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) 2011 by Andreas Fritiofson *
9 * andreas.fritiofson@gmail.com *
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
25 ***************************************************************************/
32 #include <helper/binarybuffer.h>
33 #include <target/algorithm.h>
34 #include <target/armv7m.h>
36 /* stm32x register locations */
38 #define FLASH_REG_BASE_B0 0x40022000
39 #define FLASH_REG_BASE_B1 0x40022040
41 #define STM32_FLASH_ACR 0x00
42 #define STM32_FLASH_KEYR 0x04
43 #define STM32_FLASH_OPTKEYR 0x08
44 #define STM32_FLASH_SR 0x0C
45 #define STM32_FLASH_CR 0x10
46 #define STM32_FLASH_AR 0x14
47 #define STM32_FLASH_OBR 0x1C
48 #define STM32_FLASH_WRPR 0x20
50 /* TODO: Check if code using these really should be hard coded to bank 0.
51 * There are valid cases, on dual flash devices the protection of the
52 * second bank is done on the bank0 reg's. */
53 #define STM32_FLASH_ACR_B0 0x40022000
54 #define STM32_FLASH_KEYR_B0 0x40022004
55 #define STM32_FLASH_OPTKEYR_B0 0x40022008
56 #define STM32_FLASH_SR_B0 0x4002200C
57 #define STM32_FLASH_CR_B0 0x40022010
58 #define STM32_FLASH_AR_B0 0x40022014
59 #define STM32_FLASH_OBR_B0 0x4002201C
60 #define STM32_FLASH_WRPR_B0 0x40022020
62 /* option byte location */
64 #define STM32_OB_RDP 0x1FFFF800
65 #define STM32_OB_USER 0x1FFFF802
66 #define STM32_OB_DATA0 0x1FFFF804
67 #define STM32_OB_DATA1 0x1FFFF806
68 #define STM32_OB_WRP0 0x1FFFF808
69 #define STM32_OB_WRP1 0x1FFFF80A
70 #define STM32_OB_WRP2 0x1FFFF80C
71 #define STM32_OB_WRP3 0x1FFFF80E
73 /* FLASH_CR register bits */
75 #define FLASH_PG (1 << 0)
76 #define FLASH_PER (1 << 1)
77 #define FLASH_MER (1 << 2)
78 #define FLASH_OPTPG (1 << 4)
79 #define FLASH_OPTER (1 << 5)
80 #define FLASH_STRT (1 << 6)
81 #define FLASH_LOCK (1 << 7)
82 #define FLASH_OPTWRE (1 << 9)
84 /* FLASH_SR register bits */
86 #define FLASH_BSY (1 << 0)
87 #define FLASH_PGERR (1 << 2)
88 #define FLASH_WRPRTERR (1 << 4)
89 #define FLASH_EOP (1 << 5)
91 /* STM32_FLASH_OBR bit definitions (reading) */
96 #define OPT_RDRSTSTOP 3
97 #define OPT_RDRSTSTDBY 4
98 #define OPT_BFB2 5 /* dual flash bank only */
100 /* register unlock keys */
102 #define KEY1 0x45670123
103 #define KEY2 0xCDEF89AB
107 #define FLASH_WRITE_TIMEOUT 10
108 #define FLASH_ERASE_TIMEOUT 100
110 struct stm32x_options
{
112 uint16_t user_options
;
114 uint16_t protection
[4];
117 struct stm32x_flash_bank
{
118 struct stm32x_options option_bytes
;
123 /* used to access dual flash bank stm32xl */
124 uint32_t register_base
;
125 uint16_t default_rdp
;
126 int user_data_offset
;
128 uint32_t user_bank_size
;
131 static int stm32x_mass_erase(struct flash_bank
*bank
);
132 static int stm32x_get_device_id(struct flash_bank
*bank
, uint32_t *device_id
);
133 static int stm32x_write_block(struct flash_bank
*bank
, uint8_t *buffer
,
134 uint32_t offset
, uint32_t count
);
136 /* flash bank stm32x <base> <size> 0 0 <target#>
138 FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command
)
140 struct stm32x_flash_bank
*stm32x_info
;
143 return ERROR_COMMAND_SYNTAX_ERROR
;
145 stm32x_info
= malloc(sizeof(struct stm32x_flash_bank
));
147 bank
->driver_priv
= stm32x_info
;
148 stm32x_info
->probed
= 0;
149 stm32x_info
->has_dual_banks
= false;
150 stm32x_info
->register_base
= FLASH_REG_BASE_B0
;
151 stm32x_info
->user_bank_size
= bank
->size
;
156 static inline int stm32x_get_flash_reg(struct flash_bank
*bank
, uint32_t reg
)
158 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
159 return reg
+ stm32x_info
->register_base
;
162 static inline int stm32x_get_flash_status(struct flash_bank
*bank
, uint32_t *status
)
164 struct target
*target
= bank
->target
;
165 return target_read_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_SR
), status
);
168 static int stm32x_wait_status_busy(struct flash_bank
*bank
, int timeout
)
170 struct target
*target
= bank
->target
;
172 int retval
= ERROR_OK
;
174 /* wait for busy to clear */
176 retval
= stm32x_get_flash_status(bank
, &status
);
177 if (retval
!= ERROR_OK
)
179 LOG_DEBUG("status: 0x%" PRIx32
"", status
);
180 if ((status
& FLASH_BSY
) == 0)
182 if (timeout
-- <= 0) {
183 LOG_ERROR("timed out waiting for flash");
189 if (status
& FLASH_WRPRTERR
) {
190 LOG_ERROR("stm32x device protected");
194 if (status
& FLASH_PGERR
) {
195 LOG_ERROR("stm32x device programming failed");
199 /* Clear but report errors */
200 if (status
& (FLASH_WRPRTERR
| FLASH_PGERR
)) {
201 /* If this operation fails, we ignore it and report the original
204 target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_SR
),
205 FLASH_WRPRTERR
| FLASH_PGERR
);
210 static int stm32x_check_operation_supported(struct flash_bank
*bank
)
212 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
214 /* if we have a dual flash bank device then
215 * we need to perform option byte stuff on bank0 only */
216 if (stm32x_info
->register_base
!= FLASH_REG_BASE_B0
) {
217 LOG_ERROR("Option Byte Operation's must use bank0");
218 return ERROR_FLASH_OPERATION_FAILED
;
224 static int stm32x_read_options(struct flash_bank
*bank
)
227 struct stm32x_flash_bank
*stm32x_info
= NULL
;
228 struct target
*target
= bank
->target
;
230 stm32x_info
= bank
->driver_priv
;
232 /* read current option bytes */
233 int retval
= target_read_u32(target
, STM32_FLASH_OBR_B0
, &optiondata
);
234 if (retval
!= ERROR_OK
)
237 stm32x_info
->option_bytes
.user_options
= (optiondata
>> stm32x_info
->option_offset
>> 2) & 0xffff;
238 stm32x_info
->option_bytes
.user_data
= (optiondata
>> stm32x_info
->user_data_offset
) & 0xffff;
239 stm32x_info
->option_bytes
.RDP
= (optiondata
& (1 << OPT_READOUT
)) ? 0xFFFF : 0x5AA5;
241 if (optiondata
& (1 << OPT_READOUT
))
242 LOG_INFO("Device Security Bit Set");
244 /* each bit refers to a 4bank protection */
245 retval
= target_read_u32(target
, STM32_FLASH_WRPR_B0
, &optiondata
);
246 if (retval
!= ERROR_OK
)
249 stm32x_info
->option_bytes
.protection
[0] = (uint16_t)optiondata
;
250 stm32x_info
->option_bytes
.protection
[1] = (uint16_t)(optiondata
>> 8);
251 stm32x_info
->option_bytes
.protection
[2] = (uint16_t)(optiondata
>> 16);
252 stm32x_info
->option_bytes
.protection
[3] = (uint16_t)(optiondata
>> 24);
257 static int stm32x_erase_options(struct flash_bank
*bank
)
259 struct stm32x_flash_bank
*stm32x_info
= NULL
;
260 struct target
*target
= bank
->target
;
262 stm32x_info
= bank
->driver_priv
;
264 /* read current options */
265 stm32x_read_options(bank
);
267 /* unlock flash registers */
268 int retval
= target_write_u32(target
, STM32_FLASH_KEYR_B0
, KEY1
);
269 if (retval
!= ERROR_OK
)
272 retval
= target_write_u32(target
, STM32_FLASH_KEYR_B0
, KEY2
);
273 if (retval
!= ERROR_OK
)
276 /* unlock option flash registers */
277 retval
= target_write_u32(target
, STM32_FLASH_OPTKEYR_B0
, KEY1
);
278 if (retval
!= ERROR_OK
)
280 retval
= target_write_u32(target
, STM32_FLASH_OPTKEYR_B0
, KEY2
);
281 if (retval
!= ERROR_OK
)
284 /* erase option bytes */
285 retval
= target_write_u32(target
, STM32_FLASH_CR_B0
, FLASH_OPTER
| FLASH_OPTWRE
);
286 if (retval
!= ERROR_OK
)
288 retval
= target_write_u32(target
, STM32_FLASH_CR_B0
, FLASH_OPTER
| FLASH_STRT
| FLASH_OPTWRE
);
289 if (retval
!= ERROR_OK
)
292 retval
= stm32x_wait_status_busy(bank
, FLASH_ERASE_TIMEOUT
);
293 if (retval
!= ERROR_OK
)
296 /* clear readout protection and complementary option bytes
297 * this will also force a device unlock if set */
298 stm32x_info
->option_bytes
.RDP
= stm32x_info
->default_rdp
;
303 static int stm32x_write_options(struct flash_bank
*bank
)
305 struct stm32x_flash_bank
*stm32x_info
= NULL
;
306 struct target
*target
= bank
->target
;
308 stm32x_info
= bank
->driver_priv
;
310 /* unlock flash registers */
311 int retval
= target_write_u32(target
, STM32_FLASH_KEYR_B0
, KEY1
);
312 if (retval
!= ERROR_OK
)
314 retval
= target_write_u32(target
, STM32_FLASH_KEYR_B0
, KEY2
);
315 if (retval
!= ERROR_OK
)
318 /* unlock option flash registers */
319 retval
= target_write_u32(target
, STM32_FLASH_OPTKEYR_B0
, KEY1
);
320 if (retval
!= ERROR_OK
)
322 retval
= target_write_u32(target
, STM32_FLASH_OPTKEYR_B0
, KEY2
);
323 if (retval
!= ERROR_OK
)
326 /* program option bytes */
327 retval
= target_write_u32(target
, STM32_FLASH_CR_B0
, FLASH_OPTPG
| FLASH_OPTWRE
);
328 if (retval
!= ERROR_OK
)
331 uint8_t opt_bytes
[16];
333 target_buffer_set_u16(target
, opt_bytes
, stm32x_info
->option_bytes
.RDP
);
334 target_buffer_set_u16(target
, opt_bytes
+ 2, stm32x_info
->option_bytes
.user_options
);
335 target_buffer_set_u16(target
, opt_bytes
+ 4, stm32x_info
->option_bytes
.user_data
& 0xff);
336 target_buffer_set_u16(target
, opt_bytes
+ 6, (stm32x_info
->option_bytes
.user_data
>> 8) & 0xff);
337 target_buffer_set_u16(target
, opt_bytes
+ 8, stm32x_info
->option_bytes
.protection
[0]);
338 target_buffer_set_u16(target
, opt_bytes
+ 10, stm32x_info
->option_bytes
.protection
[1]);
339 target_buffer_set_u16(target
, opt_bytes
+ 12, stm32x_info
->option_bytes
.protection
[2]);
340 target_buffer_set_u16(target
, opt_bytes
+ 14, stm32x_info
->option_bytes
.protection
[3]);
342 uint32_t offset
= STM32_OB_RDP
- bank
->base
;
343 retval
= stm32x_write_block(bank
, opt_bytes
, offset
, sizeof(opt_bytes
) / 2);
344 if (retval
!= ERROR_OK
) {
345 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
346 LOG_ERROR("working area required to erase options bytes");
350 retval
= target_write_u32(target
, STM32_FLASH_CR_B0
, FLASH_LOCK
);
351 if (retval
!= ERROR_OK
)
357 static int stm32x_protect_check(struct flash_bank
*bank
)
359 struct target
*target
= bank
->target
;
360 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
367 int retval
= stm32x_check_operation_supported(bank
);
368 if (ERROR_OK
!= retval
)
371 /* medium density - each bit refers to a 4bank protection
372 * high density - each bit refers to a 2bank protection */
373 retval
= target_read_u32(target
, STM32_FLASH_WRPR_B0
, &protection
);
374 if (retval
!= ERROR_OK
)
377 /* medium density - each protection bit is for 4 * 1K pages
378 * high density - each protection bit is for 2 * 2K pages */
379 num_bits
= (bank
->num_sectors
/ stm32x_info
->ppage_size
);
381 if (stm32x_info
->ppage_size
== 2) {
382 /* high density flash/connectivity line protection */
386 if (protection
& (1 << 31))
389 /* bit 31 controls sector 62 - 255 protection for high density
390 * bit 31 controls sector 62 - 127 protection for connectivity line */
391 for (s
= 62; s
< bank
->num_sectors
; s
++)
392 bank
->sectors
[s
].is_protected
= set
;
394 if (bank
->num_sectors
> 61)
397 for (i
= 0; i
< num_bits
; i
++) {
400 if (protection
& (1 << i
))
403 for (s
= 0; s
< stm32x_info
->ppage_size
; s
++)
404 bank
->sectors
[(i
* stm32x_info
->ppage_size
) + s
].is_protected
= set
;
407 /* low/medium density flash protection */
408 for (i
= 0; i
< num_bits
; i
++) {
411 if (protection
& (1 << i
))
414 for (s
= 0; s
< stm32x_info
->ppage_size
; s
++)
415 bank
->sectors
[(i
* stm32x_info
->ppage_size
) + s
].is_protected
= set
;
422 static int stm32x_erase(struct flash_bank
*bank
, int first
, int last
)
424 struct target
*target
= bank
->target
;
427 if (bank
->target
->state
!= TARGET_HALTED
) {
428 LOG_ERROR("Target not halted");
429 return ERROR_TARGET_NOT_HALTED
;
432 if ((first
== 0) && (last
== (bank
->num_sectors
- 1)))
433 return stm32x_mass_erase(bank
);
435 /* unlock flash registers */
436 int retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_KEYR
), KEY1
);
437 if (retval
!= ERROR_OK
)
439 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_KEYR
), KEY2
);
440 if (retval
!= ERROR_OK
)
443 for (i
= first
; i
<= last
; i
++) {
444 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_PER
);
445 if (retval
!= ERROR_OK
)
447 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_AR
),
448 bank
->base
+ bank
->sectors
[i
].offset
);
449 if (retval
!= ERROR_OK
)
451 retval
= target_write_u32(target
,
452 stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_PER
| FLASH_STRT
);
453 if (retval
!= ERROR_OK
)
456 retval
= stm32x_wait_status_busy(bank
, FLASH_ERASE_TIMEOUT
);
457 if (retval
!= ERROR_OK
)
460 bank
->sectors
[i
].is_erased
= 1;
463 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_LOCK
);
464 if (retval
!= ERROR_OK
)
470 static int stm32x_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
472 struct stm32x_flash_bank
*stm32x_info
= NULL
;
473 struct target
*target
= bank
->target
;
474 uint16_t prot_reg
[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
479 stm32x_info
= bank
->driver_priv
;
481 if (target
->state
!= TARGET_HALTED
) {
482 LOG_ERROR("Target not halted");
483 return ERROR_TARGET_NOT_HALTED
;
486 int retval
= stm32x_check_operation_supported(bank
);
487 if (ERROR_OK
!= retval
)
490 if ((first
% stm32x_info
->ppage_size
) != 0) {
491 LOG_WARNING("aligned start protect sector to a %d sector boundary",
492 stm32x_info
->ppage_size
);
493 first
= first
- (first
% stm32x_info
->ppage_size
);
495 if (((last
+ 1) % stm32x_info
->ppage_size
) != 0) {
496 LOG_WARNING("aligned end protect sector to a %d sector boundary",
497 stm32x_info
->ppage_size
);
499 last
= last
- (last
% stm32x_info
->ppage_size
);
503 /* medium density - each bit refers to a 4bank protection
504 * high density - each bit refers to a 2bank protection */
505 retval
= target_read_u32(target
, STM32_FLASH_WRPR_B0
, &protection
);
506 if (retval
!= ERROR_OK
)
509 prot_reg
[0] = (uint16_t)protection
;
510 prot_reg
[1] = (uint16_t)(protection
>> 8);
511 prot_reg
[2] = (uint16_t)(protection
>> 16);
512 prot_reg
[3] = (uint16_t)(protection
>> 24);
514 if (stm32x_info
->ppage_size
== 2) {
515 /* high density flash */
517 /* bit 7 controls sector 62 - 255 protection */
520 prot_reg
[3] &= ~(1 << 7);
522 prot_reg
[3] |= (1 << 7);
530 for (i
= first
; i
<= last
; i
++) {
531 reg
= (i
/ stm32x_info
->ppage_size
) / 8;
532 bit
= (i
/ stm32x_info
->ppage_size
) - (reg
* 8);
535 prot_reg
[reg
] &= ~(1 << bit
);
537 prot_reg
[reg
] |= (1 << bit
);
540 /* medium density flash */
541 for (i
= first
; i
<= last
; i
++) {
542 reg
= (i
/ stm32x_info
->ppage_size
) / 8;
543 bit
= (i
/ stm32x_info
->ppage_size
) - (reg
* 8);
546 prot_reg
[reg
] &= ~(1 << bit
);
548 prot_reg
[reg
] |= (1 << bit
);
552 status
= stm32x_erase_options(bank
);
553 if (status
!= ERROR_OK
)
556 stm32x_info
->option_bytes
.protection
[0] = prot_reg
[0];
557 stm32x_info
->option_bytes
.protection
[1] = prot_reg
[1];
558 stm32x_info
->option_bytes
.protection
[2] = prot_reg
[2];
559 stm32x_info
->option_bytes
.protection
[3] = prot_reg
[3];
561 return stm32x_write_options(bank
);
564 static int stm32x_write_block(struct flash_bank
*bank
, uint8_t *buffer
,
565 uint32_t offset
, uint32_t count
)
567 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
568 struct target
*target
= bank
->target
;
569 uint32_t buffer_size
= 16384;
570 struct working_area
*write_algorithm
;
571 struct working_area
*source
;
572 uint32_t address
= bank
->base
+ offset
;
573 struct reg_param reg_params
[5];
574 struct armv7m_algorithm armv7m_info
;
575 int retval
= ERROR_OK
;
577 /* see contrib/loaders/flash/stm32f1x.S for src */
579 static const uint8_t stm32x_flash_write_code
[] = {
580 /* #define STM32_FLASH_SR_OFFSET 0x0C */
582 0x16, 0x68, /* ldr r6, [r2, #0] */
583 0x00, 0x2e, /* cmp r6, #0 */
584 0x18, 0xd0, /* beq exit */
585 0x55, 0x68, /* ldr r5, [r2, #4] */
586 0xb5, 0x42, /* cmp r5, r6 */
587 0xf9, 0xd0, /* beq wait_fifo */
588 0x2e, 0x88, /* ldrh r6, [r5, #0] */
589 0x26, 0x80, /* strh r6, [r4, #0] */
590 0x02, 0x35, /* adds r5, #2 */
591 0x02, 0x34, /* adds r4, #2 */
593 0xc6, 0x68, /* ldr r6, [r0, #STM32_FLASH_SR_OFFSET] */
594 0x01, 0x27, /* movs r7, #1 */
595 0x3e, 0x42, /* tst r6, r7 */
596 0xfb, 0xd1, /* bne busy */
597 0x14, 0x27, /* movs r7, #0x14 */
598 0x3e, 0x42, /* tst r6, r7 */
599 0x08, 0xd1, /* bne error */
600 0x9d, 0x42, /* cmp r5, r3 */
601 0x01, 0xd3, /* bcc no_wrap */
602 0x15, 0x46, /* mov r5, r2 */
603 0x08, 0x35, /* adds r5, #8 */
605 0x55, 0x60, /* str r5, [r2, #4] */
606 0x01, 0x39, /* subs r1, r1, #1 */
607 0x00, 0x29, /* cmp r1, #0 */
608 0x02, 0xd0, /* beq exit */
609 0xe5, 0xe7, /* b wait_fifo */
611 0x00, 0x20, /* movs r0, #0 */
612 0x50, 0x60, /* str r0, [r2, #4] */
614 0x30, 0x46, /* mov r0, r6 */
615 0x00, 0xbe, /* bkpt #0 */
618 /* flash write code */
619 if (target_alloc_working_area(target
, sizeof(stm32x_flash_write_code
),
620 &write_algorithm
) != ERROR_OK
) {
621 LOG_WARNING("no working area available, can't do block memory writes");
622 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
625 retval
= target_write_buffer(target
, write_algorithm
->address
,
626 sizeof(stm32x_flash_write_code
), stm32x_flash_write_code
);
627 if (retval
!= ERROR_OK
)
631 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
) {
633 buffer_size
&= ~3UL; /* Make sure it's 4 byte aligned */
634 if (buffer_size
<= 256) {
635 /* we already allocated the writing code, but failed to get a
636 * buffer, free the algorithm */
637 target_free_working_area(target
, write_algorithm
);
639 LOG_WARNING("no large enough working area available, can't do block memory writes");
640 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
644 init_reg_param(®_params
[0], "r0", 32, PARAM_IN_OUT
); /* flash base (in), status (out) */
645 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
); /* count (halfword-16bit) */
646 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
); /* buffer start */
647 init_reg_param(®_params
[3], "r3", 32, PARAM_OUT
); /* buffer end */
648 init_reg_param(®_params
[4], "r4", 32, PARAM_IN_OUT
); /* target address */
650 buf_set_u32(reg_params
[0].value
, 0, 32, stm32x_info
->register_base
);
651 buf_set_u32(reg_params
[1].value
, 0, 32, count
);
652 buf_set_u32(reg_params
[2].value
, 0, 32, source
->address
);
653 buf_set_u32(reg_params
[3].value
, 0, 32, source
->address
+ source
->size
);
654 buf_set_u32(reg_params
[4].value
, 0, 32, address
);
656 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
657 armv7m_info
.core_mode
= ARM_MODE_THREAD
;
659 retval
= target_run_flash_async_algorithm(target
, buffer
, count
, 2,
662 source
->address
, source
->size
,
663 write_algorithm
->address
, 0,
666 if (retval
== ERROR_FLASH_OPERATION_FAILED
) {
667 LOG_ERROR("flash write failed at address 0x%"PRIx32
,
668 buf_get_u32(reg_params
[4].value
, 0, 32));
670 if (buf_get_u32(reg_params
[0].value
, 0, 32) & FLASH_PGERR
) {
671 LOG_ERROR("flash memory not erased before writing");
672 /* Clear but report errors */
673 target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_SR
), FLASH_PGERR
);
676 if (buf_get_u32(reg_params
[0].value
, 0, 32) & FLASH_WRPRTERR
) {
677 LOG_ERROR("flash memory write protected");
678 /* Clear but report errors */
679 target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_SR
), FLASH_WRPRTERR
);
683 target_free_working_area(target
, source
);
684 target_free_working_area(target
, write_algorithm
);
686 destroy_reg_param(®_params
[0]);
687 destroy_reg_param(®_params
[1]);
688 destroy_reg_param(®_params
[2]);
689 destroy_reg_param(®_params
[3]);
690 destroy_reg_param(®_params
[4]);
695 static int stm32x_write(struct flash_bank
*bank
, uint8_t *buffer
,
696 uint32_t offset
, uint32_t count
)
698 struct target
*target
= bank
->target
;
699 uint8_t *new_buffer
= NULL
;
701 if (bank
->target
->state
!= TARGET_HALTED
) {
702 LOG_ERROR("Target not halted");
703 return ERROR_TARGET_NOT_HALTED
;
707 LOG_ERROR("offset 0x%" PRIx32
" breaks required 2-byte alignment", offset
);
708 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
711 /* If there's an odd number of bytes, the data has to be padded. Duplicate
712 * the buffer and use the normal code path with a single block write since
713 * it's probably cheaper than to special case the last odd write using
714 * discrete accesses. */
716 new_buffer
= malloc(count
+ 1);
717 if (new_buffer
== NULL
) {
718 LOG_ERROR("odd number of bytes to write and no memory for padding buffer");
721 LOG_INFO("odd number of bytes to write, padding with 0xff");
722 buffer
= memcpy(new_buffer
, buffer
, count
);
723 buffer
[count
++] = 0xff;
726 uint32_t words_remaining
= count
/ 2;
729 /* unlock flash registers */
730 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_KEYR
), KEY1
);
731 if (retval
!= ERROR_OK
)
733 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_KEYR
), KEY2
);
734 if (retval
!= ERROR_OK
)
737 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_PG
);
738 if (retval
!= ERROR_OK
)
741 /* try using a block write */
742 retval
= stm32x_write_block(bank
, buffer
, offset
, words_remaining
);
744 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
) {
745 /* if block write failed (no sufficient working area),
746 * we use normal (slow) single halfword accesses */
747 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
749 while (words_remaining
> 0) {
751 memcpy(&value
, buffer
, sizeof(uint16_t));
753 retval
= target_write_u16(target
, bank
->base
+ offset
, value
);
754 if (retval
!= ERROR_OK
)
755 goto reset_pg_and_lock
;
757 retval
= stm32x_wait_status_busy(bank
, 5);
758 if (retval
!= ERROR_OK
)
759 goto reset_pg_and_lock
;
768 retval2
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_LOCK
);
769 if (retval
== ERROR_OK
)
779 static int stm32x_get_device_id(struct flash_bank
*bank
, uint32_t *device_id
)
781 /* This check the device CPUID core register to detect
782 * the M0 from the M3 devices. */
784 struct target
*target
= bank
->target
;
785 uint32_t cpuid
, device_id_register
= 0;
787 /* Get the CPUID from the ARM Core
788 * http://infocenter.arm.com/help/topic/com.arm.doc.ddi0432c/DDI0432C_cortex_m0_r0p0_trm.pdf 4.2.1 */
789 int retval
= target_read_u32(target
, 0xE000ED00, &cpuid
);
790 if (retval
!= ERROR_OK
)
793 if (((cpuid
>> 4) & 0xFFF) == 0xC20) {
794 /* 0xC20 is M0 devices */
795 device_id_register
= 0x40015800;
796 } else if (((cpuid
>> 4) & 0xFFF) == 0xC23) {
797 /* 0xC23 is M3 devices */
798 device_id_register
= 0xE0042000;
799 } else if (((cpuid
>> 4) & 0xFFF) == 0xC24) {
800 /* 0xC24 is M4 devices */
801 device_id_register
= 0xE0042000;
803 LOG_ERROR("Cannot identify target as a stm32x");
807 /* read stm32 device id register */
808 retval
= target_read_u32(target
, device_id_register
, device_id
);
809 if (retval
!= ERROR_OK
)
815 static int stm32x_get_flash_size(struct flash_bank
*bank
, uint16_t *flash_size_in_kb
)
817 struct target
*target
= bank
->target
;
818 uint32_t cpuid
, flash_size_reg
;
820 int retval
= target_read_u32(target
, 0xE000ED00, &cpuid
);
821 if (retval
!= ERROR_OK
)
824 if (((cpuid
>> 4) & 0xFFF) == 0xC20) {
825 /* 0xC20 is M0 devices */
826 flash_size_reg
= 0x1FFFF7CC;
827 } else if (((cpuid
>> 4) & 0xFFF) == 0xC23) {
828 /* 0xC23 is M3 devices */
829 flash_size_reg
= 0x1FFFF7E0;
830 } else if (((cpuid
>> 4) & 0xFFF) == 0xC24) {
831 /* 0xC24 is M4 devices */
832 flash_size_reg
= 0x1FFFF7CC;
834 LOG_ERROR("Cannot identify target as a stm32x");
838 retval
= target_read_u16(target
, flash_size_reg
, flash_size_in_kb
);
839 if (retval
!= ERROR_OK
)
845 static int stm32x_probe(struct flash_bank
*bank
)
847 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
849 uint16_t flash_size_in_kb
;
850 uint16_t max_flash_size_in_kb
;
853 uint32_t base_address
= 0x08000000;
855 stm32x_info
->probed
= 0;
856 stm32x_info
->register_base
= FLASH_REG_BASE_B0
;
857 stm32x_info
->user_data_offset
= 10;
858 stm32x_info
->option_offset
= 0;
860 /* default factory protection level */
861 stm32x_info
->default_rdp
= 0x5AA5;
863 /* read stm32 device id register */
864 int retval
= stm32x_get_device_id(bank
, &device_id
);
865 if (retval
!= ERROR_OK
)
868 LOG_INFO("device id = 0x%08" PRIx32
"", device_id
);
870 /* set page size, protection granularity and max flash size depending on family */
871 switch (device_id
& 0xfff) {
872 case 0x410: /* medium density */
874 stm32x_info
->ppage_size
= 4;
875 max_flash_size_in_kb
= 128;
877 case 0x412: /* low density */
879 stm32x_info
->ppage_size
= 4;
880 max_flash_size_in_kb
= 32;
882 case 0x414: /* high density */
884 stm32x_info
->ppage_size
= 2;
885 max_flash_size_in_kb
= 512;
887 case 0x418: /* connectivity line density */
889 stm32x_info
->ppage_size
= 2;
890 max_flash_size_in_kb
= 256;
892 case 0x420: /* value line density */
894 stm32x_info
->ppage_size
= 4;
895 max_flash_size_in_kb
= 128;
897 case 0x422: /* stm32f30x */
899 stm32x_info
->ppage_size
= 2;
900 max_flash_size_in_kb
= 256;
901 stm32x_info
->user_data_offset
= 16;
902 stm32x_info
->option_offset
= 6;
903 stm32x_info
->default_rdp
= 0x55AA;
905 case 0x428: /* value line High density */
907 stm32x_info
->ppage_size
= 4;
908 max_flash_size_in_kb
= 128;
910 case 0x430: /* xl line density (dual flash banks) */
912 stm32x_info
->ppage_size
= 2;
913 max_flash_size_in_kb
= 1024;
914 stm32x_info
->has_dual_banks
= true;
916 case 0x432: /* stm32f37x */
918 stm32x_info
->ppage_size
= 2;
919 max_flash_size_in_kb
= 256;
920 stm32x_info
->user_data_offset
= 16;
921 stm32x_info
->option_offset
= 6;
922 stm32x_info
->default_rdp
= 0x55AA;
924 case 0x440: /* stm32f0x */
927 stm32x_info
->ppage_size
= 4;
928 max_flash_size_in_kb
= 64;
929 stm32x_info
->user_data_offset
= 16;
930 stm32x_info
->option_offset
= 6;
931 stm32x_info
->default_rdp
= 0x55AA;
934 LOG_WARNING("Cannot identify target as a STM32 family.");
938 /* get flash size from target. */
939 retval
= stm32x_get_flash_size(bank
, &flash_size_in_kb
);
941 /* failed reading flash size or flash size invalid (early silicon),
942 * default to max target family */
943 if (retval
!= ERROR_OK
|| flash_size_in_kb
== 0xffff || flash_size_in_kb
== 0) {
944 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming %dk flash",
945 max_flash_size_in_kb
);
946 flash_size_in_kb
= max_flash_size_in_kb
;
949 if (stm32x_info
->has_dual_banks
) {
950 /* split reported size into matching bank */
951 if (bank
->base
!= 0x08080000) {
952 /* bank 0 will be fixed 512k */
953 flash_size_in_kb
= 512;
955 flash_size_in_kb
-= 512;
956 /* bank1 also uses a register offset */
957 stm32x_info
->register_base
= FLASH_REG_BASE_B1
;
958 base_address
= 0x08080000;
962 /* if the user sets the size manually then ignore the probed value
963 * this allows us to work around devices that have a invalid flash size register value */
964 if (stm32x_info
->user_bank_size
) {
965 LOG_INFO("ignoring flash probed value, using configured bank size");
966 flash_size_in_kb
= stm32x_info
->user_bank_size
/ 1024;
969 LOG_INFO("flash size = %dkbytes", flash_size_in_kb
);
971 /* did we assign flash size? */
972 assert(flash_size_in_kb
!= 0xffff);
974 /* calculate numbers of pages */
975 int num_pages
= flash_size_in_kb
* 1024 / page_size
;
977 /* check that calculation result makes sense */
978 assert(num_pages
> 0);
982 bank
->sectors
= NULL
;
985 bank
->base
= base_address
;
986 bank
->size
= (num_pages
* page_size
);
987 bank
->num_sectors
= num_pages
;
988 bank
->sectors
= malloc(sizeof(struct flash_sector
) * num_pages
);
990 for (i
= 0; i
< num_pages
; i
++) {
991 bank
->sectors
[i
].offset
= i
* page_size
;
992 bank
->sectors
[i
].size
= page_size
;
993 bank
->sectors
[i
].is_erased
= -1;
994 bank
->sectors
[i
].is_protected
= 1;
997 stm32x_info
->probed
= 1;
1002 static int stm32x_auto_probe(struct flash_bank
*bank
)
1004 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
1005 if (stm32x_info
->probed
)
1007 return stm32x_probe(bank
);
1011 COMMAND_HANDLER(stm32x_handle_part_id_command
)
1017 static int get_stm32x_info(struct flash_bank
*bank
, char *buf
, int buf_size
)
1019 uint32_t dbgmcu_idcode
;
1021 /* read stm32 device id register */
1022 int retval
= stm32x_get_device_id(bank
, &dbgmcu_idcode
);
1023 if (retval
!= ERROR_OK
)
1026 uint16_t device_id
= dbgmcu_idcode
& 0xfff;
1027 uint16_t rev_id
= dbgmcu_idcode
>> 16;
1028 const char *device_str
;
1029 const char *rev_str
= NULL
;
1031 switch (device_id
) {
1033 device_str
= "STM32F10x (Medium Density)";
1055 device_str
= "STM32F10x (Low Density)";
1065 device_str
= "STM32F10x (High Density)";
1083 device_str
= "STM32F10x (Connectivity)";
1097 device_str
= "STM32F100 (Low/Medium Density)";
1111 device_str
= "STM32F30x";
1133 device_str
= "STM32F100 (High Density)";
1147 device_str
= "STM32F10x (XL Density)";
1157 device_str
= "STM32F37x";
1172 device_str
= "STM32F0xx";
1186 snprintf(buf
, buf_size
, "Cannot identify target as a STM32F0/1/3\n");
1190 if (rev_str
!= NULL
)
1191 snprintf(buf
, buf_size
, "%s - Rev: %s", device_str
, rev_str
);
1193 snprintf(buf
, buf_size
, "%s - Rev: unknown (0x%04x)", device_str
, rev_id
);
1198 COMMAND_HANDLER(stm32x_handle_lock_command
)
1200 struct target
*target
= NULL
;
1201 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1204 return ERROR_COMMAND_SYNTAX_ERROR
;
1206 struct flash_bank
*bank
;
1207 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1208 if (ERROR_OK
!= retval
)
1211 stm32x_info
= bank
->driver_priv
;
1213 target
= bank
->target
;
1215 if (target
->state
!= TARGET_HALTED
) {
1216 LOG_ERROR("Target not halted");
1217 return ERROR_TARGET_NOT_HALTED
;
1220 retval
= stm32x_check_operation_supported(bank
);
1221 if (ERROR_OK
!= retval
)
1224 if (stm32x_erase_options(bank
) != ERROR_OK
) {
1225 command_print(CMD_CTX
, "stm32x failed to erase options");
1229 /* set readout protection */
1230 stm32x_info
->option_bytes
.RDP
= 0;
1232 if (stm32x_write_options(bank
) != ERROR_OK
) {
1233 command_print(CMD_CTX
, "stm32x failed to lock device");
1237 command_print(CMD_CTX
, "stm32x locked");
1242 COMMAND_HANDLER(stm32x_handle_unlock_command
)
1244 struct target
*target
= NULL
;
1247 return ERROR_COMMAND_SYNTAX_ERROR
;
1249 struct flash_bank
*bank
;
1250 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1251 if (ERROR_OK
!= retval
)
1254 target
= bank
->target
;
1256 if (target
->state
!= TARGET_HALTED
) {
1257 LOG_ERROR("Target not halted");
1258 return ERROR_TARGET_NOT_HALTED
;
1261 retval
= stm32x_check_operation_supported(bank
);
1262 if (ERROR_OK
!= retval
)
1265 if (stm32x_erase_options(bank
) != ERROR_OK
) {
1266 command_print(CMD_CTX
, "stm32x failed to unlock device");
1270 if (stm32x_write_options(bank
) != ERROR_OK
) {
1271 command_print(CMD_CTX
, "stm32x failed to lock device");
1275 command_print(CMD_CTX
, "stm32x unlocked.\n"
1276 "INFO: a reset or power cycle is required "
1277 "for the new settings to take effect.");
1282 COMMAND_HANDLER(stm32x_handle_options_read_command
)
1284 uint32_t optionbyte
;
1285 struct target
*target
= NULL
;
1286 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1289 return ERROR_COMMAND_SYNTAX_ERROR
;
1291 struct flash_bank
*bank
;
1292 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1293 if (ERROR_OK
!= retval
)
1296 stm32x_info
= bank
->driver_priv
;
1298 target
= bank
->target
;
1300 if (target
->state
!= TARGET_HALTED
) {
1301 LOG_ERROR("Target not halted");
1302 return ERROR_TARGET_NOT_HALTED
;
1305 retval
= stm32x_check_operation_supported(bank
);
1306 if (ERROR_OK
!= retval
)
1309 retval
= target_read_u32(target
, STM32_FLASH_OBR_B0
, &optionbyte
);
1310 if (retval
!= ERROR_OK
)
1312 command_print(CMD_CTX
, "Option Byte: 0x%" PRIx32
"", optionbyte
);
1314 int user_data
= optionbyte
;
1316 if (optionbyte
>> OPT_ERROR
& 1)
1317 command_print(CMD_CTX
, "Option Byte Complement Error");
1319 if (optionbyte
>> OPT_READOUT
& 1)
1320 command_print(CMD_CTX
, "Readout Protection On");
1322 command_print(CMD_CTX
, "Readout Protection Off");
1324 /* user option bytes are offset depending on variant */
1325 optionbyte
>>= stm32x_info
->option_offset
;
1327 if (optionbyte
>> OPT_RDWDGSW
& 1)
1328 command_print(CMD_CTX
, "Software Watchdog");
1330 command_print(CMD_CTX
, "Hardware Watchdog");
1332 if (optionbyte
>> OPT_RDRSTSTOP
& 1)
1333 command_print(CMD_CTX
, "Stop: No reset generated");
1335 command_print(CMD_CTX
, "Stop: Reset generated");
1337 if (optionbyte
>> OPT_RDRSTSTDBY
& 1)
1338 command_print(CMD_CTX
, "Standby: No reset generated");
1340 command_print(CMD_CTX
, "Standby: Reset generated");
1342 if (stm32x_info
->has_dual_banks
) {
1343 if (optionbyte
>> OPT_BFB2
& 1)
1344 command_print(CMD_CTX
, "Boot: Bank 0");
1346 command_print(CMD_CTX
, "Boot: Bank 1");
1349 command_print(CMD_CTX
, "User Option0: 0x%02" PRIx8
,
1350 (uint8_t)((user_data
>> stm32x_info
->user_data_offset
) & 0xff));
1351 command_print(CMD_CTX
, "User Option1: 0x%02" PRIx8
,
1352 (uint8_t)((user_data
>> (stm32x_info
->user_data_offset
+ 8)) & 0xff));
1357 COMMAND_HANDLER(stm32x_handle_options_write_command
)
1359 struct target
*target
= NULL
;
1360 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1361 uint16_t optionbyte
;
1364 return ERROR_COMMAND_SYNTAX_ERROR
;
1366 struct flash_bank
*bank
;
1367 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1368 if (ERROR_OK
!= retval
)
1371 stm32x_info
= bank
->driver_priv
;
1373 target
= bank
->target
;
1375 if (target
->state
!= TARGET_HALTED
) {
1376 LOG_ERROR("Target not halted");
1377 return ERROR_TARGET_NOT_HALTED
;
1380 retval
= stm32x_check_operation_supported(bank
);
1381 if (ERROR_OK
!= retval
)
1384 retval
= stm32x_read_options(bank
);
1385 if (ERROR_OK
!= retval
)
1388 /* start with current options */
1389 optionbyte
= stm32x_info
->option_bytes
.user_options
;
1391 /* skip over flash bank */
1396 if (strcmp("SWWDG", CMD_ARGV
[0]) == 0)
1397 optionbyte
|= (1 << 0);
1398 else if (strcmp("HWWDG", CMD_ARGV
[0]) == 0)
1399 optionbyte
&= ~(1 << 0);
1400 else if (strcmp("NORSTSTOP", CMD_ARGV
[0]) == 0)
1401 optionbyte
&= ~(1 << 1);
1402 else if (strcmp("RSTSTNDBY", CMD_ARGV
[0]) == 0)
1403 optionbyte
&= ~(1 << 1);
1404 else if (strcmp("NORSTSTNDBY", CMD_ARGV
[0]) == 0)
1405 optionbyte
&= ~(1 << 2);
1406 else if (strcmp("RSTSTOP", CMD_ARGV
[0]) == 0)
1407 optionbyte
&= ~(1 << 2);
1408 else if (stm32x_info
->has_dual_banks
) {
1409 if (strcmp("BOOT0", CMD_ARGV
[0]) == 0)
1410 optionbyte
|= (1 << 3);
1411 else if (strcmp("BOOT1", CMD_ARGV
[0]) == 0)
1412 optionbyte
&= ~(1 << 3);
1414 return ERROR_COMMAND_SYNTAX_ERROR
;
1416 return ERROR_COMMAND_SYNTAX_ERROR
;
1421 if (stm32x_erase_options(bank
) != ERROR_OK
) {
1422 command_print(CMD_CTX
, "stm32x failed to erase options");
1426 stm32x_info
->option_bytes
.user_options
= optionbyte
;
1428 if (stm32x_write_options(bank
) != ERROR_OK
) {
1429 command_print(CMD_CTX
, "stm32x failed to write options");
1433 command_print(CMD_CTX
, "stm32x write options complete.\n"
1434 "INFO: a reset or power cycle is required "
1435 "for the new settings to take effect.");
1440 static int stm32x_mass_erase(struct flash_bank
*bank
)
1442 struct target
*target
= bank
->target
;
1444 if (target
->state
!= TARGET_HALTED
) {
1445 LOG_ERROR("Target not halted");
1446 return ERROR_TARGET_NOT_HALTED
;
1449 /* unlock option flash registers */
1450 int retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_KEYR
), KEY1
);
1451 if (retval
!= ERROR_OK
)
1453 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_KEYR
), KEY2
);
1454 if (retval
!= ERROR_OK
)
1457 /* mass erase flash memory */
1458 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_MER
);
1459 if (retval
!= ERROR_OK
)
1461 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
1462 FLASH_MER
| FLASH_STRT
);
1463 if (retval
!= ERROR_OK
)
1466 retval
= stm32x_wait_status_busy(bank
, FLASH_ERASE_TIMEOUT
);
1467 if (retval
!= ERROR_OK
)
1470 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_LOCK
);
1471 if (retval
!= ERROR_OK
)
1477 COMMAND_HANDLER(stm32x_handle_mass_erase_command
)
1482 return ERROR_COMMAND_SYNTAX_ERROR
;
1484 struct flash_bank
*bank
;
1485 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1486 if (ERROR_OK
!= retval
)
1489 retval
= stm32x_mass_erase(bank
);
1490 if (retval
== ERROR_OK
) {
1491 /* set all sectors as erased */
1492 for (i
= 0; i
< bank
->num_sectors
; i
++)
1493 bank
->sectors
[i
].is_erased
= 1;
1495 command_print(CMD_CTX
, "stm32x mass erase complete");
1497 command_print(CMD_CTX
, "stm32x mass erase failed");
1502 static const struct command_registration stm32x_exec_command_handlers
[] = {
1505 .handler
= stm32x_handle_lock_command
,
1506 .mode
= COMMAND_EXEC
,
1508 .help
= "Lock entire flash device.",
1512 .handler
= stm32x_handle_unlock_command
,
1513 .mode
= COMMAND_EXEC
,
1515 .help
= "Unlock entire protected flash device.",
1518 .name
= "mass_erase",
1519 .handler
= stm32x_handle_mass_erase_command
,
1520 .mode
= COMMAND_EXEC
,
1522 .help
= "Erase entire flash device.",
1525 .name
= "options_read",
1526 .handler
= stm32x_handle_options_read_command
,
1527 .mode
= COMMAND_EXEC
,
1529 .help
= "Read and display device option byte.",
1532 .name
= "options_write",
1533 .handler
= stm32x_handle_options_write_command
,
1534 .mode
= COMMAND_EXEC
,
1535 .usage
= "bank_id ('SWWDG'|'HWWDG') "
1536 "('RSTSTNDBY'|'NORSTSTNDBY') "
1537 "('RSTSTOP'|'NORSTSTOP')",
1538 .help
= "Replace bits in device option byte.",
1540 COMMAND_REGISTRATION_DONE
1543 static const struct command_registration stm32x_command_handlers
[] = {
1546 .mode
= COMMAND_ANY
,
1547 .help
= "stm32f1x flash command group",
1549 .chain
= stm32x_exec_command_handlers
,
1551 COMMAND_REGISTRATION_DONE
1554 struct flash_driver stm32f1x_flash
= {
1556 .commands
= stm32x_command_handlers
,
1557 .flash_bank_command
= stm32x_flash_bank_command
,
1558 .erase
= stm32x_erase
,
1559 .protect
= stm32x_protect
,
1560 .write
= stm32x_write
,
1561 .read
= default_flash_read
,
1562 .probe
= stm32x_probe
,
1563 .auto_probe
= stm32x_auto_probe
,
1564 .erase_check
= default_flash_blank_check
,
1565 .protect_check
= stm32x_protect_check
,
1566 .info
= get_stm32x_info
,