summaryrefslogtreecommitdiff
path: root/board/bf533-ezkit/flash.c
blob: 1b56d5bc6a6886b2e09401a5b30374a2cbd37025 (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
/*
 * U-boot - flash.c Flash driver for PSD4256GV
 *
 * Copyright (c) 2005 blackfin.uclinux.org
 * This file is based on BF533EzFlash.c originally written by Analog Devices, Inc.
 *
 * (C) Copyright 2000-2004
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 "flash-defines.h"

void flash_reset(void)
{
	reset_flash();
}

unsigned long flash_get_size(ulong baseaddr, flash_info_t * info, int bank_flag)
{
	int id = 0, i = 0;
	static int FlagDev = 1;

	id = get_codes();
	if (FlagDev) {
#ifdef DEBUG
		printf("Device ID of the Flash is %x\n", id);
#endif
		FlagDev = 0;
	}
	info->flash_id = id;

	switch (bank_flag) {
	case 0:
		for (i = PriFlashABegin; i < SecFlashABegin; i++)
			info->start[i] = (baseaddr + (i * AFP_SectorSize1));
		info->size = 0x200000;
		info->sector_count = 32;
		break;
	case 1:
		info->start[0] = baseaddr + SecFlashASec1Off;
		info->start[1] = baseaddr + SecFlashASec2Off;
		info->start[2] = baseaddr + SecFlashASec3Off;
		info->start[3] = baseaddr + SecFlashASec4Off;
		info->size = 0x10000;
		info->sector_count = 4;
		break;
	case 2:
		info->start[0] = baseaddr + SecFlashBSec1Off;
		info->start[1] = baseaddr + SecFlashBSec2Off;
		info->start[2] = baseaddr + SecFlashBSec3Off;
		info->start[3] = baseaddr + SecFlashBSec4Off;
		info->size = 0x10000;
		info->sector_count = 4;
		break;
	}
	return (info->size);
}

unsigned long flash_init(void)
{
	unsigned long size_b0, size_b1, size_b2;
	int i;

	size_b0 = size_b1 = size_b2 = 0;
#ifdef DEBUG
	printf("Flash Memory Start 0x%x\n", CFG_FLASH_BASE);
	printf("Memory Map for the Flash\n");
	printf("0x20000000 - 0x200FFFFF Flash A Primary (1MB)\n");
	printf("0x20100000 - 0x201FFFFF Flash B Primary (1MB)\n");
	printf("0x20200000 - 0x2020FFFF Flash A Secondary (64KB)\n");
	printf("0x20280000 - 0x2028FFFF Flash B Secondary (64KB)\n");
	printf("Please type command flinfo for information on Sectors \n");
#endif
	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
		flash_info[i].flash_id = FLASH_UNKNOWN;
	}

	size_b0 = flash_get_size(CFG_FLASH0_BASE, &flash_info[0], 0);
	size_b1 = flash_get_size(CFG_FLASH0_BASE, &flash_info[1], 1);
	size_b2 = flash_get_size(CFG_FLASH0_BASE, &flash_info[2], 2);

	if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
		printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
		       size_b0, size_b0 >> 20);
	}

	(void)flash_protect(FLAG_PROTECT_SET, CFG_FLASH0_BASE,
			    (flash_info[0].start[2] - 1), &flash_info[0]);

	return (size_b0 + size_b1 + size_b2);
}

void flash_print_info(flash_info_t * info)
{
	int i;

	if (info->flash_id == FLASH_UNKNOWN) {
		printf("missing or unknown FLASH type\n");
		return;
	}

	switch (info->flash_id) {
	case FLASH_PSD4256GV:
		printf("ST Microelectronics ");
		break;
	default:
		printf("Unknown Vendor: (0x%08X) ", info->flash_id);
		break;
	}
	for (i = 0; i < info->sector_count; ++i) {
		if ((i % 5) == 0)
			printf("\n   ");
		printf(" %08lX%s",
		       info->start[i], info->protect[i] ? " (RO)" : "     ");
	}
	printf("\n");
	return;
}

int flash_erase(flash_info_t * info, int s_first, int s_last)
{
	int cnt = 0, i;
	int prot, sect;

	prot = 0;
	for (sect = s_first; sect <= s_last; ++sect) {
		if (info->protect[sect])
			prot++;
	}

	if (prot)
		printf("- Warning: %d protected sectors will not be erased!\n",
		       prot);
	else
		printf("\n");

	cnt = s_last - s_first + 1;

	if (cnt == FLASH_TOT_SECT) {
		printf("Erasing flash, Please Wait \n");
		if (erase_flash() < 0) {
			printf("Erasing flash failed \n");
			return FLASH_FAIL;
		}
	} else {
		printf("Erasing Flash locations, Please Wait\n");
		for (i = s_first; i <= s_last; i++) {
			if (info->protect[i] == 0) {	/* not protected */
				if (erase_block_flash(i, info->start[i]) < 0) {
					printf("Error Sector erasing \n");
					return FLASH_FAIL;
				}
			}
		}
	}
	return FLASH_SUCCESS;
}

int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
	int ret;

	ret = write_data(addr, cnt, 1, (int *)src);
	if (ret == FLASH_FAIL)
		return ERR_NOT_ERASED;
	return FLASH_SUCCESS;
}

int write_data(long lStart, long lCount, long lStride, int *pnData)
{
	long i = 0;
	int j = 0;
	unsigned long ulOffset = lStart - CFG_FLASH_BASE;
	int d;
	int iShift = 0;
	int iNumWords = 2;
	int nLeftover = lCount % 4;
	int nSector = 0;

	for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) {
		for (iShift = 0, j = 0; (j < iNumWords);
		     j++, ulOffset += (lStride * 2)) {
			if ((ulOffset >= INVALIDLOCNSTART)
			    && (ulOffset < INVALIDLOCNEND)) {
				printf
				    ("Invalid locations, Try writing to another location \n");
				return FLASH_FAIL;
			}
			get_sector_number(ulOffset, &nSector);
			read_flash(ulOffset, &d);
			if (d != 0xffff) {
				printf
				    ("Flash not erased at offset 0x%x Please erase to reprogram \n",
				     ulOffset);
				return FLASH_FAIL;
			}
			unlock_flash(ulOffset);
			if (write_flash(ulOffset, (pnData[i] >> iShift)) < 0) {
				printf("Error programming the flash \n");
				return FLASH_FAIL;
			}
			iShift += 16;
		}
	}
	if (nLeftover > 0) {
		if ((ulOffset >= INVALIDLOCNSTART)
		    && (ulOffset < INVALIDLOCNEND))
			return FLASH_FAIL;
		get_sector_number(ulOffset, &nSector);
		read_flash(ulOffset, &d);
		if (d != 0xffff) {
			printf
			    ("Flash already programmed. Please erase to reprogram \n");
			printf("uloffset = 0x%x \t d = 0x%x\n", ulOffset, d);
			return FLASH_FAIL;
		}
		unlock_flash(ulOffset);
		if (write_flash(ulOffset, pnData[i]) < 0) {
			printf("Error programming the flash \n");
			return FLASH_FAIL;
		}
	}
	return FLASH_SUCCESS;
}

int read_data(long ulStart, long lCount, long lStride, int *pnData)
{
	long i = 0;
	int j = 0;
	long ulOffset = ulStart;
	int iShift = 0;
	int iNumWords = 2;
	int nLeftover = lCount % 4;
	int nHi, nLow;
	int nSector = 0;

	for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) {
		for (iShift = 0, j = 0; j < iNumWords; j += 2) {
			if ((ulOffset >= INVALIDLOCNSTART)
			    && (ulOffset < INVALIDLOCNEND))
				return FLASH_FAIL;

			get_sector_number(ulOffset, &nSector);
			read_flash(ulOffset, &nLow);
			ulOffset += (lStride * 2);
			read_flash(ulOffset, &nHi);
			ulOffset += (lStride * 2);
			pnData[i] = (nHi << 16) | nLow;
		}
	}
	if (nLeftover > 0) {
		if ((ulOffset >= INVALIDLOCNSTART)
		    && (ulOffset < INVALIDLOCNEND))
			return FLASH_FAIL;

		get_sector_number(ulOffset, &nSector);
		read_flash(ulOffset, &pnData[i]);
	}
	return FLASH_SUCCESS;
}

int write_flash(long nOffset, int nValue)
{
	long addr;

	addr = (CFG_FLASH_BASE + nOffset);
	__builtin_bfin_ssync();
	*(unsigned volatile short *)addr = nValue;
	__builtin_bfin_ssync();
	if (poll_toggle_bit(nOffset) < 0)
		return FLASH_FAIL;
	return FLASH_SUCCESS;
}

int read_flash(long nOffset, int *pnValue)
{
	int nValue = 0x0;
	long addr = (CFG_FLASH_BASE + nOffset);

	if (nOffset != 0x2)
		reset_flash();
	__builtin_bfin_ssync();
	nValue = *(volatile unsigned short *)addr;
	__builtin_bfin_ssync();
	*pnValue = nValue;
	return TRUE;
}

int poll_toggle_bit(long lOffset)
{
	unsigned int u1, u2;
	unsigned long timeout = 0xFFFFFFFF;
	volatile unsigned long *FB =
	    (volatile unsigned long *)(0x20000000 + lOffset);
	while (1) {
		if (timeout < 0)
			break;
		u1 = *(volatile unsigned short *)FB;
		u2 = *(volatile unsigned short *)FB;
		if ((u1 & 0x0040) == (u2 & 0x0040))
			return FLASH_SUCCESS;
		if ((u2 & 0x0020) == 0x0000)
			continue;
		u1 = *(volatile unsigned short *)FB;
		if ((u2 & 0x0040) == (u1 & 0x0040))
			return FLASH_SUCCESS;
		else {
			reset_flash();
			return FLASH_FAIL;
		}
		timeout--;
	}
	printf("Time out occured \n");
	if (timeout < 0)
		return FLASH_FAIL;
}

void reset_flash(void)
{
	write_flash(WRITESEQ1, RESET_VAL);
	/* Wait for 10 micro seconds */
	udelay(10);
}

int erase_flash(void)
{
	write_flash(WRITESEQ1, WRITEDATA1);
	write_flash(WRITESEQ2, WRITEDATA2);
	write_flash(WRITESEQ3, WRITEDATA3);
	write_flash(WRITESEQ4, WRITEDATA4);
	write_flash(WRITESEQ5, WRITEDATA5);
	write_flash(WRITESEQ6, WRITEDATA6);

	if (poll_toggle_bit(0x0000) < 0)
		return FLASH_FAIL;

	write_flash(SecFlashAOff + WRITESEQ1, WRITEDATA1);
	write_flash(SecFlashAOff + WRITESEQ2, WRITEDATA2);
	write_flash(SecFlashAOff + WRITESEQ3, WRITEDATA3);
	write_flash(SecFlashAOff + WRITESEQ4, WRITEDATA4);
	write_flash(SecFlashAOff + WRITESEQ5, WRITEDATA5);
	write_flash(SecFlashAOff + WRITESEQ6, WRITEDATA6);

	if (poll_toggle_bit(SecFlashASec1Off) < 0)
		return FLASH_FAIL;

	write_flash(PriFlashBOff + WRITESEQ1, WRITEDATA1);
	write_flash(PriFlashBOff + WRITESEQ2, WRITEDATA2);
	write_flash(PriFlashBOff + WRITESEQ3, WRITEDATA3);
	write_flash(PriFlashBOff + WRITESEQ4, WRITEDATA4);
	write_flash(PriFlashBOff + WRITESEQ5, WRITEDATA5);
	write_flash(PriFlashBOff + WRITESEQ6, WRITEDATA6);

	if (poll_toggle_bit(PriFlashBOff) < 0)
		return FLASH_FAIL;

	write_flash(SecFlashBOff + WRITESEQ1, WRITEDATA1);
	write_flash(SecFlashBOff + WRITESEQ2, WRITEDATA2);
	write_flash(SecFlashBOff + WRITESEQ3, WRITEDATA3);
	write_flash(SecFlashBOff + WRITESEQ4, WRITEDATA4);
	write_flash(SecFlashBOff + WRITESEQ5, WRITEDATA5);
	write_flash(SecFlashBOff + WRITESEQ6, WRITEDATA6);

	if (poll_toggle_bit(SecFlashBOff) < 0)
		return FLASH_FAIL;

	return FLASH_SUCCESS;
}

int erase_block_flash(int nBlock, unsigned long address)
{
	long ulSectorOff = 0x0;

	if ((nBlock < 0) || (nBlock > AFP_NumSectors))
		return FALSE;

	ulSectorOff = (address - CFG_FLASH_BASE);

	write_flash((WRITESEQ1 | ulSectorOff), WRITEDATA1);
	write_flash((WRITESEQ2 | ulSectorOff), WRITEDATA2);
	write_flash((WRITESEQ3 | ulSectorOff), WRITEDATA3);
	write_flash((WRITESEQ4 | ulSectorOff), WRITEDATA4);
	write_flash((WRITESEQ5 | ulSectorOff), WRITEDATA5);

	write_flash(ulSectorOff, BlockEraseVal);

	if (poll_toggle_bit(ulSectorOff) < 0)
		return FLASH_FAIL;

	return FLASH_SUCCESS;
}

void unlock_flash(long ulOffset)
{
	unsigned long ulOffsetAddr = ulOffset;
	ulOffsetAddr &= 0xFFFF0000;

	write_flash((WRITESEQ1 | ulOffsetAddr), UNLOCKDATA1);
	write_flash((WRITESEQ2 | ulOffsetAddr), UNLOCKDATA2);
	write_flash((WRITESEQ3 | ulOffsetAddr), UNLOCKDATA3);
}

int get_codes()
{
	int dev_id = 0;

	write_flash(WRITESEQ1, GETCODEDATA1);
	write_flash(WRITESEQ2, GETCODEDATA2);
	write_flash(WRITESEQ3, GETCODEDATA3);

	read_flash(0x0002, &dev_id);
	dev_id &= 0x00FF;

	reset_flash();

	return dev_id;
}

void get_sector_number(long ulOffset, int *pnSector)
{
	int nSector = 0;

	if (ulOffset >= SecFlashAOff) {
		if ((ulOffset < SecFlashASec1Off)
		    && (ulOffset < SecFlashASec2Off)) {
			nSector = SECT32;
		} else if ((ulOffset >= SecFlashASec2Off)
			   && (ulOffset < SecFlashASec3Off)) {
			nSector = SECT33;
		} else if ((ulOffset >= SecFlashASec3Off)
			   && (ulOffset < SecFlashASec4Off)) {
			nSector = SECT34;
		} else if ((ulOffset >= SecFlashASec4Off)
			   && (ulOffset < SecFlashAEndOff)) {
			nSector = SECT35;
		}
	} else if (ulOffset >= SecFlashBOff) {
		if ((ulOffset < SecFlashBSec1Off)
		    && (ulOffset < SecFlashBSec2Off)) {
			nSector = SECT36;
		}
		if ((ulOffset < SecFlashBSec2Off)
		    && (ulOffset < SecFlashBSec3Off)) {
			nSector = SECT37;
		}
		if ((ulOffset < SecFlashBSec3Off)
		    && (ulOffset < SecFlashBSec4Off)) {
			nSector = SECT38;
		}
		if ((ulOffset < SecFlashBSec4Off)
		    && (ulOffset < SecFlashBEndOff)) {
			nSector = SECT39;
		}
	} else if ((ulOffset >= PriFlashAOff) && (ulOffset < SecFlashAOff)) {
		nSector = ulOffset & 0xffff0000;
		nSector = ulOffset >> 16;
		nSector = nSector & 0x000ff;
	}

	if ((nSector >= 0) && (nSector < AFP_NumSectors)) {
		*pnSector = nSector;
	}
}