1 /* LowLevel function for ATMEL DataFlash support
2 * Author : Hamid Ikdoumi (Atmel)
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.
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.
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,
22 #include <asm/hardware.h>
23 #include <dataflash.h>
25 static AT91S_DataFlash DataFlashInst;
27 extern void AT91F_SpiInit (void);
28 extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
29 extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
31 unsigned long size, char *buffer);
32 extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
37 int AT91F_DataflashInit (void)
43 int found[CFG_MAX_DATAFLASH_BANKS];
44 unsigned char protected;
48 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
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);
58 dataflash_info[i].Device.pages_number = 1024;
59 dataflash_info[i].Device.pages_size = 263;
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;
69 dataflash_info[i].Device.pages_number = 4096;
70 dataflash_info[i].Device.pages_size = 528;
71 dataflash_info[i].Device.page_offset = 10;
72 dataflash_info[i].Device.byte_mask = 0x300;
73 dataflash_info[i].Device.cs = cs[i].cs;
74 dataflash_info[i].Desc.DataFlash_state = IDLE;
75 dataflash_info[i].logical_address = cs[i].addr;
76 dataflash_info[i].id = dfcode;
81 dataflash_info[i].Device.pages_number = 8192;
82 dataflash_info[i].Device.pages_size = 528;
83 dataflash_info[i].Device.page_offset = 10;
84 dataflash_info[i].Device.byte_mask = 0x300;
85 dataflash_info[i].Device.cs = cs[i].cs;
86 dataflash_info[i].Desc.DataFlash_state = IDLE;
87 dataflash_info[i].logical_address = cs[i].addr;
88 dataflash_info[i].id = dfcode;
93 dataflash_info[i].Device.pages_number = 8192;
94 dataflash_info[i].Device.pages_size = 1056;
95 dataflash_info[i].Device.page_offset = 11;
96 dataflash_info[i].Device.byte_mask = 0x700;
97 dataflash_info[i].Device.cs = cs[i].cs;
98 dataflash_info[i].Desc.DataFlash_state = IDLE;
99 dataflash_info[i].logical_address = cs[i].addr;
100 dataflash_info[i].id = dfcode;
105 dataflash_info[i].Device.pages_number = 16384;
106 dataflash_info[i].Device.pages_size = 1056;
107 dataflash_info[i].Device.page_offset = 11;
108 dataflash_info[i].Device.byte_mask = 0x700;
109 dataflash_info[i].Device.cs = cs[i].cs;
110 dataflash_info[i].Desc.DataFlash_state = IDLE;
111 dataflash_info[i].logical_address = cs[i].addr;
112 dataflash_info[i].id = dfcode;
120 /* set the last area end to the dataflash size*/
121 area_list[NB_DATAFLASH_AREA -1].end =
122 (dataflash_info[i].Device.pages_number *
123 dataflash_info[i].Device.pages_size)-1;
127 /* set the area addresses */
128 for(j = 0; j<NB_DATAFLASH_AREA; j++) {
130 dataflash_info[i].Device.area_list[j].start =
131 area_list[part].start +
132 dataflash_info[i].logical_address;
133 if(area_list[part].end == 0xffffffff) {
134 dataflash_info[i].Device.area_list[j].end =
135 dataflash_info[i].end_address +
136 dataflash_info [i].logical_address;
139 dataflash_info[i].Device.area_list[j].end =
140 area_list[part].end +
141 dataflash_info[i].logical_address;
143 protected = area_list[part].protected;
144 /* Set the environment according to the label...*/
145 if(protected == FLAG_PROTECT_INVALID) {
146 dataflash_info[i].Device.area_list[j].protected =
147 FLAG_PROTECT_INVALID;
149 dataflash_info[i].Device.area_list[j].protected =
152 strcpy((char*)(dataflash_info[i].Device.area_list[j].label),
153 (const char *)area_list[part].label);
161 void AT91F_DataflashSetEnv (void)
166 unsigned char s[32]; /* Will fit a long int in hex */
169 for (i = 0, part= 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
170 for(j = 0; j<NB_DATAFLASH_AREA; j++) {
171 env = area_list[part].setenv;
172 /* Set the environment according to the label...*/
173 if((env & FLAG_SETENV) == FLAG_SETENV) {
175 dataflash_info[i].Device.area_list[j].start;
176 sprintf((char*) s,"%X",start);
177 setenv((char*) area_list[part].label,(char*) s);
184 void dataflash_print_info (void)
188 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
189 if (dataflash_info[i].id != 0) {
190 printf("DataFlash:");
191 switch (dataflash_info[i].id) {
193 printf("AT45DB021\n");
196 printf("AT45DB161\n");
200 printf("AT45DB321\n");
204 printf("AT45DB642\n");
207 printf("AT45DB128\n");
211 printf("Nb pages: %6d\n"
214 "Logical address: 0x%08X\n",
215 (unsigned int) dataflash_info[i].Device.pages_number,
216 (unsigned int) dataflash_info[i].Device.pages_size,
217 (unsigned int) dataflash_info[i].Device.pages_number *
218 dataflash_info[i].Device.pages_size,
219 (unsigned int) dataflash_info[i].logical_address);
220 for (j=0; j< NB_DATAFLASH_AREA; j++) {
221 switch(dataflash_info[i].Device.area_list[j].protected) {
222 case FLAG_PROTECT_SET:
223 case FLAG_PROTECT_CLEAR:
224 printf("Area %i:\t%08lX to %08lX %s", j,
225 dataflash_info[i].Device.area_list[j].start,
226 dataflash_info[i].Device.area_list[j].end,
227 (dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : " ");
228 printf(" %s\n", dataflash_info[i].Device.area_list[j].label);
230 case FLAG_PROTECT_INVALID:
238 /*---------------------------------------------------------------------------*/
239 /* Function Name : AT91F_DataflashSelect */
240 /* Object : Select the correct device */
241 /*---------------------------------------------------------------------------*/
242 AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
248 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
249 if ( dataflash_info[i].id
250 && ((((int) *addr) & 0xFF000000) ==
251 dataflash_info[i].logical_address)) {
256 pFlash = (AT91PS_DataFlash) 0;
259 pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
260 pFlash->pDevice = &(dataflash_info[i].Device);
261 *addr -= dataflash_info[i].logical_address;
265 /*---------------------------------------------------------------------------*/
266 /* Function Name : addr_dataflash */
267 /* Object : Test if address is valid */
268 /*---------------------------------------------------------------------------*/
269 int addr_dataflash (unsigned long addr)
274 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
275 if ((((int) addr) & 0xFF000000) ==
276 dataflash_info[i].logical_address) {
285 /*---------------------------------------------------------------------------*/
286 /* Function Name : size_dataflash */
287 /* Object : Test if address is valid regarding the size */
288 /*---------------------------------------------------------------------------*/
289 int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr,
292 /* is outside the dataflash */
293 if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
294 pdataFlash->pDevice->pages_number)) return 0;
295 /* is too large for the dataflash */
296 if (size > ((pdataFlash->pDevice->pages_size *
297 pdataFlash->pDevice->pages_number) -
298 ((int)addr & 0x0FFFFFFF))) return 0;
303 /*---------------------------------------------------------------------------*/
304 /* Function Name : prot_dataflash */
305 /* Object : Test if destination area is protected */
306 /*---------------------------------------------------------------------------*/
307 int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
312 for (area=0; area < NB_DATAFLASH_AREA; area++) {
313 if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
314 (addr < pdataFlash->pDevice->area_list[area].end))
317 if (area == NB_DATAFLASH_AREA)
320 /*test protection value*/
321 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET)
323 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID)
329 /*--------------------------------------------------------------------------*/
330 /* Function Name : dataflash_real_protect */
331 /* Object : protect/unprotect area */
332 /*--------------------------------------------------------------------------*/
333 int dataflash_real_protect (int flag, unsigned long start_addr,
334 unsigned long end_addr)
336 int i,j, area1, area2, addr_valid = 0;
339 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
340 if ((((int) start_addr) & 0xF0000000) ==
341 dataflash_info[i].logical_address) {
349 /* find start area */
350 for (area1=0; area1 < NB_DATAFLASH_AREA; area1++) {
351 if (start_addr == dataflash_info[i].Device.area_list[area1].start)
354 if (area1 == NB_DATAFLASH_AREA) return -1;
356 for (area2=0; area2 < NB_DATAFLASH_AREA; area2++) {
357 if (end_addr == dataflash_info[i].Device.area_list[area2].end)
360 if (area2 == NB_DATAFLASH_AREA)
363 /*set protection value*/
364 for(j = area1; j < area2+1 ; j++)
365 if(dataflash_info[i].Device.area_list[j].protected
366 != FLAG_PROTECT_INVALID) {
368 dataflash_info[i].Device.area_list[j].protected
369 = FLAG_PROTECT_CLEAR;
371 dataflash_info[i].Device.area_list[j].protected
376 return (area2-area1+1);
379 /*---------------------------------------------------------------------------*/
380 /* Function Name : read_dataflash */
381 /* Object : dataflash memory read */
382 /*---------------------------------------------------------------------------*/
383 int read_dataflash (unsigned long addr, unsigned long size, char *result)
385 unsigned long AddrToRead = addr;
386 AT91PS_DataFlash pFlash = &DataFlashInst;
388 pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
391 return ERR_UNKNOWN_FLASH_TYPE;
393 if (size_dataflash(pFlash,addr,size) == 0)
396 return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
399 /*---------------------------------------------------------------------------*/
400 /* Function Name : write_dataflash */
401 /* Object : write a block in dataflash */
402 /*---------------------------------------------------------------------------*/
403 int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
406 unsigned long AddrToWrite = addr_dest;
407 AT91PS_DataFlash pFlash = &DataFlashInst;
409 pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
412 return ERR_UNKNOWN_FLASH_TYPE;
414 if (size_dataflash(pFlash,addr_dest,size) == 0)
417 if (prot_dataflash(pFlash,addr_dest) == 0)
418 return ERR_PROTECTED;
420 if (AddrToWrite == -1)
423 return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src,
427 void dataflash_perror (int err)
433 printf("Timeout writing to DataFlash\n");
436 printf("Can't write to protected/invalid DataFlash sectors\n");
439 printf("Outside available DataFlash\n");
441 case ERR_UNKNOWN_FLASH_TYPE:
442 printf("Unknown Type of DataFlash\n");
445 printf("General DataFlash Programming Error\n");
448 printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);