HALT_SYNC,
};
+struct aarch64_private_config {
+ struct adiv5_private_config adiv5_config;
+ struct arm_cti *cti;
+};
+
static int aarch64_poll(struct target *target);
static int aarch64_debug_entry(struct target *target);
static int aarch64_restore_context(struct target *target, bool bpwp);
static int aarch64_mmu(struct target *target, int *enabled);
static int aarch64_virt2phys(struct target *target,
target_addr_t virt, target_addr_t *phys);
-static int aarch64_read_apb_ap_memory(struct target *target,
+static int aarch64_read_cpu_memory(struct target *target,
uint64_t address, uint32_t size, uint32_t count, uint8_t *buffer);
#define foreach_smp_target(pos, head) \
case ARMV8_64_EL3T:
instr = ARMV8_MSR_GP(SYSTEM_SCTLR_EL3, 0);
break;
+
+ case ARM_MODE_SVC:
+ case ARM_MODE_ABT:
+ case ARM_MODE_FIQ:
+ case ARM_MODE_IRQ:
+ instr = ARMV4_5_MCR(15, 0, 0, 1, 0, 0);
+ break;
+
default:
- LOG_DEBUG("unknown cpu state 0x%x" PRIx32, armv8->arm.core_state);
+ LOG_DEBUG("unknown cpu state 0x%" PRIx32, armv8->arm.core_mode);
break;
}
int retval;
uint32_t dummy;
- LOG_DEBUG(" ");
+ LOG_DEBUG("%s", target_name(target));
retval = mem_ap_write_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_OSLAR, 0);
struct target *curr;
if (debug_reason == DBG_REASON_NOTHALTED) {
- LOG_INFO("Halting remaining targets in SMP group");
+ LOG_DEBUG("Halting remaining targets in SMP group");
aarch64_halt_smp(target, true);
}
armv8->debug_base + CPUV8_DBG_DSCR, dscr);
}
- /* clear sticky bits in PRSR, SDR is now 0 */
- retval = mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_PRSR, &tmp);
+ if (retval == ERROR_OK) {
+ /* clear sticky bits in PRSR, SDR is now 0 */
+ retval = mem_ap_read_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_PRSR, &tmp);
+ }
return retval;
}
if (curr == target)
continue;
+ if (!target_was_examined(curr))
+ continue;
+
retval = aarch64_check_state_one(curr,
PRSR_SDR, PRSR_SDR, &resumed, &prsr);
if (retval != ERROR_OK || (!resumed && (prsr & PRSR_HALT))) {
int handle_breakpoints)
{
struct armv8_common *armv8 = target_to_armv8(target);
+ struct aarch64_common *aarch64 = target_to_aarch64(target);
int saved_retval = ERROR_OK;
int retval;
uint32_t edecr;
armv8->debug_base + CPUV8_DBG_EDECR, (edecr|0x4));
}
/* disable interrupts while stepping */
- if (retval == ERROR_OK)
+ if (retval == ERROR_OK && aarch64->isrmasking_mode == AARCH64_ISRMASK_ON)
retval = aarch64_set_dscr_bits(target, 0x3 << 22, 0x3 << 22);
/* bail out if stepping setup has failed */
if (retval != ERROR_OK)
return retval;
- if (target->smp && !handle_breakpoints) {
+ if (target->smp && (current == 1)) {
/*
* isolate current target so that it doesn't get resumed
* together with the others
if (retval != ERROR_OK || stepped)
break;
- if (timeval_ms() > then + 1000) {
+ if (timeval_ms() > then + 100) {
LOG_ERROR("timeout waiting for target %s halt after step",
target_name(target));
retval = ERROR_TARGET_TIMEOUT;
}
}
+ /*
+ * At least on one SoC (Renesas R8A7795) stepping over a WFI instruction
+ * causes a timeout. The core takes the step but doesn't complete it and so
+ * debug state is never entered. However, you can manually halt the core
+ * as an external debug even is also a WFI wakeup event.
+ */
if (retval == ERROR_TARGET_TIMEOUT)
- saved_retval = retval;
+ saved_retval = aarch64_halt_one(target, HALT_SYNC);
/* restore EDECR */
retval = mem_ap_write_atomic_u32(armv8->debug_ap,
return retval;
/* restore interrupts */
- retval = aarch64_set_dscr_bits(target, 0x3 << 22, 0);
- if (retval != ERROR_OK)
- return ERROR_OK;
+ if (aarch64->isrmasking_mode == AARCH64_ISRMASK_ON) {
+ retval = aarch64_set_dscr_bits(target, 0x3 << 22, 0);
+ if (retval != ERROR_OK)
+ return ERROR_OK;
+ }
if (saved_retval != ERROR_OK)
return saved_retval;
return aarch64_init_debug_access(target);
}
-static int aarch64_write_apb_ap_memory(struct target *target,
+static int aarch64_write_cpu_memory_slow(struct target *target,
+ uint32_t size, uint32_t count, const uint8_t *buffer, uint32_t *dscr)
+{
+ struct armv8_common *armv8 = target_to_armv8(target);
+ struct arm_dpm *dpm = &armv8->dpm;
+ struct arm *arm = &armv8->arm;
+ int retval;
+
+ armv8_reg_current(arm, 1)->dirty = true;
+
+ /* change DCC to normal mode if necessary */
+ if (*dscr & DSCR_MA) {
+ *dscr &= ~DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, *dscr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ while (count) {
+ uint32_t data, opcode;
+
+ /* write the data to store into DTRRX */
+ if (size == 1)
+ data = *buffer;
+ else if (size == 2)
+ data = target_buffer_get_u16(target, buffer);
+ else
+ data = target_buffer_get_u32(target, buffer);
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DTRRX, data);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (arm->core_state == ARM_STATE_AARCH64)
+ retval = dpm->instr_execute(dpm, ARMV8_MRS(SYSTEM_DBG_DTRRX_EL0, 1));
+ else
+ retval = dpm->instr_execute(dpm, ARMV4_5_MRC(14, 0, 1, 0, 5, 0));
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (size == 1)
+ opcode = armv8_opcode(armv8, ARMV8_OPC_STRB_IP);
+ else if (size == 2)
+ opcode = armv8_opcode(armv8, ARMV8_OPC_STRH_IP);
+ else
+ opcode = armv8_opcode(armv8, ARMV8_OPC_STRW_IP);
+ retval = dpm->instr_execute(dpm, opcode);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Advance */
+ buffer += size;
+ --count;
+ }
+
+ return ERROR_OK;
+}
+
+static int aarch64_write_cpu_memory_fast(struct target *target,
+ uint32_t count, const uint8_t *buffer, uint32_t *dscr)
+{
+ struct armv8_common *armv8 = target_to_armv8(target);
+ struct arm *arm = &armv8->arm;
+ int retval;
+
+ armv8_reg_current(arm, 1)->dirty = true;
+
+ /* Step 1.d - Change DCC to memory mode */
+ *dscr |= DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, *dscr);
+ if (retval != ERROR_OK)
+ return retval;
+
+
+ /* Step 2.a - Do the write */
+ retval = mem_ap_write_buf_noincr(armv8->debug_ap,
+ buffer, 4, count, armv8->debug_base + CPUV8_DBG_DTRRX);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Step 3.a - Switch DTR mode back to Normal mode */
+ *dscr &= ~DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, *dscr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int aarch64_write_cpu_memory(struct target *target,
uint64_t address, uint32_t size,
uint32_t count, const uint8_t *buffer)
{
struct armv8_common *armv8 = target_to_armv8(target);
struct arm_dpm *dpm = &armv8->dpm;
struct arm *arm = &armv8->arm;
- int total_bytes = count * size;
- int total_u32;
- int start_byte = address & 0x3;
- int end_byte = (address + total_bytes) & 0x3;
- struct reg *reg;
uint32_t dscr;
- uint8_t *tmp_buff = NULL;
if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- total_u32 = DIV_ROUND_UP((address & 3) + total_bytes, 4);
-
- /* Mark register R0 as dirty, as it will be used
+ /* Mark register X0 as dirty, as it will be used
* for transferring the data.
* It will be restored automatically when exiting
* debug mode
*/
- reg = armv8_reg_current(arm, 1);
- reg->dirty = true;
-
- reg = armv8_reg_current(arm, 0);
- reg->dirty = true;
+ armv8_reg_current(arm, 0)->dirty = true;
/* This algorithm comes from DDI0487A.g, chapter J9.1 */
- /* The algorithm only copies 32 bit words, so the buffer
- * should be expanded to include the words at either end.
- * The first and last words will be read first to avoid
- * corruption if needed.
- */
- tmp_buff = malloc(total_u32 * 4);
-
- if ((start_byte != 0) && (total_u32 > 1)) {
- /* First bytes not aligned - read the 32 bit word to avoid corrupting
- * the other bytes in the word.
- */
- retval = aarch64_read_apb_ap_memory(target, (address & ~0x3), 4, 1, tmp_buff);
- if (retval != ERROR_OK)
- goto error_free_buff_w;
- }
-
- /* If end of write is not aligned, or the write is less than 4 bytes */
- if ((end_byte != 0) ||
- ((total_u32 == 1) && (total_bytes != 4))) {
-
- /* Read the last word to avoid corruption during 32 bit write */
- int mem_offset = (total_u32-1) * 4;
- retval = aarch64_read_apb_ap_memory(target, (address & ~0x3) + mem_offset, 4, 1, &tmp_buff[mem_offset]);
- if (retval != ERROR_OK)
- goto error_free_buff_w;
- }
-
- /* Copy the write buffer over the top of the temporary buffer */
- memcpy(&tmp_buff[start_byte], buffer, total_bytes);
-
- /* We now have a 32 bit aligned buffer that can be written */
-
/* Read DSCR */
retval = mem_ap_read_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
if (retval != ERROR_OK)
- goto error_free_buff_w;
+ return retval;
/* Set Normal access mode */
dscr = (dscr & ~DSCR_MA);
retval = mem_ap_write_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, dscr);
+ if (retval != ERROR_OK)
+ return retval;
if (arm->core_state == ARM_STATE_AARCH64) {
/* Write X0 with value 'address' using write procedure */
/* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */
/* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */
retval = dpm->instr_write_data_dcc_64(dpm,
- ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address & ~0x3ULL);
+ ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address);
} else {
/* Write R0 with value 'address' using write procedure */
/* Step 1.a+b - Write the address for read access into DBGDTRRX */
/* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */
- dpm->instr_write_data_dcc(dpm,
- ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address & ~0x3ULL);
-
+ retval = dpm->instr_write_data_dcc(dpm,
+ ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address);
}
- /* Step 1.d - Change DCC to memory mode */
- dscr = dscr | DSCR_MA;
- retval += mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, dscr);
- if (retval != ERROR_OK)
- goto error_unset_dtr_w;
-
- /* Step 2.a - Do the write */
- retval = mem_ap_write_buf_noincr(armv8->debug_ap,
- tmp_buff, 4, total_u32, armv8->debug_base + CPUV8_DBG_DTRRX);
if (retval != ERROR_OK)
- goto error_unset_dtr_w;
+ return retval;
- /* Step 3.a - Switch DTR mode back to Normal mode */
- dscr = (dscr & ~DSCR_MA);
- retval = mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, dscr);
- if (retval != ERROR_OK)
- goto error_unset_dtr_w;
+ if (size == 4 && (address % 4) == 0)
+ retval = aarch64_write_cpu_memory_fast(target, count, buffer, &dscr);
+ else
+ retval = aarch64_write_cpu_memory_slow(target, size, count, buffer, &dscr);
+
+ if (retval != ERROR_OK) {
+ /* Unset DTR mode */
+ mem_ap_read_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
+ dscr &= ~DSCR_MA;
+ mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, dscr);
+ }
/* Check for sticky abort flags in the DSCR */
retval = mem_ap_read_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
if (retval != ERROR_OK)
- goto error_free_buff_w;
+ return retval;
dpm->dscr = dscr;
if (dscr & (DSCR_ERR | DSCR_SYS_ERROR_PEND)) {
/* Abort occurred - clear it and exit */
LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32, dscr);
- armv8_dpm_handle_exception(dpm);
- goto error_free_buff_w;
+ armv8_dpm_handle_exception(dpm, true);
+ return ERROR_FAIL;
}
/* Done */
- free(tmp_buff);
return ERROR_OK;
+}
-error_unset_dtr_w:
- /* Unset DTR mode */
- mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
- dscr = (dscr & ~DSCR_MA);
- mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, dscr);
-error_free_buff_w:
- LOG_ERROR("error");
- free(tmp_buff);
- return ERROR_FAIL;
+static int aarch64_read_cpu_memory_slow(struct target *target,
+ uint32_t size, uint32_t count, uint8_t *buffer, uint32_t *dscr)
+{
+ struct armv8_common *armv8 = target_to_armv8(target);
+ struct arm_dpm *dpm = &armv8->dpm;
+ struct arm *arm = &armv8->arm;
+ int retval;
+
+ armv8_reg_current(arm, 1)->dirty = true;
+
+ /* change DCC to normal mode (if necessary) */
+ if (*dscr & DSCR_MA) {
+ *dscr &= DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, *dscr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ while (count) {
+ uint32_t opcode, data;
+
+ if (size == 1)
+ opcode = armv8_opcode(armv8, ARMV8_OPC_LDRB_IP);
+ else if (size == 2)
+ opcode = armv8_opcode(armv8, ARMV8_OPC_LDRH_IP);
+ else
+ opcode = armv8_opcode(armv8, ARMV8_OPC_LDRW_IP);
+ retval = dpm->instr_execute(dpm, opcode);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (arm->core_state == ARM_STATE_AARCH64)
+ retval = dpm->instr_execute(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DTRTX_EL0, 1));
+ else
+ retval = dpm->instr_execute(dpm, ARMV4_5_MCR(14, 0, 1, 0, 5, 0));
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = mem_ap_read_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DTRTX, &data);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (size == 1)
+ *buffer = (uint8_t)data;
+ else if (size == 2)
+ target_buffer_set_u16(target, buffer, (uint16_t)data);
+ else
+ target_buffer_set_u32(target, buffer, data);
+
+ /* Advance */
+ buffer += size;
+ --count;
+ }
+
+ return ERROR_OK;
+}
+
+static int aarch64_read_cpu_memory_fast(struct target *target,
+ uint32_t count, uint8_t *buffer, uint32_t *dscr)
+{
+ struct armv8_common *armv8 = target_to_armv8(target);
+ struct arm_dpm *dpm = &armv8->dpm;
+ struct arm *arm = &armv8->arm;
+ int retval;
+ uint32_t value;
+
+ /* Mark X1 as dirty */
+ armv8_reg_current(arm, 1)->dirty = true;
+
+ if (arm->core_state == ARM_STATE_AARCH64) {
+ /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
+ retval = dpm->instr_execute(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, 0));
+ } else {
+ /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
+ retval = dpm->instr_execute(dpm, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
+ }
+
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Step 1.e - Change DCC to memory mode */
+ *dscr |= DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, *dscr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Step 1.f - read DBGDTRTX and discard the value */
+ retval = mem_ap_read_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DTRTX, &value);
+ if (retval != ERROR_OK)
+ return retval;
+
+ count--;
+ /* Read the data - Each read of the DTRTX register causes the instruction to be reissued
+ * Abort flags are sticky, so can be read at end of transactions
+ *
+ * This data is read in aligned to 32 bit boundary.
+ */
+
+ if (count) {
+ /* Step 2.a - Loop n-1 times, each read of DBGDTRTX reads the data from [X0] and
+ * increments X0 by 4. */
+ retval = mem_ap_read_buf_noincr(armv8->debug_ap, buffer, 4, count,
+ armv8->debug_base + CPUV8_DBG_DTRTX);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ /* Step 3.a - set DTR access mode back to Normal mode */
+ *dscr &= ~DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DSCR, *dscr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Step 3.b - read DBGDTRTX for the final value */
+ retval = mem_ap_read_atomic_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DTRTX, &value);
+ if (retval != ERROR_OK)
+ return retval;
+
+ target_buffer_set_u32(target, buffer + count * 4, value);
+ return retval;
}
-static int aarch64_read_apb_ap_memory(struct target *target,
+static int aarch64_read_cpu_memory(struct target *target,
target_addr_t address, uint32_t size,
uint32_t count, uint8_t *buffer)
{
struct armv8_common *armv8 = target_to_armv8(target);
struct arm_dpm *dpm = &armv8->dpm;
struct arm *arm = &armv8->arm;
- int total_bytes = count * size;
- int total_u32;
- int start_byte = address & 0x3;
- int end_byte = (address + total_bytes) & 0x3;
- struct reg *reg;
uint32_t dscr;
- uint8_t *tmp_buff = NULL;
- uint8_t *u8buf_ptr;
- uint32_t value;
+
+ LOG_DEBUG("Reading CPU memory address 0x%016" PRIx64 " size %" PRIu32 " count %" PRIu32,
+ address, size, count);
if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- total_u32 = DIV_ROUND_UP((address & 3) + total_bytes, 4);
- /* Mark register X0, X1 as dirty, as it will be used
+ /* Mark register X0 as dirty, as it will be used
* for transferring the data.
* It will be restored automatically when exiting
* debug mode
*/
- reg = armv8_reg_current(arm, 1);
- reg->dirty = true;
-
- reg = armv8_reg_current(arm, 0);
- reg->dirty = true;
+ armv8_reg_current(arm, 0)->dirty = true;
/* Read DSCR */
retval = mem_ap_read_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
+ if (retval != ERROR_OK)
+ return retval;
/* This algorithm comes from DDI0487A.g, chapter J9.1 */
/* Set Normal access mode */
- dscr = (dscr & ~DSCR_MA);
- retval += mem_ap_write_atomic_u32(armv8->debug_ap,
+ dscr &= ~DSCR_MA;
+ retval = mem_ap_write_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, dscr);
+ if (retval != ERROR_OK)
+ return retval;
if (arm->core_state == ARM_STATE_AARCH64) {
/* Write X0 with value 'address' using write procedure */
/* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */
/* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */
- retval += dpm->instr_write_data_dcc_64(dpm,
- ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address & ~0x3ULL);
- /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
- retval += dpm->instr_execute(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, 0));
- /* Step 1.e - Change DCC to memory mode */
- dscr = dscr | DSCR_MA;
- retval += mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, dscr);
- /* Step 1.f - read DBGDTRTX and discard the value */
- retval += mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DTRTX, &value);
+ retval = dpm->instr_write_data_dcc_64(dpm,
+ ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address);
} else {
/* Write R0 with value 'address' using write procedure */
/* Step 1.a+b - Write the address for read access into DBGDTRRXint */
/* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */
- retval += dpm->instr_write_data_dcc(dpm,
- ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address & ~0x3ULL);
- /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
- retval += dpm->instr_execute(dpm, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
- /* Step 1.e - Change DCC to memory mode */
- dscr = dscr | DSCR_MA;
- retval += mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, dscr);
- /* Step 1.f - read DBGDTRTX and discard the value */
- retval += mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DTRTX, &value);
-
+ retval = dpm->instr_write_data_dcc(dpm,
+ ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address);
}
- if (retval != ERROR_OK)
- goto error_unset_dtr_r;
-
- /* Optimize the read as much as we can, either way we read in a single pass */
- if ((start_byte) || (end_byte)) {
- /* The algorithm only copies 32 bit words, so the buffer
- * should be expanded to include the words at either end.
- * The first and last words will be read into a temp buffer
- * to avoid corruption
- */
- tmp_buff = malloc(total_u32 * 4);
- if (!tmp_buff)
- goto error_unset_dtr_r;
-
- /* use the tmp buffer to read the entire data */
- u8buf_ptr = tmp_buff;
- } else
- /* address and read length are aligned so read directly into the passed buffer */
- u8buf_ptr = buffer;
-
- /* Read the data - Each read of the DTRTX register causes the instruction to be reissued
- * Abort flags are sticky, so can be read at end of transactions
- *
- * This data is read in aligned to 32 bit boundary.
- */
- /* Step 2.a - Loop n-1 times, each read of DBGDTRTX reads the data from [X0] and
- * increments X0 by 4. */
- retval = mem_ap_read_buf_noincr(armv8->debug_ap, u8buf_ptr, 4, total_u32-1,
- armv8->debug_base + CPUV8_DBG_DTRTX);
if (retval != ERROR_OK)
- goto error_unset_dtr_r;
+ return retval;
- /* Step 3.a - set DTR access mode back to Normal mode */
- dscr = (dscr & ~DSCR_MA);
- retval = mem_ap_write_atomic_u32(armv8->debug_ap,
+ if (size == 4 && (address % 4) == 0)
+ retval = aarch64_read_cpu_memory_fast(target, count, buffer, &dscr);
+ else
+ retval = aarch64_read_cpu_memory_slow(target, size, count, buffer, &dscr);
+
+ if (dscr & DSCR_MA) {
+ dscr &= ~DSCR_MA;
+ mem_ap_write_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, dscr);
- if (retval != ERROR_OK)
- goto error_free_buff_r;
+ }
- /* Step 3.b - read DBGDTRTX for the final value */
- retval = mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DTRTX, &value);
- memcpy(u8buf_ptr + (total_u32-1) * 4, &value, 4);
+ if (retval != ERROR_OK)
+ return retval;
/* Check for sticky abort flags in the DSCR */
retval = mem_ap_read_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
if (retval != ERROR_OK)
- goto error_free_buff_r;
+ return retval;
dpm->dscr = dscr;
if (dscr & (DSCR_ERR | DSCR_SYS_ERROR_PEND)) {
/* Abort occurred - clear it and exit */
LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32, dscr);
- armv8_dpm_handle_exception(dpm);
- goto error_free_buff_r;
- }
-
- /* check if we need to copy aligned data by applying any shift necessary */
- if (tmp_buff) {
- memcpy(buffer, tmp_buff + start_byte, total_bytes);
- free(tmp_buff);
+ armv8_dpm_handle_exception(dpm, true);
+ return ERROR_FAIL;
}
/* Done */
return ERROR_OK;
-
-error_unset_dtr_r:
- /* Unset DTR mode */
- mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, &dscr);
- dscr = (dscr & ~DSCR_MA);
- mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DSCR, dscr);
-error_free_buff_r:
- LOG_ERROR("error");
- free(tmp_buff);
- return ERROR_FAIL;
}
static int aarch64_read_phys_memory(struct target *target,
retval = aarch64_mmu_modify(target, 0);
if (retval != ERROR_OK)
return retval;
- retval = aarch64_read_apb_ap_memory(target, address, size, count, buffer);
+ retval = aarch64_read_cpu_memory(target, address, size, count, buffer);
}
return retval;
}
if (retval != ERROR_OK)
return retval;
}
- return aarch64_read_apb_ap_memory(target, address, size, count, buffer);
+ return aarch64_read_cpu_memory(target, address, size, count, buffer);
}
static int aarch64_write_phys_memory(struct target *target,
retval = aarch64_mmu_modify(target, 0);
if (retval != ERROR_OK)
return retval;
- return aarch64_write_apb_ap_memory(target, address, size, count, buffer);
+ return aarch64_write_cpu_memory(target, address, size, count, buffer);
}
return retval;
if (retval != ERROR_OK)
return retval;
}
- return aarch64_write_apb_ap_memory(target, address, size, count, buffer);
+ return aarch64_write_cpu_memory(target, address, size, count, buffer);
}
static int aarch64_handle_target_request(void *priv)
struct aarch64_common *aarch64 = target_to_aarch64(target);
struct armv8_common *armv8 = &aarch64->armv8_common;
struct adiv5_dap *swjdp = armv8->arm.dap;
- uint32_t cti_base;
+ struct aarch64_private_config *pc;
int i;
int retval = ERROR_OK;
uint64_t debug, ttypr;
uint32_t cpuid;
- uint32_t tmp0, tmp1;
+ uint32_t tmp0, tmp1, tmp2, tmp3;
debug = ttypr = cpuid = 0;
- retval = dap_dp_init(swjdp);
- if (retval != ERROR_OK)
- return retval;
-
/* Search for the APB-AB - it is needed for access to debug registers */
retval = dap_find_ap(swjdp, AP_TYPE_APB_AP, &armv8->debug_ap);
if (retval != ERROR_OK) {
} else
armv8->debug_base = target->dbgbase;
- uint32_t prsr;
- int64_t then = timeval_ms();
- do {
- retval = mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_PRSR, &prsr);
- if (retval == ERROR_OK) {
- retval = mem_ap_write_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_PRCR, PRCR_COREPURQ|PRCR_CORENPDRQ);
- if (retval != ERROR_OK) {
- LOG_DEBUG("write to PRCR failed");
- break;
- }
- }
-
- if (timeval_ms() > then + 1000) {
- retval = ERROR_TARGET_TIMEOUT;
- break;
- }
-
- } while ((prsr & PRSR_PU) == 0);
-
- if (retval != ERROR_OK) {
- LOG_ERROR("target %s: failed to set power state of the core.", target_name(target));
- return retval;
- }
-
retval = mem_ap_write_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_OSLAR, 0);
if (retval != ERROR_OK) {
return retval;
}
- retval = mem_ap_read_atomic_u32(armv8->debug_ap,
+ retval = mem_ap_read_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_MAINID0, &cpuid);
if (retval != ERROR_OK) {
LOG_DEBUG("Examine %s failed", "CPUID");
return retval;
}
- retval = mem_ap_read_atomic_u32(armv8->debug_ap,
+ retval = mem_ap_read_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_MEMFEATURE0, &tmp0);
- retval += mem_ap_read_atomic_u32(armv8->debug_ap,
+ retval += mem_ap_read_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_MEMFEATURE0 + 4, &tmp1);
if (retval != ERROR_OK) {
LOG_DEBUG("Examine %s failed", "Memory Model Type");
return retval;
}
- ttypr |= tmp1;
- ttypr = (ttypr << 32) | tmp0;
-
- retval = mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DBGFEATURE0, &tmp0);
- retval += mem_ap_read_atomic_u32(armv8->debug_ap,
- armv8->debug_base + CPUV8_DBG_DBGFEATURE0 + 4, &tmp1);
+ retval = mem_ap_read_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DBGFEATURE0, &tmp2);
+ retval += mem_ap_read_u32(armv8->debug_ap,
+ armv8->debug_base + CPUV8_DBG_DBGFEATURE0 + 4, &tmp3);
if (retval != ERROR_OK) {
LOG_DEBUG("Examine %s failed", "ID_AA64DFR0_EL1");
return retval;
}
- debug |= tmp1;
- debug = (debug << 32) | tmp0;
+
+ retval = dap_run(armv8->debug_ap->dap);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("%s: examination failed\n", target_name(target));
+ return retval;
+ }
+
+ ttypr |= tmp1;
+ ttypr = (ttypr << 32) | tmp0;
+ debug |= tmp3;
+ debug = (debug << 32) | tmp2;
LOG_DEBUG("cpuid = 0x%08" PRIx32, cpuid);
LOG_DEBUG("ttypr = 0x%08" PRIx64, ttypr);
LOG_DEBUG("debug = 0x%08" PRIx64, debug);
- if (target->ctibase == 0) {
- /* assume a v8 rom table layout */
- cti_base = armv8->debug_base + 0x10000;
- LOG_INFO("Target ctibase is not set, assuming 0x%0" PRIx32, cti_base);
- } else
- cti_base = target->ctibase;
+ if (target->private_config == NULL)
+ return ERROR_FAIL;
- armv8->cti = arm_cti_create(armv8->debug_ap, cti_base);
- if (armv8->cti == NULL)
+ pc = (struct aarch64_private_config *)target->private_config;
+ if (pc->cti == NULL)
return ERROR_FAIL;
+ armv8->cti = pc->cti;
+
retval = aarch64_dpm_setup(aarch64, debug);
if (retval != ERROR_OK)
return retval;
LOG_DEBUG("Configured %i hw breakpoints", aarch64->brp_num);
- target->state = TARGET_RUNNING;
+ target->state = TARGET_UNKNOWN;
target->debug_reason = DBG_REASON_NOTHALTED;
-
+ aarch64->isrmasking_mode = AARCH64_ISRMASK_ON;
target_set_examined(target);
return ERROR_OK;
}
}
static int aarch64_init_arch_info(struct target *target,
- struct aarch64_common *aarch64, struct jtag_tap *tap)
+ struct aarch64_common *aarch64, struct adiv5_dap *dap)
{
struct armv8_common *armv8 = &aarch64->armv8_common;
/* Setup struct aarch64_common */
aarch64->common_magic = AARCH64_COMMON_MAGIC;
- /* tap has no dap initialized */
- if (!tap->dap) {
- tap->dap = dap_init();
- tap->dap->tap = tap;
- }
- armv8->arm.dap = tap->dap;
+ armv8->arm.dap = dap;
/* register arch-specific functions */
armv8->examine_debug_reason = NULL;
static int aarch64_target_create(struct target *target, Jim_Interp *interp)
{
+ struct aarch64_private_config *pc = target->private_config;
struct aarch64_common *aarch64 = calloc(1, sizeof(struct aarch64_common));
- return aarch64_init_arch_info(target, aarch64, target->tap);
+ if (adiv5_verify_config(&pc->adiv5_config) != ERROR_OK)
+ return ERROR_FAIL;
+
+ return aarch64_init_arch_info(target, aarch64, pc->adiv5_config.dap);
+}
+
+static void aarch64_deinit_target(struct target *target)
+{
+ struct aarch64_common *aarch64 = target_to_aarch64(target);
+ struct armv8_common *armv8 = &aarch64->armv8_common;
+ struct arm_dpm *dpm = &armv8->dpm;
+
+ armv8_free_reg_cache(target);
+ free(aarch64->brp_list);
+ free(dpm->dbp);
+ free(dpm->dwp);
+ free(target->private_config);
+ free(aarch64);
}
static int aarch64_mmu(struct target *target, int *enabled)
return armv8_mmu_translate_va_pa(target, virt, phys, 1);
}
+/*
+ * private target configuration items
+ */
+enum aarch64_cfg_param {
+ CFG_CTI,
+};
+
+static const Jim_Nvp nvp_config_opts[] = {
+ { .name = "-cti", .value = CFG_CTI },
+ { .name = NULL, .value = -1 }
+};
+
+static int aarch64_jim_configure(struct target *target, Jim_GetOptInfo *goi)
+{
+ struct aarch64_private_config *pc;
+ Jim_Nvp *n;
+ int e;
+
+ pc = (struct aarch64_private_config *)target->private_config;
+ if (pc == NULL) {
+ pc = calloc(1, sizeof(struct aarch64_private_config));
+ target->private_config = pc;
+ }
+
+ /*
+ * Call adiv5_jim_configure() to parse the common DAP options
+ * It will return JIM_CONTINUE if it didn't find any known
+ * options, JIM_OK if it correctly parsed the topmost option
+ * and JIM_ERR if an error occured during parameter evaluation.
+ * For JIM_CONTINUE, we check our own params.
+ */
+ e = adiv5_jim_configure(target, goi);
+ if (e != JIM_CONTINUE)
+ return e;
+
+ /* parse config or cget options ... */
+ if (goi->argc > 0) {
+ Jim_SetEmptyResult(goi->interp);
+
+ /* check first if topmost item is for us */
+ e = Jim_Nvp_name2value_obj(goi->interp, nvp_config_opts,
+ goi->argv[0], &n);
+ if (e != JIM_OK)
+ return JIM_CONTINUE;
+
+ e = Jim_GetOpt_Obj(goi, NULL);
+ if (e != JIM_OK)
+ return e;
+
+ switch (n->value) {
+ case CFG_CTI: {
+ if (goi->isconfigure) {
+ Jim_Obj *o_cti;
+ struct arm_cti *cti;
+ e = Jim_GetOpt_Obj(goi, &o_cti);
+ if (e != JIM_OK)
+ return e;
+ cti = cti_instance_by_jim_obj(goi->interp, o_cti);
+ if (cti == NULL) {
+ Jim_SetResultString(goi->interp, "CTI name invalid!", -1);
+ return JIM_ERR;
+ }
+ pc->cti = cti;
+ } else {
+ if (goi->argc != 0) {
+ Jim_WrongNumArgs(goi->interp,
+ goi->argc, goi->argv,
+ "NO PARAMS");
+ return JIM_ERR;
+ }
+
+ if (pc == NULL || pc->cti == NULL) {
+ Jim_SetResultString(goi->interp, "CTI not configured", -1);
+ return JIM_ERR;
+ }
+ Jim_SetResultString(goi->interp, arm_cti_name(pc->cti), -1);
+ }
+ break;
+ }
+
+ default:
+ return JIM_CONTINUE;
+ }
+ }
+
+ return JIM_OK;
+}
+
COMMAND_HANDLER(aarch64_handle_cache_info_command)
{
struct target *target = get_current_target(CMD_CTX);
return ERROR_OK;
}
+COMMAND_HANDLER(aarch64_mask_interrupts_command)
+{
+ struct target *target = get_current_target(CMD_CTX);
+ struct aarch64_common *aarch64 = target_to_aarch64(target);
+
+ static const Jim_Nvp nvp_maskisr_modes[] = {
+ { .name = "off", .value = AARCH64_ISRMASK_OFF },
+ { .name = "on", .value = AARCH64_ISRMASK_ON },
+ { .name = NULL, .value = -1 },
+ };
+ const Jim_Nvp *n;
+
+ if (CMD_ARGC > 0) {
+ n = Jim_Nvp_name2value_simple(nvp_maskisr_modes, CMD_ARGV[0]);
+ if (n->name == NULL) {
+ LOG_ERROR("Unknown parameter: %s - should be off or on", CMD_ARGV[0]);
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ aarch64->isrmasking_mode = n->value;
+ }
+
+ n = Jim_Nvp_value2name_simple(nvp_maskisr_modes, aarch64->isrmasking_mode);
+ command_print(CMD_CTX, "aarch64 interrupt mask %s", n->name);
+
+ return ERROR_OK;
+}
+
+static int jim_mcrmrc(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
+{
+ struct command_context *context;
+ struct target *target;
+ struct arm *arm;
+ int retval;
+ bool is_mcr = false;
+ int arg_cnt = 0;
+
+ if (Jim_CompareStringImmediate(interp, argv[0], "mcr")) {
+ is_mcr = true;
+ arg_cnt = 7;
+ } else {
+ arg_cnt = 6;
+ }
+
+ context = current_command_context(interp);
+ assert(context != NULL);
+
+ target = get_current_target(context);
+ if (target == NULL) {
+ LOG_ERROR("%s: no current target", __func__);
+ return JIM_ERR;
+ }
+ if (!target_was_examined(target)) {
+ LOG_ERROR("%s: not yet examined", target_name(target));
+ return JIM_ERR;
+ }
+
+ arm = target_to_arm(target);
+ if (!is_arm(arm)) {
+ LOG_ERROR("%s: not an ARM", target_name(target));
+ return JIM_ERR;
+ }
+
+ if (target->state != TARGET_HALTED)
+ return ERROR_TARGET_NOT_HALTED;
+
+ if (arm->core_state == ARM_STATE_AARCH64) {
+ LOG_ERROR("%s: not 32-bit arm target", target_name(target));
+ return JIM_ERR;
+ }
+
+ if (argc != arg_cnt) {
+ LOG_ERROR("%s: wrong number of arguments", __func__);
+ return JIM_ERR;
+ }
+
+ int cpnum;
+ uint32_t op1;
+ uint32_t op2;
+ uint32_t CRn;
+ uint32_t CRm;
+ uint32_t value;
+ long l;
+
+ /* NOTE: parameter sequence matches ARM instruction set usage:
+ * MCR pNUM, op1, rX, CRn, CRm, op2 ; write CP from rX
+ * MRC pNUM, op1, rX, CRn, CRm, op2 ; read CP into rX
+ * The "rX" is necessarily omitted; it uses Tcl mechanisms.
+ */
+ retval = Jim_GetLong(interp, argv[1], &l);
+ if (retval != JIM_OK)
+ return retval;
+ if (l & ~0xf) {
+ LOG_ERROR("%s: %s %d out of range", __func__,
+ "coprocessor", (int) l);
+ return JIM_ERR;
+ }
+ cpnum = l;
+
+ retval = Jim_GetLong(interp, argv[2], &l);
+ if (retval != JIM_OK)
+ return retval;
+ if (l & ~0x7) {
+ LOG_ERROR("%s: %s %d out of range", __func__,
+ "op1", (int) l);
+ return JIM_ERR;
+ }
+ op1 = l;
+
+ retval = Jim_GetLong(interp, argv[3], &l);
+ if (retval != JIM_OK)
+ return retval;
+ if (l & ~0xf) {
+ LOG_ERROR("%s: %s %d out of range", __func__,
+ "CRn", (int) l);
+ return JIM_ERR;
+ }
+ CRn = l;
+
+ retval = Jim_GetLong(interp, argv[4], &l);
+ if (retval != JIM_OK)
+ return retval;
+ if (l & ~0xf) {
+ LOG_ERROR("%s: %s %d out of range", __func__,
+ "CRm", (int) l);
+ return JIM_ERR;
+ }
+ CRm = l;
+
+ retval = Jim_GetLong(interp, argv[5], &l);
+ if (retval != JIM_OK)
+ return retval;
+ if (l & ~0x7) {
+ LOG_ERROR("%s: %s %d out of range", __func__,
+ "op2", (int) l);
+ return JIM_ERR;
+ }
+ op2 = l;
+
+ value = 0;
+
+ if (is_mcr == true) {
+ retval = Jim_GetLong(interp, argv[6], &l);
+ if (retval != JIM_OK)
+ return retval;
+ value = l;
+
+ /* NOTE: parameters reordered! */
+ /* ARMV4_5_MCR(cpnum, op1, 0, CRn, CRm, op2) */
+ retval = arm->mcr(target, cpnum, op1, op2, CRn, CRm, value);
+ if (retval != ERROR_OK)
+ return JIM_ERR;
+ } else {
+ /* NOTE: parameters reordered! */
+ /* ARMV4_5_MRC(cpnum, op1, 0, CRn, CRm, op2) */
+ retval = arm->mrc(target, cpnum, op1, op2, CRn, CRm, &value);
+ if (retval != ERROR_OK)
+ return JIM_ERR;
+
+ Jim_SetResult(interp, Jim_NewIntObj(interp, value));
+ }
+
+ return JIM_OK;
+}
+
static const struct command_registration aarch64_exec_command_handlers[] = {
{
.name = "cache_info",
.help = "Restart smp handling",
.usage = "",
},
+ {
+ .name = "maskisr",
+ .handler = aarch64_mask_interrupts_command,
+ .mode = COMMAND_ANY,
+ .help = "mask aarch64 interrupts during single-step",
+ .usage = "['on'|'off']",
+ },
+ {
+ .name = "mcr",
+ .mode = COMMAND_EXEC,
+ .jim_handler = jim_mcrmrc,
+ .help = "write coprocessor register",
+ .usage = "cpnum op1 CRn CRm op2 value",
+ },
+ {
+ .name = "mrc",
+ .mode = COMMAND_EXEC,
+ .jim_handler = jim_mcrmrc,
+ .help = "read coprocessor register",
+ .usage = "cpnum op1 CRn CRm op2",
+ },
+
COMMAND_REGISTRATION_DONE
};
+
static const struct command_registration aarch64_command_handlers[] = {
{
.chain = armv8_command_handlers,
.commands = aarch64_command_handlers,
.target_create = aarch64_target_create,
+ .target_jim_configure = aarch64_jim_configure,
.init_target = aarch64_init_target,
+ .deinit_target = aarch64_deinit_target,
.examine = aarch64_examine,
.read_phys_memory = aarch64_read_phys_memory,
projects / fw / openocd / blobdiff