X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Fcortex_a.c;h=4aae5e4731fff2dfb25edd478446b58f9310c136;hp=5fd8731885d1bf8d3c73388c61fca607b133b26a;hb=766d6114fea0c2748ed281db866588f975d2ba83;hpb=cd440bd32a120a9b4c2d703d3d16dd52f16edab2
diff --git a/src/target/cortex_a.c b/src/target/cortex_a.c
index 5fd8731885..4aae5e4731 100644
--- a/src/target/cortex_a.c
+++ b/src/target/cortex_a.c
@@ -18,7 +18,7 @@
* michel.jaouen@stericsson.com : smp minimum support *
* *
* Copyright (C) Broadcom 2012 *
- * ehunter@broadcom.com : Cortex R4 support *
+ * ehunter@broadcom.com : Cortex-R4 support *
* *
* Copyright (C) 2013 Kamal Dasu *
* kdasu.kdev@gmail.com *
@@ -34,9 +34,7 @@
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
+ * along with this program. If not, see . *
* *
* Cortex-A8(tm) TRM, ARM DDI 0344H *
* Cortex-A9(tm) TRM, ARM DDI 0407F *
@@ -55,6 +53,8 @@
#include "target_request.h"
#include "target_type.h"
#include "arm_opcodes.h"
+#include "arm_semihosting.h"
+#include "transport/transport.h"
#include
static int cortex_a_poll(struct target *target);
@@ -73,9 +73,10 @@ static int cortex_a_dap_read_coreregister_u32(struct target *target,
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,
- uint32_t virt, uint32_t *phys);
-static int cortex_a_read_apb_ab_memory(struct target *target,
+ target_addr_t virt, target_addr_t *phys);
+static int cortex_a_read_cpu_memory(struct target *target,
uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
@@ -97,33 +98,64 @@ static int cortex_a_restore_cp15_control_reg(struct target *target)
return retval;
}
-/* check address before cortex_a_apb read write access with mmu on
- * remove apb predictible data abort */
-static int cortex_a_check_address(struct target *target, uint32_t address)
+/*
+ * Set up ARM core for memory access.
+ * If !phys_access, switch to SVC mode and make sure MMU is on
+ * If phys_access, switch off mmu
+ */
+static int cortex_a_prep_memaccess(struct target *target, int phys_access)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
struct cortex_a_common *cortex_a = target_to_cortex_a(target);
- uint32_t os_border = armv7a->armv7a_mmu.os_border;
- if ((address < os_border) &&
- (armv7a->arm.core_mode == ARM_MODE_SVC)) {
- LOG_ERROR("%" PRIx32 " access in userspace and target in supervisor", address);
- return ERROR_FAIL;
- }
- if ((address >= os_border) &&
- (cortex_a->curr_mode != ARM_MODE_SVC)) {
+ int mmu_enabled = 0;
+
+ if (phys_access == 0) {
dpm_modeswitch(&armv7a->dpm, ARM_MODE_SVC);
- cortex_a->curr_mode = ARM_MODE_SVC;
- LOG_INFO("%" PRIx32 " access in kernel space and target not in supervisor",
- address);
- return ERROR_OK;
+ cortex_a_mmu(target, &mmu_enabled);
+ if (mmu_enabled)
+ cortex_a_mmu_modify(target, 1);
+ if (cortex_a->dacrfixup_mode == CORTEX_A_DACRFIXUP_ON) {
+ /* overwrite DACR to all-manager */
+ armv7a->arm.mcr(target, 15,
+ 0, 0, 3, 0,
+ 0xFFFFFFFF);
+ }
+ } else {
+ cortex_a_mmu(target, &mmu_enabled);
+ if (mmu_enabled)
+ cortex_a_mmu_modify(target, 0);
}
- if ((address < os_border) &&
- (cortex_a->curr_mode == ARM_MODE_SVC)) {
+ return ERROR_OK;
+}
+
+/*
+ * Restore ARM core after memory access.
+ * If !phys_access, switch to previous mode
+ * If phys_access, restore MMU setting
+ */
+static int cortex_a_post_memaccess(struct target *target, int phys_access)
+{
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct cortex_a_common *cortex_a = target_to_cortex_a(target);
+
+ if (phys_access == 0) {
+ if (cortex_a->dacrfixup_mode == CORTEX_A_DACRFIXUP_ON) {
+ /* restore */
+ armv7a->arm.mcr(target, 15,
+ 0, 0, 3, 0,
+ cortex_a->cp15_dacr_reg);
+ }
dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
- cortex_a->curr_mode = ARM_MODE_ANY;
+ } else {
+ int mmu_enabled = 0;
+ cortex_a_mmu(target, &mmu_enabled);
+ if (mmu_enabled)
+ cortex_a_mmu_modify(target, 1);
}
return ERROR_OK;
}
+
+
/* modify cp15_control_reg in order to enable or disable mmu for :
* - virt2phys address conversion
* - read or write memory in phys or virt address */
@@ -132,62 +164,35 @@ static int cortex_a_mmu_modify(struct target *target, int enable)
struct cortex_a_common *cortex_a = target_to_cortex_a(target);
struct armv7a_common *armv7a = target_to_armv7a(target);
int retval = ERROR_OK;
+ int need_write = 0;
+
if (enable) {
/* if mmu enabled at target stop and mmu not enable */
if (!(cortex_a->cp15_control_reg & 0x1U)) {
LOG_ERROR("trying to enable mmu on target stopped with mmu disable");
return ERROR_FAIL;
}
- if (!(cortex_a->cp15_control_reg_curr & 0x1U)) {
+ if ((cortex_a->cp15_control_reg_curr & 0x1U) == 0) {
cortex_a->cp15_control_reg_curr |= 0x1U;
- retval = armv7a->arm.mcr(target, 15,
- 0, 0, /* op1, op2 */
- 1, 0, /* CRn, CRm */
- cortex_a->cp15_control_reg_curr);
+ need_write = 1;
}
} else {
- if ((cortex_a->cp15_control_reg_curr & 0x1U)) {
- if (cortex_a->cp15_control_reg_curr & 0x4U) {
- /* data cache is active */
- cortex_a->cp15_control_reg_curr &= ~0x4U;
- /* flush data cache armv7 function to be called */
- if (armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache)
- armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache(target);
- }
+ if ((cortex_a->cp15_control_reg_curr & 0x1U) == 0x1U) {
cortex_a->cp15_control_reg_curr &= ~0x1U;
- retval = armv7a->arm.mcr(target, 15,
- 0, 0, /* op1, op2 */
- 1, 0, /* CRn, CRm */
- cortex_a->cp15_control_reg_curr);
+ need_write = 1;
}
}
- return retval;
-}
-
-/*
- * Cortex-A Basic debug access, very low level assumes state is saved
- */
-static int cortex_a8_init_debug_access(struct target *target)
-{
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- int retval;
- LOG_DEBUG(" ");
+ if (need_write) {
+ LOG_DEBUG("%s, writing cp15 ctrl: %" PRIx32,
+ enable ? "enable mmu" : "disable mmu",
+ cortex_a->cp15_control_reg_curr);
- /* Unlocking the debug registers for modification
- * The debugport might be uninitialised so try twice */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_LOCKACCESS, 0xC5ACCE55);
- if (retval != ERROR_OK) {
- /* try again */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_LOCKACCESS, 0xC5ACCE55);
- if (retval == ERROR_OK)
- LOG_USER(
- "Locking debug access failed on first, but succeeded on second try.");
+ retval = armv7a->arm.mcr(target, 15,
+ 0, 0, /* op1, op2 */
+ 1, 0, /* CRn, CRm */
+ cortex_a->cp15_control_reg_curr);
}
-
return retval;
}
@@ -197,49 +202,28 @@ static int cortex_a8_init_debug_access(struct target *target)
static int cortex_a_init_debug_access(struct target *target)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
int retval;
- uint32_t dbg_osreg;
- uint32_t cortex_part_num;
- struct cortex_a_common *cortex_a = target_to_cortex_a(target);
-
- LOG_DEBUG(" ");
- cortex_part_num = (cortex_a->cpuid & CORTEX_A_MIDR_PARTNUM_MASK) >>
- CORTEX_A_MIDR_PARTNUM_SHIFT;
-
- switch (cortex_part_num) {
- case CORTEX_A7_PARTNUM:
- case CORTEX_A15_PARTNUM:
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_OSLSR,
- &dbg_osreg);
- if (retval != ERROR_OK)
- return retval;
- LOG_DEBUG("DBGOSLSR 0x%" PRIx32, dbg_osreg);
-
- if (dbg_osreg & CPUDBG_OSLAR_LK_MASK)
- /* Unlocking the DEBUG OS registers for modification */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_OSLAR,
- 0);
- break;
+ /* lock memory-mapped access to debug registers to prevent
+ * software interference */
+ retval = mem_ap_write_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_LOCKACCESS, 0);
+ if (retval != ERROR_OK)
+ return retval;
- case CORTEX_A5_PARTNUM:
- case CORTEX_A8_PARTNUM:
- case CORTEX_A9_PARTNUM:
- default:
- retval = cortex_a8_init_debug_access(target);
- }
+ /* Disable cacheline fills and force cache write-through in debug state */
+ retval = mem_ap_write_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_DSCCR, 0);
+ if (retval != ERROR_OK)
+ return retval;
+ /* Disable TLB lookup and refill/eviction in debug state */
+ retval = mem_ap_write_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_DSMCR, 0);
if (retval != ERROR_OK)
return retval;
- /* Clear Sticky Power Down status Bit in PRSR to enable access to
- the registers in the Core Power Domain */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_PRSR, &dbg_osreg);
- LOG_DEBUG("target->coreid %" PRId32 " DBGPRSR 0x%" PRIx32, target->coreid, dbg_osreg);
+ retval = dap_run(armv7a->debug_ap->dap);
if (retval != ERROR_OK)
return retval;
@@ -257,11 +241,10 @@ static int cortex_a_wait_instrcmpl(struct target *target, uint32_t *dscr, bool f
* Writes final value of DSCR into *dscr. Pass force to force always
* reading DSCR at least once. */
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
while ((*dscr & DSCR_INSTR_COMP) == 0 || force) {
force = false;
- int retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ int retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, dscr);
if (retval != ERROR_OK) {
LOG_ERROR("Could not read DSCR register");
@@ -286,7 +269,6 @@ static int cortex_a_exec_opcode(struct target *target,
uint32_t dscr;
int retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
dscr = dscr_p ? *dscr_p : 0;
@@ -297,14 +279,14 @@ static int cortex_a_exec_opcode(struct target *target,
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_sel_write_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_ITR, opcode);
if (retval != ERROR_OK)
return retval;
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
do {
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK) {
LOG_ERROR("Could not read DSCR register");
@@ -331,7 +313,6 @@ static int cortex_a_read_regs_through_mem(struct target *target, uint32_t addres
{
int retval = ERROR_OK;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
retval = cortex_a_dap_read_coreregister_u32(target, regfile, 0);
if (retval != ERROR_OK)
@@ -343,7 +324,7 @@ static int cortex_a_read_regs_through_mem(struct target *target, uint32_t addres
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_sel_read_buf(swjdp, armv7a->memory_ap,
+ retval = mem_ap_read_buf(armv7a->memory_ap,
(uint8_t *)(®file[1]), 4, 15, address);
return retval;
@@ -356,7 +337,6 @@ static int cortex_a_dap_read_coreregister_u32(struct target *target,
uint8_t reg = regnum&0xFF;
uint32_t dscr = 0;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
if (reg > 17)
return retval;
@@ -393,9 +373,9 @@ static int cortex_a_dap_read_coreregister_u32(struct target *target,
}
/* Wait for DTRRXfull then read DTRRTX */
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
while ((dscr & DSCR_DTR_TX_FULL) == 0) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -405,7 +385,7 @@ static int cortex_a_dap_read_coreregister_u32(struct target *target,
}
}
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, value);
LOG_DEBUG("read DCC 0x%08" PRIx32, *value);
@@ -419,12 +399,11 @@ static int cortex_a_dap_write_coreregister_u32(struct target *target,
uint8_t Rd = regnum&0xFF;
uint32_t dscr;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
LOG_DEBUG("register %i, value 0x%08" PRIx32, regnum, value);
/* Check that DCCRX is not full */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -442,7 +421,7 @@ static int cortex_a_dap_write_coreregister_u32(struct target *target,
/* Write DTRRX ... sets DSCR.DTRRXfull but exec_opcode() won't care */
LOG_DEBUG("write DCC 0x%08" PRIx32, value);
- retval = mem_ap_sel_write_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRRX, value);
if (retval != ERROR_OK)
return retval;
@@ -498,9 +477,8 @@ static int cortex_a_dap_write_memap_register_u32(struct target *target,
{
int retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap, address, value);
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap, address, value);
return retval;
}
@@ -524,14 +502,13 @@ static inline struct cortex_a_common *dpm_to_a(struct arm_dpm *dpm)
static int cortex_a_write_dcc(struct cortex_a_common *a, uint32_t data)
{
LOG_DEBUG("write DCC 0x%08" PRIx32, data);
- return mem_ap_sel_write_u32(a->armv7a_common.arm.dap,
- a->armv7a_common.debug_ap, a->armv7a_common.debug_base + CPUDBG_DTRRX, data);
+ return mem_ap_write_u32(a->armv7a_common.debug_ap,
+ a->armv7a_common.debug_base + CPUDBG_DTRRX, data);
}
static int cortex_a_read_dcc(struct cortex_a_common *a, uint32_t *data,
uint32_t *dscr_p)
{
- struct adiv5_dap *swjdp = a->armv7a_common.arm.dap;
uint32_t dscr = DSCR_INSTR_COMP;
int retval;
@@ -539,9 +516,9 @@ static int cortex_a_read_dcc(struct cortex_a_common *a, uint32_t *data,
dscr = *dscr_p;
/* Wait for DTRRXfull */
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
while ((dscr & DSCR_DTR_TX_FULL) == 0) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, a->armv7a_common.debug_ap,
+ retval = mem_ap_read_atomic_u32(a->armv7a_common.debug_ap,
a->armv7a_common.debug_base + CPUDBG_DSCR,
&dscr);
if (retval != ERROR_OK)
@@ -552,7 +529,7 @@ static int cortex_a_read_dcc(struct cortex_a_common *a, uint32_t *data,
}
}
- retval = mem_ap_sel_read_atomic_u32(swjdp, a->armv7a_common.debug_ap,
+ retval = mem_ap_read_atomic_u32(a->armv7a_common.debug_ap,
a->armv7a_common.debug_base + CPUDBG_DTRTX, data);
if (retval != ERROR_OK)
return retval;
@@ -567,14 +544,13 @@ static int cortex_a_read_dcc(struct cortex_a_common *a, uint32_t *data,
static int cortex_a_dpm_prepare(struct arm_dpm *dpm)
{
struct cortex_a_common *a = dpm_to_a(dpm);
- struct adiv5_dap *swjdp = a->armv7a_common.arm.dap;
uint32_t dscr;
int retval;
/* set up invariant: INSTR_COMP is set after ever DPM operation */
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
for (;; ) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, a->armv7a_common.debug_ap,
+ retval = mem_ap_read_atomic_u32(a->armv7a_common.debug_ap,
a->armv7a_common.debug_base + CPUDBG_DSCR,
&dscr);
if (retval != ERROR_OK)
@@ -820,7 +796,8 @@ static int cortex_a_halt_smp(struct target *target)
head = target->head;
while (head != (struct target_list *)NULL) {
curr = head->target;
- if ((curr != target) && (curr->state != TARGET_HALTED))
+ if ((curr != target) && (curr->state != TARGET_HALTED)
+ && target_was_examined(curr))
retval += cortex_a_halt(curr);
head = head->next;
}
@@ -848,7 +825,6 @@ static int cortex_a_poll(struct target *target)
uint32_t dscr;
struct cortex_a_common *cortex_a = target_to_cortex_a(target);
struct armv7a_common *armv7a = &cortex_a->armv7a_common;
- struct adiv5_dap *swjdp = armv7a->arm.dap;
enum target_state prev_target_state = target->state;
/* toggle to another core is done by gdb as follow */
/* maint packet J core_id */
@@ -862,7 +838,7 @@ static int cortex_a_poll(struct target *target)
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
return retval;
}
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -884,6 +860,10 @@ static int cortex_a_poll(struct target *target)
if (retval != ERROR_OK)
return retval;
}
+
+ if (arm_semihosting(target, &retval) != 0)
+ return retval;
+
target_call_event_callbacks(target,
TARGET_EVENT_HALTED);
}
@@ -903,12 +883,8 @@ static int cortex_a_poll(struct target *target)
TARGET_EVENT_DEBUG_HALTED);
}
}
- } else if (DSCR_RUN_MODE(dscr) == DSCR_CORE_RESTARTED)
+ } else
target->state = TARGET_RUNNING;
- else {
- LOG_DEBUG("Unknown target state dscr = 0x%08" PRIx32, dscr);
- target->state = TARGET_UNKNOWN;
- }
return retval;
}
@@ -918,13 +894,12 @@ static int cortex_a_halt(struct target *target)
int retval = ERROR_OK;
uint32_t dscr;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
/*
* Tell the core to be halted by writing DRCR with 0x1
* and then wait for the core to be halted.
*/
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DRCR, DRCR_HALT);
if (retval != ERROR_OK)
return retval;
@@ -932,19 +907,19 @@ static int cortex_a_halt(struct target *target)
/*
* enter halting debug mode
*/
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ 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;
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
for (;; ) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -962,7 +937,7 @@ static int cortex_a_halt(struct target *target)
}
static int cortex_a_internal_restore(struct target *target, int current,
- uint32_t *address, int handle_breakpoints, int debug_execution)
+ target_addr_t *address, int handle_breakpoints, int debug_execution)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm *arm = &armv7a->arm;
@@ -1017,11 +992,15 @@ static int cortex_a_internal_restore(struct target *target, int current,
case ARM_STATE_JAZELLE:
LOG_ERROR("How do I resume into Jazelle state??");
return ERROR_FAIL;
+ case ARM_STATE_AARCH64:
+ LOG_ERROR("Shoudn't be in AARCH64 state");
+ return ERROR_FAIL;
}
LOG_DEBUG("resume pc = 0x%08" PRIx32, resume_pc);
buf_set_u32(arm->pc->value, 0, 32, resume_pc);
arm->pc->dirty = 1;
arm->pc->valid = 1;
+
/* restore dpm_mode at system halt */
dpm_modeswitch(&armv7a->dpm, ARM_MODE_ANY);
/* called it now before restoring context because it uses cpu
@@ -1059,7 +1038,6 @@ static int cortex_a_internal_restart(struct target *target)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm *arm = &armv7a->arm;
- struct adiv5_dap *swjdp = arm->dap;
int retval;
uint32_t dscr;
/*
@@ -1070,7 +1048,7 @@ static int cortex_a_internal_restart(struct target *target)
* disable IRQs by default, with optional override...
*/
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -1078,20 +1056,20 @@ static int cortex_a_internal_restart(struct target *target)
if ((dscr & DSCR_INSTR_COMP) == 0)
LOG_ERROR("DSCR InstrCompl must be set before leaving debug!");
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, dscr & ~DSCR_ITR_EN);
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DRCR, DRCR_RESTART |
DRCR_CLEAR_EXCEPTIONS);
if (retval != ERROR_OK)
return retval;
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
for (;; ) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -1117,11 +1095,12 @@ static int cortex_a_restore_smp(struct target *target, int handle_breakpoints)
int retval = 0;
struct target_list *head;
struct target *curr;
- uint32_t address;
+ target_addr_t address;
head = target->head;
while (head != (struct target_list *)NULL) {
curr = head->target;
- if ((curr != target) && (curr->state != TARGET_RUNNING)) {
+ if ((curr != target) && (curr->state != TARGET_RUNNING)
+ && target_was_examined(curr)) {
/* resume current address , not in step mode */
retval += cortex_a_internal_restore(curr, 1, &address,
handle_breakpoints, 0);
@@ -1134,7 +1113,7 @@ static int cortex_a_restore_smp(struct target *target, int handle_breakpoints)
}
static int cortex_a_resume(struct target *target, int current,
- uint32_t address, int handle_breakpoints, int debug_execution)
+ target_addr_t address, int handle_breakpoints, int debug_execution)
{
int retval = 0;
/* dummy resume for smp toggle in order to reduce gdb impact */
@@ -1158,11 +1137,11 @@ static int cortex_a_resume(struct target *target, int current,
if (!debug_execution) {
target->state = TARGET_RUNNING;
target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
- LOG_DEBUG("target resumed at 0x%" PRIx32, address);
+ LOG_DEBUG("target resumed at " TARGET_ADDR_FMT, address);
} else {
target->state = TARGET_DEBUG_RUNNING;
target_call_event_callbacks(target, TARGET_EVENT_DEBUG_RESUMED);
- LOG_DEBUG("target debug resumed at 0x%" PRIx32, address);
+ LOG_DEBUG("target debug resumed at " TARGET_ADDR_FMT, address);
}
return ERROR_OK;
@@ -1171,19 +1150,18 @@ static int cortex_a_resume(struct target *target, int current,
static int cortex_a_debug_entry(struct target *target)
{
int i;
- uint32_t regfile[16], cpsr, dscr;
+ uint32_t regfile[16], cpsr, spsr, 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 adiv5_dap *swjdp = armv7a->arm.dap;
struct reg *reg;
LOG_DEBUG("dscr = 0x%08" PRIx32, cortex_a->cpudbg_dscr);
/* REVISIT surely we should not re-read DSCR !! */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -1195,7 +1173,7 @@ static int cortex_a_debug_entry(struct target *target)
/* Enable the ITR execution once we are in debug mode */
dscr |= DSCR_ITR_EN;
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, dscr);
if (retval != ERROR_OK)
return retval;
@@ -1207,7 +1185,7 @@ static int cortex_a_debug_entry(struct target *target)
if (target->debug_reason == DBG_REASON_WATCHPOINT) {
uint32_t wfar;
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_WFAR,
&wfar);
if (retval != ERROR_OK)
@@ -1221,6 +1199,7 @@ static int cortex_a_debug_entry(struct target *target)
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);
@@ -1265,6 +1244,19 @@ static int cortex_a_debug_entry(struct target *target)
reg->dirty = reg->valid;
}
+ if (arm->spsr) {
+ /* read Saved PSR */
+ retval = cortex_a_dap_read_coreregister_u32(target, &spsr, 17);
+ /* store current spsr */
+ 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
/* TODO, Move this */
uint32_t cp15_control_register, cp15_cacr, cp15_nacr;
@@ -1305,7 +1297,10 @@ static int cortex_a_post_debug_entry(struct target *target)
LOG_DEBUG("cp15_control_reg: %8.8" PRIx32, cortex_a->cp15_control_reg);
cortex_a->cp15_control_reg_curr = cortex_a->cp15_control_reg;
- if (armv7a->armv7a_mmu.armv7a_cache.ctype == -1)
+ if (!armv7a->is_armv7r)
+ armv7a_read_ttbcr(target);
+
+ if (armv7a->armv7a_mmu.armv7a_cache.info == -1)
armv7a_identify_cache(target);
if (armv7a->is_armv7r) {
@@ -1320,17 +1315,26 @@ static int cortex_a_post_debug_entry(struct target *target)
(cortex_a->cp15_control_reg & 0x1000U) ? 1 : 0;
cortex_a->curr_mode = armv7a->arm.core_mode;
+ /* switch to SVC mode to read DACR */
+ 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);
return ERROR_OK;
}
int cortex_a_set_dscr_bits(struct target *target, unsigned long bit_mask, unsigned long value)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
uint32_t dscr;
/* Read DSCR */
- int retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ int retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (ERROR_OK != retval)
return retval;
@@ -1341,12 +1345,12 @@ int cortex_a_set_dscr_bits(struct target *target, unsigned long bit_mask, unsign
dscr |= value & bit_mask;
/* write new DSCR */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, dscr);
return retval;
}
-static int cortex_a_step(struct target *target, int current, uint32_t address,
+static int cortex_a_step(struct target *target, int current, target_addr_t address,
int handle_breakpoints)
{
struct cortex_a_common *cortex_a = target_to_cortex_a(target);
@@ -1403,7 +1407,7 @@ static int cortex_a_step(struct target *target, int current, uint32_t address,
if (retval != ERROR_OK)
return retval;
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
while (target->state != TARGET_HALTED) {
retval = cortex_a_poll(target);
if (retval != ERROR_OK)
@@ -1499,21 +1503,47 @@ static int cortex_a_set_breakpoint(struct target *target,
brp_list[brp_i].value);
} else if (breakpoint->type == BKPT_SOFT) {
uint8_t code[4];
+ /* length == 2: Thumb breakpoint */
if (breakpoint->length == 2)
buf_set_u32(code, 0, 32, ARMV5_T_BKPT(0x11));
else
+ /* length == 3: Thumb-2 breakpoint, actual encoding is
+ * a regular Thumb BKPT instruction but we replace a
+ * 32bit Thumb-2 instruction, so fix-up the breakpoint
+ * length
+ */
+ if (breakpoint->length == 3) {
+ buf_set_u32(code, 0, 32, ARMV5_T_BKPT(0x11));
+ breakpoint->length = 4;
+ } else
+ /* length == 4, normal ARM breakpoint */
buf_set_u32(code, 0, 32, ARMV5_BKPT(0x11));
+
retval = target_read_memory(target,
breakpoint->address & 0xFFFFFFFE,
breakpoint->length, 1,
breakpoint->orig_instr);
if (retval != ERROR_OK)
return retval;
+
+ /* make sure data cache is cleaned & invalidated down to PoC */
+ if (!armv7a->armv7a_mmu.armv7a_cache.auto_cache_enabled) {
+ armv7a_cache_flush_virt(target, breakpoint->address,
+ breakpoint->length);
+ }
+
retval = target_write_memory(target,
breakpoint->address & 0xFFFFFFFE,
breakpoint->length, 1, code);
if (retval != ERROR_OK)
return retval;
+
+ /* update i-cache at breakpoint location */
+ armv7a_l1_d_cache_inval_virt(target, breakpoint->address,
+ breakpoint->length);
+ armv7a_l1_i_cache_inval_virt(target, breakpoint->address,
+ breakpoint->length);
+
breakpoint->set = 0x11; /* Any nice value but 0 */
}
@@ -1733,6 +1763,13 @@ static int cortex_a_unset_breakpoint(struct target *target, struct breakpoint *b
return ERROR_OK;
}
} else {
+
+ /* make sure data cache is cleaned & invalidated down to PoC */
+ if (!armv7a->armv7a_mmu.armv7a_cache.auto_cache_enabled) {
+ armv7a_cache_flush_virt(target, breakpoint->address,
+ breakpoint->length);
+ }
+
/* restore original instruction (kept in target endianness) */
if (breakpoint->length == 4) {
retval = target_write_memory(target,
@@ -1747,6 +1784,12 @@ static int cortex_a_unset_breakpoint(struct target *target, struct breakpoint *b
if (retval != ERROR_OK)
return retval;
}
+
+ /* update i-cache at breakpoint location */
+ armv7a_l1_d_cache_inval_virt(target, breakpoint->address,
+ breakpoint->length);
+ armv7a_l1_i_cache_inval_virt(target, breakpoint->address,
+ breakpoint->length);
}
breakpoint->set = 0;
@@ -1836,6 +1879,8 @@ static int cortex_a_assert_reset(struct target *target)
/* FIXME when halt is requested, make it work somehow... */
+ /* This function can be called in "target not examined" state */
+
/* Issue some kind of warm reset. */
if (target_has_event_action(target, TARGET_EVENT_RESET_ASSERT))
target_handle_event(target, TARGET_EVENT_RESET_ASSERT);
@@ -1843,14 +1888,23 @@ static int cortex_a_assert_reset(struct target *target)
/* REVISIT handle "pulls" cases, if there's
* hardware that needs them to work.
*/
- jtag_add_reset(0, 1);
+
+ /*
+ * FIXME: fix reset when transport is SWD. This is a temporary
+ * work-around for release v0.10 that is not intended to stay!
+ */
+ if (transport_is_swd() ||
+ (target->reset_halt && (jtag_get_reset_config() & RESET_SRST_NO_GATING)))
+ jtag_add_reset(0, 1);
+
} else {
LOG_ERROR("%s: how to reset?", target_name(target));
return ERROR_FAIL;
}
/* registers are now invalid */
- register_cache_invalidate(armv7a->arm.core_cache);
+ if (target_was_examined(target))
+ register_cache_invalidate(armv7a->arm.core_cache);
target->state = TARGET_RESET;
@@ -1866,17 +1920,22 @@ static int cortex_a_deassert_reset(struct target *target)
/* be certain SRST is off */
jtag_add_reset(0, 0);
- retval = cortex_a_poll(target);
- if (retval != ERROR_OK)
- return retval;
+ if (target_was_examined(target)) {
+ retval = cortex_a_poll(target);
+ if (retval != ERROR_OK)
+ return retval;
+ }
if (target->reset_halt) {
if (target->state != TARGET_HALTED) {
LOG_WARNING("%s: ran after reset and before halt ...",
target_name(target));
- retval = target_halt(target);
- if (retval != ERROR_OK)
- return retval;
+ if (target_was_examined(target)) {
+ retval = target_halt(target);
+ if (retval != ERROR_OK)
+ return retval;
+ } else
+ target->state = TARGET_UNKNOWN;
}
}
@@ -1895,8 +1954,8 @@ static int cortex_a_set_dcc_mode(struct target *target, uint32_t mode, uint32_t
uint32_t new_dscr = (*dscr & ~DSCR_EXT_DCC_MASK) | mode;
if (new_dscr != *dscr) {
struct armv7a_common *armv7a = target_to_armv7a(target);
- int retval = mem_ap_sel_write_atomic_u32(armv7a->arm.dap,
- armv7a->debug_ap, armv7a->debug_base + CPUDBG_DSCR, new_dscr);
+ int retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_DSCR, new_dscr);
if (retval == ERROR_OK)
*dscr = new_dscr;
return retval;
@@ -1910,12 +1969,11 @@ static int cortex_a_wait_dscr_bits(struct target *target, uint32_t mask,
{
/* Waits until the specified bit(s) of DSCR take on a specified value. */
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- long long then = timeval_ms();
+ int64_t then = timeval_ms();
int retval;
while ((*dscr & mask) != value) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, dscr);
if (retval != ERROR_OK)
return retval;
@@ -1932,7 +1990,6 @@ static int cortex_a_read_copro(struct target *target, uint32_t opcode,
{
int retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
/* Move from coprocessor to R0. */
retval = cortex_a_exec_opcode(target, opcode, dscr);
@@ -1954,7 +2011,7 @@ static int cortex_a_read_copro(struct target *target, uint32_t opcode,
return retval;
/* Read the value transferred to DTRTX. */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, data);
if (retval != ERROR_OK)
return retval;
@@ -1987,10 +2044,9 @@ static int cortex_a_write_copro(struct target *target, uint32_t opcode,
{
int retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
/* Write the value into DTRRX. */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRRX, data);
if (retval != ERROR_OK)
return retval;
@@ -2059,20 +2115,19 @@ static int cortex_a_dfsr_to_error_code(uint32_t dfsr)
}
}
-static int cortex_a_write_apb_ab_memory_slow(struct target *target,
+static int cortex_a_write_cpu_memory_slow(struct target *target,
uint32_t size, uint32_t count, const uint8_t *buffer, uint32_t *dscr)
{
/* Writes count objects of size size from *buffer. Old value of DSCR must
* be in *dscr; updated to new value. This is slow because it works for
* non-word-sized objects and (maybe) unaligned accesses. If size == 4 and
- * the address is aligned, cortex_a_write_apb_ab_memory_fast should be
+ * the address is aligned, cortex_a_write_cpu_memory_fast should be
* preferred.
* Preconditions:
* - Address is in R0.
* - R0 is marked dirty.
*/
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
struct arm *arm = &armv7a->arm;
int retval;
@@ -2094,7 +2149,7 @@ static int cortex_a_write_apb_ab_memory_slow(struct target *target,
data = target_buffer_get_u16(target, buffer);
else
data = target_buffer_get_u32(target, buffer);
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRRX, data);
if (retval != ERROR_OK)
return retval;
@@ -2135,7 +2190,7 @@ static int cortex_a_write_apb_ab_memory_slow(struct target *target,
return ERROR_OK;
}
-static int cortex_a_write_apb_ab_memory_fast(struct target *target,
+static int cortex_a_write_cpu_memory_fast(struct target *target,
uint32_t count, const uint8_t *buffer, uint32_t *dscr)
{
/* Writes count objects of size 4 from *buffer. Old value of DSCR must be
@@ -2146,7 +2201,6 @@ static int cortex_a_write_apb_ab_memory_fast(struct target *target,
* - R0 is marked dirty.
*/
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
int retval;
/* Switch to fast mode if not already in that mode. */
@@ -2155,28 +2209,27 @@ static int cortex_a_write_apb_ab_memory_fast(struct target *target,
return retval;
/* Latch STC instruction. */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_ITR, ARMV4_5_STC(0, 1, 0, 1, 14, 5, 0, 4));
if (retval != ERROR_OK)
return retval;
/* Transfer all the data and issue all the instructions. */
- return mem_ap_sel_write_buf_noincr(swjdp, armv7a->debug_ap, buffer,
+ return mem_ap_write_buf_noincr(armv7a->debug_ap, buffer,
4, count, armv7a->debug_base + CPUDBG_DTRRX);
}
-static int cortex_a_write_apb_ab_memory(struct target *target,
+static int cortex_a_write_cpu_memory(struct target *target,
uint32_t address, uint32_t size,
uint32_t count, const uint8_t *buffer)
{
- /* Write memory through APB-AP. */
+ /* Write memory through the CPU. */
int retval, final_retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
struct arm *arm = &armv7a->arm;
uint32_t dscr, orig_dfar, orig_dfsr, fault_dscr, fault_dfar, fault_dfsr;
- LOG_DEBUG("Writing APB-AP memory address 0x%" PRIx32 " size %" PRIu32 " count %" PRIu32,
+ LOG_DEBUG("Writing CPU memory address 0x%" PRIx32 " size %" PRIu32 " count %" PRIu32,
address, size, count);
if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
@@ -2187,13 +2240,13 @@ static int cortex_a_write_apb_ab_memory(struct target *target,
return ERROR_OK;
/* Clear any abort. */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DRCR, DRCR_CLEAR_EXCEPTIONS);
if (retval != ERROR_OK)
return retval;
/* Read DSCR. */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -2212,7 +2265,7 @@ static int cortex_a_write_apb_ab_memory(struct target *target,
goto out;
/* Get the memory address into R0. */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRRX, address);
if (retval != ERROR_OK)
goto out;
@@ -2222,10 +2275,10 @@ static int cortex_a_write_apb_ab_memory(struct target *target,
if (size == 4 && (address % 4) == 0) {
/* We are doing a word-aligned transfer, so use fast mode. */
- retval = cortex_a_write_apb_ab_memory_fast(target, count, buffer, &dscr);
+ retval = cortex_a_write_cpu_memory_fast(target, count, buffer, &dscr);
} else {
/* Use slow path. */
- retval = cortex_a_write_apb_ab_memory_slow(target, size, count, buffer, &dscr);
+ retval = cortex_a_write_cpu_memory_slow(target, size, count, buffer, &dscr);
}
out:
@@ -2244,7 +2297,7 @@ out:
/* Wait until DTRRX is empty (according to ARMv7-A/-R architecture manual
* section C8.4.3, checking InstrCmpl_l is not sufficient; one must also
* check RXfull_l). Most of the time this will be free because RXfull_l
- * will be cleared immediately and cached in dscr. However, donât do this
+ * will be cleared immediately and cached in dscr. However, don't do this
* if there is fault, because then the instruction might not have completed
* successfully. */
if (!(dscr & DSCR_STICKY_ABORT_PRECISE)) {
@@ -2256,7 +2309,7 @@ out:
/* If there were any sticky abort flags, clear them. */
if (dscr & (DSCR_STICKY_ABORT_PRECISE | DSCR_STICKY_ABORT_IMPRECISE)) {
fault_dscr = dscr;
- mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DRCR, DRCR_CLEAR_EXCEPTIONS);
dscr &= ~(DSCR_STICKY_ABORT_PRECISE | DSCR_STICKY_ABORT_IMPRECISE);
} else {
@@ -2290,7 +2343,7 @@ out:
/* If the DCC is nonempty, clear it. */
if (dscr & DSCR_DTRTX_FULL_LATCHED) {
uint32_t dummy;
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, &dummy);
if (final_retval == ERROR_OK)
final_retval = retval;
@@ -2305,20 +2358,19 @@ out:
return final_retval;
}
-static int cortex_a_read_apb_ab_memory_slow(struct target *target,
+static int cortex_a_read_cpu_memory_slow(struct target *target,
uint32_t size, uint32_t count, uint8_t *buffer, uint32_t *dscr)
{
/* Reads count objects of size size into *buffer. Old value of DSCR must be
* in *dscr; updated to new value. This is slow because it works for
* non-word-sized objects and (maybe) unaligned accesses. If size == 4 and
- * the address is aligned, cortex_a_read_apb_ab_memory_fast should be
+ * the address is aligned, cortex_a_read_cpu_memory_fast should be
* preferred.
* Preconditions:
* - Address is in R0.
* - R0 is marked dirty.
*/
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
struct arm *arm = &armv7a->arm;
int retval;
@@ -2363,7 +2415,7 @@ static int cortex_a_read_apb_ab_memory_slow(struct target *target,
return retval;
/* Read the value transferred to DTRTX into the buffer. */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, &data);
if (retval != ERROR_OK)
return retval;
@@ -2382,7 +2434,7 @@ static int cortex_a_read_apb_ab_memory_slow(struct target *target,
return ERROR_OK;
}
-static int cortex_a_read_apb_ab_memory_fast(struct target *target,
+static int cortex_a_read_cpu_memory_fast(struct target *target,
uint32_t count, uint8_t *buffer, uint32_t *dscr)
{
/* Reads count objects of size 4 into *buffer. Old value of DSCR must be in
@@ -2393,8 +2445,7 @@ static int cortex_a_read_apb_ab_memory_fast(struct target *target,
* - R0 is marked dirty.
*/
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
- uint32_t new_dscr, u32;
+ uint32_t u32;
int retval;
/* Switch to non-blocking mode if not already in that mode. */
@@ -2402,19 +2453,24 @@ static int cortex_a_read_apb_ab_memory_fast(struct target *target,
if (retval != ERROR_OK)
return retval;
- if (count > 1) {
- /* Consecutively issue the LDC instruction via a write to ITR and
- * change to fast mode, in a single bulk copy since DSCR == ITR + 4.
- * The instruction is issued into the core before the mode switch. */
- uint8_t command[8];
- target_buffer_set_u32(target, command, ARMV4_5_LDC(0, 1, 0, 1, 14, 5, 0, 4));
- new_dscr = (*dscr & ~DSCR_EXT_DCC_MASK) | DSCR_EXT_DCC_FAST_MODE;
- target_buffer_set_u32(target, command + 4, new_dscr);
- retval = mem_ap_sel_write_buf(swjdp, armv7a->debug_ap, command, 4, 2,
- armv7a->debug_base + CPUDBG_ITR);
+ /* Issue the LDC instruction via a write to ITR. */
+ retval = cortex_a_exec_opcode(target, ARMV4_5_LDC(0, 1, 0, 1, 14, 5, 0, 4), dscr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ count--;
+
+ if (count > 0) {
+ /* Switch to fast mode if not already in that mode. */
+ retval = cortex_a_set_dcc_mode(target, DSCR_EXT_DCC_FAST_MODE, dscr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Latch LDC instruction. */
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_ITR, ARMV4_5_LDC(0, 1, 0, 1, 14, 5, 0, 4));
if (retval != ERROR_OK)
return retval;
- *dscr = new_dscr;
/* Read the value transferred to DTRTX into the buffer. Due to fast
* mode rules, this blocks until the instruction finishes executing and
@@ -2422,27 +2478,22 @@ static int cortex_a_read_apb_ab_memory_fast(struct target *target,
* memory. The last read of DTRTX in this call reads the second-to-last
* word from memory and issues the read instruction for the last word.
*/
- retval = mem_ap_sel_read_buf_noincr(swjdp, armv7a->debug_ap, buffer,
- 4, count - 1, armv7a->debug_base + CPUDBG_DTRTX);
+ retval = mem_ap_read_buf_noincr(armv7a->debug_ap, buffer,
+ 4, count, armv7a->debug_base + CPUDBG_DTRTX);
if (retval != ERROR_OK)
return retval;
/* Advance. */
- buffer += (count - 1) * 4;
- } else {
- /* Issue the LDC instruction via a write to ITR. */
- retval = cortex_a_exec_opcode(target, ARMV4_5_LDC(0, 1, 0, 1, 14, 5, 0, 4), dscr);
- if (retval != ERROR_OK)
- return retval;
+ buffer += count * 4;
}
- /* Switch to non-blocking mode if not already in that mode. */
- retval = cortex_a_set_dcc_mode(target, DSCR_EXT_DCC_NON_BLOCKING, dscr);
+ /* Wait for last issued instruction to complete. */
+ retval = cortex_a_wait_instrcmpl(target, dscr, false);
if (retval != ERROR_OK)
return retval;
- /* Wait for last issued instruction to complete. */
- retval = cortex_a_wait_instrcmpl(target, dscr, false);
+ /* Switch to non-blocking mode if not already in that mode. */
+ retval = cortex_a_set_dcc_mode(target, DSCR_EXT_DCC_NON_BLOCKING, dscr);
if (retval != ERROR_OK)
return retval;
@@ -2461,7 +2512,7 @@ static int cortex_a_read_apb_ab_memory_fast(struct target *target,
/* Read the value transferred to DTRTX into the buffer. This is the last
* word. */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, &u32);
if (retval != ERROR_OK)
return retval;
@@ -2470,18 +2521,17 @@ static int cortex_a_read_apb_ab_memory_fast(struct target *target,
return ERROR_OK;
}
-static int cortex_a_read_apb_ab_memory(struct target *target,
+static int cortex_a_read_cpu_memory(struct target *target,
uint32_t address, uint32_t size,
uint32_t count, uint8_t *buffer)
{
- /* Read memory through APB-AP. */
+ /* Read memory through the CPU. */
int retval, final_retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
struct arm *arm = &armv7a->arm;
uint32_t dscr, orig_dfar, orig_dfsr, fault_dscr, fault_dfar, fault_dfsr;
- LOG_DEBUG("Reading APB-AP memory address 0x%" PRIx32 " size %" PRIu32 " count %" PRIu32,
+ LOG_DEBUG("Reading CPU memory address 0x%" PRIx32 " size %" PRIu32 " count %" PRIu32,
address, size, count);
if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
@@ -2492,13 +2542,13 @@ static int cortex_a_read_apb_ab_memory(struct target *target,
return ERROR_OK;
/* Clear any abort. */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DRCR, DRCR_CLEAR_EXCEPTIONS);
if (retval != ERROR_OK)
return retval;
/* Read DSCR */
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
if (retval != ERROR_OK)
return retval;
@@ -2517,7 +2567,7 @@ static int cortex_a_read_apb_ab_memory(struct target *target,
goto out;
/* Get the memory address into R0. */
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRRX, address);
if (retval != ERROR_OK)
goto out;
@@ -2527,10 +2577,10 @@ static int cortex_a_read_apb_ab_memory(struct target *target,
if (size == 4 && (address % 4) == 0) {
/* We are doing a word-aligned transfer, so use fast mode. */
- retval = cortex_a_read_apb_ab_memory_fast(target, count, buffer, &dscr);
+ retval = cortex_a_read_cpu_memory_fast(target, count, buffer, &dscr);
} else {
/* Use slow path. */
- retval = cortex_a_read_apb_ab_memory_slow(target, size, count, buffer, &dscr);
+ retval = cortex_a_read_cpu_memory_slow(target, size, count, buffer, &dscr);
}
out:
@@ -2549,7 +2599,7 @@ out:
/* If there were any sticky abort flags, clear them. */
if (dscr & (DSCR_STICKY_ABORT_PRECISE | DSCR_STICKY_ABORT_IMPRECISE)) {
fault_dscr = dscr;
- mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
+ mem_ap_write_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DRCR, DRCR_CLEAR_EXCEPTIONS);
dscr &= ~(DSCR_STICKY_ABORT_PRECISE | DSCR_STICKY_ABORT_IMPRECISE);
} else {
@@ -2583,7 +2633,7 @@ out:
/* If the DCC is nonempty, clear it. */
if (dscr & DSCR_DTRTX_FULL_LATCHED) {
uint32_t dummy;
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, &dummy);
if (final_retval == ERROR_OK)
final_retval = retval;
@@ -2602,81 +2652,68 @@ out:
/*
* Cortex-A Memory access
*
- * This is same Cortex M3 but we must also use the correct
+ * This is same Cortex-M3 but we must also use the correct
* ap number for every access.
*/
static int cortex_a_read_phys_memory(struct target *target,
- uint32_t address, uint32_t size,
+ target_addr_t address, uint32_t size,
uint32_t count, uint8_t *buffer)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
- int retval = ERROR_COMMAND_SYNTAX_ERROR;
+ struct adiv5_dap *swjdp = armv7a->arm.dap;
+ uint8_t apsel = swjdp->apsel;
+ int retval;
- LOG_DEBUG("Reading memory at real address 0x%" PRIx32 "; size %" PRId32 "; count %" PRId32,
+ if (!count || !buffer)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ LOG_DEBUG("Reading memory at real address " TARGET_ADDR_FMT "; size %" PRId32 "; count %" PRId32,
address, size, count);
- if (count && buffer) {
- /* read memory through APB-AP */
- if (!armv7a->is_armv7r) {
- /* disable mmu */
- retval = cortex_a_mmu_modify(target, 0);
- if (retval != ERROR_OK)
- return retval;
- }
- retval = cortex_a_read_apb_ab_memory(target, address, size, count, buffer);
- }
+ 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);
+ cortex_a_post_memaccess(target, 1);
+
return retval;
}
-static int cortex_a_read_memory(struct target *target, uint32_t address,
+static int cortex_a_read_memory(struct target *target, target_addr_t address,
uint32_t size, uint32_t count, uint8_t *buffer)
{
- int mmu_enabled = 0;
int retval;
- struct armv7a_common *armv7a = target_to_armv7a(target);
/* cortex_a handles unaligned memory access */
- LOG_DEBUG("Reading memory at address 0x%" PRIx32 "; size %" PRId32 "; count %" PRId32, address,
- size, count);
+ 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) {
- retval = cortex_a_check_address(target, address);
- if (retval != ERROR_OK)
- return retval;
- /* enable MMU as we could have disabled it for phys access */
- retval = cortex_a_mmu_modify(target, 1);
- if (retval != ERROR_OK)
- return retval;
- }
- retval = cortex_a_read_apb_ab_memory(target, address, size, count, buffer);
+ cortex_a_prep_memaccess(target, 0);
+ retval = cortex_a_read_cpu_memory(target, address, size, count, buffer);
+ cortex_a_post_memaccess(target, 0);
return retval;
}
-static int cortex_a_read_memory_ahb(struct target *target, uint32_t address,
+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;
- uint32_t virt, phys;
+ 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))
+ 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 0x%" PRIx32 "; size %" PRId32 "; count %" PRId32, address,
- size, count);
+ 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) {
@@ -2691,7 +2728,8 @@ static int cortex_a_read_memory_ahb(struct target *target, uint32_t address,
if (retval != ERROR_OK)
return retval;
- LOG_DEBUG("Reading at virtual address. Translating v:0x%" PRIx32 " to r:0x%" PRIx32,
+ LOG_DEBUG("Reading at virtual address. "
+ "Translating v:" TARGET_ADDR_FMT " to r:" TARGET_ADDR_FMT,
virt, phys);
address = phys;
}
@@ -2699,84 +2737,71 @@ static int cortex_a_read_memory_ahb(struct target *target, uint32_t address,
if (!count || !buffer)
return ERROR_COMMAND_SYNTAX_ERROR;
- retval = mem_ap_sel_read_buf(swjdp, armv7a->memory_ap, buffer, size, count, address);
+ retval = mem_ap_read_buf(armv7a->memory_ap, buffer, size, count, address);
return retval;
}
static int cortex_a_write_phys_memory(struct target *target,
- uint32_t address, uint32_t size,
+ target_addr_t address, uint32_t size,
uint32_t count, const uint8_t *buffer)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
- int retval = ERROR_COMMAND_SYNTAX_ERROR;
+ struct adiv5_dap *swjdp = armv7a->arm.dap;
+ uint8_t apsel = swjdp->apsel;
+ int retval;
- LOG_DEBUG("Writing memory to real address 0x%" PRIx32 "; size %" PRId32 "; count %" PRId32, address,
- size, count);
+ if (!count || !buffer)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- if (count && buffer) {
- /* write memory through APB-AP */
- if (!armv7a->is_armv7r) {
- retval = cortex_a_mmu_modify(target, 0);
- if (retval != ERROR_OK)
- return retval;
- }
- return cortex_a_write_apb_ab_memory(target, address, size, 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);
+ cortex_a_post_memaccess(target, 1);
return retval;
}
-static int cortex_a_write_memory(struct target *target, uint32_t address,
+static int cortex_a_write_memory(struct target *target, target_addr_t address,
uint32_t size, uint32_t count, const uint8_t *buffer)
{
- int mmu_enabled = 0;
int retval;
- struct armv7a_common *armv7a = target_to_armv7a(target);
/* cortex_a handles unaligned memory access */
- LOG_DEBUG("Writing memory at address 0x%" PRIx32 "; 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) {
- retval = cortex_a_check_address(target, address);
- if (retval != ERROR_OK)
- return retval;
- /* enable MMU as we could have disabled it for phys access */
- retval = cortex_a_mmu_modify(target, 1);
- if (retval != ERROR_OK)
- return retval;
- }
- retval = cortex_a_write_apb_ab_memory(target, address, size, count, buffer);
+ LOG_DEBUG("Writing memory at address " TARGET_ADDR_FMT "; size %" PRId32 "; count %" PRId32,
+ address, size, count);
+ /* memory writes bypass the caches, must flush before writing */
armv7a_cache_auto_flush_on_write(target, address, size * count);
+ cortex_a_prep_memaccess(target, 0);
+ retval = cortex_a_write_cpu_memory(target, address, size, count, buffer);
+ cortex_a_post_memaccess(target, 0);
return retval;
}
-static int cortex_a_write_memory_ahb(struct target *target, uint32_t address,
+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;
- uint32_t virt, phys;
+ 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))
+ 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 0x%" PRIx32 "; size %" PRId32 "; count %" PRId32, address,
- size, count);
+ 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) {
@@ -2791,7 +2816,8 @@ static int cortex_a_write_memory_ahb(struct target *target, uint32_t address,
if (retval != ERROR_OK)
return retval;
- LOG_DEBUG("Writing to virtual address. Translating v:0x%" PRIx32 " to r:0x%" PRIx32,
+ LOG_DEBUG("Writing to virtual address. "
+ "Translating v:" TARGET_ADDR_FMT " to r:" TARGET_ADDR_FMT,
virt,
phys);
address = phys;
@@ -2800,12 +2826,12 @@ static int cortex_a_write_memory_ahb(struct target *target, uint32_t address,
if (!count || !buffer)
return ERROR_COMMAND_SYNTAX_ERROR;
- retval = mem_ap_sel_write_buf(swjdp, armv7a->memory_ap, buffer, size, count, address);
+ retval = mem_ap_write_buf(armv7a->memory_ap, buffer, size, count, address);
return retval;
}
-static int cortex_a_read_buffer(struct target *target, uint32_t address,
+static int cortex_a_read_buffer(struct target *target, target_addr_t address,
uint32_t count, uint8_t *buffer)
{
uint32_t size;
@@ -2839,7 +2865,7 @@ static int cortex_a_read_buffer(struct target *target, uint32_t address,
return ERROR_OK;
}
-static int cortex_a_write_buffer(struct target *target, uint32_t address,
+static int cortex_a_write_buffer(struct target *target, target_addr_t address,
uint32_t count, const uint8_t *buffer)
{
uint32_t size;
@@ -2877,7 +2903,6 @@ static int cortex_a_handle_target_request(void *priv)
{
struct target *target = priv;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct adiv5_dap *swjdp = armv7a->arm.dap;
int retval;
if (!target_was_examined(target))
@@ -2888,18 +2913,23 @@ static int cortex_a_handle_target_request(void *priv)
if (target->state == TARGET_RUNNING) {
uint32_t request;
uint32_t dscr;
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
/* check if we have data */
+ int64_t then = timeval_ms();
while ((dscr & DSCR_DTR_TX_FULL) && (retval == ERROR_OK)) {
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DTRTX, &request);
if (retval == ERROR_OK) {
target_request(target, request);
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
armv7a->debug_base + CPUDBG_DSCR, &dscr);
}
+ if (timeval_ms() > then + 1000) {
+ LOG_ERROR("Timeout waiting for dtr tx full");
+ return ERROR_FAIL;
+ }
}
}
@@ -2915,33 +2945,40 @@ static int cortex_a_examine_first(struct target *target)
struct cortex_a_common *cortex_a = target_to_cortex_a(target);
struct armv7a_common *armv7a = &cortex_a->armv7a_common;
struct adiv5_dap *swjdp = armv7a->arm.dap;
+
int i;
int retval = ERROR_OK;
- uint32_t didr, ctypr, ttypr, cpuid, dbg_osreg;
-
- /* We do one extra read to ensure DAP is configured,
- * we call ahbap_debugport_init(swjdp) instead
- */
- retval = ahbap_debugport_init(swjdp);
- if (retval != ERROR_OK)
- return retval;
+ uint32_t didr, cpuid, dbg_osreg;
- /* Search for the APB-AB - it is needed for access to debug registers */
+ /* Search for the APB-AP - it is needed for access to debug registers */
retval = dap_find_ap(swjdp, AP_TYPE_APB_AP, &armv7a->debug_ap);
if (retval != ERROR_OK) {
LOG_ERROR("Could not find APB-AP for debug access");
return retval;
}
- /* Search for the AHB-AB */
- retval = dap_find_ap(swjdp, AP_TYPE_AHB_AP, &armv7a->memory_ap);
+
+ retval = mem_ap_init(armv7a->debug_ap);
if (retval != ERROR_OK) {
- /* AHB-AP not found - use APB-AP */
- LOG_DEBUG("Could not find AHB-AP - using APB-AP for memory access");
- armv7a->memory_ap_available = false;
- } else {
- armv7a->memory_ap_available = true;
+ LOG_ERROR("Could not initialize the APB-AP");
+ return retval;
}
+ 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;
@@ -2950,11 +2987,11 @@ static int cortex_a_examine_first(struct target *target)
int32_t coreidx = target->coreid;
LOG_DEBUG("%s's dbgbase is not set, trying to detect using the ROM table",
target->cmd_name);
- retval = dap_get_debugbase(swjdp, 1, &dbgbase, &apid);
+ retval = dap_get_debugbase(armv7a->debug_ap, &dbgbase, &apid);
if (retval != ERROR_OK)
return retval;
/* Lookup 0x15 -- Processor DAP */
- retval = dap_lookup_cs_component(swjdp, 1, dbgbase, 0x15,
+ retval = dap_lookup_cs_component(armv7a->debug_ap, dbgbase, 0x15,
&armv7a->debug_base, &coreidx);
if (retval != ERROR_OK) {
LOG_ERROR("Can't detect %s's dbgbase from the ROM table; you need to specify it explicitly.",
@@ -2962,84 +2999,74 @@ static int cortex_a_examine_first(struct target *target)
return retval;
}
LOG_DEBUG("Detected core %" PRId32 " dbgbase: %08" PRIx32,
- coreidx, armv7a->debug_base);
+ target->coreid, armv7a->debug_base);
} else
armv7a->debug_base = target->dbgbase;
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_CPUID, &cpuid);
- if (retval != ERROR_OK)
- return retval;
-
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_CPUID, &cpuid);
- if (retval != ERROR_OK) {
- LOG_DEBUG("Examine %s failed", "CPUID");
- return retval;
- }
-
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_CTYPR, &ctypr);
- if (retval != ERROR_OK) {
- LOG_DEBUG("Examine %s failed", "CTYPR");
- return retval;
- }
-
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_TTYPR, &ttypr);
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_DIDR, &didr);
if (retval != ERROR_OK) {
- LOG_DEBUG("Examine %s failed", "TTYPR");
+ LOG_DEBUG("Examine %s failed", "DIDR");
return retval;
}
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_DIDR, &didr);
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_CPUID, &cpuid);
if (retval != ERROR_OK) {
- LOG_DEBUG("Examine %s failed", "DIDR");
+ LOG_DEBUG("Examine %s failed", "CPUID");
return retval;
}
- LOG_DEBUG("cpuid = 0x%08" PRIx32, cpuid);
- LOG_DEBUG("ctypr = 0x%08" PRIx32, ctypr);
- LOG_DEBUG("ttypr = 0x%08" PRIx32, ttypr);
LOG_DEBUG("didr = 0x%08" PRIx32, didr);
+ LOG_DEBUG("cpuid = 0x%08" PRIx32, cpuid);
- cortex_a->cpuid = cpuid;
- cortex_a->ctypr = ctypr;
- cortex_a->ttypr = ttypr;
cortex_a->didr = didr;
+ cortex_a->cpuid = cpuid;
- /* Unlocking the debug registers */
- if ((cpuid & CORTEX_A_MIDR_PARTNUM_MASK) >> CORTEX_A_MIDR_PARTNUM_SHIFT ==
- CORTEX_A15_PARTNUM) {
-
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_OSLAR,
- 0);
-
- if (retval != ERROR_OK)
- return retval;
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_PRSR, &dbg_osreg);
+ if (retval != ERROR_OK)
+ return retval;
+ LOG_DEBUG("target->coreid %" PRId32 " DBGPRSR 0x%" PRIx32, target->coreid, dbg_osreg);
+ if ((dbg_osreg & PRSR_POWERUP_STATUS) == 0) {
+ LOG_ERROR("target->coreid %" PRId32 " powered down!", target->coreid);
+ target->state = TARGET_UNKNOWN; /* TARGET_NO_POWER? */
+ return ERROR_TARGET_INIT_FAILED;
}
- /* Unlocking the debug registers */
- if ((cpuid & CORTEX_A_MIDR_PARTNUM_MASK) >> CORTEX_A_MIDR_PARTNUM_SHIFT ==
- CORTEX_A7_PARTNUM) {
-
- retval = mem_ap_sel_write_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_OSLAR,
- 0);
-
- if (retval != ERROR_OK)
- return retval;
- }
- retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
- armv7a->debug_base + CPUDBG_PRSR, &dbg_osreg);
+ if (dbg_osreg & PRSR_STICKY_RESET_STATUS)
+ LOG_DEBUG("target->coreid %" PRId32 " was reset!", target->coreid);
+ /* Read DBGOSLSR and check if OSLK is implemented */
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_OSLSR, &dbg_osreg);
if (retval != ERROR_OK)
return retval;
+ LOG_DEBUG("target->coreid %" PRId32 " DBGOSLSR 0x%" PRIx32, target->coreid, dbg_osreg);
- LOG_DEBUG("target->coreid %" PRId32 " DBGPRSR 0x%" PRIx32, target->coreid, dbg_osreg);
+ /* check if OS Lock is implemented */
+ if ((dbg_osreg & OSLSR_OSLM) == OSLSR_OSLM0 || (dbg_osreg & OSLSR_OSLM) == OSLSR_OSLM1) {
+ /* check if OS Lock is set */
+ if (dbg_osreg & OSLSR_OSLK) {
+ LOG_DEBUG("target->coreid %" PRId32 " OSLock set! Trying to unlock", target->coreid);
+
+ retval = mem_ap_write_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_OSLAR,
+ 0);
+ if (retval == ERROR_OK)
+ retval = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_OSLSR, &dbg_osreg);
+
+ /* if we fail to access the register or cannot reset the OSLK bit, bail out */
+ if (retval != ERROR_OK || (dbg_osreg & OSLSR_OSLK) != 0) {
+ LOG_ERROR("target->coreid %" PRId32 " OSLock sticky, core not powered?",
+ target->coreid);
+ target->state = TARGET_UNKNOWN; /* TARGET_NO_POWER? */
+ return ERROR_TARGET_INIT_FAILED;
+ }
+ }
+ }
armv7a->arm.core_type = ARM_MODE_MON;
@@ -3070,6 +3097,9 @@ static int cortex_a_examine_first(struct target *target)
LOG_DEBUG("Configured %i hw breakpoints", cortex_a->brp_num);
+ /* select debug_ap as default */
+ swjdp->apsel = armv7a->debug_ap->ap_num;
+
target_set_examined(target);
return ERROR_OK;
}
@@ -3096,37 +3126,18 @@ static int cortex_a_init_target(struct command_context *cmd_ctx,
struct target *target)
{
/* examine_first() does a bunch of this */
+ arm_semihosting_init(target);
return ERROR_OK;
}
static int cortex_a_init_arch_info(struct target *target,
- struct cortex_a_common *cortex_a, struct jtag_tap *tap)
+ struct cortex_a_common *cortex_a, struct adiv5_dap *dap)
{
struct armv7a_common *armv7a = &cortex_a->armv7a_common;
- struct adiv5_dap *dap = &armv7a->dap;
-
- armv7a->arm.dap = dap;
/* Setup struct cortex_a_common */
cortex_a->common_magic = CORTEX_A_COMMON_MAGIC;
- /* tap has no dap initialized */
- if (!tap->dap) {
- armv7a->arm.dap = dap;
- /* Setup struct cortex_a_common */
-
- /* prepare JTAG information for the new target */
- cortex_a->jtag_info.tap = tap;
- cortex_a->jtag_info.scann_size = 4;
-
- /* Leave (only) generic DAP stuff for debugport_init() */
- dap->jtag_info = &cortex_a->jtag_info;
-
- /* Number of bits for tar autoincrement, impl. dep. at least 10 */
- dap->tar_autoincr_block = (1 << 10);
- dap->memaccess_tck = 80;
- tap->dap = dap;
- } else
- armv7a->arm.dap = tap->dap;
+ armv7a->arm.dap = dap;
cortex_a->fast_reg_read = 0;
@@ -3152,19 +3163,34 @@ static int cortex_a_init_arch_info(struct target *target,
static int cortex_a_target_create(struct target *target, Jim_Interp *interp)
{
struct cortex_a_common *cortex_a = calloc(1, sizeof(struct cortex_a_common));
+ cortex_a->common_magic = CORTEX_A_COMMON_MAGIC;
+ struct adiv5_private_config *pc;
+
+ if (target->private_config == NULL)
+ return ERROR_FAIL;
+
+ pc = (struct adiv5_private_config *)target->private_config;
cortex_a->armv7a_common.is_armv7r = false;
- return cortex_a_init_arch_info(target, cortex_a, target->tap);
+ cortex_a->armv7a_common.arm.arm_vfp_version = ARM_VFP_V3;
+
+ return cortex_a_init_arch_info(target, cortex_a, pc->dap);
}
static int cortex_r4_target_create(struct target *target, Jim_Interp *interp)
{
struct cortex_a_common *cortex_a = calloc(1, sizeof(struct cortex_a_common));
+ cortex_a->common_magic = CORTEX_A_COMMON_MAGIC;
+ struct adiv5_private_config *pc;
+
+ pc = (struct adiv5_private_config *)target->private_config;
+ if (adiv5_verify_config(pc) != ERROR_OK)
+ return ERROR_FAIL;
cortex_a->armv7a_common.is_armv7r = true;
- return cortex_a_init_arch_info(target, cortex_a, target->tap);
+ return cortex_a_init_arch_info(target, cortex_a, pc->dap);
}
static void cortex_a_deinit_target(struct target *target)
@@ -3175,28 +3201,49 @@ static void cortex_a_deinit_target(struct target *target)
free(cortex_a->brp_list);
free(dpm->dbp);
free(dpm->dwp);
+ free(target->private_config);
free(cortex_a);
}
static int cortex_a_mmu(struct target *target, int *enabled)
{
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+
if (target->state != TARGET_HALTED) {
LOG_ERROR("%s: target not halted", __func__);
return ERROR_TARGET_INVALID;
}
- *enabled = target_to_cortex_a(target)->armv7a_common.armv7a_mmu.mmu_enabled;
+ if (armv7a->is_armv7r)
+ *enabled = 0;
+ else
+ *enabled = target_to_cortex_a(target)->armv7a_common.armv7a_mmu.mmu_enabled;
+
return ERROR_OK;
}
static int cortex_a_virt2phys(struct target *target,
- uint32_t virt, uint32_t *phys)
+ 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;
- if (armv7a->memory_ap_available && (apsel == armv7a->memory_ap)) {
+ int mmu_enabled = 0;
+
+ /*
+ * If the MMU was not enabled at debug entry, there is no
+ * way of knowing if there was ever a valid configuration
+ * for it and thus it's not safe to enable it. In this case,
+ * just return the virtual address as physical.
+ */
+ cortex_a_mmu(target, &mmu_enabled);
+ if (!mmu_enabled) {
+ *phys = virt;
+ 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);
@@ -3208,7 +3255,8 @@ static int cortex_a_virt2phys(struct target *target,
retval = cortex_a_mmu_modify(target, 1);
if (retval != ERROR_OK)
goto done;
- retval = armv7a_mmu_translate_va_pa(target, virt, phys, 1);
+ retval = armv7a_mmu_translate_va_pa(target, (uint32_t)virt,
+ (uint32_t *)phys, 1);
}
done:
return retval;
@@ -3304,17 +3352,14 @@ COMMAND_HANDLER(handle_cortex_a_mask_interrupts_command)
};
const Jim_Nvp *n;
- if (target->state != TARGET_HALTED) {
- command_print(CMD_CTX, "target must be stopped for \"%s\" command", CMD_NAME);
- return ERROR_OK;
- }
-
if (CMD_ARGC > 0) {
n = Jim_Nvp_name2value_simple(nvp_maskisr_modes, CMD_ARGV[0]);
- if (n->name == NULL)
+ if (n->name == NULL) {
+ LOG_ERROR("Unknown parameter: %s - should be off or on", CMD_ARGV[0]);
return ERROR_COMMAND_SYNTAX_ERROR;
- cortex_a->isrmasking_mode = n->value;
+ }
+ cortex_a->isrmasking_mode = n->value;
}
n = Jim_Nvp_value2name_simple(nvp_maskisr_modes, cortex_a->isrmasking_mode);
@@ -3323,6 +3368,32 @@ COMMAND_HANDLER(handle_cortex_a_mask_interrupts_command)
return ERROR_OK;
}
+COMMAND_HANDLER(handle_cortex_a_dacrfixup_command)
+{
+ struct target *target = get_current_target(CMD_CTX);
+ struct cortex_a_common *cortex_a = target_to_cortex_a(target);
+
+ static const Jim_Nvp nvp_dacrfixup_modes[] = {
+ { .name = "off", .value = CORTEX_A_DACRFIXUP_OFF },
+ { .name = "on", .value = CORTEX_A_DACRFIXUP_ON },
+ { .name = NULL, .value = -1 },
+ };
+ const Jim_Nvp *n;
+
+ if (CMD_ARGC > 0) {
+ n = Jim_Nvp_name2value_simple(nvp_dacrfixup_modes, CMD_ARGV[0]);
+ if (n->name == NULL)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ cortex_a->dacrfixup_mode = n->value;
+
+ }
+
+ n = Jim_Nvp_value2name_simple(nvp_dacrfixup_modes, cortex_a->dacrfixup_mode);
+ command_print(CMD_CTX, "cortex_a domain access control fixup %s", n->name);
+
+ return ERROR_OK;
+}
+
static const struct command_registration cortex_a_exec_command_handlers[] = {
{
.name = "cache_info",
@@ -3360,11 +3431,18 @@ static const struct command_registration cortex_a_exec_command_handlers[] = {
{
.name = "maskisr",
.handler = handle_cortex_a_mask_interrupts_command,
- .mode = COMMAND_EXEC,
+ .mode = COMMAND_ANY,
.help = "mask cortex_a interrupts",
.usage = "['on'|'off']",
},
-
+ {
+ .name = "dacrfixup",
+ .handler = handle_cortex_a_dacrfixup_command,
+ .mode = COMMAND_ANY,
+ .help = "set domain access control (DACR) to all-manager "
+ "on memory access",
+ .usage = "['on'|'off']",
+ },
COMMAND_REGISTRATION_DONE
};
@@ -3422,6 +3500,7 @@ struct target_type cortexa_target = {
.commands = cortex_a_command_handlers,
.target_create = cortex_a_target_create,
+ .target_jim_configure = adiv5_jim_configure,
.init_target = cortex_a_init_target,
.examine = cortex_a_examine,
.deinit_target = cortex_a_deinit_target,
@@ -3433,13 +3512,6 @@ struct target_type cortexa_target = {
};
static const struct command_registration cortex_r4_exec_command_handlers[] = {
- {
- .name = "cache_info",
- .handler = cortex_a_handle_cache_info_command,
- .mode = COMMAND_EXEC,
- .help = "display information about target caches",
- .usage = "",
- },
{
.name = "dbginit",
.handler = cortex_a_handle_dbginit_command,
@@ -3461,9 +3533,6 @@ static const struct command_registration cortex_r4_command_handlers[] = {
{
.chain = arm_command_handlers,
},
- {
- .chain = armv7a_command_handlers,
- },
{
.name = "cortex_r4",
.mode = COMMAND_ANY,
@@ -3490,8 +3559,8 @@ struct target_type cortexr4_target = {
/* REVISIT allow exporting VFP3 registers ... */
.get_gdb_reg_list = arm_get_gdb_reg_list,
- .read_memory = cortex_a_read_memory,
- .write_memory = cortex_a_write_memory,
+ .read_memory = cortex_a_read_phys_memory,
+ .write_memory = cortex_a_write_phys_memory,
.checksum_memory = arm_checksum_memory,
.blank_check_memory = arm_blank_check_memory,
@@ -3507,6 +3576,7 @@ struct target_type cortexr4_target = {
.commands = cortex_r4_command_handlers,
.target_create = cortex_r4_target_create,
+ .target_jim_configure = adiv5_jim_configure,
.init_target = cortex_a_init_target,
.examine = cortex_a_examine,
.deinit_target = cortex_a_deinit_target,