1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "replacements.h"
31 #include "algorithm.h"
32 #include "binarybuffer.h"
37 int stm32x_register_commands(struct command_context_s
*cmd_ctx
);
38 int stm32x_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
);
39 int stm32x_erase(struct flash_bank_s
*bank
, int first
, int last
);
40 int stm32x_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
);
41 int stm32x_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
);
42 int stm32x_probe(struct flash_bank_s
*bank
);
43 int stm32x_auto_probe(struct flash_bank_s
*bank
);
44 int stm32x_handle_part_id_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
45 int stm32x_protect_check(struct flash_bank_s
*bank
);
46 int stm32x_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
48 int stm32x_handle_lock_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
49 int stm32x_handle_unlock_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
50 int stm32x_handle_options_read_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
51 int stm32x_handle_options_write_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
52 int stm32x_handle_mass_erase_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
54 flash_driver_t stm32x_flash
=
57 .register_commands
= stm32x_register_commands
,
58 .flash_bank_command
= stm32x_flash_bank_command
,
59 .erase
= stm32x_erase
,
60 .protect
= stm32x_protect
,
61 .write
= stm32x_write
,
62 .probe
= stm32x_probe
,
63 .auto_probe
= stm32x_auto_probe
,
64 .erase_check
= default_flash_mem_blank_check
,
65 .protect_check
= stm32x_protect_check
,
69 int stm32x_register_commands(struct command_context_s
*cmd_ctx
)
71 command_t
*stm32x_cmd
= register_command(cmd_ctx
, NULL
, "stm32x", NULL
, COMMAND_ANY
, "stm32x flash specific commands");
73 register_command(cmd_ctx
, stm32x_cmd
, "lock", stm32x_handle_lock_command
, COMMAND_EXEC
,
75 register_command(cmd_ctx
, stm32x_cmd
, "unlock", stm32x_handle_unlock_command
, COMMAND_EXEC
,
76 "unlock protected device");
77 register_command(cmd_ctx
, stm32x_cmd
, "mass_erase", stm32x_handle_mass_erase_command
, COMMAND_EXEC
,
79 register_command(cmd_ctx
, stm32x_cmd
, "options_read", stm32x_handle_options_read_command
, COMMAND_EXEC
,
80 "read device option bytes");
81 register_command(cmd_ctx
, stm32x_cmd
, "options_write", stm32x_handle_options_write_command
, COMMAND_EXEC
,
82 "write device option bytes");
86 /* flash bank stm32x <base> <size> 0 0 <target#>
88 int stm32x_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
90 stm32x_flash_bank_t
*stm32x_info
;
94 LOG_WARNING("incomplete flash_bank stm32x configuration");
95 return ERROR_FLASH_BANK_INVALID
;
98 stm32x_info
= malloc(sizeof(stm32x_flash_bank_t
));
99 bank
->driver_priv
= stm32x_info
;
101 stm32x_info
->write_algorithm
= NULL
;
102 stm32x_info
->probed
= 0;
107 u32
stm32x_get_flash_status(flash_bank_t
*bank
)
109 target_t
*target
= bank
->target
;
112 target_read_u32(target
, STM32_FLASH_SR
, &status
);
117 u32
stm32x_wait_status_busy(flash_bank_t
*bank
, int timeout
)
121 /* wait for busy to clear */
122 while (((status
= stm32x_get_flash_status(bank
)) & FLASH_BSY
) && (timeout
-- > 0))
124 LOG_DEBUG("status: 0x%x", status
);
131 int stm32x_read_options(struct flash_bank_s
*bank
)
134 stm32x_flash_bank_t
*stm32x_info
= NULL
;
135 target_t
*target
= bank
->target
;
137 stm32x_info
= bank
->driver_priv
;
139 /* read current option bytes */
140 target_read_u32(target
, STM32_FLASH_OBR
, &optiondata
);
142 stm32x_info
->option_bytes
.user_options
= (u16
)0xFFF8|((optiondata
>> 2) & 0x07);
143 stm32x_info
->option_bytes
.RDP
= (optiondata
& (1 << OPT_READOUT
)) ? 0xFFFF : 0x5AA5;
145 if (optiondata
& (1 << OPT_READOUT
))
146 LOG_INFO("Device Security Bit Set");
148 /* each bit refers to a 4bank protection */
149 target_read_u32(target
, STM32_FLASH_WRPR
, &optiondata
);
151 stm32x_info
->option_bytes
.protection
[0] = (u16
)optiondata
;
152 stm32x_info
->option_bytes
.protection
[1] = (u16
)(optiondata
>> 8);
153 stm32x_info
->option_bytes
.protection
[2] = (u16
)(optiondata
>> 16);
154 stm32x_info
->option_bytes
.protection
[3] = (u16
)(optiondata
>> 24);
159 int stm32x_erase_options(struct flash_bank_s
*bank
)
161 stm32x_flash_bank_t
*stm32x_info
= NULL
;
162 target_t
*target
= bank
->target
;
165 stm32x_info
= bank
->driver_priv
;
167 /* read current options */
168 stm32x_read_options(bank
);
170 /* unlock flash registers */
171 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
172 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
174 /* unlock option flash registers */
175 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY1
);
176 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY2
);
178 /* erase option bytes */
179 target_write_u32(target
, STM32_FLASH_CR
, FLASH_OPTER
|FLASH_OPTWRE
);
180 target_write_u32(target
, STM32_FLASH_CR
, FLASH_OPTER
|FLASH_STRT
|FLASH_OPTWRE
);
182 status
= stm32x_wait_status_busy(bank
, 10);
184 if( status
& FLASH_WRPRTERR
)
185 return ERROR_FLASH_OPERATION_FAILED
;
186 if( status
& FLASH_PGERR
)
187 return ERROR_FLASH_OPERATION_FAILED
;
189 /* clear readout protection and complementary option bytes
190 * this will also force a device unlock if set */
191 stm32x_info
->option_bytes
.RDP
= 0x5AA5;
196 int stm32x_write_options(struct flash_bank_s
*bank
)
198 stm32x_flash_bank_t
*stm32x_info
= NULL
;
199 target_t
*target
= bank
->target
;
202 stm32x_info
= bank
->driver_priv
;
204 /* unlock flash registers */
205 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
206 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
208 /* unlock option flash registers */
209 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY1
);
210 target_write_u32(target
, STM32_FLASH_OPTKEYR
, KEY2
);
212 /* program option bytes */
213 target_write_u32(target
, STM32_FLASH_CR
, FLASH_OPTPG
|FLASH_OPTWRE
);
215 /* write user option byte */
216 target_write_u16(target
, STM32_OB_USER
, stm32x_info
->option_bytes
.user_options
);
218 status
= stm32x_wait_status_busy(bank
, 10);
220 if( status
& FLASH_WRPRTERR
)
221 return ERROR_FLASH_OPERATION_FAILED
;
222 if( status
& FLASH_PGERR
)
223 return ERROR_FLASH_OPERATION_FAILED
;
225 /* write protection byte 1 */
226 target_write_u16(target
, STM32_OB_WRP0
, stm32x_info
->option_bytes
.protection
[0]);
228 status
= stm32x_wait_status_busy(bank
, 10);
230 if( status
& FLASH_WRPRTERR
)
231 return ERROR_FLASH_OPERATION_FAILED
;
232 if( status
& FLASH_PGERR
)
233 return ERROR_FLASH_OPERATION_FAILED
;
235 /* write protection byte 2 */
236 target_write_u16(target
, STM32_OB_WRP1
, stm32x_info
->option_bytes
.protection
[1]);
238 status
= stm32x_wait_status_busy(bank
, 10);
240 if( status
& FLASH_WRPRTERR
)
241 return ERROR_FLASH_OPERATION_FAILED
;
242 if( status
& FLASH_PGERR
)
243 return ERROR_FLASH_OPERATION_FAILED
;
245 /* write protection byte 3 */
246 target_write_u16(target
, STM32_OB_WRP2
, stm32x_info
->option_bytes
.protection
[2]);
248 status
= stm32x_wait_status_busy(bank
, 10);
250 if( status
& FLASH_WRPRTERR
)
251 return ERROR_FLASH_OPERATION_FAILED
;
252 if( status
& FLASH_PGERR
)
253 return ERROR_FLASH_OPERATION_FAILED
;
255 /* write protection byte 4 */
256 target_write_u16(target
, STM32_OB_WRP3
, stm32x_info
->option_bytes
.protection
[3]);
258 status
= stm32x_wait_status_busy(bank
, 10);
260 if( status
& FLASH_WRPRTERR
)
261 return ERROR_FLASH_OPERATION_FAILED
;
262 if( status
& FLASH_PGERR
)
263 return ERROR_FLASH_OPERATION_FAILED
;
265 /* write readout protection bit */
266 target_write_u16(target
, STM32_OB_RDP
, stm32x_info
->option_bytes
.RDP
);
268 status
= stm32x_wait_status_busy(bank
, 10);
270 if( status
& FLASH_WRPRTERR
)
271 return ERROR_FLASH_OPERATION_FAILED
;
272 if( status
& FLASH_PGERR
)
273 return ERROR_FLASH_OPERATION_FAILED
;
275 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
280 int stm32x_protect_check(struct flash_bank_s
*bank
)
282 target_t
*target
= bank
->target
;
283 stm32x_flash_bank_t
*stm32x_info
= bank
->driver_priv
;
289 if (target
->state
!= TARGET_HALTED
)
291 return ERROR_TARGET_NOT_HALTED
;
294 /* medium density - each bit refers to a 4bank protection
295 * high density - each bit refers to a 2bank protection */
296 target_read_u32(target
, STM32_FLASH_WRPR
, &protection
);
298 /* medium density - each protection bit is for 4 * 1K pages
299 * high density - each protection bit is for 2 * 2K pages */
300 num_bits
= (bank
->num_sectors
/ stm32x_info
->ppage_size
);
302 for (i
= 0; i
< num_bits
; i
++)
306 if( protection
& (1 << i
))
309 for (s
= 0; s
< stm32x_info
->ppage_size
; s
++)
310 bank
->sectors
[(i
* stm32x_info
->ppage_size
) + s
].is_protected
= set
;
316 int stm32x_erase(struct flash_bank_s
*bank
, int first
, int last
)
318 target_t
*target
= bank
->target
;
323 if (bank
->target
->state
!= TARGET_HALTED
)
325 return ERROR_TARGET_NOT_HALTED
;
328 /* unlock flash registers */
329 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
330 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
332 for (i
= first
; i
<= last
; i
++)
334 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PER
);
335 target_write_u32(target
, STM32_FLASH_AR
, bank
->base
+ bank
->sectors
[i
].offset
);
336 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PER
|FLASH_STRT
);
338 status
= stm32x_wait_status_busy(bank
, 10);
340 if( status
& FLASH_WRPRTERR
)
341 return ERROR_FLASH_OPERATION_FAILED
;
342 if( status
& FLASH_PGERR
)
343 return ERROR_FLASH_OPERATION_FAILED
;
344 bank
->sectors
[i
].is_erased
= 1;
347 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
352 int stm32x_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
354 stm32x_flash_bank_t
*stm32x_info
= NULL
;
355 target_t
*target
= bank
->target
;
356 u16 prot_reg
[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
361 stm32x_info
= bank
->driver_priv
;
363 if (target
->state
!= TARGET_HALTED
)
365 return ERROR_TARGET_NOT_HALTED
;
368 if ((first
&& (first
% stm32x_info
->ppage_size
)) || ((last
+ 1) && (last
+ 1) % stm32x_info
->ppage_size
))
370 LOG_WARNING("sector start/end incorrect - stm32 has %dK sector protection", stm32x_info
->ppage_size
);
371 return ERROR_FLASH_SECTOR_INVALID
;
374 /* medium density - each bit refers to a 4bank protection
375 * high density - each bit refers to a 2bank protection */
376 target_read_u32(target
, STM32_FLASH_WRPR
, &protection
);
378 prot_reg
[0] = (u16
)protection
;
379 prot_reg
[1] = (u16
)(protection
>> 8);
380 prot_reg
[2] = (u16
)(protection
>> 16);
381 prot_reg
[3] = (u16
)(protection
>> 24);
383 for (i
= first
; i
<= last
; i
++)
385 reg
= (i
/ stm32x_info
->ppage_size
) / 8;
386 bit
= (i
/ stm32x_info
->ppage_size
) - (reg
* 8);
389 prot_reg
[reg
] &= ~(1 << bit
);
391 prot_reg
[reg
] |= (1 << bit
);
394 if ((status
= stm32x_erase_options(bank
)) != ERROR_OK
)
397 stm32x_info
->option_bytes
.protection
[0] = prot_reg
[0];
398 stm32x_info
->option_bytes
.protection
[1] = prot_reg
[1];
399 stm32x_info
->option_bytes
.protection
[2] = prot_reg
[2];
400 stm32x_info
->option_bytes
.protection
[3] = prot_reg
[3];
402 return stm32x_write_options(bank
);
405 int stm32x_write_block(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
407 stm32x_flash_bank_t
*stm32x_info
= bank
->driver_priv
;
408 target_t
*target
= bank
->target
;
409 u32 buffer_size
= 8192;
410 working_area_t
*source
;
411 u32 address
= bank
->base
+ offset
;
412 reg_param_t reg_params
[4];
413 armv7m_algorithm_t armv7m_info
;
414 int retval
= ERROR_OK
;
416 u8 stm32x_flash_write_code
[] = {
418 0xDF, 0xF8, 0x24, 0x40, /* ldr r4, STM32_FLASH_CR */
419 0x09, 0x4D, /* ldr r5, STM32_FLASH_SR */
420 0x4F, 0xF0, 0x01, 0x03, /* mov r3, #1 */
421 0x23, 0x60, /* str r3, [r4, #0] */
422 0x30, 0xF8, 0x02, 0x3B, /* ldrh r3, [r0], #2 */
423 0x21, 0xF8, 0x02, 0x3B, /* strh r3, [r1], #2 */
425 0x2B, 0x68, /* ldr r3, [r5, #0] */
426 0x13, 0xF0, 0x01, 0x0F, /* tst r3, #0x01 */
427 0xFB, 0xD0, /* beq busy */
428 0x13, 0xF0, 0x14, 0x0F, /* tst r3, #0x14 */
429 0x01, 0xD1, /* bne exit */
430 0x01, 0x3A, /* subs r2, r2, #1 */
431 0xED, 0xD1, /* bne write */
433 0xFE, 0xE7, /* b exit */
434 0x10, 0x20, 0x02, 0x40, /* STM32_FLASH_CR: .word 0x40022010 */
435 0x0C, 0x20, 0x02, 0x40 /* STM32_FLASH_SR: .word 0x4002200C */
438 /* flash write code */
439 if (target_alloc_working_area(target
, sizeof(stm32x_flash_write_code
), &stm32x_info
->write_algorithm
) != ERROR_OK
)
441 LOG_WARNING("no working area available, can't do block memory writes");
442 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
445 if ((retval
=target_write_buffer(target
, stm32x_info
->write_algorithm
->address
, sizeof(stm32x_flash_write_code
), stm32x_flash_write_code
))!=ERROR_OK
)
449 while (target_alloc_working_area(target
, buffer_size
, &source
) != ERROR_OK
)
452 if (buffer_size
<= 256)
454 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
455 if (stm32x_info
->write_algorithm
)
456 target_free_working_area(target
, stm32x_info
->write_algorithm
);
458 LOG_WARNING("no large enough working area available, can't do block memory writes");
459 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
463 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
464 armv7m_info
.core_mode
= ARMV7M_MODE_ANY
;
466 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
467 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
468 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
469 init_reg_param(®_params
[3], "r3", 32, PARAM_IN
);
473 u32 thisrun_count
= (count
> (buffer_size
/ 2)) ? (buffer_size
/ 2) : count
;
475 if ((retval
= target_write_buffer(target
, source
->address
, thisrun_count
* 2, buffer
))!=ERROR_OK
)
478 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
479 buf_set_u32(reg_params
[1].value
, 0, 32, address
);
480 buf_set_u32(reg_params
[2].value
, 0, 32, thisrun_count
);
482 if ((retval
= target
->type
->run_algorithm(target
, 0, NULL
, 4, reg_params
, stm32x_info
->write_algorithm
->address
, \
483 stm32x_info
->write_algorithm
->address
+ (sizeof(stm32x_flash_write_code
) - 10), 10000, &armv7m_info
)) != ERROR_OK
)
485 LOG_ERROR("error executing stm32x flash write algorithm");
486 retval
= ERROR_FLASH_OPERATION_FAILED
;
490 if (buf_get_u32(reg_params
[3].value
, 0, 32) & 0x14)
492 retval
= ERROR_FLASH_OPERATION_FAILED
;
496 buffer
+= thisrun_count
* 2;
497 address
+= thisrun_count
* 2;
498 count
-= thisrun_count
;
501 target_free_working_area(target
, source
);
502 target_free_working_area(target
, stm32x_info
->write_algorithm
);
504 destroy_reg_param(®_params
[0]);
505 destroy_reg_param(®_params
[1]);
506 destroy_reg_param(®_params
[2]);
507 destroy_reg_param(®_params
[3]);
512 int stm32x_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
514 target_t
*target
= bank
->target
;
515 u32 words_remaining
= (count
/ 2);
516 u32 bytes_remaining
= (count
& 0x00000001);
517 u32 address
= bank
->base
+ offset
;
518 u32 bytes_written
= 0;
522 if (bank
->target
->state
!= TARGET_HALTED
)
524 return ERROR_TARGET_NOT_HALTED
;
529 LOG_WARNING("offset 0x%x breaks required 2-byte alignment", offset
);
530 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
533 /* unlock flash registers */
534 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
535 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
537 /* multiple half words (2-byte) to be programmed? */
538 if (words_remaining
> 0)
540 /* try using a block write */
541 if ((retval
= stm32x_write_block(bank
, buffer
, offset
, words_remaining
)) != ERROR_OK
)
543 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
545 /* if block write failed (no sufficient working area),
546 * we use normal (slow) single dword accesses */
547 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
549 else if (retval
== ERROR_FLASH_OPERATION_FAILED
)
551 LOG_ERROR("flash writing failed with error code: 0x%x", retval
);
552 return ERROR_FLASH_OPERATION_FAILED
;
557 buffer
+= words_remaining
* 2;
558 address
+= words_remaining
* 2;
563 while (words_remaining
> 0)
565 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PG
);
566 target_write_u16(target
, address
, *(u16
*)(buffer
+ bytes_written
));
568 status
= stm32x_wait_status_busy(bank
, 5);
570 if( status
& FLASH_WRPRTERR
)
571 return ERROR_FLASH_OPERATION_FAILED
;
572 if( status
& FLASH_PGERR
)
573 return ERROR_FLASH_OPERATION_FAILED
;
582 u8 last_halfword
[2] = {0xff, 0xff};
585 while(bytes_remaining
> 0)
587 last_halfword
[i
++] = *(buffer
+ bytes_written
);
592 target_write_u32(target
, STM32_FLASH_CR
, FLASH_PG
);
593 target_write_u16(target
, address
, *(u16
*)last_halfword
);
595 status
= stm32x_wait_status_busy(bank
, 5);
597 if( status
& FLASH_WRPRTERR
)
598 return ERROR_FLASH_OPERATION_FAILED
;
599 if( status
& FLASH_PGERR
)
600 return ERROR_FLASH_OPERATION_FAILED
;
603 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
608 int stm32x_probe(struct flash_bank_s
*bank
)
610 target_t
*target
= bank
->target
;
611 stm32x_flash_bank_t
*stm32x_info
= bank
->driver_priv
;
617 if (bank
->target
->state
!= TARGET_HALTED
)
619 return ERROR_TARGET_NOT_HALTED
;
622 stm32x_info
->probed
= 0;
624 /* read stm32 device id register */
625 target_read_u32(target
, 0xE0042000, &device_id
);
626 LOG_INFO( "device id = 0x%08x", device_id
);
628 switch (device_id
& 0x7ff)
631 /* medium density - we have 1k pages
632 * 4 pages for a protection area */
634 stm32x_info
->ppage_size
= 4;
638 /* high density - we have 2k pages
639 * 2 pages for a protection area */
641 stm32x_info
->ppage_size
= 2;
645 LOG_WARNING( "Cannot identify target as a STM32 family." );
646 return ERROR_FLASH_OPERATION_FAILED
;
649 /* get flash size from target */
650 if (target_read_u16(target
, 0x1FFFF7E0, &num_pages
) != ERROR_OK
)
652 /* failed reading flash size, default to 128k */
653 LOG_WARNING( "STM32 flash size failed, probe inaccurate - assuming 128k flash" );
657 /* check for early silicon rev A */
658 if ((device_id
>> 16) == 0 )
660 /* number of sectors incorrect on revA */
661 LOG_WARNING( "STM32 Rev A Silicon detected, probe inaccurate - assuming 128k flash" );
665 LOG_INFO( "flash size = %dkbytes", num_pages
);
667 /* calculate numbers of pages */
668 if (page_size
- 1024)
669 num_pages
/= (page_size
- 1024);
671 bank
->base
= 0x08000000;
672 bank
->size
= (num_pages
* page_size
);
673 bank
->num_sectors
= num_pages
;
674 bank
->sectors
= malloc(sizeof(flash_sector_t
) * num_pages
);
676 for (i
= 0; i
< num_pages
; i
++)
678 bank
->sectors
[i
].offset
= i
* page_size
;
679 bank
->sectors
[i
].size
= page_size
;
680 bank
->sectors
[i
].is_erased
= -1;
681 bank
->sectors
[i
].is_protected
= 1;
684 stm32x_info
->probed
= 1;
689 int stm32x_auto_probe(struct flash_bank_s
*bank
)
691 stm32x_flash_bank_t
*stm32x_info
= bank
->driver_priv
;
692 if (stm32x_info
->probed
)
694 return stm32x_probe(bank
);
697 int stm32x_handle_part_id_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
702 int stm32x_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
704 snprintf(buf
, buf_size
, "stm32x flash driver info" );
708 int stm32x_handle_lock_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
711 target_t
*target
= NULL
;
712 stm32x_flash_bank_t
*stm32x_info
= NULL
;
716 command_print(cmd_ctx
, "stm32x lock <bank>");
720 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
723 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
727 stm32x_info
= bank
->driver_priv
;
729 target
= bank
->target
;
731 if (target
->state
!= TARGET_HALTED
)
733 return ERROR_TARGET_NOT_HALTED
;
736 if (stm32x_erase_options(bank
) != ERROR_OK
)
738 command_print(cmd_ctx
, "stm32x failed to erase options");
742 /* set readout protection */
743 stm32x_info
->option_bytes
.RDP
= 0;
745 if (stm32x_write_options(bank
) != ERROR_OK
)
747 command_print(cmd_ctx
, "stm32x failed to lock device");
751 command_print(cmd_ctx
, "stm32x locked");
756 int stm32x_handle_unlock_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
759 target_t
*target
= NULL
;
760 stm32x_flash_bank_t
*stm32x_info
= NULL
;
764 command_print(cmd_ctx
, "stm32x unlock <bank>");
768 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
771 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
775 stm32x_info
= bank
->driver_priv
;
777 target
= bank
->target
;
779 if (target
->state
!= TARGET_HALTED
)
781 return ERROR_TARGET_NOT_HALTED
;
784 if (stm32x_erase_options(bank
) != ERROR_OK
)
786 command_print(cmd_ctx
, "stm32x failed to unlock device");
790 if (stm32x_write_options(bank
) != ERROR_OK
)
792 command_print(cmd_ctx
, "stm32x failed to lock device");
796 command_print(cmd_ctx
, "stm32x unlocked");
801 int stm32x_handle_options_read_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
805 target_t
*target
= NULL
;
806 stm32x_flash_bank_t
*stm32x_info
= NULL
;
810 command_print(cmd_ctx
, "stm32x options_read <bank>");
814 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
817 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
821 stm32x_info
= bank
->driver_priv
;
823 target
= bank
->target
;
825 if (target
->state
!= TARGET_HALTED
)
827 return ERROR_TARGET_NOT_HALTED
;
830 target_read_u32(target
, STM32_FLASH_OBR
, &optionbyte
);
831 command_print(cmd_ctx
, "Option Byte: 0x%x", optionbyte
);
833 if (buf_get_u32((u8
*)&optionbyte
, OPT_ERROR
, 1))
834 command_print(cmd_ctx
, "Option Byte Complement Error");
836 if (buf_get_u32((u8
*)&optionbyte
, OPT_READOUT
, 1))
837 command_print(cmd_ctx
, "Readout Protection On");
839 command_print(cmd_ctx
, "Readout Protection Off");
841 if (buf_get_u32((u8
*)&optionbyte
, OPT_RDWDGSW
, 1))
842 command_print(cmd_ctx
, "Software Watchdog");
844 command_print(cmd_ctx
, "Hardware Watchdog");
846 if (buf_get_u32((u8
*)&optionbyte
, OPT_RDRSTSTOP
, 1))
847 command_print(cmd_ctx
, "Stop: No reset generated");
849 command_print(cmd_ctx
, "Stop: Reset generated");
851 if (buf_get_u32((u8
*)&optionbyte
, OPT_RDRSTSTDBY
, 1))
852 command_print(cmd_ctx
, "Standby: No reset generated");
854 command_print(cmd_ctx
, "Standby: Reset generated");
859 int stm32x_handle_options_write_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
862 target_t
*target
= NULL
;
863 stm32x_flash_bank_t
*stm32x_info
= NULL
;
864 u16 optionbyte
= 0xF8;
868 command_print(cmd_ctx
, "stm32x options_write <bank> <SWWDG|HWWDG> <RSTSTNDBY|NORSTSTNDBY> <RSTSTOP|NORSTSTOP>");
872 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
875 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
879 stm32x_info
= bank
->driver_priv
;
881 target
= bank
->target
;
883 if (target
->state
!= TARGET_HALTED
)
885 return ERROR_TARGET_NOT_HALTED
;
888 if (strcmp(args
[1], "SWWDG") == 0)
890 optionbyte
|= (1<<0);
894 optionbyte
&= ~(1<<0);
897 if (strcmp(args
[2], "NORSTSTNDBY") == 0)
899 optionbyte
|= (1<<1);
903 optionbyte
&= ~(1<<1);
906 if (strcmp(args
[3], "NORSTSTOP") == 0)
908 optionbyte
|= (1<<2);
912 optionbyte
&= ~(1<<2);
915 if (stm32x_erase_options(bank
) != ERROR_OK
)
917 command_print(cmd_ctx
, "stm32x failed to erase options");
921 stm32x_info
->option_bytes
.user_options
= optionbyte
;
923 if (stm32x_write_options(bank
) != ERROR_OK
)
925 command_print(cmd_ctx
, "stm32x failed to write options");
929 command_print(cmd_ctx
, "stm32x write options complete");
934 int stm32x_handle_mass_erase_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
936 target_t
*target
= NULL
;
937 stm32x_flash_bank_t
*stm32x_info
= NULL
;
944 command_print(cmd_ctx
, "stm32x mass_erase <bank>");
948 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
951 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
955 stm32x_info
= bank
->driver_priv
;
957 target
= bank
->target
;
959 if (target
->state
!= TARGET_HALTED
)
961 return ERROR_TARGET_NOT_HALTED
;
964 /* unlock option flash registers */
965 target_write_u32(target
, STM32_FLASH_KEYR
, KEY1
);
966 target_write_u32(target
, STM32_FLASH_KEYR
, KEY2
);
968 /* mass erase flash memory */
969 target_write_u32(target
, STM32_FLASH_CR
, FLASH_MER
);
970 target_write_u32(target
, STM32_FLASH_CR
, FLASH_MER
|FLASH_STRT
);
972 status
= stm32x_wait_status_busy(bank
, 10);
974 target_write_u32(target
, STM32_FLASH_CR
, FLASH_LOCK
);
976 if( status
& FLASH_WRPRTERR
)
978 command_print(cmd_ctx
, "stm32x device protected");
982 if( status
& FLASH_PGERR
)
984 command_print(cmd_ctx
, "stm32x device programming failed");
988 /* set all sectors as erased */
989 for (i
= 0; i
< bank
->num_sectors
; i
++)
991 bank
->sectors
[i
].is_erased
= 1;
994 command_print(cmd_ctx
, "stm32x mass erase complete");
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