struct breakpoint *breakpoint);
static int cortex_a_unset_breakpoint(struct target *target,
struct breakpoint *breakpoint);
-static int cortex_a_dap_read_coreregister_u32(struct target *target,
- uint32_t *value, int regnum);
-static int cortex_a_dap_write_coreregister_u32(struct target *target,
- uint32_t value, int regnum);
static int cortex_a_mmu(struct target *target, int *enabled);
static int cortex_a_mmu_modify(struct target *target, int enable);
static int cortex_a_virt2phys(struct target *target,
int mmu_enabled = 0;
if (phys_access == 0) {
- dpm_modeswitch(&armv7a->dpm, ARM_MODE_SVC);
+ arm_dpm_modeswitch(&armv7a->dpm, ARM_MODE_SVC);
cortex_a_mmu(target, &mmu_enabled);
if (mmu_enabled)
cortex_a_mmu_modify(target, 1);
0, 0, 3, 0,
cortex_a->cp15_dacr_reg);
}
- dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
+ arm_dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
} else {
int mmu_enabled = 0;
cortex_a_mmu(target, &mmu_enabled);
return retval;
}
-/**************************************************************************
-Read core register with very few exec_opcode, fast but needs work_area.
-This can cause problems with MMU active.
-**************************************************************************/
-static int cortex_a_read_regs_through_mem(struct target *target, uint32_t address,
- uint32_t *regfile)
-{
- int retval = ERROR_OK;
- struct armv7a_common *armv7a = target_to_armv7a(target);
-
- retval = cortex_a_dap_read_coreregister_u32(target, regfile, 0);
- if (retval != ERROR_OK)
- return retval;
- retval = cortex_a_dap_write_coreregister_u32(target, address, 0);
- if (retval != ERROR_OK)
- return retval;
- retval = cortex_a_exec_opcode(target, ARMV4_5_STMIA(0, 0xFFFE, 0, 0), NULL);
- if (retval != ERROR_OK)
- return retval;
-
- retval = mem_ap_read_buf(armv7a->memory_ap,
- (uint8_t *)(®file[1]), 4, 15, address);
-
- return retval;
-}
-
-static int cortex_a_dap_read_coreregister_u32(struct target *target,
- uint32_t *value, int regnum)
-{
- int retval = ERROR_OK;
- uint8_t reg = regnum&0xFF;
- uint32_t dscr = 0;
- struct armv7a_common *armv7a = target_to_armv7a(target);
-
- if (reg > 17)
- return retval;
-
- if (reg < 15) {
- /* Rn to DCCTX, "MCR p14, 0, Rn, c0, c5, 0" 0xEE00nE15 */
- retval = cortex_a_exec_opcode(target,
- ARMV4_5_MCR(14, 0, reg, 0, 5, 0),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- } else if (reg == 15) {
- /* "MOV r0, r15"; then move r0 to DCCTX */
- retval = cortex_a_exec_opcode(target, 0xE1A0000F, &dscr);
- if (retval != ERROR_OK)
- return retval;
- retval = cortex_a_exec_opcode(target,
- ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- } else {
- /* "MRS r0, CPSR" or "MRS r0, SPSR"
- * then move r0 to DCCTX
- */
- retval = cortex_a_exec_opcode(target, ARMV4_5_MRS(0, reg & 1), &dscr);
- if (retval != ERROR_OK)
- return retval;
- retval = cortex_a_exec_opcode(target,
- ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- }
-
- /* Wait for DTRRXfull then read DTRRTX */
- int64_t then = timeval_ms();
- while ((dscr & DSCR_DTR_TX_FULL) == 0) {
- retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_DSCR, &dscr);
- if (retval != ERROR_OK)
- return retval;
- if (timeval_ms() > then + 1000) {
- LOG_ERROR("Timeout waiting for cortex_a_exec_opcode");
- return ERROR_FAIL;
- }
- }
-
- retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_DTRTX, value);
- LOG_DEBUG("read DCC 0x%08" PRIx32, *value);
-
- return retval;
-}
-
-static int cortex_a_dap_write_coreregister_u32(struct target *target,
- uint32_t value, int regnum)
-{
- int retval = ERROR_OK;
- uint8_t Rd = regnum&0xFF;
- uint32_t dscr;
- struct armv7a_common *armv7a = target_to_armv7a(target);
-
- LOG_DEBUG("register %i, value 0x%08" PRIx32, regnum, value);
-
- /* Check that DCCRX is not full */
- retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_DSCR, &dscr);
- if (retval != ERROR_OK)
- return retval;
- if (dscr & DSCR_DTR_RX_FULL) {
- LOG_ERROR("DSCR_DTR_RX_FULL, dscr 0x%08" PRIx32, dscr);
- /* Clear DCCRX with MRC(p14, 0, Rd, c0, c5, 0), opcode 0xEE100E15 */
- retval = cortex_a_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (Rd > 17)
- return retval;
-
- /* Write DTRRX ... sets DSCR.DTRRXfull but exec_opcode() won't care */
- LOG_DEBUG("write DCC 0x%08" PRIx32, value);
- retval = mem_ap_write_u32(armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_DTRRX, value);
- if (retval != ERROR_OK)
- return retval;
-
- if (Rd < 15) {
- /* DCCRX to Rn, "MRC p14, 0, Rn, c0, c5, 0", 0xEE10nE15 */
- retval = cortex_a_exec_opcode(target, ARMV4_5_MRC(14, 0, Rd, 0, 5, 0),
- &dscr);
-
- if (retval != ERROR_OK)
- return retval;
- } else if (Rd == 15) {
- /* DCCRX to R0, "MRC p14, 0, R0, c0, c5, 0", 0xEE100E15
- * then "mov r15, r0"
- */
- retval = cortex_a_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- retval = cortex_a_exec_opcode(target, 0xE1A0F000, &dscr);
- if (retval != ERROR_OK)
- return retval;
- } else {
- /* DCCRX to R0, "MRC p14, 0, R0, c0, c5, 0", 0xEE100E15
- * then "MSR CPSR_cxsf, r0" or "MSR SPSR_cxsf, r0" (all fields)
- */
- retval = cortex_a_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- retval = cortex_a_exec_opcode(target, ARMV4_5_MSR_GP(0, 0xF, Rd & 1),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
-
- /* "Prefetch flush" after modifying execution status in CPSR */
- if (Rd == 16) {
- retval = cortex_a_exec_opcode(target,
- ARMV4_5_MCR(15, 0, 0, 7, 5, 4),
- &dscr);
- if (retval != ERROR_OK)
- return retval;
- }
- }
-
- return retval;
-}
-
/* Write to memory mapped registers directly with no cache or mmu handling */
static int cortex_a_dap_write_memap_register_u32(struct target *target,
uint32_t address,
arm->pc->valid = 1;
/* restore dpm_mode at system halt */
- dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
+ arm_dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
/* called it now before restoring context because it uses cpu
* register r0 for restoring cp15 control register */
retval = cortex_a_restore_cp15_control_reg(target);
static int cortex_a_debug_entry(struct target *target)
{
- int i;
- uint32_t regfile[16], cpsr, spsr, dscr;
+ uint32_t dscr;
int retval = ERROR_OK;
- struct working_area *regfile_working_area = NULL;
struct cortex_a_common *cortex_a = target_to_cortex_a(target);
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm *arm = &armv7a->arm;
- struct reg *reg;
LOG_DEBUG("dscr = 0x%08" PRIx32, cortex_a->cpudbg_dscr);
arm_dpm_report_wfar(&armv7a->dpm, wfar);
}
- /* REVISIT fast_reg_read is never set ... */
-
- /* Examine target state and mode */
- if (cortex_a->fast_reg_read)
- target_alloc_working_area(target, 64, ®file_working_area);
-
-
- /* First load register acessible through core debug port*/
- if (!regfile_working_area)
- retval = arm_dpm_read_current_registers(&armv7a->dpm);
- else {
- retval = cortex_a_read_regs_through_mem(target,
- regfile_working_area->address, regfile);
-
- target_free_working_area(target, regfile_working_area);
- if (retval != ERROR_OK)
- return retval;
-
- /* read Current PSR */
- retval = cortex_a_dap_read_coreregister_u32(target, &cpsr, 16);
- /* store current cpsr */
- if (retval != ERROR_OK)
- return retval;
-
- LOG_DEBUG("cpsr: %8.8" PRIx32, cpsr);
-
- arm_set_cpsr(arm, cpsr);
-
- /* update cache */
- for (i = 0; i <= ARM_PC; i++) {
- reg = arm_reg_current(arm, i);
-
- buf_set_u32(reg->value, 0, 32, regfile[i]);
- reg->valid = 1;
- reg->dirty = 0;
- }
-
- /* Fixup PC Resume Address */
- if (cpsr & (1 << 5)) {
- /* T bit set for Thumb or ThumbEE state */
- regfile[ARM_PC] -= 4;
- } else {
- /* ARM state */
- regfile[ARM_PC] -= 8;
- }
-
- reg = arm->pc;
- buf_set_u32(reg->value, 0, 32, regfile[ARM_PC]);
- reg->dirty = reg->valid;
- }
+ /* First load register accessible through core debug port */
+ retval = arm_dpm_read_current_registers(&armv7a->dpm);
+ if (retval != ERROR_OK)
+ return retval;
if (arm->spsr) {
- /* read Saved PSR */
- retval = cortex_a_dap_read_coreregister_u32(target, &spsr, 17);
- /* store current spsr */
+ /* read SPSR */
+ retval = arm_dpm_read_reg(&armv7a->dpm, arm->spsr, 17);
if (retval != ERROR_OK)
return retval;
-
- reg = arm->spsr;
- buf_set_u32(reg->value, 0, 32, spsr);
- reg->valid = 1;
- reg->dirty = 0;
}
#if 0
cortex_a->curr_mode = armv7a->arm.core_mode;
/* switch to SVC mode to read DACR */
- dpm_modeswitch(&armv7a->dpm, ARM_MODE_SVC);
+ arm_dpm_modeswitch(&armv7a->dpm, ARM_MODE_SVC);
armv7a->arm.mrc(target, 15,
0, 0, 3, 0,
&cortex_a->cp15_dacr_reg);
LOG_DEBUG("cp15_dacr_reg: %8.8" PRIx32,
cortex_a->cp15_dacr_reg);
- dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
+ arm_dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
return ERROR_OK;
}
/* Setup single step breakpoint */
stepbreakpoint.address = address;
+ stepbreakpoint.asid = 0;
stepbreakpoint.length = (arm->core_state == ARM_STATE_THUMB)
? 2 : 4;
stepbreakpoint.type = BKPT_HARD;
target_addr_t address, uint32_t size,
uint32_t count, uint8_t *buffer)
{
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- uint8_t apsel = swjdp->apsel;
int retval;
if (!count || !buffer)
LOG_DEBUG("Reading memory at real address " TARGET_ADDR_FMT "; size %" PRId32 "; count %" PRId32,
address, size, count);
- if (armv7a->memory_ap_available && (apsel == armv7a->memory_ap->ap_num))
- return mem_ap_read_buf(armv7a->memory_ap, buffer, size, count, address);
-
/* read memory through the CPU */
cortex_a_prep_memaccess(target, 1);
retval = cortex_a_read_cpu_memory(target, address, size, count, buffer);
return retval;
}
-static int cortex_a_read_memory_ahb(struct target *target, target_addr_t address,
- uint32_t size, uint32_t count, uint8_t *buffer)
-{
- int mmu_enabled = 0;
- target_addr_t virt, phys;
- int retval;
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- uint8_t apsel = swjdp->apsel;
-
- if (!armv7a->memory_ap_available || (apsel != armv7a->memory_ap->ap_num))
- return target_read_memory(target, address, size, count, buffer);
-
- /* cortex_a handles unaligned memory access */
- LOG_DEBUG("Reading memory at address " TARGET_ADDR_FMT "; size %" PRId32 "; count %" PRId32,
- address, size, count);
-
- /* determine if MMU was enabled on target stop */
- if (!armv7a->is_armv7r) {
- retval = cortex_a_mmu(target, &mmu_enabled);
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (mmu_enabled) {
- virt = address;
- retval = cortex_a_virt2phys(target, virt, &phys);
- if (retval != ERROR_OK)
- return retval;
-
- LOG_DEBUG("Reading at virtual address. "
- "Translating v:" TARGET_ADDR_FMT " to r:" TARGET_ADDR_FMT,
- virt, phys);
- address = phys;
- }
-
- if (!count || !buffer)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- retval = mem_ap_read_buf(armv7a->memory_ap, buffer, size, count, address);
-
- return retval;
-}
-
static int cortex_a_write_phys_memory(struct target *target,
target_addr_t address, uint32_t size,
uint32_t count, const uint8_t *buffer)
{
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- uint8_t apsel = swjdp->apsel;
int retval;
if (!count || !buffer)
LOG_DEBUG("Writing memory to real address " TARGET_ADDR_FMT "; size %" PRId32 "; count %" PRId32,
address, size, count);
- if (armv7a->memory_ap_available && (apsel == armv7a->memory_ap->ap_num))
- return mem_ap_write_buf(armv7a->memory_ap, buffer, size, count, address);
-
/* write memory through the CPU */
cortex_a_prep_memaccess(target, 1);
retval = cortex_a_write_cpu_memory(target, address, size, count, buffer);
return retval;
}
-static int cortex_a_write_memory_ahb(struct target *target, target_addr_t address,
- uint32_t size, uint32_t count, const uint8_t *buffer)
-{
- int mmu_enabled = 0;
- target_addr_t virt, phys;
- int retval;
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- uint8_t apsel = swjdp->apsel;
-
- if (!armv7a->memory_ap_available || (apsel != armv7a->memory_ap->ap_num))
- return target_write_memory(target, address, size, count, buffer);
-
- /* cortex_a handles unaligned memory access */
- LOG_DEBUG("Writing memory at address " TARGET_ADDR_FMT "; size %" PRId32 "; count %" PRId32,
- address, size, count);
-
- /* determine if MMU was enabled on target stop */
- if (!armv7a->is_armv7r) {
- retval = cortex_a_mmu(target, &mmu_enabled);
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (mmu_enabled) {
- virt = address;
- retval = cortex_a_virt2phys(target, virt, &phys);
- if (retval != ERROR_OK)
- return retval;
-
- LOG_DEBUG("Writing to virtual address. "
- "Translating v:" TARGET_ADDR_FMT " to r:" TARGET_ADDR_FMT,
- virt,
- phys);
- address = phys;
- }
-
- if (!count || !buffer)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- retval = mem_ap_write_buf(armv7a->memory_ap, buffer, size, count, address);
-
- return retval;
-}
-
static int cortex_a_read_buffer(struct target *target, target_addr_t address,
uint32_t count, uint8_t *buffer)
{
* will have something to do with the size we leave to it. */
for (size = 1; size < 4 && count >= size * 2 + (address & size); size *= 2) {
if (address & size) {
- int retval = cortex_a_read_memory_ahb(target, address, size, 1, buffer);
+ int retval = target_read_memory(target, address, size, 1, buffer);
if (retval != ERROR_OK)
return retval;
address += size;
for (; size > 0; size /= 2) {
uint32_t aligned = count - count % size;
if (aligned > 0) {
- int retval = cortex_a_read_memory_ahb(target, address, size, aligned / size, buffer);
+ int retval = target_read_memory(target, address, size, aligned / size, buffer);
if (retval != ERROR_OK)
return retval;
address += aligned;
* will have something to do with the size we leave to it. */
for (size = 1; size < 4 && count >= size * 2 + (address & size); size *= 2) {
if (address & size) {
- int retval = cortex_a_write_memory_ahb(target, address, size, 1, buffer);
+ int retval = target_write_memory(target, address, size, 1, buffer);
if (retval != ERROR_OK)
return retval;
address += size;
for (; size > 0; size /= 2) {
uint32_t aligned = count - count % size;
if (aligned > 0) {
- int retval = cortex_a_write_memory_ahb(target, address, size, aligned / size, buffer);
+ int retval = target_write_memory(target, address, size, aligned / size, buffer);
if (retval != ERROR_OK)
return retval;
address += aligned;
armv7a->debug_ap->memaccess_tck = 80;
- /* Search for the AHB-AB.
- * REVISIT: We should search for AXI-AP as well and make sure the AP's MEMTYPE says it
- * can access system memory. */
- armv7a->memory_ap_available = false;
- retval = dap_find_ap(swjdp, AP_TYPE_AHB_AP, &armv7a->memory_ap);
- if (retval == ERROR_OK) {
- retval = mem_ap_init(armv7a->memory_ap);
- if (retval == ERROR_OK)
- armv7a->memory_ap_available = true;
- }
- if (retval != ERROR_OK) {
- /* AHB-AP not found or unavailable - use the CPU */
- LOG_DEBUG("No AHB-AP available for memory access");
- }
-
if (!target->dbgbase_set) {
uint32_t dbgbase;
/* Get ROM Table base */
cortex_a->common_magic = CORTEX_A_COMMON_MAGIC;
armv7a->arm.dap = dap;
- cortex_a->fast_reg_read = 0;
-
/* register arch-specific functions */
armv7a->examine_debug_reason = NULL;
static int cortex_a_virt2phys(struct target *target,
target_addr_t virt, target_addr_t *phys)
{
- int retval = ERROR_FAIL;
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- uint8_t apsel = swjdp->apsel;
+ int retval;
int mmu_enabled = 0;
/*
return ERROR_OK;
}
- if (armv7a->memory_ap_available && (apsel == armv7a->memory_ap->ap_num)) {
- uint32_t ret;
- retval = armv7a_mmu_translate_va(target,
- virt, &ret);
- if (retval != ERROR_OK)
- goto done;
- *phys = ret;
- } else {/* use this method if armv7a->memory_ap not selected
- * mmu must be enable in order to get a correct translation */
- retval = cortex_a_mmu_modify(target, 1);
- if (retval != ERROR_OK)
- goto done;
- retval = armv7a_mmu_translate_va_pa(target, (uint32_t)virt,
+ /* mmu must be enable in order to get a correct translation */
+ retval = cortex_a_mmu_modify(target, 1);
+ if (retval != ERROR_OK)
+ return retval;
+ return armv7a_mmu_translate_va_pa(target, (uint32_t)virt,
(uint32_t *)phys, 1);
- }
-done:
- return retval;
}
COMMAND_HANDLER(cortex_a_handle_cache_info_command)
projects / openocd / blobdiff