1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2006 by Magnus Lundin *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * Copyright (C) 2007,2008 Øyvind Harboe *
12 * oyvind.harboe@zylin.com *
14 * This program is free software; you can redistribute it and/or modify *
15 * it under the terms of the GNU General Public License as published by *
16 * the Free Software Foundation; either version 2 of the License, or *
17 * (at your option) any later version. *
19 * This program is distributed in the hope that it will be useful, *
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 * GNU General Public License for more details. *
24 * You should have received a copy of the GNU General Public License *
25 * along with this program; if not, write to the *
26 * Free Software Foundation, Inc., *
27 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
29 * ARMv7-M Architecture, Application Level Reference Manual *
30 * ARM DDI 0405C (September 2008) *
32 ***************************************************************************/
37 #include "breakpoints.h"
39 #include "algorithm.h"
44 #define _DEBUG_INSTRUCTION_EXECUTION_
47 /** Maps from enum armv7m_mode (except ARMV7M_MODE_ANY) to name. */
48 char *armv7m_mode_strings
[] =
50 "Thread", "Thread (User)", "Handler",
53 static char *armv7m_exception_strings
[] =
55 "", "Reset", "NMI", "HardFault",
56 "MemManage", "BusFault", "UsageFault", "RESERVED",
57 "RESERVED", "RESERVED", "RESERVED", "SVCall",
58 "DebugMonitor", "RESERVED", "PendSV", "SysTick"
61 #ifdef ARMV7_GDB_HACKS
62 uint8_t armv7m_gdb_dummy_cpsr_value
[] = {0, 0, 0, 0};
64 struct reg armv7m_gdb_dummy_cpsr_reg
=
66 .name
= "GDB dummy cpsr register",
67 .value
= armv7m_gdb_dummy_cpsr_value
,
76 * These registers are not memory-mapped. The ARMv7-M profile includes
77 * memory mapped registers too, such as for the NVIC (interrupt controller)
78 * and SysTick (timer) modules; those can mostly be treated as peripherals.
80 * The ARMv6-M profile is almost identical in this respect, except that it
81 * doesn't include basepri or faultmask registers.
88 { ARMV7M_R0
, "r0", 32 },
89 { ARMV7M_R1
, "r1", 32 },
90 { ARMV7M_R2
, "r2", 32 },
91 { ARMV7M_R3
, "r3", 32 },
93 { ARMV7M_R4
, "r4", 32 },
94 { ARMV7M_R5
, "r5", 32 },
95 { ARMV7M_R6
, "r6", 32 },
96 { ARMV7M_R7
, "r7", 32 },
98 { ARMV7M_R8
, "r8", 32 },
99 { ARMV7M_R9
, "r9", 32 },
100 { ARMV7M_R10
, "r10", 32 },
101 { ARMV7M_R11
, "r11", 32 },
103 { ARMV7M_R12
, "r12", 32 },
104 { ARMV7M_R13
, "sp", 32 },
105 { ARMV7M_R14
, "lr", 32 },
106 { ARMV7M_PC
, "pc", 32 },
108 { ARMV7M_xPSR
, "xPSR", 32 },
109 { ARMV7M_MSP
, "msp", 32 },
110 { ARMV7M_PSP
, "psp", 32 },
112 { ARMV7M_PRIMASK
, "primask", 1 },
113 { ARMV7M_BASEPRI
, "basepri", 8 },
114 { ARMV7M_FAULTMASK
, "faultmask", 1 },
115 { ARMV7M_CONTROL
, "control", 2 },
118 #define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
121 * Restores target context using the cache of core registers set up
122 * by armv7m_build_reg_cache(), calling optional core-specific hooks.
124 int armv7m_restore_context(struct target
*target
)
127 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
131 if (armv7m
->pre_restore_context
)
132 armv7m
->pre_restore_context(target
);
134 for (i
= ARMV7M_NUM_REGS
- 1; i
>= 0; i
--)
136 if (armv7m
->core_cache
->reg_list
[i
].dirty
)
138 armv7m
->write_core_reg(target
, i
);
142 if (armv7m
->post_restore_context
)
143 armv7m
->post_restore_context(target
);
148 /* Core state functions */
151 * Maps ISR number (from xPSR) to name.
152 * Note that while names and meanings for the first sixteen are standardized
153 * (with zero not a true exception), external interrupts are only numbered.
154 * They are assigned by vendors, which generally assign different numbers to
155 * peripherals (such as UART0 or a USB peripheral controller).
157 char *armv7m_exception_string(int number
)
159 static char enamebuf
[32];
161 if ((number
< 0) | (number
> 511))
162 return "Invalid exception";
164 return armv7m_exception_strings
[number
];
165 sprintf(enamebuf
, "External Interrupt(%i)", number
- 16);
169 static int armv7m_get_core_reg(struct reg
*reg
)
172 struct armv7m_core_reg
*armv7m_reg
= reg
->arch_info
;
173 struct target
*target
= armv7m_reg
->target
;
174 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
176 if (target
->state
!= TARGET_HALTED
)
178 return ERROR_TARGET_NOT_HALTED
;
181 retval
= armv7m
->read_core_reg(target
, armv7m_reg
->num
);
186 static int armv7m_set_core_reg(struct reg
*reg
, uint8_t *buf
)
188 struct armv7m_core_reg
*armv7m_reg
= reg
->arch_info
;
189 struct target
*target
= armv7m_reg
->target
;
190 uint32_t value
= buf_get_u32(buf
, 0, 32);
192 if (target
->state
!= TARGET_HALTED
)
194 return ERROR_TARGET_NOT_HALTED
;
197 buf_set_u32(reg
->value
, 0, 32, value
);
204 static int armv7m_read_core_reg(struct target
*target
, unsigned num
)
208 struct armv7m_core_reg
* armv7m_core_reg
;
209 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
211 if (num
>= ARMV7M_NUM_REGS
)
212 return ERROR_INVALID_ARGUMENTS
;
214 armv7m_core_reg
= armv7m
->core_cache
->reg_list
[num
].arch_info
;
215 retval
= armv7m
->load_core_reg_u32(target
, armv7m_core_reg
->type
, armv7m_core_reg
->num
, ®_value
);
216 buf_set_u32(armv7m
->core_cache
->reg_list
[num
].value
, 0, 32, reg_value
);
217 armv7m
->core_cache
->reg_list
[num
].valid
= 1;
218 armv7m
->core_cache
->reg_list
[num
].dirty
= 0;
223 static int armv7m_write_core_reg(struct target
*target
, unsigned num
)
227 struct armv7m_core_reg
*armv7m_core_reg
;
228 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
230 if (num
>= ARMV7M_NUM_REGS
)
231 return ERROR_INVALID_ARGUMENTS
;
233 reg_value
= buf_get_u32(armv7m
->core_cache
->reg_list
[num
].value
, 0, 32);
234 armv7m_core_reg
= armv7m
->core_cache
->reg_list
[num
].arch_info
;
235 retval
= armv7m
->store_core_reg_u32(target
, armv7m_core_reg
->type
, armv7m_core_reg
->num
, reg_value
);
236 if (retval
!= ERROR_OK
)
238 LOG_ERROR("JTAG failure");
239 armv7m
->core_cache
->reg_list
[num
].dirty
= armv7m
->core_cache
->reg_list
[num
].valid
;
240 return ERROR_JTAG_DEVICE_ERROR
;
242 LOG_DEBUG("write core reg %i value 0x%" PRIx32
"", num
, reg_value
);
243 armv7m
->core_cache
->reg_list
[num
].valid
= 1;
244 armv7m
->core_cache
->reg_list
[num
].dirty
= 0;
249 /** Invalidates cache of core registers set up by armv7m_build_reg_cache(). */
250 int armv7m_invalidate_core_regs(struct target
*target
)
252 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
255 for (i
= 0; i
< armv7m
->core_cache
->num_regs
; i
++)
257 armv7m
->core_cache
->reg_list
[i
].valid
= 0;
258 armv7m
->core_cache
->reg_list
[i
].dirty
= 0;
265 * Returns generic ARM userspace registers to GDB.
266 * GDB doesn't quite understand that most ARMs don't have floating point
267 * hardware, so this also fakes a set of long-obsolete FPA registers that
268 * are not used in EABI based software stacks.
270 int armv7m_get_gdb_reg_list(struct target
*target
, struct reg
**reg_list
[], int *reg_list_size
)
272 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
276 *reg_list
= malloc(sizeof(struct reg
*) * (*reg_list_size
));
279 * GDB register packet format for ARM:
280 * - the first 16 registers are r0..r15
281 * - (obsolete) 8 FPA registers
282 * - (obsolete) FPA status
285 for (i
= 0; i
< 16; i
++)
287 (*reg_list
)[i
] = &armv7m
->core_cache
->reg_list
[i
];
290 for (i
= 16; i
< 24; i
++)
291 (*reg_list
)[i
] = &arm_gdb_dummy_fp_reg
;
292 (*reg_list
)[24] = &arm_gdb_dummy_fps_reg
;
294 #ifdef ARMV7_GDB_HACKS
295 /* use dummy cpsr reg otherwise gdb may try and set the thumb bit */
296 (*reg_list
)[25] = &armv7m_gdb_dummy_cpsr_reg
;
298 /* ARMV7M is always in thumb mode, try to make GDB understand this
299 * if it does not support this arch */
300 *((char*)armv7m
->core_cache
->reg_list
[15].value
) |= 1;
302 (*reg_list
)[25] = &armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
];
308 /* run to exit point. return error if exit point was not reached. */
309 static int armv7m_run_and_wait(struct target
*target
, uint32_t entry_point
, int timeout_ms
, uint32_t exit_point
, struct armv7m_common
*armv7m
)
313 /* This code relies on the target specific resume() and poll()->debug_entry()
314 * sequence to write register values to the processor and the read them back */
315 if ((retval
= target_resume(target
, 0, entry_point
, 1, 1)) != ERROR_OK
)
320 retval
= target_wait_state(target
, TARGET_HALTED
, timeout_ms
);
321 /* If the target fails to halt due to the breakpoint, force a halt */
322 if (retval
!= ERROR_OK
|| target
->state
!= TARGET_HALTED
)
324 if ((retval
= target_halt(target
)) != ERROR_OK
)
326 if ((retval
= target_wait_state(target
, TARGET_HALTED
, 500)) != ERROR_OK
)
330 return ERROR_TARGET_TIMEOUT
;
333 armv7m
->load_core_reg_u32(target
, ARMV7M_REGISTER_CORE_GP
, 15, &pc
);
334 if (pc
!= exit_point
)
336 LOG_DEBUG("failed algoritm halted at 0x%" PRIx32
" ", pc
);
337 return ERROR_TARGET_TIMEOUT
;
343 /** Runs a Thumb algorithm in the target. */
344 int armv7m_run_algorithm(struct target
*target
,
345 int num_mem_params
, struct mem_param
*mem_params
,
346 int num_reg_params
, struct reg_param
*reg_params
,
347 uint32_t entry_point
, uint32_t exit_point
,
348 int timeout_ms
, void *arch_info
)
350 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
351 struct armv7m_algorithm
*armv7m_algorithm_info
= arch_info
;
352 enum armv7m_mode core_mode
= armv7m
->core_mode
;
353 int retval
= ERROR_OK
;
354 uint32_t context
[ARMV7M_NUM_REGS
];
356 if (armv7m_algorithm_info
->common_magic
!= ARMV7M_COMMON_MAGIC
)
358 LOG_ERROR("current target isn't an ARMV7M target");
359 return ERROR_TARGET_INVALID
;
362 if (target
->state
!= TARGET_HALTED
)
364 LOG_WARNING("target not halted");
365 return ERROR_TARGET_NOT_HALTED
;
368 /* refresh core register cache */
369 /* Not needed if core register cache is always consistent with target process state */
370 for (unsigned i
= 0; i
< ARMV7M_NUM_REGS
; i
++)
372 if (!armv7m
->core_cache
->reg_list
[i
].valid
)
373 armv7m
->read_core_reg(target
, i
);
374 context
[i
] = buf_get_u32(armv7m
->core_cache
->reg_list
[i
].value
, 0, 32);
377 for (int i
= 0; i
< num_mem_params
; i
++)
379 if ((retval
= target_write_buffer(target
, mem_params
[i
].address
, mem_params
[i
].size
, mem_params
[i
].value
)) != ERROR_OK
)
383 for (int i
= 0; i
< num_reg_params
; i
++)
385 struct reg
*reg
= register_get_by_name(armv7m
->core_cache
, reg_params
[i
].reg_name
, 0);
386 // uint32_t regvalue;
390 LOG_ERROR("BUG: register '%s' not found", reg_params
[i
].reg_name
);
391 return ERROR_INVALID_ARGUMENTS
;
394 if (reg
->size
!= reg_params
[i
].size
)
396 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params
[i
].reg_name
);
397 return ERROR_INVALID_ARGUMENTS
;
400 // regvalue = buf_get_u32(reg_params[i].value, 0, 32);
401 armv7m_set_core_reg(reg
, reg_params
[i
].value
);
404 if (armv7m_algorithm_info
->core_mode
!= ARMV7M_MODE_ANY
)
406 LOG_DEBUG("setting core_mode: 0x%2.2x", armv7m_algorithm_info
->core_mode
);
407 buf_set_u32(armv7m
->core_cache
->reg_list
[ARMV7M_CONTROL
].value
,
408 0, 1, armv7m_algorithm_info
->core_mode
);
409 armv7m
->core_cache
->reg_list
[ARMV7M_CONTROL
].dirty
= 1;
410 armv7m
->core_cache
->reg_list
[ARMV7M_CONTROL
].valid
= 1;
413 /* REVISIT speed things up (3% or so in one case) by requiring
414 * algorithms to include a BKPT instruction at each exit point.
415 * This eliminates overheads of adding/removing a breakpoint.
418 /* ARMV7M always runs in Thumb state */
419 if ((retval
= breakpoint_add(target
, exit_point
, 2, BKPT_SOFT
)) != ERROR_OK
)
421 LOG_ERROR("can't add breakpoint to finish algorithm execution");
422 return ERROR_TARGET_FAILURE
;
425 retval
= armv7m_run_and_wait(target
, entry_point
, timeout_ms
, exit_point
, armv7m
);
427 breakpoint_remove(target
, exit_point
);
429 if (retval
!= ERROR_OK
)
434 /* Read memory values to mem_params[] */
435 for (int i
= 0; i
< num_mem_params
; i
++)
437 if (mem_params
[i
].direction
!= PARAM_OUT
)
438 if ((retval
= target_read_buffer(target
, mem_params
[i
].address
, mem_params
[i
].size
, mem_params
[i
].value
)) != ERROR_OK
)
444 /* Copy core register values to reg_params[] */
445 for (int i
= 0; i
< num_reg_params
; i
++)
447 if (reg_params
[i
].direction
!= PARAM_OUT
)
449 struct reg
*reg
= register_get_by_name(armv7m
->core_cache
, reg_params
[i
].reg_name
, 0);
453 LOG_ERROR("BUG: register '%s' not found", reg_params
[i
].reg_name
);
454 return ERROR_INVALID_ARGUMENTS
;
457 if (reg
->size
!= reg_params
[i
].size
)
459 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params
[i
].reg_name
);
460 return ERROR_INVALID_ARGUMENTS
;
463 buf_set_u32(reg_params
[i
].value
, 0, 32, buf_get_u32(reg
->value
, 0, 32));
467 for (int i
= ARMV7M_NUM_REGS
- 1; i
>= 0; i
--)
470 regvalue
= buf_get_u32(armv7m
->core_cache
->reg_list
[i
].value
, 0, 32);
471 if (regvalue
!= context
[i
])
473 LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32
,
474 armv7m
->core_cache
->reg_list
[i
].name
, context
[i
]);
475 buf_set_u32(armv7m
->core_cache
->reg_list
[i
].value
,
477 armv7m
->core_cache
->reg_list
[i
].valid
= 1;
478 armv7m
->core_cache
->reg_list
[i
].dirty
= 1;
482 armv7m
->core_mode
= core_mode
;
487 /** Logs summary of ARMv7-M state for a halted target. */
488 int armv7m_arch_state(struct target
*target
)
490 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
493 ctrl
= buf_get_u32(armv7m
->core_cache
->reg_list
[ARMV7M_CONTROL
].value
, 0, 32);
494 sp
= buf_get_u32(armv7m
->core_cache
->reg_list
[ARMV7M_R13
].value
, 0, 32);
496 LOG_USER("target halted due to %s, current mode: %s %s\n"
497 "xPSR: %#8.8" PRIx32
" pc: %#8.8" PRIx32
" %csp: %#8.8" PRIx32
,
498 Jim_Nvp_value2name_simple(nvp_target_debug_reason
,
499 target
->debug_reason
)->name
,
500 armv7m_mode_strings
[armv7m
->core_mode
],
501 armv7m_exception_string(armv7m
->exception_number
),
502 buf_get_u32(armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].value
, 0, 32),
503 buf_get_u32(armv7m
->core_cache
->reg_list
[ARMV7M_PC
].value
, 0, 32),
504 (ctrl
& 0x02) ? 'p' : 'm',
509 static const struct reg_arch_type armv7m_reg_type
= {
510 .get
= armv7m_get_core_reg
,
511 .set
= armv7m_set_core_reg
,
514 /** Builds cache of architecturally defined registers. */
515 struct reg_cache
*armv7m_build_reg_cache(struct target
*target
)
517 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
518 int num_regs
= ARMV7M_NUM_REGS
;
519 struct reg_cache
**cache_p
= register_get_last_cache_p(&target
->reg_cache
);
520 struct reg_cache
*cache
= malloc(sizeof(struct reg_cache
));
521 struct reg
*reg_list
= calloc(num_regs
, sizeof(struct reg
));
522 struct armv7m_core_reg
*arch_info
= calloc(num_regs
, sizeof(struct armv7m_core_reg
));
525 #ifdef ARMV7_GDB_HACKS
526 register_init_dummy(&armv7m_gdb_dummy_cpsr_reg
);
529 /* Build the process context cache */
530 cache
->name
= "arm v7m registers";
532 cache
->reg_list
= reg_list
;
533 cache
->num_regs
= num_regs
;
535 armv7m
->core_cache
= cache
;
537 for (i
= 0; i
< num_regs
; i
++)
539 arch_info
[i
].num
= armv7m_regs
[i
].id
;
540 arch_info
[i
].target
= target
;
541 arch_info
[i
].armv7m_common
= armv7m
;
542 reg_list
[i
].name
= armv7m_regs
[i
].name
;
543 reg_list
[i
].size
= armv7m_regs
[i
].bits
;
544 reg_list
[i
].value
= calloc(1, 4);
545 reg_list
[i
].dirty
= 0;
546 reg_list
[i
].valid
= 0;
547 reg_list
[i
].type
= &armv7m_reg_type
;
548 reg_list
[i
].arch_info
= &arch_info
[i
];
554 /** Sets up target as a generic ARMv7-M core */
555 int armv7m_init_arch_info(struct target
*target
, struct armv7m_common
*armv7m
)
557 /* register arch-specific functions */
559 target
->arch_info
= armv7m
;
560 armv7m
->read_core_reg
= armv7m_read_core_reg
;
561 armv7m
->write_core_reg
= armv7m_write_core_reg
;
566 /** Generates a CRC32 checksum of a memory region. */
567 int armv7m_checksum_memory(struct target
*target
,
568 uint32_t address
, uint32_t count
, uint32_t* checksum
)
570 struct working_area
*crc_algorithm
;
571 struct armv7m_algorithm armv7m_info
;
572 struct reg_param reg_params
[2];
575 static const uint16_t cortex_m3_crc_code
[] = {
576 0x4602, /* mov r2, r0 */
577 0xF04F, 0x30FF, /* mov r0, #0xffffffff */
578 0x460B, /* mov r3, r1 */
579 0xF04F, 0x0400, /* mov r4, #0 */
580 0xE013, /* b ncomp */
582 0x5D11, /* ldrb r1, [r2, r4] */
583 0xF8DF, 0x7028, /* ldr r7, CRC32XOR */
584 0xEA80, 0x6001, /* eor r0, r0, r1, asl #24 */
586 0xF04F, 0x0500, /* mov r5, #0 */
588 0x2800, /* cmp r0, #0 */
589 0xEA4F, 0x0640, /* mov r6, r0, asl #1 */
590 0xF105, 0x0501, /* add r5, r5, #1 */
591 0x4630, /* mov r0, r6 */
593 0xEA86, 0x0007, /* eor r0, r6, r7 */
594 0x2D08, /* cmp r5, #8 */
595 0xD1F4, /* bne loop */
597 0xF104, 0x0401, /* add r4, r4, #1 */
599 0x429C, /* cmp r4, r3 */
600 0xD1E9, /* bne nbyte */
603 0x1DB7, 0x04C1 /* CRC32XOR: .word 0x04C11DB7 */
608 if (target_alloc_working_area(target
, sizeof(cortex_m3_crc_code
), &crc_algorithm
) != ERROR_OK
)
610 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
613 /* convert flash writing code into a buffer in target endianness */
614 for (i
= 0; i
< (sizeof(cortex_m3_crc_code
)/sizeof(uint16_t)); i
++)
615 if ((retval
= target_write_u16(target
, crc_algorithm
->address
+ i
*sizeof(uint16_t), cortex_m3_crc_code
[i
])) != ERROR_OK
)
620 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
621 armv7m_info
.core_mode
= ARMV7M_MODE_ANY
;
623 init_reg_param(®_params
[0], "r0", 32, PARAM_IN_OUT
);
624 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
626 buf_set_u32(reg_params
[0].value
, 0, 32, address
);
627 buf_set_u32(reg_params
[1].value
, 0, 32, count
);
629 if ((retval
= target_run_algorithm(target
, 0, NULL
, 2, reg_params
,
630 crc_algorithm
->address
, crc_algorithm
->address
+ (sizeof(cortex_m3_crc_code
)-6), 20000, &armv7m_info
)) != ERROR_OK
)
632 LOG_ERROR("error executing cortex_m3 crc algorithm");
633 destroy_reg_param(®_params
[0]);
634 destroy_reg_param(®_params
[1]);
635 target_free_working_area(target
, crc_algorithm
);
639 *checksum
= buf_get_u32(reg_params
[0].value
, 0, 32);
641 destroy_reg_param(®_params
[0]);
642 destroy_reg_param(®_params
[1]);
644 target_free_working_area(target
, crc_algorithm
);
649 /** Checks whether a memory region is zeroed. */
650 int armv7m_blank_check_memory(struct target
*target
,
651 uint32_t address
, uint32_t count
, uint32_t* blank
)
653 struct working_area
*erase_check_algorithm
;
654 struct reg_param reg_params
[3];
655 struct armv7m_algorithm armv7m_info
;
659 static const uint16_t erase_check_code
[] =
662 0xF810, 0x3B01, /* ldrb r3, [r0], #1 */
663 0xEA02, 0x0203, /* and r2, r2, r3 */
664 0x3901, /* subs r1, r1, #1 */
665 0xD1F9, /* bne loop */
670 /* make sure we have a working area */
671 if (target_alloc_working_area(target
, sizeof(erase_check_code
), &erase_check_algorithm
) != ERROR_OK
)
673 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
676 /* convert flash writing code into a buffer in target endianness */
677 for (i
= 0; i
< (sizeof(erase_check_code
)/sizeof(uint16_t)); i
++)
678 target_write_u16(target
, erase_check_algorithm
->address
+ i
*sizeof(uint16_t), erase_check_code
[i
]);
680 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
681 armv7m_info
.core_mode
= ARMV7M_MODE_ANY
;
683 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
684 buf_set_u32(reg_params
[0].value
, 0, 32, address
);
686 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
687 buf_set_u32(reg_params
[1].value
, 0, 32, count
);
689 init_reg_param(®_params
[2], "r2", 32, PARAM_IN_OUT
);
690 buf_set_u32(reg_params
[2].value
, 0, 32, 0xff);
692 if ((retval
= target_run_algorithm(target
, 0, NULL
, 3, reg_params
,
693 erase_check_algorithm
->address
, erase_check_algorithm
->address
+ (sizeof(erase_check_code
)-2), 10000, &armv7m_info
)) != ERROR_OK
)
695 destroy_reg_param(®_params
[0]);
696 destroy_reg_param(®_params
[1]);
697 destroy_reg_param(®_params
[2]);
698 target_free_working_area(target
, erase_check_algorithm
);
702 *blank
= buf_get_u32(reg_params
[2].value
, 0, 32);
704 destroy_reg_param(®_params
[0]);
705 destroy_reg_param(®_params
[1]);
706 destroy_reg_param(®_params
[2]);
708 target_free_working_area(target
, erase_check_algorithm
);
713 /*--------------------------------------------------------------------------*/
716 * Only stuff below this line should need to verify that its target
717 * is an ARMv7-M node.
719 * FIXME yet none of it _does_ verify target types yet!
724 * Return the debug ap baseaddress in hexadecimal;
725 * no extra output to simplify script processing
727 COMMAND_HANDLER(handle_dap_baseaddr_command
)
729 struct target
*target
= get_current_target(CMD_CTX
);
730 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
731 struct swjdp_common
*swjdp
= &armv7m
->swjdp_info
;
732 uint32_t apsel
, apselsave
, baseaddr
;
735 apselsave
= swjdp
->apsel
;
738 apsel
= swjdp
->apsel
;
741 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], apsel
);
744 return ERROR_COMMAND_SYNTAX_ERROR
;
747 if (apselsave
!= apsel
)
748 dap_ap_select(swjdp
, apsel
);
750 dap_ap_read_reg_u32(swjdp
, 0xF8, &baseaddr
);
751 retval
= swjdp_transaction_endcheck(swjdp
);
752 command_print(CMD_CTX
, "0x%8.8" PRIx32
"", baseaddr
);
754 if (apselsave
!= apsel
)
755 dap_ap_select(swjdp
, apselsave
);
761 * Return the debug ap id in hexadecimal;
762 * no extra output to simplify script processing
764 COMMAND_HANDLER(handle_dap_apid_command
)
766 struct target
*target
= get_current_target(CMD_CTX
);
767 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
768 struct swjdp_common
*swjdp
= &armv7m
->swjdp_info
;
770 return CALL_COMMAND_HANDLER(dap_apid_command
, swjdp
);
773 COMMAND_HANDLER(handle_dap_apsel_command
)
775 struct target
*target
= get_current_target(CMD_CTX
);
776 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
777 struct swjdp_common
*swjdp
= &armv7m
->swjdp_info
;
779 return CALL_COMMAND_HANDLER(dap_apsel_command
, swjdp
);
782 COMMAND_HANDLER(handle_dap_memaccess_command
)
784 struct target
*target
= get_current_target(CMD_CTX
);
785 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
786 struct swjdp_common
*swjdp
= &armv7m
->swjdp_info
;
788 return CALL_COMMAND_HANDLER(dap_memaccess_command
, swjdp
);
792 COMMAND_HANDLER(handle_dap_info_command
)
794 struct target
*target
= get_current_target(CMD_CTX
);
795 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
796 struct swjdp_common
*swjdp
= &armv7m
->swjdp_info
;
801 apsel
= swjdp
->apsel
;
804 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], apsel
);
807 return ERROR_COMMAND_SYNTAX_ERROR
;
810 return dap_info_command(CMD_CTX
, swjdp
, apsel
);
813 /** Registers commands used to access DAP resources. */
814 int armv7m_register_commands(struct command_context
*cmd_ctx
)
816 struct command
*arm_adi_v5_dap_cmd
;
818 arm_adi_v5_dap_cmd
= register_command(cmd_ctx
, NULL
, "dap",
820 "cortex dap specific commands");
822 register_command(cmd_ctx
, arm_adi_v5_dap_cmd
, "info",
823 handle_dap_info_command
, COMMAND_EXEC
,
824 "Displays dap info for ap [num],"
825 "default currently selected AP");
826 register_command(cmd_ctx
, arm_adi_v5_dap_cmd
, "apsel",
827 handle_dap_apsel_command
, COMMAND_EXEC
,
828 "Select a different AP [num] (default 0)");
829 register_command(cmd_ctx
, arm_adi_v5_dap_cmd
, "apid",
830 handle_dap_apid_command
, COMMAND_EXEC
,
831 "Displays id reg from AP [num], "
832 "default currently selected AP");
833 register_command(cmd_ctx
, arm_adi_v5_dap_cmd
, "baseaddr",
834 handle_dap_baseaddr_command
, COMMAND_EXEC
,
835 "Displays debug base address from AP [num],"
836 "default currently selected AP");
837 register_command(cmd_ctx
, arm_adi_v5_dap_cmd
, "memaccess",
838 handle_dap_memaccess_command
, COMMAND_EXEC
,
839 "set/get number of extra tck for mem-ap "
840 "memory bus access [0-255]");