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) {
860 memcpy(&value
, buffer
+ bytes_written
, sizeof(uint16_t));
862 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
863 FLASH_PG
| FLASH_PSIZE_16
);
864 if (retval
!= ERROR_OK
)
867 retval
= target_write_u16(target
, address
, value
);
868 if (retval
!= ERROR_OK
)
871 retval
= stm32x_wait_status_busy(bank
, FLASH_WRITE_TIMEOUT
);
872 if (retval
!= ERROR_OK
)
880 if (bytes_remaining
) {
881 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
882 FLASH_PG
| FLASH_PSIZE_8
);
883 if (retval
!= ERROR_OK
)
885 retval
= target_write_u8(target
, address
, buffer
[bytes_written
]);
886 if (retval
!= ERROR_OK
)
889 retval
= stm32x_wait_status_busy(bank
, FLASH_WRITE_TIMEOUT
);
890 if (retval
!= ERROR_OK
)
894 return target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
897 static void setup_sector(struct flash_bank
*bank
, unsigned int i
,
900 assert(i
< bank
->num_sectors
);
901 bank
->sectors
[i
].offset
= bank
->size
;
902 bank
->sectors
[i
].size
= size
;
903 bank
->size
+= bank
->sectors
[i
].size
;
904 LOG_DEBUG("sector %u: %ukBytes", i
, size
>> 10);
907 static uint16_t sector_size_in_kb(unsigned int i
, uint16_t max_sector_size_in_kb
)
910 return max_sector_size_in_kb
/ 8;
912 return max_sector_size_in_kb
/ 2;
913 return max_sector_size_in_kb
;
916 static unsigned int calculate_number_of_sectors(struct flash_bank
*bank
,
917 uint16_t flash_size_in_kb
,
918 uint16_t max_sector_size_in_kb
)
920 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
921 uint16_t remaining_flash_size_in_kb
= flash_size_in_kb
;
922 unsigned int nr_sectors
;
924 /* Dual Bank Flash has two identically-arranged banks of sectors. */
925 if (stm32x_info
->has_large_mem
)
926 remaining_flash_size_in_kb
/= 2;
928 for (nr_sectors
= 0; remaining_flash_size_in_kb
> 0; nr_sectors
++) {
929 uint16_t size_in_kb
= sector_size_in_kb(nr_sectors
, max_sector_size_in_kb
);
930 if (size_in_kb
> remaining_flash_size_in_kb
) {
931 LOG_INFO("%s Bank %" PRIu16
" kiB final sector clipped to %" PRIu16
" kiB",
932 stm32x_info
->has_large_mem
? "Dual" : "Single",
933 flash_size_in_kb
, remaining_flash_size_in_kb
);
934 remaining_flash_size_in_kb
= 0;
936 remaining_flash_size_in_kb
-= size_in_kb
;
940 return stm32x_info
->has_large_mem
? nr_sectors
*2 : nr_sectors
;
943 static void setup_bank(struct flash_bank
*bank
, unsigned int start
,
944 uint16_t flash_size_in_kb
, uint16_t max_sector_size_in_kb
)
946 uint16_t remaining_flash_size_in_kb
= flash_size_in_kb
;
947 unsigned int sector_index
= 0;
948 while (remaining_flash_size_in_kb
> 0) {
949 uint16_t size_in_kb
= sector_size_in_kb(sector_index
, max_sector_size_in_kb
);
950 if (size_in_kb
> remaining_flash_size_in_kb
) {
951 /* Clip last sector. Already warned in
952 * calculate_number_of_sectors. */
953 size_in_kb
= remaining_flash_size_in_kb
;
955 setup_sector(bank
, start
+ sector_index
, size_in_kb
* 1024);
956 remaining_flash_size_in_kb
-= size_in_kb
;
961 static int stm32x_get_device_id(struct flash_bank
*bank
, uint32_t *device_id
)
963 /* this checks for a stm32f4x errata issue where a
964 * stm32f2x DBGMCU_IDCODE is incorrectly returned.
965 * If the issue is detected target is forced to stm32f4x Rev A.
966 * Only effects Rev A silicon */
968 struct target
*target
= bank
->target
;
970 /* read stm32 device id register */
971 int retval
= target_read_u32(target
, 0xE0042000, device_id
);
972 if (retval
!= ERROR_OK
)
975 if ((*device_id
& 0xfff) == 0x411
976 && cortex_m_get_partno_safe(target
) == CORTEX_M4_PARTNO
) {
977 *device_id
&= ~((0xFFFF << 16) | 0xfff);
978 *device_id
|= (0x1000 << 16) | 0x413;
979 LOG_INFO("stm32f4x errata detected - fixing incorrect MCU_IDCODE");
984 static int stm32x_probe(struct flash_bank
*bank
)
986 struct target
*target
= bank
->target
;
987 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
988 unsigned int num_prot_blocks
, num_sectors
;
989 uint16_t flash_size_in_kb
;
990 uint16_t otp_size_in_b
;
991 uint16_t otp_sector_size
;
992 uint32_t flash_size_reg
= 0x1FFF7A22;
993 uint16_t max_sector_size_in_kb
= 128;
994 uint16_t max_flash_size_in_kb
;
996 uint32_t base_address
= 0x08000000;
998 stm32x_info
->probed
= false;
999 stm32x_info
->has_large_mem
= false;
1000 stm32x_info
->has_boot_addr
= false;
1001 stm32x_info
->has_extra_options
= false;
1002 stm32x_info
->has_optcr2_pcrop
= false;
1003 stm32x_info
->protection_bits
= 12; /* max. number of nWRPi bits (in FLASH_OPTCR !!!) */
1004 num_prot_blocks
= 0;
1006 free(bank
->sectors
);
1007 bank
->num_sectors
= 0;
1008 bank
->sectors
= NULL
;
1010 free(bank
->prot_blocks
);
1011 bank
->num_prot_blocks
= 0;
1012 bank
->prot_blocks
= NULL
;
1014 if (!target_was_examined(target
)) {
1015 LOG_ERROR("Target not examined yet");
1016 return ERROR_TARGET_NOT_EXAMINED
;
1019 /* if explicitly called out as OTP bank, short circuit probe */
1020 if (stm32x_is_otp(bank
)) {
1021 if (stm32x_otp_is_f7(bank
)) {
1022 otp_size_in_b
= STM32F7_OTP_SIZE
;
1023 otp_sector_size
= STM32F7_OTP_SECTOR_SIZE
;
1025 otp_size_in_b
= STM32F2_OTP_SIZE
;
1026 otp_sector_size
= STM32F2_OTP_SECTOR_SIZE
;
1029 num_sectors
= otp_size_in_b
/ otp_sector_size
;
1030 LOG_INFO("flash size = %" PRIu16
" bytes", otp_size_in_b
);
1032 assert(num_sectors
> 0);
1034 bank
->num_sectors
= num_sectors
;
1035 bank
->sectors
= calloc(sizeof(struct flash_sector
), num_sectors
);
1037 if (stm32x_otp_is_f7(bank
))
1038 bank
->size
= STM32F7_OTP_SIZE
;
1040 bank
->size
= STM32F2_OTP_SIZE
;
1042 for (unsigned int i
= 0; i
< num_sectors
; i
++) {
1043 bank
->sectors
[i
].offset
= i
* otp_sector_size
;
1044 bank
->sectors
[i
].size
= otp_sector_size
;
1045 bank
->sectors
[i
].is_erased
= 1;
1046 bank
->sectors
[i
].is_protected
= 0;
1049 stm32x_info
->probed
= true;
1053 /* read stm32 device id register */
1054 int retval
= stm32x_get_device_id(bank
, &device_id
);
1055 if (retval
!= ERROR_OK
)
1057 LOG_INFO("device id = 0x%08" PRIx32
, device_id
);
1058 device_id
&= 0xfff; /* only bits 0-11 are used further on */
1060 /* set max flash size depending on family, id taken from AN2606 */
1061 switch (device_id
) {
1062 case 0x411: /* F20x/21x */
1063 case 0x413: /* F40x/41x */
1064 max_flash_size_in_kb
= 1024;
1067 case 0x419: /* F42x/43x */
1068 case 0x434: /* F469/479 */
1069 stm32x_info
->has_extra_options
= true;
1070 max_flash_size_in_kb
= 2048;
1073 case 0x423: /* F401xB/C */
1074 max_flash_size_in_kb
= 256;
1077 case 0x421: /* F446 */
1078 case 0x431: /* F411 */
1079 case 0x433: /* F401xD/E */
1080 case 0x441: /* F412 */
1081 max_flash_size_in_kb
= 512;
1084 case 0x458: /* F410 */
1085 max_flash_size_in_kb
= 128;
1088 case 0x449: /* F74x/75x */
1089 max_flash_size_in_kb
= 1024;
1090 max_sector_size_in_kb
= 256;
1091 flash_size_reg
= 0x1FF0F442;
1092 stm32x_info
->has_extra_options
= true;
1093 stm32x_info
->has_boot_addr
= true;
1096 case 0x451: /* F76x/77x */
1097 max_flash_size_in_kb
= 2048;
1098 max_sector_size_in_kb
= 256;
1099 flash_size_reg
= 0x1FF0F442;
1100 stm32x_info
->has_extra_options
= true;
1101 stm32x_info
->has_boot_addr
= true;
1104 case 0x452: /* F72x/73x */
1105 max_flash_size_in_kb
= 512;
1106 flash_size_reg
= 0x1FF07A22; /* yes, 0x1FF*0*7A22, not 0x1FF*F*7A22 */
1107 stm32x_info
->has_extra_options
= true;
1108 stm32x_info
->has_boot_addr
= true;
1109 stm32x_info
->has_optcr2_pcrop
= true;
1112 case 0x463: /* F413x/423x */
1113 max_flash_size_in_kb
= 1536;
1114 stm32x_info
->has_extra_options
= true;
1115 stm32x_info
->protection_bits
= 15;
1116 num_prot_blocks
= 15;
1120 LOG_WARNING("Cannot identify target as a STM32 family.");
1124 /* get flash size from target. */
1125 retval
= target_read_u16(target
, flash_size_reg
, &flash_size_in_kb
);
1127 /* failed reading flash size or flash size invalid (early silicon),
1128 * default to max target family */
1129 if (retval
!= ERROR_OK
|| flash_size_in_kb
== 0xffff || flash_size_in_kb
== 0) {
1130 LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming %" PRIu16
"k flash",
1131 max_flash_size_in_kb
);
1132 flash_size_in_kb
= max_flash_size_in_kb
;
1135 /* if the user sets the size manually then ignore the probed value
1136 * this allows us to work around devices that have a invalid flash size register value */
1137 if (stm32x_info
->user_bank_size
) {
1138 LOG_INFO("ignoring flash probed value, using configured bank size");
1139 flash_size_in_kb
= stm32x_info
->user_bank_size
/ 1024;
1142 LOG_INFO("flash size = %" PRIu16
" kbytes", flash_size_in_kb
);
1144 /* did we assign flash size? */
1145 assert(flash_size_in_kb
!= 0xffff);
1147 /* F42x/43x/469/479 1024 kiByte devices have a dual bank option */
1148 if ((device_id
== 0x419) || (device_id
== 0x434)) {
1149 uint32_t optiondata
;
1150 retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &optiondata
);
1151 if (retval
!= ERROR_OK
) {
1152 LOG_DEBUG("unable to read option bytes");
1155 if ((flash_size_in_kb
> 1024) || (optiondata
& OPTCR_DB1M
)) {
1156 stm32x_info
->has_large_mem
= true;
1157 LOG_INFO("Dual Bank %" PRIu16
" kiB STM32F42x/43x/469/479 found", flash_size_in_kb
);
1159 stm32x_info
->has_large_mem
= false;
1160 LOG_INFO("Single Bank %" PRIu16
" kiB STM32F42x/43x/469/479 found", flash_size_in_kb
);
1164 /* F76x/77x devices have a dual bank option */
1165 if (device_id
== 0x451) {
1166 uint32_t optiondata
;
1167 retval
= target_read_u32(target
, STM32_FLASH_OPTCR
, &optiondata
);
1168 if (retval
!= ERROR_OK
) {
1169 LOG_DEBUG("unable to read option bytes");
1172 if (optiondata
& OPTCR_NDBANK
) {
1173 stm32x_info
->has_large_mem
= false;
1174 LOG_INFO("Single Bank %" PRIu16
" kiB STM32F76x/77x found", flash_size_in_kb
);
1176 stm32x_info
->has_large_mem
= true;
1177 max_sector_size_in_kb
>>= 1; /* sector size divided by 2 in dual-bank mode */
1178 LOG_INFO("Dual Bank %" PRIu16
" kiB STM32F76x/77x found", flash_size_in_kb
);
1182 /* calculate numbers of pages */
1183 unsigned int num_pages
= calculate_number_of_sectors(
1184 bank
, flash_size_in_kb
, max_sector_size_in_kb
);
1186 bank
->base
= base_address
;
1187 bank
->num_sectors
= num_pages
;
1188 bank
->sectors
= calloc(num_pages
, sizeof(struct flash_sector
));
1189 for (unsigned int i
= 0; i
< num_pages
; i
++) {
1190 bank
->sectors
[i
].is_erased
= -1;
1191 bank
->sectors
[i
].is_protected
= 0;
1194 LOG_DEBUG("allocated %u sectors", num_pages
);
1196 /* F76x/77x in dual bank mode */
1197 if ((device_id
== 0x451) && stm32x_info
->has_large_mem
)
1198 num_prot_blocks
= num_pages
>> 1;
1200 if (num_prot_blocks
) {
1201 bank
->prot_blocks
= malloc(sizeof(struct flash_sector
) * num_prot_blocks
);
1202 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++)
1203 bank
->prot_blocks
[i
].is_protected
= 0;
1204 LOG_DEBUG("allocated %u prot blocks", num_prot_blocks
);
1207 if (stm32x_info
->has_large_mem
) {
1209 setup_bank(bank
, 0, flash_size_in_kb
>> 1, max_sector_size_in_kb
);
1210 setup_bank(bank
, num_pages
>> 1, flash_size_in_kb
>> 1,
1211 max_sector_size_in_kb
);
1213 /* F767x/F77x in dual mode, one protection bit refers to two adjacent sectors */
1214 if (device_id
== 0x451) {
1215 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++) {
1216 bank
->prot_blocks
[i
].offset
= bank
->sectors
[i
<< 1].offset
;
1217 bank
->prot_blocks
[i
].size
= bank
->sectors
[i
<< 1].size
1218 + bank
->sectors
[(i
<< 1) + 1].size
;
1223 setup_bank(bank
, 0, flash_size_in_kb
, max_sector_size_in_kb
);
1225 /* F413/F423, sectors 14 and 15 share one common protection bit */
1226 if (device_id
== 0x463) {
1227 for (unsigned int i
= 0; i
< num_prot_blocks
; i
++) {
1228 bank
->prot_blocks
[i
].offset
= bank
->sectors
[i
].offset
;
1229 bank
->prot_blocks
[i
].size
= bank
->sectors
[i
].size
;
1231 bank
->prot_blocks
[num_prot_blocks
- 1].size
<<= 1;
1234 bank
->num_prot_blocks
= num_prot_blocks
;
1235 assert((bank
->size
>> 10) == flash_size_in_kb
);
1237 stm32x_info
->probed
= true;
1241 static int stm32x_auto_probe(struct flash_bank
*bank
)
1243 struct stm32x_flash_bank
*stm32x_info
= bank
->driver_priv
;
1244 if (stm32x_info
->probed
)
1246 return stm32x_probe(bank
);
1249 static int get_stm32x_info(struct flash_bank
*bank
, struct command_invocation
*cmd
)
1251 uint32_t dbgmcu_idcode
;
1253 /* read stm32 device id register */
1254 int retval
= stm32x_get_device_id(bank
, &dbgmcu_idcode
);
1255 if (retval
!= ERROR_OK
)
1258 uint16_t device_id
= dbgmcu_idcode
& 0xfff;
1259 uint16_t rev_id
= dbgmcu_idcode
>> 16;
1260 const char *device_str
;
1261 const char *rev_str
= NULL
;
1263 switch (device_id
) {
1265 device_str
= "STM32F2xx";
1305 device_str
= "STM32F4xx";
1331 device_str
= "STM32F446";
1345 device_str
= "STM32F4xx (Low Power)";
1367 device_str
= "STM32F7[4|5]x";
1381 device_str
= "STM32F7[6|7]x";
1394 device_str
= "STM32F7[2|3]x";
1404 device_str
= "STM32F4[1|2]3";
1414 command_print_sameline(cmd
, "Cannot identify target as a STM32F2/4/7\n");
1419 command_print_sameline(cmd
, "%s - Rev: %s", device_str
, rev_str
);
1421 command_print_sameline(cmd
, "%s - Rev: unknown (0x%04" PRIx16
")", device_str
, rev_id
);
1426 COMMAND_HANDLER(stm32x_handle_lock_command
)
1428 struct target
*target
= NULL
;
1429 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1432 return ERROR_COMMAND_SYNTAX_ERROR
;
1434 struct flash_bank
*bank
;
1435 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1436 if (retval
!= ERROR_OK
)
1439 stm32x_info
= bank
->driver_priv
;
1440 target
= bank
->target
;
1442 if (target
->state
!= TARGET_HALTED
) {
1443 LOG_INFO("Target not halted");
1444 /* return ERROR_TARGET_NOT_HALTED; */
1447 if (stm32x_read_options(bank
) != ERROR_OK
) {
1448 command_print(CMD
, "%s failed to read options", bank
->driver
->name
);
1452 /* set readout protection */
1453 stm32x_info
->option_bytes
.RDP
= 0;
1455 if (stm32x_write_options(bank
) != ERROR_OK
) {
1456 command_print(CMD
, "%s failed to lock device", bank
->driver
->name
);
1460 command_print(CMD
, "%s locked", bank
->driver
->name
);
1465 COMMAND_HANDLER(stm32x_handle_unlock_command
)
1467 struct target
*target
= NULL
;
1468 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1471 return ERROR_COMMAND_SYNTAX_ERROR
;
1473 struct flash_bank
*bank
;
1474 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1475 if (retval
!= ERROR_OK
)
1478 stm32x_info
= bank
->driver_priv
;
1479 target
= bank
->target
;
1481 if (target
->state
!= TARGET_HALTED
) {
1482 LOG_INFO("Target not halted");
1483 /* return ERROR_TARGET_NOT_HALTED; */
1486 if (stm32x_read_options(bank
) != ERROR_OK
) {
1487 command_print(CMD
, "%s failed to read options", bank
->driver
->name
);
1491 /* clear readout protection and complementary option bytes
1492 * this will also force a device unlock if set */
1493 stm32x_info
->option_bytes
.RDP
= 0xAA;
1494 if (stm32x_info
->has_optcr2_pcrop
) {
1495 stm32x_info
->option_bytes
.optcr2_pcrop
= OPTCR2_PCROP_RDP
| (~1U << bank
->num_sectors
);
1498 if (stm32x_write_options(bank
) != ERROR_OK
) {
1499 command_print(CMD
, "%s failed to unlock device", bank
->driver
->name
);
1503 command_print(CMD
, "%s unlocked.\n"
1504 "INFO: a reset or power cycle is required "
1505 "for the new settings to take effect.", bank
->driver
->name
);
1510 static int stm32x_mass_erase(struct flash_bank
*bank
)
1514 struct target
*target
= bank
->target
;
1515 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1517 if (target
->state
!= TARGET_HALTED
) {
1518 LOG_ERROR("Target not halted");
1519 return ERROR_TARGET_NOT_HALTED
;
1522 stm32x_info
= bank
->driver_priv
;
1524 retval
= stm32x_unlock_reg(target
);
1525 if (retval
!= ERROR_OK
)
1528 /* mass erase flash memory */
1529 if (stm32x_info
->has_large_mem
)
1530 flash_mer
= FLASH_MER
| FLASH_MER1
;
1532 flash_mer
= FLASH_MER
;
1534 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), flash_mer
);
1535 if (retval
!= ERROR_OK
)
1537 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
),
1538 flash_mer
| FLASH_STRT
);
1539 if (retval
!= ERROR_OK
)
1542 retval
= stm32x_wait_status_busy(bank
, FLASH_MASS_ERASE_TIMEOUT
);
1543 if (retval
!= ERROR_OK
)
1546 retval
= target_write_u32(target
, stm32x_get_flash_reg(bank
, STM32_FLASH_CR
), FLASH_LOCK
);
1547 if (retval
!= ERROR_OK
)
1553 COMMAND_HANDLER(stm32x_handle_mass_erase_command
)
1556 command_print(CMD
, "stm32x mass_erase <bank>");
1557 return ERROR_COMMAND_SYNTAX_ERROR
;
1560 struct flash_bank
*bank
;
1561 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1562 if (retval
!= ERROR_OK
)
1565 retval
= stm32x_mass_erase(bank
);
1566 if (retval
== ERROR_OK
) {
1567 command_print(CMD
, "stm32x mass erase complete");
1569 command_print(CMD
, "stm32x mass erase failed");
1575 COMMAND_HANDLER(stm32f2x_handle_options_read_command
)
1578 struct flash_bank
*bank
;
1579 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1581 if (CMD_ARGC
!= 1) {
1582 command_print(CMD
, "stm32f2x options_read <bank>");
1583 return ERROR_COMMAND_SYNTAX_ERROR
;
1586 retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1587 if (retval
!= ERROR_OK
)
1590 retval
= stm32x_read_options(bank
);
1591 if (retval
!= ERROR_OK
)
1594 stm32x_info
= bank
->driver_priv
;
1595 if (stm32x_info
->has_extra_options
) {
1596 if (stm32x_info
->has_boot_addr
) {
1597 uint32_t boot_addr
= stm32x_info
->option_bytes
.boot_addr
;
1599 command_print(CMD
, "stm32f2x user_options 0x%03" PRIX16
","
1600 " boot_add0 0x%04" PRIX32
", boot_add1 0x%04" PRIX32
,
1601 stm32x_info
->option_bytes
.user_options
,
1602 boot_addr
& 0xffff, (boot_addr
& 0xffff0000) >> 16);
1603 if (stm32x_info
->has_optcr2_pcrop
) {
1604 command_print(CMD
, "stm32f2x optcr2_pcrop 0x%08" PRIX32
,
1605 stm32x_info
->option_bytes
.optcr2_pcrop
);
1608 command_print(CMD
, "stm32f2x user_options 0x%03" PRIX16
,
1609 stm32x_info
->option_bytes
.user_options
);
1612 command_print(CMD
, "stm32f2x user_options 0x%02" PRIX16
,
1613 stm32x_info
->option_bytes
.user_options
);
1620 COMMAND_HANDLER(stm32f2x_handle_options_write_command
)
1623 struct flash_bank
*bank
;
1624 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1625 uint16_t user_options
, boot_addr0
, boot_addr1
, options_mask
;
1628 command_print(CMD
, "stm32f2x options_write <bank> ...");
1629 return ERROR_COMMAND_SYNTAX_ERROR
;
1632 retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1633 if (retval
!= ERROR_OK
)
1636 retval
= stm32x_read_options(bank
);
1637 if (retval
!= ERROR_OK
)
1640 stm32x_info
= bank
->driver_priv
;
1641 if (stm32x_info
->has_boot_addr
) {
1642 if (CMD_ARGC
!= 4) {
1643 command_print(CMD
, "stm32f2x options_write <bank> <user_options>"
1644 " <boot_addr0> <boot_addr1>");
1645 return ERROR_COMMAND_SYNTAX_ERROR
;
1647 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[2], boot_addr0
);
1648 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[3], boot_addr1
);
1649 stm32x_info
->option_bytes
.boot_addr
= boot_addr0
| (((uint32_t) boot_addr1
) << 16);
1651 if (CMD_ARGC
!= 2) {
1652 command_print(CMD
, "stm32f2x options_write <bank> <user_options>");
1653 return ERROR_COMMAND_SYNTAX_ERROR
;
1657 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[1], user_options
);
1658 options_mask
= !stm32x_info
->has_extra_options
? ~0xfc :
1659 ~(((0xf00 << (stm32x_info
->protection_bits
- 12)) | 0xff) & 0xffc);
1660 if (user_options
& options_mask
) {
1661 command_print(CMD
, "stm32f2x invalid user_options");
1662 return ERROR_COMMAND_ARGUMENT_INVALID
;
1665 stm32x_info
->option_bytes
.user_options
= user_options
;
1667 if (stm32x_write_options(bank
) != ERROR_OK
) {
1668 command_print(CMD
, "stm32f2x failed to write options");
1672 /* switching between single- and dual-bank modes requires re-probe */
1673 /* ... and reprogramming of whole flash */
1674 stm32x_info
->probed
= false;
1676 command_print(CMD
, "stm32f2x write options complete.\n"
1677 "INFO: a reset or power cycle is required "
1678 "for the new settings to take effect.");
1682 COMMAND_HANDLER(stm32f2x_handle_optcr2_write_command
)
1685 struct flash_bank
*bank
;
1686 struct stm32x_flash_bank
*stm32x_info
= NULL
;
1687 uint32_t optcr2_pcrop
;
1689 if (CMD_ARGC
!= 2) {
1690 command_print(CMD
, "stm32f2x optcr2_write <bank> <optcr2_value>");
1691 return ERROR_COMMAND_SYNTAX_ERROR
;
1694 retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1695 if (retval
!= ERROR_OK
)
1698 stm32x_info
= bank
->driver_priv
;
1699 if (!stm32x_info
->has_optcr2_pcrop
) {
1700 command_print(CMD
, "no optcr2 register");
1701 return ERROR_COMMAND_ARGUMENT_INVALID
;
1704 command_print(CMD
, "INFO: To disable PCROP, set PCROP_RDP"
1705 " with PCROPi bits STILL SET, then\nlock device and"
1706 " finally unlock it. Clears PCROP and mass erases flash.");
1708 retval
= stm32x_read_options(bank
);
1709 if (retval
!= ERROR_OK
)
1712 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], optcr2_pcrop
);
1713 stm32x_info
->option_bytes
.optcr2_pcrop
= optcr2_pcrop
;
1715 if (stm32x_write_options(bank
) != ERROR_OK
) {
1716 command_print(CMD
, "stm32f2x failed to write options");
1720 command_print(CMD
, "stm32f2x optcr2_write complete.");
1724 COMMAND_HANDLER(stm32x_handle_otp_command
)
1727 command_print(CMD
, "stm32x otp <bank> (enable|disable|show)");
1728 return ERROR_COMMAND_SYNTAX_ERROR
;
1731 struct flash_bank
*bank
;
1732 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
1733 if (retval
!= ERROR_OK
)
1735 if (stm32x_is_otp(bank
)) {
1736 if (strcmp(CMD_ARGV
[1], "enable") == 0) {
1737 stm32x_otp_enable(bank
);
1738 } else if (strcmp(CMD_ARGV
[1], "disable") == 0) {
1739 stm32x_otp_disable(bank
);
1740 } else if (strcmp(CMD_ARGV
[1], "show") == 0) {
1742 "OTP memory bank #%u is %s for write commands.",
1744 stm32x_is_otp_unlocked(bank
) ? "enabled" : "disabled");
1746 return ERROR_COMMAND_SYNTAX_ERROR
;
1749 command_print(CMD
, "Failed: not an OTP bank.");
1755 static const struct command_registration stm32f2x_exec_command_handlers
[] = {
1758 .handler
= stm32x_handle_lock_command
,
1759 .mode
= COMMAND_EXEC
,
1761 .help
= "Lock entire flash device.",
1765 .handler
= stm32x_handle_unlock_command
,
1766 .mode
= COMMAND_EXEC
,
1768 .help
= "Unlock entire protected flash device.",
1771 .name
= "mass_erase",
1772 .handler
= stm32x_handle_mass_erase_command
,
1773 .mode
= COMMAND_EXEC
,
1775 .help
= "Erase entire flash device.",
1778 .name
= "options_read",
1779 .handler
= stm32f2x_handle_options_read_command
,
1780 .mode
= COMMAND_EXEC
,
1782 .help
= "Read and display device option bytes.",
1785 .name
= "options_write",
1786 .handler
= stm32f2x_handle_options_write_command
,
1787 .mode
= COMMAND_EXEC
,
1788 .usage
= "bank_id user_options [ boot_add0 boot_add1 ]",
1789 .help
= "Write option bytes",
1792 .name
= "optcr2_write",
1793 .handler
= stm32f2x_handle_optcr2_write_command
,
1794 .mode
= COMMAND_EXEC
,
1795 .usage
= "bank_id optcr2",
1796 .help
= "Write optcr2 word",
1800 .handler
= stm32x_handle_otp_command
,
1801 .mode
= COMMAND_EXEC
,
1803 .help
= "OTP (One Time Programmable) memory write enable/disable.",
1805 COMMAND_REGISTRATION_DONE
1808 static const struct command_registration stm32f2x_command_handlers
[] = {
1811 .mode
= COMMAND_ANY
,
1812 .help
= "stm32f2x flash command group",
1814 .chain
= stm32f2x_exec_command_handlers
,
1816 COMMAND_REGISTRATION_DONE
1819 const struct flash_driver stm32f2x_flash
= {
1821 .commands
= stm32f2x_command_handlers
,
1822 .flash_bank_command
= stm32x_flash_bank_command
,
1823 .erase
= stm32x_erase
,
1824 .protect
= stm32x_protect
,
1825 .write
= stm32x_write
,
1826 .read
= default_flash_read
,
1827 .probe
= stm32x_probe
,
1828 .auto_probe
= stm32x_auto_probe
,
1829 .erase_check
= default_flash_blank_check
,
1830 .protect_check
= stm32x_protect_check
,
1831 .info
= get_stm32x_info
,
1832 .free_driver_priv
= default_flash_free_driver_priv
,
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