diff options
Diffstat (limited to 'src/target')
| -rw-r--r-- | src/target/cortex_a.c | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/src/target/cortex_a.c b/src/target/cortex_a.c index 92ba5478..0a55a200 100644 --- a/src/target/cortex_a.c +++ b/src/target/cortex_a.c @@ -202,6 +202,7 @@ static int cortex_a_mmu_modify(struct target *target, int enable) static int cortex_a_init_debug_access(struct target *target) { struct armv7a_common *armv7a = target_to_armv7a(target); + uint32_t dscr; int retval; /* lock memory-mapped access to debug registers to prevent @@ -231,6 +232,16 @@ static int cortex_a_init_debug_access(struct target *target) /* Resync breakpoint registers */ + /* Enable halt for breakpoint, watchpoint and vector catch */ + retval = mem_ap_read_atomic_u32(armv7a->debug_ap, + armv7a->debug_base + CPUDBG_DSCR, &dscr); + if (retval != ERROR_OK) + return retval; + retval = mem_ap_write_atomic_u32(armv7a->debug_ap, + armv7a->debug_base + CPUDBG_DSCR, dscr | DSCR_HALT_DBG_MODE); + if (retval != ERROR_OK) + return retval; + /* Since this is likely called from init or reset, update target state information*/ return cortex_a_poll(target); } @@ -769,19 +780,6 @@ static int cortex_a_halt(struct target *target) if (retval != ERROR_OK) return retval; - /* - * enter halting debug mode - */ - retval = mem_ap_read_atomic_u32(armv7a->debug_ap, - armv7a->debug_base + CPUDBG_DSCR, &dscr); - if (retval != ERROR_OK) - return retval; - - retval = mem_ap_write_atomic_u32(armv7a->debug_ap, - armv7a->debug_base + CPUDBG_DSCR, dscr | DSCR_HALT_DBG_MODE); - if (retval != ERROR_OK) - return retval; - int64_t then = timeval_ms(); for (;; ) { retval = mem_ap_read_atomic_u32(armv7a->debug_ap, @@ -2889,7 +2887,20 @@ static int cortex_r4_target_create(struct target *target, Jim_Interp *interp) static void cortex_a_deinit_target(struct target *target) { struct cortex_a_common *cortex_a = target_to_cortex_a(target); - struct arm_dpm *dpm = &cortex_a->armv7a_common.dpm; + struct armv7a_common *armv7a = &cortex_a->armv7a_common; + struct arm_dpm *dpm = &armv7a->dpm; + uint32_t dscr; + int retval; + + if (target_was_examined(target)) { + /* Disable halt for breakpoint, watchpoint and vector catch */ + retval = mem_ap_read_atomic_u32(armv7a->debug_ap, + armv7a->debug_base + CPUDBG_DSCR, &dscr); + if (retval == ERROR_OK) + mem_ap_write_atomic_u32(armv7a->debug_ap, + armv7a->debug_base + CPUDBG_DSCR, + dscr & ~DSCR_HALT_DBG_MODE); + } free(cortex_a->brp_list); free(dpm->dbp); |