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wdenk2abbe072003-06-16 23:50:08 +00001/* 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#ifdef CONFIG_HAS_DATAFLASH
23#include <asm/hardware.h>
24#include <dataflash.h>
25
26AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
27static AT91S_DataFlash DataFlashInst;
28
29int cs[][CFG_MAX_DATAFLASH_BANKS] = {
30 {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
31 {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
32};
33
wdenk5779d8d2003-12-06 23:55:10 +000034/*define the area offsets*/
35dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
36 {0, 0x7fff, FLAG_PROTECT_SET}, /* ROM code */
37 {0x8000, 0x1ffff, FLAG_PROTECT_SET}, /* u-boot code */
38 {0x20000, 0x27fff, FLAG_PROTECT_CLEAR}, /* u-boot environment */
39 {0x28000, 0x1fffff, FLAG_PROTECT_CLEAR}, /* data area size to tune */
40};
41
wdenk2abbe072003-06-16 23:50:08 +000042extern void AT91F_SpiInit (void);
43extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
44extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
45 unsigned long addr,
46 unsigned long size, char *buffer);
wdenk5779d8d2003-12-06 23:55:10 +000047extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
48 unsigned char *src,
49 int dest,
50 int size );
wdenk2abbe072003-06-16 23:50:08 +000051
52int AT91F_DataflashInit (void)
53{
54 int i, j;
55 int dfcode;
56
57 AT91F_SpiInit ();
58
59 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
wdenk5779d8d2003-12-06 23:55:10 +000060 dataflash_info[i].Desc.state = IDLE;
wdenk2abbe072003-06-16 23:50:08 +000061 dataflash_info[i].id = 0;
62 dataflash_info[i].Device.pages_number = 0;
63 dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
64
65 switch (dfcode) {
66 case AT45DB161:
67 dataflash_info[i].Device.pages_number = 4096;
68 dataflash_info[i].Device.pages_size = 528;
69 dataflash_info[i].Device.page_offset = 10;
70 dataflash_info[i].Device.byte_mask = 0x300;
71 dataflash_info[i].Device.cs = cs[i][1];
72 dataflash_info[i].Desc.DataFlash_state = IDLE;
73 dataflash_info[i].logical_address = cs[i][0];
74 dataflash_info[i].id = dfcode;
75 break;
76
77 case AT45DB321:
78 dataflash_info[i].Device.pages_number = 8192;
79 dataflash_info[i].Device.pages_size = 528;
80 dataflash_info[i].Device.page_offset = 10;
81 dataflash_info[i].Device.byte_mask = 0x300;
82 dataflash_info[i].Device.cs = cs[i][1];
83 dataflash_info[i].Desc.DataFlash_state = IDLE;
84 dataflash_info[i].logical_address = cs[i][0];
85 dataflash_info[i].id = dfcode;
86 break;
87
88 case AT45DB642:
89 dataflash_info[i].Device.pages_number = 8192;
90 dataflash_info[i].Device.pages_size = 1056;
91 dataflash_info[i].Device.page_offset = 11;
92 dataflash_info[i].Device.byte_mask = 0x700;
93 dataflash_info[i].Device.cs = cs[i][1];
94 dataflash_info[i].Desc.DataFlash_state = IDLE;
95 dataflash_info[i].logical_address = cs[i][0];
96 dataflash_info[i].id = dfcode;
97 break;
wdenk5779d8d2003-12-06 23:55:10 +000098 case AT45DB128:
99 dataflash_info[i].Device.pages_number = 16384;
100 dataflash_info[i].Device.pages_size = 1056;
101 dataflash_info[i].Device.page_offset = 11;
102 dataflash_info[i].Device.byte_mask = 0x700;
103 dataflash_info[i].Device.cs = cs[i][1];
104 dataflash_info[i].Desc.DataFlash_state = IDLE;
105 dataflash_info[i].logical_address = cs[i][0];
106 dataflash_info[i].id = dfcode;
107 break;
wdenk2abbe072003-06-16 23:50:08 +0000108
109 default:
110 break;
111 }
wdenk5779d8d2003-12-06 23:55:10 +0000112 /* set the last area end to the dataflash size*/
113 area_list[NB_DATAFLASH_AREA -1].end =
114 (dataflash_info[i].Device.pages_number *
115 dataflash_info[i].Device.pages_size)-1;
wdenk2abbe072003-06-16 23:50:08 +0000116
wdenk5779d8d2003-12-06 23:55:10 +0000117 /* set the area addresses */
118 for(j = 0; j<NB_DATAFLASH_AREA; j++) {
119 dataflash_info[i].Device.area_list[j].start = area_list[j].start + dataflash_info[i].logical_address;
120 dataflash_info[i].Device.area_list[j].end = area_list[j].end + dataflash_info[i].logical_address;
121 dataflash_info[i].Device.area_list[j].protected = area_list[j].protected;
122 }
wdenk2abbe072003-06-16 23:50:08 +0000123 }
124 return (1);
125}
126
127
wdenk2abbe072003-06-16 23:50:08 +0000128void dataflash_print_info (void)
129{
wdenk5779d8d2003-12-06 23:55:10 +0000130 int i, j;
wdenk2abbe072003-06-16 23:50:08 +0000131
132 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
133 if (dataflash_info[i].id != 0) {
134 printf ("DataFlash:");
135 switch (dataflash_info[i].id) {
136 case AT45DB161:
137 printf ("AT45DB161\n");
138 break;
139
140 case AT45DB321:
141 printf ("AT45DB321\n");
142 break;
143
144 case AT45DB642:
145 printf ("AT45DB642\n");
146 break;
wdenk5779d8d2003-12-06 23:55:10 +0000147 case AT45DB128:
148 printf ("AT45DB128\n");
149 break;
wdenk2abbe072003-06-16 23:50:08 +0000150 }
151
152 printf ("Nb pages: %6d\n"
153 "Page Size: %6d\n"
154 "Size=%8d bytes\n"
155 "Logical address: 0x%08X\n",
156 (unsigned int) dataflash_info[i].Device.pages_number,
157 (unsigned int) dataflash_info[i].Device.pages_size,
158 (unsigned int) dataflash_info[i].Device.pages_number *
159 dataflash_info[i].Device.pages_size,
160 (unsigned int) dataflash_info[i].logical_address);
wdenk5779d8d2003-12-06 23:55:10 +0000161 for (j=0; j< NB_DATAFLASH_AREA; j++) {
wdenkc935d3b2004-01-03 19:43:48 +0000162 printf ("Area %i:\t%08lX to %08lX %s\n", j,
wdenk5779d8d2003-12-06 23:55:10 +0000163 dataflash_info[i].Device.area_list[j].start,
164 dataflash_info[i].Device.area_list[j].end,
165 (dataflash_info[i].Device.area_list[j].protected ==
166 FLAG_PROTECT_SET) ? "(RO)" : "");
167 }
wdenk2abbe072003-06-16 23:50:08 +0000168 }
169 }
170}
171
172
173/*------------------------------------------------------------------------------*/
174/* Function Name : AT91F_DataflashSelect */
175/* Object : Select the correct device */
176/*------------------------------------------------------------------------------*/
Wolfgang Denkd52fb7e2006-03-11 22:53:33 +0100177AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash, unsigned long *addr)
wdenk2abbe072003-06-16 23:50:08 +0000178{
179 char addr_valid = 0;
180 int i;
181
182 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
183 if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
184 addr_valid = 1;
185 break;
186 }
187 if (!addr_valid) {
188 pFlash = (AT91PS_DataFlash) 0;
189 return pFlash;
190 }
191 pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
192 pFlash->pDevice = &(dataflash_info[i].Device);
193 *addr -= dataflash_info[i].logical_address;
194 return (pFlash);
195}
196
197/*------------------------------------------------------------------------------*/
198/* Function Name : addr_dataflash */
199/* Object : Test if address is valid */
200/*------------------------------------------------------------------------------*/
201int addr_dataflash (unsigned long addr)
202{
203 int addr_valid = 0;
204 int i;
205
206 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
207 if ((((int) addr) & 0xFF000000) ==
208 dataflash_info[i].logical_address) {
209 addr_valid = 1;
210 break;
211 }
212 }
213
214 return addr_valid;
215}
wdenk5779d8d2003-12-06 23:55:10 +0000216/*-----------------------------------------------------------------------------*/
217/* Function Name : size_dataflash */
218/* Object : Test if address is valid regarding the size */
219/*-----------------------------------------------------------------------------*/
220int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr, unsigned long size)
221{
222 /* is outside the dataflash */
223 if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
224 pdataFlash->pDevice->pages_number)) return 0;
225 /* is too large for the dataflash */
226 if (size > ((pdataFlash->pDevice->pages_size *
227 pdataFlash->pDevice->pages_number) - ((int)addr & 0x0FFFFFFF))) return 0;
228
229 return 1;
230}
231/*-----------------------------------------------------------------------------*/
232/* Function Name : prot_dataflash */
233/* Object : Test if destination area is protected */
234/*-----------------------------------------------------------------------------*/
235int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
236{
237int area;
238 /* find area */
239 for (area=0; area < NB_DATAFLASH_AREA; area++) {
240 if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
241 (addr < pdataFlash->pDevice->area_list[area].end))
242 break;
243 }
244 if (area == NB_DATAFLASH_AREA) return -1;
245 /*test protection value*/
246 if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET) return 0;
247
248 return 1;
249}
250/*-----------------------------------------------------------------------------*/
251/* Function Name : dataflash_real_protect */
252/* Object : protect/unprotect area */
253/*-----------------------------------------------------------------------------*/
254int dataflash_real_protect (int flag, unsigned long start_addr, unsigned long end_addr)
255{
256int i,j, area1, area2, addr_valid = 0;
257 /* find dataflash */
258 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
259 if ((((int) start_addr) & 0xF0000000) ==
260 dataflash_info[i].logical_address) {
261 addr_valid = 1;
262 break;
263 }
264 }
265 if (!addr_valid) {
266 return -1;
267 }
268 /* find start area */
269 for (area1=0; area1 < NB_DATAFLASH_AREA; area1++) {
270 if (start_addr == dataflash_info[i].Device.area_list[area1].start) break;
271 }
272 if (area1 == NB_DATAFLASH_AREA) return -1;
273 /* find end area */
274 for (area2=0; area2 < NB_DATAFLASH_AREA; area2++) {
275 if (end_addr == dataflash_info[i].Device.area_list[area2].end) break;
276 }
277 if (area2 == NB_DATAFLASH_AREA) return -1;
278
279 /*set protection value*/
280 for(j = area1; j < area2+1 ; j++)
281 if (flag == 0) dataflash_info[i].Device.area_list[j].protected = FLAG_PROTECT_CLEAR;
282 else dataflash_info[i].Device.area_list[j].protected = FLAG_PROTECT_SET;
283
284 return (area2-area1+1);
285}
wdenk2abbe072003-06-16 23:50:08 +0000286
287/*------------------------------------------------------------------------------*/
288/* Function Name : read_dataflash */
289/* Object : dataflash memory read */
290/*------------------------------------------------------------------------------*/
291int read_dataflash (unsigned long addr, unsigned long size, char *result)
292{
Wolfgang Denkd52fb7e2006-03-11 22:53:33 +0100293 unsigned long AddrToRead = addr;
wdenk2abbe072003-06-16 23:50:08 +0000294 AT91PS_DataFlash pFlash = &DataFlashInst;
295
296 pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
wdenk5779d8d2003-12-06 23:55:10 +0000297
wdenk2abbe072003-06-16 23:50:08 +0000298 if (pFlash == 0)
wdenk5779d8d2003-12-06 23:55:10 +0000299 return ERR_UNKNOWN_FLASH_TYPE;
300
301 if (size_dataflash(pFlash,addr,size) == 0)
302 return ERR_INVAL;
wdenk2abbe072003-06-16 23:50:08 +0000303
304 return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
305}
306
307
308/*-----------------------------------------------------------------------------*/
309/* Function Name : write_dataflash */
310/* Object : write a block in dataflash */
311/*-----------------------------------------------------------------------------*/
312int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
313 unsigned long size)
314{
Wolfgang Denkd52fb7e2006-03-11 22:53:33 +0100315 unsigned long AddrToWrite = addr_dest;
wdenk2abbe072003-06-16 23:50:08 +0000316 AT91PS_DataFlash pFlash = &DataFlashInst;
317
318 pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
wdenk5779d8d2003-12-06 23:55:10 +0000319
320 if (pFlash == 0)
321 return ERR_UNKNOWN_FLASH_TYPE;
322
323 if (size_dataflash(pFlash,addr_dest,size) == 0)
324 return ERR_INVAL;
325
326 if (prot_dataflash(pFlash,addr_dest) == 0)
327 return ERR_PROTECTED;
328
wdenk2abbe072003-06-16 23:50:08 +0000329 if (AddrToWrite == -1)
330 return -1;
331
Wolfgang Denkd52fb7e2006-03-11 22:53:33 +0100332 return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src, AddrToWrite, size);
wdenk2abbe072003-06-16 23:50:08 +0000333}
334
335
336void dataflash_perror (int err)
337{
338 switch (err) {
339 case ERR_OK:
340 break;
341 case ERR_TIMOUT:
342 printf ("Timeout writing to DataFlash\n");
343 break;
344 case ERR_PROTECTED:
345 printf ("Can't write to protected DataFlash sectors\n");
346 break;
347 case ERR_INVAL:
348 printf ("Outside available DataFlash\n");
349 break;
350 case ERR_UNKNOWN_FLASH_TYPE:
351 printf ("Unknown Type of DataFlash\n");
352 break;
353 case ERR_PROG_ERROR:
354 printf ("General DataFlash Programming Error\n");
355 break;
356 default:
357 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
358 break;
359 }
360}
361
362#endif