summaryrefslogtreecommitdiffstats
path: root/drivers/dataflash.c
blob: 91903c8c8f739abd7c2310d3220483af6982f42f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
/* LowLevel function for ATMEL DataFlash support
 * Author : Hamid Ikdoumi (Atmel)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */
#include <common.h>
#include <config.h>
#ifdef CONFIG_HAS_DATAFLASH
#include <asm/hardware.h>
#include <dataflash.h>

AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
static AT91S_DataFlash DataFlashInst;

#ifdef CONFIG_AT91SAM9260EK
int cs[][CFG_MAX_DATAFLASH_BANKS] = {
	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},	/* Logical adress, CS */
	{CFG_DATAFLASH_LOGIC_ADDR_CS1, 1}
};
#elif defined(CONFIG_AT91SAM9263EK)
int cs[][CFG_MAX_DATAFLASH_BANKS] = {
	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}	/* Logical adress, CS */
};
#else
int cs[][CFG_MAX_DATAFLASH_BANKS] = {
	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},	/* Logical adress, CS */
	{CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
};
#endif

/*define the area offsets*/
#if defined(CONFIG_AT91SAM9261EK) || defined(CONFIG_AT91SAM9260EK) || defined(CONFIG_AT91SAM9263EK)
#if	defined(CONFIG_NEW_PARTITION)
dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
	{0x00000000,	0x00003FFF, 	FLAG_PROTECT_SET,	0,    		"Bootstrap"},  	/* ROM code */
	{0x00004200,	0x000083FF, 	FLAG_PROTECT_CLEAR,	0,    		"Environment"},	/* u-boot environment */
	{0x00008400,	0x0003DDFF,	FLAG_PROTECT_SET,	0,    		"U-Boot"},     	/* u-boot code */
	{0x0003DE00,	0x00041FFF,	FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"MON"},	       	/* Room for alternative boot monitor */
	{0x00042000,	0x0018BFFF,	FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"OS"},	       	/* data area size to tune */
	{0x0018C000,	0xFFFFFFFF,	FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"FS"},	       	/* data area size to tune */
};
#else
dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
	{0, 0x3fff, FLAG_PROTECT_SET},			/* ROM code */
	{0x4000, 0x7fff, FLAG_PROTECT_CLEAR},		/* u-boot environment */
	{0x8000, 0x37fff, FLAG_PROTECT_SET},		/* u-boot code */
	{0x38000, 0x1fffff, FLAG_PROTECT_CLEAR},	/* data area size to tune */
};
#endif
#elif defined(CONFIG_NEW_PARTITION)
/*define the area offsets*/
/* Invalid partitions should be defined with start > end */
dataflash_protect_t area_list[NB_DATAFLASH_AREA*CFG_MAX_DATAFLASH_BANKS] = {
	{0x00000000, 0x000083ff, FLAG_PROTECT_SET,	0,		"Bootstrap"},	/* ROM code */
	{0x00008400, 0x00020fff, FLAG_PROTECT_SET,	0,		"U-Boot"},	/* u-boot code */
	{0x00021000, 0x000293ff, FLAG_PROTECT_CLEAR,	0,		"Environment"},	/* u-boot environment 8Kb */
	{0x00029400, 0x00041fff, FLAG_PROTECT_INVALID,	0,		"<Unused>"},	/* Rest of Sector 1 */
	{0x00042000, 0x0018Bfff, FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"OS"},	/* data area size to tune */
	{0x0018C000, 0xffffffff, FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"FS"},	/* data area size to tune */

	{0x00000000, 0xffffffff, FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"Data"},	/* data area */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
};
#else
dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
	{0, 0x7fff, FLAG_PROTECT_SET},			/* ROM code */
	{0x8000, 0x1ffff, FLAG_PROTECT_SET},		/* u-boot code */
	{0x20000, 0x27fff, FLAG_PROTECT_CLEAR},		/* u-boot environment */
	{0x28000, 0x1fffff, FLAG_PROTECT_CLEAR},	/* data area size to tune */
};
#endif

extern void AT91F_SpiInit (void);
extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
				unsigned long addr,
				unsigned long size, char *buffer);
extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
				unsigned char *src,
				int dest,
				int size );

int AT91F_DataflashInit (void)
{
	int i, j;
	int dfcode;
	int part = 0;
	int last_part;
	int found[CFG_MAX_DATAFLASH_BANKS];
	unsigned char protected;

	AT91F_SpiInit ();

	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		found[i] = 0;
		dataflash_info[i].Desc.state = IDLE;
		dataflash_info[i].id = 0;
		dataflash_info[i].Device.pages_number = 0;
		dfcode = AT91F_DataflashProbe (cs[i][1],
				&dataflash_info[i].Desc);

		switch (dfcode) {
		case AT45DB161:
			dataflash_info[i].Device.pages_number = 4096;
			dataflash_info[i].Device.pages_size = 528;
			dataflash_info[i].Device.page_offset = 10;
			dataflash_info[i].Device.byte_mask = 0x300;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		case AT45DB321:
			dataflash_info[i].Device.pages_number = 8192;
			dataflash_info[i].Device.pages_size = 528;
			dataflash_info[i].Device.page_offset = 10;
			dataflash_info[i].Device.byte_mask = 0x300;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		case AT45DB642:
			dataflash_info[i].Device.pages_number = 8192;
			dataflash_info[i].Device.pages_size = 1056;
			dataflash_info[i].Device.page_offset = 11;
			dataflash_info[i].Device.byte_mask = 0x700;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		case AT45DB128:
			dataflash_info[i].Device.pages_number = 16384;
			dataflash_info[i].Device.pages_size = 1056;
			dataflash_info[i].Device.page_offset = 11;
			dataflash_info[i].Device.byte_mask = 0x700;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		default:
			dfcode = 0;
			break;
		}
		/* set the last area end to the dataflash size*/
		area_list[NB_DATAFLASH_AREA -1].end =
				(dataflash_info[i].Device.pages_number *
				dataflash_info[i].Device.pages_size)-1;

		last_part=0;
		/* set the area addresses */
		for(j = 0; j<NB_DATAFLASH_AREA; j++) {
			if(found[i]!=0) {
				dataflash_info[i].Device.area_list[j].start =
					area_list[part].start +
					dataflash_info[i].logical_address;
				if(area_list[part].end == 0xffffffff) {
					dataflash_info[i].Device.area_list[j].end =
						dataflash_info[i].end_address +
						dataflash_info	[i].logical_address;
					last_part = 1;
				} else {
					dataflash_info[i].Device.area_list[j].end =
						area_list[part].end +
						dataflash_info[i].logical_address;
				}
				protected = area_list[part].protected;
				/* Set the environment according to the label...*/
				if(protected == FLAG_PROTECT_INVALID) {
					dataflash_info[i].Device.area_list[j].protected =
						FLAG_PROTECT_INVALID;
				} else {
					dataflash_info[i].Device.area_list[j].protected =
						protected;
				}
				strcpy((char*)(dataflash_info[i].Device.area_list[j].label),
						(const char *)area_list[part].label);
			}
			part++;
		}
	}
	return found[0];
}

#ifdef	CONFIG_NEW_DF_PARTITION
int AT91F_DataflashSetEnv (void)
{
	int i, j;
	int part;
	unsigned char env;
	unsigned char s[32];	/* Will fit a long int in hex */
	unsigned long start;
	for (i = 0, part= 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		for(j = 0; j<NB_DATAFLASH_AREA; j++) {
			env = area_list[part].setenv;
			/* Set the environment according to the label...*/
			if((env & FLAG_SETENV) == FLAG_SETENV) {
				start =
				dataflash_info[i].Device.area_list[j].start;
				sprintf(s,"%X",start);
				setenv(area_list[part].label,s);
			}
			part++;
		}
	}
}
#endif

void dataflash_print_info (void)
{
	int i, j;

	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		if (dataflash_info[i].id != 0) {
			printf("DataFlash:");
			switch (dataflash_info[i].id) {
			case AT45DB161:
				printf("AT45DB161\n");
				break;

			case AT45DB321:
				printf("AT45DB321\n");
				break;

			case AT45DB642:
				printf("AT45DB642\n");
				break;
			case AT45DB128:
				printf("AT45DB128\n");
				break;
			}

			printf("Nb pages: %6d\n"
				"Page Size: %6d\n"
				"Size=%8d bytes\n"
				"Logical address: 0x%08X\n",
				(unsigned int) dataflash_info[i].Device.pages_number,
				(unsigned int) dataflash_info[i].Device.pages_size,
				(unsigned int) dataflash_info[i].Device.pages_number *
				dataflash_info[i].Device.pages_size,
				(unsigned int) dataflash_info[i].logical_address);
			for (j=0; j< NB_DATAFLASH_AREA; j++) {
				switch(dataflash_info[i].Device.area_list[j].protected) {
				case	FLAG_PROTECT_SET:
				case	FLAG_PROTECT_CLEAR:
					printf("Area %i:\t%08lX to %08lX %s", j,
						dataflash_info[i].Device.area_list[j].start,
						dataflash_info[i].Device.area_list[j].end,
						(dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : "    ");
#ifdef	CONFIG_NEW_DF_PARTITION
						printf(" %s\n",	dataflash_info[i].Device.area_list[j].label);
#else
						printf("\n");
#endif
					break;
#ifdef	CONFIG_NEW_DF_PARTITION
				case	FLAG_PROTECT_INVALID:
					break;
#endif
				}
			}
		}
	}
}


/*---------------------------------------------------------------------------*/
/* Function Name       : AT91F_DataflashSelect 				     */
/* Object              : Select the correct device			     */
/*---------------------------------------------------------------------------*/
AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
				unsigned long *addr)
{
	char addr_valid = 0;
	int i;

	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
		if ( dataflash_info[i].id
			&& ((((int) addr) & 0xFF000000) ==
			dataflash_info[i].logical_address)) {
			addr_valid = 1;
			break;
		}
	if (!addr_valid) {
		pFlash = (AT91PS_DataFlash) 0;
		return pFlash;
	}
	pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
	pFlash->pDevice = &(dataflash_info[i].Device);
	*addr -= dataflash_info[i].logical_address;
	return (pFlash);
}

/*---------------------------------------------------------------------------*/
/* Function Name       : addr_dataflash 		    		     */
/* Object              : Test if address is valid			     */
/*---------------------------------------------------------------------------*/
int addr_dataflash (unsigned long addr)
{
	int addr_valid = 0;
	int i;

	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		if ((((int) addr) & 0xFF000000) ==
			dataflash_info[i].logical_address) {
			addr_valid = 1;
			break;
		}
	}

	return addr_valid;
}
/*---------------------------------------------------------------------------*/
/* Function Name       : size_dataflash 				     */
/* Object              : Test if address is valid regarding the size	     */
/*---------------------------------------------------------------------------*/
int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr,
			unsigned long size)
{
	/* is outside the dataflash */
	if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
		pdataFlash->pDevice->pages_number)) return 0;
	/* is too large for the dataflash */
	if (size > ((pdataFlash->pDevice->pages_size *
		pdataFlash->pDevice->pages_number) -
		((int)addr & 0x0FFFFFFF))) return 0;

	return 1;
}
/*---------------------------------------------------------------------------*/
/* Function Name       : prot_dataflash 				     */
/* Object              : Test if destination area is protected		     */
/*---------------------------------------------------------------------------*/
int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
{
int area;
	/* find area */
	for (area=0; area < NB_DATAFLASH_AREA; area++) {
		if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
			(addr < pdataFlash->pDevice->area_list[area].end))
			break;
	}
	if (area == NB_DATAFLASH_AREA)
		return -1;

	/*test protection value*/
	if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET)
		return 0;
	if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID)
		return 0;

	return 1;
}
/*--------------------------------------------------------------------------*/
/* Function Name       : dataflash_real_protect				    */
/* Object              : protect/unprotect area				    */
/*--------------------------------------------------------------------------*/
int dataflash_real_protect (int flag, unsigned long start_addr,
				unsigned long end_addr)
{
int i,j, area1, area2, addr_valid = 0;
	/* find dataflash */
	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		if ((((int) start_addr) & 0xF0000000) ==
			dataflash_info[i].logical_address) {
				addr_valid = 1;
				break;
		}
	}
	if (!addr_valid) {
		return -1;
	}
	/* find start area */
	for (area1=0; area1 < NB_DATAFLASH_AREA; area1++) {
		if (start_addr == dataflash_info[i].Device.area_list[area1].start)
			break;
	}
	if (area1 == NB_DATAFLASH_AREA) return -1;
	/* find end area */
	for (area2=0; area2 < NB_DATAFLASH_AREA; area2++) {
		if (end_addr == dataflash_info[i].Device.area_list[area2].end)
			break;
	}
	if (area2 == NB_DATAFLASH_AREA)
		return -1;

	/*set protection value*/
	for(j = area1; j < area2+1 ; j++)
		if(dataflash_info[i].Device.area_list[j].protected
				!= FLAG_PROTECT_INVALID) {
			if (flag == 0) {
				dataflash_info[i].Device.area_list[j].protected
					= FLAG_PROTECT_CLEAR;
			} else {
				dataflash_info[i].Device.area_list[j].protected
					= FLAG_PROTECT_SET;
			}
		}

	return (area2-area1+1);
}

/*---------------------------------------------------------------------------*/
/* Function Name       : read_dataflash 				     */
/* Object              : dataflash memory read				     */
/*---------------------------------------------------------------------------*/
int read_dataflash (unsigned long addr, unsigned long size, char *result)
{
	unsigned long AddrToRead = addr;
	AT91PS_DataFlash pFlash = &DataFlashInst;

	pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);

	if (pFlash == 0)
		return ERR_UNKNOWN_FLASH_TYPE;

	if (size_dataflash(pFlash,addr,size) == 0)
		return ERR_INVAL;

	return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
}


/*---------------------------------------------------------------------------*/
/* Function Name       : write_dataflash 				     */
/* Object              : write a block in dataflash			     */
/*---------------------------------------------------------------------------*/
int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
			unsigned long size)
{
	unsigned long AddrToWrite = addr_dest;
	AT91PS_DataFlash pFlash = &DataFlashInst;

	pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);

	if (pFlash == 0)
		return ERR_UNKNOWN_FLASH_TYPE;

	if (size_dataflash(pFlash,addr_dest,size) == 0)
		return ERR_INVAL;

	if (prot_dataflash(pFlash,addr_dest) == 0)
		return ERR_PROTECTED;

	if (AddrToWrite == -1)
		return -1;

	return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src,
						AddrToWrite, size);
}


void dataflash_perror (int err)
{
	switch (err) {
	case ERR_OK:
		break;
	case ERR_TIMOUT:
		printf("Timeout writing to DataFlash\n");
		break;
	case ERR_PROTECTED:
		printf("Can't write to protected/invalid DataFlash sectors\n");
		break;
	case ERR_INVAL:
		printf("Outside available DataFlash\n");
		break;
	case ERR_UNKNOWN_FLASH_TYPE:
		printf("Unknown Type of DataFlash\n");
		break;
	case ERR_PROG_ERROR:
		printf("General DataFlash Programming Error\n");
		break;
	default:
		printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
		break;
	}
}

#endif