stellaris.c 27.6 KB
Newer Older
oharboe's avatar
oharboe committed
1
2
/***************************************************************************
 *   Copyright (C) 2006 by Magnus Lundin                                   *
oharboe's avatar
oharboe committed
3
4
 *   lundin@mlu.mine.nu                                                    *
 *                                                                         *
oharboe's avatar
oharboe committed
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 *   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.             *
 ***************************************************************************/

/***************************************************************************
22
* STELLARIS is tested on LM3S811, LM3S6965
oharboe's avatar
oharboe committed
23
***************************************************************************/
oharboe's avatar
oharboe committed
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
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "replacements.h"

#include "stellaris.h"
#include "cortex_m3.h"

#include "flash.h"
#include "target.h"
#include "log.h"
#include "binarybuffer.h"
#include "types.h"

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define DID0_VER(did0) ((did0>>28)&0x07)
int stellaris_register_commands(struct command_context_s *cmd_ctx);
int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
int stellaris_erase(struct flash_bank_s *bank, int first, int last);
int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last);
int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
int stellaris_auto_probe(struct flash_bank_s *bank);
int stellaris_probe(struct flash_bank_s *bank);
int stellaris_protect_check(struct flash_bank_s *bank);
int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size);

int stellaris_read_part_info(struct flash_bank_s *bank);
u32 stellaris_get_flash_status(flash_bank_t *bank);
void stellaris_set_flash_mode(flash_bank_t *bank,int mode);
u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout);

int stellaris_read_part_info(struct flash_bank_s *bank);
60
61
int stellaris_handle_mass_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int stellaris_mass_erase(struct flash_bank_s *bank);
oharboe's avatar
oharboe committed
62
63
64
65
66
67
68
69
70
71
72

flash_driver_t stellaris_flash =
{
	.name = "stellaris",
	.register_commands = stellaris_register_commands,
	.flash_bank_command = stellaris_flash_bank_command,
	.erase = stellaris_erase,
	.protect = stellaris_protect,
	.write = stellaris_write,
	.probe = stellaris_probe,
	.auto_probe = stellaris_auto_probe,
73
	.erase_check = default_flash_mem_blank_check,
oharboe's avatar
oharboe committed
74
75
76
77
78
79
	.protect_check = stellaris_protect_check,
	.info = stellaris_info
};

struct {
	u32 partno;
80
	char *partname;
oharboe's avatar
oharboe committed
81
82
83
84
}	StellarisParts[] =
{
	{0x01,"LM3S101"},
	{0x02,"LM3S102"},
85
86
87
88
89
	{0x03,"LM3S1625"},
	{0x04,"LM3S1626"},
	{0x05,"LM3S1627"},
	{0x06,"LM3S1607"},
	{0x10,"LM3S1776"},
oharboe's avatar
oharboe committed
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
	{0x19,"LM3S300"},
	{0x11,"LM3S301"},
	{0x12,"LM3S310"},
	{0x1A,"LM3S308"},
	{0x13,"LM3S315"},
	{0x14,"LM3S316"},
	{0x17,"LM3S317"},
	{0x18,"LM3S318"},
	{0x15,"LM3S328"},
	{0x2A,"LM3S600"},
	{0x21,"LM3S601"},
	{0x2B,"LM3S608"},
	{0x22,"LM3S610"},
	{0x23,"LM3S611"},
	{0x24,"LM3S612"},
	{0x25,"LM3S613"},
	{0x26,"LM3S615"},
	{0x28,"LM3S617"},
	{0x29,"LM3S618"},
	{0x27,"LM3S628"},
	{0x38,"LM3S800"},
	{0x31,"LM3S801"},
	{0x39,"LM3S808"},
	{0x32,"LM3S811"},
	{0x33,"LM3S812"},
115
	/*{0x33,"LM3S2616"},*/
oharboe's avatar
oharboe committed
116
117
118
119
	{0x34,"LM3S815"},
	{0x36,"LM3S817"},
	{0x37,"LM3S818"},
	{0x35,"LM3S828"},
120
121
122
123
124
125
126
127
128
	{0x39,"LM3S2276"},
	{0x3A,"LM3S2776"},
	{0x43,"LM3S3651"},
	{0x44,"LM3S3739"},
	{0x45,"LM3S3749"},
	{0x46,"LM3S3759"},
	{0x48,"LM3S3768"},
	{0x49,"LM3S3748"},
	{0x50,"LM3S2678"},
oharboe's avatar
oharboe committed
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
	{0x51,"LM3S2110"},
	{0x52,"LM3S2739"},
	{0x53,"LM3S2651"},
	{0x54,"LM3S2939"},
	{0x55,"LM3S2965"},
	{0x56,"LM3S2432"},
	{0x57,"LM3S2620"},
	{0x58,"LM3S2950"},
	{0x59,"LM3S2412"},
	{0x5A,"LM3S2533"},
	{0x61,"LM3S8630"},
	{0x62,"LM3S8970"},
	{0x63,"LM3S8730"},
	{0x64,"LM3S8530"},
	{0x65,"LM3S8930"},
	{0x71,"LM3S6610"},
	{0x72,"LM3S6950"},
	{0x73,"LM3S6965"},
	{0x74,"LM3S6110"},
	{0x75,"LM3S6432"},
	{0x76,"LM3S6537"},
	{0x77,"LM3S6753"},
	{0x78,"LM3S6952"},
152
153
	{0x80,"LM3S2671"},
	{0x81,"LM3S5632"},
oharboe's avatar
oharboe committed
154
155
156
157
158
159
160
	{0x82,"LM3S6422"},
	{0x83,"LM3S6633"},
	{0x84,"LM3S2139"},
	{0x85,"LM3S2637"},
	{0x86,"LM3S8738"},
	{0x88,"LM3S8938"},
	{0x89,"LM3S6938"},
161
	{0x8A,"LM3S5652"},
oharboe's avatar
oharboe committed
162
163
164
165
166
	{0x8B,"LM3S6637"},
	{0x8C,"LM3S8933"},
	{0x8D,"LM3S8733"},
	{0x8E,"LM3S8538"},
	{0x8F,"LM3S2948"},
167
168
169
170
171
172
173
174
175
	{0x91,"LM3S5662"},
	{0x96,"LM3S5732"},
	{0x97,"LM3S5737"},
	{0x99,"LM3S5747"},
	{0x9A,"LM3S5752"},
	{0x9B,"LM3S5757"},
	{0x9C,"LM3S5762"},
	{0x9D,"LM3S5767"},
	{0xA0,"LM3S5739"},
oharboe's avatar
oharboe committed
176
177
178
179
180
181
	{0xA1,"LM3S6100"},
	{0xA2,"LM3S2410"},
	{0xA3,"LM3S6730"},
	{0xA4,"LM3S2730"},
	{0xA5,"LM3S6420"},
	{0xA6,"LM3S8962"},
182
183
184
	{0xA7,"LM3S5749"},
	{0xA8,"LM3S5769"},
	{0xA9,"LM3S5768"},
oharboe's avatar
oharboe committed
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
	{0xB3,"LM3S1635"},
	{0xB4,"LM3S1850"},
	{0xB5,"LM3S1960"},
	{0xB7,"LM3S1937"},
	{0xB8,"LM3S1968"},
	{0xB9,"LM3S1751"},
	{0xBA,"LM3S1439"},
	{0xBB,"LM3S1512"},
	{0xBC,"LM3S1435"},
	{0xBD,"LM3S1637"},
	{0xBE,"LM3S1958"},
	{0xBF,"LM3S1110"},
	{0xC0,"LM3S1620"},
	{0xC1,"LM3S1150"},
	{0xC2,"LM3S1165"},
	{0xC3,"LM3S1133"},
	{0xC4,"LM3S1162"},
	{0xC5,"LM3S1138"},
	{0xC6,"LM3S1332"},
	{0xC7,"LM3S1538"},
	{0xD0,"LM3S6815"},
	{0xD1,"LM3S6816"},
	{0xD2,"LM3S6915"},
	{0xD3,"LM3S6916"},
	{0xD4,"LM3S2016"},
	{0xD5,"LM3S1615"},
	{0xD6,"LM3S1616"},
	{0xD7,"LM3S8971"},
	{0xD8,"LM3S1108"},
	{0xD9,"LM3S1101"},
	{0xDA,"LM3S1608"},
	{0xDB,"LM3S1601"},
	{0xDC,"LM3S1918"},
	{0xDD,"LM3S1911"},
	{0xDE,"LM3S2108"},
	{0xDF,"LM3S2101"},
	{0xE0,"LM3S2608"},
	{0xE1,"LM3S2601"},
	{0xE2,"LM3S2918"},
	{0xE3,"LM3S2911"},
	{0xE4,"LM3S6118"},
	{0xE5,"LM3S6111"},
	{0xE6,"LM3S6618"},
	{0xE7,"LM3S6611"},
	{0xE8,"LM3S6918"},
	{0xE9,"LM3S6911"},
	{0,"Unknown part"}
};

234
char * StellarisClassname[5] =
oharboe's avatar
oharboe committed
235
236
{
	"Sandstorm",
237
238
239
240
	"Fury",
	"Unknown",
	"DustDevil",
	"Tempest"
oharboe's avatar
oharboe committed
241
242
243
244
245
246
247
248
249
250
251
252
253
254
};

/***************************************************************************
*	openocd command interface                                              *
***************************************************************************/

/* flash_bank stellaris <base> <size> 0 0 <target#>
 */
int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
{
	stellaris_flash_bank_t *stellaris_info;
	
	if (argc < 6)
	{
255
		LOG_WARNING("incomplete flash_bank stellaris configuration");
oharboe's avatar
oharboe committed
256
257
258
		return ERROR_FLASH_BANK_INVALID;
	}
	
259
	stellaris_info = calloc(sizeof(stellaris_flash_bank_t), 1);
oharboe's avatar
oharboe committed
260
261
262
263
264
265
266
267
268
269
270
271
272
273
	bank->base = 0x0;
	bank->driver_priv = stellaris_info;
	
	stellaris_info->target_name = "Unknown target";
	
	/* part wasn't probed for info yet */
	stellaris_info->did1 = 0;
	
	/* TODO Use an optional main oscillator clock rate in kHz from arg[6] */ 
	return ERROR_OK;
}

int stellaris_register_commands(struct command_context_s *cmd_ctx)
{
274
275
276
	command_t *stm32x_cmd = register_command(cmd_ctx, NULL, "stellaris", NULL, COMMAND_ANY, "stellaris flash specific commands");
	
	register_command(cmd_ctx, stm32x_cmd, "mass_erase", stellaris_handle_mass_erase_command, COMMAND_EXEC, "mass erase device");
oharboe's avatar
oharboe committed
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
	return ERROR_OK;
}

int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
{
	int printed, device_class;
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	
	stellaris_read_part_info(bank);

	if (stellaris_info->did1 == 0)
	{
		printed = snprintf(buf, buf_size, "Cannot identify target as a Stellaris\n");
		buf += printed;
		buf_size -= printed;
		return ERROR_FLASH_OPERATION_FAILED;
	}
	
295
	if (DID0_VER(stellaris_info->did0) > 0)
oharboe's avatar
oharboe committed
296
	{
297
		device_class = (stellaris_info->did0>>16) & 0xFF;
oharboe's avatar
oharboe committed
298
299
300
301
302
	}
	else
	{
		device_class = 0;
	}	
303
304
	printed = snprintf(buf, buf_size, "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
	  device_class, StellarisClassname[device_class], stellaris_info->target_name,
305
	  'A' + ((stellaris_info->did0>>8) & 0xFF), (stellaris_info->did0) & 0xFF);
oharboe's avatar
oharboe committed
306
307
308
	buf += printed;
	buf_size -= printed;

309
	printed = snprintf(buf, buf_size, "did1: 0x%8.8x, arch: 0x%4.4x, eproc: %s, ramsize:%ik, flashsize: %ik\n", 
310
	 stellaris_info->did1, stellaris_info->did1, "ARMV7M", (1+((stellaris_info->dc0>>16) & 0xFFFF))/4, (1+(stellaris_info->dc0 & 0xFFFF))*2);
oharboe's avatar
oharboe committed
311
312
313
	buf += printed;
	buf_size -= printed;

314
	printed = snprintf(buf, buf_size, "master clock(estimated): %ikHz, rcc is 0x%x \n", stellaris_info->mck_freq / 1000, stellaris_info->rcc);
oharboe's avatar
oharboe committed
315
316
317
	buf += printed;
	buf_size -= printed;

318
319
	if (stellaris_info->num_lockbits>0)
	{
oharboe's avatar
oharboe committed
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
		printed = snprintf(buf, buf_size, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n", stellaris_info->pagesize, stellaris_info->num_lockbits, stellaris_info->lockbits,stellaris_info->num_pages/stellaris_info->num_lockbits);
		buf += printed;
		buf_size -= printed;
	}
	return ERROR_OK;
}

/***************************************************************************
*	chip identification and status                                         *
***************************************************************************/

u32 stellaris_get_flash_status(flash_bank_t *bank)
{
	target_t *target = bank->target;
	u32 fmc;
	
	target_read_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, &fmc);
	
	return fmc;
}

/** Read clock configuration and set stellaris_info->usec_clocks*/
 
void stellaris_read_clock_info(flash_bank_t *bank)
{
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	target_t *target = bank->target;
	u32 rcc, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
	unsigned long mainfreq;

	target_read_u32(target, SCB_BASE|RCC, &rcc);
351
	LOG_DEBUG("Stellaris RCC %x", rcc);
oharboe's avatar
oharboe committed
352
	target_read_u32(target, SCB_BASE|PLLCFG, &pllcfg);
353
	LOG_DEBUG("Stellaris PLLCFG %x", pllcfg);
oharboe's avatar
oharboe committed
354
355
	stellaris_info->rcc = rcc;
	
356
357
358
359
	sysdiv = (rcc>>23) & 0xF;
	usesysdiv = (rcc>>22) & 0x1;
	bypass = (rcc>>11) & 0x1;
	oscsrc = (rcc>>4) & 0x3;
oharboe's avatar
oharboe committed
360
361
362
363
364
365
366
367
368
369
370
371
372
	/* xtal = (rcc>>6)&0xF; */
	switch (oscsrc)
	{
		case 0:
			mainfreq = 6000000;  /* Default xtal */
			break;
		case 1:
			mainfreq = 22500000; /* Internal osc. 15 MHz +- 50% */
			break;
		case 2:
			mainfreq = 5625000;  /* Internal osc. / 4 */
			break;
		case 3:
373
			LOG_WARNING("Invalid oscsrc (3) in rcc register");
oharboe's avatar
oharboe committed
374
375
			mainfreq = 6000000;
			break;
oharboe's avatar
oharboe committed
376
377
378
379

		default: /* NOTREACHED */
			mainfreq = 0;
			break;
oharboe's avatar
oharboe committed
380
381
382
383
384
385
386
387
388
389
390
	}
	
	if (!bypass)
		mainfreq = 200000000; /* PLL out frec */
		
	if (usesysdiv)
		stellaris_info->mck_freq = mainfreq/(1+sysdiv);
	else
		stellaris_info->mck_freq = mainfreq;
	
	/* Forget old flash timing */
391
	stellaris_set_flash_mode(bank, 0);
oharboe's avatar
oharboe committed
392
393
394
395
396
397
398
399
400
}

/* Setup the timimg registers */
void stellaris_set_flash_mode(flash_bank_t *bank,int mode)
{
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	target_t *target = bank->target;

	u32 usecrl = (stellaris_info->mck_freq/1000000ul-1);
401
	LOG_DEBUG("usecrl = %i",usecrl);	
402
	target_write_u32(target, SCB_BASE|USECRL, usecrl);
oharboe's avatar
oharboe committed
403
404
405
406
407
408
409
410
411
}

u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout)
{
	u32 status;
	
	/* Stellaris waits for cmdbit to clear */
	while (((status = stellaris_get_flash_status(bank)) & waitbits) && (timeout-- > 0))
	{
412
		LOG_DEBUG("status: 0x%x", status);
oharboe's avatar
oharboe committed
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
		usleep(1000);
	}
	
	/* Flash errors are reflected in the FLASH_CRIS register */

	return status;
}

/* Send one command to the flash controller */
int stellaris_flash_command(struct flash_bank_s *bank,u8 cmd,u16 pagen) 
{
	u32 fmc;
	target_t *target = bank->target;

	fmc = FMC_WRKEY | cmd; 
	target_write_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, fmc);
429
	LOG_DEBUG("Flash command: 0x%x", fmc);
oharboe's avatar
oharboe committed
430
431
432
433
434
435
436
437
438
439
440
441
442
443

	if (stellaris_wait_status_busy(bank, cmd, 100)) 
	{
		return ERROR_FLASH_OPERATION_FAILED;
	}		

	return ERROR_OK;
}

/* Read device id register, main clock frequency register and fill in driver info structure */
int stellaris_read_part_info(struct flash_bank_s *bank)
{
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	target_t *target = bank->target;
444
	u32 did0, did1, ver, fam, status;
oharboe's avatar
oharboe committed
445
446
447
448
449
450
451
	int i;
	
	/* Read and parse chip identification register */
	target_read_u32(target, SCB_BASE|DID0, &did0);
	target_read_u32(target, SCB_BASE|DID1, &did1);
	target_read_u32(target, SCB_BASE|DC0, &stellaris_info->dc0);
	target_read_u32(target, SCB_BASE|DC1, &stellaris_info->dc1);
452
	LOG_DEBUG("did0 0x%x, did1 0x%x, dc0 0x%x, dc1 0x%x", did0, did1, stellaris_info->dc0, stellaris_info->dc1);
oharboe's avatar
oharboe committed
453

454
455
	ver = did0 >> 28;
	if((ver != 0) && (ver != 1))
oharboe's avatar
oharboe committed
456
	{
457
		LOG_WARNING("Unknown did0 version, cannot identify target");
ntfreak's avatar
ntfreak committed
458
		return ERROR_FLASH_OPERATION_FAILED;
oharboe's avatar
oharboe committed
459
460
	}

461
462
	if (did1 == 0)
	{
463
		LOG_WARNING("Cannot identify target as a Stellaris");
464
465
466
		return ERROR_FLASH_OPERATION_FAILED;
	}

467
468
469
	ver = did1 >> 28;
	fam = (did1 >> 24) & 0xF;
	if(((ver != 0) && (ver != 1)) || (fam != 0))
oharboe's avatar
oharboe committed
470
	{
471
		LOG_WARNING("Unknown did1 version/family, cannot positively identify target as a Stellaris");
oharboe's avatar
oharboe committed
472
473
	}

474
	for (i = 0; StellarisParts[i].partno; i++)
oharboe's avatar
oharboe committed
475
	{
476
		if (StellarisParts[i].partno == ((did1 >> 16) & 0xFF))
oharboe's avatar
oharboe committed
477
478
479
480
481
482
483
484
			break;
	}
	
	stellaris_info->target_name = StellarisParts[i].partname;
	
	stellaris_info->did0 = did0;
	stellaris_info->did1 = did1;

485
486
	stellaris_info->num_lockbits = 1 + (stellaris_info->dc0 & 0xFFFF);
	stellaris_info->num_pages = 2 *(1+(stellaris_info->dc0 & 0xFFFF));
oharboe's avatar
oharboe committed
487
	stellaris_info->pagesize = 1024;
488
	bank->size = 1024 * stellaris_info->num_pages;
oharboe's avatar
oharboe committed
489
490
491
	stellaris_info->pages_in_lockregion = 2;
	target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);

492
493
494
495
496
	/* provide this for the benefit of the higher flash driver layers */
	bank->num_sectors = stellaris_info->num_pages;
	bank->sectors = malloc(sizeof(flash_sector_t) * bank->num_sectors);
	for (i = 0; i < bank->num_sectors; i++)
	{
497
		bank->sectors[i].offset = i * stellaris_info->pagesize;
498
499
500
501
502
		bank->sectors[i].size = stellaris_info->pagesize;
		bank->sectors[i].is_erased = -1;
		bank->sectors[i].is_protected = -1;
	}

503
	/* Read main and master clock freqency register */
oharboe's avatar
oharboe committed
504
505
506
507
508
509
510
511
	stellaris_read_clock_info(bank);
	
	status = stellaris_get_flash_status(bank);
	
	return ERROR_OK;
}

/***************************************************************************
512
*	flash operations                                                       *
oharboe's avatar
oharboe committed
513
514
515
516
517
518
519
520
***************************************************************************/

int stellaris_protect_check(struct flash_bank_s *bank)
{
	u32 status;
	
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;

521
522
523
524
525
	if (bank->target->state != TARGET_HALTED)
	{
		return ERROR_TARGET_NOT_HALTED;
	}

oharboe's avatar
oharboe committed
526
527
528
529
530
531
532
	if (stellaris_info->did1 == 0)
	{
		stellaris_read_part_info(bank);
	}

	if (stellaris_info->did1 == 0)
	{
533
		LOG_WARNING("Cannot identify target as an AT91SAM");
oharboe's avatar
oharboe committed
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
		return ERROR_FLASH_OPERATION_FAILED;
	}
		
	status = stellaris_get_flash_status(bank);
	stellaris_info->lockbits = status >> 16;
	
	return ERROR_OK;
}

int stellaris_erase(struct flash_bank_s *bank, int first, int last)
{
	int banknr;
	u32 flash_fmc, flash_cris;
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	target_t *target = bank->target;
	
550
551
552
553
554
	if (bank->target->state != TARGET_HALTED)
	{
		return ERROR_TARGET_NOT_HALTED;
	}

oharboe's avatar
oharboe committed
555
556
557
558
559
560
561
	if (stellaris_info->did1 == 0)
	{
		stellaris_read_part_info(bank);
	}

	if (stellaris_info->did1 == 0)
	{
562
		LOG_WARNING("Cannot identify target as Stellaris");
oharboe's avatar
oharboe committed
563
564
565
566
567
568
569
		return ERROR_FLASH_OPERATION_FAILED;
	}	
	
	if ((first < 0) || (last < first) || (last >= stellaris_info->num_pages))
	{
		return ERROR_FLASH_SECTOR_INVALID;
	}
570
571
572
573
574
575
	
	if ((first == 0) && (last == (stellaris_info->num_pages-1)))
	{
		return stellaris_mass_erase(bank);
	}
	
oharboe's avatar
oharboe committed
576
577
578
579
580
581
582
	/* Configure the flash controller timing */
	stellaris_read_clock_info(bank);	
	stellaris_set_flash_mode(bank,0);

	/* Clear and disable flash programming interrupts */
	target_write_u32(target, FLASH_CIM, 0);
	target_write_u32(target, FLASH_MISC, PMISC|AMISC);
583
	
584
	for (banknr = first; banknr <= last; banknr++)
oharboe's avatar
oharboe committed
585
586
	{
		/* Address is first word in page */
587
		target_write_u32(target, FLASH_FMA, banknr * stellaris_info->pagesize);
oharboe's avatar
oharboe committed
588
589
590
591
592
593
594
595
596
597
598
599
600
		/* Write erase command */
		target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_ERASE);
		/* Wait until erase complete */
		do
		{
			target_read_u32(target, FLASH_FMC, &flash_fmc);
		}
		while(flash_fmc & FMC_ERASE);

		/* Check acess violations */
		target_read_u32(target, FLASH_CRIS, &flash_cris);
		if(flash_cris & (AMASK))
		{
601
			LOG_WARNING("Error erasing flash page %i,  flash_cris 0x%x", banknr, flash_cris);
oharboe's avatar
oharboe committed
602
603
604
			target_write_u32(target, FLASH_CRIS, 0);
			return ERROR_FLASH_OPERATION_FAILED;
		}
ntfreak's avatar
ntfreak committed
605
606
		
		bank->sectors[banknr].is_erased = 1;
oharboe's avatar
oharboe committed
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
	}

	return ERROR_OK;
}

int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last)
{
	u32 fmppe, flash_fmc, flash_cris;
	int lockregion;
	
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	target_t *target = bank->target;
	
	if (bank->target->state != TARGET_HALTED)
	{
		return ERROR_TARGET_NOT_HALTED;
	}
	
	if ((first < 0) || (last < first) || (last >= stellaris_info->num_lockbits))
	{
		return ERROR_FLASH_SECTOR_INVALID;
	}
	
	if (stellaris_info->did1 == 0)
	{
		stellaris_read_part_info(bank);
	}

	if (stellaris_info->did1 == 0)
	{
637
		LOG_WARNING("Cannot identify target as an Stellaris MCU");
oharboe's avatar
oharboe committed
638
639
640
641
		return ERROR_FLASH_OPERATION_FAILED;
	}
	
	/* Configure the flash controller timing */
ntfreak's avatar
ntfreak committed
642
	stellaris_read_clock_info(bank);
643
	stellaris_set_flash_mode(bank, 0);
oharboe's avatar
oharboe committed
644

ntfreak's avatar
ntfreak committed
645
	fmppe = stellaris_info->lockbits;
646
	for (lockregion = first; lockregion <= last; lockregion++)
oharboe's avatar
oharboe committed
647
648
	{
		if (set)
649
			fmppe &= ~(1<<lockregion); 
oharboe's avatar
oharboe committed
650
		else
651
			fmppe |= (1<<lockregion); 
oharboe's avatar
oharboe committed
652
653
654
655
656
657
	}

	/* Clear and disable flash programming interrupts */
	target_write_u32(target, FLASH_CIM, 0);
	target_write_u32(target, FLASH_MISC, PMISC|AMISC);
	
658
	LOG_DEBUG("fmppe 0x%x",fmppe);
oharboe's avatar
oharboe committed
659
660
661
662
663
	target_write_u32(target, SCB_BASE|FMPPE, fmppe);
	/* Commit FMPPE */
	target_write_u32(target, FLASH_FMA, 1);
	/* Write commit command */
	/* TODO safety check, sice this cannot be undone */
664
	LOG_WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
oharboe's avatar
oharboe committed
665
666
667
668
669
670
671
672
673
674
675
676
	/* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
	/* Wait until erase complete */
	do
	{
		target_read_u32(target, FLASH_FMC, &flash_fmc);
	}
	while(flash_fmc & FMC_COMT);

	/* Check acess violations */
	target_read_u32(target, FLASH_CRIS, &flash_cris);
	if(flash_cris & (AMASK))
	{
677
		LOG_WARNING("Error setting flash page protection,  flash_cris 0x%x", flash_cris);
oharboe's avatar
oharboe committed
678
679
680
681
682
		target_write_u32(target, FLASH_CRIS, 0);
		return ERROR_FLASH_OPERATION_FAILED;
	}
	
	target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
683
	
oharboe's avatar
oharboe committed
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
	return ERROR_OK;
}

u8 stellaris_write_code[] = 
{
/* 
	Call with :	
	r0 = buffer address
	r1 = destination address
	r2 = bytecount (in) - endaddr (work) 
	
	Used registers:	
	r3 = pFLASH_CTRL_BASE
	r4 = FLASHWRITECMD
	r5 = #1
	r6 = bytes written
	r7 = temp reg
*/
702
703
704
705
	0x07,0x4B,			/* ldr r3,pFLASH_CTRL_BASE */
	0x08,0x4C,			/* ldr r4,FLASHWRITECMD */
	0x01,0x25,			/* movs r5, 1 */
	0x00,0x26,			/* movs r6, #0 */
oharboe's avatar
oharboe committed
706
/* mainloop: */
707
708
709
710
	0x19,0x60,			/* str	r1, [r3, #0] */
	0x87,0x59,			/* ldr	r7, [r0, r6] */
	0x5F,0x60,			/* str	r7, [r3, #4] */
	0x9C,0x60,			/* str	r4, [r3, #8] */
oharboe's avatar
oharboe committed
711
/* waitloop: */
712
713
714
715
716
717
718
	0x9F,0x68,			/* ldr	r7, [r3, #8] */
	0x2F,0x42,			/* tst	r7, r5 */
	0xFC,0xD1,			/* bne	waitloop */
	0x04,0x31,			/* adds	r1, r1, #4 */
	0x04,0x36,			/* adds	r6, r6, #4 */
	0x96,0x42,			/* cmp	r6, r2 */
	0xF4,0xD1,			/* bne	mainloop */
719
720
						/* exit: */
	0xFE,0xE7,			/* b exit */
oharboe's avatar
oharboe committed
721
/* pFLASH_CTRL_BASE: */
722
	0x00,0xD0,0x0F,0x40,	/* .word	0x400FD000 */
oharboe's avatar
oharboe committed
723
724
725
726
727
728
729
730
731
732
733
/* FLASHWRITECMD: */
	0x01,0x00,0x42,0xA4 	/* .word	0xA4420001 */
};

int stellaris_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 wcount)
{
	target_t *target = bank->target;
	u32 buffer_size = 8192;
	working_area_t *source;
	working_area_t *write_algorithm;
	u32 address = bank->base + offset;
734
	reg_param_t reg_params[3];
oharboe's avatar
oharboe committed
735
	armv7m_algorithm_t armv7m_info;
736
	int retval = ERROR_OK;
oharboe's avatar
oharboe committed
737
	
738
	LOG_DEBUG("(bank=%p buffer=%p offset=%08X wcount=%08X)",
oharboe's avatar
oharboe committed
739
			bank, buffer, offset, wcount);
oharboe's avatar
oharboe committed
740
741
742

	/* flash write code */
	if (target_alloc_working_area(target, sizeof(stellaris_write_code), &write_algorithm) != ERROR_OK)
743
744
745
746
	{
		LOG_WARNING("no working area available, can't do block memory writes");
		return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
	};
oharboe's avatar
oharboe committed
747
748
749
750
751
752

	target_write_buffer(target, write_algorithm->address, sizeof(stellaris_write_code), stellaris_write_code);

	/* memory buffer */
	while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
	{
753
		LOG_DEBUG("called target_alloc_working_area(target=%p buffer_size=%08X source=%p)",
oharboe's avatar
oharboe committed
754
				target, buffer_size, source); 
oharboe's avatar
oharboe committed
755
756
757
758
759
760
761
		buffer_size /= 2;
		if (buffer_size <= 256)
		{
			/* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
			if (write_algorithm)
				target_free_working_area(target, write_algorithm);
			
762
			LOG_WARNING("no large enough working area available, can't do block memory writes");
oharboe's avatar
oharboe committed
763
764
765
766
767
768
769
770
771
772
			return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
		}
	};
	
	armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
	armv7m_info.core_mode = ARMV7M_MODE_ANY;
	
	init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
	init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
	init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
773
	
oharboe's avatar
oharboe committed
774
775
776
777
778
779
780
781
782
	while (wcount > 0)
	{
		u32 thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
		
		target_write_buffer(target, source->address, thisrun_count * 4, buffer);
		
		buf_set_u32(reg_params[0].value, 0, 32, source->address);
		buf_set_u32(reg_params[1].value, 0, 32, address);
		buf_set_u32(reg_params[2].value, 0, 32, 4*thisrun_count);
783
784
		LOG_INFO("Algorithm flash write %i words to 0x%x, %i remaining", thisrun_count, address, wcount);
		LOG_DEBUG("Algorithm flash write %i words to 0x%x, %i remaining", thisrun_count, address, wcount);
oharboe's avatar
oharboe committed
785
786
		if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, write_algorithm->address, write_algorithm->address + sizeof(stellaris_write_code)-10, 10000, &armv7m_info)) != ERROR_OK)
		{
787
			LOG_ERROR("error executing stellaris flash write algorithm");
788
789
			retval = ERROR_FLASH_OPERATION_FAILED;
			break;
oharboe's avatar
oharboe committed
790
791
792
793
794
795
796
797
798
799
800
801
802
803
		}
	
		buffer += thisrun_count * 4;
		address += thisrun_count * 4;
		wcount -= thisrun_count;
	}
	
	target_free_working_area(target, write_algorithm);
	target_free_working_area(target, source);
	
	destroy_reg_param(&reg_params[0]);
	destroy_reg_param(&reg_params[1]);
	destroy_reg_param(&reg_params[2]);
	
804
	return retval;
oharboe's avatar
oharboe committed
805
806
807
808
809
810
811
812
813
814
}

int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
{
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
	target_t *target = bank->target;
	u32 address = offset;
	u32 flash_cris,flash_fmc;
	u32 retval;
	
815
816
817
818
819
	if (bank->target->state != TARGET_HALTED)
	{
		return ERROR_TARGET_NOT_HALTED;
	}

820
	LOG_DEBUG("(bank=%p buffer=%p offset=%08X count=%08X)",
oharboe's avatar
oharboe committed
821
			bank, buffer, offset, count);
oharboe's avatar
oharboe committed
822
823
824
825
826
827
828
829

	if (stellaris_info->did1 == 0)
	{
		stellaris_read_part_info(bank);
	}

	if (stellaris_info->did1 == 0)
	{
830
		LOG_WARNING("Cannot identify target as a Stellaris processor");
oharboe's avatar
oharboe committed
831
832
833
834
835
		return ERROR_FLASH_OPERATION_FAILED;
	}
	
	if((offset & 3) || (count & 3))
	{
836
		LOG_WARNING("offset size must be word aligned");
oharboe's avatar
oharboe committed
837
838
839
840
841
842
843
844
		return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
	}
	
	if (offset + count > bank->size)
		return ERROR_FLASH_DST_OUT_OF_BANK;

	/* Configure the flash controller timing */	
	stellaris_read_clock_info(bank);	
845
	stellaris_set_flash_mode(bank, 0);
oharboe's avatar
oharboe committed
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
	
	/* Clear and disable flash programming interrupts */
	target_write_u32(target, FLASH_CIM, 0);
	target_write_u32(target, FLASH_MISC, PMISC|AMISC);

	/* multiple words to be programmed? */
	if (count > 0) 
	{
		/* try using a block write */
		if ((retval = stellaris_write_block(bank, buffer, offset, count/4)) != ERROR_OK)
		{
			if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
			{
				/* if block write failed (no sufficient working area),
				 * we use normal (slow) single dword accesses */ 
861
				LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
oharboe's avatar
oharboe committed
862
863
864
865
866
867
			}
			else if (retval == ERROR_FLASH_OPERATION_FAILED)
			{
				/* if an error occured, we examine the reason, and quit */
				target_read_u32(target, FLASH_CRIS, &flash_cris);
				
868
				LOG_ERROR("flash writing failed with CRIS: 0x%x", flash_cris);
oharboe's avatar
oharboe committed
869
870
871
872
873
874
875
876
877
878
				return ERROR_FLASH_OPERATION_FAILED;
			}
		}
		else
		{
			buffer += count * 4;
			address += count * 4;
			count = 0;
		}
	}
879
	
880
	while (count > 0)
oharboe's avatar
oharboe committed
881
	{
882
883
884
		if (!(address & 0xff))
			LOG_DEBUG("0x%x", address);
		
oharboe's avatar
oharboe committed
885
886
887
888
		/* Program one word */
		target_write_u32(target, FLASH_FMA, address);
		target_write_buffer(target, FLASH_FMD, 4, buffer);
		target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
889
		/* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
oharboe's avatar
oharboe committed
890
891
892
893
894
		/* Wait until write complete */
		do
		{
			target_read_u32(target, FLASH_FMC, &flash_fmc);
		}
895
		while (flash_fmc & FMC_WRITE);
oharboe's avatar
oharboe committed
896
897
898
899
900
901
		buffer += 4;
		address += 4;
		count -= 4;
	}
	/* Check acess violations */
	target_read_u32(target, FLASH_CRIS, &flash_cris);
902
	if (flash_cris & (AMASK))
oharboe's avatar
oharboe committed
903
	{
904
		LOG_DEBUG("flash_cris 0x%x", flash_cris);
oharboe's avatar
oharboe committed
905
906
907
908
909
910
911
912
913
914
915
		return ERROR_FLASH_OPERATION_FAILED;
	}
	return ERROR_OK;
}

int stellaris_probe(struct flash_bank_s *bank)
{
	/* we can't probe on an stellaris
	 * if this is an stellaris, it has the configured flash
	 */
	
916
	if (bank->target->state != TARGET_HALTED)
oharboe's avatar
oharboe committed
917
	{
918
		return ERROR_TARGET_NOT_HALTED;
oharboe's avatar
oharboe committed
919
920
	}

921
922
	/* stellaris_read_part_info() already takes care about error checking and reporting */
	return stellaris_read_part_info(bank);
oharboe's avatar
oharboe committed
923
924
925
926
927
}

int stellaris_auto_probe(struct flash_bank_s *bank)
{
	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
928
	if (stellaris_info->did1)
oharboe's avatar
oharboe committed
929
930
931
		return ERROR_OK;
	return stellaris_probe(bank);
}
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972

int stellaris_mass_erase(struct flash_bank_s *bank)
{
	target_t *target = NULL;
	stellaris_flash_bank_t *stellaris_info = NULL;
	u32 flash_fmc;
	
	stellaris_info = bank->driver_priv;
	target = bank->target;
	
	if (target->state != TARGET_HALTED)
	{
		return ERROR_TARGET_NOT_HALTED;
	}
	
	if (stellaris_info->did1 == 0)
	{
		stellaris_read_part_info(bank);
	}
	
	if (stellaris_info->did1 == 0)
	{
		LOG_WARNING("Cannot identify target as Stellaris");
		return ERROR_FLASH_OPERATION_FAILED;
	}
	
	/* Configure the flash controller timing */
	stellaris_read_clock_info(bank);	
	stellaris_set_flash_mode(bank, 0);

	/* Clear and disable flash programming interrupts */
	target_write_u32(target, FLASH_CIM, 0);
	target_write_u32(target, FLASH_MISC, PMISC|AMISC);
	
	target_write_u32(target, FLASH_FMA, 0);
	target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
	/* Wait until erase complete */
	do
	{
		target_read_u32(target, FLASH_FMC, &flash_fmc);
	}
973
	while (flash_fmc & FMC_MERASE);
974
975
976
	
	/* if device has > 128k, then second erase cycle is needed
	 * this is only valid for older devices, but will not hurt */
977
	if (stellaris_info->num_pages * stellaris_info->pagesize > 0x20000)
978
979
980
981
982
983
984
985
	{
		target_write_u32(target, FLASH_FMA, 0x20000);
		target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
		/* Wait until erase complete */
		do
		{
			target_read_u32(target, FLASH_FMC, &flash_fmc);
		}
986
		while (flash_fmc & FMC_MERASE);
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
	}
	
	return ERROR_OK;
}

int stellaris_handle_mass_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
	flash_bank_t *bank;
	int i;
	
	if (argc < 1)
	{
		command_print(cmd_ctx, "stellaris mass_erase <bank>");
		return ERROR_OK;