 printf("DataFlash:");
213 switch (dataflash_info[i].id) {
214 case AT45DB161:
215 printf("AT45DB161\n");
216 break;
217
218 case AT45DB321:
219 printf("AT45DB321\n");
220 break;
221
222 case AT45DB642:
223 printf("AT45DB642\n");
224 break;
225 case AT45DB128:
226 printf("AT45DB128\n");
227 break;
228 }
229
230 printf("Nb pages: %6d\n"
231 "Page Size: %6d\n"
232 "Size=%8d bytes\n"
233 "Logical address: 0x%08X\n",
234 (unsigned int) dataflash_info[i].Device.pages_number,
235 (unsigned int) dataflash_info[i].Device.pages_size,
236 (unsigned int) dataflash_info[i].Device.pages_number *
237 dataflash_info[i].Device.pages_size,
238 (unsigned int) dataflash_info[i].logical_address);
239 for (j=0; j< NB_DATAFLASH_AREA; j++) {
240 switch(dataflash_info[i].Device.area_list[j].protected) {
241 case FLAG_PROTECT_SET:
242 case FLAG_PROTECT_CLEAR:
243 printf("Area %i:\t%08lX to %08lX %s", j,
244 dataflash_info[i].Device.area_list[j].start,
245 dataflash_info[i].Device.area_list[j].end,
246 (dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : " ");
247 #ifdef CONFIG_NEW_DF_PARTITION
248 printf(" %s\n", dataflash_info[i].Device.area_list[j].label);
249 #else
250 printf("\n");
251 #endif
252 break;
253 #ifdef CONFIG_NEW_DF_PARTITION
254 case FLAG_PROTECT_INVALID:
255 break;
256 #endif
257 }
258 }
259 }
260 }
261 }
262
263 /*---------------------------------------------------------------------------*/
264 /* Function Name : AT91F_DataflashSelect */
265 /* Object : Select the correct device */
266 /*---------------------------------------------------------------------------*/
267 AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
268 unsigned long *addr)
269 {
270 char addr_valid = 0;
271 int i;
272
273 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
274 if ( dataflash_info[i].id
275 && ((((int) *addr) & 0xFF000000) ==
276 dataflash_info[i].logical_address)) {
277 addr_valid = 1;
278 break;
279 }
280 if (!addr_valid) {
281 pFlash = (AT91PS_DataFlash) 0;
282 return pFlash;
283 }
284 pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
285 pFlash->pDevice = &(dataflash_info[i].Device);
286 *addr -= dataflash_info[i].logical_address;
287 return (pFlash);
288 }
289
290 /*---------------------------------------------------------------------------*/
291 /* Function Name : addr_dataflash */
292 /* Object : Test if address is valid */
293 /*---------------------------------------------------------------------------*/
294 int addr_dataflash (unsigned long addr)
295 {
296 int addr_valid = 0;
297 int i;
298
299 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
300 if ((((int) addr) & 0xFF000000) ==
301 dataflash_info[i].logical_address) {
302 addr_valid = 1;
303 break;
304 }
305 }
306
307 return addr_valid;
308 }
309
310 /*---------------------------------------------------------------------------*/
311 /* Function Name : size_dataflash */
312 /* Object : Test if address is valid regarding the size */
313 /*---------------------------------------------------------------------------*/
314 int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr,
315 unsigned long size)
316 {
317 /* is outside the dataflash */
318 if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
319 pdataFlash->pDevice->pages_number)) return 0;
320 /* is too large for the dataflash */
321 if (size > ((pdataFlash->pDevice->pages_size *
322 pdataFlash->pDevice->pages_number) -
323 ((int)addr & 0x0FFFFFFF))) return 0;
324
325 return 1;
326 }
327
328 /*---------------------------------------------------------------------------*/
329 /* Function Name : prot_dataflash */
330 /* Object : Test if destination area is protected */
331 /*---------------------------------------------------------------------------*/
332 int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
333 {
334 int area;
335
336 /* find area */
337 for (area=0; area < NB_DATAFLASH_AREA; area++) {
338 if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
339 (addr < pdataFlash->pDevice->area_list[area].end))
340 break;
341 }
342 if (area == NB_DATAFLASH_AREA)
343 return -1;
344
345 /*test protection value*/
346 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET)
347 return 0;
348 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID)
349 return 0;
350
351 return 1;
352 }
353
354 /*--------------------------------------------------------------------------*/
355 /* Function Name : dataflash_real_protect */
356 /* Object : protect/unprotect area */
357 /*--------------------------------------------------------------------------*/
358 int dataflash_real_protect (int flag, unsigned long start_addr,
359 unsigned long end_addr)
360 {
361 int i,j, area1, area2, addr_valid = 0;
362
363 /* find dataflash */
364 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
365 if ((((int) start_addr) & 0xF0000000) ==
366 dataflash_info[i].logical_address) {
367 addr_valid = 1;
368 break;
369 }
370 }
371 if (!addr_valid) {
372 return -1;
373 }
374 /* find start area */
375 for (area1=0; area1 < NB_DATAFLASH_AREA; area1++) {
376 if (start_addr == dataflash_info[i].Device.area_list[area1].start)
377 break;
378 }
379 if (area1 == NB_DATAFLASH_AREA) return -1;
380 /* find end area */
381 for (area2=0; area2 < NB_DATAFLASH_AREA; area2++) {
382 if (end_addr == dataflash_info[i].Device.area_list[area2].end)
383 break;
384 }
385 if (area2 == NB_DATAFLASH_AREA)
386 return -1;
387
388 /*set protection value*/
389 for(j = area1; j < area2+1 ; j++)
390 if(dataflash_info[i].Device.area_list[j].protected
391 != FLAG_PROTECT_INVALID) {
392 if (flag == 0) {
393 dataflash_info[i].Device.area_list[j].protected
394 = FLAG_PROTECT_CLEAR;
395 } else {
396 dataflash_info[i].Device.area_list[j].protected
397 = FLAG_PROTECT_SET;
398 }
399 }
400
401 return (area2-area1+1);
402 }
403
404 /*---------------------------------------------------------------------------*/
405 /* Function Name : read_dataflash */
406 /* Object : dataflash memory read */
407 /*---------------------------------------------------------------------------*/
408 int read_dataflash (unsigned long addr, unsigned long size, char *result)
409 {
410 unsigned long AddrToRead = addr;
411 AT91PS_DataFlash pFlash = &DataFlashInst;
412
413 pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
414
415 if (pFlash == 0)
416 return ERR_UNKNOWN_FLASH_TYPE;
417
418 if (size_dataflash(pFlash,addr,size) == 0)
419 return ERR_INVAL;
420
421 return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
422 }
423
424 /*---------------------------------------------------------------------------*/
425 /* Function Name : write_dataflash */
426 /* Object : write a block in dataflash */
427 /*---------------------------------------------------------------------------*/
428 int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
429 unsigned long size)
430 {
431 unsigned long AddrToWrite = addr_dest;
432 AT91PS_DataFlash pFlash = &DataFlashInst;
433
434 pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
435
436 if (pFlash == 0)
437 return ERR_UNKNOWN_FLASH_TYPE;
438
439 if (size_dataflash(pFlash,addr_dest,size) == 0)
440 return ERR_INVAL;
441
442 if (prot_dataflash(pFlash,addr_dest) == 0)
443 return ERR_PROTECTED;
444
445 if (AddrToWrite == -1)
446 return -1;
447
448 return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src,
449 AddrToWrite, size);
450 }
451
452 void dataflash_perror (int err)
453 {
454 switch (err) {
455 case ERR_OK:
456 break;
457 case ERR_TIMOUT:
458 printf("Timeout writing to DataFlash\n");
459 break;
460 case ERR_PROTECTED:
461 printf("Can't write to protected/invalid DataFlash sectors\n");
462 break;
463 case ERR_INVAL:
464 printf("Outside available DataFlash\n");
465 break;
466 case ERR_UNKNOWN_FLASH_TYPE:
467 printf("Unknown Type of DataFlash\n");
468 break;
469 case ERR_PROG_ERROR:
470 printf("General DataFlash Programming Error\n");
471 break;
472 default:
473 printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
474 break;
475 }
476 }
Fork of the u-boot for for Samsung based MINI2440 board