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 * 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 * Cortex-A8(tm) TRM, ARM DDI 0344H *
31 ***************************************************************************/
36 #include "cortex_a8.h"
40 #include "target_request.h"
41 #include "target_type.h"
44 int cortex_a8_register_commands(struct command_context_s
*cmd_ctx
);
46 /* forward declarations */
47 int cortex_a8_target_create(struct target_s
*target
, Jim_Interp
*interp
);
48 int cortex_a8_init_target(struct command_context_s
*cmd_ctx
,
49 struct target_s
*target
);
50 int cortex_a8_examine(struct target_s
*target
);
51 int cortex_a8_poll(target_t
*target
);
52 int cortex_a8_halt(target_t
*target
);
53 int cortex_a8_resume(struct target_s
*target
, int current
, uint32_t address
,
54 int handle_breakpoints
, int debug_execution
);
55 int cortex_a8_step(struct target_s
*target
, int current
, uint32_t address
,
56 int handle_breakpoints
);
57 int cortex_a8_debug_entry(target_t
*target
);
58 int cortex_a8_restore_context(target_t
*target
);
59 int cortex_a8_bulk_write_memory(target_t
*target
, uint32_t address
,
60 uint32_t count
, uint8_t *buffer
);
61 int cortex_a8_set_breakpoint(struct target_s
*target
,
62 breakpoint_t
*breakpoint
, uint8_t matchmode
);
63 int cortex_a8_unset_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
64 int cortex_a8_add_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
65 int cortex_a8_remove_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
66 int cortex_a8_dap_read_coreregister_u32(target_t
*target
,
67 uint32_t *value
, int regnum
);
68 int cortex_a8_dap_write_coreregister_u32(target_t
*target
,
69 uint32_t value
, int regnum
);
71 target_type_t cortexa8_target
=
75 .poll
= cortex_a8_poll
,
76 .arch_state
= armv7a_arch_state
,
78 .target_request_data
= NULL
,
80 .halt
= cortex_a8_halt
,
81 .resume
= cortex_a8_resume
,
82 .step
= cortex_a8_step
,
85 .deassert_reset
= NULL
,
86 .soft_reset_halt
= NULL
,
88 // .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
89 .get_gdb_reg_list
= armv4_5_get_gdb_reg_list
,
91 .read_memory
= cortex_a8_read_memory
,
92 .write_memory
= cortex_a8_write_memory
,
93 .bulk_write_memory
= cortex_a8_bulk_write_memory
,
94 .checksum_memory
= arm7_9_checksum_memory
,
95 .blank_check_memory
= arm7_9_blank_check_memory
,
97 .run_algorithm
= armv4_5_run_algorithm
,
99 .add_breakpoint
= cortex_a8_add_breakpoint
,
100 .remove_breakpoint
= cortex_a8_remove_breakpoint
,
101 .add_watchpoint
= NULL
,
102 .remove_watchpoint
= NULL
,
104 .register_commands
= cortex_a8_register_commands
,
105 .target_create
= cortex_a8_target_create
,
106 .init_target
= cortex_a8_init_target
,
107 .examine
= cortex_a8_examine
,
112 * FIXME do topology discovery using the ROM; don't
113 * assume this is an OMAP3.
115 #define swjdp_memoryap 0
116 #define swjdp_debugap 1
117 #define OMAP3530_DEBUG_BASE 0x54011000
120 * Cortex-A8 Basic debug access, very low level assumes state is saved
122 int cortex_a8_init_debug_access(target_t
*target
)
125 # Unlocking the debug registers for modification
126 mww
0x54011FB0 0xC5ACCE55 4
128 # Clear Sticky Power Down status Bit to enable access to
129 # the registers in the Core Power Domain
131 # Check that it is cleared
133 # Now we can read Core Debug Registers at offset 0x080
135 # We can also read RAM.
141 # Set DBGEN line for hardware debug (OMAP35xx)
142 mww
0x5401d030 0x00002000
148 mww
0x54011088 0x2000
154 int cortex_a8_exec_opcode(target_t
*target
, uint32_t opcode
)
158 /* get pointers to arch-specific information */
159 armv4_5_common_t
*armv4_5
= target
->arch_info
;
160 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
161 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
163 LOG_DEBUG("exec opcode 0x%08" PRIx32
, opcode
);
166 retvalue
= mem_ap_read_atomic_u32(swjdp
,
167 OMAP3530_DEBUG_BASE
+ CPUDBG_DSCR
, &dscr
);
169 while ((dscr
& (1 << 24)) == 0); /* Wait for InstrCompl bit to be set */
171 mem_ap_write_u32(swjdp
, OMAP3530_DEBUG_BASE
+ CPUDBG_ITR
, opcode
);
175 retvalue
= mem_ap_read_atomic_u32(swjdp
,
176 OMAP3530_DEBUG_BASE
+ CPUDBG_DSCR
, &dscr
);
178 while ((dscr
& (1 << 24)) == 0); /* Wait for InstrCompl bit to be set */
183 /**************************************************************************
184 Read core register with very few exec_opcode, fast but needs work_area.
185 This can cause problems with MMU active.
186 **************************************************************************/
187 int cortex_a8_read_regs_through_mem(target_t
*target
, uint32_t address
,
190 int retval
= ERROR_OK
;
191 /* get pointers to arch-specific information */
192 armv4_5_common_t
*armv4_5
= target
->arch_info
;
193 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
194 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
196 cortex_a8_dap_read_coreregister_u32(target
, regfile
, 0);
197 cortex_a8_dap_write_coreregister_u32(target
, address
, 0);
198 cortex_a8_exec_opcode(target
, ARMV4_5_STMIA(0, 0xFFFE, 0, 0));
199 dap_ap_select(swjdp
, swjdp_memoryap
);
200 mem_ap_read_buf_u32(swjdp
, (uint8_t *)(®file
[1]), 4*15, address
);
201 dap_ap_select(swjdp
, swjdp_debugap
);
206 int cortex_a8_read_cp(target_t
*target
, uint32_t *value
, uint8_t CP
,
207 uint8_t op1
, uint8_t CRn
, uint8_t CRm
, uint8_t op2
)
210 /* get pointers to arch-specific information */
211 armv4_5_common_t
*armv4_5
= target
->arch_info
;
212 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
213 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
215 cortex_a8_exec_opcode(target
, ARMV4_5_MRC(CP
, op1
, 0, CRn
, CRm
, op2
));
216 /* Move R0 to DTRTX */
217 cortex_a8_exec_opcode(target
, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
220 retval
= mem_ap_read_atomic_u32(swjdp
,
221 OMAP3530_DEBUG_BASE
+ CPUDBG_DTRTX
, value
);
226 int cortex_a8_write_cp(target_t
*target
, uint32_t value
,
227 uint8_t CP
, uint8_t op1
, uint8_t CRn
, uint8_t CRm
, uint8_t op2
)
231 /* get pointers to arch-specific information */
232 armv4_5_common_t
*armv4_5
= target
->arch_info
;
233 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
234 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
236 retval
= mem_ap_write_u32(swjdp
,
237 OMAP3530_DEBUG_BASE
+ CPUDBG_DTRRX
, value
);
238 /* Move DTRRX to r0 */
239 cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0));
241 cortex_a8_exec_opcode(target
, ARMV4_5_MCR(CP
, 0, 0, 0, 5, 0));
245 int cortex_a8_read_cp15(target_t
*target
, uint32_t op1
, uint32_t op2
,
246 uint32_t CRn
, uint32_t CRm
, uint32_t *value
)
248 return cortex_a8_read_cp(target
, value
, 15, op1
, CRn
, CRm
, op2
);
251 int cortex_a8_write_cp15(target_t
*target
, uint32_t op1
, uint32_t op2
,
252 uint32_t CRn
, uint32_t CRm
, uint32_t value
)
254 return cortex_a8_write_cp(target
, value
, 15, op1
, CRn
, CRm
, op2
);
257 int cortex_a8_dap_read_coreregister_u32(target_t
*target
,
258 uint32_t *value
, int regnum
)
260 int retval
= ERROR_OK
;
261 uint8_t reg
= regnum
&0xFF;
263 /* get pointers to arch-specific information */
264 armv4_5_common_t
*armv4_5
= target
->arch_info
;
265 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
266 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
268 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
275 /* Rn to DCCTX, MCR p14, 0, Rd, c0, c5, 0, 0xEE000E15 */
276 cortex_a8_exec_opcode(target
, ARMV4_5_MCR(14, 0, reg
, 0, 5, 0));
280 cortex_a8_exec_opcode(target
, 0xE1A0000F);
281 cortex_a8_exec_opcode(target
, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
285 cortex_a8_exec_opcode(target
, ARMV4_5_MRS(0, 0));
286 cortex_a8_exec_opcode(target
, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
290 retval
= mem_ap_read_atomic_u32(swjdp
,
291 OMAP3530_DEBUG_BASE
+ CPUDBG_DTRTX
, value
);
292 // retval = mem_ap_read_u32(swjdp, OMAP3530_DEBUG_BASE + CPUDBG_DTRTX, value);
297 int cortex_a8_dap_write_coreregister_u32(target_t
*target
, uint32_t value
, int regnum
)
299 int retval
= ERROR_OK
;
300 uint8_t Rd
= regnum
&0xFF;
302 /* get pointers to arch-specific information */
303 armv4_5_common_t
*armv4_5
= target
->arch_info
;
304 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
305 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
311 retval
= mem_ap_write_u32(swjdp
,
312 OMAP3530_DEBUG_BASE
+ CPUDBG_DTRRX
, value
);
316 /* DCCRX to Rd, MCR p14, 0, Rd, c0, c5, 0, 0xEE000E15 */
317 cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, Rd
, 0, 5, 0));
321 cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0));
322 cortex_a8_exec_opcode(target
, 0xE1A0F000);
326 cortex_a8_exec_opcode(target
, ARMV4_5_MRC(14, 0, 0, 0, 5, 0));
327 cortex_a8_exec_opcode(target
, ARMV4_5_MSR_GP(0, 0xF, 0));
328 /* Execute a PrefetchFlush instruction through the ITR. */
329 cortex_a8_exec_opcode(target
, ARMV4_5_MCR(15, 0, 0, 7, 5, 4));
336 * Cortex-A8 Run control
339 int cortex_a8_poll(target_t
*target
)
341 int retval
= ERROR_OK
;
343 /* get pointers to arch-specific information */
344 armv4_5_common_t
*armv4_5
= target
->arch_info
;
345 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
346 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
347 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
350 enum target_state prev_target_state
= target
->state
;
352 uint8_t saved_apsel
= dap_ap_get_select(swjdp
);
353 dap_ap_select(swjdp
, swjdp_debugap
);
354 retval
= mem_ap_read_atomic_u32(swjdp
,
355 OMAP3530_DEBUG_BASE
+ CPUDBG_DSCR
, &dscr
);
356 if (retval
!= ERROR_OK
)
358 dap_ap_select(swjdp
, saved_apsel
);
361 cortex_a8
->cpudbg_dscr
= dscr
;
363 if ((dscr
& 0x3) == 0x3)
365 if (prev_target_state
!= TARGET_HALTED
)
367 /* We have a halting debug event */
368 LOG_DEBUG("Target halted");
369 target
->state
= TARGET_HALTED
;
370 if ((prev_target_state
== TARGET_RUNNING
)
371 || (prev_target_state
== TARGET_RESET
))
373 retval
= cortex_a8_debug_entry(target
);
374 if (retval
!= ERROR_OK
)
377 target_call_event_callbacks(target
,
378 TARGET_EVENT_HALTED
);
380 if (prev_target_state
== TARGET_DEBUG_RUNNING
)
384 retval
= cortex_a8_debug_entry(target
);
385 if (retval
!= ERROR_OK
)
388 target_call_event_callbacks(target
,
389 TARGET_EVENT_DEBUG_HALTED
);
393 else if ((dscr
& 0x3) == 0x2)
395 target
->state
= TARGET_RUNNING
;
399 LOG_DEBUG("Unknown target state dscr = 0x%08" PRIx32
, dscr
);
400 target
->state
= TARGET_UNKNOWN
;
403 dap_ap_select(swjdp
, saved_apsel
);
408 int cortex_a8_halt(target_t
*target
)
410 int retval
= ERROR_OK
;
411 /* get pointers to arch-specific information */
412 armv4_5_common_t
*armv4_5
= target
->arch_info
;
413 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
414 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
416 uint8_t saved_apsel
= dap_ap_get_select(swjdp
);
417 dap_ap_select(swjdp
, swjdp_debugap
);
419 /* Perhaps we should do a read-modify-write here */
420 retval
= mem_ap_write_atomic_u32(swjdp
,
421 OMAP3530_DEBUG_BASE
+ CPUDBG_DRCR
, 0x1);
423 target
->debug_reason
= DBG_REASON_DBGRQ
;
424 dap_ap_select(swjdp
, saved_apsel
);
429 int cortex_a8_resume(struct target_s
*target
, int current
,
430 uint32_t address
, int handle_breakpoints
, int debug_execution
)
432 /* get pointers to arch-specific information */
433 armv4_5_common_t
*armv4_5
= target
->arch_info
;
434 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
435 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
436 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
438 // breakpoint_t *breakpoint = NULL;
441 uint8_t saved_apsel
= dap_ap_get_select(swjdp
);
442 dap_ap_select(swjdp
, swjdp_debugap
);
444 if (!debug_execution
)
446 target_free_all_working_areas(target
);
447 // cortex_m3_enable_breakpoints(target);
448 // cortex_m3_enable_watchpoints(target);
454 /* Disable interrupts */
455 /* We disable interrupts in the PRIMASK register instead of
456 * masking with C_MASKINTS,
457 * This is probably the same issue as Cortex-M3 Errata 377493:
458 * C_MASKINTS in parallel with disabled interrupts can cause
459 * local faults to not be taken. */
460 buf_set_u32(armv7m
->core_cache
->reg_list
[ARMV7M_PRIMASK
].value
, 0, 32, 1);
461 armv7m
->core_cache
->reg_list
[ARMV7M_PRIMASK
].dirty
= 1;
462 armv7m
->core_cache
->reg_list
[ARMV7M_PRIMASK
].valid
= 1;
464 /* Make sure we are in Thumb mode */
465 buf_set_u32(armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].value
, 0, 32,
466 buf_get_u32(armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].value
, 0, 32) | (1 << 24));
467 armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].dirty
= 1;
468 armv7m
->core_cache
->reg_list
[ARMV7M_xPSR
].valid
= 1;
472 /* current = 1: continue on current pc, otherwise continue at <address> */
473 resume_pc
= buf_get_u32(
474 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
475 armv4_5
->core_mode
, 15).value
,
480 /* Make sure that the Armv7 gdb thumb fixups does not
481 * kill the return address
483 if (!(cortex_a8
->cpudbg_dscr
& (1 << 5)))
485 resume_pc
&= 0xFFFFFFFC;
487 LOG_DEBUG("resume pc = 0x%08" PRIx32
, resume_pc
);
488 buf_set_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
489 armv4_5
->core_mode
, 15).value
,
491 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
492 armv4_5
->core_mode
, 15).dirty
= 1;
493 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
494 armv4_5
->core_mode
, 15).valid
= 1;
496 cortex_a8_restore_context(target
);
497 // arm7_9_restore_context(target); TODO Context is currently NOT Properly restored
499 /* the front-end may request us not to handle breakpoints */
500 if (handle_breakpoints
)
502 /* Single step past breakpoint at current address */
503 if ((breakpoint
= breakpoint_find(target
, resume_pc
)))
505 LOG_DEBUG("unset breakpoint at 0x%8.8x", breakpoint
->address
);
506 cortex_m3_unset_breakpoint(target
, breakpoint
);
507 cortex_m3_single_step_core(target
);
508 cortex_m3_set_breakpoint(target
, breakpoint
);
514 /* Perhaps we should do a read-modify-write here */
515 mem_ap_write_atomic_u32(swjdp
, OMAP3530_DEBUG_BASE
+ CPUDBG_DRCR
, 0x2);
517 target
->debug_reason
= DBG_REASON_NOTHALTED
;
518 target
->state
= TARGET_RUNNING
;
520 /* registers are now invalid */
521 armv4_5_invalidate_core_regs(target
);
523 if (!debug_execution
)
525 target
->state
= TARGET_RUNNING
;
526 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
527 LOG_DEBUG("target resumed at 0x%" PRIx32
, resume_pc
);
531 target
->state
= TARGET_DEBUG_RUNNING
;
532 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_RESUMED
);
533 LOG_DEBUG("target debug resumed at 0x%" PRIx32
, resume_pc
);
536 dap_ap_select(swjdp
, saved_apsel
);
541 int cortex_a8_debug_entry(target_t
*target
)
544 uint32_t regfile
[16], pc
, cpsr
;
545 int retval
= ERROR_OK
;
546 working_area_t
*regfile_working_area
= NULL
;
548 /* get pointers to arch-specific information */
549 armv4_5_common_t
*armv4_5
= target
->arch_info
;
550 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
551 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
552 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
554 if (armv7a
->pre_debug_entry
)
555 armv7a
->pre_debug_entry(target
);
557 LOG_DEBUG("dscr = 0x%08" PRIx32
, cortex_a8
->cpudbg_dscr
);
559 /* Examine debug reason */
560 switch ((cortex_a8
->cpudbg_dscr
>> 2)&0xF)
564 target
->debug_reason
= DBG_REASON_DBGRQ
;
568 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
571 target
->debug_reason
= DBG_REASON_WATCHPOINT
;
574 target
->debug_reason
= DBG_REASON_UNDEFINED
;
578 /* Examine target state and mode */
579 dap_ap_select(swjdp
, swjdp_memoryap
);
580 if (cortex_a8
->fast_reg_read
)
581 target_alloc_working_area(target
, 64, ®file_working_area
);
583 /* First load register acessible through core debug port*/
584 if (!regfile_working_area
)
586 for (i
= 0; i
<= 15; i
++)
587 cortex_a8_dap_read_coreregister_u32(target
,
592 cortex_a8_read_regs_through_mem(target
,
593 regfile_working_area
->address
, regfile
);
594 dap_ap_select(swjdp
, swjdp_memoryap
);
595 target_free_working_area(target
, regfile_working_area
);
598 cortex_a8_dap_read_coreregister_u32(target
, &cpsr
, 16);
600 dap_ap_select(swjdp
, swjdp_debugap
);
601 LOG_DEBUG("cpsr: %8.8" PRIx32
, cpsr
);
603 armv4_5
->core_mode
= cpsr
& 0x3F;
605 for (i
= 0; i
<= ARM_PC
; i
++)
607 buf_set_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
608 armv4_5
->core_mode
, i
).value
,
610 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
611 armv4_5
->core_mode
, i
).valid
= 1;
612 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
613 armv4_5
->core_mode
, i
).dirty
= 0;
615 buf_set_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
616 armv4_5
->core_mode
, 16).value
,
618 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).valid
= 1;
619 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).dirty
= 0;
621 /* Fixup PC Resume Address */
622 /* TODO Her we should use arch->core_state */
623 if (cortex_a8
->cpudbg_dscr
& (1 << 5))
625 // T bit set for Thumb or ThumbEE state
626 regfile
[ARM_PC
] -= 4;
631 regfile
[ARM_PC
] -= 8;
633 buf_set_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
634 armv4_5
->core_mode
, ARM_PC
).value
,
635 0, 32, regfile
[ARM_PC
]);
637 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 0)
638 .dirty
= ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
639 armv4_5
->core_mode
, 0).valid
;
640 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 15)
641 .dirty
= ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
642 armv4_5
->core_mode
, 15).valid
;
645 /* TODO, Move this */
646 uint32_t cp15_control_register
, cp15_cacr
, cp15_nacr
;
647 cortex_a8_read_cp(target
, &cp15_control_register
, 15, 0, 1, 0, 0);
648 LOG_DEBUG("cp15_control_register = 0x%08x", cp15_control_register
);
650 cortex_a8_read_cp(target
, &cp15_cacr
, 15, 0, 1, 0, 2);
651 LOG_DEBUG("cp15 Coprocessor Access Control Register = 0x%08x", cp15_cacr
);
653 cortex_a8_read_cp(target
, &cp15_nacr
, 15, 0, 1, 1, 2);
654 LOG_DEBUG("cp15 Nonsecure Access Control Register = 0x%08x", cp15_nacr
);
657 /* Are we in an exception handler */
658 // armv4_5->exception_number = 0;
659 if (armv7a
->post_debug_entry
)
660 armv7a
->post_debug_entry(target
);
668 void cortex_a8_post_debug_entry(target_t
*target
)
670 /* get pointers to arch-specific information */
671 armv4_5_common_t
*armv4_5
= target
->arch_info
;
672 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
673 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
675 // cortex_a8_read_cp(target, &cp15_control_register, 15, 0, 1, 0, 0);
676 /* examine cp15 control reg */
677 armv7a
->read_cp15(target
, 0, 0, 1, 0, &cortex_a8
->cp15_control_reg
);
678 jtag_execute_queue();
679 LOG_DEBUG("cp15_control_reg: %8.8" PRIx32
, cortex_a8
->cp15_control_reg
);
681 if (armv7a
->armv4_5_mmu
.armv4_5_cache
.ctype
== -1)
683 uint32_t cache_type_reg
;
684 /* identify caches */
685 armv7a
->read_cp15(target
, 0, 1, 0, 0, &cache_type_reg
);
686 jtag_execute_queue();
687 /* FIXME the armv4_4 cache info DOES NOT APPLY to Cortex-A8 */
688 armv4_5_identify_cache(cache_type_reg
,
689 &armv7a
->armv4_5_mmu
.armv4_5_cache
);
692 armv7a
->armv4_5_mmu
.mmu_enabled
=
693 (cortex_a8
->cp15_control_reg
& 0x1U
) ? 1 : 0;
694 armv7a
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
=
695 (cortex_a8
->cp15_control_reg
& 0x4U
) ? 1 : 0;
696 armv7a
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
=
697 (cortex_a8
->cp15_control_reg
& 0x1000U
) ? 1 : 0;
702 int cortex_a8_step(struct target_s
*target
, int current
, uint32_t address
,
703 int handle_breakpoints
)
705 /* get pointers to arch-specific information */
706 armv4_5_common_t
*armv4_5
= target
->arch_info
;
707 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
708 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
709 breakpoint_t
*breakpoint
= NULL
;
710 breakpoint_t stepbreakpoint
;
714 if (target
->state
!= TARGET_HALTED
)
716 LOG_WARNING("target not halted");
717 return ERROR_TARGET_NOT_HALTED
;
720 /* current = 1: continue on current pc, otherwise continue at <address> */
723 buf_set_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
724 armv4_5
->core_mode
, ARM_PC
).value
,
729 address
= buf_get_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
730 armv4_5
->core_mode
, ARM_PC
).value
,
734 /* The front-end may request us not to handle breakpoints.
735 * But since Cortex-A8 uses breakpoint for single step,
736 * we MUST handle breakpoints.
738 handle_breakpoints
= 1;
739 if (handle_breakpoints
) {
740 breakpoint
= breakpoint_find(target
,
741 buf_get_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
742 armv4_5
->core_mode
, 15).value
,
745 cortex_a8_unset_breakpoint(target
, breakpoint
);
748 /* Setup single step breakpoint */
749 stepbreakpoint
.address
= address
;
750 stepbreakpoint
.length
= (cortex_a8
->cpudbg_dscr
& (1 << 5)) ? 2 : 4;
751 stepbreakpoint
.type
= BKPT_HARD
;
752 stepbreakpoint
.set
= 0;
754 /* Break on IVA mismatch */
755 cortex_a8_set_breakpoint(target
, &stepbreakpoint
, 0x04);
757 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
759 cortex_a8_resume(target
, 1, address
, 0, 0);
761 while (target
->state
!= TARGET_HALTED
)
763 cortex_a8_poll(target
);
766 LOG_WARNING("timeout waiting for target halt");
771 cortex_a8_unset_breakpoint(target
, &stepbreakpoint
);
772 if (timeout
> 0) target
->debug_reason
= DBG_REASON_BREAKPOINT
;
775 cortex_a8_set_breakpoint(target
, breakpoint
, 0);
777 if (target
->state
!= TARGET_HALTED
)
778 LOG_DEBUG("target stepped");
783 int cortex_a8_restore_context(target_t
*target
)
788 /* get pointers to arch-specific information */
789 armv4_5_common_t
*armv4_5
= target
->arch_info
;
790 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
794 if (armv7a
->pre_restore_context
)
795 armv7a
->pre_restore_context(target
);
797 for (i
= 15; i
>= 0; i
--)
799 if (ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
800 armv4_5
->core_mode
, i
).dirty
)
802 value
= buf_get_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
803 armv4_5
->core_mode
, i
).value
,
805 /* TODO Check return values */
806 cortex_a8_dap_write_coreregister_u32(target
, value
, i
);
810 if (armv7a
->post_restore_context
)
811 armv7a
->post_restore_context(target
);
818 * Cortex-A8 Core register functions
821 int cortex_a8_load_core_reg_u32(struct target_s
*target
, int num
,
822 armv4_5_mode_t mode
, uint32_t * value
)
825 /* get pointers to arch-specific information */
826 armv4_5_common_t
*armv4_5
= target
->arch_info
;
828 if ((num
<= ARM_CPSR
))
830 /* read a normal core register */
831 retval
= cortex_a8_dap_read_coreregister_u32(target
, value
, num
);
833 if (retval
!= ERROR_OK
)
835 LOG_ERROR("JTAG failure %i", retval
);
836 return ERROR_JTAG_DEVICE_ERROR
;
838 LOG_DEBUG("load from core reg %i value 0x%" PRIx32
, num
, *value
);
842 return ERROR_INVALID_ARGUMENTS
;
845 /* Register other than r0 - r14 uses r0 for access */
847 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
848 armv4_5
->core_mode
, 0).dirty
=
849 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
850 armv4_5
->core_mode
, 0).valid
;
851 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
852 armv4_5
->core_mode
, 15).dirty
=
853 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
854 armv4_5
->core_mode
, 15).valid
;
859 int cortex_a8_store_core_reg_u32(struct target_s
*target
, int num
,
860 armv4_5_mode_t mode
, uint32_t value
)
865 /* get pointers to arch-specific information */
866 armv4_5_common_t
*armv4_5
= target
->arch_info
;
868 #ifdef ARMV7_GDB_HACKS
869 /* If the LR register is being modified, make sure it will put us
870 * in "thumb" mode, or an INVSTATE exception will occur. This is a
871 * hack to deal with the fact that gdb will sometimes "forge"
872 * return addresses, and doesn't set the LSB correctly (i.e., when
873 * printing expressions containing function calls, it sets LR=0.) */
879 if ((num
<= ARM_CPSR
))
881 retval
= cortex_a8_dap_write_coreregister_u32(target
, value
, num
);
882 if (retval
!= ERROR_OK
)
884 LOG_ERROR("JTAG failure %i", retval
);
885 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
886 armv4_5
->core_mode
, num
).dirty
=
887 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
888 armv4_5
->core_mode
, num
).valid
;
889 return ERROR_JTAG_DEVICE_ERROR
;
891 LOG_DEBUG("write core reg %i value 0x%" PRIx32
, num
, value
);
895 return ERROR_INVALID_ARGUMENTS
;
902 int cortex_a8_read_core_reg(struct target_s
*target
, int num
,
903 enum armv4_5_mode mode
)
907 armv4_5_common_t
*armv4_5
= target
->arch_info
;
908 cortex_a8_dap_read_coreregister_u32(target
, &value
, num
);
910 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
915 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, mode
, num
).valid
= 1;
916 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, mode
, num
).dirty
= 0;
917 buf_set_u32(ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
,
918 mode
, num
).value
, 0, 32, value
);
923 int cortex_a8_write_core_reg(struct target_s
*target
, int num
,
924 enum armv4_5_mode mode
, uint32_t value
)
927 armv4_5_common_t
*armv4_5
= target
->arch_info
;
929 cortex_a8_dap_write_coreregister_u32(target
, value
, num
);
930 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
935 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, mode
, num
).valid
= 1;
936 ARMV7A_CORE_REG_MODE(armv4_5
->core_cache
, mode
, num
).dirty
= 0;
943 * Cortex-A8 Breakpoint and watchpoint fuctions
946 /* Setup hardware Breakpoint Register Pair */
947 int cortex_a8_set_breakpoint(struct target_s
*target
,
948 breakpoint_t
*breakpoint
, uint8_t matchmode
)
953 uint8_t byte_addr_select
= 0x0F;
956 /* get pointers to arch-specific information */
957 armv4_5_common_t
*armv4_5
= target
->arch_info
;
958 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
959 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
960 cortex_a8_brp_t
* brp_list
= cortex_a8
->brp_list
;
964 LOG_WARNING("breakpoint already set");
968 if (breakpoint
->type
== BKPT_HARD
)
970 while (brp_list
[brp_i
].used
&& (brp_i
< cortex_a8
->brp_num
))
972 if (brp_i
>= cortex_a8
->brp_num
)
974 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
977 breakpoint
->set
= brp_i
+ 1;
978 if (breakpoint
->length
== 2)
980 byte_addr_select
= (3 << (breakpoint
->address
& 0x02));
982 control
= ((matchmode
& 0x7) << 20)
983 | (byte_addr_select
<< 5)
985 brp_list
[brp_i
].used
= 1;
986 brp_list
[brp_i
].value
= (breakpoint
->address
& 0xFFFFFFFC);
987 brp_list
[brp_i
].control
= control
;
988 target_write_u32(target
, OMAP3530_DEBUG_BASE
989 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
990 brp_list
[brp_i
].value
);
991 target_write_u32(target
, OMAP3530_DEBUG_BASE
992 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
993 brp_list
[brp_i
].control
);
994 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_i
,
995 brp_list
[brp_i
].control
,
996 brp_list
[brp_i
].value
);
998 else if (breakpoint
->type
== BKPT_SOFT
)
1001 if (breakpoint
->length
== 2)
1003 buf_set_u32(code
, 0, 32, ARMV5_T_BKPT(0x11));
1007 buf_set_u32(code
, 0, 32, ARMV5_BKPT(0x11));
1009 retval
= target
->type
->read_memory(target
,
1010 breakpoint
->address
& 0xFFFFFFFE,
1011 breakpoint
->length
, 1,
1012 breakpoint
->orig_instr
);
1013 if (retval
!= ERROR_OK
)
1015 retval
= target
->type
->write_memory(target
,
1016 breakpoint
->address
& 0xFFFFFFFE,
1017 breakpoint
->length
, 1, code
);
1018 if (retval
!= ERROR_OK
)
1020 breakpoint
->set
= 0x11; /* Any nice value but 0 */
1026 int cortex_a8_unset_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
1029 /* get pointers to arch-specific information */
1030 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1031 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1032 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
1033 cortex_a8_brp_t
* brp_list
= cortex_a8
->brp_list
;
1035 if (!breakpoint
->set
)
1037 LOG_WARNING("breakpoint not set");
1041 if (breakpoint
->type
== BKPT_HARD
)
1043 int brp_i
= breakpoint
->set
- 1;
1044 if ((brp_i
< 0) || (brp_i
>= cortex_a8
->brp_num
))
1046 LOG_DEBUG("Invalid BRP number in breakpoint");
1049 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx32
, brp_i
,
1050 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1051 brp_list
[brp_i
].used
= 0;
1052 brp_list
[brp_i
].value
= 0;
1053 brp_list
[brp_i
].control
= 0;
1054 target_write_u32(target
, OMAP3530_DEBUG_BASE
1055 + CPUDBG_BCR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1056 brp_list
[brp_i
].control
);
1057 target_write_u32(target
, OMAP3530_DEBUG_BASE
1058 + CPUDBG_BVR_BASE
+ 4 * brp_list
[brp_i
].BRPn
,
1059 brp_list
[brp_i
].value
);
1063 /* restore original instruction (kept in target endianness) */
1064 if (breakpoint
->length
== 4)
1066 retval
= target
->type
->write_memory(target
,
1067 breakpoint
->address
& 0xFFFFFFFE,
1068 4, 1, breakpoint
->orig_instr
);
1069 if (retval
!= ERROR_OK
)
1074 retval
= target
->type
->write_memory(target
,
1075 breakpoint
->address
& 0xFFFFFFFE,
1076 2, 1, breakpoint
->orig_instr
);
1077 if (retval
!= ERROR_OK
)
1081 breakpoint
->set
= 0;
1086 int cortex_a8_add_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
1088 /* get pointers to arch-specific information */
1089 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1090 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1091 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
1093 if ((breakpoint
->type
== BKPT_HARD
) && (cortex_a8
->brp_num_available
< 1))
1095 LOG_INFO("no hardware breakpoint available");
1096 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1099 if (breakpoint
->type
== BKPT_HARD
)
1100 cortex_a8
->brp_num_available
--;
1101 cortex_a8_set_breakpoint(target
, breakpoint
, 0x00); /* Exact match */
1106 int cortex_a8_remove_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
1108 /* get pointers to arch-specific information */
1109 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1110 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1111 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
1114 /* It is perfectly possible to remove brakpoints while the taget is running */
1115 if (target
->state
!= TARGET_HALTED
)
1117 LOG_WARNING("target not halted");
1118 return ERROR_TARGET_NOT_HALTED
;
1122 if (breakpoint
->set
)
1124 cortex_a8_unset_breakpoint(target
, breakpoint
);
1125 if (breakpoint
->type
== BKPT_HARD
)
1126 cortex_a8
->brp_num_available
++ ;
1136 * Cortex-A8 Reset fuctions
1141 * Cortex-A8 Memory access
1143 * This is same Cortex M3 but we must also use the correct
1144 * ap number for every access.
1147 int cortex_a8_read_memory(struct target_s
*target
, uint32_t address
,
1148 uint32_t size
, uint32_t count
, uint8_t *buffer
)
1150 /* get pointers to arch-specific information */
1151 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1152 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1153 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
1155 int retval
= ERROR_OK
;
1157 /* sanitize arguments */
1158 if (((size
!= 4) && (size
!= 2) && (size
!= 1)) || (count
== 0) || !(buffer
))
1159 return ERROR_INVALID_ARGUMENTS
;
1161 /* cortex_a8 handles unaligned memory access */
1163 // ??? dap_ap_select(swjdp, swjdp_memoryap);
1168 retval
= mem_ap_read_buf_u32(swjdp
, buffer
, 4 * count
, address
);
1171 retval
= mem_ap_read_buf_u16(swjdp
, buffer
, 2 * count
, address
);
1174 retval
= mem_ap_read_buf_u8(swjdp
, buffer
, count
, address
);
1177 LOG_ERROR("BUG: we shouldn't get here");
1184 int cortex_a8_write_memory(struct target_s
*target
, uint32_t address
,
1185 uint32_t size
, uint32_t count
, uint8_t *buffer
)
1187 /* get pointers to arch-specific information */
1188 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1189 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1190 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
1194 /* sanitize arguments */
1195 if (((size
!= 4) && (size
!= 2) && (size
!= 1)) || (count
== 0) || !(buffer
))
1196 return ERROR_INVALID_ARGUMENTS
;
1198 // ??? dap_ap_select(swjdp, swjdp_memoryap);
1203 retval
= mem_ap_write_buf_u32(swjdp
, buffer
, 4 * count
, address
);
1206 retval
= mem_ap_write_buf_u16(swjdp
, buffer
, 2 * count
, address
);
1209 retval
= mem_ap_write_buf_u8(swjdp
, buffer
, count
, address
);
1212 LOG_ERROR("BUG: we shouldn't get here");
1219 int cortex_a8_bulk_write_memory(target_t
*target
, uint32_t address
,
1220 uint32_t count
, uint8_t *buffer
)
1222 return cortex_a8_write_memory(target
, address
, 4, count
, buffer
);
1226 int cortex_a8_dcc_read(swjdp_common_t
*swjdp
, uint8_t *value
, uint8_t *ctrl
)
1231 mem_ap_read_buf_u16(swjdp
, (uint8_t*)&dcrdr
, 1, DCB_DCRDR
);
1232 *ctrl
= (uint8_t)dcrdr
;
1233 *value
= (uint8_t)(dcrdr
>> 8);
1235 LOG_DEBUG("data 0x%x ctrl 0x%x", *value
, *ctrl
);
1237 /* write ack back to software dcc register
1238 * signify we have read data */
1239 if (dcrdr
& (1 << 0))
1242 mem_ap_write_buf_u16(swjdp
, (uint8_t*)&dcrdr
, 1, DCB_DCRDR
);
1249 int cortex_a8_handle_target_request(void *priv
)
1251 target_t
*target
= priv
;
1252 if (!target
->type
->examined
)
1254 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1255 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1256 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
1259 if (!target
->dbg_msg_enabled
)
1262 if (target
->state
== TARGET_RUNNING
)
1267 cortex_a8_dcc_read(swjdp
, &data
, &ctrl
);
1269 /* check if we have data */
1270 if (ctrl
& (1 << 0))
1274 /* we assume target is quick enough */
1276 cortex_a8_dcc_read(swjdp
, &data
, &ctrl
);
1277 request
|= (data
<< 8);
1278 cortex_a8_dcc_read(swjdp
, &data
, &ctrl
);
1279 request
|= (data
<< 16);
1280 cortex_a8_dcc_read(swjdp
, &data
, &ctrl
);
1281 request
|= (data
<< 24);
1282 target_request(target
, request
);
1290 * Cortex-A8 target information and configuration
1293 int cortex_a8_examine(struct target_s
*target
)
1295 /* get pointers to arch-specific information */
1296 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1297 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1298 cortex_a8_common_t
*cortex_a8
= armv7a
->arch_info
;
1299 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
1303 int retval
= ERROR_OK
;
1304 uint32_t didr
, ctypr
, ttypr
, cpuid
;
1308 /* We do one extra read to ensure DAP is configured,
1309 * we call ahbap_debugport_init(swjdp) instead
1311 ahbap_debugport_init(swjdp
);
1312 mem_ap_read_atomic_u32(swjdp
, OMAP3530_DEBUG_BASE
+ CPUDBG_CPUID
, &cpuid
);
1313 if ((retval
= mem_ap_read_atomic_u32(swjdp
,
1314 OMAP3530_DEBUG_BASE
+ CPUDBG_CPUID
, &cpuid
)) != ERROR_OK
)
1316 LOG_DEBUG("Examine failed");
1320 if ((retval
= mem_ap_read_atomic_u32(swjdp
,
1321 OMAP3530_DEBUG_BASE
+ CPUDBG_CTYPR
, &ctypr
)) != ERROR_OK
)
1323 LOG_DEBUG("Examine failed");
1327 if ((retval
= mem_ap_read_atomic_u32(swjdp
,
1328 OMAP3530_DEBUG_BASE
+ CPUDBG_TTYPR
, &ttypr
)) != ERROR_OK
)
1330 LOG_DEBUG("Examine failed");
1334 if ((retval
= mem_ap_read_atomic_u32(swjdp
,
1335 OMAP3530_DEBUG_BASE
+ CPUDBG_DIDR
, &didr
)) != ERROR_OK
)
1337 LOG_DEBUG("Examine failed");
1341 LOG_DEBUG("cpuid = 0x%08" PRIx32
, cpuid
);
1342 LOG_DEBUG("ctypr = 0x%08" PRIx32
, ctypr
);
1343 LOG_DEBUG("ttypr = 0x%08" PRIx32
, ttypr
);
1344 LOG_DEBUG("didr = 0x%08" PRIx32
, didr
);
1346 /* Setup Breakpoint Register Pairs */
1347 cortex_a8
->brp_num
= ((didr
>> 24) & 0x0F) + 1;
1348 cortex_a8
->brp_num_context
= ((didr
>> 20) & 0x0F) + 1;
1349 cortex_a8
->brp_num_available
= cortex_a8
->brp_num
;
1350 cortex_a8
->brp_list
= calloc(cortex_a8
->brp_num
, sizeof(cortex_a8_brp_t
));
1351 // cortex_a8->brb_enabled = ????;
1352 for (i
= 0; i
< cortex_a8
->brp_num
; i
++)
1354 cortex_a8
->brp_list
[i
].used
= 0;
1355 if (i
< (cortex_a8
->brp_num
-cortex_a8
->brp_num_context
))
1356 cortex_a8
->brp_list
[i
].type
= BRP_NORMAL
;
1358 cortex_a8
->brp_list
[i
].type
= BRP_CONTEXT
;
1359 cortex_a8
->brp_list
[i
].value
= 0;
1360 cortex_a8
->brp_list
[i
].control
= 0;
1361 cortex_a8
->brp_list
[i
].BRPn
= i
;
1364 /* Setup Watchpoint Register Pairs */
1365 cortex_a8
->wrp_num
= ((didr
>> 28) & 0x0F) + 1;
1366 cortex_a8
->wrp_num_available
= cortex_a8
->wrp_num
;
1367 cortex_a8
->wrp_list
= calloc(cortex_a8
->wrp_num
, sizeof(cortex_a8_wrp_t
));
1368 for (i
= 0; i
< cortex_a8
->wrp_num
; i
++)
1370 cortex_a8
->wrp_list
[i
].used
= 0;
1371 cortex_a8
->wrp_list
[i
].type
= 0;
1372 cortex_a8
->wrp_list
[i
].value
= 0;
1373 cortex_a8
->wrp_list
[i
].control
= 0;
1374 cortex_a8
->wrp_list
[i
].WRPn
= i
;
1376 LOG_DEBUG("Configured %i hw breakpoint pairs and %i hw watchpoint pairs",
1377 cortex_a8
->brp_num
, cortex_a8
->wrp_num
);
1379 target
->type
->examined
= 1;
1385 * Cortex-A8 target creation and initialization
1388 void cortex_a8_build_reg_cache(target_t
*target
)
1390 reg_cache_t
**cache_p
= register_get_last_cache_p(&target
->reg_cache
);
1391 /* get pointers to arch-specific information */
1392 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1394 (*cache_p
) = armv4_5_build_reg_cache(target
, armv4_5
);
1395 armv4_5
->core_cache
= (*cache_p
);
1399 int cortex_a8_init_target(struct command_context_s
*cmd_ctx
,
1400 struct target_s
*target
)
1402 cortex_a8_build_reg_cache(target
);
1406 int cortex_a8_init_arch_info(target_t
*target
,
1407 cortex_a8_common_t
*cortex_a8
, jtag_tap_t
*tap
)
1409 armv4_5_common_t
*armv4_5
;
1410 armv7a_common_t
*armv7a
;
1412 armv7a
= &cortex_a8
->armv7a_common
;
1413 armv4_5
= &armv7a
->armv4_5_common
;
1414 swjdp_common_t
*swjdp
= &armv7a
->swjdp_info
;
1416 /* Setup cortex_a8_common_t */
1417 cortex_a8
->common_magic
= CORTEX_A8_COMMON_MAGIC
;
1418 cortex_a8
->arch_info
= NULL
;
1419 armv7a
->arch_info
= cortex_a8
;
1420 armv4_5
->arch_info
= armv7a
;
1422 armv4_5_init_arch_info(target
, armv4_5
);
1424 /* prepare JTAG information for the new target */
1425 cortex_a8
->jtag_info
.tap
= tap
;
1426 cortex_a8
->jtag_info
.scann_size
= 4;
1428 swjdp
->dp_select_value
= -1;
1429 swjdp
->ap_csw_value
= -1;
1430 swjdp
->ap_tar_value
= -1;
1431 swjdp
->jtag_info
= &cortex_a8
->jtag_info
;
1432 swjdp
->memaccess_tck
= 80;
1434 /* Number of bits for tar autoincrement, impl. dep. at least 10 */
1435 swjdp
->tar_autoincr_block
= (1 << 10);
1437 cortex_a8
->fast_reg_read
= 0;
1440 /* register arch-specific functions */
1441 armv7a
->examine_debug_reason
= NULL
;
1443 armv7a
->pre_debug_entry
= NULL
;
1444 armv7a
->post_debug_entry
= cortex_a8_post_debug_entry
;
1446 armv7a
->pre_restore_context
= NULL
;
1447 armv7a
->post_restore_context
= NULL
;
1448 armv7a
->armv4_5_mmu
.armv4_5_cache
.ctype
= -1;
1449 // armv7a->armv4_5_mmu.get_ttb = armv7a_get_ttb;
1450 armv7a
->armv4_5_mmu
.read_memory
= cortex_a8_read_memory
;
1451 armv7a
->armv4_5_mmu
.write_memory
= cortex_a8_write_memory
;
1452 // armv7a->armv4_5_mmu.disable_mmu_caches = armv7a_disable_mmu_caches;
1453 // armv7a->armv4_5_mmu.enable_mmu_caches = armv7a_enable_mmu_caches;
1454 armv7a
->armv4_5_mmu
.has_tiny_pages
= 1;
1455 armv7a
->armv4_5_mmu
.mmu_enabled
= 0;
1456 armv7a
->read_cp15
= cortex_a8_read_cp15
;
1457 armv7a
->write_cp15
= cortex_a8_write_cp15
;
1460 // arm7_9->handle_target_request = cortex_a8_handle_target_request;
1462 armv4_5
->read_core_reg
= cortex_a8_read_core_reg
;
1463 armv4_5
->write_core_reg
= cortex_a8_write_core_reg
;
1464 // armv4_5->full_context = arm7_9_full_context;
1466 // armv4_5->load_core_reg_u32 = cortex_a8_load_core_reg_u32;
1467 // armv4_5->store_core_reg_u32 = cortex_a8_store_core_reg_u32;
1468 // armv4_5->read_core_reg = armv4_5_read_core_reg; /* this is default */
1469 // armv4_5->write_core_reg = armv4_5_write_core_reg;
1471 target_register_timer_callback(cortex_a8_handle_target_request
, 1, 1, target
);
1476 int cortex_a8_target_create(struct target_s
*target
, Jim_Interp
*interp
)
1478 cortex_a8_common_t
*cortex_a8
= calloc(1, sizeof(cortex_a8_common_t
));
1480 cortex_a8_init_arch_info(target
, cortex_a8
, target
->tap
);
1485 static int cortex_a8_handle_cache_info_command(struct command_context_s
*cmd_ctx
,
1486 char *cmd
, char **args
, int argc
)
1488 target_t
*target
= get_current_target(cmd_ctx
);
1489 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1490 armv7a_common_t
*armv7a
= armv4_5
->arch_info
;
1492 return armv4_5_handle_cache_info_command(cmd_ctx
,
1493 &armv7a
->armv4_5_mmu
.armv4_5_cache
);
1497 int cortex_a8_register_commands(struct command_context_s
*cmd_ctx
)
1499 command_t
*cortex_a8_cmd
;
1500 int retval
= ERROR_OK
;
1502 armv4_5_register_commands(cmd_ctx
);
1503 armv7a_register_commands(cmd_ctx
);
1505 cortex_a8_cmd
= register_command(cmd_ctx
, NULL
, "cortex_a8",
1507 "cortex_a8 specific commands");
1509 register_command(cmd_ctx
, cortex_a8_cmd
, "cache_info",
1510 cortex_a8_handle_cache_info_command
, COMMAND_EXEC
,
1511 "display information about target caches");
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