1 // SPDX-License-Identifier: GPL-2.0-or-later
3 /***************************************************************************
4 * Copyright (C) 2005 by Dominic Rath *
5 * Dominic.Rath@gmx.de *
7 * Copyright (C) 2008 by Spencer Oliver *
8 * spen@spen-soft.co.uk *
10 * Copyright (C) 2010 Øyvind Harboe *
11 * oyvind.harboe@zylin.com *
12 ***************************************************************************/
19 #include <target/arm.h>
20 #include <helper/binarybuffer.h>
21 #include <target/algorithm.h>
25 #define FLASH_CR0 0x00000000
26 #define FLASH_CR1 0x00000004
27 #define FLASH_DR0 0x00000008
28 #define FLASH_DR1 0x0000000C
29 #define FLASH_AR 0x00000010
30 #define FLASH_ER 0x00000014
31 #define FLASH_NVWPAR 0x0000DFB0
32 #define FLASH_NVAPR0 0x0000DFB8
33 #define FLASH_NVAPR1 0x0000DFBC
35 /* FLASH_CR0 register bits */
37 #define FLASH_WMS 0x80000000
38 #define FLASH_SUSP 0x40000000
39 #define FLASH_WPG 0x20000000
40 #define FLASH_DWPG 0x10000000
41 #define FLASH_SER 0x08000000
42 #define FLASH_SPR 0x01000000
43 #define FLASH_BER 0x04000000
44 #define FLASH_MER 0x02000000
45 #define FLASH_LOCK 0x00000010
46 #define FLASH_BSYA1 0x00000004
47 #define FLASH_BSYA0 0x00000002
49 /* FLASH_CR1 register bits */
51 #define FLASH_B1S 0x02000000
52 #define FLASH_B0S 0x01000000
53 #define FLASH_B1F1 0x00020000
54 #define FLASH_B1F0 0x00010000
55 #define FLASH_B0F7 0x00000080
56 #define FLASH_B0F6 0x00000040
57 #define FLASH_B0F5 0x00000020
58 #define FLASH_B0F4 0x00000010
59 #define FLASH_B0F3 0x00000008
60 #define FLASH_B0F2 0x00000004
61 #define FLASH_B0F1 0x00000002
62 #define FLASH_B0F0 0x00000001
64 /* FLASH_ER register bits */
66 #define FLASH_WPF 0x00000100
67 #define FLASH_RESER 0x00000080
68 #define FLASH_SEQER 0x00000040
69 #define FLASH_10ER 0x00000008
70 #define FLASH_PGER 0x00000004
71 #define FLASH_ERER 0x00000002
72 #define FLASH_ERR 0x00000001
75 struct str7x_flash_bank
{
76 uint32_t *sector_bits
;
79 uint32_t register_base
;
82 struct str7x_mem_layout
{
83 uint32_t sector_start
;
88 enum str7x_status_codes
{
89 STR7X_CMD_SUCCESS
= 0,
90 STR7X_INVALID_COMMAND
= 1,
91 STR7X_SRC_ADDR_ERROR
= 2,
92 STR7X_DST_ADDR_ERROR
= 3,
93 STR7X_SRC_ADDR_NOT_MAPPED
= 4,
94 STR7X_DST_ADDR_NOT_MAPPED
= 5,
95 STR7X_COUNT_ERROR
= 6,
96 STR7X_INVALID_SECTOR
= 7,
97 STR7X_SECTOR_NOT_BLANK
= 8,
98 STR7X_SECTOR_NOT_PREPARED
= 9,
99 STR7X_COMPARE_ERROR
= 10,
103 static const struct str7x_mem_layout mem_layout_str7bank0
[] = {
104 {0x00000000, 0x02000, 0x01},
105 {0x00002000, 0x02000, 0x02},
106 {0x00004000, 0x02000, 0x04},
107 {0x00006000, 0x02000, 0x08},
108 {0x00008000, 0x08000, 0x10},
109 {0x00010000, 0x10000, 0x20},
110 {0x00020000, 0x10000, 0x40},
111 {0x00030000, 0x10000, 0x80}
114 static const struct str7x_mem_layout mem_layout_str7bank1
[] = {
115 {0x00000000, 0x02000, 0x10000},
116 {0x00002000, 0x02000, 0x20000}
119 static int str7x_get_flash_adr(struct flash_bank
*bank
, uint32_t reg
)
121 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
122 return str7x_info
->register_base
| reg
;
125 static int str7x_build_block_list(struct flash_bank
*bank
)
127 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
130 unsigned int num_sectors
;
131 int b0_sectors
= 0, b1_sectors
= 0;
133 switch (bank
->size
) {
147 LOG_ERROR("BUG: unknown bank->size encountered");
151 num_sectors
= b0_sectors
+ b1_sectors
;
153 bank
->num_sectors
= num_sectors
;
154 bank
->sectors
= malloc(sizeof(struct flash_sector
) * num_sectors
);
155 str7x_info
->sector_bits
= malloc(sizeof(uint32_t) * num_sectors
);
159 for (i
= 0; i
< b0_sectors
; i
++) {
160 bank
->sectors
[num_sectors
].offset
= mem_layout_str7bank0
[i
].sector_start
;
161 bank
->sectors
[num_sectors
].size
= mem_layout_str7bank0
[i
].sector_size
;
162 bank
->sectors
[num_sectors
].is_erased
= -1;
163 /* the reset_init handler marks all the sectors unprotected,
164 * matching hardware after reset; keep the driver in sync
166 bank
->sectors
[num_sectors
].is_protected
= 0;
167 str7x_info
->sector_bits
[num_sectors
++] = mem_layout_str7bank0
[i
].sector_bit
;
170 for (i
= 0; i
< b1_sectors
; i
++) {
171 bank
->sectors
[num_sectors
].offset
= mem_layout_str7bank1
[i
].sector_start
;
172 bank
->sectors
[num_sectors
].size
= mem_layout_str7bank1
[i
].sector_size
;
173 bank
->sectors
[num_sectors
].is_erased
= -1;
174 /* the reset_init handler marks all the sectors unprotected,
175 * matching hardware after reset; keep the driver in sync
177 bank
->sectors
[num_sectors
].is_protected
= 0;
178 str7x_info
->sector_bits
[num_sectors
++] = mem_layout_str7bank1
[i
].sector_bit
;
184 /* flash bank str7x <base> <size> 0 0 <target#> <str71_variant>
186 FLASH_BANK_COMMAND_HANDLER(str7x_flash_bank_command
)
188 struct str7x_flash_bank
*str7x_info
;
191 return ERROR_COMMAND_SYNTAX_ERROR
;
193 str7x_info
= malloc(sizeof(struct str7x_flash_bank
));
194 bank
->driver_priv
= str7x_info
;
196 /* set default bits for str71x flash */
197 str7x_info
->busy_bits
= (FLASH_LOCK
| FLASH_BSYA1
| FLASH_BSYA0
);
198 str7x_info
->disable_bit
= (1 << 1);
200 if (strcmp(CMD_ARGV
[6], "STR71x") == 0)
201 str7x_info
->register_base
= 0x40100000;
202 else if (strcmp(CMD_ARGV
[6], "STR73x") == 0) {
203 str7x_info
->register_base
= 0x80100000;
204 str7x_info
->busy_bits
= (FLASH_LOCK
| FLASH_BSYA0
);
205 } else if (strcmp(CMD_ARGV
[6], "STR75x") == 0) {
206 str7x_info
->register_base
= 0x20100000;
207 str7x_info
->disable_bit
= (1 << 0);
209 LOG_ERROR("unknown STR7x variant: '%s'", CMD_ARGV
[6]);
211 return ERROR_FLASH_BANK_INVALID
;
214 str7x_build_block_list(bank
);
219 /* wait for flash to become idle or report errors.
221 FIX!!! what's the maximum timeout??? The documentation doesn't
222 state any maximum time.... by inspection it seems > 1000ms is to be
225 10000ms is long enough that it should cover anything, yet not
226 quite be equivalent to an infinite loop.
229 static int str7x_waitbusy(struct flash_bank
*bank
)
233 struct target
*target
= bank
->target
;
234 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
236 for (i
= 0 ; i
< 10000; i
++) {
238 err
= target_read_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), &retval
);
242 if ((retval
& str7x_info
->busy_bits
) == 0)
247 LOG_ERROR("Timed out waiting for str7x flash");
252 static int str7x_result(struct flash_bank
*bank
)
254 struct target
*target
= bank
->target
;
255 uint32_t flash_flags
;
258 retval
= target_read_u32(target
, str7x_get_flash_adr(bank
, FLASH_ER
), &flash_flags
);
259 if (retval
!= ERROR_OK
)
262 if (flash_flags
& FLASH_WPF
) {
263 LOG_ERROR("str7x hw write protection set");
266 if (flash_flags
& FLASH_RESER
) {
267 LOG_ERROR("str7x suspended program erase not resumed");
270 if (flash_flags
& FLASH_10ER
) {
271 LOG_ERROR("str7x trying to set bit to 1 when it is already 0");
274 if (flash_flags
& FLASH_PGER
) {
275 LOG_ERROR("str7x program error");
278 if (flash_flags
& FLASH_ERER
) {
279 LOG_ERROR("str7x erase error");
282 if (retval
== ERROR_OK
) {
283 if (flash_flags
& FLASH_ERR
) {
284 /* this should always be set if one of the others are set... */
285 LOG_ERROR("str7x write operation failed / bad setup");
293 static int str7x_protect_check(struct flash_bank
*bank
)
295 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
296 struct target
*target
= bank
->target
;
298 uint32_t flash_flags
;
300 if (bank
->target
->state
!= TARGET_HALTED
) {
301 LOG_ERROR("Target not halted");
302 return ERROR_TARGET_NOT_HALTED
;
306 retval
= target_read_u32(target
, str7x_get_flash_adr(bank
, FLASH_NVWPAR
), &flash_flags
);
307 if (retval
!= ERROR_OK
)
310 for (unsigned int i
= 0; i
< bank
->num_sectors
; i
++) {
311 if (flash_flags
& str7x_info
->sector_bits
[i
])
312 bank
->sectors
[i
].is_protected
= 0;
314 bank
->sectors
[i
].is_protected
= 1;
320 static int str7x_erase(struct flash_bank
*bank
, unsigned int first
,
323 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
324 struct target
*target
= bank
->target
;
327 uint32_t sectors
= 0;
330 if (bank
->target
->state
!= TARGET_HALTED
) {
331 LOG_ERROR("Target not halted");
332 return ERROR_TARGET_NOT_HALTED
;
335 for (unsigned int i
= first
; i
<= last
; i
++)
336 sectors
|= str7x_info
->sector_bits
[i
];
338 LOG_DEBUG("sectors: 0x%" PRIx32
"", sectors
);
340 /* clear FLASH_ER register */
341 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_ER
), 0x0);
346 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
351 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR1
), cmd
);
355 cmd
= FLASH_SER
| FLASH_WMS
;
356 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
360 err
= str7x_waitbusy(bank
);
364 err
= str7x_result(bank
);
371 static int str7x_protect(struct flash_bank
*bank
, int set
, unsigned int first
,
374 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
375 struct target
*target
= bank
->target
;
377 uint32_t protect_blocks
;
379 if (bank
->target
->state
!= TARGET_HALTED
) {
380 LOG_ERROR("Target not halted");
381 return ERROR_TARGET_NOT_HALTED
;
384 protect_blocks
= 0xFFFFFFFF;
387 for (unsigned int i
= first
; i
<= last
; i
++)
388 protect_blocks
&= ~(str7x_info
->sector_bits
[i
]);
391 /* clear FLASH_ER register */
393 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_ER
), 0x0);
398 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
402 cmd
= str7x_get_flash_adr(bank
, FLASH_NVWPAR
);
403 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_AR
), cmd
);
407 cmd
= protect_blocks
;
408 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_DR0
), cmd
);
412 cmd
= FLASH_SPR
| FLASH_WMS
;
413 err
= target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
417 err
= str7x_waitbusy(bank
);
421 err
= str7x_result(bank
);
428 static int str7x_write_block(struct flash_bank
*bank
, const uint8_t *buffer
,
429 uint32_t offset
, uint32_t count
)
431 struct str7x_flash_bank
*str7x_info
= bank
->driver_priv
;
432 struct target
*target
= bank
->target
;
433 uint32_t buffer_size
= 32768;
434 struct working_area
*write_algorithm
;
435 struct working_area
*source
;
436 uint32_t address
= bank
->base
+ offset
;
437 struct reg_param reg_params
[6];
438 struct arm_algorithm arm_algo
;
439 int retval
= ERROR_OK
;
441 /* see contrib/loaders/flash/str7x.s for src */
443 static const uint32_t str7x_flash_write_code
[] = {
445 0xe3a04201, /* mov r4, #0x10000000 */
446 0xe5824000, /* str r4, [r2, #0x0] */
447 0xe5821010, /* str r1, [r2, #0x10] */
448 0xe4904004, /* ldr r4, [r0], #4 */
449 0xe5824008, /* str r4, [r2, #0x8] */
450 0xe4904004, /* ldr r4, [r0], #4 */
451 0xe582400c, /* str r4, [r2, #0xc] */
452 0xe3a04209, /* mov r4, #0x90000000 */
453 0xe5824000, /* str r4, [r2, #0x0] */
455 0xe5924000, /* ldr r4, [r2, #0x0] */
456 0xe1140005, /* tst r4, r5 */
457 0x1afffffc, /* bne busy */
458 0xe5924014, /* ldr r4, [r2, #0x14] */
459 0xe31400ff, /* tst r4, #0xff */
460 0x03140c01, /* tsteq r4, #0x100 */
461 0x1a000002, /* bne exit */
462 0xe2811008, /* add r1, r1, #0x8 */
463 0xe2533001, /* subs r3, r3, #1 */
464 0x1affffec, /* bne write */
466 0xeafffffe, /* b exit */
469 /* flash write code */
470 if (target_alloc_working_area_try(target
, sizeof(str7x_flash_write_code
),
471 &write_algorithm
) != ERROR_OK
) {
472 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
475 uint8_t code
[sizeof(str7x_flash_write_code
)];
476 target_buffer_set_u32_array(target
, code
, ARRAY_SIZE(str7x_flash_write_code
),
477 str7x_flash_write_code
);
478 target_write_buffer(target
, write_algorithm
->address
, sizeof(code
), code
);
481 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
) {
483 if (buffer_size
<= 256) {
484 /* we already allocated the writing code, but failed to get a
485 * buffer, free the algorithm */
486 target_free_working_area(target
, write_algorithm
);
488 LOG_WARNING("no large enough working area available, can't do block memory writes");
489 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
493 arm_algo
.common_magic
= ARM_COMMON_MAGIC
;
494 arm_algo
.core_mode
= ARM_MODE_SVC
;
495 arm_algo
.core_state
= ARM_STATE_ARM
;
497 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
498 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
499 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
500 init_reg_param(®_params
[3], "r3", 32, PARAM_OUT
);
501 init_reg_param(®_params
[4], "r4", 32, PARAM_IN
);
502 init_reg_param(®_params
[5], "r5", 32, PARAM_OUT
);
505 uint32_t thisrun_count
= (count
> (buffer_size
/ 8)) ? (buffer_size
/ 8) : count
;
507 target_write_buffer(target
, source
->address
, thisrun_count
* 8, buffer
);
509 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
510 buf_set_u32(reg_params
[1].value
, 0, 32, address
);
511 buf_set_u32(reg_params
[2].value
, 0, 32, str7x_get_flash_adr(bank
, FLASH_CR0
));
512 buf_set_u32(reg_params
[3].value
, 0, 32, thisrun_count
);
513 buf_set_u32(reg_params
[5].value
, 0, 32, str7x_info
->busy_bits
);
515 retval
= target_run_algorithm(target
, 0, NULL
, 6, reg_params
,
516 write_algorithm
->address
,
517 write_algorithm
->address
+ (sizeof(str7x_flash_write_code
) - 4),
519 if (retval
!= ERROR_OK
)
522 if (buf_get_u32(reg_params
[4].value
, 0, 32) != 0x00) {
523 retval
= str7x_result(bank
);
527 buffer
+= thisrun_count
* 8;
528 address
+= thisrun_count
* 8;
529 count
-= thisrun_count
;
532 target_free_working_area(target
, source
);
533 target_free_working_area(target
, write_algorithm
);
535 destroy_reg_param(®_params
[0]);
536 destroy_reg_param(®_params
[1]);
537 destroy_reg_param(®_params
[2]);
538 destroy_reg_param(®_params
[3]);
539 destroy_reg_param(®_params
[4]);
540 destroy_reg_param(®_params
[5]);
545 static int str7x_write(struct flash_bank
*bank
, const uint8_t *buffer
,
546 uint32_t offset
, uint32_t count
)
548 struct target
*target
= bank
->target
;
549 uint32_t dwords_remaining
= (count
/ 8);
550 uint32_t bytes_remaining
= (count
& 0x00000007);
551 uint32_t address
= bank
->base
+ offset
;
552 uint32_t bytes_written
= 0;
555 uint32_t check_address
= offset
;
557 if (bank
->target
->state
!= TARGET_HALTED
) {
558 LOG_ERROR("Target not halted");
559 return ERROR_TARGET_NOT_HALTED
;
563 LOG_WARNING("offset 0x%" PRIx32
" breaks required 8-byte alignment", offset
);
564 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
567 for (unsigned int i
= 0; i
< bank
->num_sectors
; i
++) {
568 uint32_t sec_start
= bank
->sectors
[i
].offset
;
569 uint32_t sec_end
= sec_start
+ bank
->sectors
[i
].size
;
571 /* check if destination falls within the current sector */
572 if ((check_address
>= sec_start
) && (check_address
< sec_end
)) {
573 /* check if destination ends in the current sector */
574 if (offset
+ count
< sec_end
)
575 check_address
= offset
+ count
;
577 check_address
= sec_end
;
581 if (check_address
!= offset
+ count
)
582 return ERROR_FLASH_DST_OUT_OF_BANK
;
584 /* clear FLASH_ER register */
585 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_ER
), 0x0);
587 /* multiple dwords (8-byte) to be programmed? */
588 if (dwords_remaining
> 0) {
589 /* try using a block write */
590 retval
= str7x_write_block(bank
, buffer
, offset
, dwords_remaining
);
591 if (retval
!= ERROR_OK
) {
592 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
) {
593 /* if block write failed (no sufficient working area),
594 * we use normal (slow) single dword accesses */
595 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
600 buffer
+= dwords_remaining
* 8;
601 address
+= dwords_remaining
* 8;
602 dwords_remaining
= 0;
606 while (dwords_remaining
> 0) {
609 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
612 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_AR
), address
);
615 target_write_memory(target
, str7x_get_flash_adr(bank
, FLASH_DR0
),
616 4, 1, buffer
+ bytes_written
);
620 target_write_memory(target
, str7x_get_flash_adr(bank
, FLASH_DR1
),
621 4, 1, buffer
+ bytes_written
);
624 /* start programming cycle */
625 cmd
= FLASH_DWPG
| FLASH_WMS
;
626 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
629 err
= str7x_waitbusy(bank
);
633 err
= str7x_result(bank
);
641 if (bytes_remaining
) {
642 uint8_t last_dword
[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
644 /* copy the last remaining bytes into the write buffer */
645 memcpy(last_dword
, buffer
+bytes_written
, bytes_remaining
);
649 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
652 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_AR
), address
);
655 target_write_memory(target
, str7x_get_flash_adr(bank
, FLASH_DR0
),
659 target_write_memory(target
, str7x_get_flash_adr(bank
, FLASH_DR1
),
660 4, 1, last_dword
+ 4);
662 /* start programming cycle */
663 cmd
= FLASH_DWPG
| FLASH_WMS
;
664 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), cmd
);
667 err
= str7x_waitbusy(bank
);
671 err
= str7x_result(bank
);
679 static int str7x_probe(struct flash_bank
*bank
)
685 COMMAND_HANDLER(str7x_handle_part_id_command
)
691 static int get_str7x_info(struct flash_bank
*bank
, struct command_invocation
*cmd
)
693 /* Setting the write protection on a sector is a permanent change but it
694 * can be disabled temporarily. FLASH_NVWPAR reflects the permanent
695 * protection state of the sectors, not the temporary.
697 command_print_sameline(cmd
, "STR7x flash protection info is only valid after a power cycle, "
698 "clearing the protection is only temporary and may not be reflected in the current "
703 COMMAND_HANDLER(str7x_handle_disable_jtag_command
)
705 struct target
*target
= NULL
;
706 struct str7x_flash_bank
*str7x_info
= NULL
;
709 uint16_t protection_level
= 0;
710 uint16_t protection_regs
;
713 return ERROR_COMMAND_SYNTAX_ERROR
;
715 struct flash_bank
*bank
;
716 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
717 if (retval
!= ERROR_OK
)
720 str7x_info
= bank
->driver_priv
;
722 target
= bank
->target
;
724 if (target
->state
!= TARGET_HALTED
) {
725 LOG_ERROR("Target not halted");
726 return ERROR_TARGET_NOT_HALTED
;
729 /* first we get protection status */
731 target_read_u32(target
, str7x_get_flash_adr(bank
, FLASH_NVAPR0
), ®
);
733 if (!(reg
& str7x_info
->disable_bit
))
734 protection_level
= 1;
736 target_read_u32(target
, str7x_get_flash_adr(bank
, FLASH_NVAPR1
), ®
);
737 protection_regs
= ~(reg
>> 16);
739 while (((protection_regs
) != 0) && (protection_level
< 16)) {
740 protection_regs
>>= 1;
744 if (protection_level
== 0) {
745 flash_cmd
= FLASH_SPR
;
746 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), flash_cmd
);
747 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_AR
), 0x4010DFB8);
748 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_DR0
), 0xFFFFFFFD);
749 flash_cmd
= FLASH_SPR
| FLASH_WMS
;
750 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), flash_cmd
);
752 flash_cmd
= FLASH_SPR
;
753 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), flash_cmd
);
754 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_AR
), 0x4010DFBC);
755 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_DR0
),
756 ~(1 << (15 + protection_level
)));
757 flash_cmd
= FLASH_SPR
| FLASH_WMS
;
758 target_write_u32(target
, str7x_get_flash_adr(bank
, FLASH_CR0
), flash_cmd
);
764 static const struct command_registration str7x_exec_command_handlers
[] = {
766 .name
= "disable_jtag",
768 .handler
= str7x_handle_disable_jtag_command
,
769 .mode
= COMMAND_EXEC
,
770 .help
= "disable jtag access",
772 COMMAND_REGISTRATION_DONE
775 static const struct command_registration str7x_command_handlers
[] = {
779 .help
= "str7x flash command group",
781 .chain
= str7x_exec_command_handlers
,
783 COMMAND_REGISTRATION_DONE
786 const struct flash_driver str7x_flash
= {
788 .commands
= str7x_command_handlers
,
789 .flash_bank_command
= str7x_flash_bank_command
,
790 .erase
= str7x_erase
,
791 .protect
= str7x_protect
,
792 .write
= str7x_write
,
793 .read
= default_flash_read
,
794 .probe
= str7x_probe
,
795 .auto_probe
= str7x_probe
,
796 .erase_check
= default_flash_blank_check
,
797 .protect_check
= str7x_protect_check
,
798 .info
= get_str7x_info
,
799 .free_driver_priv
= default_flash_free_driver_priv
,