diff options
Diffstat (limited to 'src/target')
| -rw-r--r-- | src/target/aarch64.c | 55 |
1 files changed, 27 insertions, 28 deletions
diff --git a/src/target/aarch64.c b/src/target/aarch64.c index ce4a8f6a..947c1ecf 100644 --- a/src/target/aarch64.c +++ b/src/target/aarch64.c @@ -279,6 +279,28 @@ static int aarch64_dpm_setup(struct aarch64_common *a8, uint64_t debug) return retval; } +static int aarch64_set_dscr_bits(struct target *target, unsigned long bit_mask, unsigned long value) +{ + struct armv8_common *armv8 = target_to_armv8(target); + uint32_t dscr; + + /* Read DSCR */ + int retval = mem_ap_read_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, &dscr); + if (ERROR_OK != retval) + return retval; + + /* clear bitfield */ + dscr &= ~bit_mask; + /* put new value */ + dscr |= value & bit_mask; + + /* write new DSCR */ + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, dscr); + return retval; +} + static struct target *get_aarch64(struct target *target, int32_t coreid) { struct target_list *head; @@ -305,9 +327,12 @@ static int aarch64_halt_smp(struct target *target) struct armv8_common *armv8 = target_to_armv8(curr); /* open the gate for channel 0 to let HALT requests pass to the CTM */ - if (curr->smp) + if (curr->smp) { retval = mem_ap_write_atomic_u32(armv8->debug_ap, armv8->cti_base + CTI_GATE, CTI_CHNL(0)); + if (retval == ERROR_OK) + retval = aarch64_set_dscr_bits(curr, DSCR_HDE, DSCR_HDE); + } if (retval != ERROR_OK) break; @@ -411,11 +436,7 @@ static int aarch64_halt(struct target *target) /* * add HDE in halting debug mode */ - retval = mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, &dscr); - if (retval == ERROR_OK) - retval = mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr | DSCR_HDE); + retval = aarch64_set_dscr_bits(target, DSCR_HDE, DSCR_HDE); if (retval != ERROR_OK) return retval; @@ -758,28 +779,6 @@ static int aarch64_post_debug_entry(struct target *target) return ERROR_OK; } -static int aarch64_set_dscr_bits(struct target *target, unsigned long bit_mask, unsigned long value) -{ - struct armv8_common *armv8 = target_to_armv8(target); - uint32_t dscr; - - /* Read DSCR */ - int retval = mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, &dscr); - if (ERROR_OK != retval) - return retval; - - /* clear bitfield */ - dscr &= ~bit_mask; - /* put new value */ - dscr |= value & bit_mask; - - /* write new DSCR */ - retval = mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); - return retval; -} - static int aarch64_step(struct target *target, int current, target_addr_t address, int handle_breakpoints) { |