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) 2009 by Dirk Behme *
12 * dirk.behme@gmail.com - copy from cortex_m3 *
14 * Copyright (C) 2010 Øyvind Harboe *
15 * oyvind.harboe@zylin.com *
17 * Copyright (C) ST-Ericsson SA 2011 *
18 * michel.jaouen@stericsson.com : smp minimum support *
20 * This program is free software; you can redistribute it and/or modify *
21 * it under the terms of the GNU General Public License as published by *
22 * the Free Software Foundation; either version 2 of the License, or *
23 * (at your option) any later version. *
25 * This program is distributed in the hope that it will be useful, *
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
28 * GNU General Public License for more details. *
30 * You should have received a copy of the GNU General Public License *
31 * along with this program; if not, write to the *
32 * Free Software Foundation, Inc., *
33 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
35 * Cortex-A8(tm) TRM, ARM DDI 0344H *
36 * Cortex-A9(tm) TRM, ARM DDI 0407F *
38 ***************************************************************************/
44 #include "breakpoints.h"
47 #include "target_request.h"
48 #include "target_type.h"
49 #include "arm_opcodes.h"
50 #include <helper/time_support.h>
52 static int cortex_a8_poll(struct target
*target
);
53 static int cortex_a8_debug_entry(struct target
*target
);
54 static int cortex_a8_restore_context(struct target
*target
, bool bpwp
);
55 static int cortex_a8_set_breakpoint(struct target
*target
,
56 struct breakpoint
*breakpoint
, uint8_t matchmode
);
57 static int cortex_a8_set_context_breakpoint(struct target
*target
,
58 struct breakpoint
*breakpoint
, uint8_t matchmode
);
59 static int cortex_a8_set_hybrid_breakpoint(struct target
*target
,
60 struct breakpoint
*breakpoint
);
61 static int cortex_a8_unset_breakpoint(struct target
*target
,
62 struct breakpoint
*breakpoint
);
63 static int cortex_a8_dap_read_coreregister_u32(struct target
*target
,
64 uint32_t *value
, int regnum
);
65 static int cortex_a8_dap_write_coreregister_u32(struct target
*target
,
66 uint32_t value
, int regnum
);
67 static int cortex_a8_mmu(struct target
*target
, int *enabled
);
68 static int cortex_a8_virt2phys(struct target
*target
,
69 uint32_t virt
, uint32_t *phys
);
70 static int cortex_a8_read_apb_ab_memory(struct target
*target
,
71 uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
);
74 * FIXME do topology discovery using the ROM; don't
75 * assume this is an OMAP3. Also, allow for multiple ARMv7-A
76 * cores, with different AP numbering ... don't use a #define
77 * for these numbers, use per-core armv7a state.
79 #define swjdp_memoryap 0
80 #define swjdp_debugap 1
82 /* restore cp15_control_reg at resume */
83 static int cortex_a8_restore_cp15_control_reg(struct target
*target
)
85 int retval
= ERROR_OK
;
86 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
87 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
89 if (cortex_a8
->cp15_control_reg
!= cortex_a8
->cp15_control_reg_curr
) {
90 cortex_a8
->cp15_control_reg_curr
= cortex_a8
->cp15_control_reg
;
91 /* LOG_INFO("cp15_control_reg: %8.8" PRIx32, cortex_a8->cp15_control_reg); */
92 retval
= armv7a
->arm
.mcr(target
, 15,
95 cortex_a8
->cp15_control_reg
);
100 /* check address before cortex_a8_apb read write access with mmu on
101 * remove apb predictible data abort */
102 static int cortex_a8_check_address(struct target
*target
, uint32_t address
)
104 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
105 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
106 uint32_t os_border
= armv7a
->armv7a_mmu
.os_border
;
107 if ((address
< os_border
) &&
108 (armv7a
->arm
.core_mode
== ARM_MODE_SVC
)) {
109 LOG_ERROR("%x access in userspace and target in supervisor", address
);
112 if ((address
>= os_border
) &&
113 (cortex_a8
->curr_mode
!= ARM_MODE_SVC
)) {
114 dpm_modeswitch(&armv7a
->dpm
, ARM_MODE_SVC
);
115 cortex_a8
->curr_mode
= ARM_MODE_SVC
;
116 LOG_INFO("%x access in kernel space and target not in supervisor",
120 if ((address
< os_border
) &&
121 (cortex_a8
->curr_mode
== ARM_MODE_SVC
)) {
122 dpm_modeswitch(&armv7a
->dpm
, ARM_MODE_ANY
);
123 cortex_a8
->curr_mode
= ARM_MODE_ANY
;
127 /* modify cp15_control_reg in order to enable or disable mmu for :
128 * - virt2phys address conversion
129 * - read or write memory in phys or virt address */
130 static int cortex_a8_mmu_modify(struct target
*target
, int enable
)
132 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
133 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
134 int retval
= ERROR_OK
;
136 /* if mmu enabled at target stop and mmu not enable */
137 if (!(cortex_a8
->cp15_control_reg
& 0x1U
)) {
138 LOG_ERROR("trying to enable mmu on target stopped with mmu disable");
141 if (!(cortex_a8
->cp15_control_reg_curr
& 0x1U
)) {
142 cortex_a8
->cp15_control_reg_curr
|= 0x1U
;
143 retval
= armv7a
->arm
.mcr(target
, 15,
146 cortex_a8
->cp15_control_reg_curr
);
149 if (cortex_a8
->cp15_control_reg_curr
& 0x4U
) {
150 /* data cache is active */
151 cortex_a8
->cp15_control_reg_curr
&= ~0x4U
;
152 /* flush data cache armv7 function to be called */
153 if (armv7a
->armv7a_mmu
.armv7a_cache
.flush_all_data_cache
)
154 armv7a
->armv7a_mmu
.armv7a_cache
.flush_all_data_cache(target
);
156 if ((cortex_a8
->cp15_control_reg_curr
& 0x1U
)) {
157 cortex_a8
->cp15_control_reg_curr
&= ~0x1U
;
158 retval
= armv7a
->arm
.mcr(target
, 15,
161 cortex_a8
->cp15_control_reg_curr
);
168 * Cortex-A8 Basic debug access, very low level assumes state is saved
170 static int cortex_a8_init_debug_access(struct target
*target
)
172 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
173 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
179 /* Unlocking the debug registers for modification
180 * The debugport might be uninitialised so try twice */
181 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
182 armv7a
->debug_base
+ CPUDBG_LOCKACCESS
, 0xC5ACCE55);
183 if (retval
!= ERROR_OK
) {
185 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
186 armv7a
->debug_base
+ CPUDBG_LOCKACCESS
, 0xC5ACCE55);
187 if (retval
== ERROR_OK
)
189 "Locking debug access failed on first, but succeeded on second try.");
191 if (retval
!= ERROR_OK
)
193 /* Clear Sticky Power Down status Bit in PRSR to enable access to
194 the registers in the Core Power Domain */
195 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
196 armv7a
->debug_base
+ CPUDBG_PRSR
, &dummy
);
197 if (retval
!= ERROR_OK
)
200 /* Enabling of instruction execution in debug mode is done in debug_entry code */
202 /* Resync breakpoint registers */
204 /* Since this is likely called from init or reset, update target state information*/
205 return cortex_a8_poll(target
);
208 /* To reduce needless round-trips, pass in a pointer to the current
209 * DSCR value. Initialize it to zero if you just need to know the
210 * value on return from this function; or DSCR_INSTR_COMP if you
211 * happen to know that no instruction is pending.
213 static int cortex_a8_exec_opcode(struct target
*target
,
214 uint32_t opcode
, uint32_t *dscr_p
)
218 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
219 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
221 dscr
= dscr_p
? *dscr_p
: 0;
223 LOG_DEBUG("exec opcode 0x%08" PRIx32
, opcode
);
225 /* Wait for InstrCompl bit to be set */
226 long long then
= timeval_ms();
227 while ((dscr
& DSCR_INSTR_COMP
) == 0) {
228 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
229 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
230 if (retval
!= ERROR_OK
) {
231 LOG_ERROR("Could not read DSCR register, opcode = 0x%08" PRIx32
, opcode
);
234 if (timeval_ms() > then
+ 1000) {
235 LOG_ERROR("Timeout waiting for cortex_a8_exec_opcode");
240 retval
= mem_ap_sel_write_u32(swjdp
, swjdp_debugap
,
241 armv7a
->debug_base
+ CPUDBG_ITR
, opcode
);
242 if (retval
!= ERROR_OK
)
247 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
248 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
249 if (retval
!= ERROR_OK
) {
250 LOG_ERROR("Could not read DSCR register");
253 if (timeval_ms() > then
+ 1000) {
254 LOG_ERROR("Timeout waiting for cortex_a8_exec_opcode");
257 } while ((dscr
& DSCR_INSTR_COMP
) == 0); /* Wait for InstrCompl bit to be set */
265 /**************************************************************************
266 Read core register with very few exec_opcode, fast but needs work_area.
267 This can cause problems with MMU active.
268 **************************************************************************/
269 static int cortex_a8_read_regs_through_mem(struct target
*target
, uint32_t address
,
272 int retval
= ERROR_OK
;
273 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
274 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
276 retval
= cortex_a8_dap_read_coreregister_u32(target
, regfile
, 0);
277 if (retval
!= ERROR_OK
)
279 retval
= cortex_a8_dap_write_coreregister_u32(target
, address
, 0);
280 if (retval
!= ERROR_OK
)
282 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_STMIA(0, 0xFFFE, 0, 0), NULL
);
283 if (retval
!= ERROR_OK
)
286 retval
= mem_ap_sel_read_buf_u32(swjdp
, swjdp_memoryap
,
287 (uint8_t *)(®file
[1]), 4*15, address
);
292 static int cortex_a8_dap_read_coreregister_u32(struct target
*target
,
293 uint32_t *value
, int regnum
)
295 int retval
= ERROR_OK
;
296 uint8_t reg
= regnum
&0xFF;
298 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
299 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
305 /* Rn to DCCTX, "MCR p14, 0, Rn, c0, c5, 0" 0xEE00nE15 */
306 retval
= cortex_a8_exec_opcode(target
,
307 ARMV4_5_MCR(14, 0, reg
, 0, 5, 0),
309 if (retval
!= ERROR_OK
)
311 } else if (reg
== 15) {
312 /* "MOV r0, r15"; then move r0 to DCCTX */
313 retval
= cortex_a8_exec_opcode(target
, 0xE1A0000F, &dscr
);
314 if (retval
!= ERROR_OK
)
316 retval
= cortex_a8_exec_opcode(target
,
317 ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
319 if (retval
!= ERROR_OK
)
322 /* "MRS r0, CPSR" or "MRS r0, SPSR"
323 * then move r0 to DCCTX
325 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_MRS(0, reg
& 1), &dscr
);
326 if (retval
!= ERROR_OK
)
328 retval
= cortex_a8_exec_opcode(target
,
329 ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
331 if (retval
!= ERROR_OK
)
335 /* Wait for DTRRXfull then read DTRRTX */
336 long long then
= timeval_ms();
337 while ((dscr
& DSCR_DTR_TX_FULL
) == 0) {
338 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
339 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
340 if (retval
!= ERROR_OK
)
342 if (timeval_ms() > then
+ 1000) {
343 LOG_ERROR("Timeout waiting for cortex_a8_exec_opcode");
348 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
349 armv7a
->debug_base
+ CPUDBG_DTRTX
, value
);
350 LOG_DEBUG("read DCC 0x%08" PRIx32
, *value
);
355 static int cortex_a8_dap_write_coreregister_u32(struct target
*target
,
356 uint32_t value
, int regnum
)
358 int retval
= ERROR_OK
;
359 uint8_t Rd
= regnum
&0xFF;
361 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
362 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
364 LOG_DEBUG("register %i, value 0x%08" PRIx32
, regnum
, value
);
366 /* Check that DCCRX is not full */
367 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
368 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
369 if (retval
!= ERROR_OK
)
371 if (dscr
& DSCR_DTR_RX_FULL
) {
372 LOG_ERROR("DSCR_DTR_RX_FULL, dscr 0x%08" PRIx32
, dscr
);
373 /* Clear DCCRX with MRC(p14, 0, Rd, c0, c5, 0), opcode 0xEE100E15 */
374 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
376 if (retval
!= ERROR_OK
)
383 /* Write DTRRX ... sets DSCR.DTRRXfull but exec_opcode() won't care */
384 LOG_DEBUG("write DCC 0x%08" PRIx32
, value
);
385 retval
= mem_ap_sel_write_u32(swjdp
, swjdp_debugap
,
386 armv7a
->debug_base
+ CPUDBG_DTRRX
, value
);
387 if (retval
!= ERROR_OK
)
391 /* DCCRX to Rn, "MRC p14, 0, Rn, c0, c5, 0", 0xEE10nE15 */
392 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, Rd
, 0, 5, 0),
395 if (retval
!= ERROR_OK
)
397 } else if (Rd
== 15) {
398 /* DCCRX to R0, "MRC p14, 0, R0, c0, c5, 0", 0xEE100E15
401 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
403 if (retval
!= ERROR_OK
)
405 retval
= cortex_a8_exec_opcode(target
, 0xE1A0F000, &dscr
);
406 if (retval
!= ERROR_OK
)
409 /* DCCRX to R0, "MRC p14, 0, R0, c0, c5, 0", 0xEE100E15
410 * then "MSR CPSR_cxsf, r0" or "MSR SPSR_cxsf, r0" (all fields)
412 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
414 if (retval
!= ERROR_OK
)
416 retval
= cortex_a8_exec_opcode(target
, ARMV4_5_MSR_GP(0, 0xF, Rd
& 1),
418 if (retval
!= ERROR_OK
)
421 /* "Prefetch flush" after modifying execution status in CPSR */
423 retval
= cortex_a8_exec_opcode(target
,
424 ARMV4_5_MCR(15, 0, 0, 7, 5, 4),
426 if (retval
!= ERROR_OK
)
434 /* Write to memory mapped registers directly with no cache or mmu handling */
435 static int cortex_a8_dap_write_memap_register_u32(struct target
*target
,
440 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
441 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
443 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
, address
, value
);
449 * Cortex-A8 implementation of Debug Programmer's Model
451 * NOTE the invariant: these routines return with DSCR_INSTR_COMP set,
452 * so there's no need to poll for it before executing an instruction.
454 * NOTE that in several of these cases the "stall" mode might be useful.
455 * It'd let us queue a few operations together... prepare/finish might
456 * be the places to enable/disable that mode.
459 static inline struct cortex_a8_common
*dpm_to_a8(struct arm_dpm
*dpm
)
461 return container_of(dpm
, struct cortex_a8_common
, armv7a_common
.dpm
);
464 static int cortex_a8_write_dcc(struct cortex_a8_common
*a8
, uint32_t data
)
466 LOG_DEBUG("write DCC 0x%08" PRIx32
, data
);
467 return mem_ap_sel_write_u32(a8
->armv7a_common
.arm
.dap
,
468 swjdp_debugap
, a8
->armv7a_common
.debug_base
+ CPUDBG_DTRRX
, data
);
471 static int cortex_a8_read_dcc(struct cortex_a8_common
*a8
, uint32_t *data
,
474 struct adiv5_dap
*swjdp
= a8
->armv7a_common
.arm
.dap
;
475 uint32_t dscr
= DSCR_INSTR_COMP
;
481 /* Wait for DTRRXfull */
482 long long then
= timeval_ms();
483 while ((dscr
& DSCR_DTR_TX_FULL
) == 0) {
484 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
485 a8
->armv7a_common
.debug_base
+ CPUDBG_DSCR
,
487 if (retval
!= ERROR_OK
)
489 if (timeval_ms() > then
+ 1000) {
490 LOG_ERROR("Timeout waiting for read dcc");
495 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
496 a8
->armv7a_common
.debug_base
+ CPUDBG_DTRTX
, data
);
497 if (retval
!= ERROR_OK
)
499 /* LOG_DEBUG("read DCC 0x%08" PRIx32, *data); */
507 static int cortex_a8_dpm_prepare(struct arm_dpm
*dpm
)
509 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
510 struct adiv5_dap
*swjdp
= a8
->armv7a_common
.arm
.dap
;
514 /* set up invariant: INSTR_COMP is set after ever DPM operation */
515 long long then
= timeval_ms();
517 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
518 a8
->armv7a_common
.debug_base
+ CPUDBG_DSCR
,
520 if (retval
!= ERROR_OK
)
522 if ((dscr
& DSCR_INSTR_COMP
) != 0)
524 if (timeval_ms() > then
+ 1000) {
525 LOG_ERROR("Timeout waiting for dpm prepare");
530 /* this "should never happen" ... */
531 if (dscr
& DSCR_DTR_RX_FULL
) {
532 LOG_ERROR("DSCR_DTR_RX_FULL, dscr 0x%08" PRIx32
, dscr
);
534 retval
= cortex_a8_exec_opcode(
535 a8
->armv7a_common
.arm
.target
,
536 ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
538 if (retval
!= ERROR_OK
)
545 static int cortex_a8_dpm_finish(struct arm_dpm
*dpm
)
547 /* REVISIT what could be done here? */
551 static int cortex_a8_instr_write_data_dcc(struct arm_dpm
*dpm
,
552 uint32_t opcode
, uint32_t data
)
554 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
556 uint32_t dscr
= DSCR_INSTR_COMP
;
558 retval
= cortex_a8_write_dcc(a8
, data
);
559 if (retval
!= ERROR_OK
)
562 return cortex_a8_exec_opcode(
563 a8
->armv7a_common
.arm
.target
,
568 static int cortex_a8_instr_write_data_r0(struct arm_dpm
*dpm
,
569 uint32_t opcode
, uint32_t data
)
571 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
572 uint32_t dscr
= DSCR_INSTR_COMP
;
575 retval
= cortex_a8_write_dcc(a8
, data
);
576 if (retval
!= ERROR_OK
)
579 /* DCCRX to R0, "MCR p14, 0, R0, c0, c5, 0", 0xEE000E15 */
580 retval
= cortex_a8_exec_opcode(
581 a8
->armv7a_common
.arm
.target
,
582 ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
584 if (retval
!= ERROR_OK
)
587 /* then the opcode, taking data from R0 */
588 retval
= cortex_a8_exec_opcode(
589 a8
->armv7a_common
.arm
.target
,
596 static int cortex_a8_instr_cpsr_sync(struct arm_dpm
*dpm
)
598 struct target
*target
= dpm
->arm
->target
;
599 uint32_t dscr
= DSCR_INSTR_COMP
;
601 /* "Prefetch flush" after modifying execution status in CPSR */
602 return cortex_a8_exec_opcode(target
,
603 ARMV4_5_MCR(15, 0, 0, 7, 5, 4),
607 static int cortex_a8_instr_read_data_dcc(struct arm_dpm
*dpm
,
608 uint32_t opcode
, uint32_t *data
)
610 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
612 uint32_t dscr
= DSCR_INSTR_COMP
;
614 /* the opcode, writing data to DCC */
615 retval
= cortex_a8_exec_opcode(
616 a8
->armv7a_common
.arm
.target
,
619 if (retval
!= ERROR_OK
)
622 return cortex_a8_read_dcc(a8
, data
, &dscr
);
626 static int cortex_a8_instr_read_data_r0(struct arm_dpm
*dpm
,
627 uint32_t opcode
, uint32_t *data
)
629 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
630 uint32_t dscr
= DSCR_INSTR_COMP
;
633 /* the opcode, writing data to R0 */
634 retval
= cortex_a8_exec_opcode(
635 a8
->armv7a_common
.arm
.target
,
638 if (retval
!= ERROR_OK
)
641 /* write R0 to DCC */
642 retval
= cortex_a8_exec_opcode(
643 a8
->armv7a_common
.arm
.target
,
644 ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
646 if (retval
!= ERROR_OK
)
649 return cortex_a8_read_dcc(a8
, data
, &dscr
);
652 static int cortex_a8_bpwp_enable(struct arm_dpm
*dpm
, unsigned index_t
,
653 uint32_t addr
, uint32_t control
)
655 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
656 uint32_t vr
= a8
->armv7a_common
.debug_base
;
657 uint32_t cr
= a8
->armv7a_common
.debug_base
;
661 case 0 ... 15: /* breakpoints */
662 vr
+= CPUDBG_BVR_BASE
;
663 cr
+= CPUDBG_BCR_BASE
;
665 case 16 ... 31: /* watchpoints */
666 vr
+= CPUDBG_WVR_BASE
;
667 cr
+= CPUDBG_WCR_BASE
;
676 LOG_DEBUG("A8: bpwp enable, vr %08x cr %08x",
677 (unsigned) vr
, (unsigned) cr
);
679 retval
= cortex_a8_dap_write_memap_register_u32(dpm
->arm
->target
,
681 if (retval
!= ERROR_OK
)
683 retval
= cortex_a8_dap_write_memap_register_u32(dpm
->arm
->target
,
688 static int cortex_a8_bpwp_disable(struct arm_dpm
*dpm
, unsigned index_t
)
690 struct cortex_a8_common
*a8
= dpm_to_a8(dpm
);
695 cr
= a8
->armv7a_common
.debug_base
+ CPUDBG_BCR_BASE
;
698 cr
= a8
->armv7a_common
.debug_base
+ CPUDBG_WCR_BASE
;
706 LOG_DEBUG("A8: bpwp disable, cr %08x", (unsigned) cr
);
708 /* clear control register */
709 return cortex_a8_dap_write_memap_register_u32(dpm
->arm
->target
, cr
, 0);
712 static int cortex_a8_dpm_setup(struct cortex_a8_common
*a8
, uint32_t didr
)
714 struct arm_dpm
*dpm
= &a8
->armv7a_common
.dpm
;
717 dpm
->arm
= &a8
->armv7a_common
.arm
;
720 dpm
->prepare
= cortex_a8_dpm_prepare
;
721 dpm
->finish
= cortex_a8_dpm_finish
;
723 dpm
->instr_write_data_dcc
= cortex_a8_instr_write_data_dcc
;
724 dpm
->instr_write_data_r0
= cortex_a8_instr_write_data_r0
;
725 dpm
->instr_cpsr_sync
= cortex_a8_instr_cpsr_sync
;
727 dpm
->instr_read_data_dcc
= cortex_a8_instr_read_data_dcc
;
728 dpm
->instr_read_data_r0
= cortex_a8_instr_read_data_r0
;
730 dpm
->bpwp_enable
= cortex_a8_bpwp_enable
;
731 dpm
->bpwp_disable
= cortex_a8_bpwp_disable
;
733 retval
= arm_dpm_setup(dpm
);
734 if (retval
== ERROR_OK
)
735 retval
= arm_dpm_initialize(dpm
);
739 static struct target
*get_cortex_a8(struct target
*target
, int32_t coreid
)
741 struct target_list
*head
;
745 while (head
!= (struct target_list
*)NULL
) {
747 if ((curr
->coreid
== coreid
) && (curr
->state
== TARGET_HALTED
))
753 static int cortex_a8_halt(struct target
*target
);
755 static int cortex_a8_halt_smp(struct target
*target
)
758 struct target_list
*head
;
761 while (head
!= (struct target_list
*)NULL
) {
763 if ((curr
!= target
) && (curr
->state
!= TARGET_HALTED
))
764 retval
+= cortex_a8_halt(curr
);
770 static int update_halt_gdb(struct target
*target
)
773 if (target
->gdb_service
->core
[0] == -1) {
774 target
->gdb_service
->target
= target
;
775 target
->gdb_service
->core
[0] = target
->coreid
;
776 retval
+= cortex_a8_halt_smp(target
);
782 * Cortex-A8 Run control
785 static int cortex_a8_poll(struct target
*target
)
787 int retval
= ERROR_OK
;
789 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
790 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
791 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
792 enum target_state prev_target_state
= target
->state
;
793 /* toggle to another core is done by gdb as follow */
794 /* maint packet J core_id */
796 /* the next polling trigger an halt event sent to gdb */
797 if ((target
->state
== TARGET_HALTED
) && (target
->smp
) &&
798 (target
->gdb_service
) &&
799 (target
->gdb_service
->target
== NULL
)) {
800 target
->gdb_service
->target
=
801 get_cortex_a8(target
, target
->gdb_service
->core
[1]);
802 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
805 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
806 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
807 if (retval
!= ERROR_OK
)
809 cortex_a8
->cpudbg_dscr
= dscr
;
811 if (DSCR_RUN_MODE(dscr
) == (DSCR_CORE_HALTED
| DSCR_CORE_RESTARTED
)) {
812 if (prev_target_state
!= TARGET_HALTED
) {
813 /* We have a halting debug event */
814 LOG_DEBUG("Target halted");
815 target
->state
= TARGET_HALTED
;
816 if ((prev_target_state
== TARGET_RUNNING
)
817 || (prev_target_state
== TARGET_UNKNOWN
)
818 || (prev_target_state
== TARGET_RESET
)) {
819 retval
= cortex_a8_debug_entry(target
);
820 if (retval
!= ERROR_OK
)
823 retval
= update_halt_gdb(target
);
824 if (retval
!= ERROR_OK
)
827 target_call_event_callbacks(target
,
828 TARGET_EVENT_HALTED
);
830 if (prev_target_state
== TARGET_DEBUG_RUNNING
) {
833 retval
= cortex_a8_debug_entry(target
);
834 if (retval
!= ERROR_OK
)
837 retval
= update_halt_gdb(target
);
838 if (retval
!= ERROR_OK
)
842 target_call_event_callbacks(target
,
843 TARGET_EVENT_DEBUG_HALTED
);
846 } else if (DSCR_RUN_MODE(dscr
) == DSCR_CORE_RESTARTED
)
847 target
->state
= TARGET_RUNNING
;
849 LOG_DEBUG("Unknown target state dscr = 0x%08" PRIx32
, dscr
);
850 target
->state
= TARGET_UNKNOWN
;
856 static int cortex_a8_halt(struct target
*target
)
858 int retval
= ERROR_OK
;
860 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
861 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
864 * Tell the core to be halted by writing DRCR with 0x1
865 * and then wait for the core to be halted.
867 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
868 armv7a
->debug_base
+ CPUDBG_DRCR
, DRCR_HALT
);
869 if (retval
!= ERROR_OK
)
873 * enter halting debug mode
875 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
876 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
877 if (retval
!= ERROR_OK
)
880 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
881 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
| DSCR_HALT_DBG_MODE
);
882 if (retval
!= ERROR_OK
)
885 long long then
= timeval_ms();
887 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
888 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
889 if (retval
!= ERROR_OK
)
891 if ((dscr
& DSCR_CORE_HALTED
) != 0)
893 if (timeval_ms() > then
+ 1000) {
894 LOG_ERROR("Timeout waiting for halt");
899 target
->debug_reason
= DBG_REASON_DBGRQ
;
904 static int cortex_a8_internal_restore(struct target
*target
, int current
,
905 uint32_t *address
, int handle_breakpoints
, int debug_execution
)
907 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
908 struct arm
*arm
= &armv7a
->arm
;
912 if (!debug_execution
)
913 target_free_all_working_areas(target
);
916 if (debug_execution
) {
917 /* Disable interrupts */
918 /* We disable interrupts in the PRIMASK register instead of
919 * masking with C_MASKINTS,
920 * This is probably the same issue as Cortex-M3 Errata 377493:
921 * C_MASKINTS in parallel with disabled interrupts can cause
922 * local faults to not be taken. */
923 buf_set_u32(armv7m
->core_cache
->reg_list
[ARMV7M_PRIMASK
].value
, 0, 32, 1);
924 armv7m
->core_cache
->reg_list
[ARMV7M_PRIMASK
].dirty
= 1;
925 armv7m
->core_cache
->reg_list
[ARMV7M_PRIMASK
].valid
= 1;
927 /* Make sure we are in Thumb mode */
928 buf_set_u32(armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].value
, 0, 32,
929 buf_get_u32(armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].value
, 0,
931 armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].dirty
= 1;
932 armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].valid
= 1;
936 /* current = 1: continue on current pc, otherwise continue at <address> */
937 resume_pc
= buf_get_u32(arm
->pc
->value
, 0, 32);
939 resume_pc
= *address
;
941 *address
= resume_pc
;
943 /* Make sure that the Armv7 gdb thumb fixups does not
944 * kill the return address
946 switch (arm
->core_state
) {
948 resume_pc
&= 0xFFFFFFFC;
950 case ARM_STATE_THUMB
:
951 case ARM_STATE_THUMB_EE
:
952 /* When the return address is loaded into PC
953 * bit 0 must be 1 to stay in Thumb state
957 case ARM_STATE_JAZELLE
:
958 LOG_ERROR("How do I resume into Jazelle state??");
961 LOG_DEBUG("resume pc = 0x%08" PRIx32
, resume_pc
);
962 buf_set_u32(arm
->pc
->value
, 0, 32, resume_pc
);
965 /* restore dpm_mode at system halt */
966 dpm_modeswitch(&armv7a
->dpm
, ARM_MODE_ANY
);
967 /* called it now before restoring context because it uses cpu
968 * register r0 for restoring cp15 control register */
969 retval
= cortex_a8_restore_cp15_control_reg(target
);
970 if (retval
!= ERROR_OK
)
972 retval
= cortex_a8_restore_context(target
, handle_breakpoints
);
973 if (retval
!= ERROR_OK
)
975 target
->debug_reason
= DBG_REASON_NOTHALTED
;
976 target
->state
= TARGET_RUNNING
;
978 /* registers are now invalid */
979 register_cache_invalidate(arm
->core_cache
);
982 /* the front-end may request us not to handle breakpoints */
983 if (handle_breakpoints
) {
984 /* Single step past breakpoint at current address */
985 breakpoint
= breakpoint_find(target
, resume_pc
);
987 LOG_DEBUG("unset breakpoint at 0x%8.8x", breakpoint
->address
);
988 cortex_m3_unset_breakpoint(target
, breakpoint
);
989 cortex_m3_single_step_core(target
);
990 cortex_m3_set_breakpoint(target
, breakpoint
);
998 static int cortex_a8_internal_restart(struct target
*target
)
1000 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1001 struct arm
*arm
= &armv7a
->arm
;
1002 struct adiv5_dap
*swjdp
= arm
->dap
;
1006 * * Restart core and wait for it to be started. Clear ITRen and sticky
1007 * * exception flags: see ARMv7 ARM, C5.9.
1009 * REVISIT: for single stepping, we probably want to
1010 * disable IRQs by default, with optional override...
1013 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
1014 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1015 if (retval
!= ERROR_OK
)
1018 if ((dscr
& DSCR_INSTR_COMP
) == 0)
1019 LOG_ERROR("DSCR InstrCompl must be set before leaving debug!");
1021 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
1022 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
& ~DSCR_ITR_EN
);
1023 if (retval
!= ERROR_OK
)
1026 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
1027 armv7a
->debug_base
+ CPUDBG_DRCR
, DRCR_RESTART
|
1028 DRCR_CLEAR_EXCEPTIONS
);
1029 if (retval
!= ERROR_OK
)
1032 long long then
= timeval_ms();
1034 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
1035 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1036 if (retval
!= ERROR_OK
)
1038 if ((dscr
& DSCR_CORE_RESTARTED
) != 0)
1040 if (timeval_ms() > then
+ 1000) {
1041 LOG_ERROR("Timeout waiting for resume");
1046 target
->debug_reason
= DBG_REASON_NOTHALTED
;
1047 target
->state
= TARGET_RUNNING
;
1049 /* registers are now invalid */
1050 register_cache_invalidate(arm
->core_cache
);
1055 static int cortex_a8_restore_smp(struct target
*target
, int handle_breakpoints
)
1058 struct target_list
*head
;
1059 struct target
*curr
;
1061 head
= target
->head
;
1062 while (head
!= (struct target_list
*)NULL
) {
1063 curr
= head
->target
;
1064 if ((curr
!= target
) && (curr
->state
!= TARGET_RUNNING
)) {
1065 /* resume current address , not in step mode */
1066 retval
+= cortex_a8_internal_restore(curr
, 1, &address
,
1067 handle_breakpoints
, 0);
1068 retval
+= cortex_a8_internal_restart(curr
);
1076 static int cortex_a8_resume(struct target
*target
, int current
,
1077 uint32_t address
, int handle_breakpoints
, int debug_execution
)
1080 /* dummy resume for smp toggle in order to reduce gdb impact */
1081 if ((target
->smp
) && (target
->gdb_service
->core
[1] != -1)) {
1082 /* simulate a start and halt of target */
1083 target
->gdb_service
->target
= NULL
;
1084 target
->gdb_service
->core
[0] = target
->gdb_service
->core
[1];
1085 /* fake resume at next poll we play the target core[1], see poll*/
1086 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1089 cortex_a8_internal_restore(target
, current
, &address
, handle_breakpoints
, debug_execution
);
1091 target
->gdb_service
->core
[0] = -1;
1092 retval
= cortex_a8_restore_smp(target
, handle_breakpoints
);
1093 if (retval
!= ERROR_OK
)
1096 cortex_a8_internal_restart(target
);
1098 if (!debug_execution
) {
1099 target
->state
= TARGET_RUNNING
;
1100 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1101 LOG_DEBUG("target resumed at 0x%" PRIx32
, address
);
1103 target
->state
= TARGET_DEBUG_RUNNING
;
1104 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_RESUMED
);
1105 LOG_DEBUG("target debug resumed at 0x%" PRIx32
, address
);
1111 static int cortex_a8_debug_entry(struct target
*target
)
1114 uint32_t regfile
[16], cpsr
, dscr
;
1115 int retval
= ERROR_OK
;
1116 struct working_area
*regfile_working_area
= NULL
;
1117 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1118 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1119 struct arm
*arm
= &armv7a
->arm
;
1120 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
1123 LOG_DEBUG("dscr = 0x%08" PRIx32
, cortex_a8
->cpudbg_dscr
);
1125 /* REVISIT surely we should not re-read DSCR !! */
1126 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
1127 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1128 if (retval
!= ERROR_OK
)
1131 /* REVISIT see A8 TRM 12.11.4 steps 2..3 -- make sure that any
1132 * imprecise data aborts get discarded by issuing a Data
1133 * Synchronization Barrier: ARMV4_5_MCR(15, 0, 0, 7, 10, 4).
1136 /* Enable the ITR execution once we are in debug mode */
1137 dscr
|= DSCR_ITR_EN
;
1138 retval
= mem_ap_sel_write_atomic_u32(swjdp
, swjdp_debugap
,
1139 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
1140 if (retval
!= ERROR_OK
)
1143 /* Examine debug reason */
1144 arm_dpm_report_dscr(&armv7a
->dpm
, cortex_a8
->cpudbg_dscr
);
1146 /* save address of instruction that triggered the watchpoint? */
1147 if (target
->debug_reason
== DBG_REASON_WATCHPOINT
) {
1150 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
1151 armv7a
->debug_base
+ CPUDBG_WFAR
,
1153 if (retval
!= ERROR_OK
)
1155 arm_dpm_report_wfar(&armv7a
->dpm
, wfar
);
1158 /* REVISIT fast_reg_read is never set ... */
1160 /* Examine target state and mode */
1161 if (cortex_a8
->fast_reg_read
)
1162 target_alloc_working_area(target
, 64, ®file_working_area
);
1164 /* First load register acessible through core debug port*/
1165 if (!regfile_working_area
)
1166 retval
= arm_dpm_read_current_registers(&armv7a
->dpm
);
1168 retval
= cortex_a8_read_regs_through_mem(target
,
1169 regfile_working_area
->address
, regfile
);
1171 target_free_working_area(target
, regfile_working_area
);
1172 if (retval
!= ERROR_OK
)
1175 /* read Current PSR */
1176 retval
= cortex_a8_dap_read_coreregister_u32(target
, &cpsr
, 16);
1177 /* store current cpsr */
1178 if (retval
!= ERROR_OK
)
1181 LOG_DEBUG("cpsr: %8.8" PRIx32
, cpsr
);
1183 arm_set_cpsr(arm
, cpsr
);
1186 for (i
= 0; i
<= ARM_PC
; i
++) {
1187 reg
= arm_reg_current(arm
, i
);
1189 buf_set_u32(reg
->value
, 0, 32, regfile
[i
]);
1194 /* Fixup PC Resume Address */
1195 if (cpsr
& (1 << 5)) {
1196 /* T bit set for Thumb or ThumbEE state */
1197 regfile
[ARM_PC
] -= 4;
1200 regfile
[ARM_PC
] -= 8;
1204 buf_set_u32(reg
->value
, 0, 32, regfile
[ARM_PC
]);
1205 reg
->dirty
= reg
->valid
;
1209 /* TODO, Move this */
1210 uint32_t cp15_control_register
, cp15_cacr
, cp15_nacr
;
1211 cortex_a8_read_cp(target
, &cp15_control_register
, 15, 0, 1, 0, 0);
1212 LOG_DEBUG("cp15_control_register = 0x%08x", cp15_control_register
);
1214 cortex_a8_read_cp(target
, &cp15_cacr
, 15, 0, 1, 0, 2);
1215 LOG_DEBUG("cp15 Coprocessor Access Control Register = 0x%08x", cp15_cacr
);
1217 cortex_a8_read_cp(target
, &cp15_nacr
, 15, 0, 1, 1, 2);
1218 LOG_DEBUG("cp15 Nonsecure Access Control Register = 0x%08x", cp15_nacr
);
1221 /* Are we in an exception handler */
1222 /* armv4_5->exception_number = 0; */
1223 if (armv7a
->post_debug_entry
) {
1224 retval
= armv7a
->post_debug_entry(target
);
1225 if (retval
!= ERROR_OK
)
1232 static int cortex_a8_post_debug_entry(struct target
*target
)
1234 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1235 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
1238 /* MRC p15,0,<Rt>,c1,c0,0 ; Read CP15 System Control Register */
1239 retval
= armv7a
->arm
.mrc(target
, 15,
1240 0, 0, /* op1, op2 */
1241 1, 0, /* CRn, CRm */
1242 &cortex_a8
->cp15_control_reg
);
1243 if (retval
!= ERROR_OK
)
1245 LOG_DEBUG("cp15_control_reg: %8.8" PRIx32
, cortex_a8
->cp15_control_reg
);
1246 cortex_a8
->cp15_control_reg_curr
= cortex_a8
->cp15_control_reg
;
1248 if (armv7a
->armv7a_mmu
.armv7a_cache
.ctype
== -1)
1249 armv7a_identify_cache(target
);
1251 armv7a
->armv7a_mmu
.mmu_enabled
=
1252 (cortex_a8
->cp15_control_reg
& 0x1U
) ? 1 : 0;
1253 armv7a
->armv7a_mmu
.armv7a_cache
.d_u_cache_enabled
=
1254 (cortex_a8
->cp15_control_reg
& 0x4U
) ? 1 : 0;
1255 armv7a
->armv7a_mmu
.armv7a_cache
.i_cache_enabled
=
1256 (cortex_a8
->cp15_control_reg
& 0x1000U
) ? 1 : 0;
1257 cortex_a8
->curr_mode
= armv7a
->arm
.core_mode
;
1262 static int cortex_a8_step(struct target
*target
, int current
, uint32_t address
,
1263 int handle_breakpoints
)
1265 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1266 struct arm
*arm
= &armv7a
->arm
;
1267 struct breakpoint
*breakpoint
= NULL
;
1268 struct breakpoint stepbreakpoint
;
1272 if (target
->state
!= TARGET_HALTED
) {
1273 LOG_WARNING("target not halted");
1274 return ERROR_TARGET_NOT_HALTED
;
1277 /* current = 1: continue on current pc, otherwise continue at <address> */
1280 buf_set_u32(r
->value
, 0, 32, address
);
1282 address
= buf_get_u32(r
->value
, 0, 32);
1284 /* The front-end may request us not to handle breakpoints.
1285 * But since Cortex-A8 uses breakpoint for single step,
1286 * we MUST handle breakpoints.
1288 handle_breakpoints
= 1;
1289 if (handle_breakpoints
) {
1290 breakpoint
= breakpoint_find(target
, address
);
1292 cortex_a8_unset_breakpoint(target
, breakpoint
);
1295 /* Setup single step breakpoint */
1296 stepbreakpoint
.address
= address
;
1297 stepbreakpoint
.length
= (arm
->core_state
== ARM_STATE_THUMB
)
1299 stepbreakpoint
.type
= BKPT_HARD
;
1300 stepbreakpoint
.set
= 0;
1302 /* Break on IVA mismatch */
1303 cortex_a8_set_breakpoint(target
, &stepbreakpoint
, 0x04);
1305 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
1307 retval
= cortex_a8_resume(target
, 1, address
, 0, 0);
1308 if (retval
!= ERROR_OK
)
1311 long long then
= timeval_ms();
1312 while (target
->state
!= TARGET_HALTED
) {
1313 retval
= cortex_a8_poll(target
);
1314 if (retval
!= ERROR_OK
)
1316 if (timeval_ms() > then
+ 1000) {
1317 LOG_ERROR("timeout waiting for target halt");
1322 cortex_a8_unset_breakpoint(target
, &stepbreakpoint
);
1324 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
1327 cortex_a8_set_breakpoint(target
, breakpoint
, 0);
1329 if (target
->state
!= TARGET_HALTED
)
1330 LOG_DEBUG("target stepped");
1335 static int cortex_a8_restore_context(struct target
*target
, bool bpwp
)
1337 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1341 if (armv7a
->pre_restore_context
)
1342 armv7a
->pre_restore_context(target
);
1344 return arm_dpm_write_dirty_registers(&armv7a
->dpm
, bpwp
);
1348 * Cortex-A8 Breakpoint and watchpoint functions
1351 /* Setup hardware Breakpoint Register Pair */
1352 static int cortex_a8_set_breakpoint(struct target
*target
,
1353 struct breakpoint
*breakpoint
, uint8_t matchmode
)
1358 uint8_t byte_addr_select
= 0x0F;
1359 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1360 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
1361 struct cortex_a8_brp
*brp_list
= cortex_a8
->brp_list
;
1363 if (breakpoint
->set
) {
1364 LOG_WARNING("breakpoint already set");
1368 if (breakpoint
->type
== BKPT_HARD
) {
1369 while (brp_list
[brp_i
].used
&& (brp_i
< cortex_a8
->brp_num
))
1371 if (brp_i
>= cortex_a8
->brp_num
) {
1372 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1373 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1375 breakpoint
->set
= brp_i
+ 1;
1376 if (breakpoint
->length
== 2)
1377 byte_addr_select
= (3 << (breakpoint
->address
& 0x02));
1378 control
= ((matchmode
& 0x7) << 20)
1379 | (byte_addr_select
<< 5)
1381 brp_list
[brp_i
].used
= 1;
1382 brp_list
[brp_i
].value
= (breakpoint
->address
& 0xFFFFFFFC);
1383 brp_list
[brp_i
].control
= control
;
1384 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1385 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1386 brp_list
[brp_i
].value
);
1387 if (retval
!= ERROR_OK
)
1389 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1390 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1391 brp_list
[brp_i
].control
);
1392 if (retval
!= ERROR_OK
)
1394 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_i
,
1395 brp_list
[brp_i
].control
,
1396 brp_list
[brp_i
].value
);
1397 } else if (breakpoint
->type
== BKPT_SOFT
) {
1399 if (breakpoint
->length
== 2)
1400 buf_set_u32(code
, 0, 32, ARMV5_T_BKPT(0x11));
1402 buf_set_u32(code
, 0, 32, ARMV5_BKPT(0x11));
1403 retval
= target_read_memory(target
,
1404 breakpoint
->address
& 0xFFFFFFFE,
1405 breakpoint
->length
, 1,
1406 breakpoint
->orig_instr
);
1407 if (retval
!= ERROR_OK
)
1409 retval
= target_write_memory(target
,
1410 breakpoint
->address
& 0xFFFFFFFE,
1411 breakpoint
->length
, 1, code
);
1412 if (retval
!= ERROR_OK
)
1414 breakpoint
->set
= 0x11; /* Any nice value but 0 */
1420 static int cortex_a8_set_context_breakpoint(struct target
*target
,
1421 struct breakpoint
*breakpoint
, uint8_t matchmode
)
1423 int retval
= ERROR_FAIL
;
1426 uint8_t byte_addr_select
= 0x0F;
1427 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1428 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
1429 struct cortex_a8_brp
*brp_list
= cortex_a8
->brp_list
;
1431 if (breakpoint
->set
) {
1432 LOG_WARNING("breakpoint already set");
1435 /*check available context BRPs*/
1436 while ((brp_list
[brp_i
].used
||
1437 (brp_list
[brp_i
].type
!= BRP_CONTEXT
)) && (brp_i
< cortex_a8
->brp_num
))
1440 if (brp_i
>= cortex_a8
->brp_num
) {
1441 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1445 breakpoint
->set
= brp_i
+ 1;
1446 control
= ((matchmode
& 0x7) << 20)
1447 | (byte_addr_select
<< 5)
1449 brp_list
[brp_i
].used
= 1;
1450 brp_list
[brp_i
].value
= (breakpoint
->asid
);
1451 brp_list
[brp_i
].control
= control
;
1452 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1453 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1454 brp_list
[brp_i
].value
);
1455 if (retval
!= ERROR_OK
)
1457 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1458 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1459 brp_list
[brp_i
].control
);
1460 if (retval
!= ERROR_OK
)
1462 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_i
,
1463 brp_list
[brp_i
].control
,
1464 brp_list
[brp_i
].value
);
1469 static int cortex_a8_set_hybrid_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1471 int retval
= ERROR_FAIL
;
1472 int brp_1
= 0; /* holds the contextID pair */
1473 int brp_2
= 0; /* holds the IVA pair */
1474 uint32_t control_CTX
, control_IVA
;
1475 uint8_t CTX_byte_addr_select
= 0x0F;
1476 uint8_t IVA_byte_addr_select
= 0x0F;
1477 uint8_t CTX_machmode
= 0x03;
1478 uint8_t IVA_machmode
= 0x01;
1479 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1480 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
1481 struct cortex_a8_brp
*brp_list
= cortex_a8
->brp_list
;
1483 if (breakpoint
->set
) {
1484 LOG_WARNING("breakpoint already set");
1487 /*check available context BRPs*/
1488 while ((brp_list
[brp_1
].used
||
1489 (brp_list
[brp_1
].type
!= BRP_CONTEXT
)) && (brp_1
< cortex_a8
->brp_num
))
1492 printf("brp(CTX) found num: %d\n", brp_1
);
1493 if (brp_1
>= cortex_a8
->brp_num
) {
1494 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1498 while ((brp_list
[brp_2
].used
||
1499 (brp_list
[brp_2
].type
!= BRP_NORMAL
)) && (brp_2
< cortex_a8
->brp_num
))
1502 printf("brp(IVA) found num: %d\n", brp_2
);
1503 if (brp_2
>= cortex_a8
->brp_num
) {
1504 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1508 breakpoint
->set
= brp_1
+ 1;
1509 breakpoint
->linked_BRP
= brp_2
;
1510 control_CTX
= ((CTX_machmode
& 0x7) << 20)
1513 | (CTX_byte_addr_select
<< 5)
1515 brp_list
[brp_1
].used
= 1;
1516 brp_list
[brp_1
].value
= (breakpoint
->asid
);
1517 brp_list
[brp_1
].control
= control_CTX
;
1518 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1519 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_1
].BRPn
,
1520 brp_list
[brp_1
].value
);
1521 if (retval
!= ERROR_OK
)
1523 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1524 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_1
].BRPn
,
1525 brp_list
[brp_1
].control
);
1526 if (retval
!= ERROR_OK
)
1529 control_IVA
= ((IVA_machmode
& 0x7) << 20)
1531 | (IVA_byte_addr_select
<< 5)
1533 brp_list
[brp_2
].used
= 1;
1534 brp_list
[brp_2
].value
= (breakpoint
->address
& 0xFFFFFFFC);
1535 brp_list
[brp_2
].control
= control_IVA
;
1536 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1537 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_2
].BRPn
,
1538 brp_list
[brp_2
].value
);
1539 if (retval
!= ERROR_OK
)
1541 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1542 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_2
].BRPn
,
1543 brp_list
[brp_2
].control
);
1544 if (retval
!= ERROR_OK
)
1550 static int cortex_a8_unset_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1553 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1554 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
1555 struct cortex_a8_brp
*brp_list
= cortex_a8
->brp_list
;
1557 if (!breakpoint
->set
) {
1558 LOG_WARNING("breakpoint not set");
1562 if (breakpoint
->type
== BKPT_HARD
) {
1563 if ((breakpoint
->address
!= 0) && (breakpoint
->asid
!= 0)) {
1564 int brp_i
= breakpoint
->set
- 1;
1565 int brp_j
= breakpoint
->linked_BRP
;
1566 if ((brp_i
< 0) || (brp_i
>= cortex_a8
->brp_num
)) {
1567 LOG_DEBUG("Invalid BRP number in breakpoint");
1570 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_i
,
1571 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1572 brp_list
[brp_i
].used
= 0;
1573 brp_list
[brp_i
].value
= 0;
1574 brp_list
[brp_i
].control
= 0;
1575 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1576 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1577 brp_list
[brp_i
].control
);
1578 if (retval
!= ERROR_OK
)
1580 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1581 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1582 brp_list
[brp_i
].value
);
1583 if (retval
!= ERROR_OK
)
1585 if ((brp_j
< 0) || (brp_j
>= cortex_a8
->brp_num
)) {
1586 LOG_DEBUG("Invalid BRP number in breakpoint");
1589 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_j
,
1590 brp_list
[brp_j
].control
, brp_list
[brp_j
].value
);
1591 brp_list
[brp_j
].used
= 0;
1592 brp_list
[brp_j
].value
= 0;
1593 brp_list
[brp_j
].control
= 0;
1594 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1595 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_j
].BRPn
,
1596 brp_list
[brp_j
].control
);
1597 if (retval
!= ERROR_OK
)
1599 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1600 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_j
].BRPn
,
1601 brp_list
[brp_j
].value
);
1602 if (retval
!= ERROR_OK
)
1604 breakpoint
->linked_BRP
= 0;
1605 breakpoint
->set
= 0;
1609 int brp_i
= breakpoint
->set
- 1;
1610 if ((brp_i
< 0) || (brp_i
>= cortex_a8
->brp_num
)) {
1611 LOG_DEBUG("Invalid BRP number in breakpoint");
1614 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_i
,
1615 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1616 brp_list
[brp_i
].used
= 0;
1617 brp_list
[brp_i
].value
= 0;
1618 brp_list
[brp_i
].control
= 0;
1619 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1620 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1621 brp_list
[brp_i
].control
);
1622 if (retval
!= ERROR_OK
)
1624 retval
= cortex_a8_dap_write_memap_register_u32(target
, armv7a
->debug_base
1625 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1626 brp_list
[brp_i
].value
);
1627 if (retval
!= ERROR_OK
)
1629 breakpoint
->set
= 0;
1633 /* restore original instruction (kept in target endianness) */
1634 if (breakpoint
->length
== 4) {
1635 retval
= target_write_memory(target
,
1636 breakpoint
->address
& 0xFFFFFFFE,
1637 4, 1, breakpoint
->orig_instr
);
1638 if (retval
!= ERROR_OK
)
1641 retval
= target_write_memory(target
,
1642 breakpoint
->address
& 0xFFFFFFFE,
1643 2, 1, breakpoint
->orig_instr
);
1644 if (retval
!= ERROR_OK
)
1648 breakpoint
->set
= 0;
1653 static int cortex_a8_add_breakpoint(struct target
*target
,
1654 struct breakpoint
*breakpoint
)
1656 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1658 if ((breakpoint
->type
== BKPT_HARD
) && (cortex_a8
->brp_num_available
< 1)) {
1659 LOG_INFO("no hardware breakpoint available");
1660 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1663 if (breakpoint
->type
== BKPT_HARD
)
1664 cortex_a8
->brp_num_available
--;
1666 return cortex_a8_set_breakpoint(target
, breakpoint
, 0x00); /* Exact match */
1669 static int cortex_a8_add_context_breakpoint(struct target
*target
,
1670 struct breakpoint
*breakpoint
)
1672 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1674 if ((breakpoint
->type
== BKPT_HARD
) && (cortex_a8
->brp_num_available
< 1)) {
1675 LOG_INFO("no hardware breakpoint available");
1676 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1679 if (breakpoint
->type
== BKPT_HARD
)
1680 cortex_a8
->brp_num_available
--;
1682 return cortex_a8_set_context_breakpoint(target
, breakpoint
, 0x02); /* asid match */
1685 static int cortex_a8_add_hybrid_breakpoint(struct target
*target
,
1686 struct breakpoint
*breakpoint
)
1688 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1690 if ((breakpoint
->type
== BKPT_HARD
) && (cortex_a8
->brp_num_available
< 1)) {
1691 LOG_INFO("no hardware breakpoint available");
1692 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1695 if (breakpoint
->type
== BKPT_HARD
)
1696 cortex_a8
->brp_num_available
--;
1698 return cortex_a8_set_hybrid_breakpoint(target
, breakpoint
); /* ??? */
1702 static int cortex_a8_remove_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1704 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
1707 /* It is perfectly possible to remove breakpoints while the target is running */
1708 if (target
->state
!= TARGET_HALTED
) {
1709 LOG_WARNING("target not halted");
1710 return ERROR_TARGET_NOT_HALTED
;
1714 if (breakpoint
->set
) {
1715 cortex_a8_unset_breakpoint(target
, breakpoint
);
1716 if (breakpoint
->type
== BKPT_HARD
)
1717 cortex_a8
->brp_num_available
++;
1725 * Cortex-A8 Reset functions
1728 static int cortex_a8_assert_reset(struct target
*target
)
1730 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1734 /* FIXME when halt is requested, make it work somehow... */
1736 /* Issue some kind of warm reset. */
1737 if (target_has_event_action(target
, TARGET_EVENT_RESET_ASSERT
))
1738 target_handle_event(target
, TARGET_EVENT_RESET_ASSERT
);
1739 else if (jtag_get_reset_config() & RESET_HAS_SRST
) {
1740 /* REVISIT handle "pulls" cases, if there's
1741 * hardware that needs them to work.
1743 jtag_add_reset(0, 1);
1745 LOG_ERROR("%s: how to reset?", target_name(target
));
1749 /* registers are now invalid */
1750 register_cache_invalidate(armv7a
->arm
.core_cache
);
1752 target
->state
= TARGET_RESET
;
1757 static int cortex_a8_deassert_reset(struct target
*target
)
1763 /* be certain SRST is off */
1764 jtag_add_reset(0, 0);
1766 retval
= cortex_a8_poll(target
);
1767 if (retval
!= ERROR_OK
)
1770 if (target
->reset_halt
) {
1771 if (target
->state
!= TARGET_HALTED
) {
1772 LOG_WARNING("%s: ran after reset and before halt ...",
1773 target_name(target
));
1774 retval
= target_halt(target
);
1775 if (retval
!= ERROR_OK
)
1783 static int cortex_a8_write_apb_ab_memory(struct target
*target
,
1784 uint32_t address
, uint32_t size
,
1785 uint32_t count
, const uint8_t *buffer
)
1787 /* write memory through APB-AP */
1789 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
1790 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1791 struct arm
*arm
= &armv7a
->arm
;
1792 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
1793 int total_bytes
= count
* size
;
1795 int start_byte
= address
& 0x3;
1796 int end_byte
= (address
+ total_bytes
) & 0x3;
1799 uint8_t *tmp_buff
= NULL
;
1801 if (target
->state
!= TARGET_HALTED
) {
1802 LOG_WARNING("target not halted");
1803 return ERROR_TARGET_NOT_HALTED
;
1806 total_u32
= DIV_ROUND_UP((address
& 3) + total_bytes
, 4);
1808 /* Mark register R0 as dirty, as it will be used
1809 * for transferring the data.
1810 * It will be restored automatically when exiting
1813 reg
= arm_reg_current(arm
, 0);
1816 /* clear any abort */
1817 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
, armv7a
->debug_base
+ CPUDBG_DRCR
, 1<<2);
1818 if (retval
!= ERROR_OK
)
1821 /* This algorithm comes from either :
1822 * Cortex-A8 TRM Example 12-25
1823 * Cortex-R4 TRM Example 11-26
1824 * (slight differences)
1827 /* The algorithm only copies 32 bit words, so the buffer
1828 * should be expanded to include the words at either end.
1829 * The first and last words will be read first to avoid
1830 * corruption if needed.
1832 tmp_buff
= (uint8_t *) malloc(total_u32
<< 2);
1835 if ((start_byte
!= 0) && (total_u32
> 1)) {
1836 /* First bytes not aligned - read the 32 bit word to avoid corrupting
1837 * the other bytes in the word.
1839 retval
= cortex_a8_read_apb_ab_memory(target
, (address
& ~0x3), 4, 1, tmp_buff
);
1840 if (retval
!= ERROR_OK
)
1841 goto error_free_buff_w
;
1844 /* If end of write is not aligned, or the write is less than 4 bytes */
1845 if ((end_byte
!= 0) ||
1846 ((total_u32
== 1) && (total_bytes
!= 4))) {
1848 /* Read the last word to avoid corruption during 32 bit write */
1849 int mem_offset
= (total_u32
-1) << 4;
1850 retval
= cortex_a8_read_apb_ab_memory(target
, (address
& ~0x3) + mem_offset
, 4, 1, &tmp_buff
[mem_offset
]);
1851 if (retval
!= ERROR_OK
)
1852 goto error_free_buff_w
;
1855 /* Copy the write buffer over the top of the temporary buffer */
1856 memcpy(&tmp_buff
[start_byte
], buffer
, total_bytes
);
1858 /* We now have a 32 bit aligned buffer that can be written */
1861 retval
= mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
1862 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1863 if (retval
!= ERROR_OK
)
1864 goto error_free_buff_w
;
1866 /* Set DTR mode to Fast (2) */
1867 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_FAST_MODE
;
1868 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1869 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
1870 if (retval
!= ERROR_OK
)
1871 goto error_free_buff_w
;
1873 /* Copy the destination address into R0 */
1874 /* - pend an instruction MRC p14, 0, R0, c5, c0 */
1875 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1876 armv7a
->debug_base
+ CPUDBG_ITR
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0));
1877 if (retval
!= ERROR_OK
)
1878 goto error_unset_dtr_w
;
1879 /* Write address into DTRRX, which triggers previous instruction */
1880 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1881 armv7a
->debug_base
+ CPUDBG_DTRRX
, address
& (~0x3));
1882 if (retval
!= ERROR_OK
)
1883 goto error_unset_dtr_w
;
1885 /* Write the data transfer instruction into the ITR
1886 * (STC p14, c5, [R0], 4)
1888 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1889 armv7a
->debug_base
+ CPUDBG_ITR
, ARMV4_5_STC(0, 1, 0, 1, 14, 5, 0, 4));
1890 if (retval
!= ERROR_OK
)
1891 goto error_unset_dtr_w
;
1894 retval
= mem_ap_sel_write_buf_u32_noincr(swjdp
, armv7a
->debug_ap
,
1895 tmp_buff
, (total_u32
)<<2, armv7a
->debug_base
+ CPUDBG_DTRRX
);
1896 if (retval
!= ERROR_OK
)
1897 goto error_unset_dtr_w
;
1900 /* Switch DTR mode back to non-blocking (0) */
1901 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_NON_BLOCKING
;
1902 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1903 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
1904 if (retval
!= ERROR_OK
)
1905 goto error_unset_dtr_w
;
1907 /* Check for sticky abort flags in the DSCR */
1908 retval
= mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
1909 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1910 if (retval
!= ERROR_OK
)
1911 goto error_free_buff_w
;
1912 if (dscr
& (DSCR_STICKY_ABORT_PRECISE
| DSCR_STICKY_ABORT_IMPRECISE
)) {
1913 /* Abort occurred - clear it and exit */
1914 LOG_ERROR("abort occurred - dscr = 0x%08x", dscr
);
1915 mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1916 armv7a
->debug_base
+ CPUDBG_DRCR
, 1<<2);
1917 goto error_free_buff_w
;
1925 /* Unset DTR mode */
1926 mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
1927 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1928 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_NON_BLOCKING
;
1929 mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1930 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
1937 static int cortex_a8_read_apb_ab_memory(struct target
*target
,
1938 uint32_t address
, uint32_t size
,
1939 uint32_t count
, uint8_t *buffer
)
1941 /* read memory through APB-AP */
1943 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
1944 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
1945 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
1946 struct arm
*arm
= &armv7a
->arm
;
1947 int total_bytes
= count
* size
;
1949 int start_byte
= address
& 0x3;
1952 char *tmp_buff
= NULL
;
1954 if (target
->state
!= TARGET_HALTED
) {
1955 LOG_WARNING("target not halted");
1956 return ERROR_TARGET_NOT_HALTED
;
1959 total_u32
= DIV_ROUND_UP((address
& 3) + total_bytes
, 4);
1961 /* Mark register R0 as dirty, as it will be used
1962 * for transferring the data.
1963 * It will be restored automatically when exiting
1966 reg
= arm_reg_current(arm
, 0);
1969 /* clear any abort */
1971 mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
, armv7a
->debug_base
+ CPUDBG_DRCR
, 1<<2);
1972 if (retval
!= ERROR_OK
)
1976 retval
= mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
1977 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
1979 /* This algorithm comes from either :
1980 * Cortex-A8 TRM Example 12-24
1981 * Cortex-R4 TRM Example 11-25
1982 * (slight differences)
1985 /* Set DTR access mode to stall mode b01 */
1986 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_STALL_MODE
;
1987 retval
+= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1988 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
1990 /* Write R0 with value 'address' using write procedure for stall mode */
1991 /* - Write the address for read access into DTRRX */
1992 retval
+= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
1993 armv7a
->debug_base
+ CPUDBG_DTRRX
, address
& ~0x3);
1994 /* - Copy value from DTRRX to R0 using instruction mrc p14, 0, r0, c5, c0 */
1995 cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0), &dscr
);
1998 /* Write the data transfer instruction (ldc p14, c5, [r0],4)
1999 * and the DTR mode setting to fast mode
2000 * in one combined write (since they are adjacent registers)
2002 buff32
[0] = ARMV4_5_LDC(0, 1, 0, 1, 14, 5, 0, 4);
2003 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_FAST_MODE
;
2005 /* group the 2 access CPUDBG_ITR 0x84 and CPUDBG_DSCR 0x88 */
2006 retval
+= mem_ap_sel_write_buf_u32(swjdp
, armv7a
->debug_ap
, (uint8_t *)buff32
, 8,
2007 armv7a
->debug_base
+ CPUDBG_ITR
);
2008 if (retval
!= ERROR_OK
)
2009 goto error_unset_dtr_r
;
2012 /* Due to offset word alignment, the buffer may not have space
2013 * to read the full first and last int32 words,
2014 * hence, malloc space to read into, then copy and align into the buffer.
2016 tmp_buff
= (char *) malloc(total_u32
<<2);
2018 /* The last word needs to be handled separately - read all other words in one go.
2020 if (total_u32
> 1) {
2021 /* Read the data - Each read of the DTRTX register causes the instruction to be reissued
2022 * Abort flags are sticky, so can be read at end of transactions
2024 * This data is read in aligned to 32 bit boundary, hence may need shifting later.
2026 retval
= mem_ap_sel_read_buf_u32_noincr(swjdp
, armv7a
->debug_ap
, (uint8_t *)tmp_buff
, (total_u32
-1)<<2,
2027 armv7a
->debug_base
+ CPUDBG_DTRTX
);
2028 if (retval
!= ERROR_OK
)
2029 goto error_unset_dtr_r
;
2032 /* set DTR access mode back to non blocking b00 */
2033 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_NON_BLOCKING
;
2034 retval
= mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
2035 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
2036 if (retval
!= ERROR_OK
)
2037 goto error_free_buff_r
;
2039 /* Wait for the final read instruction to finish */
2041 retval
= mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
2042 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
2043 if (retval
!= ERROR_OK
)
2044 goto error_free_buff_r
;
2045 } while ((dscr
& DSCR_INSTR_COMP
) == 0);
2048 /* Check for sticky abort flags in the DSCR */
2049 retval
= mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
2050 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
2051 if (retval
!= ERROR_OK
)
2052 goto error_free_buff_r
;
2053 if (dscr
& (DSCR_STICKY_ABORT_PRECISE
| DSCR_STICKY_ABORT_IMPRECISE
)) {
2054 /* Abort occurred - clear it and exit */
2055 LOG_ERROR("abort occurred - dscr = 0x%08x", dscr
);
2056 mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
2057 armv7a
->debug_base
+ CPUDBG_DRCR
, 1<<2);
2058 goto error_free_buff_r
;
2061 /* Read the last word */
2062 retval
= mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
2063 armv7a
->debug_base
+ CPUDBG_DTRTX
, (uint32_t *)&tmp_buff
[(total_u32
-1)<<2]);
2064 if (retval
!= ERROR_OK
)
2065 goto error_free_buff_r
;
2067 /* Copy and align the data into the output buffer */
2068 memcpy(buffer
, &tmp_buff
[start_byte
], total_bytes
);
2077 /* Unset DTR mode */
2078 mem_ap_sel_read_atomic_u32(swjdp
, armv7a
->debug_ap
,
2079 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
2080 dscr
= (dscr
& ~DSCR_EXT_DCC_MASK
) | DSCR_EXT_DCC_NON_BLOCKING
;
2081 mem_ap_sel_write_atomic_u32(swjdp
, armv7a
->debug_ap
,
2082 armv7a
->debug_base
+ CPUDBG_DSCR
, dscr
);
2091 * Cortex-A8 Memory access
2093 * This is same Cortex M3 but we must also use the correct
2094 * ap number for every access.
2097 static int cortex_a8_read_phys_memory(struct target
*target
,
2098 uint32_t address
, uint32_t size
,
2099 uint32_t count
, uint8_t *buffer
)
2101 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2102 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2103 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2104 uint8_t apsel
= swjdp
->apsel
;
2105 LOG_DEBUG("Reading memory at real address 0x%x; size %d; count %d",
2106 address
, size
, count
);
2108 if (count
&& buffer
) {
2110 if (apsel
== swjdp_memoryap
) {
2112 /* read memory through AHB-AP */
2116 retval
= mem_ap_sel_read_buf_u32(swjdp
, swjdp_memoryap
,
2117 buffer
, 4 * count
, address
);
2120 retval
= mem_ap_sel_read_buf_u16(swjdp
, swjdp_memoryap
,
2121 buffer
, 2 * count
, address
);
2124 retval
= mem_ap_sel_read_buf_u8(swjdp
, swjdp_memoryap
,
2125 buffer
, count
, address
);
2130 /* read memory through APB-AP
2132 retval
= cortex_a8_mmu_modify(target
, 0);
2133 if (retval
!= ERROR_OK
)
2135 retval
= cortex_a8_read_apb_ab_memory(target
, address
, size
, count
, buffer
);
2141 static int cortex_a8_read_memory(struct target
*target
, uint32_t address
,
2142 uint32_t size
, uint32_t count
, uint8_t *buffer
)
2145 uint32_t virt
, phys
;
2147 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2148 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2149 uint8_t apsel
= swjdp
->apsel
;
2151 /* cortex_a8 handles unaligned memory access */
2152 LOG_DEBUG("Reading memory at address 0x%x; size %d; count %d", address
,
2154 if (apsel
== swjdp_memoryap
) {
2155 retval
= cortex_a8_mmu(target
, &enabled
);
2156 if (retval
!= ERROR_OK
)
2162 retval
= cortex_a8_virt2phys(target
, virt
, &phys
);
2163 if (retval
!= ERROR_OK
)
2166 LOG_DEBUG("Reading at virtual address. Translating v:0x%x to r:0x%x",
2170 retval
= cortex_a8_read_phys_memory(target
, address
, size
, count
, buffer
);
2172 retval
= cortex_a8_check_address(target
, address
);
2173 if (retval
!= ERROR_OK
)
2176 retval
= cortex_a8_mmu_modify(target
, 1);
2177 if (retval
!= ERROR_OK
)
2179 retval
= cortex_a8_read_apb_ab_memory(target
, address
, size
, count
, buffer
);
2184 static int cortex_a8_write_phys_memory(struct target
*target
,
2185 uint32_t address
, uint32_t size
,
2186 uint32_t count
, const uint8_t *buffer
)
2188 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2189 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2190 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2191 uint8_t apsel
= swjdp
->apsel
;
2193 LOG_DEBUG("Writing memory to real address 0x%x; size %d; count %d", address
,
2196 if (count
&& buffer
) {
2198 if (apsel
== swjdp_memoryap
) {
2200 /* write memory through AHB-AP */
2204 retval
= mem_ap_sel_write_buf_u32(swjdp
, swjdp_memoryap
,
2205 buffer
, 4 * count
, address
);
2208 retval
= mem_ap_sel_write_buf_u16(swjdp
, swjdp_memoryap
,
2209 buffer
, 2 * count
, address
);
2212 retval
= mem_ap_sel_write_buf_u8(swjdp
, swjdp_memoryap
,
2213 buffer
, count
, address
);
2219 /* write memory through APB-AP */
2220 retval
= cortex_a8_mmu_modify(target
, 0);
2221 if (retval
!= ERROR_OK
)
2223 return cortex_a8_write_apb_ab_memory(target
, address
, size
, count
, buffer
);
2228 /* REVISIT this op is generic ARMv7-A/R stuff */
2229 if (retval
== ERROR_OK
&& target
->state
== TARGET_HALTED
) {
2230 struct arm_dpm
*dpm
= armv7a
->arm
.dpm
;
2232 retval
= dpm
->prepare(dpm
);
2233 if (retval
!= ERROR_OK
)
2236 /* The Cache handling will NOT work with MMU active, the
2237 * wrong addresses will be invalidated!
2239 * For both ICache and DCache, walk all cache lines in the
2240 * address range. Cortex-A8 has fixed 64 byte line length.
2242 * REVISIT per ARMv7, these may trigger watchpoints ...
2245 /* invalidate I-Cache */
2246 if (armv7a
->armv7a_mmu
.armv7a_cache
.i_cache_enabled
) {
2247 /* ICIMVAU - Invalidate Cache single entry
2249 * MCR p15, 0, r0, c7, c5, 1
2251 for (uint32_t cacheline
= address
;
2252 cacheline
< address
+ size
* count
;
2254 retval
= dpm
->instr_write_data_r0(dpm
,
2255 ARMV4_5_MCR(15, 0, 0, 7, 5, 1),
2257 if (retval
!= ERROR_OK
)
2262 /* invalidate D-Cache */
2263 if (armv7a
->armv7a_mmu
.armv7a_cache
.d_u_cache_enabled
) {
2264 /* DCIMVAC - Invalidate data Cache line
2266 * MCR p15, 0, r0, c7, c6, 1
2268 for (uint32_t cacheline
= address
;
2269 cacheline
< address
+ size
* count
;
2271 retval
= dpm
->instr_write_data_r0(dpm
,
2272 ARMV4_5_MCR(15, 0, 0, 7, 6, 1),
2274 if (retval
!= ERROR_OK
)
2279 /* (void) */ dpm
->finish(dpm
);
2285 static int cortex_a8_write_memory(struct target
*target
, uint32_t address
,
2286 uint32_t size
, uint32_t count
, const uint8_t *buffer
)
2289 uint32_t virt
, phys
;
2291 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2292 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2293 uint8_t apsel
= swjdp
->apsel
;
2294 /* cortex_a8 handles unaligned memory access */
2295 LOG_DEBUG("Reading memory at address 0x%x; size %d; count %d", address
,
2297 if (apsel
== swjdp_memoryap
) {
2299 LOG_DEBUG("Writing memory to address 0x%x; size %d; count %d", address
, size
,
2301 retval
= cortex_a8_mmu(target
, &enabled
);
2302 if (retval
!= ERROR_OK
)
2307 retval
= cortex_a8_virt2phys(target
, virt
, &phys
);
2308 if (retval
!= ERROR_OK
)
2310 LOG_DEBUG("Writing to virtual address. Translating v:0x%x to r:0x%x",
2316 retval
= cortex_a8_write_phys_memory(target
, address
, size
,
2319 retval
= cortex_a8_check_address(target
, address
);
2320 if (retval
!= ERROR_OK
)
2323 retval
= cortex_a8_mmu_modify(target
, 1);
2324 if (retval
!= ERROR_OK
)
2326 retval
= cortex_a8_write_apb_ab_memory(target
, address
, size
, count
, buffer
);
2331 static int cortex_a8_bulk_write_memory(struct target
*target
, uint32_t address
,
2332 uint32_t count
, const uint8_t *buffer
)
2334 return cortex_a8_write_memory(target
, address
, 4, count
, buffer
);
2337 static int cortex_a8_handle_target_request(void *priv
)
2339 struct target
*target
= priv
;
2340 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2341 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2344 if (!target_was_examined(target
))
2346 if (!target
->dbg_msg_enabled
)
2349 if (target
->state
== TARGET_RUNNING
) {
2352 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2353 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
2355 /* check if we have data */
2356 while ((dscr
& DSCR_DTR_TX_FULL
) && (retval
== ERROR_OK
)) {
2357 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2358 armv7a
->debug_base
+ CPUDBG_DTRTX
, &request
);
2359 if (retval
== ERROR_OK
) {
2360 target_request(target
, request
);
2361 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2362 armv7a
->debug_base
+ CPUDBG_DSCR
, &dscr
);
2371 * Cortex-A8 target information and configuration
2374 static int cortex_a8_examine_first(struct target
*target
)
2376 struct cortex_a8_common
*cortex_a8
= target_to_cortex_a8(target
);
2377 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
2378 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2380 int retval
= ERROR_OK
;
2381 uint32_t didr
, ctypr
, ttypr
, cpuid
;
2383 /* We do one extra read to ensure DAP is configured,
2384 * we call ahbap_debugport_init(swjdp) instead
2386 retval
= ahbap_debugport_init(swjdp
);
2387 if (retval
!= ERROR_OK
)
2390 if (!target
->dbgbase_set
) {
2392 /* Get ROM Table base */
2394 retval
= dap_get_debugbase(swjdp
, 1, &dbgbase
, &apid
);
2395 if (retval
!= ERROR_OK
)
2397 /* Lookup 0x15 -- Processor DAP */
2398 retval
= dap_lookup_cs_component(swjdp
, 1, dbgbase
, 0x15,
2399 &armv7a
->debug_base
);
2400 if (retval
!= ERROR_OK
)
2403 armv7a
->debug_base
= target
->dbgbase
;
2405 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2406 armv7a
->debug_base
+ CPUDBG_CPUID
, &cpuid
);
2407 if (retval
!= ERROR_OK
)
2410 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2411 armv7a
->debug_base
+ CPUDBG_CPUID
, &cpuid
);
2412 if (retval
!= ERROR_OK
) {
2413 LOG_DEBUG("Examine %s failed", "CPUID");
2417 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2418 armv7a
->debug_base
+ CPUDBG_CTYPR
, &ctypr
);
2419 if (retval
!= ERROR_OK
) {
2420 LOG_DEBUG("Examine %s failed", "CTYPR");
2424 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2425 armv7a
->debug_base
+ CPUDBG_TTYPR
, &ttypr
);
2426 if (retval
!= ERROR_OK
) {
2427 LOG_DEBUG("Examine %s failed", "TTYPR");
2431 retval
= mem_ap_sel_read_atomic_u32(swjdp
, swjdp_debugap
,
2432 armv7a
->debug_base
+ CPUDBG_DIDR
, &didr
);
2433 if (retval
!= ERROR_OK
) {
2434 LOG_DEBUG("Examine %s failed", "DIDR");
2438 LOG_DEBUG("cpuid = 0x%08" PRIx32
, cpuid
);
2439 LOG_DEBUG("ctypr = 0x%08" PRIx32
, ctypr
);
2440 LOG_DEBUG("ttypr = 0x%08" PRIx32
, ttypr
);
2441 LOG_DEBUG("didr = 0x%08" PRIx32
, didr
);
2443 armv7a
->arm
.core_type
= ARM_MODE_MON
;
2444 retval
= cortex_a8_dpm_setup(cortex_a8
, didr
);
2445 if (retval
!= ERROR_OK
)
2448 /* Setup Breakpoint Register Pairs */
2449 cortex_a8
->brp_num
= ((didr
>> 24) & 0x0F) + 1;
2450 cortex_a8
->brp_num_context
= ((didr
>> 20) & 0x0F) + 1;
2451 cortex_a8
->brp_num_available
= cortex_a8
->brp_num
;
2452 cortex_a8
->brp_list
= calloc(cortex_a8
->brp_num
, sizeof(struct cortex_a8_brp
));
2453 /* cortex_a8->brb_enabled = ????; */
2454 for (i
= 0; i
< cortex_a8
->brp_num
; i
++) {
2455 cortex_a8
->brp_list
[i
].used
= 0;
2456 if (i
< (cortex_a8
->brp_num
-cortex_a8
->brp_num_context
))
2457 cortex_a8
->brp_list
[i
].type
= BRP_NORMAL
;
2459 cortex_a8
->brp_list
[i
].type
= BRP_CONTEXT
;
2460 cortex_a8
->brp_list
[i
].value
= 0;
2461 cortex_a8
->brp_list
[i
].control
= 0;
2462 cortex_a8
->brp_list
[i
].BRPn
= i
;
2465 LOG_DEBUG("Configured %i hw breakpoints", cortex_a8
->brp_num
);
2467 target_set_examined(target
);
2471 static int cortex_a8_examine(struct target
*target
)
2473 int retval
= ERROR_OK
;
2475 /* don't re-probe hardware after each reset */
2476 if (!target_was_examined(target
))
2477 retval
= cortex_a8_examine_first(target
);
2479 /* Configure core debug access */
2480 if (retval
== ERROR_OK
)
2481 retval
= cortex_a8_init_debug_access(target
);
2487 * Cortex-A8 target creation and initialization
2490 static int cortex_a8_init_target(struct command_context
*cmd_ctx
,
2491 struct target
*target
)
2493 /* examine_first() does a bunch of this */
2497 static int cortex_a8_init_arch_info(struct target
*target
,
2498 struct cortex_a8_common
*cortex_a8
, struct jtag_tap
*tap
)
2500 struct armv7a_common
*armv7a
= &cortex_a8
->armv7a_common
;
2501 struct adiv5_dap
*dap
= &armv7a
->dap
;
2503 armv7a
->arm
.dap
= dap
;
2505 /* Setup struct cortex_a8_common */
2506 cortex_a8
->common_magic
= CORTEX_A8_COMMON_MAGIC
;
2507 /* tap has no dap initialized */
2509 armv7a
->arm
.dap
= dap
;
2510 /* Setup struct cortex_a8_common */
2512 /* prepare JTAG information for the new target */
2513 cortex_a8
->jtag_info
.tap
= tap
;
2514 cortex_a8
->jtag_info
.scann_size
= 4;
2516 /* Leave (only) generic DAP stuff for debugport_init() */
2517 dap
->jtag_info
= &cortex_a8
->jtag_info
;
2519 /* Number of bits for tar autoincrement, impl. dep. at least 10 */
2520 dap
->tar_autoincr_block
= (1 << 10);
2521 dap
->memaccess_tck
= 80;
2524 armv7a
->arm
.dap
= tap
->dap
;
2526 cortex_a8
->fast_reg_read
= 0;
2528 /* register arch-specific functions */
2529 armv7a
->examine_debug_reason
= NULL
;
2531 armv7a
->post_debug_entry
= cortex_a8_post_debug_entry
;
2533 armv7a
->pre_restore_context
= NULL
;
2535 armv7a
->armv7a_mmu
.read_physical_memory
= cortex_a8_read_phys_memory
;
2538 /* arm7_9->handle_target_request = cortex_a8_handle_target_request; */
2540 /* REVISIT v7a setup should be in a v7a-specific routine */
2541 armv7a_init_arch_info(target
, armv7a
);
2542 target_register_timer_callback(cortex_a8_handle_target_request
, 1, 1, target
);
2547 static int cortex_a8_target_create(struct target
*target
, Jim_Interp
*interp
)
2549 struct cortex_a8_common
*cortex_a8
= calloc(1, sizeof(struct cortex_a8_common
));
2551 return cortex_a8_init_arch_info(target
, cortex_a8
, target
->tap
);
2556 static int cortex_a8_mmu(struct target
*target
, int *enabled
)
2558 if (target
->state
!= TARGET_HALTED
) {
2559 LOG_ERROR("%s: target not halted", __func__
);
2560 return ERROR_TARGET_INVALID
;
2563 *enabled
= target_to_cortex_a8(target
)->armv7a_common
.armv7a_mmu
.mmu_enabled
;
2567 static int cortex_a8_virt2phys(struct target
*target
,
2568 uint32_t virt
, uint32_t *phys
)
2570 int retval
= ERROR_FAIL
;
2571 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2572 struct adiv5_dap
*swjdp
= armv7a
->arm
.dap
;
2573 uint8_t apsel
= swjdp
->apsel
;
2574 if (apsel
== swjdp_memoryap
) {
2576 retval
= armv7a_mmu_translate_va(target
,
2578 if (retval
!= ERROR_OK
)
2581 } else {/* use this method if swjdp_memoryap not selected
2582 * mmu must be enable in order to get a correct translation */
2583 retval
= cortex_a8_mmu_modify(target
, 1);
2584 if (retval
!= ERROR_OK
)
2586 retval
= armv7a_mmu_translate_va_pa(target
, virt
, phys
, 1);
2592 COMMAND_HANDLER(cortex_a8_handle_cache_info_command
)
2594 struct target
*target
= get_current_target(CMD_CTX
);
2595 struct armv7a_common
*armv7a
= target_to_armv7a(target
);
2597 return armv7a_handle_cache_info_command(CMD_CTX
,
2598 &armv7a
->armv7a_mmu
.armv7a_cache
);
2602 COMMAND_HANDLER(cortex_a8_handle_dbginit_command
)
2604 struct target
*target
= get_current_target(CMD_CTX
);
2605 if (!target_was_examined(target
)) {
2606 LOG_ERROR("target not examined yet");
2610 return cortex_a8_init_debug_access(target
);
2612 COMMAND_HANDLER(cortex_a8_handle_smp_off_command
)
2614 struct target
*target
= get_current_target(CMD_CTX
);
2615 /* check target is an smp target */
2616 struct target_list
*head
;
2617 struct target
*curr
;
2618 head
= target
->head
;
2620 if (head
!= (struct target_list
*)NULL
) {
2621 while (head
!= (struct target_list
*)NULL
) {
2622 curr
= head
->target
;
2626 /* fixes the target display to the debugger */
2627 target
->gdb_service
->target
= target
;
2632 COMMAND_HANDLER(cortex_a8_handle_smp_on_command
)
2634 struct target
*target
= get_current_target(CMD_CTX
);
2635 struct target_list
*head
;
2636 struct target
*curr
;
2637 head
= target
->head
;
2638 if (head
!= (struct target_list
*)NULL
) {
2640 while (head
!= (struct target_list
*)NULL
) {
2641 curr
= head
->target
;
2649 COMMAND_HANDLER(cortex_a8_handle_smp_gdb_command
)
2651 struct target
*target
= get_current_target(CMD_CTX
);
2652 int retval
= ERROR_OK
;
2653 struct target_list
*head
;
2654 head
= target
->head
;
2655 if (head
!= (struct target_list
*)NULL
) {
2656 if (CMD_ARGC
== 1) {
2658 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[0], coreid
);
2659 if (ERROR_OK
!= retval
)
2661 target
->gdb_service
->core
[1] = coreid
;
2664 command_print(CMD_CTX
, "gdb coreid %d -> %d", target
->gdb_service
->core
[0]
2665 , target
->gdb_service
->core
[1]);
2670 static const struct command_registration cortex_a8_exec_command_handlers
[] = {
2672 .name
= "cache_info",
2673 .handler
= cortex_a8_handle_cache_info_command
,
2674 .mode
= COMMAND_EXEC
,
2675 .help
= "display information about target caches",
2680 .handler
= cortex_a8_handle_dbginit_command
,
2681 .mode
= COMMAND_EXEC
,
2682 .help
= "Initialize core debug",
2685 { .name
= "smp_off",
2686 .handler
= cortex_a8_handle_smp_off_command
,
2687 .mode
= COMMAND_EXEC
,
2688 .help
= "Stop smp handling",
2692 .handler
= cortex_a8_handle_smp_on_command
,
2693 .mode
= COMMAND_EXEC
,
2694 .help
= "Restart smp handling",
2699 .handler
= cortex_a8_handle_smp_gdb_command
,
2700 .mode
= COMMAND_EXEC
,
2701 .help
= "display/fix current core played to gdb",
2706 COMMAND_REGISTRATION_DONE
2708 static const struct command_registration cortex_a8_command_handlers
[] = {
2710 .chain
= arm_command_handlers
,
2713 .chain
= armv7a_command_handlers
,
2716 .name
= "cortex_a8",
2717 .mode
= COMMAND_ANY
,
2718 .help
= "Cortex-A8 command group",
2720 .chain
= cortex_a8_exec_command_handlers
,
2722 COMMAND_REGISTRATION_DONE
2725 struct target_type cortexa8_target
= {
2726 .name
= "cortex_a8",
2728 .poll
= cortex_a8_poll
,
2729 .arch_state
= armv7a_arch_state
,
2731 .target_request_data
= NULL
,
2733 .halt
= cortex_a8_halt
,
2734 .resume
= cortex_a8_resume
,
2735 .step
= cortex_a8_step
,
2737 .assert_reset
= cortex_a8_assert_reset
,
2738 .deassert_reset
= cortex_a8_deassert_reset
,
2739 .soft_reset_halt
= NULL
,
2741 /* REVISIT allow exporting VFP3 registers ... */
2742 .get_gdb_reg_list
= arm_get_gdb_reg_list
,
2744 .read_memory
= cortex_a8_read_memory
,
2745 .write_memory
= cortex_a8_write_memory
,
2746 .bulk_write_memory
= cortex_a8_bulk_write_memory
,
2748 .checksum_memory
= arm_checksum_memory
,
2749 .blank_check_memory
= arm_blank_check_memory
,
2751 .run_algorithm
= armv4_5_run_algorithm
,
2753 .add_breakpoint
= cortex_a8_add_breakpoint
,
2754 .add_context_breakpoint
= cortex_a8_add_context_breakpoint
,
2755 .add_hybrid_breakpoint
= cortex_a8_add_hybrid_breakpoint
,
2756 .remove_breakpoint
= cortex_a8_remove_breakpoint
,
2757 .add_watchpoint
= NULL
,
2758 .remove_watchpoint
= NULL
,
2760 .commands
= cortex_a8_command_handlers
,
2761 .target_create
= cortex_a8_target_create
,
2762 .init_target
= cortex_a8_init_target
,
2763 .examine
= cortex_a8_examine
,
2765 .read_phys_memory
= cortex_a8_read_phys_memory
,
2766 .write_phys_memory
= cortex_a8_write_phys_memory
,
2767 .mmu
= cortex_a8_mmu
,
2768 .virt2phys
= cortex_a8_virt2phys
,