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 Øyvind Harboe *
9 * oyvind.harboe@zylin.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, see <http://www.gnu.org/licenses/>. *
23 ***************************************************************************/
30 #include <helper/binarybuffer.h>
31 #include <target/algorithm.h>
32 #include <target/cortex_m.h>
34 /* Regarding performance:
36 * Short story - it might be best to leave the performance at
39 * You may see a jump in speed if you change to using
40 * 32bit words for the block programming.
42 * Its a shame you cannot use the double word as its
43 * even faster - but you require external VPP for that mode.
45 * Having said all that 16bit writes give us the widest vdd
46 * operating range, so may be worth adding a note to that effect.
50 /* Danger!!!! The STM32F1x and STM32F2x series actually have
51 * quite different flash controllers.
53 * What's more scary is that the names of the registers and their
54 * addresses are the same, but the actual bits and what they do are
55 * can be very different.
57 * To reduce testing complexity and dangers of regressions,
58 * a separate file is used for stm32fx2x.
60 * Sector sizes in kiBytes:
61 * 1 MiByte part with 4 x 16, 1 x 64, 7 x 128.
62 * 1.5 MiByte part with 4 x 16, 1 x 64, 11 x 128.
63 * 2 MiByte part with 4 x 16, 1 x 64, 7 x 128, 4 x 16, 1 x 64, 7 x 128.
64 * 1 MiByte STM32F42x/43x part with DB1M Option set:
65 * 4 x 16, 1 x 64, 3 x 128, 4 x 16, 1 x 64, 3 x 128.
68 * 512 kiByte part with 4 x 16, 1 x 64, 3 x 128.
71 * 1 MiByte part with 4 x 32, 1 x 128, 3 x 256.
74 * 1 MiByte part in single bank mode with 4 x 32, 1 x 128, 3 x 256.
75 * 1 MiByte part in dual-bank mode two banks with 4 x 16, 1 x 64, 3 x 128 each.
76 * 2 MiByte part in single-bank mode with 4 x 32, 1 x 128, 7 x 256.
77 * 2 MiByte part in dual-bank mode two banks with 4 x 16, 1 x 64, 7 x 128 each.
79 * Protection size is sector size.
81 * Tested with STM3220F-EVAL board.
83 * STM32F4xx series for reference.
86 * http://www.st.com/web/en/resource/technical/document/reference_manual/DM00031020.pdf
89 * www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/
90 * PROGRAMMING_MANUAL/CD00233952.pdf
92 * STM32F7xx series for reference.
95 * http://www.st.com/web/en/resource/technical/document/reference_manual/DM00124865.pdf
98 * http://www.st.com/resource/en/reference_manual/dm00224583.pdf
101 * http://www.st.com/resource/en/reference_manual/dm00305666.pdf
104 * http://www.st.com/resource/en/reference_manual/dm00305990.pdf
106 * STM32F1x series - notice that this code was copy, pasted and knocked
107 * into a stm32f2x driver, so in case something has been converted or
108 * bugs haven't been fixed, here are the original manuals:
110 * RM0008 - Reference manual
112 * RM0042, the Flash programming manual for low-, medium- high-density and
113 * connectivity line STM32F10x devices
115 * PM0068, the Flash programming manual for XL-density STM32F10x devices.
119 /* Erase time can be as high as 1000ms, 10x this and it's toast... */
120 #define FLASH_ERASE_TIMEOUT 10000
121 #define FLASH_WRITE_TIMEOUT 5
123 /* Mass erase time can be as high as 32 s in x8 mode. */
124 #define FLASH_MASS_ERASE_TIMEOUT 33000
126 #define FLASH_BANK_BASE 0x80000000
128 #define STM32F2_OTP_SIZE 512
129 #define STM32F2_OTP_SECTOR_SIZE 32
130 #define STM32F2_OTP_BANK_BASE 0x1fff7800
131 #define STM32F2_OTP_LOCK_BASE ((STM32F2_OTP_BANK_BASE) + (STM32F2_OTP_SIZE))
133 /* see RM0410 section 3.6 "One-time programmable bytes" */
134 #define STM32F7_OTP_SECTOR_SIZE 64
135 #define STM32F7_OTP_SIZE 1024
136 #define STM32F7_OTP_BANK_BASE 0x1ff0f000
137 #define STM32F7_OTP_LOCK_BASE ((STM32F7_OTP_BANK_BASE) + (STM32F7_OTP_SIZE))
139 #define STM32_FLASH_BASE 0x40023c00
140 #define STM32_FLASH_ACR 0x40023c00
141 #define STM32_FLASH_KEYR 0x40023c04
142 #define STM32_FLASH_OPTKEYR 0x40023c08
143 #define STM32_FLASH_SR 0x40023c0C
144 #define STM32_FLASH_CR 0x40023c10
145 #define STM32_FLASH_OPTCR 0x40023c14
146 #define STM32_FLASH_OPTCR1 0x40023c18
147 #define STM32_FLASH_OPTCR2 0x40023c1c
149 /* FLASH_CR register bits */
150 #define FLASH_PG (1 << 0)
151 #define FLASH_SER (1 << 1)
152 #define FLASH_MER (1 << 2) /* MER/MER1 for f76x/77x */
153 #define FLASH_MER1 (1 << 15) /* MER2 for f76x/77x, confusing ... */
154 #define FLASH_STRT (1 << 16)
155 #define FLASH_PSIZE_8 (0 << 8)
156 #define FLASH_PSIZE_16 (1 << 8)
157 #define FLASH_PSIZE_32 (2 << 8)
158 #define FLASH_PSIZE_64 (3 << 8)
159 /* The sector number encoding is not straight binary for dual bank flash. */
160 #define FLASH_SNB(a) ((a) << 3)
161 #define FLASH_LOCK (1 << 31)
163 /* FLASH_SR register bits */
164 #define FLASH_BSY (1 << 16)
165 #define FLASH_PGSERR (1 << 7) /* Programming sequence error */
166 #define FLASH_PGPERR (1 << 6) /* Programming parallelism error */
167 #define FLASH_PGAERR (1 << 5) /* Programming alignment error */
168 #define FLASH_WRPERR (1 << 4) /* Write protection error */
169 #define FLASH_OPERR (1 << 1) /* Operation error */
171 #define FLASH_ERROR (FLASH_PGSERR | FLASH_PGPERR | FLASH_PGAERR | FLASH_WRPERR | FLASH_OPERR)
173 /* STM32_FLASH_OPTCR register bits */
174 #define OPTCR_LOCK (1 << 0)
175 #define OPTCR_START (1 << 1)
176 #define OPTCR_NDBANK (1 << 29) /* not dual bank mode */
177 #define OPTCR_DB1M (1 << 30) /* 1 MiB devices dual flash bank option */
178 #define OPTCR_SPRMOD (1 << 31) /* switches PCROPi/nWPRi interpretation */
180 /* STM32_FLASH_OPTCR2 register bits */
181 #define OPTCR2_PCROP_RDP (1 << 31) /* erase PCROP zone when decreasing RDP */
183 /* register unlock keys */
184 #define KEY1 0x45670123
185 #define KEY2 0xCDEF89AB
187 /* option register unlock key */
188 #define OPTKEY1 0x08192A3B
189 #define OPTKEY2 0x4C5D6E7F
191 struct stm32x_options
{
193 uint16_t user_options
; /* bit 0-7 usual options, bit 8-11 extra options */
196 uint32_t optcr2_pcrop
;
199 struct stm32x_flash_bank
{
200 struct stm32x_options option_bytes
;
203 bool has_large_mem
; /* F42x/43x/469/479/7xx in dual bank mode */
204 bool has_extra_options
; /* F42x/43x/469/479/7xx */
205 bool has_boot_addr
; /* F7xx */
206 bool has_optcr2_pcrop
; /* F72x/73x */
207 unsigned int protection_bits
; /* F413/423 */
208 uint32_t user_bank_size
;
211 static bool stm32x_is_otp(struct flash_bank
*bank
)
213 return bank
->base
== STM32F2_OTP_BANK_BASE
||
214 bank
->base
== STM32F7_OTP_BANK_BASE
;
217 static bool stm32x_otp_is_f7(struct flash_bank
*bank
)
219 return bank
->base
== STM32F7_OTP_BANK_BASE
;
222 static int stm32x_is_otp_unlocked(struct flash_bank
*bank
)
224 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
226 return stm32x_info
->otp_unlocked
;
229 static int stm32x_otp_disable(struct flash_bank
*bank
)
231 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
233 LOG_INFO("OTP memory bank #%u is disabled for write commands.",
235 stm32x_info
->otp_unlocked
= false;
239 static int stm32x_otp_enable(struct flash_bank
*bank
)
241 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
243 if (!stm32x_info
->otp_unlocked
) {
244 LOG_INFO("OTP memory bank #%u is is enabled for write commands.",
246 stm32x_info
->otp_unlocked
= true;
248 LOG_WARNING("OTP memory bank #%u is is already enabled for write commands.",
254 /* flash bank stm32x <base> <size> 0 0 <target#>
256 FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command
)
258 struct stm32x_flash_bank
*stm32x_info
;
261 return ERROR_COMMAND_SYNTAX_ERROR
;
263 stm32x_info
= malloc(sizeof(struct stm32x_flash_bank
));
264 bank
->driver_priv
= stm32x_info
;
266 stm32x_info
->probed
= false;
267 stm32x_info
->otp_unlocked
= false;
268 stm32x_info
->user_bank_size
= bank
->size
;
273 static inline int stm32x_get_flash_reg(struct flash_bank
*bank
, uint32_t reg
)
278 static inline int stm32x_get_flash_status(struct flash_bank
*bank
, uint32_t *status
)
280 struct target
*target
= bank
->target
;
281 return target_read_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_SR
), status
);
284 static int stm32x_wait_status_busy(struct flash_bank
*bank
, int timeout
)
286 struct target
*target
= bank
->target
;
288 int retval
= ERROR_OK
;
290 /* wait for busy to clear */
292 retval
= stm32x_get_flash_status(bank
, &status
);
293 if (retval
!= ERROR_OK
)
295 LOG_DEBUG("status: 0x%" PRIx32
, status
);
296 if ((status
& FLASH_BSY
) == 0)
298 if (timeout
-- <= 0) {
299 LOG_ERROR("timed out waiting for flash");
306 if (status
& FLASH_WRPERR
) {
307 LOG_ERROR("stm32x device protected");
311 /* Clear but report errors */
312 if (status
& FLASH_ERROR
) {
313 if (retval
== ERROR_OK
)
315 /* If this operation fails, we ignore it and report the original
318 target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_SR
),
319 status
& FLASH_ERROR
);
324 static int stm32x_unlock_reg(struct target
*target
)
328 /* first check if not already unlocked
329 * otherwise writing on STM32_FLASH_KEYR will fail
331 int retval
= target_read_u32(target
, STM32_FLASH_CR
, &ctrl
);
332 if (retval
!= ERROR_OK
)
335 if ((ctrl
& FLASH_LOCK
) == 0)
338 /* unlock flash registers */
339 retval
= target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
340 if (retval
!= ERROR_OK
)
343 retval
= target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
344 if (retval
!= ERROR_OK
)
347 retval
= target_read_u32(target
, STM32_FLASH_CR
, &ctrl
);
348 if (retval
!= ERROR_OK
)
351 if (ctrl
& FLASH_LOCK
) {
352 LOG_ERROR("flash not unlocked STM32_FLASH_CR: 0x%" PRIx32
, ctrl
);
353 return ERROR_TARGET_FAILURE
;
359 static int stm32x_unlock_option_reg(struct target
*target
)
363 int retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &ctrl
);
364 if (retval
!= ERROR_OK
)
367 if ((ctrl
& OPTCR_LOCK
) == 0)
370 /* unlock option registers */
371 retval
= target_write_u32(target
, STM32_FLASH_OPTKEYR
, OPTKEY1
);
372 if (retval
!= ERROR_OK
)
375 retval
= target_write_u32(target
, STM32_FLASH_OPTKEYR
, OPTKEY2
);
376 if (retval
!= ERROR_OK
)
379 retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &ctrl
);
380 if (retval
!= ERROR_OK
)
383 if (ctrl
& OPTCR_LOCK
) {
384 LOG_ERROR("options not unlocked STM32_FLASH_OPTCR: 0x%" PRIx32
, ctrl
);
385 return ERROR_TARGET_FAILURE
;
391 static int stm32x_read_options(struct flash_bank
*bank
)
394 struct stm32x_flash_bank
*stm32x_info
= NULL
;
395 struct target
*target
= bank
->target
;
397 stm32x_info
= bank
->driver_priv
;
399 /* read current option bytes */
400 int retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &optiondata
);
401 if (retval
!= ERROR_OK
)
404 /* caution: F2 implements 5 bits (WDG_SW only)
405 * whereas F7 6 bits (IWDG_SW and WWDG_SW) in user_options */
406 stm32x_info
->option_bytes
.user_options
= optiondata
& 0xfc;
407 stm32x_info
->option_bytes
.RDP
= (optiondata
>> 8) & 0xff;
408 stm32x_info
->option_bytes
.protection
=
409 (optiondata
>> 16) & (~(0xffff << stm32x_info
->protection_bits
) & 0xffff);
411 if (stm32x_info
->has_extra_options
) {
412 /* F42x/43x/469/479 and 7xx have up to 4 bits of extra options */
413 stm32x_info
->option_bytes
.user_options
|= (optiondata
>> 20) &
414 ((0xf00 << (stm32x_info
->protection_bits
- 12)) & 0xf00);
417 if (stm32x_info
->has_large_mem
|| stm32x_info
->has_boot_addr
) {
418 retval
= target_read_u32(target
, STM32_FLASH_OPTCR1
, &optiondata
);
419 if (retval
!= ERROR_OK
)
422 /* FLASH_OPTCR1 has quite different meanings ... */
423 if (stm32x_info
->has_boot_addr
) {
424 /* for F7xx it contains boot0 and boot1 */
425 stm32x_info
->option_bytes
.boot_addr
= optiondata
;
427 /* for F42x/43x/469/479 it contains 12 additional protection bits */
428 stm32x_info
->option_bytes
.protection
|= (optiondata
>> 4) & 0x00fff000;
432 if (stm32x_info
->has_optcr2_pcrop
) {
433 retval
= target_read_u32(target
, STM32_FLASH_OPTCR2
, &optiondata
);
434 if (retval
!= ERROR_OK
)
437 stm32x_info
->option_bytes
.optcr2_pcrop
= optiondata
;
438 if (stm32x_info
->has_optcr2_pcrop
&&
439 (stm32x_info
->option_bytes
.optcr2_pcrop
& ~OPTCR2_PCROP_RDP
)) {
440 LOG_INFO("PCROP Engaged");
443 stm32x_info
->option_bytes
.optcr2_pcrop
= 0x0;
446 if (stm32x_info
->option_bytes
.RDP
!= 0xAA)
447 LOG_INFO("Device Security Bit Set");
452 static int stm32x_write_options(struct flash_bank
*bank
)
454 struct stm32x_flash_bank
*stm32x_info
= NULL
;
455 struct target
*target
= bank
->target
;
456 uint32_t optiondata
, optiondata2
;
458 stm32x_info
= bank
->driver_priv
;
460 int retval
= stm32x_unlock_option_reg(target
);
461 if (retval
!= ERROR_OK
)
464 /* rebuild option data */
465 optiondata
= stm32x_info
->option_bytes
.user_options
& 0xfc;
466 optiondata
|= stm32x_info
->option_bytes
.RDP
<< 8;
467 optiondata
|= (stm32x_info
->option_bytes
.protection
&
468 (~(0xffff << stm32x_info
->protection_bits
))) << 16;
470 if (stm32x_info
->has_extra_options
) {
471 /* F42x/43x/469/479 and 7xx have up to 4 bits of extra options */
472 optiondata
|= (stm32x_info
->option_bytes
.user_options
&
473 ((0xf00 << (stm32x_info
->protection_bits
- 12)) & 0xf00)) << 20;
476 if (stm32x_info
->has_large_mem
|| stm32x_info
->has_boot_addr
) {
477 if (stm32x_info
->has_boot_addr
) {
478 /* F7xx uses FLASH_OPTCR1 for boot0 and boot1 ... */
479 optiondata2
= stm32x_info
->option_bytes
.boot_addr
;
481 /* F42x/43x/469/479 uses FLASH_OPTCR1 for additional protection bits */
482 optiondata2
= (stm32x_info
->option_bytes
.protection
& 0x00fff000) << 4;
485 retval
= target_write_u32(target
, STM32_FLASH_OPTCR1
, optiondata2
);
486 if (retval
!= ERROR_OK
)
490 /* program extra pcrop register */
491 if (stm32x_info
->has_optcr2_pcrop
) {
492 retval
= target_write_u32(target
, STM32_FLASH_OPTCR2
,
493 stm32x_info
->option_bytes
.optcr2_pcrop
);
494 if (retval
!= ERROR_OK
)
498 /* program options */
499 retval
= target_write_u32(target
, STM32_FLASH_OPTCR
, optiondata
);
500 if (retval
!= ERROR_OK
)
503 /* start programming cycle */
504 retval
= target_write_u32(target
, STM32_FLASH_OPTCR
, optiondata
| OPTCR_START
);
505 if (retval
!= ERROR_OK
)
508 /* wait for completion, this might trigger a security erase and take a while */
509 retval
= stm32x_wait_status_busy(bank
, FLASH_MASS_ERASE_TIMEOUT
);
510 if (retval
!= ERROR_OK
)
513 /* relock registers */
514 retval
= target_write_u32(target
, STM32_FLASH_OPTCR
, optiondata
| OPTCR_LOCK
);
515 if (retval
!= ERROR_OK
)
521 static int stm32x_otp_read_protect(struct flash_bank
*bank
)
523 struct target
*target
= bank
->target
;
528 lock_base
= stm32x_otp_is_f7(bank
) ? STM32F7_OTP_LOCK_BASE
529 : STM32F2_OTP_LOCK_BASE
;
531 for (unsigned int i
= 0; i
< bank
->num_sectors
; i
++) {
532 retval
= target_read_u8(target
, lock_base
+ i
, &lock
);
533 if (retval
!= ERROR_OK
)
535 bank
->sectors
[i
].is_protected
= !lock
;
541 static int stm32x_otp_protect(struct flash_bank
*bank
, unsigned int first
,
544 struct target
*target
= bank
->target
;
549 assert((first
<= last
) && (last
< bank
->num_sectors
));
551 lock_base
= stm32x_otp_is_f7(bank
) ? STM32F7_OTP_LOCK_BASE
552 : STM32F2_OTP_LOCK_BASE
;
554 for (i
= first
; first
<= last
; i
++) {
555 retval
= target_read_u8(target
, lock_base
+ i
, &lock
);
556 if (retval
!= ERROR_OK
)
562 retval
= target_write_u8(target
, lock_base
+ i
, lock
);
563 if (retval
!= ERROR_OK
)
570 static int stm32x_protect_check(struct flash_bank
*bank
)
572 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
573 struct flash_sector
*prot_blocks
;
574 unsigned int num_prot_blocks
;
577 /* if it's the OTP bank, look at the lock bits there */
578 if (stm32x_is_otp(bank
))
579 return stm32x_otp_read_protect(bank
);
581 /* read write protection settings */
582 retval
= stm32x_read_options(bank
);
583 if (retval
!= ERROR_OK
) {
584 LOG_DEBUG("unable to read option bytes");
588 if (bank
->prot_blocks
) {
589 num_prot_blocks
= bank
->num_prot_blocks
;
590 prot_blocks
= bank
->prot_blocks
;
592 num_prot_blocks
= bank
->num_sectors
;
593 prot_blocks
= bank
->sectors
;
596 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++)
597 prot_blocks
[i
].is_protected
=
598 ~(stm32x_info
->option_bytes
.protection
>> i
) & 1;
603 static int stm32x_erase(struct flash_bank
*bank
, unsigned int first
,
606 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
607 struct target
*target
= bank
->target
;
609 if (stm32x_is_otp(bank
)) {
610 LOG_ERROR("Cannot erase OTP memory");
614 assert((first
<= last
) && (last
< bank
->num_sectors
));
616 if (bank
->target
->state
!= TARGET_HALTED
) {
617 LOG_ERROR("Target not halted");
618 return ERROR_TARGET_NOT_HALTED
;
622 retval
= stm32x_unlock_reg(target
);
623 if (retval
!= ERROR_OK
)
628 To erase a sector, follow the procedure below:
629 1. Check that no Flash memory operation is ongoing by checking the BSY bit in the
631 2. Set the SER bit and select the sector
632 you wish to erase (SNB) in the FLASH_CR register
633 3. Set the STRT bit in the FLASH_CR register
634 4. Wait for the BSY bit to be cleared
637 for (unsigned int i
= first
; i
<= last
; i
++) {
639 if (stm32x_info
->has_large_mem
&& i
>= (bank
->num_sectors
/ 2))
640 snb
= (i
- (bank
->num_sectors
/ 2)) | 0x10;
644 retval
= target_write_u32(target
,
645 stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_SER
| FLASH_SNB(snb
) | FLASH_STRT
);
646 if (retval
!= ERROR_OK
)
649 retval
= stm32x_wait_status_busy(bank
, FLASH_ERASE_TIMEOUT
);
650 if (retval
!= ERROR_OK
)
654 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_LOCK
);
655 if (retval
!= ERROR_OK
)
661 static int stm32x_protect(struct flash_bank
*bank
, int set
, unsigned int first
,
664 struct target
*target
= bank
->target
;
665 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
667 if (target
->state
!= TARGET_HALTED
) {
668 LOG_ERROR("Target not halted");
669 return ERROR_TARGET_NOT_HALTED
;
672 if (stm32x_is_otp(bank
)) {
674 return ERROR_COMMAND_ARGUMENT_INVALID
;
676 return stm32x_otp_protect(bank
, first
, last
);
679 /* read protection settings */
680 int retval
= stm32x_read_options(bank
);
681 if (retval
!= ERROR_OK
) {
682 LOG_DEBUG("unable to read option bytes");
686 for (unsigned int i
= first
; i
<= last
; i
++) {
688 stm32x_info
->option_bytes
.protection
&= ~(1 << i
);
690 stm32x_info
->option_bytes
.protection
|= (1 << i
);
693 retval
= stm32x_write_options(bank
);
694 if (retval
!= ERROR_OK
)
700 static int stm32x_write_block(struct flash_bank
*bank
, const uint8_t *buffer
,
701 uint32_t offset
, uint32_t count
)
703 struct target
*target
= bank
->target
;
704 uint32_t buffer_size
= 16384;
705 struct working_area
*write_algorithm
;
706 struct working_area
*source
;
707 uint32_t address
= bank
->base
+ offset
;
708 struct reg_param reg_params
[5];
709 struct armv7m_algorithm armv7m_info
;
710 int retval
= ERROR_OK
;
712 static const uint8_t stm32x_flash_write_code
[] = {
713 #include "../../../contrib/loaders/flash/stm32/stm32f2x.inc"
716 if (stm32x_is_otp(bank
) && !stm32x_is_otp_unlocked(bank
)) {
717 LOG_ERROR("OTP memory bank is disabled for write commands.");
721 if (target_alloc_working_area(target
, sizeof(stm32x_flash_write_code
),
722 &write_algorithm
) != ERROR_OK
) {
723 LOG_WARNING("no working area available, can't do block memory writes");
724 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
727 retval
= target_write_buffer(target
, write_algorithm
->address
,
728 sizeof(stm32x_flash_write_code
),
729 stm32x_flash_write_code
);
730 if (retval
!= ERROR_OK
) {
731 target_free_working_area(target
, write_algorithm
);
736 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
) {
738 if (buffer_size
<= 256) {
739 /* we already allocated the writing code, but failed to get a
740 * buffer, free the algorithm */
741 target_free_working_area(target
, write_algorithm
);
743 LOG_WARNING("no large enough working area available, can't do block memory writes");
744 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
748 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
749 armv7m_info
.core_mode
= ARM_MODE_THREAD
;
751 init_reg_param(®_params
[0], "r0", 32, PARAM_IN_OUT
); /* buffer start, status (out) */
752 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
); /* buffer end */
753 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
); /* target address */
754 init_reg_param(®_params
[3], "r3", 32, PARAM_OUT
); /* count (halfword-16bit) */
755 init_reg_param(®_params
[4], "r4", 32, PARAM_OUT
); /* flash base */
757 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
758 buf_set_u32(reg_params
[1].value
, 0, 32, source
->address
+ source
->size
);
759 buf_set_u32(reg_params
[2].value
, 0, 32, address
);
760 buf_set_u32(reg_params
[3].value
, 0, 32, count
);
761 buf_set_u32(reg_params
[4].value
, 0, 32, STM32_FLASH_BASE
);
763 retval
= target_run_flash_async_algorithm(target
, buffer
, count
, 2,
766 source
->address
, source
->size
,
767 write_algorithm
->address
, 0,
770 if (retval
== ERROR_FLASH_OPERATION_FAILED
) {
771 LOG_ERROR("error executing stm32x flash write algorithm");
773 uint32_t error
= buf_get_u32(reg_params
[0].value
, 0, 32) & FLASH_ERROR
;
775 if (error
& FLASH_WRPERR
)
776 LOG_ERROR("flash memory write protected");
779 LOG_ERROR("flash write failed = 0x%08" PRIx32
, error
);
780 /* Clear but report errors */
781 target_write_u32(target
, STM32_FLASH_SR
, error
);
786 target_free_working_area(target
, source
);
787 target_free_working_area(target
, write_algorithm
);
789 destroy_reg_param(®_params
[0]);
790 destroy_reg_param(®_params
[1]);
791 destroy_reg_param(®_params
[2]);
792 destroy_reg_param(®_params
[3]);
793 destroy_reg_param(®_params
[4]);
798 static int stm32x_write(struct flash_bank
*bank
, const uint8_t *buffer
,
799 uint32_t offset
, uint32_t count
)
801 struct target
*target
= bank
->target
;
802 uint32_t words_remaining
= (count
/ 2);
803 uint32_t bytes_remaining
= (count
& 0x00000001);
804 uint32_t address
= bank
->base
+ offset
;
805 uint32_t bytes_written
= 0;
808 if (bank
->target
->state
!= TARGET_HALTED
) {
809 LOG_ERROR("Target not halted");
810 return ERROR_TARGET_NOT_HALTED
;
814 LOG_WARNING("offset 0x%" PRIx32
" breaks required 2-byte alignment", offset
);
815 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
818 retval
= stm32x_unlock_reg(target
);
819 if (retval
!= ERROR_OK
)
822 /* multiple half words (2-byte) to be programmed? */
823 if (words_remaining
> 0) {
824 /* try using a block write */
825 retval
= stm32x_write_block(bank
, buffer
, offset
, words_remaining
);
826 if (retval
!= ERROR_OK
) {
827 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
) {
828 /* if block write failed (no sufficient working area),
829 * we use normal (slow) single dword accesses */
830 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
833 buffer
+= words_remaining
* 2;
834 address
+= words_remaining
* 2;
839 if ((retval
!= ERROR_OK
) && (retval
!= ERROR_TARGET_RESOURCE_NOT_AVAILABLE
))
844 The Flash memory programming sequence is as follows:
845 1. Check that no main Flash memory operation is ongoing by checking the BSY bit in the
847 2. Set the PG bit in the FLASH_CR register
848 3. Perform the data write operation(s) to the desired memory address (inside main
849 memory block or OTP area):
850 – – Half-word access in case of x16 parallelism
851 – Word access in case of x32 parallelism
854 Byte access in case of x8 parallelism
855 Double word access in case of x64 parallelism
856 Wait for the BSY bit to be cleared
858 while (words_remaining
> 0) {
859 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
860 FLASH_PG
| FLASH_PSIZE_16
);
861 if (retval
!= ERROR_OK
)
864 retval
= target_write_memory(target
, address
, 2, 1, buffer
+ bytes_written
);
865 if (retval
!= ERROR_OK
)
868 retval
= stm32x_wait_status_busy(bank
, FLASH_WRITE_TIMEOUT
);
869 if (retval
!= ERROR_OK
)
877 if (bytes_remaining
) {
878 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
879 FLASH_PG
| FLASH_PSIZE_8
);
880 if (retval
!= ERROR_OK
)
882 retval
= target_write_u8(target
, address
, buffer
[bytes_written
]);
883 if (retval
!= ERROR_OK
)
886 retval
= stm32x_wait_status_busy(bank
, FLASH_WRITE_TIMEOUT
);
887 if (retval
!= ERROR_OK
)
891 return target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
894 static void setup_sector(struct flash_bank
*bank
, unsigned int i
,
897 assert(i
< bank
->num_sectors
);
898 bank
->sectors
[i
].offset
= bank
->size
;
899 bank
->sectors
[i
].size
= size
;
900 bank
->size
+= bank
->sectors
[i
].size
;
901 LOG_DEBUG("sector %u: %ukBytes", i
, size
>> 10);
904 static uint16_t sector_size_in_kb(unsigned int i
, uint16_t max_sector_size_in_kb
)
907 return max_sector_size_in_kb
/ 8;
909 return max_sector_size_in_kb
/ 2;
910 return max_sector_size_in_kb
;
913 static unsigned int calculate_number_of_sectors(struct flash_bank
*bank
,
914 uint16_t flash_size_in_kb
,
915 uint16_t max_sector_size_in_kb
)
917 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
918 uint16_t remaining_flash_size_in_kb
= flash_size_in_kb
;
919 unsigned int nr_sectors
;
921 /* Dual Bank Flash has two identically-arranged banks of sectors. */
922 if (stm32x_info
->has_large_mem
)
923 remaining_flash_size_in_kb
/= 2;
925 for (nr_sectors
= 0; remaining_flash_size_in_kb
> 0; nr_sectors
++) {
926 uint16_t size_in_kb
= sector_size_in_kb(nr_sectors
, max_sector_size_in_kb
);
927 if (size_in_kb
> remaining_flash_size_in_kb
) {
928 LOG_INFO("%s Bank %" PRIu16
" kiB final sector clipped to %" PRIu16
" kiB",
929 stm32x_info
->has_large_mem
? "Dual" : "Single",
930 flash_size_in_kb
, remaining_flash_size_in_kb
);
931 remaining_flash_size_in_kb
= 0;
933 remaining_flash_size_in_kb
-= size_in_kb
;
937 return stm32x_info
->has_large_mem
? nr_sectors
*2 : nr_sectors
;
940 static void setup_bank(struct flash_bank
*bank
, unsigned int start
,
941 uint16_t flash_size_in_kb
, uint16_t max_sector_size_in_kb
)
943 uint16_t remaining_flash_size_in_kb
= flash_size_in_kb
;
944 unsigned int sector_index
= 0;
945 while (remaining_flash_size_in_kb
> 0) {
946 uint16_t size_in_kb
= sector_size_in_kb(sector_index
, max_sector_size_in_kb
);
947 if (size_in_kb
> remaining_flash_size_in_kb
) {
948 /* Clip last sector. Already warned in
949 * calculate_number_of_sectors. */
950 size_in_kb
= remaining_flash_size_in_kb
;
952 setup_sector(bank
, start
+ sector_index
, size_in_kb
* 1024);
953 remaining_flash_size_in_kb
-= size_in_kb
;
958 static int stm32x_get_device_id(struct flash_bank
*bank
, uint32_t *device_id
)
960 /* this checks for a stm32f4x errata issue where a
961 * stm32f2x DBGMCU_IDCODE is incorrectly returned.
962 * If the issue is detected target is forced to stm32f4x Rev A.
963 * Only effects Rev A silicon */
965 struct target
*target
= bank
->target
;
967 /* read stm32 device id register */
968 int retval
= target_read_u32(target
, 0xE0042000, device_id
);
969 if (retval
!= ERROR_OK
)
972 if ((*device_id
& 0xfff) == 0x411
973 && cortex_m_get_partno_safe(target
) == CORTEX_M4_PARTNO
) {
974 *device_id
&= ~((0xFFFF << 16) | 0xfff);
975 *device_id
|= (0x1000 << 16) | 0x413;
976 LOG_INFO("stm32f4x errata detected - fixing incorrect MCU_IDCODE");
981 static int stm32x_probe(struct flash_bank
*bank
)
983 struct target
*target
= bank
->target
;
984 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
985 unsigned int num_prot_blocks
, num_sectors
;
986 uint16_t flash_size_in_kb
;
987 uint16_t otp_size_in_b
;
988 uint16_t otp_sector_size
;
989 uint32_t flash_size_reg
= 0x1FFF7A22;
990 uint16_t max_sector_size_in_kb
= 128;
991 uint16_t max_flash_size_in_kb
;
993 uint32_t base_address
= 0x08000000;
995 stm32x_info
->probed
= false;
996 stm32x_info
->has_large_mem
= false;
997 stm32x_info
->has_boot_addr
= false;
998 stm32x_info
->has_extra_options
= false;
999 stm32x_info
->has_optcr2_pcrop
= false;
1000 stm32x_info
->protection_bits
= 12; /* max. number of nWRPi bits (in FLASH_OPTCR !!!) */
1001 num_prot_blocks
= 0;
1003 free(bank
->sectors
);
1004 bank
->num_sectors
= 0;
1005 bank
->sectors
= NULL
;
1007 free(bank
->prot_blocks
);
1008 bank
->num_prot_blocks
= 0;
1009 bank
->prot_blocks
= NULL
;
1011 if (!target_was_examined(target
)) {
1012 LOG_ERROR("Target not examined yet");
1013 return ERROR_TARGET_NOT_EXAMINED
;
1016 /* if explicitly called out as OTP bank, short circuit probe */
1017 if (stm32x_is_otp(bank
)) {
1018 if (stm32x_otp_is_f7(bank
)) {
1019 otp_size_in_b
= STM32F7_OTP_SIZE
;
1020 otp_sector_size
= STM32F7_OTP_SECTOR_SIZE
;
1022 otp_size_in_b
= STM32F2_OTP_SIZE
;
1023 otp_sector_size
= STM32F2_OTP_SECTOR_SIZE
;
1026 num_sectors
= otp_size_in_b
/ otp_sector_size
;
1027 LOG_INFO("flash size = %" PRIu16
" bytes", otp_size_in_b
);
1029 assert(num_sectors
> 0);
1031 bank
->num_sectors
= num_sectors
;
1032 bank
->sectors
= calloc(sizeof(struct flash_sector
), num_sectors
);
1034 if (stm32x_otp_is_f7(bank
))
1035 bank
->size
= STM32F7_OTP_SIZE
;
1037 bank
->size
= STM32F2_OTP_SIZE
;
1039 for (unsigned int i
= 0; i
< num_sectors
; i
++) {
1040 bank
->sectors
[i
].offset
= i
* otp_sector_size
;
1041 bank
->sectors
[i
].size
= otp_sector_size
;
1042 bank
->sectors
[i
].is_erased
= 1;
1043 bank
->sectors
[i
].is_protected
= 0;
1046 stm32x_info
->probed
= true;
1050 /* read stm32 device id register */
1051 int retval
= stm32x_get_device_id(bank
, &device_id
);
1052 if (retval
!= ERROR_OK
)
1054 LOG_INFO("device id = 0x%08" PRIx32
, device_id
);
1055 device_id
&= 0xfff; /* only bits 0-11 are used further on */
1057 /* set max flash size depending on family, id taken from AN2606 */
1058 switch (device_id
) {
1059 case 0x411: /* F20x/21x */
1060 case 0x413: /* F40x/41x */
1061 max_flash_size_in_kb
= 1024;
1064 case 0x419: /* F42x/43x */
1065 case 0x434: /* F469/479 */
1066 stm32x_info
->has_extra_options
= true;
1067 max_flash_size_in_kb
= 2048;
1070 case 0x423: /* F401xB/C */
1071 max_flash_size_in_kb
= 256;
1074 case 0x421: /* F446 */
1075 case 0x431: /* F411 */
1076 case 0x433: /* F401xD/E */
1077 case 0x441: /* F412 */
1078 max_flash_size_in_kb
= 512;
1081 case 0x458: /* F410 */
1082 max_flash_size_in_kb
= 128;
1085 case 0x449: /* F74x/75x */
1086 max_flash_size_in_kb
= 1024;
1087 max_sector_size_in_kb
= 256;
1088 flash_size_reg
= 0x1FF0F442;
1089 stm32x_info
->has_extra_options
= true;
1090 stm32x_info
->has_boot_addr
= true;
1093 case 0x451: /* F76x/77x */
1094 max_flash_size_in_kb
= 2048;
1095 max_sector_size_in_kb
= 256;
1096 flash_size_reg
= 0x1FF0F442;
1097 stm32x_info
->has_extra_options
= true;
1098 stm32x_info
->has_boot_addr
= true;
1101 case 0x452: /* F72x/73x */
1102 max_flash_size_in_kb
= 512;
1103 flash_size_reg
= 0x1FF07A22; /* yes, 0x1FF*0*7A22, not 0x1FF*F*7A22 */
1104 stm32x_info
->has_extra_options
= true;
1105 stm32x_info
->has_boot_addr
= true;
1106 stm32x_info
->has_optcr2_pcrop
= true;
1109 case 0x463: /* F413x/423x */
1110 max_flash_size_in_kb
= 1536;
1111 stm32x_info
->has_extra_options
= true;
1112 stm32x_info
->protection_bits
= 15;
1113 num_prot_blocks
= 15;
1117 LOG_WARNING("Cannot identify target as a STM32 family.");
1121 /* get flash size from target. */
1122 retval
= target_read_u16(target
, flash_size_reg
, &flash_size_in_kb
);
1124 /* failed reading flash size or flash size invalid (early silicon),
1125 * default to max target family */
1126 if (retval
!= ERROR_OK
|| flash_size_in_kb
== 0xffff || flash_size_in_kb
== 0) {
1127 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming %" PRIu16
"k flash",
1128 max_flash_size_in_kb
);
1129 flash_size_in_kb
= max_flash_size_in_kb
;
1132 /* if the user sets the size manually then ignore the probed value
1133 * this allows us to work around devices that have a invalid flash size register value */
1134 if (stm32x_info
->user_bank_size
) {
1135 LOG_INFO("ignoring flash probed value, using configured bank size");
1136 flash_size_in_kb
= stm32x_info
->user_bank_size
/ 1024;
1139 LOG_INFO("flash size = %" PRIu16
" kbytes", flash_size_in_kb
);
1141 /* did we assign flash size? */
1142 assert(flash_size_in_kb
!= 0xffff);
1144 /* F42x/43x/469/479 1024 kiByte devices have a dual bank option */
1145 if ((device_id
== 0x419) || (device_id
== 0x434)) {
1146 uint32_t optiondata
;
1147 retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &optiondata
);
1148 if (retval
!= ERROR_OK
) {
1149 LOG_DEBUG("unable to read option bytes");
1152 if ((flash_size_in_kb
> 1024) || (optiondata
& OPTCR_DB1M
)) {
1153 stm32x_info
->has_large_mem
= true;
1154 LOG_INFO("Dual Bank %" PRIu16
" kiB STM32F42x/43x/469/479 found", flash_size_in_kb
);
1156 stm32x_info
->has_large_mem
= false;
1157 LOG_INFO("Single Bank %" PRIu16
" kiB STM32F42x/43x/469/479 found", flash_size_in_kb
);
1161 /* F76x/77x devices have a dual bank option */
1162 if (device_id
== 0x451) {
1163 uint32_t optiondata
;
1164 retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &optiondata
);
1165 if (retval
!= ERROR_OK
) {
1166 LOG_DEBUG("unable to read option bytes");
1169 if (optiondata
& OPTCR_NDBANK
) {
1170 stm32x_info
->has_large_mem
= false;
1171 LOG_INFO("Single Bank %" PRIu16
" kiB STM32F76x/77x found", flash_size_in_kb
);
1173 stm32x_info
->has_large_mem
= true;
1174 max_sector_size_in_kb
>>= 1; /* sector size divided by 2 in dual-bank mode */
1175 LOG_INFO("Dual Bank %" PRIu16
" kiB STM32F76x/77x found", flash_size_in_kb
);
1179 /* calculate numbers of pages */
1180 unsigned int num_pages
= calculate_number_of_sectors(
1181 bank
, flash_size_in_kb
, max_sector_size_in_kb
);
1183 bank
->base
= base_address
;
1184 bank
->num_sectors
= num_pages
;
1185 bank
->sectors
= calloc(num_pages
, sizeof(struct flash_sector
));
1186 for (unsigned int i
= 0; i
< num_pages
; i
++) {
1187 bank
->sectors
[i
].is_erased
= -1;
1188 bank
->sectors
[i
].is_protected
= 0;
1191 LOG_DEBUG("allocated %u sectors", num_pages
);
1193 /* F76x/77x in dual bank mode */
1194 if ((device_id
== 0x451) && stm32x_info
->has_large_mem
)
1195 num_prot_blocks
= num_pages
>> 1;
1197 if (num_prot_blocks
) {
1198 bank
->prot_blocks
= malloc(sizeof(struct flash_sector
) * num_prot_blocks
);
1199 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++)
1200 bank
->prot_blocks
[i
].is_protected
= 0;
1201 LOG_DEBUG("allocated %u prot blocks", num_prot_blocks
);
1204 if (stm32x_info
->has_large_mem
) {
1206 setup_bank(bank
, 0, flash_size_in_kb
>> 1, max_sector_size_in_kb
);
1207 setup_bank(bank
, num_pages
>> 1, flash_size_in_kb
>> 1,
1208 max_sector_size_in_kb
);
1210 /* F767x/F77x in dual mode, one protection bit refers to two adjacent sectors */
1211 if (device_id
== 0x451) {
1212 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++) {
1213 bank
->prot_blocks
[i
].offset
= bank
->sectors
[i
<< 1].offset
;
1214 bank
->prot_blocks
[i
].size
= bank
->sectors
[i
<< 1].size
1215 + bank
->sectors
[(i
<< 1) + 1].size
;
1220 setup_bank(bank
, 0, flash_size_in_kb
, max_sector_size_in_kb
);
1222 /* F413/F423, sectors 14 and 15 share one common protection bit */
1223 if (device_id
== 0x463) {
1224 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++) {
1225 bank
->prot_blocks
[i
].offset
= bank
->sectors
[i
].offset
;
1226 bank
->prot_blocks
[i
].size
= bank
->sectors
[i
].size
;
1228 bank
->prot_blocks
[num_prot_blocks
- 1].size
<<= 1;
1231 bank
->num_prot_blocks
= num_prot_blocks
;
1232 assert((bank
->size
>> 10) == flash_size_in_kb
);
1234 stm32x_info
->probed
= true;
1238 static int stm32x_auto_probe(struct flash_bank
*bank
)
1240 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
1241 if (stm32x_info
->probed
)
1243 return stm32x_probe(bank
);
1246 static int get_stm32x_info(struct flash_bank
*bank
, struct command_invocation
*cmd
)
1248 uint32_t dbgmcu_idcode
;
1250 /* read stm32 device id register */
1251 int retval
= stm32x_get_device_id(bank
, &dbgmcu_idcode
);
1252 if (retval
!= ERROR_OK
)
1255 uint16_t device_id
= dbgmcu_idcode
& 0xfff;
1256 uint16_t rev_id
= dbgmcu_idcode
>> 16;
1257 const char *device_str
;
1258 const char *rev_str
= NULL
;
1260 switch (device_id
) {
1262 device_str
= "STM32F2xx";
1302 device_str
= "STM32F4xx";
1328 device_str
= "STM32F446";
1342 device_str
= "STM32F4xx (Low Power)";
1364 device_str
= "STM32F7[4|5]x";
1378 device_str
= "STM32F7[6|7]x";
1391 device_str
= "STM32F7[2|3]x";
1401 device_str
= "STM32F4[1|2]3";
1411 command_print_sameline(cmd
, "Cannot identify target as a STM32F2/4/7\n");
1416 command_print_sameline(cmd
, "%s - Rev: %s", device_str
, rev_str
);
1418 command_print_sameline(cmd
, "%s - Rev: unknown (0x%04" PRIx16
")", device_str
, rev_id
);
1423 COMMAND_HANDLER(stm32x_handle_lock_command
)
1425 struct target
*target
= NULL
;
1426 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1429 return ERROR_COMMAND_SYNTAX_ERROR
;
1431 struct flash_bank
*bank
;
1432 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1433 if (retval
!= ERROR_OK
)
1436 stm32x_info
= bank
->driver_priv
;
1437 target
= bank
->target
;
1439 if (target
->state
!= TARGET_HALTED
) {
1440 LOG_INFO("Target not halted");
1441 /* return ERROR_TARGET_NOT_HALTED; */
1444 if (stm32x_read_options(bank
) != ERROR_OK
) {
1445 command_print(CMD
, "%s failed to read options", bank
->driver
->name
);
1449 /* set readout protection */
1450 stm32x_info
->option_bytes
.RDP
= 0;
1452 if (stm32x_write_options(bank
) != ERROR_OK
) {
1453 command_print(CMD
, "%s failed to lock device", bank
->driver
->name
);
1457 command_print(CMD
, "%s locked", bank
->driver
->name
);
1462 COMMAND_HANDLER(stm32x_handle_unlock_command
)
1464 struct target
*target
= NULL
;
1465 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1468 return ERROR_COMMAND_SYNTAX_ERROR
;
1470 struct flash_bank
*bank
;
1471 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1472 if (retval
!= ERROR_OK
)
1475 stm32x_info
= bank
->driver_priv
;
1476 target
= bank
->target
;
1478 if (target
->state
!= TARGET_HALTED
) {
1479 LOG_INFO("Target not halted");
1480 /* return ERROR_TARGET_NOT_HALTED; */
1483 if (stm32x_read_options(bank
) != ERROR_OK
) {
1484 command_print(CMD
, "%s failed to read options", bank
->driver
->name
);
1488 /* clear readout protection and complementary option bytes
1489 * this will also force a device unlock if set */
1490 stm32x_info
->option_bytes
.RDP
= 0xAA;
1491 if (stm32x_info
->has_optcr2_pcrop
) {
1492 stm32x_info
->option_bytes
.optcr2_pcrop
= OPTCR2_PCROP_RDP
| (~1U << bank
->num_sectors
);
1495 if (stm32x_write_options(bank
) != ERROR_OK
) {
1496 command_print(CMD
, "%s failed to unlock device", bank
->driver
->name
);
1500 command_print(CMD
, "%s unlocked.\n"
1501 "INFO: a reset or power cycle is required "
1502 "for the new settings to take effect.", bank
->driver
->name
);
1507 static int stm32x_mass_erase(struct flash_bank
*bank
)
1511 struct target
*target
= bank
->target
;
1512 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1514 if (target
->state
!= TARGET_HALTED
) {
1515 LOG_ERROR("Target not halted");
1516 return ERROR_TARGET_NOT_HALTED
;
1519 stm32x_info
= bank
->driver_priv
;
1521 retval
= stm32x_unlock_reg(target
);
1522 if (retval
!= ERROR_OK
)
1525 /* mass erase flash memory */
1526 if (stm32x_info
->has_large_mem
)
1527 flash_mer
= FLASH_MER
| FLASH_MER1
;
1529 flash_mer
= FLASH_MER
;
1531 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), flash_mer
);
1532 if (retval
!= ERROR_OK
)
1534 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
1535 flash_mer
| FLASH_STRT
);
1536 if (retval
!= ERROR_OK
)
1539 retval
= stm32x_wait_status_busy(bank
, FLASH_MASS_ERASE_TIMEOUT
);
1540 if (retval
!= ERROR_OK
)
1543 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_LOCK
);
1544 if (retval
!= ERROR_OK
)
1550 COMMAND_HANDLER(stm32x_handle_mass_erase_command
)
1553 command_print(CMD
, "stm32x mass_erase <bank>");
1554 return ERROR_COMMAND_SYNTAX_ERROR
;
1557 struct flash_bank
*bank
;
1558 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1559 if (retval
!= ERROR_OK
)
1562 retval
= stm32x_mass_erase(bank
);
1563 if (retval
== ERROR_OK
) {
1564 command_print(CMD
, "stm32x mass erase complete");
1566 command_print(CMD
, "stm32x mass erase failed");
1572 COMMAND_HANDLER(stm32f2x_handle_options_read_command
)
1575 struct flash_bank
*bank
;
1576 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1578 if (CMD_ARGC
!= 1) {
1579 command_print(CMD
, "stm32f2x options_read <bank>");
1580 return ERROR_COMMAND_SYNTAX_ERROR
;
1583 retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1584 if (retval
!= ERROR_OK
)
1587 retval
= stm32x_read_options(bank
);
1588 if (retval
!= ERROR_OK
)
1591 stm32x_info
= bank
->driver_priv
;
1592 if (stm32x_info
->has_extra_options
) {
1593 if (stm32x_info
->has_boot_addr
) {
1594 uint32_t boot_addr
= stm32x_info
->option_bytes
.boot_addr
;
1596 command_print(CMD
, "stm32f2x user_options 0x%03" PRIX16
","
1597 " boot_add0 0x%04" PRIX32
", boot_add1 0x%04" PRIX32
,
1598 stm32x_info
->option_bytes
.user_options
,
1599 boot_addr
& 0xffff, (boot_addr
& 0xffff0000) >> 16);
1600 if (stm32x_info
->has_optcr2_pcrop
) {
1601 command_print(CMD
, "stm32f2x optcr2_pcrop 0x%08" PRIX32
,
1602 stm32x_info
->option_bytes
.optcr2_pcrop
);
1605 command_print(CMD
, "stm32f2x user_options 0x%03" PRIX16
,
1606 stm32x_info
->option_bytes
.user_options
);
1609 command_print(CMD
, "stm32f2x user_options 0x%02" PRIX16
,
1610 stm32x_info
->option_bytes
.user_options
);
1617 COMMAND_HANDLER(stm32f2x_handle_options_write_command
)
1620 struct flash_bank
*bank
;
1621 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1622 uint16_t user_options
, boot_addr0
, boot_addr1
, options_mask
;
1625 command_print(CMD
, "stm32f2x options_write <bank> ...");
1626 return ERROR_COMMAND_SYNTAX_ERROR
;
1629 retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1630 if (retval
!= ERROR_OK
)
1633 retval
= stm32x_read_options(bank
);
1634 if (retval
!= ERROR_OK
)
1637 stm32x_info
= bank
->driver_priv
;
1638 if (stm32x_info
->has_boot_addr
) {
1639 if (CMD_ARGC
!= 4) {
1640 command_print(CMD
, "stm32f2x options_write <bank> <user_options>"
1641 " <boot_addr0> <boot_addr1>");
1642 return ERROR_COMMAND_SYNTAX_ERROR
;
1644 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[2], boot_addr0
);
1645 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[3], boot_addr1
);
1646 stm32x_info
->option_bytes
.boot_addr
= boot_addr0
| (((uint32_t) boot_addr1
) << 16);
1648 if (CMD_ARGC
!= 2) {
1649 command_print(CMD
, "stm32f2x options_write <bank> <user_options>");
1650 return ERROR_COMMAND_SYNTAX_ERROR
;
1654 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[1], user_options
);
1655 options_mask
= !stm32x_info
->has_extra_options
? ~0xfc :
1656 ~(((0xf00 << (stm32x_info
->protection_bits
- 12)) | 0xff) & 0xffc);
1657 if (user_options
& options_mask
) {
1658 command_print(CMD
, "stm32f2x invalid user_options");
1659 return ERROR_COMMAND_ARGUMENT_INVALID
;
1662 stm32x_info
->option_bytes
.user_options
= user_options
;
1664 if (stm32x_write_options(bank
) != ERROR_OK
) {
1665 command_print(CMD
, "stm32f2x failed to write options");
1669 /* switching between single- and dual-bank modes requires re-probe */
1670 /* ... and reprogramming of whole flash */
1671 stm32x_info
->probed
= false;
1673 command_print(CMD
, "stm32f2x write options complete.\n"
1674 "INFO: a reset or power cycle is required "
1675 "for the new settings to take effect.");
1679 COMMAND_HANDLER(stm32f2x_handle_optcr2_write_command
)
1682 struct flash_bank
*bank
;
1683 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1684 uint32_t optcr2_pcrop
;
1686 if (CMD_ARGC
!= 2) {
1687 command_print(CMD
, "stm32f2x optcr2_write <bank> <optcr2_value>");
1688 return ERROR_COMMAND_SYNTAX_ERROR
;
1691 retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1692 if (retval
!= ERROR_OK
)
1695 stm32x_info
= bank
->driver_priv
;
1696 if (!stm32x_info
->has_optcr2_pcrop
) {
1697 command_print(CMD
, "no optcr2 register");
1698 return ERROR_COMMAND_ARGUMENT_INVALID
;
1701 command_print(CMD
, "INFO: To disable PCROP, set PCROP_RDP"
1702 " with PCROPi bits STILL SET, then\nlock device and"
1703 " finally unlock it. Clears PCROP and mass erases flash.");
1705 retval
= stm32x_read_options(bank
);
1706 if (retval
!= ERROR_OK
)
1709 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], optcr2_pcrop
);
1710 stm32x_info
->option_bytes
.optcr2_pcrop
= optcr2_pcrop
;
1712 if (stm32x_write_options(bank
) != ERROR_OK
) {
1713 command_print(CMD
, "stm32f2x failed to write options");
1717 command_print(CMD
, "stm32f2x optcr2_write complete.");
1721 COMMAND_HANDLER(stm32x_handle_otp_command
)
1724 command_print(CMD
, "stm32x otp <bank> (enable|disable|show)");
1725 return ERROR_COMMAND_SYNTAX_ERROR
;
1728 struct flash_bank
*bank
;
1729 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1730 if (retval
!= ERROR_OK
)
1732 if (stm32x_is_otp(bank
)) {
1733 if (strcmp(CMD_ARGV
[1], "enable") == 0) {
1734 stm32x_otp_enable(bank
);
1735 } else if (strcmp(CMD_ARGV
[1], "disable") == 0) {
1736 stm32x_otp_disable(bank
);
1737 } else if (strcmp(CMD_ARGV
[1], "show") == 0) {
1739 "OTP memory bank #%u is %s for write commands.",
1741 stm32x_is_otp_unlocked(bank
) ? "enabled" : "disabled");
1743 return ERROR_COMMAND_SYNTAX_ERROR
;
1746 command_print(CMD
, "Failed: not an OTP bank.");
1752 static const struct command_registration stm32f2x_exec_command_handlers
[] = {
1755 .handler
= stm32x_handle_lock_command
,
1756 .mode
= COMMAND_EXEC
,
1758 .help
= "Lock entire flash device.",
1762 .handler
= stm32x_handle_unlock_command
,
1763 .mode
= COMMAND_EXEC
,
1765 .help
= "Unlock entire protected flash device.",
1768 .name
= "mass_erase",
1769 .handler
= stm32x_handle_mass_erase_command
,
1770 .mode
= COMMAND_EXEC
,
1772 .help
= "Erase entire flash device.",
1775 .name
= "options_read",
1776 .handler
= stm32f2x_handle_options_read_command
,
1777 .mode
= COMMAND_EXEC
,
1779 .help
= "Read and display device option bytes.",
1782 .name
= "options_write",
1783 .handler
= stm32f2x_handle_options_write_command
,
1784 .mode
= COMMAND_EXEC
,
1785 .usage
= "bank_id user_options [ boot_add0 boot_add1 ]",
1786 .help
= "Write option bytes",
1789 .name
= "optcr2_write",
1790 .handler
= stm32f2x_handle_optcr2_write_command
,
1791 .mode
= COMMAND_EXEC
,
1792 .usage
= "bank_id optcr2",
1793 .help
= "Write optcr2 word",
1797 .handler
= stm32x_handle_otp_command
,
1798 .mode
= COMMAND_EXEC
,
1800 .help
= "OTP (One Time Programmable) memory write enable/disable.",
1802 COMMAND_REGISTRATION_DONE
1805 static const struct command_registration stm32f2x_command_handlers
[] = {
1808 .mode
= COMMAND_ANY
,
1809 .help
= "stm32f2x flash command group",
1811 .chain
= stm32f2x_exec_command_handlers
,
1813 COMMAND_REGISTRATION_DONE
1816 const struct flash_driver stm32f2x_flash
= {
1818 .commands
= stm32f2x_command_handlers
,
1819 .flash_bank_command
= stm32x_flash_bank_command
,
1820 .erase
= stm32x_erase
,
1821 .protect
= stm32x_protect
,
1822 .write
= stm32x_write
,
1823 .read
= default_flash_read
,
1824 .probe
= stm32x_probe
,
1825 .auto_probe
= stm32x_auto_probe
,
1826 .erase_check
= default_flash_blank_check
,
1827 .protect_check
= stm32x_protect_check
,
1828 .info
= get_stm32x_info
,
1829 .free_driver_priv
= default_flash_free_driver_priv
,
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