1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * Copyright (C) 2008 by John McCarthy *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
31 #include <target/algorithm.h>
32 #include <target/mips32.h>
33 #include <target/mips_m4k.h>
35 #define PIC32MX_MANUF_ID 0x029
37 /* pic32mx memory locations */
39 #define PIC32MX_PHYS_RAM 0x00000000
40 #define PIC32MX_PHYS_PGM_FLASH 0x1D000000
41 #define PIC32MX_PHYS_PERIPHERALS 0x1F800000
42 #define PIC32MX_PHYS_BOOT_FLASH 0x1FC00000
45 * Translate Virtual and Physical addresses.
46 * Note: These macros only work for KSEG0/KSEG1 addresses.
49 #define Virt2Phys(v) ((v) & 0x1FFFFFFF)
51 /* pic32mx configuration register locations */
53 #define PIC32MX_DEVCFG0 0xBFC02FFC
54 #define PIC32MX_DEVCFG1 0xBFC02FF8
55 #define PIC32MX_DEVCFG2 0xBFC02FF4
56 #define PIC32MX_DEVCFG3 0xBFC02FF0
57 #define PIC32MX_DEVID 0xBF80F220
59 #define PIC32MX_BMXPFMSZ 0xBF882060
60 #define PIC32MX_BMXBOOTSZ 0xBF882070
61 #define PIC32MX_BMXDRMSZ 0xBF882040
63 /* pic32mx flash controller register locations */
65 #define PIC32MX_NVMCON 0xBF80F400
66 #define PIC32MX_NVMCONCLR 0xBF80F404
67 #define PIC32MX_NVMCONSET 0xBF80F408
68 #define PIC32MX_NVMCONINV 0xBF80F40C
69 #define NVMCON_NVMWR (1 << 15)
70 #define NVMCON_NVMWREN (1 << 14)
71 #define NVMCON_NVMERR (1 << 13)
72 #define NVMCON_LVDERR (1 << 12)
73 #define NVMCON_LVDSTAT (1 << 11)
74 #define NVMCON_OP_PFM_ERASE 0x5
75 #define NVMCON_OP_PAGE_ERASE 0x4
76 #define NVMCON_OP_ROW_PROG 0x3
77 #define NVMCON_OP_WORD_PROG 0x1
78 #define NVMCON_OP_NOP 0x0
80 #define PIC32MX_NVMKEY 0xBF80F410
81 #define PIC32MX_NVMADDR 0xBF80F420
82 #define PIC32MX_NVMADDRCLR 0xBF80F424
83 #define PIC32MX_NVMADDRSET 0xBF80F428
84 #define PIC32MX_NVMADDRINV 0xBF80F42C
85 #define PIC32MX_NVMDATA 0xBF80F430
86 #define PIC32MX_NVMSRCADDR 0xBF80F440
88 /* flash unlock keys */
90 #define NVMKEY1 0xAA996655
91 #define NVMKEY2 0x556699AA
93 struct pic32mx_flash_bank
95 struct working_area
*write_algorithm
;
100 * DEVID values as per PIC32MX Flash Programming Specification Rev H
103 static const struct pic32mx_devs_s
{
107 {0x04A07053, "110F016B"},
108 {0x04A09053, "110F016C"},
109 {0x04A0B053, "110F016D"},
110 {0x04A06053, "120F032B"},
111 {0x04A08053, "120F032C"},
112 {0x04A0A053, "120F032D"},
113 {0x04A01053, "210F016B"},
114 {0x04A03053, "210F016C"},
115 {0x04A05053, "210F016D"},
116 {0x04A00053, "220F032B"},
117 {0x04A02053, "220F032C"},
118 {0x04A04053, "220F032D"},
119 {0x00938053, "360F512L"},
120 {0x00934053, "360F256L"},
121 {0x0092D053, "340F128L"},
122 {0x0092A053, "320F128L"},
123 {0x00916053, "340F512H"},
124 {0x00912053, "340F256H"},
125 {0x0090D053, "340F128H"},
126 {0x0090A053, "320F128H"},
127 {0x00906053, "320F064H"},
128 {0x00902053, "320F032H"},
129 {0x00978053, "460F512L"},
130 {0x00974053, "460F256L"},
131 {0x0096D053, "440F128L"},
132 {0x00952053, "440F256H"},
133 {0x00956053, "440F512H"},
134 {0x0094D053, "440F128H"},
135 {0x00942053, "420F032H"},
136 {0x04307053, "795F512L"},
137 {0x0430E053, "795F512H"},
138 {0x04306053, "775F512L"},
139 {0x0430D053, "775F512H"},
140 {0x04312053, "775F256L"},
141 {0x04303053, "775F256H"},
142 {0x04417053, "764F128L"},
143 {0x0440B053, "764F128H"},
144 {0x04341053, "695F512L"},
145 {0x04325053, "695F512H"},
146 {0x04311053, "675F512L"},
147 {0x0430C053, "675F512H"},
148 {0x04305053, "675F256L"},
149 {0x0430B053, "675F256H"},
150 {0x04413053, "664F128L"},
151 {0x04407053, "664F128H"},
152 {0x04411053, "664F064L"},
153 {0x04405053, "664F064H"},
154 {0x0430F053, "575F512L"},
155 {0x04309053, "575F512H"},
156 {0x04333053, "575F256L"},
157 {0x04317053, "575F256H"},
158 {0x0440F053, "564F128L"},
159 {0x04403053, "564F128H"},
160 {0x0440D053, "564F064L"},
161 {0x04401053, "564F064H"},
162 {0x04400053, "534F064H"},
163 {0x0440C053, "534F064L"},
167 /* flash bank pic32mx <base> <size> 0 0 <target#>
169 FLASH_BANK_COMMAND_HANDLER(pic32mx_flash_bank_command
)
171 struct pic32mx_flash_bank
*pic32mx_info
;
175 return ERROR_COMMAND_SYNTAX_ERROR
;
178 pic32mx_info
= malloc(sizeof(struct pic32mx_flash_bank
));
179 bank
->driver_priv
= pic32mx_info
;
181 pic32mx_info
->write_algorithm
= NULL
;
182 pic32mx_info
->probed
= 0;
187 static uint32_t pic32mx_get_flash_status(struct flash_bank
*bank
)
189 struct target
*target
= bank
->target
;
192 target_read_u32(target
, PIC32MX_NVMCON
, &status
);
197 static uint32_t pic32mx_wait_status_busy(struct flash_bank
*bank
, int timeout
)
201 /* wait for busy to clear */
202 while (((status
= pic32mx_get_flash_status(bank
)) & NVMCON_NVMWR
) && (timeout
-- > 0))
204 LOG_DEBUG("status: 0x%" PRIx32
, status
);
208 LOG_DEBUG("timeout: status: 0x%" PRIx32
, status
);
213 static int pic32mx_nvm_exec(struct flash_bank
*bank
, uint32_t op
, uint32_t timeout
)
215 struct target
*target
= bank
->target
;
218 target_write_u32(target
, PIC32MX_NVMCON
, NVMCON_NVMWREN
| op
);
220 /* unlock flash registers */
221 target_write_u32(target
, PIC32MX_NVMKEY
, NVMKEY1
);
222 target_write_u32(target
, PIC32MX_NVMKEY
, NVMKEY2
);
224 /* start operation */
225 target_write_u32(target
, PIC32MX_NVMCONSET
, NVMCON_NVMWR
);
227 status
= pic32mx_wait_status_busy(bank
, timeout
);
229 /* lock flash registers */
230 target_write_u32(target
, PIC32MX_NVMCONCLR
, NVMCON_NVMWREN
);
235 static int pic32mx_protect_check(struct flash_bank
*bank
)
237 struct target
*target
= bank
->target
;
243 if (target
->state
!= TARGET_HALTED
)
245 LOG_ERROR("Target not halted");
246 return ERROR_TARGET_NOT_HALTED
;
249 target_read_u32(target
, PIC32MX_DEVCFG0
, &devcfg0
);
251 if ((devcfg0
& (1 << 28)) == 0) /* code protect bit */
252 num_pages
= 0xffff; /* All pages protected */
253 else if (Virt2Phys(bank
->base
) == PIC32MX_PHYS_BOOT_FLASH
)
255 if (devcfg0
& (1 << 24))
256 num_pages
= 0; /* All pages unprotected */
258 num_pages
= 0xffff; /* All pages protected */
261 num_pages
= (~devcfg0
>> 12) & 0xff;
263 for (s
= 0; s
< bank
->num_sectors
&& s
< num_pages
; s
++)
264 bank
->sectors
[s
].is_protected
= 1;
265 for (; s
< bank
->num_sectors
; s
++)
266 bank
->sectors
[s
].is_protected
= 0;
271 static int pic32mx_erase(struct flash_bank
*bank
, int first
, int last
)
273 struct target
*target
= bank
->target
;
277 if (bank
->target
->state
!= TARGET_HALTED
)
279 LOG_ERROR("Target not halted");
280 return ERROR_TARGET_NOT_HALTED
;
283 if ((first
== 0) && (last
== (bank
->num_sectors
- 1))
284 && (Virt2Phys(bank
->base
) == PIC32MX_PHYS_PGM_FLASH
))
286 /* this will only erase the Program Flash (PFM), not the Boot Flash (BFM)
287 * we need to use the MTAP to perform a full erase */
288 LOG_DEBUG("Erasing entire program flash");
289 status
= pic32mx_nvm_exec(bank
, NVMCON_OP_PFM_ERASE
, 50);
290 if (status
& NVMCON_NVMERR
)
291 return ERROR_FLASH_OPERATION_FAILED
;
292 if (status
& NVMCON_LVDERR
)
293 return ERROR_FLASH_OPERATION_FAILED
;
297 for (i
= first
; i
<= last
; i
++)
299 target_write_u32(target
, PIC32MX_NVMADDR
, Virt2Phys(bank
->base
+ bank
->sectors
[i
].offset
));
301 status
= pic32mx_nvm_exec(bank
, NVMCON_OP_PAGE_ERASE
, 10);
303 if (status
& NVMCON_NVMERR
)
304 return ERROR_FLASH_OPERATION_FAILED
;
305 if (status
& NVMCON_LVDERR
)
306 return ERROR_FLASH_OPERATION_FAILED
;
307 bank
->sectors
[i
].is_erased
= 1;
313 static int pic32mx_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
315 struct target
*target
= bank
->target
;
317 if (target
->state
!= TARGET_HALTED
)
319 LOG_ERROR("Target not halted");
320 return ERROR_TARGET_NOT_HALTED
;
326 /* see contib/loaders/flash/pic32mx.s for src */
328 static const uint32_t pic32mx_flash_write_code
[] = {
330 0x3C08AA99, /* lui $t0, 0xaa99 */
331 0x35086655, /* ori $t0, 0x6655 */
332 0x3C095566, /* lui $t1, 0x5566 */
333 0x352999AA, /* ori $t1, 0x99aa */
334 0x3C0ABF80, /* lui $t2, 0xbf80 */
335 0x354AF400, /* ori $t2, 0xf400 */
336 0x340B4003, /* ori $t3, $zero, 0x4003 */
337 0x340C8000, /* ori $t4, $zero, 0x8000 */
339 0x2CD30080, /* sltiu $s3, $a2, 128 */
340 0x16600008, /* bne $s3, $zero, write_word */
341 0x340D4000, /* ori $t5, $zero, 0x4000 */
342 0xAD450020, /* sw $a1, 32($t2) */
343 0xAD440040, /* sw $a0, 64($t2) */
344 0x04110016, /* bal progflash */
345 0x24840200, /* addiu $a0, $a0, 512 */
346 0x24A50200, /* addiu $a1, $a1, 512 */
347 0x1000FFF7, /* beq $zero, $zero, write_row */
348 0x24C6FF80, /* addiu $a2, $a2, -128 */
350 0x3C15A000, /* lui $s5, 0xa000 */
351 0x36B50000, /* ori $s5, $s5, 0x0 */
352 0x00952025, /* or $a0, $a0, $s5 */
353 0x10000008, /* beq $zero, $zero, next_word */
354 0x340B4001, /* ori $t3, $zero, 0x4001 */
356 0x8C940000, /* lw $s4, 0($a0) */
357 0xAD540030, /* sw $s4, 48($t2) */
358 0xAD450020, /* sw $a1, 32($t2) */
359 0x04110009, /* bal progflash */
360 0x24840004, /* addiu $a0, $a0, 4 */
361 0x24A50004, /* addiu $a1, $a1, 4 */
362 0x24C6FFFF, /* addiu $a2, $a2, -1 */
364 0x14C0FFF8, /* bne $a2, $zero, prog_word */
365 0x00000000, /* nop */
367 0x10000002, /* beq $zero, $zero, exit */
368 0x24040000, /* addiu $a0, $zero, 0 */
370 0x26240000, /* addiu $a0, $s1, 0 */
372 0x7000003F, /* sdbbp */
374 0xAD4B0000, /* sw $t3, 0($t2) */
375 0xAD480010, /* sw $t0, 16($t2) */
376 0xAD490010, /* sw $t1, 16($t2) */
377 0xAD4C0008, /* sw $t4, 8($t2) */
379 0x8D500000, /* lw $s0, 0($t2) */
380 0x020C8024, /* and $s0, $s0, $t4 */
381 0x1600FFFD, /* bne $s0, $zero, waitflash */
382 0x00000000, /* nop */
383 0x00000000, /* nop */
384 0x00000000, /* nop */
385 0x00000000, /* nop */
386 0x00000000, /* nop */
387 0x8D510000, /* lw $s1, 0($t2) */
388 0x30113000, /* andi $s1, $zero, 0x3000 */
389 0x1620FFEF, /* bne $s1, $zero, error */
390 0xAD4D0004, /* sw $t5, 4($t2) */
391 0x03E00008, /* jr $ra */
395 static int pic32mx_write_block(struct flash_bank
*bank
, uint8_t *buffer
,
396 uint32_t offset
, uint32_t count
)
398 struct target
*target
= bank
->target
;
399 uint32_t buffer_size
= 16384;
400 struct working_area
*source
;
401 uint32_t address
= bank
->base
+ offset
;
402 struct reg_param reg_params
[3];
403 int retval
= ERROR_OK
;
405 struct pic32mx_flash_bank
*pic32mx_info
= bank
->driver_priv
;
406 struct mips32_algorithm mips32_info
;
408 /* flash write code */
409 if (target_alloc_working_area(target
, sizeof(pic32mx_flash_write_code
),
410 &pic32mx_info
->write_algorithm
) != ERROR_OK
)
412 LOG_WARNING("no working area available, can't do block memory writes");
413 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
416 if ((retval
= target_write_buffer(target
,
417 pic32mx_info
->write_algorithm
->address
,
418 sizeof(pic32mx_flash_write_code
),
419 (uint8_t*)pic32mx_flash_write_code
)) != ERROR_OK
)
423 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
)
426 if (buffer_size
<= 256)
428 /* if we already allocated the writing code, but failed to get a
429 * buffer, free the algorithm */
430 if (pic32mx_info
->write_algorithm
)
431 target_free_working_area(target
, pic32mx_info
->write_algorithm
);
433 LOG_WARNING("no large enough working area available, can't do block memory writes");
434 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
438 mips32_info
.common_magic
= MIPS32_COMMON_MAGIC
;
439 mips32_info
.isa_mode
= MIPS32_ISA_MIPS32
;
441 init_reg_param(®_params
[0], "a0", 32, PARAM_IN_OUT
);
442 init_reg_param(®_params
[1], "a1", 32, PARAM_OUT
);
443 init_reg_param(®_params
[2], "a2", 32, PARAM_OUT
);
448 uint32_t thisrun_count
= (count
> (buffer_size
/ 4)) ?
449 (buffer_size
/ 4) : count
;
451 if ((retval
= target_write_buffer(target
, source
->address
,
452 thisrun_count
* 4, buffer
)) != ERROR_OK
)
455 buf_set_u32(reg_params
[0].value
, 0, 32, Virt2Phys(source
->address
));
456 buf_set_u32(reg_params
[1].value
, 0, 32, Virt2Phys(address
));
457 buf_set_u32(reg_params
[2].value
, 0, 32, thisrun_count
);
459 if ((retval
= target_run_algorithm(target
, 0, NULL
, 3, reg_params
,
460 pic32mx_info
->write_algorithm
->address
,
462 10000, &mips32_info
)) != ERROR_OK
)
464 LOG_ERROR("error executing pic32mx flash write algorithm");
465 retval
= ERROR_FLASH_OPERATION_FAILED
;
469 status
= buf_get_u32(reg_params
[0].value
, 0, 32);
471 if (status
& NVMCON_NVMERR
)
473 LOG_ERROR("Flash write error NVMERR (status = 0x%08" PRIx32
")", status
);
474 retval
= ERROR_FLASH_OPERATION_FAILED
;
478 if (status
& NVMCON_LVDERR
)
480 LOG_ERROR("Flash write error LVDERR (status = 0x%08" PRIx32
")", status
);
481 retval
= ERROR_FLASH_OPERATION_FAILED
;
485 buffer
+= thisrun_count
* 4;
486 address
+= thisrun_count
* 4;
487 count
-= thisrun_count
;
490 target_free_working_area(target
, source
);
491 target_free_working_area(target
, pic32mx_info
->write_algorithm
);
493 destroy_reg_param(®_params
[0]);
494 destroy_reg_param(®_params
[1]);
495 destroy_reg_param(®_params
[2]);
500 static int pic32mx_write_word(struct flash_bank
*bank
, uint32_t address
, uint32_t word
)
502 struct target
*target
= bank
->target
;
504 target_write_u32(target
, PIC32MX_NVMADDR
, Virt2Phys(address
));
505 target_write_u32(target
, PIC32MX_NVMDATA
, word
);
507 return pic32mx_nvm_exec(bank
, NVMCON_OP_WORD_PROG
, 5);
510 static int pic32mx_write(struct flash_bank
*bank
, uint8_t *buffer
, uint32_t offset
, uint32_t count
)
512 uint32_t words_remaining
= (count
/ 4);
513 uint32_t bytes_remaining
= (count
& 0x00000003);
514 uint32_t address
= bank
->base
+ offset
;
515 uint32_t bytes_written
= 0;
519 if (bank
->target
->state
!= TARGET_HALTED
)
521 LOG_ERROR("Target not halted");
522 return ERROR_TARGET_NOT_HALTED
;
525 LOG_DEBUG("writing to flash at address 0x%08" PRIx32
" at offset 0x%8.8" PRIx32
526 " count: 0x%8.8" PRIx32
"", bank
->base
, offset
, count
);
530 LOG_WARNING("offset 0x%" PRIx32
"breaks required 4-byte alignment", offset
);
531 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
534 /* multiple words (4-byte) to be programmed? */
535 if (words_remaining
> 0)
537 /* try using a block write */
538 if ((retval
= pic32mx_write_block(bank
, buffer
, offset
, words_remaining
)) != ERROR_OK
)
540 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
542 /* if block write failed (no sufficient working area),
543 * we use normal (slow) single dword accesses */
544 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
546 else if (retval
== ERROR_FLASH_OPERATION_FAILED
)
548 LOG_ERROR("flash writing failed");
554 buffer
+= words_remaining
* 4;
555 address
+= words_remaining
* 4;
560 while (words_remaining
> 0)
563 memcpy(&value
, buffer
+ bytes_written
, sizeof(uint32_t));
565 status
= pic32mx_write_word(bank
, address
, value
);
567 if (status
& NVMCON_NVMERR
)
569 LOG_ERROR("Flash write error NVMERR (status = 0x%08" PRIx32
")", status
);
570 return ERROR_FLASH_OPERATION_FAILED
;
573 if (status
& NVMCON_LVDERR
)
575 LOG_ERROR("Flash write error LVDERR (status = 0x%08" PRIx32
")", status
);
576 return ERROR_FLASH_OPERATION_FAILED
;
586 uint32_t value
= 0xffffffff;
587 memcpy(&value
, buffer
+ bytes_written
, bytes_remaining
);
589 status
= pic32mx_write_word(bank
, address
, value
);
591 if (status
& NVMCON_NVMERR
)
593 LOG_ERROR("Flash write error NVMERR (status = 0x%08" PRIx32
")", status
);
594 return ERROR_FLASH_OPERATION_FAILED
;
597 if (status
& NVMCON_LVDERR
)
599 LOG_ERROR("Flash write error LVDERR (status = 0x%08" PRIx32
")", status
);
600 return ERROR_FLASH_OPERATION_FAILED
;
607 static int pic32mx_probe(struct flash_bank
*bank
)
609 struct target
*target
= bank
->target
;
610 struct pic32mx_flash_bank
*pic32mx_info
= bank
->driver_priv
;
611 struct mips32_common
*mips32
= target
->arch_info
;
612 struct mips_ejtag
*ejtag_info
= &mips32
->ejtag_info
;
614 uint32_t num_pages
= 0;
618 pic32mx_info
->probed
= 0;
620 device_id
= ejtag_info
->idcode
;
621 LOG_INFO("device id = 0x%08" PRIx32
" (manuf 0x%03x dev 0x%04x, ver 0x%02x)",
623 (unsigned)((device_id
>> 1) & 0x7ff),
624 (unsigned)((device_id
>> 12) & 0xffff),
625 (unsigned)((device_id
>> 28) & 0xf));
627 if (((device_id
>> 1) & 0x7ff) != PIC32MX_MANUF_ID
) {
628 LOG_WARNING("Cannot identify target as a PIC32MX family.");
629 return ERROR_FLASH_OPERATION_FAILED
;
634 if (Virt2Phys(bank
->base
) == PIC32MX_PHYS_BOOT_FLASH
)
636 /* 0x1FC00000: Boot flash size */
638 /* for some reason this register returns 8k for the boot bank size
639 * this does not match the docs, so for now set the boot bank at a
641 if (target_read_u32(target
, PIC32MX_BMXBOOTSZ
, &num_pages
) != ERROR_OK
) {
642 LOG_WARNING("PIC32MX flash size failed, probe inaccurate - assuming 12k flash");
643 num_pages
= (12 * 1024);
646 /* fixed 12k boot bank - see comments above */
647 num_pages
= (12 * 1024);
652 /* read the flash size from the device */
653 if (target_read_u32(target
, PIC32MX_BMXPFMSZ
, &num_pages
) != ERROR_OK
) {
654 LOG_WARNING("PIC32MX flash size failed, probe inaccurate - assuming 512k flash");
655 num_pages
= (512 * 1024);
659 LOG_INFO("flash size = %" PRId32
"kbytes", num_pages
/ 1024);
664 bank
->sectors
= NULL
;
667 /* calculate numbers of pages */
668 num_pages
/= page_size
;
669 bank
->size
= (num_pages
* page_size
);
670 bank
->num_sectors
= num_pages
;
671 bank
->sectors
= malloc(sizeof(struct flash_sector
) * num_pages
);
673 for (i
= 0; i
< (int)num_pages
; i
++)
675 bank
->sectors
[i
].offset
= i
* page_size
;
676 bank
->sectors
[i
].size
= page_size
;
677 bank
->sectors
[i
].is_erased
= -1;
678 bank
->sectors
[i
].is_protected
= 1;
681 pic32mx_info
->probed
= 1;
686 static int pic32mx_auto_probe(struct flash_bank
*bank
)
688 struct pic32mx_flash_bank
*pic32mx_info
= bank
->driver_priv
;
689 if (pic32mx_info
->probed
)
691 return pic32mx_probe(bank
);
694 static int pic32mx_info(struct flash_bank
*bank
, char *buf
, int buf_size
)
696 struct target
*target
= bank
->target
;
697 struct mips32_common
*mips32
= target
->arch_info
;
698 struct mips_ejtag
*ejtag_info
= &mips32
->ejtag_info
;
702 device_id
= ejtag_info
->idcode
;
704 if (((device_id
>> 1) & 0x7ff) != PIC32MX_MANUF_ID
) {
705 snprintf(buf
, buf_size
,
706 "Cannot identify target as a PIC32MX family (manufacturer 0x%03d != 0x%03d)\n",
707 (unsigned)((device_id
>> 1) & 0x7ff),
709 return ERROR_FLASH_OPERATION_FAILED
;
712 for (i
= 0; pic32mx_devs
[i
].name
!= NULL
; i
++)
714 if (pic32mx_devs
[i
].devid
== (device_id
& 0x0fffffff)) {
715 printed
= snprintf(buf
, buf_size
, "PIC32MX%s", pic32mx_devs
[i
].name
);
720 if (pic32mx_devs
[i
].name
== NULL
) {
721 printed
= snprintf(buf
, buf_size
, "Unknown");
726 snprintf(buf
, buf_size
, " Ver: 0x%02x",
727 (unsigned)((device_id
>> 28) & 0xf));
732 COMMAND_HANDLER(pic32mx_handle_pgm_word_command
)
734 uint32_t address
, value
;
739 return ERROR_COMMAND_SYNTAX_ERROR
;
742 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], address
);
743 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], value
);
745 struct flash_bank
*bank
;
746 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 2, &bank
);
747 if (ERROR_OK
!= retval
)
750 if (address
< bank
->base
|| address
>= (bank
->base
+ bank
->size
))
752 command_print(CMD_CTX
, "flash address '%s' is out of bounds", CMD_ARGV
[0]);
757 status
= pic32mx_write_word(bank
, address
, value
);
758 if (status
& NVMCON_NVMERR
)
759 res
= ERROR_FLASH_OPERATION_FAILED
;
760 if (status
& NVMCON_LVDERR
)
761 res
= ERROR_FLASH_OPERATION_FAILED
;
764 command_print(CMD_CTX
, "pic32mx pgm word complete");
766 command_print(CMD_CTX
, "pic32mx pgm word failed (status = 0x%x)", status
);
771 COMMAND_HANDLER(pic32mx_handle_unlock_command
)
774 struct target
*target
= NULL
;
775 struct mips_m4k_common
*mips_m4k
;
776 struct mips_ejtag
*ejtag_info
;
781 command_print(CMD_CTX
, "pic32mx unlock <bank>");
782 return ERROR_COMMAND_SYNTAX_ERROR
;
785 struct flash_bank
*bank
;
786 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
787 if (ERROR_OK
!= retval
)
790 target
= bank
->target
;
791 mips_m4k
= target_to_m4k(target
);
792 ejtag_info
= &mips_m4k
->mips32
.ejtag_info
;
794 /* we have to use the MTAP to perform a full erase */
795 mips_ejtag_set_instr(ejtag_info
, MTAP_SW_MTAP
);
796 mips_ejtag_set_instr(ejtag_info
, MTAP_COMMAND
);
798 /* first check status of device */
799 mchip_cmd
= MCHP_STATUS
;
800 mips_ejtag_drscan_8(ejtag_info
, &mchip_cmd
);
801 if (mchip_cmd
& (1 << 7))
803 /* device is not locked */
804 command_print(CMD_CTX
, "pic32mx is already unlocked, erasing anyway");
807 /* unlock/erase device */
808 mips_ejtag_drscan_8_out(ejtag_info
, MCHP_ASERT_RST
);
810 mips_ejtag_drscan_8_out(ejtag_info
, MCHP_ERASE
);
813 mchip_cmd
= MCHP_STATUS
;
814 mips_ejtag_drscan_8(ejtag_info
, &mchip_cmd
);
817 LOG_DEBUG("timeout waiting for unlock: 0x%" PRIx32
"", mchip_cmd
);
821 } while ((mchip_cmd
& (1 << 2)) || (!(mchip_cmd
& (1 << 3))));
823 mips_ejtag_drscan_8_out(ejtag_info
, MCHP_DE_ASSERT_RST
);
825 /* select ejtag tap */
826 mips_ejtag_set_instr(ejtag_info
, MTAP_SW_ETAP
);
828 command_print(CMD_CTX
, "pic32mx unlocked.\n"
829 "INFO: a reset or power cycle is required "
830 "for the new settings to take effect.");
835 static const struct command_registration pic32mx_exec_command_handlers
[] = {
838 .usage
= "<addr> <value> <bank>",
839 .handler
= pic32mx_handle_pgm_word_command
,
840 .mode
= COMMAND_EXEC
,
841 .help
= "program a word",
845 .handler
= pic32mx_handle_unlock_command
,
846 .mode
= COMMAND_EXEC
,
847 .usage
= "[bank_id]",
848 .help
= "Unlock/Erase entire device.",
850 COMMAND_REGISTRATION_DONE
853 static const struct command_registration pic32mx_command_handlers
[] = {
857 .help
= "pic32mx flash command group",
859 .chain
= pic32mx_exec_command_handlers
,
861 COMMAND_REGISTRATION_DONE
864 struct flash_driver pic32mx_flash
= {
866 .commands
= pic32mx_command_handlers
,
867 .flash_bank_command
= pic32mx_flash_bank_command
,
868 .erase
= pic32mx_erase
,
869 .protect
= pic32mx_protect
,
870 .write
= pic32mx_write
,
871 .read
= default_flash_read
,
872 .probe
= pic32mx_probe
,
873 .auto_probe
= pic32mx_auto_probe
,
874 .erase_check
= default_flash_mem_blank_check
,
875 .protect_check
= pic32mx_protect_check
,
876 .info
= pic32mx_info
,
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