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 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
29 #include <helper/binarybuffer.h>
30 #include <target/algorithm.h>
31 #include <target/armv7m.h>
34 static int stm32x_mass_erase(struct flash_bank
*bank
);
36 /* flash bank stm32x <base> <size> 0 0 <target#>
38 FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command
)
40 struct stm32x_flash_bank
*stm32x_info
;
44 LOG_WARNING("incomplete flash_bank stm32x configuration");
45 return ERROR_FLASH_BANK_INVALID
;
48 stm32x_info
= malloc(sizeof(struct stm32x_flash_bank
));
49 bank
->driver_priv
= stm32x_info
;
51 stm32x_info
->write_algorithm
= NULL
;
52 stm32x_info
->probed
= 0;
57 static uint32_t stm32x_get_flash_status(struct flash_bank
*bank
)
59 struct target
*target
= bank
->target
;
62 target_read_u32(target
, STM32_FLASH_SR
, &status
);
67 static uint32_t stm32x_wait_status_busy(struct flash_bank
*bank
, int timeout
)
69 struct target
*target
= bank
->target
;
72 /* wait for busy to clear */
73 while (((status
= stm32x_get_flash_status(bank
)) & FLASH_BSY
) && (timeout
-- > 0))
75 LOG_DEBUG("status: 0x%" PRIx32
"", status
);
78 /* Clear but report errors */
79 if (status
& (FLASH_WRPRTERR
| FLASH_PGERR
))
81 target_write_u32(target
, STM32_FLASH_SR
, FLASH_WRPRTERR
| FLASH_PGERR
);
86 static int stm32x_read_options(struct flash_bank
*bank
)
89 struct stm32x_flash_bank
*stm32x_info
= NULL
;
90 struct target
*target
= bank
->target
;
92 stm32x_info
= bank
->driver_priv
;
94 /* read current option bytes */
95 target_read_u32(target
, STM32_FLASH_OBR
, &optiondata
);
97 stm32x_info
->option_bytes
.user_options
= (uint16_t)0xFFF8 | ((optiondata
>> 2) & 0x07);
98 stm32x_info
->option_bytes
.RDP
= (optiondata
& (1 << OPT_READOUT
)) ? 0xFFFF : 0x5AA5;
100 if (optiondata
& (1 << OPT_READOUT
))
101 LOG_INFO("Device Security Bit Set");
103 /* each bit refers to a 4bank protection */
104 target_read_u32(target
, STM32_FLASH_WRPR
, &optiondata
);
106 stm32x_info
->option_bytes
.protection
[0] = (uint16_t)optiondata
;
107 stm32x_info
->option_bytes
.protection
[1] = (uint16_t)(optiondata
>> 8);
108 stm32x_info
->option_bytes
.protection
[2] = (uint16_t)(optiondata
>> 16);
109 stm32x_info
->option_bytes
.protection
[3] = (uint16_t)(optiondata
>> 24);
114 static int stm32x_erase_options(struct flash_bank
*bank
)
116 struct stm32x_flash_bank
*stm32x_info
= NULL
;
117 struct target
*target
= bank
->target
;
120 stm32x_info
= bank
->driver_priv
;
122 /* read current options */
123 stm32x_read_options(bank
);
125 /* unlock flash registers */
126 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
127 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
129 /* unlock option flash registers */
130 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY1
);
131 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY2
);
133 /* erase option bytes */
134 target_write_u32(target
, STM32_FLASH_CR
, FLASH_OPTER
| FLASH_OPTWRE
);
135 target_write_u32(target
, STM32_FLASH_CR
, FLASH_OPTER
| FLASH_STRT
| FLASH_OPTWRE
);
137 status
= stm32x_wait_status_busy(bank
, 10);
139 if (status
& FLASH_WRPRTERR
)
140 return ERROR_FLASH_OPERATION_FAILED
;
141 if (status
& FLASH_PGERR
)
142 return ERROR_FLASH_OPERATION_FAILED
;
144 /* clear readout protection and complementary option bytes
145 * this will also force a device unlock if set */
146 stm32x_info
->option_bytes
.RDP
= 0x5AA5;
151 static int stm32x_write_options(struct flash_bank
*bank
)
153 struct stm32x_flash_bank
*stm32x_info
= NULL
;
154 struct target
*target
= bank
->target
;
157 stm32x_info
= bank
->driver_priv
;
159 /* unlock flash registers */
160 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
161 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
163 /* unlock option flash registers */
164 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY1
);
165 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY2
);
167 /* program option bytes */
168 target_write_u32(target
, STM32_FLASH_CR
, FLASH_OPTPG
| FLASH_OPTWRE
);
170 /* write user option byte */
171 target_write_u16(target
, STM32_OB_USER
, stm32x_info
->option_bytes
.user_options
);
173 status
= stm32x_wait_status_busy(bank
, 10);
175 if (status
& FLASH_WRPRTERR
)
176 return ERROR_FLASH_OPERATION_FAILED
;
177 if (status
& FLASH_PGERR
)
178 return ERROR_FLASH_OPERATION_FAILED
;
180 /* write protection byte 1 */
181 target_write_u16(target
, STM32_OB_WRP0
, stm32x_info
->option_bytes
.protection
[0]);
183 status
= stm32x_wait_status_busy(bank
, 10);
185 if (status
& FLASH_WRPRTERR
)
186 return ERROR_FLASH_OPERATION_FAILED
;
187 if (status
& FLASH_PGERR
)
188 return ERROR_FLASH_OPERATION_FAILED
;
190 /* write protection byte 2 */
191 target_write_u16(target
, STM32_OB_WRP1
, stm32x_info
->option_bytes
.protection
[1]);
193 status
= stm32x_wait_status_busy(bank
, 10);
195 if (status
& FLASH_WRPRTERR
)
196 return ERROR_FLASH_OPERATION_FAILED
;
197 if (status
& FLASH_PGERR
)
198 return ERROR_FLASH_OPERATION_FAILED
;
200 /* write protection byte 3 */
201 target_write_u16(target
, STM32_OB_WRP2
, stm32x_info
->option_bytes
.protection
[2]);
203 status
= stm32x_wait_status_busy(bank
, 10);
205 if (status
& FLASH_WRPRTERR
)
206 return ERROR_FLASH_OPERATION_FAILED
;
207 if (status
& FLASH_PGERR
)
208 return ERROR_FLASH_OPERATION_FAILED
;
210 /* write protection byte 4 */
211 target_write_u16(target
, STM32_OB_WRP3
, stm32x_info
->option_bytes
.protection
[3]);
213 status
= stm32x_wait_status_busy(bank
, 10);
215 if (status
& FLASH_WRPRTERR
)
216 return ERROR_FLASH_OPERATION_FAILED
;
217 if (status
& FLASH_PGERR
)
218 return ERROR_FLASH_OPERATION_FAILED
;
220 /* write readout protection bit */
221 target_write_u16(target
, STM32_OB_RDP
, stm32x_info
->option_bytes
.RDP
);
223 status
= stm32x_wait_status_busy(bank
, 10);
225 if (status
& FLASH_WRPRTERR
)
226 return ERROR_FLASH_OPERATION_FAILED
;
227 if (status
& FLASH_PGERR
)
228 return ERROR_FLASH_OPERATION_FAILED
;
230 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
235 static int stm32x_protect_check(struct flash_bank
*bank
)
237 struct target
*target
= bank
->target
;
238 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
245 if (target
->state
!= TARGET_HALTED
)
247 LOG_ERROR("Target not halted");
248 return ERROR_TARGET_NOT_HALTED
;
251 /* medium density - each bit refers to a 4bank protection
252 * high density - each bit refers to a 2bank protection */
253 target_read_u32(target
, STM32_FLASH_WRPR
, &protection
);
255 /* medium density - each protection bit is for 4 * 1K pages
256 * high density - each protection bit is for 2 * 2K pages */
257 num_bits
= (bank
->num_sectors
/ stm32x_info
->ppage_size
);
259 if (stm32x_info
->ppage_size
== 2)
261 /* high density flash/connectivity line protection */
265 if (protection
& (1 << 31))
268 /* bit 31 controls sector 62 - 255 protection for high density
269 * bit 31 controls sector 62 - 127 protection for connectivity line */
270 for (s
= 62; s
< bank
->num_sectors
; s
++)
272 bank
->sectors
[s
].is_protected
= set
;
275 if (bank
->num_sectors
> 61)
278 for (i
= 0; i
< num_bits
; i
++)
282 if (protection
& (1 << i
))
285 for (s
= 0; s
< stm32x_info
->ppage_size
; s
++)
286 bank
->sectors
[(i
* stm32x_info
->ppage_size
) + s
].is_protected
= set
;
291 /* low/medium density flash protection */
292 for (i
= 0; i
< num_bits
; i
++)
296 if (protection
& (1 << i
))
299 for (s
= 0; s
< stm32x_info
->ppage_size
; s
++)
300 bank
->sectors
[(i
* stm32x_info
->ppage_size
) + s
].is_protected
= set
;
307 static int stm32x_erase(struct flash_bank
*bank
, int first
, int last
)
309 struct target
*target
= bank
->target
;
313 if (bank
->target
->state
!= TARGET_HALTED
)
315 LOG_ERROR("Target not halted");
316 return ERROR_TARGET_NOT_HALTED
;
319 if ((first
== 0) && (last
== (bank
->num_sectors
- 1)))
321 return stm32x_mass_erase(bank
);
324 /* unlock flash registers */
325 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
326 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
328 for (i
= first
; i
<= last
; i
++)
330 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PER
);
331 target_write_u32(target
, STM32_FLASH_AR
, bank
->base
+ bank
->sectors
[i
].offset
);
332 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PER
| FLASH_STRT
);
334 status
= stm32x_wait_status_busy(bank
, 100);
336 if (status
& FLASH_WRPRTERR
)
337 return ERROR_FLASH_OPERATION_FAILED
;
338 if (status
& FLASH_PGERR
)
339 return ERROR_FLASH_OPERATION_FAILED
;
340 bank
->sectors
[i
].is_erased
= 1;
343 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
348 static int stm32x_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
350 struct stm32x_flash_bank
*stm32x_info
= NULL
;
351 struct target
*target
= bank
->target
;
352 uint16_t prot_reg
[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
357 stm32x_info
= bank
->driver_priv
;
359 if (target
->state
!= TARGET_HALTED
)
361 LOG_ERROR("Target not halted");
362 return ERROR_TARGET_NOT_HALTED
;
365 if ((first
&& (first
% stm32x_info
->ppage_size
)) || ((last
+ 1) &&
366 (last
+ 1) % stm32x_info
->ppage_size
))
368 LOG_WARNING("Error: start and end sectors must be on a %d sector boundary",
369 stm32x_info
->ppage_size
);
370 return ERROR_FLASH_SECTOR_INVALID
;
373 /* medium density - each bit refers to a 4bank protection
374 * high density - each bit refers to a 2bank protection */
375 target_read_u32(target
, STM32_FLASH_WRPR
, &protection
);
377 prot_reg
[0] = (uint16_t)protection
;
378 prot_reg
[1] = (uint16_t)(protection
>> 8);
379 prot_reg
[2] = (uint16_t)(protection
>> 16);
380 prot_reg
[3] = (uint16_t)(protection
>> 24);
382 if (stm32x_info
->ppage_size
== 2)
384 /* high density flash */
386 /* bit 7 controls sector 62 - 255 protection */
390 prot_reg
[3] &= ~(1 << 7);
392 prot_reg
[3] |= (1 << 7);
400 for (i
= first
; i
<= last
; i
++)
402 reg
= (i
/ stm32x_info
->ppage_size
) / 8;
403 bit
= (i
/ stm32x_info
->ppage_size
) - (reg
* 8);
406 prot_reg
[reg
] &= ~(1 << bit
);
408 prot_reg
[reg
] |= (1 << bit
);
413 /* medium density flash */
414 for (i
= first
; i
<= last
; i
++)
416 reg
= (i
/ stm32x_info
->ppage_size
) / 8;
417 bit
= (i
/ stm32x_info
->ppage_size
) - (reg
* 8);
420 prot_reg
[reg
] &= ~(1 << bit
);
422 prot_reg
[reg
] |= (1 << bit
);
426 if ((status
= stm32x_erase_options(bank
)) != ERROR_OK
)
429 stm32x_info
->option_bytes
.protection
[0] = prot_reg
[0];
430 stm32x_info
->option_bytes
.protection
[1] = prot_reg
[1];
431 stm32x_info
->option_bytes
.protection
[2] = prot_reg
[2];
432 stm32x_info
->option_bytes
.protection
[3] = prot_reg
[3];
434 return stm32x_write_options(bank
);
437 static int stm32x_write_block(struct flash_bank
*bank
, uint8_t *buffer
,
438 uint32_t offset
, uint32_t count
)
440 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
441 struct target
*target
= bank
->target
;
442 uint32_t buffer_size
= 16384;
443 struct working_area
*source
;
444 uint32_t address
= bank
->base
+ offset
;
445 struct reg_param reg_params
[4];
446 struct armv7m_algorithm armv7m_info
;
447 int retval
= ERROR_OK
;
449 /* see contib/loaders/flash/stm32x.s for src */
451 static const uint8_t stm32x_flash_write_code
[] = {
453 0xDF, 0xF8, 0x24, 0x40, /* ldr r4, STM32_FLASH_CR */
454 0x09, 0x4D, /* ldr r5, STM32_FLASH_SR */
455 0x4F, 0xF0, 0x01, 0x03, /* mov r3, #1 */
456 0x23, 0x60, /* str r3, [r4, #0] */
457 0x30, 0xF8, 0x02, 0x3B, /* ldrh r3, [r0], #2 */
458 0x21, 0xF8, 0x02, 0x3B, /* strh r3, [r1], #2 */
460 0x2B, 0x68, /* ldr r3, [r5, #0] */
461 0x13, 0xF0, 0x01, 0x0F, /* tst r3, #0x01 */
462 0xFB, 0xD0, /* beq busy */
463 0x13, 0xF0, 0x14, 0x0F, /* tst r3, #0x14 */
464 0x01, 0xD1, /* bne exit */
465 0x01, 0x3A, /* subs r2, r2, #1 */
466 0xED, 0xD1, /* bne write */
468 0x00, 0xBE, /* bkpt #0 */
469 0x10, 0x20, 0x02, 0x40, /* STM32_FLASH_CR: .word 0x40022010 */
470 0x0C, 0x20, 0x02, 0x40 /* STM32_FLASH_SR: .word 0x4002200C */
473 /* flash write code */
474 if (target_alloc_working_area(target
, sizeof(stm32x_flash_write_code
),
475 &stm32x_info
->write_algorithm
) != ERROR_OK
)
477 LOG_WARNING("no working area available, can't do block memory writes");
478 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
481 if ((retval
= target_write_buffer(target
, stm32x_info
->write_algorithm
->address
,
482 sizeof(stm32x_flash_write_code
),
483 (uint8_t*)stm32x_flash_write_code
)) != ERROR_OK
)
487 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
)
490 if (buffer_size
<= 256)
492 /* if we already allocated the writing code, but failed to get a
493 * buffer, free the algorithm */
494 if (stm32x_info
->write_algorithm
)
495 target_free_working_area(target
, stm32x_info
->write_algorithm
);
497 LOG_WARNING("no large enough working area available, can't do block memory writes");
498 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
502 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
503 armv7m_info
.core_mode
= ARMV7M_MODE_ANY
;
505 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
506 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
507 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
508 init_reg_param(®_params
[3], "r3", 32, PARAM_IN
);
512 uint32_t thisrun_count
= (count
> (buffer_size
/ 2)) ?
513 (buffer_size
/ 2) : count
;
515 if ((retval
= target_write_buffer(target
, source
->address
,
516 thisrun_count
* 2, buffer
)) != ERROR_OK
)
519 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
520 buf_set_u32(reg_params
[1].value
, 0, 32, address
);
521 buf_set_u32(reg_params
[2].value
, 0, 32, thisrun_count
);
523 if ((retval
= target_run_algorithm(target
, 0, NULL
, 4, reg_params
,
524 stm32x_info
->write_algorithm
->address
,
526 10000, &armv7m_info
)) != ERROR_OK
)
528 LOG_ERROR("error executing stm32x flash write algorithm");
529 retval
= ERROR_FLASH_OPERATION_FAILED
;
533 if (buf_get_u32(reg_params
[3].value
, 0, 32) & FLASH_PGERR
)
535 LOG_ERROR("flash memory not erased before writing");
536 /* Clear but report errors */
537 target_write_u32(target
, STM32_FLASH_SR
, FLASH_PGERR
);
538 retval
= ERROR_FLASH_OPERATION_FAILED
;
542 if (buf_get_u32(reg_params
[3].value
, 0, 32) & FLASH_WRPRTERR
)
544 LOG_ERROR("flash memory write protected");
545 /* Clear but report errors */
546 target_write_u32(target
, STM32_FLASH_SR
, FLASH_WRPRTERR
);
547 retval
= ERROR_FLASH_OPERATION_FAILED
;
551 buffer
+= thisrun_count
* 2;
552 address
+= thisrun_count
* 2;
553 count
-= thisrun_count
;
556 target_free_working_area(target
, source
);
557 target_free_working_area(target
, stm32x_info
->write_algorithm
);
559 destroy_reg_param(®_params
[0]);
560 destroy_reg_param(®_params
[1]);
561 destroy_reg_param(®_params
[2]);
562 destroy_reg_param(®_params
[3]);
567 static int stm32x_write(struct flash_bank
*bank
, uint8_t *buffer
,
568 uint32_t offset
, uint32_t count
)
570 struct target
*target
= bank
->target
;
571 uint32_t words_remaining
= (count
/ 2);
572 uint32_t bytes_remaining
= (count
& 0x00000001);
573 uint32_t address
= bank
->base
+ offset
;
574 uint32_t bytes_written
= 0;
578 if (bank
->target
->state
!= TARGET_HALTED
)
580 LOG_ERROR("Target not halted");
581 return ERROR_TARGET_NOT_HALTED
;
586 LOG_WARNING("offset 0x%" PRIx32
" breaks required 2-byte alignment", offset
);
587 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
590 /* unlock flash registers */
591 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
592 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
594 /* multiple half words (2-byte) to be programmed? */
595 if (words_remaining
> 0)
597 /* try using a block write */
598 if ((retval
= stm32x_write_block(bank
, buffer
, offset
, words_remaining
)) != ERROR_OK
)
600 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
602 /* if block write failed (no sufficient working area),
603 * we use normal (slow) single dword accesses */
604 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
606 else if (retval
== ERROR_FLASH_OPERATION_FAILED
)
608 LOG_ERROR("flash writing failed with error code: 0x%x", retval
);
609 return ERROR_FLASH_OPERATION_FAILED
;
614 buffer
+= words_remaining
* 2;
615 address
+= words_remaining
* 2;
620 while (words_remaining
> 0)
623 memcpy(&value
, buffer
+ bytes_written
, sizeof(uint16_t));
625 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PG
);
626 target_write_u16(target
, address
, value
);
628 status
= stm32x_wait_status_busy(bank
, 5);
630 if (status
& FLASH_WRPRTERR
)
632 LOG_ERROR("flash memory not erased before writing");
633 return ERROR_FLASH_OPERATION_FAILED
;
635 if (status
& FLASH_PGERR
)
637 LOG_ERROR("flash memory write protected");
638 return ERROR_FLASH_OPERATION_FAILED
;
648 uint16_t value
= 0xffff;
649 memcpy(&value
, buffer
+ bytes_written
, bytes_remaining
);
651 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PG
);
652 target_write_u16(target
, address
, value
);
654 status
= stm32x_wait_status_busy(bank
, 5);
656 if (status
& FLASH_WRPRTERR
)
658 LOG_ERROR("flash memory not erased before writing");
659 return ERROR_FLASH_OPERATION_FAILED
;
661 if (status
& FLASH_PGERR
)
663 LOG_ERROR("flash memory write protected");
664 return ERROR_FLASH_OPERATION_FAILED
;
668 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
673 static int stm32x_probe(struct flash_bank
*bank
)
675 struct target
*target
= bank
->target
;
676 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
682 stm32x_info
->probed
= 0;
684 /* read stm32 device id register */
685 target_read_u32(target
, 0xE0042000, &device_id
);
686 LOG_INFO("device id = 0x%08" PRIx32
"", device_id
);
688 /* get flash size from target */
689 if (target_read_u16(target
, 0x1FFFF7E0, &num_pages
) != ERROR_OK
)
691 /* failed reading flash size, default to max target family */
695 if ((device_id
& 0x7ff) == 0x410)
697 /* medium density - we have 1k pages
698 * 4 pages for a protection area */
700 stm32x_info
->ppage_size
= 4;
702 /* check for early silicon */
703 if (num_pages
== 0xffff)
705 /* number of sectors incorrect on revA */
706 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
710 else if ((device_id
& 0x7ff) == 0x412)
712 /* low density - we have 1k pages
713 * 4 pages for a protection area */
715 stm32x_info
->ppage_size
= 4;
717 /* check for early silicon */
718 if (num_pages
== 0xffff)
720 /* number of sectors incorrect on revA */
721 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 32k flash");
725 else if ((device_id
& 0x7ff) == 0x414)
727 /* high density - we have 2k pages
728 * 2 pages for a protection area */
730 stm32x_info
->ppage_size
= 2;
732 /* check for early silicon */
733 if (num_pages
== 0xffff)
735 /* number of sectors incorrect on revZ */
736 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 512k flash");
740 else if ((device_id
& 0x7ff) == 0x418)
742 /* connectivity line density - we have 2k pages
743 * 2 pages for a protection area */
745 stm32x_info
->ppage_size
= 2;
747 /* check for early silicon */
748 if (num_pages
== 0xffff)
750 /* number of sectors incorrect on revZ */
751 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 256k flash");
755 else if ((device_id
& 0x7ff) == 0x420)
757 /* value line density - we have 1k pages
758 * 4 pages for a protection area */
760 stm32x_info
->ppage_size
= 4;
762 /* check for early silicon */
763 if (num_pages
== 0xffff)
765 /* number of sectors may be incorrrect on early silicon */
766 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
772 LOG_WARNING("Cannot identify target as a STM32 family.");
773 return ERROR_FLASH_OPERATION_FAILED
;
776 LOG_INFO("flash size = %dkbytes", num_pages
);
778 /* calculate numbers of pages */
779 num_pages
/= (page_size
/ 1024);
784 bank
->sectors
= NULL
;
787 bank
->base
= 0x08000000;
788 bank
->size
= (num_pages
* page_size
);
789 bank
->num_sectors
= num_pages
;
790 bank
->sectors
= malloc(sizeof(struct flash_sector
) * num_pages
);
792 for (i
= 0; i
< num_pages
; i
++)
794 bank
->sectors
[i
].offset
= i
* page_size
;
795 bank
->sectors
[i
].size
= page_size
;
796 bank
->sectors
[i
].is_erased
= -1;
797 bank
->sectors
[i
].is_protected
= 1;
800 stm32x_info
->probed
= 1;
805 static int stm32x_auto_probe(struct flash_bank
*bank
)
807 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
808 if (stm32x_info
->probed
)
810 return stm32x_probe(bank
);
814 COMMAND_HANDLER(stm32x_handle_part_id_command
)
820 static int get_stm32x_info(struct flash_bank
*bank
, char *buf
, int buf_size
)
822 struct target
*target
= bank
->target
;
826 /* read stm32 device id register */
827 target_read_u32(target
, 0xE0042000, &device_id
);
829 if ((device_id
& 0x7ff) == 0x410)
831 printed
= snprintf(buf
, buf_size
, "stm32x (Medium Density) - Rev: ");
835 switch (device_id
>> 16)
838 snprintf(buf
, buf_size
, "A");
842 snprintf(buf
, buf_size
, "B");
846 snprintf(buf
, buf_size
, "Z");
850 snprintf(buf
, buf_size
, "Y");
854 snprintf(buf
, buf_size
, "unknown");
858 else if ((device_id
& 0x7ff) == 0x412)
860 printed
= snprintf(buf
, buf_size
, "stm32x (Low Density) - Rev: ");
864 switch (device_id
>> 16)
867 snprintf(buf
, buf_size
, "A");
871 snprintf(buf
, buf_size
, "unknown");
875 else if ((device_id
& 0x7ff) == 0x414)
877 printed
= snprintf(buf
, buf_size
, "stm32x (High Density) - Rev: ");
881 switch (device_id
>> 16)
884 snprintf(buf
, buf_size
, "A");
888 snprintf(buf
, buf_size
, "Z");
892 snprintf(buf
, buf_size
, "unknown");
896 else if ((device_id
& 0x7ff) == 0x418)
898 printed
= snprintf(buf
, buf_size
, "stm32x (Connectivity) - Rev: ");
902 switch (device_id
>> 16)
905 snprintf(buf
, buf_size
, "A");
909 snprintf(buf
, buf_size
, "Z");
913 snprintf(buf
, buf_size
, "unknown");
917 else if ((device_id
& 0x7ff) == 0x420)
919 printed
= snprintf(buf
, buf_size
, "stm32x (Value) - Rev: ");
923 switch (device_id
>> 16)
926 snprintf(buf
, buf_size
, "A");
930 snprintf(buf
, buf_size
, "Z");
934 snprintf(buf
, buf_size
, "unknown");
940 snprintf(buf
, buf_size
, "Cannot identify target as a stm32x\n");
941 return ERROR_FLASH_OPERATION_FAILED
;
947 COMMAND_HANDLER(stm32x_handle_lock_command
)
949 struct target
*target
= NULL
;
950 struct stm32x_flash_bank
*stm32x_info
= NULL
;
954 command_print(CMD_CTX
, "stm32x lock <bank>");
958 struct flash_bank
*bank
;
959 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
960 if (ERROR_OK
!= retval
)
963 stm32x_info
= bank
->driver_priv
;
965 target
= bank
->target
;
967 if (target
->state
!= TARGET_HALTED
)
969 LOG_ERROR("Target not halted");
970 return ERROR_TARGET_NOT_HALTED
;
973 if (stm32x_erase_options(bank
) != ERROR_OK
)
975 command_print(CMD_CTX
, "stm32x failed to erase options");
979 /* set readout protection */
980 stm32x_info
->option_bytes
.RDP
= 0;
982 if (stm32x_write_options(bank
) != ERROR_OK
)
984 command_print(CMD_CTX
, "stm32x failed to lock device");
988 command_print(CMD_CTX
, "stm32x locked");
993 COMMAND_HANDLER(stm32x_handle_unlock_command
)
995 struct target
*target
= NULL
;
996 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1000 command_print(CMD_CTX
, "stm32x unlock <bank>");
1004 struct flash_bank
*bank
;
1005 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1006 if (ERROR_OK
!= retval
)
1009 stm32x_info
= bank
->driver_priv
;
1011 target
= bank
->target
;
1013 if (target
->state
!= TARGET_HALTED
)
1015 LOG_ERROR("Target not halted");
1016 return ERROR_TARGET_NOT_HALTED
;
1019 if (stm32x_erase_options(bank
) != ERROR_OK
)
1021 command_print(CMD_CTX
, "stm32x failed to unlock device");
1025 if (stm32x_write_options(bank
) != ERROR_OK
)
1027 command_print(CMD_CTX
, "stm32x failed to lock device");
1031 command_print(CMD_CTX
, "stm32x unlocked.\n"
1032 "INFO: a reset or power cycle is required "
1033 "for the new settings to take effect.");
1038 COMMAND_HANDLER(stm32x_handle_options_read_command
)
1040 uint32_t optionbyte
;
1041 struct target
*target
= NULL
;
1042 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1046 command_print(CMD_CTX
, "stm32x options_read <bank>");
1050 struct flash_bank
*bank
;
1051 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1052 if (ERROR_OK
!= retval
)
1055 stm32x_info
= bank
->driver_priv
;
1057 target
= bank
->target
;
1059 if (target
->state
!= TARGET_HALTED
)
1061 LOG_ERROR("Target not halted");
1062 return ERROR_TARGET_NOT_HALTED
;
1065 target_read_u32(target
, STM32_FLASH_OBR
, &optionbyte
);
1066 command_print(CMD_CTX
, "Option Byte: 0x%" PRIx32
"", optionbyte
);
1068 if (buf_get_u32((uint8_t*)&optionbyte
, OPT_ERROR
, 1))
1069 command_print(CMD_CTX
, "Option Byte Complement Error");
1071 if (buf_get_u32((uint8_t*)&optionbyte
, OPT_READOUT
, 1))
1072 command_print(CMD_CTX
, "Readout Protection On");
1074 command_print(CMD_CTX
, "Readout Protection Off");
1076 if (buf_get_u32((uint8_t*)&optionbyte
, OPT_RDWDGSW
, 1))
1077 command_print(CMD_CTX
, "Software Watchdog");
1079 command_print(CMD_CTX
, "Hardware Watchdog");
1081 if (buf_get_u32((uint8_t*)&optionbyte
, OPT_RDRSTSTOP
, 1))
1082 command_print(CMD_CTX
, "Stop: No reset generated");
1084 command_print(CMD_CTX
, "Stop: Reset generated");
1086 if (buf_get_u32((uint8_t*)&optionbyte
, OPT_RDRSTSTDBY
, 1))
1087 command_print(CMD_CTX
, "Standby: No reset generated");
1089 command_print(CMD_CTX
, "Standby: Reset generated");
1094 COMMAND_HANDLER(stm32x_handle_options_write_command
)
1096 struct target
*target
= NULL
;
1097 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1098 uint16_t optionbyte
= 0xF8;
1102 command_print(CMD_CTX
, "stm32x options_write <bank> <SWWDG | HWWDG> <RSTSTNDBY | NORSTSTNDBY> <RSTSTOP | NORSTSTOP>");
1106 struct flash_bank
*bank
;
1107 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1108 if (ERROR_OK
!= retval
)
1111 stm32x_info
= bank
->driver_priv
;
1113 target
= bank
->target
;
1115 if (target
->state
!= TARGET_HALTED
)
1117 LOG_ERROR("Target not halted");
1118 return ERROR_TARGET_NOT_HALTED
;
1121 /* REVISIT: ignores some options which we will display...
1122 * and doesn't insist on the specified syntax.
1126 if (strcmp(CMD_ARGV
[1], "SWWDG") == 0)
1128 optionbyte
|= (1 << 0);
1130 else /* REVISIT must be "HWWDG" then ... */
1132 optionbyte
&= ~(1 << 0);
1135 /* OPT_RDRSTSTDBY */
1136 if (strcmp(CMD_ARGV
[2], "NORSTSTNDBY") == 0)
1138 optionbyte
|= (1 << 1);
1140 else /* REVISIT must be "RSTSTNDBY" then ... */
1142 optionbyte
&= ~(1 << 1);
1146 if (strcmp(CMD_ARGV
[3], "NORSTSTOP") == 0)
1148 optionbyte
|= (1 << 2);
1150 else /* REVISIT must be "RSTSTOP" then ... */
1152 optionbyte
&= ~(1 << 2);
1155 if (stm32x_erase_options(bank
) != ERROR_OK
)
1157 command_print(CMD_CTX
, "stm32x failed to erase options");
1161 stm32x_info
->option_bytes
.user_options
= optionbyte
;
1163 if (stm32x_write_options(bank
) != ERROR_OK
)
1165 command_print(CMD_CTX
, "stm32x failed to write options");
1169 command_print(CMD_CTX
, "stm32x write options complete.\n"
1170 "INFO: a reset or power cycle is required "
1171 "for the new settings to take effect.");
1176 static int stm32x_mass_erase(struct flash_bank
*bank
)
1178 struct target
*target
= bank
->target
;
1181 if (target
->state
!= TARGET_HALTED
)
1183 LOG_ERROR("Target not halted");
1184 return ERROR_TARGET_NOT_HALTED
;
1187 /* unlock option flash registers */
1188 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
1189 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
1191 /* mass erase flash memory */
1192 target_write_u32(target
, STM32_FLASH_CR
, FLASH_MER
);
1193 target_write_u32(target
, STM32_FLASH_CR
, FLASH_MER
| FLASH_STRT
);
1195 status
= stm32x_wait_status_busy(bank
, 100);
1197 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
1199 if (status
& FLASH_WRPRTERR
)
1201 LOG_ERROR("stm32x device protected");
1202 return ERROR_FLASH_OPERATION_FAILED
;
1205 if (status
& FLASH_PGERR
)
1207 LOG_ERROR("stm32x device programming failed");
1208 return ERROR_FLASH_OPERATION_FAILED
;
1214 COMMAND_HANDLER(stm32x_handle_mass_erase_command
)
1220 command_print(CMD_CTX
, "stm32x mass_erase <bank>");
1224 struct flash_bank
*bank
;
1225 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1226 if (ERROR_OK
!= retval
)
1229 retval
= stm32x_mass_erase(bank
);
1230 if (retval
== ERROR_OK
)
1232 /* set all sectors as erased */
1233 for (i
= 0; i
< bank
->num_sectors
; i
++)
1235 bank
->sectors
[i
].is_erased
= 1;
1238 command_print(CMD_CTX
, "stm32x mass erase complete");
1242 command_print(CMD_CTX
, "stm32x mass erase failed");
1248 static const struct command_registration stm32x_exec_command_handlers
[] = {
1251 .handler
= stm32x_handle_lock_command
,
1252 .mode
= COMMAND_EXEC
,
1254 .help
= "Lock entire flash device.",
1258 .handler
= stm32x_handle_unlock_command
,
1259 .mode
= COMMAND_EXEC
,
1261 .help
= "Unlock entire protected flash device.",
1264 .name
= "mass_erase",
1265 .handler
= stm32x_handle_mass_erase_command
,
1266 .mode
= COMMAND_EXEC
,
1268 .help
= "Erase entire flash device.",
1271 .name
= "options_read",
1272 .handler
= stm32x_handle_options_read_command
,
1273 .mode
= COMMAND_EXEC
,
1275 .help
= "Read and display device option byte.",
1278 .name
= "options_write",
1279 .handler
= stm32x_handle_options_write_command
,
1280 .mode
= COMMAND_EXEC
,
1281 .usage
= "bank_id ('SWWDG'|'HWWDG') "
1282 "('RSTSTNDBY'|'NORSTSTNDBY') "
1283 "('RSTSTOP'|'NORSTSTOP')",
1284 .help
= "Replace bits in device option byte.",
1286 COMMAND_REGISTRATION_DONE
1289 static const struct command_registration stm32x_command_handlers
[] = {
1292 .mode
= COMMAND_ANY
,
1293 .help
= "stm32x flash command group",
1294 .chain
= stm32x_exec_command_handlers
,
1296 COMMAND_REGISTRATION_DONE
1299 struct flash_driver stm32x_flash
= {
1301 .commands
= stm32x_command_handlers
,
1302 .flash_bank_command
= stm32x_flash_bank_command
,
1303 .erase
= stm32x_erase
,
1304 .protect
= stm32x_protect
,
1305 .write
= stm32x_write
,
1306 .read
= default_flash_read
,
1307 .probe
= stm32x_probe
,
1308 .auto_probe
= stm32x_auto_probe
,
1309 .erase_check
= default_flash_mem_blank_check
,
1310 .protect_check
= stm32x_protect_check
,
1311 .info
= get_stm32x_info
,
Linking to existing account procedure
If you already have an account and want to add another login method
you
MUST first sign in with your existing account and
then change URL to read
https://review.openocd.org/login/?link
to get to this page again but this time it'll work for linking. Thank you.
SSH host keys fingerprints
1024 SHA256:YKx8b7u5ZWdcbp7/4AeXNaqElP49m6QrwfXaqQGJAOk gerrit-code-review@openocd.zylin.com (DSA)
384 SHA256:jHIbSQa4REvwCFG4cq5LBlBLxmxSqelQPem/EXIrxjk gerrit-code-review@openocd.org (ECDSA)
521 SHA256:UAOPYkU9Fjtcao0Ul/Rrlnj/OsQvt+pgdYSZ4jOYdgs gerrit-code-review@openocd.org (ECDSA)
256 SHA256:A13M5QlnozFOvTllybRZH6vm7iSt0XLxbA48yfc2yfY gerrit-code-review@openocd.org (ECDSA)
256 SHA256:spYMBqEYoAOtK7yZBrcwE8ZpYt6b68Cfh9yEVetvbXg gerrit-code-review@openocd.org (ED25519)
+--[ED25519 256]--+
|=.. |
|+o.. . |
|*.o . . |
|+B . . . |
|Bo. = o S |
|Oo.+ + = |
|oB=.* = . o |
| =+=.+ + E |
|. .=o . o |
+----[SHA256]-----+
2048 SHA256:0Onrb7/PHjpo6iVZ7xQX2riKN83FJ3KGU0TvI0TaFG4 gerrit-code-review@openocd.zylin.com (RSA)