+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * 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., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- * *
* *
* Cortex-M3(tm) TRM, ARM DDI 0337E (r1p1) and 0337G (r2p0) *
* *
#include "config.h"
#endif
+#include "jtag/interface.h"
#include "breakpoints.h"
#include "cortex_m.h"
#include "target_request.h"
#include "target_type.h"
+#include "arm_adi_v5.h"
#include "arm_disassembler.h"
#include "register.h"
#include "arm_opcodes.h"
#include "arm_semihosting.h"
#include <helper/time_support.h>
+#include <rtt/rtt.h>
/* NOTE: most of this should work fine for the Cortex-M1 and
* Cortex-M0 cores too, although they're ARMv6-M not ARMv7-M.
- * Some differences: M0/M1 doesn't have FBP remapping or the
+ * Some differences: M0/M1 doesn't have FPB remapping or the
* DWT tracing/profiling support. (So the cycle counter will
* not be usable; the other stuff isn't currently used here.)
*
* any longer.
*/
-/**
- * Returns the type of a break point required by address location
- */
-#define BKPT_TYPE_BY_ADDR(addr) ((addr) < 0x20000000 ? BKPT_HARD : BKPT_SOFT)
+/* Timeout for register r/w */
+#define DHCSR_S_REGRDY_TIMEOUT (500)
+/* Supported Cortex-M Cores */
+static const struct cortex_m_part_info cortex_m_parts[] = {
+ {
+ .partno = CORTEX_M0_PARTNO,
+ .name = "Cortex-M0",
+ .arch = ARM_ARCH_V6M,
+ },
+ {
+ .partno = CORTEX_M0P_PARTNO,
+ .name = "Cortex-M0+",
+ .arch = ARM_ARCH_V6M,
+ },
+ {
+ .partno = CORTEX_M1_PARTNO,
+ .name = "Cortex-M1",
+ .arch = ARM_ARCH_V6M,
+ },
+ {
+ .partno = CORTEX_M3_PARTNO,
+ .name = "Cortex-M3",
+ .arch = ARM_ARCH_V7M,
+ .flags = CORTEX_M_F_TAR_AUTOINCR_BLOCK_4K,
+ },
+ {
+ .partno = CORTEX_M4_PARTNO,
+ .name = "Cortex-M4",
+ .arch = ARM_ARCH_V7M,
+ .flags = CORTEX_M_F_HAS_FPV4 | CORTEX_M_F_TAR_AUTOINCR_BLOCK_4K,
+ },
+ {
+ .partno = CORTEX_M7_PARTNO,
+ .name = "Cortex-M7",
+ .arch = ARM_ARCH_V7M,
+ .flags = CORTEX_M_F_HAS_FPV5,
+ },
+ {
+ .partno = CORTEX_M23_PARTNO,
+ .name = "Cortex-M23",
+ .arch = ARM_ARCH_V8M,
+ },
+ {
+ .partno = CORTEX_M33_PARTNO,
+ .name = "Cortex-M33",
+ .arch = ARM_ARCH_V8M,
+ .flags = CORTEX_M_F_HAS_FPV5,
+ },
+ {
+ .partno = CORTEX_M35P_PARTNO,
+ .name = "Cortex-M35P",
+ .arch = ARM_ARCH_V8M,
+ .flags = CORTEX_M_F_HAS_FPV5,
+ },
+ {
+ .partno = CORTEX_M55_PARTNO,
+ .name = "Cortex-M55",
+ .arch = ARM_ARCH_V8M,
+ .flags = CORTEX_M_F_HAS_FPV5,
+ },
+ {
+ .partno = STAR_MC1_PARTNO,
+ .name = "STAR-MC1",
+ .arch = ARM_ARCH_V8M,
+ .flags = CORTEX_M_F_HAS_FPV5,
+ },
+};
/* forward declarations */
-static int cortex_m3_set_breakpoint(struct target *target, struct breakpoint *breakpoint);
-static int cortex_m3_unset_breakpoint(struct target *target, struct breakpoint *breakpoint);
-static void cortex_m3_enable_watchpoints(struct target *target);
-static int cortex_m3_store_core_reg_u32(struct target *target,
- enum armv7m_regtype type, uint32_t num, uint32_t value);
-
-static int cortexm3_dap_read_coreregister_u32(struct adiv5_dap *swjdp,
- uint32_t *value, int regnum)
+static int cortex_m_store_core_reg_u32(struct target *target,
+ uint32_t num, uint32_t value);
+static void cortex_m_dwt_free(struct target *target);
+
+/** DCB DHCSR register contains S_RETIRE_ST and S_RESET_ST bits cleared
+ * on a read. Call this helper function each time DHCSR is read
+ * to preserve S_RESET_ST state in case of a reset event was detected.
+ */
+static inline void cortex_m_cumulate_dhcsr_sticky(struct cortex_m_common *cortex_m,
+ uint32_t dhcsr)
+{
+ cortex_m->dcb_dhcsr_cumulated_sticky |= dhcsr;
+}
+
+/** Read DCB DHCSR register to cortex_m->dcb_dhcsr and cumulate
+ * sticky bits in cortex_m->dcb_dhcsr_cumulated_sticky
+ */
+static int cortex_m_read_dhcsr_atomic_sticky(struct target *target)
+{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+
+ int retval = mem_ap_read_atomic_u32(armv7m->debug_ap, DCB_DHCSR,
+ &cortex_m->dcb_dhcsr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ cortex_m_cumulate_dhcsr_sticky(cortex_m, cortex_m->dcb_dhcsr);
+ return ERROR_OK;
+}
+
+static int cortex_m_load_core_reg_u32(struct target *target,
+ uint32_t regsel, uint32_t *value)
{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = target_to_armv7m(target);
int retval;
- uint32_t dcrdr;
+ uint32_t dcrdr, tmp_value;
+ int64_t then;
/* because the DCB_DCRDR is used for the emulated dcc channel
* we have to save/restore the DCB_DCRDR when used */
+ if (target->dbg_msg_enabled) {
+ retval = mem_ap_read_u32(armv7m->debug_ap, DCB_DCRDR, &dcrdr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
- retval = mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DCRSR, regsel);
if (retval != ERROR_OK)
return retval;
- /* mem_ap_write_u32(swjdp, DCB_DCRSR, regnum); */
- retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
- if (retval != ERROR_OK)
- return retval;
- retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum);
- if (retval != ERROR_OK)
- return retval;
+ /* check if value from register is ready and pre-read it */
+ then = timeval_ms();
+ while (1) {
+ retval = mem_ap_read_u32(armv7m->debug_ap, DCB_DHCSR,
+ &cortex_m->dcb_dhcsr);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, DCB_DCRDR,
+ &tmp_value);
+ if (retval != ERROR_OK)
+ return retval;
+ cortex_m_cumulate_dhcsr_sticky(cortex_m, cortex_m->dcb_dhcsr);
+ if (cortex_m->dcb_dhcsr & S_REGRDY)
+ break;
+ cortex_m->slow_register_read = true; /* Polling (still) needed. */
+ if (timeval_ms() > then + DHCSR_S_REGRDY_TIMEOUT) {
+ LOG_TARGET_ERROR(target, "Timeout waiting for DCRDR transfer ready");
+ return ERROR_TIMEOUT_REACHED;
+ }
+ keep_alive();
+ }
+
+ *value = tmp_value;
- /* mem_ap_read_u32(swjdp, DCB_DCRDR, value); */
- retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
+ if (target->dbg_msg_enabled) {
+ /* restore DCB_DCRDR - this needs to be in a separate
+ * transaction otherwise the emulated DCC channel breaks */
+ if (retval == ERROR_OK)
+ retval = mem_ap_write_atomic_u32(armv7m->debug_ap, DCB_DCRDR, dcrdr);
+ }
+
+ return retval;
+}
+
+static int cortex_m_slow_read_all_regs(struct target *target)
+{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ const unsigned int num_regs = armv7m->arm.core_cache->num_regs;
+
+ /* Opportunistically restore fast read, it'll revert to slow
+ * if any register needed polling in cortex_m_load_core_reg_u32(). */
+ cortex_m->slow_register_read = false;
+
+ for (unsigned int reg_id = 0; reg_id < num_regs; reg_id++) {
+ struct reg *r = &armv7m->arm.core_cache->reg_list[reg_id];
+ if (r->exist) {
+ int retval = armv7m->arm.read_core_reg(target, r, reg_id, ARM_MODE_ANY);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+ }
+
+ if (!cortex_m->slow_register_read)
+ LOG_TARGET_DEBUG(target, "Switching back to fast register reads");
+
+ return ERROR_OK;
+}
+
+static int cortex_m_queue_reg_read(struct target *target, uint32_t regsel,
+ uint32_t *reg_value, uint32_t *dhcsr)
+{
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ int retval;
+
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DCRSR, regsel);
if (retval != ERROR_OK)
return retval;
- retval = dap_queue_ap_read(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value);
+
+ retval = mem_ap_read_u32(armv7m->debug_ap, DCB_DHCSR, dhcsr);
if (retval != ERROR_OK)
return retval;
- retval = dap_run(swjdp);
+ return mem_ap_read_u32(armv7m->debug_ap, DCB_DCRDR, reg_value);
+}
+
+static int cortex_m_fast_read_all_regs(struct target *target)
+{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ int retval;
+ uint32_t dcrdr;
+
+ /* because the DCB_DCRDR is used for the emulated dcc channel
+ * we have to save/restore the DCB_DCRDR when used */
+ if (target->dbg_msg_enabled) {
+ retval = mem_ap_read_u32(armv7m->debug_ap, DCB_DCRDR, &dcrdr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ const unsigned int num_regs = armv7m->arm.core_cache->num_regs;
+ const unsigned int n_r32 = ARMV7M_LAST_REG - ARMV7M_CORE_FIRST_REG + 1
+ + ARMV7M_FPU_LAST_REG - ARMV7M_FPU_FIRST_REG + 1;
+ /* we need one 32-bit word for each register except FP D0..D15, which
+ * need two words */
+ uint32_t r_vals[n_r32];
+ uint32_t dhcsr[n_r32];
+
+ unsigned int wi = 0; /* write index to r_vals and dhcsr arrays */
+ unsigned int reg_id; /* register index in the reg_list, ARMV7M_R0... */
+ for (reg_id = 0; reg_id < num_regs; reg_id++) {
+ struct reg *r = &armv7m->arm.core_cache->reg_list[reg_id];
+ if (!r->exist)
+ continue; /* skip non existent registers */
+
+ if (r->size <= 8) {
+ /* Any 8-bit or shorter register is unpacked from a 32-bit
+ * container register. Skip it now. */
+ continue;
+ }
+
+ uint32_t regsel = armv7m_map_id_to_regsel(reg_id);
+ retval = cortex_m_queue_reg_read(target, regsel, &r_vals[wi],
+ &dhcsr[wi]);
+ if (retval != ERROR_OK)
+ return retval;
+ wi++;
+
+ assert(r->size == 32 || r->size == 64);
+ if (r->size == 32)
+ continue; /* done with 32-bit register */
+
+ assert(reg_id >= ARMV7M_FPU_FIRST_REG && reg_id <= ARMV7M_FPU_LAST_REG);
+ /* the odd part of FP register (S1, S3...) */
+ retval = cortex_m_queue_reg_read(target, regsel + 1, &r_vals[wi],
+ &dhcsr[wi]);
+ if (retval != ERROR_OK)
+ return retval;
+ wi++;
+ }
+
+ assert(wi <= n_r32);
+
+ retval = dap_run(armv7m->debug_ap->dap);
if (retval != ERROR_OK)
return retval;
- /* restore DCB_DCRDR - this needs to be in a seperate
- * transaction otherwise the emulated DCC channel breaks */
- if (retval == ERROR_OK)
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
+ if (target->dbg_msg_enabled) {
+ /* restore DCB_DCRDR - this needs to be in a separate
+ * transaction otherwise the emulated DCC channel breaks */
+ retval = mem_ap_write_atomic_u32(armv7m->debug_ap, DCB_DCRDR, dcrdr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ bool not_ready = false;
+ for (unsigned int i = 0; i < wi; i++) {
+ if ((dhcsr[i] & S_REGRDY) == 0) {
+ not_ready = true;
+ LOG_TARGET_DEBUG(target, "Register %u was not ready during fast read", i);
+ }
+ cortex_m_cumulate_dhcsr_sticky(cortex_m, dhcsr[i]);
+ }
+
+ if (not_ready) {
+ /* Any register was not ready,
+ * fall back to slow read with S_REGRDY polling */
+ return ERROR_TIMEOUT_REACHED;
+ }
+
+ LOG_TARGET_DEBUG(target, "read %u 32-bit registers", wi);
+
+ unsigned int ri = 0; /* read index from r_vals array */
+ for (reg_id = 0; reg_id < num_regs; reg_id++) {
+ struct reg *r = &armv7m->arm.core_cache->reg_list[reg_id];
+ if (!r->exist)
+ continue; /* skip non existent registers */
+
+ r->dirty = false;
+
+ unsigned int reg32_id;
+ uint32_t offset;
+ if (armv7m_map_reg_packing(reg_id, ®32_id, &offset)) {
+ /* Unpack a partial register from 32-bit container register */
+ struct reg *r32 = &armv7m->arm.core_cache->reg_list[reg32_id];
+
+ /* The container register ought to precede all regs unpacked
+ * from it in the reg_list. So the value should be ready
+ * to unpack */
+ assert(r32->valid);
+ buf_cpy(r32->value + offset, r->value, r->size);
+
+ } else {
+ assert(r->size == 32 || r->size == 64);
+ buf_set_u32(r->value, 0, 32, r_vals[ri++]);
+
+ if (r->size == 64) {
+ assert(reg_id >= ARMV7M_FPU_FIRST_REG && reg_id <= ARMV7M_FPU_LAST_REG);
+ /* the odd part of FP register (S1, S3...) */
+ buf_set_u32(r->value + 4, 0, 32, r_vals[ri++]);
+ }
+ }
+ r->valid = true;
+ }
+ assert(ri == wi);
return retval;
}
-static int cortexm3_dap_write_coreregister_u32(struct adiv5_dap *swjdp,
- uint32_t value, int regnum)
+static int cortex_m_store_core_reg_u32(struct target *target,
+ uint32_t regsel, uint32_t value)
{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = target_to_armv7m(target);
int retval;
uint32_t dcrdr;
+ int64_t then;
/* because the DCB_DCRDR is used for the emulated dcc channel
* we have to save/restore the DCB_DCRDR when used */
+ if (target->dbg_msg_enabled) {
+ retval = mem_ap_read_u32(armv7m->debug_ap, DCB_DCRDR, &dcrdr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
- retval = mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
- if (retval != ERROR_OK)
- return retval;
-
- /* mem_ap_write_u32(swjdp, DCB_DCRDR, core_regs[i]); */
- retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DCRDR, value);
if (retval != ERROR_OK)
return retval;
- retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value);
- // XXX check retval
- /* mem_ap_write_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR); */
- retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DCRSR, regsel | DCRSR_WNR);
if (retval != ERROR_OK)
return retval;
- retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR);
- // XXX check retval
- retval = dap_run(swjdp);
+ /* check if value is written into register */
+ then = timeval_ms();
+ while (1) {
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
+ if (retval != ERROR_OK)
+ return retval;
+ if (cortex_m->dcb_dhcsr & S_REGRDY)
+ break;
+ if (timeval_ms() > then + DHCSR_S_REGRDY_TIMEOUT) {
+ LOG_TARGET_ERROR(target, "Timeout waiting for DCRDR transfer ready");
+ return ERROR_TIMEOUT_REACHED;
+ }
+ keep_alive();
+ }
- /* restore DCB_DCRDR - this needs to be in a seperate
- * transaction otherwise the emulated DCC channel breaks */
- if (retval == ERROR_OK)
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
+ if (target->dbg_msg_enabled) {
+ /* restore DCB_DCRDR - this needs to be in a separate
+ * transaction otherwise the emulated DCC channel breaks */
+ if (retval == ERROR_OK)
+ retval = mem_ap_write_atomic_u32(armv7m->debug_ap, DCB_DCRDR, dcrdr);
+ }
return retval;
}
-static int cortex_m3_write_debug_halt_mask(struct target *target,
- uint32_t mask_on, uint32_t mask_off)
+static int cortex_m_write_debug_halt_mask(struct target *target,
+ uint32_t mask_on, uint32_t mask_off)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
/* mask off status bits */
- cortex_m3->dcb_dhcsr &= ~((0xFFFF << 16) | mask_off);
+ cortex_m->dcb_dhcsr &= ~((0xFFFFul << 16) | mask_off);
/* create new register mask */
- cortex_m3->dcb_dhcsr |= DBGKEY | C_DEBUGEN | mask_on;
+ cortex_m->dcb_dhcsr |= DBGKEY | C_DEBUGEN | mask_on;
+
+ return mem_ap_write_atomic_u32(armv7m->debug_ap, DCB_DHCSR, cortex_m->dcb_dhcsr);
+}
- return mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, cortex_m3->dcb_dhcsr);
+static int cortex_m_set_maskints(struct target *target, bool mask)
+{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ if (!!(cortex_m->dcb_dhcsr & C_MASKINTS) != mask)
+ return cortex_m_write_debug_halt_mask(target, mask ? C_MASKINTS : 0, mask ? 0 : C_MASKINTS);
+ else
+ return ERROR_OK;
}
-static int cortex_m3_clear_halt(struct target *target)
+static int cortex_m_set_maskints_for_halt(struct target *target)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ switch (cortex_m->isrmasking_mode) {
+ case CORTEX_M_ISRMASK_AUTO:
+ /* interrupts taken at resume, whether for step or run -> no mask */
+ return cortex_m_set_maskints(target, false);
+
+ case CORTEX_M_ISRMASK_OFF:
+ /* interrupts never masked */
+ return cortex_m_set_maskints(target, false);
+
+ case CORTEX_M_ISRMASK_ON:
+ /* interrupts always masked */
+ return cortex_m_set_maskints(target, true);
+
+ case CORTEX_M_ISRMASK_STEPONLY:
+ /* interrupts masked for single step only -> mask now if MASKINTS
+ * erratum, otherwise only mask before stepping */
+ return cortex_m_set_maskints(target, cortex_m->maskints_erratum);
+ }
+ return ERROR_OK;
+}
+
+static int cortex_m_set_maskints_for_run(struct target *target)
+{
+ switch (target_to_cm(target)->isrmasking_mode) {
+ case CORTEX_M_ISRMASK_AUTO:
+ /* interrupts taken at resume, whether for step or run -> no mask */
+ return cortex_m_set_maskints(target, false);
+
+ case CORTEX_M_ISRMASK_OFF:
+ /* interrupts never masked */
+ return cortex_m_set_maskints(target, false);
+
+ case CORTEX_M_ISRMASK_ON:
+ /* interrupts always masked */
+ return cortex_m_set_maskints(target, true);
+
+ case CORTEX_M_ISRMASK_STEPONLY:
+ /* interrupts masked for single step only -> no mask */
+ return cortex_m_set_maskints(target, false);
+ }
+ return ERROR_OK;
+}
+
+static int cortex_m_set_maskints_for_step(struct target *target)
+{
+ switch (target_to_cm(target)->isrmasking_mode) {
+ case CORTEX_M_ISRMASK_AUTO:
+ /* the auto-interrupt should already be done -> mask */
+ return cortex_m_set_maskints(target, true);
+
+ case CORTEX_M_ISRMASK_OFF:
+ /* interrupts never masked */
+ return cortex_m_set_maskints(target, false);
+
+ case CORTEX_M_ISRMASK_ON:
+ /* interrupts always masked */
+ return cortex_m_set_maskints(target, true);
+
+ case CORTEX_M_ISRMASK_STEPONLY:
+ /* interrupts masked for single step only -> mask */
+ return cortex_m_set_maskints(target, true);
+ }
+ return ERROR_OK;
+}
+
+static int cortex_m_clear_halt(struct target *target)
+{
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
int retval;
/* clear step if any */
- cortex_m3_write_debug_halt_mask(target, C_HALT, C_STEP);
+ cortex_m_write_debug_halt_mask(target, C_HALT, C_STEP);
/* Read Debug Fault Status Register */
- retval = mem_ap_read_atomic_u32(swjdp, NVIC_DFSR, &cortex_m3->nvic_dfsr);
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, NVIC_DFSR, &cortex_m->nvic_dfsr);
if (retval != ERROR_OK)
return retval;
/* Clear Debug Fault Status */
- retval = mem_ap_write_atomic_u32(swjdp, NVIC_DFSR, cortex_m3->nvic_dfsr);
+ retval = mem_ap_write_atomic_u32(armv7m->debug_ap, NVIC_DFSR, cortex_m->nvic_dfsr);
if (retval != ERROR_OK)
return retval;
- LOG_DEBUG(" NVIC_DFSR 0x%" PRIx32 "", cortex_m3->nvic_dfsr);
+ LOG_TARGET_DEBUG(target, "NVIC_DFSR 0x%" PRIx32 "", cortex_m->nvic_dfsr);
return ERROR_OK;
}
-static int cortex_m3_single_step_core(struct target *target)
+static int cortex_m_single_step_core(struct target *target)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
- uint32_t dhcsr_save;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
int retval;
- /* backup dhcsr reg */
- dhcsr_save = cortex_m3->dcb_dhcsr;
-
- /* Mask interrupts before clearing halt, if done already. This avoids
+ /* Mask interrupts before clearing halt, if not done already. This avoids
* Erratum 377497 (fixed in r1p0) where setting MASKINTS while clearing
* HALT can put the core into an unknown state.
*/
- if (!(cortex_m3->dcb_dhcsr & C_MASKINTS))
- {
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DHCSR,
- DBGKEY | C_MASKINTS | C_HALT | C_DEBUGEN);
+ if (!(cortex_m->dcb_dhcsr & C_MASKINTS)) {
+ retval = cortex_m_write_debug_halt_mask(target, C_MASKINTS, 0);
if (retval != ERROR_OK)
return retval;
}
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DHCSR,
- DBGKEY | C_MASKINTS | C_STEP | C_DEBUGEN);
+ retval = cortex_m_write_debug_halt_mask(target, C_STEP, C_HALT);
if (retval != ERROR_OK)
return retval;
- LOG_DEBUG(" ");
+ LOG_TARGET_DEBUG(target, "single step");
/* restore dhcsr reg */
- cortex_m3->dcb_dhcsr = dhcsr_save;
- cortex_m3_clear_halt(target);
+ cortex_m_clear_halt(target);
return ERROR_OK;
}
-static int cortex_m3_endreset_event(struct target *target)
+static int cortex_m_enable_fpb(struct target *target)
+{
+ int retval = target_write_u32(target, FP_CTRL, 3);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* check the fpb is actually enabled */
+ uint32_t fpctrl;
+ retval = target_read_u32(target, FP_CTRL, &fpctrl);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (fpctrl & 1)
+ return ERROR_OK;
+
+ return ERROR_FAIL;
+}
+
+static int cortex_m_endreset_event(struct target *target)
{
- int i;
int retval;
uint32_t dcb_demcr;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct armv7m_common *armv7m = &cortex_m3->armv7m;
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
- struct cortex_m3_fp_comparator *fp_list = cortex_m3->fp_comparator_list;
- struct cortex_m3_dwt_comparator *dwt_list = cortex_m3->dwt_comparator_list;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
+ struct adiv5_dap *swjdp = cortex_m->armv7m.arm.dap;
+ struct cortex_m_fp_comparator *fp_list = cortex_m->fp_comparator_list;
+ struct cortex_m_dwt_comparator *dwt_list = cortex_m->dwt_comparator_list;
/* REVISIT The four debug monitor bits are currently ignored... */
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &dcb_demcr);
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, DCB_DEMCR, &dcb_demcr);
if (retval != ERROR_OK)
return retval;
- LOG_DEBUG("DCB_DEMCR = 0x%8.8" PRIx32 "",dcb_demcr);
+ LOG_TARGET_DEBUG(target, "DCB_DEMCR = 0x%8.8" PRIx32 "", dcb_demcr);
/* this register is used for emulated dcc channel */
- retval = mem_ap_write_u32(swjdp, DCB_DCRDR, 0);
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DCRDR, 0);
if (retval != ERROR_OK)
return retval;
- /* Enable debug requests */
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
if (retval != ERROR_OK)
return retval;
- if (!(cortex_m3->dcb_dhcsr & C_DEBUGEN))
- {
- retval = mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN);
+
+ if (!(cortex_m->dcb_dhcsr & C_DEBUGEN)) {
+ /* Enable debug requests */
+ retval = cortex_m_write_debug_halt_mask(target, 0, C_HALT | C_STEP | C_MASKINTS);
if (retval != ERROR_OK)
return retval;
}
- /* clear any interrupt masking */
- cortex_m3_write_debug_halt_mask(target, 0, C_MASKINTS);
+ /* Restore proper interrupt masking setting for running CPU. */
+ cortex_m_set_maskints_for_run(target);
/* Enable features controlled by ITM and DWT blocks, and catch only
* the vectors we were told to pay attention to.
* choices *EXCEPT* explicitly scripted overrides like "vector_catch"
* or manual updates to the NVIC SHCSR and CCR registers.
*/
- retval = mem_ap_write_u32(swjdp, DCB_DEMCR, TRCENA | armv7m->demcr);
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DEMCR, TRCENA | armv7m->demcr);
if (retval != ERROR_OK)
return retval;
/* Paranoia: evidently some (early?) chips don't preserve all the
- * debug state (including FBP, DWT, etc) across reset...
+ * debug state (including FPB, DWT, etc) across reset...
*/
/* Enable FPB */
- retval = target_write_u32(target, FP_CTRL, 3);
- if (retval != ERROR_OK)
+ retval = cortex_m_enable_fpb(target);
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "Failed to enable the FPB");
return retval;
+ }
- cortex_m3->fpb_enabled = 1;
+ cortex_m->fpb_enabled = true;
/* Restore FPB registers */
- for (i = 0; i < cortex_m3->fp_num_code + cortex_m3->fp_num_lit; i++)
- {
+ for (unsigned int i = 0; i < cortex_m->fp_num_code + cortex_m->fp_num_lit; i++) {
retval = target_write_u32(target, fp_list[i].fpcr_address, fp_list[i].fpcr_value);
if (retval != ERROR_OK)
return retval;
}
/* Restore DWT registers */
- for (i = 0; i < cortex_m3->dwt_num_comp; i++)
- {
+ for (unsigned int i = 0; i < cortex_m->dwt_num_comp; i++) {
retval = target_write_u32(target, dwt_list[i].dwt_comparator_address + 0,
dwt_list[i].comp);
if (retval != ERROR_OK)
if (retval != ERROR_OK)
return retval;
- register_cache_invalidate(cortex_m3->armv7m.core_cache);
+ register_cache_invalidate(armv7m->arm.core_cache);
+
+ /* TODO: invalidate also working areas (needed in the case of detected reset).
+ * Doing so will require flash drivers to test if working area
+ * is still valid in all target algo calling loops.
+ */
/* make sure we have latest dhcsr flags */
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
+ if (retval != ERROR_OK)
+ return retval;
return retval;
}
-static int cortex_m3_examine_debug_reason(struct target *target)
+static int cortex_m_examine_debug_reason(struct target *target)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
+ struct cortex_m_common *cortex_m = target_to_cm(target);
- /* THIS IS NOT GOOD, TODO - better logic for detection of debug state reason */
- /* only check the debug reason if we don't know it already */
+ /* THIS IS NOT GOOD, TODO - better logic for detection of debug state reason
+ * only check the debug reason if we don't know it already */
if ((target->debug_reason != DBG_REASON_DBGRQ)
- && (target->debug_reason != DBG_REASON_SINGLESTEP))
- {
- if (cortex_m3->nvic_dfsr & DFSR_BKPT)
- {
+ && (target->debug_reason != DBG_REASON_SINGLESTEP)) {
+ if (cortex_m->nvic_dfsr & DFSR_BKPT) {
target->debug_reason = DBG_REASON_BREAKPOINT;
- if (cortex_m3->nvic_dfsr & DFSR_DWTTRAP)
+ if (cortex_m->nvic_dfsr & DFSR_DWTTRAP)
target->debug_reason = DBG_REASON_WPTANDBKPT;
- }
- else if (cortex_m3->nvic_dfsr & DFSR_DWTTRAP)
+ } else if (cortex_m->nvic_dfsr & DFSR_DWTTRAP)
target->debug_reason = DBG_REASON_WATCHPOINT;
- else if (cortex_m3->nvic_dfsr & DFSR_VCATCH)
+ else if (cortex_m->nvic_dfsr & DFSR_VCATCH)
target->debug_reason = DBG_REASON_BREAKPOINT;
- else /* EXTERNAL, HALTED */
+ else if (cortex_m->nvic_dfsr & DFSR_EXTERNAL)
+ target->debug_reason = DBG_REASON_DBGRQ;
+ else /* HALTED */
target->debug_reason = DBG_REASON_UNDEFINED;
}
return ERROR_OK;
}
-static int cortex_m3_examine_exception_reason(struct target *target)
+static int cortex_m_examine_exception_reason(struct target *target)
{
- uint32_t shcsr, except_sr, cfsr = -1, except_ar = -1;
+ uint32_t shcsr = 0, except_sr = 0, cfsr = -1, except_ar = -1;
struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
+ struct adiv5_dap *swjdp = armv7m->arm.dap;
int retval;
- retval = mem_ap_read_u32(swjdp, NVIC_SHCSR, &shcsr);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_SHCSR, &shcsr);
if (retval != ERROR_OK)
return retval;
- switch (armv7m->exception_number)
- {
+ switch (armv7m->exception_number) {
case 2: /* NMI */
break;
case 3: /* Hard Fault */
- retval = mem_ap_read_atomic_u32(swjdp, NVIC_HFSR, &except_sr);
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, NVIC_HFSR, &except_sr);
if (retval != ERROR_OK)
return retval;
- if (except_sr & 0x40000000)
- {
- retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &cfsr);
+ if (except_sr & 0x40000000) {
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_CFSR, &cfsr);
if (retval != ERROR_OK)
return retval;
}
break;
case 4: /* Memory Management */
- retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_CFSR, &except_sr);
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_read_u32(swjdp, NVIC_MMFAR, &except_ar);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_MMFAR, &except_ar);
if (retval != ERROR_OK)
return retval;
break;
case 5: /* Bus Fault */
- retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_CFSR, &except_sr);
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_read_u32(swjdp, NVIC_BFAR, &except_ar);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_BFAR, &except_ar);
if (retval != ERROR_OK)
return retval;
break;
case 6: /* Usage Fault */
- retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_CFSR, &except_sr);
+ if (retval != ERROR_OK)
+ return retval;
+ break;
+ case 7: /* Secure Fault */
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_SFSR, &except_sr);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_SFAR, &except_ar);
if (retval != ERROR_OK)
return retval;
break;
case 11: /* SVCall */
break;
case 12: /* Debug Monitor */
- retval = mem_ap_read_u32(swjdp, NVIC_DFSR, &except_sr);
+ retval = mem_ap_read_u32(armv7m->debug_ap, NVIC_DFSR, &except_sr);
if (retval != ERROR_OK)
return retval;
break;
}
retval = dap_run(swjdp);
if (retval == ERROR_OK)
- LOG_DEBUG("%s SHCSR 0x%" PRIx32 ", SR 0x%" PRIx32
+ LOG_TARGET_DEBUG(target, "%s SHCSR 0x%" PRIx32 ", SR 0x%" PRIx32
", CFSR 0x%" PRIx32 ", AR 0x%" PRIx32,
armv7m_exception_string(armv7m->exception_number),
shcsr, except_sr, cfsr, except_ar);
return retval;
}
-/* PSP is used in some thread modes */
-static const int armv7m_psp_reg_map[17] = {
- ARMV7M_R0, ARMV7M_R1, ARMV7M_R2, ARMV7M_R3,
- ARMV7M_R4, ARMV7M_R5, ARMV7M_R6, ARMV7M_R7,
- ARMV7M_R8, ARMV7M_R9, ARMV7M_R10, ARMV7M_R11,
- ARMV7M_R12, ARMV7M_PSP, ARMV7M_R14, ARMV7M_PC,
- ARMV7M_xPSR,
-};
-
-/* MSP is used in handler and some thread modes */
-static const int armv7m_msp_reg_map[17] = {
- ARMV7M_R0, ARMV7M_R1, ARMV7M_R2, ARMV7M_R3,
- ARMV7M_R4, ARMV7M_R5, ARMV7M_R6, ARMV7M_R7,
- ARMV7M_R8, ARMV7M_R9, ARMV7M_R10, ARMV7M_R11,
- ARMV7M_R12, ARMV7M_MSP, ARMV7M_R14, ARMV7M_PC,
- ARMV7M_xPSR,
-};
-
-static int cortex_m3_debug_entry(struct target *target)
+static int cortex_m_debug_entry(struct target *target)
{
- int i;
- uint32_t xPSR;
+ uint32_t xpsr;
int retval;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct armv7m_common *armv7m = &cortex_m3->armv7m;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
struct arm *arm = &armv7m->arm;
- struct adiv5_dap *swjdp = &armv7m->dap;
struct reg *r;
- LOG_DEBUG(" ");
+ LOG_TARGET_DEBUG(target, " ");
- cortex_m3_clear_halt(target);
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
+ /* Do this really early to minimize the window where the MASKINTS erratum
+ * can pile up pending interrupts. */
+ cortex_m_set_maskints_for_halt(target);
+
+ cortex_m_clear_halt(target);
+
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
if (retval != ERROR_OK)
return retval;
- if ((retval = armv7m->examine_debug_reason(target)) != ERROR_OK)
+ retval = armv7m->examine_debug_reason(target);
+ if (retval != ERROR_OK)
return retval;
- /* Examine target state and mode */
- /* First load register acessible through core debug port*/
- int num_regs = armv7m->core_cache->num_regs;
+ /* examine PE security state */
+ bool secure_state = false;
+ if (armv7m->arm.arch == ARM_ARCH_V8M) {
+ uint32_t dscsr;
- for (i = 0; i < num_regs; i++)
- {
- if (!armv7m->core_cache->reg_list[i].valid)
- armv7m->read_core_reg(target, i);
+ retval = mem_ap_read_u32(armv7m->debug_ap, DCB_DSCSR, &dscsr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ secure_state = (dscsr & DSCSR_CDS) == DSCSR_CDS;
}
- r = armv7m->core_cache->reg_list + ARMV7M_xPSR;
- xPSR = buf_get_u32(r->value, 0, 32);
+ /* Load all registers to arm.core_cache */
+ if (!cortex_m->slow_register_read) {
+ retval = cortex_m_fast_read_all_regs(target);
+ if (retval == ERROR_TIMEOUT_REACHED) {
+ cortex_m->slow_register_read = true;
+ LOG_TARGET_DEBUG(target, "Switched to slow register read");
+ }
+ }
-#ifdef ARMV7_GDB_HACKS
- /* FIXME this breaks on scan chains with more than one Cortex-M3.
- * Instead, each CM3 should have its own dummy value...
- */
- /* copy real xpsr reg for gdb, setting thumb bit */
- buf_set_u32(armv7m_gdb_dummy_cpsr_value, 0, 32, xPSR);
- buf_set_u32(armv7m_gdb_dummy_cpsr_value, 5, 1, 1);
- armv7m_gdb_dummy_cpsr_reg.valid = r->valid;
- armv7m_gdb_dummy_cpsr_reg.dirty = r->dirty;
-#endif
+ if (cortex_m->slow_register_read)
+ retval = cortex_m_slow_read_all_regs(target);
- /* For IT instructions xPSR must be reloaded on resume and clear on debug exec */
- if (xPSR & 0xf00)
- {
- r->dirty = r->valid;
- cortex_m3_store_core_reg_u32(target, ARMV7M_REGISTER_CORE_GP, 16, xPSR &~ 0xff);
- }
+ if (retval != ERROR_OK)
+ return retval;
+
+ r = arm->cpsr;
+ xpsr = buf_get_u32(r->value, 0, 32);
/* Are we in an exception handler */
- if (xPSR & 0x1FF)
- {
- armv7m->core_mode = ARMV7M_MODE_HANDLER;
- armv7m->exception_number = (xPSR & 0x1FF);
+ if (xpsr & 0x1FF) {
+ armv7m->exception_number = (xpsr & 0x1FF);
arm->core_mode = ARM_MODE_HANDLER;
arm->map = armv7m_msp_reg_map;
- }
- else
- {
- unsigned control = buf_get_u32(armv7m->core_cache
- ->reg_list[ARMV7M_CONTROL].value, 0, 2);
+ } else {
+ unsigned control = buf_get_u32(arm->core_cache
+ ->reg_list[ARMV7M_CONTROL].value, 0, 3);
/* is this thread privileged? */
- armv7m->core_mode = control & 1;
- arm->core_mode = armv7m->core_mode
- ? ARM_MODE_USER_THREAD
- : ARM_MODE_THREAD;
+ arm->core_mode = control & 1
+ ? ARM_MODE_USER_THREAD
+ : ARM_MODE_THREAD;
/* which stack is it using? */
if (control & 2)
}
if (armv7m->exception_number)
- {
- cortex_m3_examine_exception_reason(target);
- }
+ cortex_m_examine_exception_reason(target);
- LOG_DEBUG("entered debug state in core mode: %s at PC 0x%" PRIx32 ", target->state: %s",
- armv7m_mode_strings[armv7m->core_mode],
- *(uint32_t*)(arm->pc->value),
+ LOG_TARGET_DEBUG(target, "entered debug state in core mode: %s at PC 0x%" PRIx32
+ ", cpu in %s state, target->state: %s",
+ arm_mode_name(arm->core_mode),
+ buf_get_u32(arm->pc->value, 0, 32),
+ secure_state ? "Secure" : "Non-Secure",
target_state_name(target));
- if (armv7m->post_debug_entry)
- {
+ if (armv7m->post_debug_entry) {
retval = armv7m->post_debug_entry(target);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
-static int cortex_m3_poll(struct target *target)
+static int cortex_m_poll(struct target *target)
{
int detected_failure = ERROR_OK;
int retval = ERROR_OK;
enum target_state prev_target_state = target->state;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
+
+ /* Check if debug_ap is available to prevent segmentation fault.
+ * If the re-examination after an error does not find a MEM-AP
+ * (e.g. the target stopped communicating), debug_ap pointer
+ * can suddenly become NULL.
+ */
+ if (!armv7m->debug_ap) {
+ target->state = TARGET_UNKNOWN;
+ return ERROR_TARGET_NOT_EXAMINED;
+ }
/* Read from Debug Halting Control and Status Register */
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
- if (retval != ERROR_OK)
- {
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
+ if (retval != ERROR_OK) {
target->state = TARGET_UNKNOWN;
return retval;
}
/* Recover from lockup. See ARMv7-M architecture spec,
* section B1.5.15 "Unrecoverable exception cases".
*/
- if (cortex_m3->dcb_dhcsr & S_LOCKUP) {
- LOG_ERROR("%s -- clearing lockup after double fault",
- target_name(target));
- cortex_m3_write_debug_halt_mask(target, C_HALT, 0);
+ if (cortex_m->dcb_dhcsr & S_LOCKUP) {
+ LOG_TARGET_ERROR(target, "clearing lockup after double fault");
+ cortex_m_write_debug_halt_mask(target, C_HALT, 0);
target->debug_reason = DBG_REASON_DBGRQ;
/* We have to execute the rest (the "finally" equivalent, but
detected_failure = ERROR_FAIL;
/* refresh status bits */
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
if (retval != ERROR_OK)
return retval;
}
- if (cortex_m3->dcb_dhcsr & S_RESET_ST)
- {
- /* check if still in reset */
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
- if (retval != ERROR_OK)
- return retval;
-
- if (cortex_m3->dcb_dhcsr & S_RESET_ST)
- {
+ if (cortex_m->dcb_dhcsr_cumulated_sticky & S_RESET_ST) {
+ cortex_m->dcb_dhcsr_cumulated_sticky &= ~S_RESET_ST;
+ if (target->state != TARGET_RESET) {
target->state = TARGET_RESET;
- return ERROR_OK;
+ LOG_TARGET_INFO(target, "external reset detected");
}
+ return ERROR_OK;
}
- if (target->state == TARGET_RESET)
- {
+ if (target->state == TARGET_RESET) {
/* Cannot switch context while running so endreset is
* called with target->state == TARGET_RESET
*/
- LOG_DEBUG("Exit from reset with dcb_dhcsr 0x%" PRIx32,
- cortex_m3->dcb_dhcsr);
- cortex_m3_endreset_event(target);
+ LOG_TARGET_DEBUG(target, "Exit from reset with dcb_dhcsr 0x%" PRIx32,
+ cortex_m->dcb_dhcsr);
+ retval = cortex_m_endreset_event(target);
+ if (retval != ERROR_OK) {
+ target->state = TARGET_UNKNOWN;
+ return retval;
+ }
target->state = TARGET_RUNNING;
prev_target_state = TARGET_RUNNING;
}
- if (cortex_m3->dcb_dhcsr & S_HALT)
- {
+ if (cortex_m->dcb_dhcsr & S_HALT) {
target->state = TARGET_HALTED;
- if ((prev_target_state == TARGET_RUNNING) || (prev_target_state == TARGET_RESET))
- {
- if ((retval = cortex_m3_debug_entry(target)) != ERROR_OK)
+ if ((prev_target_state == TARGET_RUNNING) || (prev_target_state == TARGET_RESET)) {
+ retval = cortex_m_debug_entry(target);
+ if (retval != ERROR_OK)
return retval;
if (arm_semihosting(target, &retval) != 0)
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
}
- if (prev_target_state == TARGET_DEBUG_RUNNING)
- {
- LOG_DEBUG(" ");
- if ((retval = cortex_m3_debug_entry(target)) != ERROR_OK)
+ if (prev_target_state == TARGET_DEBUG_RUNNING) {
+ retval = cortex_m_debug_entry(target);
+ if (retval != ERROR_OK)
return retval;
target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
}
}
- /* REVISIT when S_SLEEP is set, it's in a Sleep or DeepSleep state.
- * How best to model low power modes?
- */
-
- if (target->state == TARGET_UNKNOWN)
- {
- /* check if processor is retiring instructions */
- if (cortex_m3->dcb_dhcsr & S_RETIRE_ST)
- {
+ if (target->state == TARGET_UNKNOWN) {
+ /* Check if processor is retiring instructions or sleeping.
+ * Unlike S_RESET_ST here we test if the target *is* running now,
+ * not if it has been running (possibly in the past). Instructions are
+ * typically processed much faster than OpenOCD polls DHCSR so S_RETIRE_ST
+ * is read always 1. That's the reason not to use dcb_dhcsr_cumulated_sticky.
+ */
+ if (cortex_m->dcb_dhcsr & S_RETIRE_ST || cortex_m->dcb_dhcsr & S_SLEEP) {
target->state = TARGET_RUNNING;
retval = ERROR_OK;
}
}
+ /* Check that target is truly halted, since the target could be resumed externally */
+ if ((prev_target_state == TARGET_HALTED) && !(cortex_m->dcb_dhcsr & S_HALT)) {
+ /* registers are now invalid */
+ register_cache_invalidate(armv7m->arm.core_cache);
+
+ target->state = TARGET_RUNNING;
+ LOG_TARGET_WARNING(target, "external resume detected");
+ target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
+ retval = ERROR_OK;
+ }
+
/* Did we detect a failure condition that we cleared? */
if (detected_failure != ERROR_OK)
retval = detected_failure;
return retval;
}
-static int cortex_m3_halt(struct target *target)
+static int cortex_m_halt(struct target *target)
{
- LOG_DEBUG("target->state: %s",
- target_state_name(target));
+ LOG_TARGET_DEBUG(target, "target->state: %s", target_state_name(target));
- if (target->state == TARGET_HALTED)
- {
- LOG_DEBUG("target was already halted");
+ if (target->state == TARGET_HALTED) {
+ LOG_TARGET_DEBUG(target, "target was already halted");
return ERROR_OK;
}
if (target->state == TARGET_UNKNOWN)
- {
- LOG_WARNING("target was in unknown state when halt was requested");
- }
+ LOG_TARGET_WARNING(target, "target was in unknown state when halt was requested");
- if (target->state == TARGET_RESET)
- {
- if ((jtag_get_reset_config() & RESET_SRST_PULLS_TRST) && jtag_get_srst())
- {
- LOG_ERROR("can't request a halt while in reset if nSRST pulls nTRST");
+ if (target->state == TARGET_RESET) {
+ if ((jtag_get_reset_config() & RESET_SRST_PULLS_TRST) && jtag_get_srst()) {
+ LOG_TARGET_ERROR(target, "can't request a halt while in reset if nSRST pulls nTRST");
return ERROR_TARGET_FAILURE;
- }
- else
- {
+ } else {
/* we came here in a reset_halt or reset_init sequence
- * debug entry was already prepared in cortex_m3_prepare_reset_halt()
+ * debug entry was already prepared in cortex_m3_assert_reset()
*/
target->debug_reason = DBG_REASON_DBGRQ;
}
/* Write to Debug Halting Control and Status Register */
- cortex_m3_write_debug_halt_mask(target, C_HALT, 0);
+ cortex_m_write_debug_halt_mask(target, C_HALT, 0);
+
+ /* Do this really early to minimize the window where the MASKINTS erratum
+ * can pile up pending interrupts. */
+ cortex_m_set_maskints_for_halt(target);
target->debug_reason = DBG_REASON_DBGRQ;
return ERROR_OK;
}
-static int cortex_m3_soft_reset_halt(struct target *target)
+static int cortex_m_soft_reset_halt(struct target *target)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
- uint32_t dcb_dhcsr = 0;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
int retval, timeout = 0;
+ /* on single cortex_m MCU soft_reset_halt should be avoided as same functionality
+ * can be obtained by using 'reset halt' and 'cortex_m reset_config vectreset'.
+ * As this reset only uses VC_CORERESET it would only ever reset the cortex_m
+ * core, not the peripherals */
+ LOG_TARGET_DEBUG(target, "soft_reset_halt is discouraged, please use 'reset halt' instead.");
+
+ if (!cortex_m->vectreset_supported) {
+ LOG_TARGET_ERROR(target, "VECTRESET is not supported on this Cortex-M core");
+ return ERROR_FAIL;
+ }
+
+ /* Set C_DEBUGEN */
+ retval = cortex_m_write_debug_halt_mask(target, 0, C_STEP | C_MASKINTS);
+ if (retval != ERROR_OK)
+ return retval;
+
/* Enter debug state on reset; restore DEMCR in endreset_event() */
- retval = mem_ap_write_u32(swjdp, DCB_DEMCR,
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DEMCR,
TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET);
if (retval != ERROR_OK)
return retval;
/* Request a core-only reset */
- retval = mem_ap_write_atomic_u32(swjdp, NVIC_AIRCR,
+ retval = mem_ap_write_atomic_u32(armv7m->debug_ap, NVIC_AIRCR,
AIRCR_VECTKEY | AIRCR_VECTRESET);
if (retval != ERROR_OK)
return retval;
target->state = TARGET_RESET;
/* registers are now invalid */
- register_cache_invalidate(cortex_m3->armv7m.core_cache);
+ register_cache_invalidate(cortex_m->armv7m.arm.core_cache);
- while (timeout < 100)
- {
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &dcb_dhcsr);
- if (retval == ERROR_OK)
- {
- retval = mem_ap_read_atomic_u32(swjdp, NVIC_DFSR,
- &cortex_m3->nvic_dfsr);
+ while (timeout < 100) {
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
+ if (retval == ERROR_OK) {
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, NVIC_DFSR,
+ &cortex_m->nvic_dfsr);
if (retval != ERROR_OK)
return retval;
- if ((dcb_dhcsr & S_HALT)
- && (cortex_m3->nvic_dfsr & DFSR_VCATCH))
- {
- LOG_DEBUG("system reset-halted, DHCSR 0x%08x, "
- "DFSR 0x%08x",
- (unsigned) dcb_dhcsr,
- (unsigned) cortex_m3->nvic_dfsr);
- cortex_m3_poll(target);
+ if ((cortex_m->dcb_dhcsr & S_HALT)
+ && (cortex_m->nvic_dfsr & DFSR_VCATCH)) {
+ LOG_TARGET_DEBUG(target, "system reset-halted, DHCSR 0x%08" PRIx32 ", DFSR 0x%08" PRIx32,
+ cortex_m->dcb_dhcsr, cortex_m->nvic_dfsr);
+ cortex_m_poll(target);
/* FIXME restore user's vector catch config */
return ERROR_OK;
+ } else {
+ LOG_TARGET_DEBUG(target, "waiting for system reset-halt, "
+ "DHCSR 0x%08" PRIx32 ", %d ms",
+ cortex_m->dcb_dhcsr, timeout);
}
- else
- LOG_DEBUG("waiting for system reset-halt, "
- "DHCSR 0x%08x, %d ms",
- (unsigned) dcb_dhcsr, timeout);
}
timeout++;
alive_sleep(1);
return ERROR_OK;
}
-static void cortex_m3_enable_breakpoints(struct target *target)
+void cortex_m_enable_breakpoints(struct target *target)
{
struct breakpoint *breakpoint = target->breakpoints;
/* set any pending breakpoints */
- while (breakpoint)
- {
- if (!breakpoint->set)
- cortex_m3_set_breakpoint(target, breakpoint);
+ while (breakpoint) {
+ if (!breakpoint->is_set)
+ cortex_m_set_breakpoint(target, breakpoint);
breakpoint = breakpoint->next;
}
}
-static int cortex_m3_resume(struct target *target, int current,
- uint32_t address, int handle_breakpoints, int debug_execution)
+static int cortex_m_resume(struct target *target, int current,
+ target_addr_t address, int handle_breakpoints, int debug_execution)
{
struct armv7m_common *armv7m = target_to_armv7m(target);
struct breakpoint *breakpoint = NULL;
uint32_t resume_pc;
struct reg *r;
- if (target->state != TARGET_HALTED)
- {
- LOG_WARNING("target not halted");
+ if (target->state != TARGET_HALTED) {
+ LOG_TARGET_WARNING(target, "target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if (!debug_execution)
- {
+ if (!debug_execution) {
target_free_all_working_areas(target);
- cortex_m3_enable_breakpoints(target);
- cortex_m3_enable_watchpoints(target);
+ cortex_m_enable_breakpoints(target);
+ cortex_m_enable_watchpoints(target);
}
- if (debug_execution)
- {
- r = armv7m->core_cache->reg_list + ARMV7M_PRIMASK;
+ if (debug_execution) {
+ r = armv7m->arm.core_cache->reg_list + ARMV7M_PRIMASK;
/* Disable interrupts */
/* We disable interrupts in the PRIMASK register instead of
* in parallel with disabled interrupts can cause local faults
* to not be taken.
*
- * REVISIT this clearly breaks non-debug execution, since the
- * PRIMASK register state isn't saved/restored... workaround
- * by never resuming app code after debug execution.
+ * This breaks non-debug (application) execution if not
+ * called from armv7m_start_algorithm() which saves registers.
*/
buf_set_u32(r->value, 0, 1, 1);
r->dirty = true;
r->valid = true;
- /* Make sure we are in Thumb mode */
- r = armv7m->core_cache->reg_list + ARMV7M_xPSR;
+ /* Make sure we are in Thumb mode, set xPSR.T bit */
+ /* armv7m_start_algorithm() initializes entire xPSR register.
+ * This duplicity handles the case when cortex_m_resume()
+ * is used with the debug_execution flag directly,
+ * not called through armv7m_start_algorithm().
+ */
+ r = armv7m->arm.cpsr;
buf_set_u32(r->value, 24, 1, 1);
r->dirty = true;
r->valid = true;
/* current = 1: continue on current pc, otherwise continue at <address> */
r = armv7m->arm.pc;
- if (!current)
- {
+ if (!current) {
buf_set_u32(r->value, 0, 32, address);
r->dirty = true;
r->valid = true;
* the core will break again */
if (!breakpoint_find(target, buf_get_u32(r->value, 0, 32))
- && !debug_execution)
- {
+ && !debug_execution)
armv7m_maybe_skip_bkpt_inst(target, NULL);
- }
resume_pc = buf_get_u32(r->value, 0, 32);
armv7m_restore_context(target);
/* the front-end may request us not to handle breakpoints */
- if (handle_breakpoints)
- {
+ if (handle_breakpoints) {
/* Single step past breakpoint at current address */
- if ((breakpoint = breakpoint_find(target, resume_pc)))
- {
- LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 " (ID: %d)",
- breakpoint->address,
- breakpoint->unique_id);
- cortex_m3_unset_breakpoint(target, breakpoint);
- cortex_m3_single_step_core(target);
- cortex_m3_set_breakpoint(target, breakpoint);
+ breakpoint = breakpoint_find(target, resume_pc);
+ if (breakpoint) {
+ LOG_TARGET_DEBUG(target, "unset breakpoint at " TARGET_ADDR_FMT " (ID: %" PRIu32 ")",
+ breakpoint->address,
+ breakpoint->unique_id);
+ cortex_m_unset_breakpoint(target, breakpoint);
+ cortex_m_single_step_core(target);
+ cortex_m_set_breakpoint(target, breakpoint);
}
}
/* Restart core */
- cortex_m3_write_debug_halt_mask(target, 0, C_HALT);
+ cortex_m_set_maskints_for_run(target);
+ cortex_m_write_debug_halt_mask(target, 0, C_HALT);
target->debug_reason = DBG_REASON_NOTHALTED;
/* registers are now invalid */
- register_cache_invalidate(armv7m->core_cache);
+ register_cache_invalidate(armv7m->arm.core_cache);
- if (!debug_execution)
- {
+ if (!debug_execution) {
target->state = TARGET_RUNNING;
target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
- LOG_DEBUG("target resumed at 0x%" PRIx32 "", resume_pc);
- }
- else
- {
+ LOG_TARGET_DEBUG(target, "target resumed at 0x%" PRIx32 "", resume_pc);
+ } else {
target->state = TARGET_DEBUG_RUNNING;
target_call_event_callbacks(target, TARGET_EVENT_DEBUG_RESUMED);
- LOG_DEBUG("target debug resumed at 0x%" PRIx32 "", resume_pc);
+ LOG_TARGET_DEBUG(target, "target debug resumed at 0x%" PRIx32 "", resume_pc);
}
return ERROR_OK;
}
/* int irqstepcount = 0; */
-static int cortex_m3_step(struct target *target, int current,
- uint32_t address, int handle_breakpoints)
+static int cortex_m_step(struct target *target, int current,
+ target_addr_t address, int handle_breakpoints)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct armv7m_common *armv7m = &cortex_m3->armv7m;
- struct adiv5_dap *swjdp = &armv7m->dap;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
struct breakpoint *breakpoint = NULL;
struct reg *pc = armv7m->arm.pc;
bool bkpt_inst_found = false;
int retval;
bool isr_timed_out = false;
- if (target->state != TARGET_HALTED)
- {
- LOG_WARNING("target not halted");
+ if (target->state != TARGET_HALTED) {
+ LOG_TARGET_WARNING(target, "target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* current = 1: continue on current pc, otherwise continue at <address> */
- if (!current)
+ if (!current) {
buf_set_u32(pc->value, 0, 32, address);
+ pc->dirty = true;
+ pc->valid = true;
+ }
uint32_t pc_value = buf_get_u32(pc->value, 0, 32);
if (handle_breakpoints) {
breakpoint = breakpoint_find(target, pc_value);
if (breakpoint)
- cortex_m3_unset_breakpoint(target, breakpoint);
+ cortex_m_unset_breakpoint(target, breakpoint);
}
armv7m_maybe_skip_bkpt_inst(target, &bkpt_inst_found);
/* if no bkpt instruction is found at pc then we can perform
* a normal step, otherwise we have to manually step over the bkpt
* instruction - as such simulate a step */
- if (bkpt_inst_found == false)
- {
- /* Automatic ISR masking mode off: Just step over the next instruction */
- if ((cortex_m3->isrmasking_mode != CORTEX_M3_ISRMASK_AUTO))
- {
- cortex_m3_write_debug_halt_mask(target, C_STEP, C_HALT);
- }
- else
- {
+ if (bkpt_inst_found == false) {
+ if (cortex_m->isrmasking_mode != CORTEX_M_ISRMASK_AUTO) {
+ /* Automatic ISR masking mode off: Just step over the next
+ * instruction, with interrupts on or off as appropriate. */
+ cortex_m_set_maskints_for_step(target);
+ cortex_m_write_debug_halt_mask(target, C_STEP, C_HALT);
+ } else {
/* Process interrupts during stepping in a way they don't interfere
* debugging.
*
*
*/
- /* Set a temporary break point */
- retval = breakpoint_add(target, pc_value , 2, BKPT_TYPE_BY_ADDR(pc_value));
- bool tmp_bp_set = (retval == ERROR_OK);
-
- /* No more breakpoints left, just do a step */
- if (!tmp_bp_set)
- {
- cortex_m3_write_debug_halt_mask(target, C_STEP, C_HALT);
- }
- else
- {
- /* Start the core */
- LOG_DEBUG("Starting core to serve pending interrupts");
- int64_t t_start = timeval_ms();
- cortex_m3_write_debug_halt_mask(target, 0, C_HALT | C_STEP);
-
- /* Wait for pending handlers to complete or timeout */
- do {
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
- if (retval != ERROR_OK)
- {
- target->state = TARGET_UNKNOWN;
- return retval;
+ /* 2012-09-29 ph
+ *
+ * If a break point is already set on the lower half word then a break point on
+ * the upper half word will not break again when the core is restarted. So we
+ * just step over the instruction with interrupts disabled.
+ *
+ * The documentation has no information about this, it was found by observation
+ * on STM32F1 and STM32F2. Proper explanation welcome. STM32F0 doesn't seem to
+ * suffer from this problem.
+ *
+ * To add some confusion: pc_value has bit 0 always set, while the breakpoint
+ * address has it always cleared. The former is done to indicate thumb mode
+ * to gdb.
+ *
+ */
+ if ((pc_value & 0x02) && breakpoint_find(target, pc_value & ~0x03)) {
+ LOG_TARGET_DEBUG(target, "Stepping over next instruction with interrupts disabled");
+ cortex_m_write_debug_halt_mask(target, C_HALT | C_MASKINTS, 0);
+ cortex_m_write_debug_halt_mask(target, C_STEP, C_HALT);
+ /* Re-enable interrupts if appropriate */
+ cortex_m_write_debug_halt_mask(target, C_HALT, 0);
+ cortex_m_set_maskints_for_halt(target);
+ } else {
+
+ /* Set a temporary break point */
+ if (breakpoint) {
+ retval = cortex_m_set_breakpoint(target, breakpoint);
+ } else {
+ enum breakpoint_type type = BKPT_HARD;
+ if (cortex_m->fp_rev == 0 && pc_value > 0x1FFFFFFF) {
+ /* FPB rev.1 cannot handle such addr, try BKPT instr */
+ type = BKPT_SOFT;
}
- isr_timed_out = ((timeval_ms() - t_start) > 500);
- } while (!((cortex_m3->dcb_dhcsr & S_HALT) || isr_timed_out));
+ retval = breakpoint_add(target, pc_value, 2, type);
+ }
- /* Remove the temporary breakpoint */
- breakpoint_remove(target, pc_value);
+ bool tmp_bp_set = (retval == ERROR_OK);
+
+ /* No more breakpoints left, just do a step */
+ if (!tmp_bp_set) {
+ cortex_m_set_maskints_for_step(target);
+ cortex_m_write_debug_halt_mask(target, C_STEP, C_HALT);
+ /* Re-enable interrupts if appropriate */
+ cortex_m_write_debug_halt_mask(target, C_HALT, 0);
+ cortex_m_set_maskints_for_halt(target);
+ } else {
+ /* Start the core */
+ LOG_TARGET_DEBUG(target, "Starting core to serve pending interrupts");
+ int64_t t_start = timeval_ms();
+ cortex_m_set_maskints_for_run(target);
+ cortex_m_write_debug_halt_mask(target, 0, C_HALT | C_STEP);
+
+ /* Wait for pending handlers to complete or timeout */
+ do {
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
+ if (retval != ERROR_OK) {
+ target->state = TARGET_UNKNOWN;
+ return retval;
+ }
+ isr_timed_out = ((timeval_ms() - t_start) > 500);
+ } while (!((cortex_m->dcb_dhcsr & S_HALT) || isr_timed_out));
+
+ /* only remove breakpoint if we created it */
+ if (breakpoint)
+ cortex_m_unset_breakpoint(target, breakpoint);
+ else {
+ /* Remove the temporary breakpoint */
+ breakpoint_remove(target, pc_value);
+ }
- if (isr_timed_out)
- {
- LOG_DEBUG("Interrupt handlers didn't complete within time, "
+ if (isr_timed_out) {
+ LOG_TARGET_DEBUG(target, "Interrupt handlers didn't complete within time, "
"leaving target running");
- }
- else
- {
- /* Step over next instruction with interrupts disabled */
- cortex_m3_write_debug_halt_mask(target, C_HALT | C_MASKINTS, 0);
- cortex_m3_write_debug_halt_mask(target, C_STEP, C_HALT);
- /* Re-enable interrupts */
- cortex_m3_write_debug_halt_mask(target, C_HALT, C_MASKINTS);
+ } else {
+ /* Step over next instruction with interrupts disabled */
+ cortex_m_set_maskints_for_step(target);
+ cortex_m_write_debug_halt_mask(target,
+ C_HALT | C_MASKINTS,
+ 0);
+ cortex_m_write_debug_halt_mask(target, C_STEP, C_HALT);
+ /* Re-enable interrupts if appropriate */
+ cortex_m_write_debug_halt_mask(target, C_HALT, 0);
+ cortex_m_set_maskints_for_halt(target);
+ }
}
}
}
}
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
+ retval = cortex_m_read_dhcsr_atomic_sticky(target);
if (retval != ERROR_OK)
return retval;
/* registers are now invalid */
- register_cache_invalidate(cortex_m3->armv7m.core_cache);
+ register_cache_invalidate(armv7m->arm.core_cache);
if (breakpoint)
- cortex_m3_set_breakpoint(target, breakpoint);
+ cortex_m_set_breakpoint(target, breakpoint);
if (isr_timed_out) {
/* Leave the core running. The user has to stop execution manually. */
return ERROR_OK;
}
- LOG_DEBUG("target stepped dcb_dhcsr = 0x%" PRIx32
- " nvic_icsr = 0x%" PRIx32,
- cortex_m3->dcb_dhcsr, cortex_m3->nvic_icsr);
+ LOG_TARGET_DEBUG(target, "target stepped dcb_dhcsr = 0x%" PRIx32
+ " nvic_icsr = 0x%" PRIx32,
+ cortex_m->dcb_dhcsr, cortex_m->nvic_icsr);
- retval = cortex_m3_debug_entry(target);
+ retval = cortex_m_debug_entry(target);
if (retval != ERROR_OK)
return retval;
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
- LOG_DEBUG("target stepped dcb_dhcsr = 0x%" PRIx32
- " nvic_icsr = 0x%" PRIx32,
- cortex_m3->dcb_dhcsr, cortex_m3->nvic_icsr);
+ LOG_TARGET_DEBUG(target, "target stepped dcb_dhcsr = 0x%" PRIx32
+ " nvic_icsr = 0x%" PRIx32,
+ cortex_m->dcb_dhcsr, cortex_m->nvic_icsr);
return ERROR_OK;
}
-static int cortex_m3_assert_reset(struct target *target)
+static int cortex_m_assert_reset(struct target *target)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
- enum cortex_m3_soft_reset_config reset_config = cortex_m3->soft_reset_config;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
+ enum cortex_m_soft_reset_config reset_config = cortex_m->soft_reset_config;
- LOG_DEBUG("target->state: %s",
+ LOG_TARGET_DEBUG(target, "target->state: %s",
target_state_name(target));
enum reset_types jtag_reset_config = jtag_get_reset_config();
/* allow scripts to override the reset event */
target_handle_event(target, TARGET_EVENT_RESET_ASSERT);
- register_cache_invalidate(cortex_m3->armv7m.core_cache);
+ register_cache_invalidate(cortex_m->armv7m.arm.core_cache);
target->state = TARGET_RESET;
return ERROR_OK;
}
- /* Enable debug requests */
- int retval;
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
- if (retval != ERROR_OK)
- return retval;
- if (!(cortex_m3->dcb_dhcsr & C_DEBUGEN))
- {
- retval = mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN);
- if (retval != ERROR_OK)
- return retval;
+ /* some cores support connecting while srst is asserted
+ * use that mode is it has been configured */
+
+ bool srst_asserted = false;
+
+ if (!target_was_examined(target)) {
+ if (jtag_reset_config & RESET_HAS_SRST) {
+ adapter_assert_reset();
+ if (target->reset_halt)
+ LOG_TARGET_ERROR(target, "Target not examined, will not halt after reset!");
+ return ERROR_OK;
+ } else {
+ LOG_TARGET_ERROR(target, "Target not examined, reset NOT asserted!");
+ return ERROR_FAIL;
+ }
}
- retval = mem_ap_write_u32(swjdp, DCB_DCRDR, 0);
- if (retval != ERROR_OK)
- return retval;
+ if ((jtag_reset_config & RESET_HAS_SRST) &&
+ (jtag_reset_config & RESET_SRST_NO_GATING)) {
+ adapter_assert_reset();
+ srst_asserted = true;
+ }
- if (!target->reset_halt)
- {
+ /* Enable debug requests */
+ int retval = cortex_m_read_dhcsr_atomic_sticky(target);
+
+ /* Store important errors instead of failing and proceed to reset assert */
+
+ if (retval != ERROR_OK || !(cortex_m->dcb_dhcsr & C_DEBUGEN))
+ retval = cortex_m_write_debug_halt_mask(target, 0, C_HALT | C_STEP | C_MASKINTS);
+
+ /* If the processor is sleeping in a WFI or WFE instruction, the
+ * C_HALT bit must be asserted to regain control */
+ if (retval == ERROR_OK && (cortex_m->dcb_dhcsr & S_SLEEP))
+ retval = cortex_m_write_debug_halt_mask(target, C_HALT, 0);
+
+ mem_ap_write_u32(armv7m->debug_ap, DCB_DCRDR, 0);
+ /* Ignore less important errors */
+
+ if (!target->reset_halt) {
/* Set/Clear C_MASKINTS in a separate operation */
- if (cortex_m3->dcb_dhcsr & C_MASKINTS)
- {
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DHCSR,
- DBGKEY | C_DEBUGEN | C_HALT);
- if (retval != ERROR_OK)
- return retval;
- }
+ cortex_m_set_maskints_for_run(target);
/* clear any debug flags before resuming */
- cortex_m3_clear_halt(target);
+ cortex_m_clear_halt(target);
/* clear C_HALT in dhcsr reg */
- cortex_m3_write_debug_halt_mask(target, 0, C_HALT);
- }
- else
- {
+ cortex_m_write_debug_halt_mask(target, 0, C_HALT);
+ } else {
/* Halt in debug on reset; endreset_event() restores DEMCR.
*
* REVISIT catching BUSERR presumably helps to defend against
* bad vector table entries. Should this include MMERR or
* other flags too?
*/
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DEMCR,
+ int retval2;
+ retval2 = mem_ap_write_atomic_u32(armv7m->debug_ap, DCB_DEMCR,
TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET);
- if (retval != ERROR_OK)
- return retval;
+ if (retval != ERROR_OK || retval2 != ERROR_OK)
+ LOG_TARGET_INFO(target, "AP write error, reset will not halt");
}
- if (jtag_reset_config & RESET_HAS_SRST)
- {
+ if (jtag_reset_config & RESET_HAS_SRST) {
/* default to asserting srst */
- if (jtag_reset_config & RESET_SRST_PULLS_TRST)
- {
- jtag_add_reset(1, 1);
- }
- else
- {
- jtag_add_reset(0, 1);
- }
- }
- else
- {
+ if (!srst_asserted)
+ adapter_assert_reset();
+
+ /* srst is asserted, ignore AP access errors */
+ retval = ERROR_OK;
+ } else {
/* Use a standard Cortex-M3 software reset mechanism.
- * We default to using VECRESET as it is supported on all current cores.
+ * We default to using VECTRESET as it is supported on all current cores
+ * (except Cortex-M0, M0+ and M1 which support SYSRESETREQ only!)
* This has the disadvantage of not resetting the peripherals, so a
* reset-init event handler is needed to perform any peripheral resets.
*/
- retval = mem_ap_write_atomic_u32(swjdp, NVIC_AIRCR,
- AIRCR_VECTKEY | ((reset_config == CORTEX_M3_RESET_SYSRESETREQ)
- ? AIRCR_SYSRESETREQ : AIRCR_VECTRESET));
- if (retval != ERROR_OK)
- return retval;
+ if (!cortex_m->vectreset_supported
+ && reset_config == CORTEX_M_RESET_VECTRESET) {
+ reset_config = CORTEX_M_RESET_SYSRESETREQ;
+ LOG_TARGET_WARNING(target, "VECTRESET is not supported on this Cortex-M core, using SYSRESETREQ instead.");
+ LOG_TARGET_WARNING(target, "Set 'cortex_m reset_config sysresetreq'.");
+ }
- LOG_DEBUG("Using Cortex-M3 %s", (reset_config == CORTEX_M3_RESET_SYSRESETREQ)
- ? "SYSRESETREQ" : "VECTRESET");
+ LOG_TARGET_DEBUG(target, "Using Cortex-M %s", (reset_config == CORTEX_M_RESET_SYSRESETREQ)
+ ? "SYSRESETREQ" : "VECTRESET");
- if (reset_config == CORTEX_M3_RESET_VECTRESET) {
- LOG_WARNING("Only resetting the Cortex-M3 core, use a reset-init event "
- "handler to reset any peripherals");
+ if (reset_config == CORTEX_M_RESET_VECTRESET) {
+ LOG_TARGET_WARNING(target, "Only resetting the Cortex-M core, use a reset-init event "
+ "handler to reset any peripherals or configure hardware srst support.");
}
- {
+ int retval3;
+ retval3 = mem_ap_write_atomic_u32(armv7m->debug_ap, NVIC_AIRCR,
+ AIRCR_VECTKEY | ((reset_config == CORTEX_M_RESET_SYSRESETREQ)
+ ? AIRCR_SYSRESETREQ : AIRCR_VECTRESET));
+ if (retval3 != ERROR_OK)
+ LOG_TARGET_DEBUG(target, "Ignoring AP write error right after reset");
+
+ retval3 = dap_dp_init_or_reconnect(armv7m->debug_ap->dap);
+ if (retval3 != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "DP initialisation failed");
+ /* The error return value must not be propagated in this case.
+ * SYSRESETREQ or VECTRESET have been possibly triggered
+ * so reset processing should continue */
+ } else {
/* I do not know why this is necessary, but it
* fixes strange effects (step/resume cause NMI
* after reset) on LM3S6918 -- Michael Schwingen
*/
uint32_t tmp;
- retval = mem_ap_read_atomic_u32(swjdp, NVIC_AIRCR, &tmp);
- if (retval != ERROR_OK)
- return retval;
+ mem_ap_read_atomic_u32(armv7m->debug_ap, NVIC_AIRCR, &tmp);
}
}
target->state = TARGET_RESET;
- jtag_add_sleep(50000);
+ jtag_sleep(50000);
- register_cache_invalidate(cortex_m3->armv7m.core_cache);
+ register_cache_invalidate(cortex_m->armv7m.arm.core_cache);
- if (target->reset_halt)
- {
- if ((retval = target_halt(target)) != ERROR_OK)
+ /* now return stored error code if any */
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (target->reset_halt) {
+ retval = target_halt(target);
+ if (retval != ERROR_OK)
return retval;
}
return ERROR_OK;
}
-static int cortex_m3_deassert_reset(struct target *target)
+static int cortex_m_deassert_reset(struct target *target)
{
- LOG_DEBUG("target->state: %s",
+ struct armv7m_common *armv7m = &target_to_cm(target)->armv7m;
+
+ LOG_TARGET_DEBUG(target, "target->state: %s",
target_state_name(target));
/* deassert reset lines */
- jtag_add_reset(0, 0);
+ adapter_deassert_reset();
+
+ enum reset_types jtag_reset_config = jtag_get_reset_config();
+
+ if ((jtag_reset_config & RESET_HAS_SRST) &&
+ !(jtag_reset_config & RESET_SRST_NO_GATING) &&
+ target_was_examined(target)) {
+
+ int retval = dap_dp_init_or_reconnect(armv7m->debug_ap->dap);
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "DP initialisation failed");
+ return retval;
+ }
+ }
return ERROR_OK;
}
-static int
-cortex_m3_set_breakpoint(struct target *target, struct breakpoint *breakpoint)
+int cortex_m_set_breakpoint(struct target *target, struct breakpoint *breakpoint)
{
int retval;
- int fp_num = 0;
- uint32_t hilo;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct cortex_m3_fp_comparator *comparator_list = cortex_m3->fp_comparator_list;
+ unsigned int fp_num = 0;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct cortex_m_fp_comparator *comparator_list = cortex_m->fp_comparator_list;
- if (breakpoint->set)
- {
- LOG_WARNING("breakpoint (BPID: %d) already set", breakpoint->unique_id);
+ if (breakpoint->is_set) {
+ LOG_TARGET_WARNING(target, "breakpoint (BPID: %" PRIu32 ") already set", breakpoint->unique_id);
return ERROR_OK;
}
- if (cortex_m3->auto_bp_type)
- {
- breakpoint->type = BKPT_TYPE_BY_ADDR(breakpoint->address);
- }
-
- if (breakpoint->type == BKPT_HARD)
- {
- while (comparator_list[fp_num].used && (fp_num < cortex_m3->fp_num_code))
+ if (breakpoint->type == BKPT_HARD) {
+ uint32_t fpcr_value;
+ while (comparator_list[fp_num].used && (fp_num < cortex_m->fp_num_code))
fp_num++;
- if (fp_num >= cortex_m3->fp_num_code)
- {
- LOG_ERROR("Can not find free FPB Comparator!");
+ if (fp_num >= cortex_m->fp_num_code) {
+ LOG_TARGET_ERROR(target, "Can not find free FPB Comparator!");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ breakpoint_hw_set(breakpoint, fp_num);
+ fpcr_value = breakpoint->address | 1;
+ if (cortex_m->fp_rev == 0) {
+ if (breakpoint->address > 0x1FFFFFFF) {
+ LOG_TARGET_ERROR(target, "Cortex-M Flash Patch Breakpoint rev.1 "
+ "cannot handle HW breakpoint above address 0x1FFFFFFE");
+ return ERROR_FAIL;
+ }
+ uint32_t hilo;
+ hilo = (breakpoint->address & 0x2) ? FPCR_REPLACE_BKPT_HIGH : FPCR_REPLACE_BKPT_LOW;
+ fpcr_value = (fpcr_value & 0x1FFFFFFC) | hilo | 1;
+ } else if (cortex_m->fp_rev > 1) {
+ LOG_TARGET_ERROR(target, "Unhandled Cortex-M Flash Patch Breakpoint architecture revision");
return ERROR_FAIL;
}
- breakpoint->set = fp_num + 1;
- hilo = (breakpoint->address & 0x2) ? FPCR_REPLACE_BKPT_HIGH : FPCR_REPLACE_BKPT_LOW;
- comparator_list[fp_num].used = 1;
- comparator_list[fp_num].fpcr_value = (breakpoint->address & 0x1FFFFFFC) | hilo | 1;
- target_write_u32(target, comparator_list[fp_num].fpcr_address, comparator_list[fp_num].fpcr_value);
- LOG_DEBUG("fpc_num %i fpcr_value 0x%" PRIx32 "", fp_num, comparator_list[fp_num].fpcr_value);
- if (!cortex_m3->fpb_enabled)
- {
- LOG_DEBUG("FPB wasn't enabled, do it now");
- target_write_u32(target, FP_CTRL, 3);
+ comparator_list[fp_num].used = true;
+ comparator_list[fp_num].fpcr_value = fpcr_value;
+ target_write_u32(target, comparator_list[fp_num].fpcr_address,
+ comparator_list[fp_num].fpcr_value);
+ LOG_TARGET_DEBUG(target, "fpc_num %i fpcr_value 0x%" PRIx32 "",
+ fp_num,
+ comparator_list[fp_num].fpcr_value);
+ if (!cortex_m->fpb_enabled) {
+ LOG_TARGET_DEBUG(target, "FPB wasn't enabled, do it now");
+ retval = cortex_m_enable_fpb(target);
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "Failed to enable the FPB");
+ return retval;
+ }
+
+ cortex_m->fpb_enabled = true;
}
- }
- else if (breakpoint->type == BKPT_SOFT)
- {
+ } else if (breakpoint->type == BKPT_SOFT) {
uint8_t code[4];
/* NOTE: on ARMv6-M and ARMv7-M, BKPT(0xab) is used for
code);
if (retval != ERROR_OK)
return retval;
- breakpoint->set = true;
+ breakpoint->is_set = true;
}
- LOG_DEBUG("BPID: %d, Type: %d, Address: 0x%08" PRIx32 " Length: %d (set=%d)",
- breakpoint->unique_id,
- (int)(breakpoint->type),
- breakpoint->address,
- breakpoint->length,
- breakpoint->set);
+ LOG_TARGET_DEBUG(target, "BPID: %" PRIu32 ", Type: %d, Address: " TARGET_ADDR_FMT " Length: %d (n=%u)",
+ breakpoint->unique_id,
+ (int)(breakpoint->type),
+ breakpoint->address,
+ breakpoint->length,
+ (breakpoint->type == BKPT_SOFT) ? 0 : breakpoint->number);
return ERROR_OK;
}
-static int
-cortex_m3_unset_breakpoint(struct target *target, struct breakpoint *breakpoint)
+int cortex_m_unset_breakpoint(struct target *target, struct breakpoint *breakpoint)
{
int retval;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct cortex_m3_fp_comparator * comparator_list = cortex_m3->fp_comparator_list;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct cortex_m_fp_comparator *comparator_list = cortex_m->fp_comparator_list;
- if (!breakpoint->set)
- {
- LOG_WARNING("breakpoint not set");
+ if (!breakpoint->is_set) {
+ LOG_TARGET_WARNING(target, "breakpoint not set");
return ERROR_OK;
}
- LOG_DEBUG("BPID: %d, Type: %d, Address: 0x%08" PRIx32 " Length: %d (set=%d)",
- breakpoint->unique_id,
- (int)(breakpoint->type),
- breakpoint->address,
- breakpoint->length,
- breakpoint->set);
+ LOG_TARGET_DEBUG(target, "BPID: %" PRIu32 ", Type: %d, Address: " TARGET_ADDR_FMT " Length: %d (n=%u)",
+ breakpoint->unique_id,
+ (int)(breakpoint->type),
+ breakpoint->address,
+ breakpoint->length,
+ (breakpoint->type == BKPT_SOFT) ? 0 : breakpoint->number);
- if (breakpoint->type == BKPT_HARD)
- {
- int fp_num = breakpoint->set - 1;
- if ((fp_num < 0) || (fp_num >= cortex_m3->fp_num_code))
- {
- LOG_DEBUG("Invalid FP Comparator number in breakpoint");
+ if (breakpoint->type == BKPT_HARD) {
+ unsigned int fp_num = breakpoint->number;
+ if (fp_num >= cortex_m->fp_num_code) {
+ LOG_TARGET_DEBUG(target, "Invalid FP Comparator number in breakpoint");
return ERROR_OK;
}
- comparator_list[fp_num].used = 0;
+ comparator_list[fp_num].used = false;
comparator_list[fp_num].fpcr_value = 0;
- target_write_u32(target, comparator_list[fp_num].fpcr_address, comparator_list[fp_num].fpcr_value);
- }
- else
- {
+ target_write_u32(target, comparator_list[fp_num].fpcr_address,
+ comparator_list[fp_num].fpcr_value);
+ } else {
/* restore original instruction (kept in target endianness) */
- if (breakpoint->length == 4)
- {
- if ((retval = target_write_memory(target, breakpoint->address & 0xFFFFFFFE, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
- {
- return retval;
- }
- }
- else
- {
- if ((retval = target_write_memory(target, breakpoint->address & 0xFFFFFFFE, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
- {
- return retval;
- }
- }
- }
- breakpoint->set = false;
-
- return ERROR_OK;
-}
-
-static int
-cortex_m3_add_breakpoint(struct target *target, struct breakpoint *breakpoint)
-{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
-
- if (cortex_m3->auto_bp_type)
- {
- breakpoint->type = BKPT_TYPE_BY_ADDR(breakpoint->address);
-#ifdef ARMV7_GDB_HACKS
- if (breakpoint->length != 2) {
- /* XXX Hack: Replace all breakpoints with length != 2 with
- * a hardware breakpoint. */
- breakpoint->type = BKPT_HARD;
- breakpoint->length = 2;
- }
-#endif
- }
-
- if(breakpoint->type != BKPT_TYPE_BY_ADDR(breakpoint->address)) {
- if (breakpoint->type == BKPT_HARD)
- {
- LOG_INFO("flash patch comparator requested outside code memory region");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
-
- if (breakpoint->type == BKPT_SOFT)
- {
- LOG_INFO("soft breakpoint requested in code (flash) memory region");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
- }
-
- if ((breakpoint->type == BKPT_HARD) && (cortex_m3->fp_code_available < 1))
- {
- LOG_INFO("no flash patch comparator unit available for hardware breakpoint");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
-
- if ((breakpoint->length != 2))
- {
- LOG_INFO("only breakpoints of two bytes length supported");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ retval = target_write_memory(target, breakpoint->address & 0xFFFFFFFE,
+ breakpoint->length, 1,
+ breakpoint->orig_instr);
+ if (retval != ERROR_OK)
+ return retval;
}
+ breakpoint->is_set = false;
- if (breakpoint->type == BKPT_HARD)
- cortex_m3->fp_code_available--;
-
- return cortex_m3_set_breakpoint(target, breakpoint);
+ return ERROR_OK;
}
-static int
-cortex_m3_remove_breakpoint(struct target *target, struct breakpoint *breakpoint)
+int cortex_m_add_breakpoint(struct target *target, struct breakpoint *breakpoint)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
-
- /* REVISIT why check? FBP can be updated with core running ... */
- if (target->state != TARGET_HALTED)
- {
- LOG_WARNING("target not halted");
- return ERROR_TARGET_NOT_HALTED;
+ if (breakpoint->length == 3) {
+ LOG_TARGET_DEBUG(target, "Using a two byte breakpoint for 32bit Thumb-2 request");
+ breakpoint->length = 2;
}
- if (cortex_m3->auto_bp_type)
- {
- breakpoint->type = BKPT_TYPE_BY_ADDR(breakpoint->address);
+ if ((breakpoint->length != 2)) {
+ LOG_TARGET_INFO(target, "only breakpoints of two bytes length supported");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
- if (breakpoint->set)
- {
- cortex_m3_unset_breakpoint(target, breakpoint);
- }
+ return cortex_m_set_breakpoint(target, breakpoint);
+}
- if (breakpoint->type == BKPT_HARD)
- cortex_m3->fp_code_available++;
+int cortex_m_remove_breakpoint(struct target *target, struct breakpoint *breakpoint)
+{
+ if (!breakpoint->is_set)
+ return ERROR_OK;
- return ERROR_OK;
+ return cortex_m_unset_breakpoint(target, breakpoint);
}
-static int
-cortex_m3_set_watchpoint(struct target *target, struct watchpoint *watchpoint)
+static int cortex_m_set_watchpoint(struct target *target, struct watchpoint *watchpoint)
{
- int dwt_num = 0;
- uint32_t mask, temp;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
-
- /* watchpoint params were validated earlier */
- mask = 0;
- temp = watchpoint->length;
- while (temp) {
- temp >>= 1;
- mask++;
- }
- mask--;
+ unsigned int dwt_num = 0;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
/* REVISIT Don't fully trust these "not used" records ... users
* may set up breakpoints by hand, e.g. dual-address data value
* watchpoint using comparator #1; comparator #0 matching cycle
* count; send data trace info through ITM and TPIU; etc
*/
- struct cortex_m3_dwt_comparator *comparator;
+ struct cortex_m_dwt_comparator *comparator;
- for (comparator = cortex_m3->dwt_comparator_list;
- comparator->used && dwt_num < cortex_m3->dwt_num_comp;
- comparator++, dwt_num++)
+ for (comparator = cortex_m->dwt_comparator_list;
+ comparator->used && dwt_num < cortex_m->dwt_num_comp;
+ comparator++, dwt_num++)
continue;
- if (dwt_num >= cortex_m3->dwt_num_comp)
- {
- LOG_ERROR("Can not find free DWT Comparator");
+ if (dwt_num >= cortex_m->dwt_num_comp) {
+ LOG_TARGET_ERROR(target, "Can not find free DWT Comparator");
return ERROR_FAIL;
}
- comparator->used = 1;
- watchpoint->set = dwt_num + 1;
+ comparator->used = true;
+ watchpoint_set(watchpoint, dwt_num);
comparator->comp = watchpoint->address;
target_write_u32(target, comparator->dwt_comparator_address + 0,
- comparator->comp);
+ comparator->comp);
- comparator->mask = mask;
- target_write_u32(target, comparator->dwt_comparator_address + 4,
+ if ((cortex_m->dwt_devarch & 0x1FFFFF) != DWT_DEVARCH_ARMV8M) {
+ uint32_t mask = 0, temp;
+
+ /* watchpoint params were validated earlier */
+ temp = watchpoint->length;
+ while (temp) {
+ temp >>= 1;
+ mask++;
+ }
+ mask--;
+
+ comparator->mask = mask;
+ target_write_u32(target, comparator->dwt_comparator_address + 4,
comparator->mask);
- switch (watchpoint->rw) {
- case WPT_READ:
- comparator->function = 5;
- break;
- case WPT_WRITE:
- comparator->function = 6;
- break;
- case WPT_ACCESS:
- comparator->function = 7;
- break;
+ switch (watchpoint->rw) {
+ case WPT_READ:
+ comparator->function = 5;
+ break;
+ case WPT_WRITE:
+ comparator->function = 6;
+ break;
+ case WPT_ACCESS:
+ comparator->function = 7;
+ break;
+ }
+ } else {
+ uint32_t data_size = watchpoint->length >> 1;
+ comparator->mask = (watchpoint->length >> 1) | 1;
+
+ switch (watchpoint->rw) {
+ case WPT_ACCESS:
+ comparator->function = 4;
+ break;
+ case WPT_WRITE:
+ comparator->function = 5;
+ break;
+ case WPT_READ:
+ comparator->function = 6;
+ break;
+ }
+ comparator->function = comparator->function | (1 << 4) |
+ (data_size << 10);
}
+
target_write_u32(target, comparator->dwt_comparator_address + 8,
- comparator->function);
+ comparator->function);
- LOG_DEBUG("Watchpoint (ID %d) DWT%d 0x%08x 0x%x 0x%05x",
- watchpoint->unique_id, dwt_num,
- (unsigned) comparator->comp,
- (unsigned) comparator->mask,
- (unsigned) comparator->function);
+ LOG_TARGET_DEBUG(target, "Watchpoint (ID %d) DWT%d 0x%08x 0x%x 0x%05x",
+ watchpoint->unique_id, dwt_num,
+ (unsigned) comparator->comp,
+ (unsigned) comparator->mask,
+ (unsigned) comparator->function);
return ERROR_OK;
}
-static int
-cortex_m3_unset_watchpoint(struct target *target, struct watchpoint *watchpoint)
+static int cortex_m_unset_watchpoint(struct target *target, struct watchpoint *watchpoint)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct cortex_m3_dwt_comparator *comparator;
- int dwt_num;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct cortex_m_dwt_comparator *comparator;
- if (!watchpoint->set)
- {
- LOG_WARNING("watchpoint (wpid: %d) not set",
- watchpoint->unique_id);
+ if (!watchpoint->is_set) {
+ LOG_TARGET_WARNING(target, "watchpoint (wpid: %d) not set",
+ watchpoint->unique_id);
return ERROR_OK;
}
- dwt_num = watchpoint->set - 1;
+ unsigned int dwt_num = watchpoint->number;
- LOG_DEBUG("Watchpoint (ID %d) DWT%d address: 0x%08x clear",
- watchpoint->unique_id, dwt_num,
- (unsigned) watchpoint->address);
+ LOG_TARGET_DEBUG(target, "Watchpoint (ID %d) DWT%u address: 0x%08x clear",
+ watchpoint->unique_id, dwt_num,
+ (unsigned) watchpoint->address);
- if ((dwt_num < 0) || (dwt_num >= cortex_m3->dwt_num_comp))
- {
- LOG_DEBUG("Invalid DWT Comparator number in watchpoint");
+ if (dwt_num >= cortex_m->dwt_num_comp) {
+ LOG_TARGET_DEBUG(target, "Invalid DWT Comparator number in watchpoint");
return ERROR_OK;
}
- comparator = cortex_m3->dwt_comparator_list + dwt_num;
- comparator->used = 0;
+ comparator = cortex_m->dwt_comparator_list + dwt_num;
+ comparator->used = false;
comparator->function = 0;
target_write_u32(target, comparator->dwt_comparator_address + 8,
- comparator->function);
+ comparator->function);
- watchpoint->set = false;
+ watchpoint->is_set = false;
return ERROR_OK;
}
-static int
-cortex_m3_add_watchpoint(struct target *target, struct watchpoint *watchpoint)
+int cortex_m_add_watchpoint(struct target *target, struct watchpoint *watchpoint)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
+ struct cortex_m_common *cortex_m = target_to_cm(target);
- if (cortex_m3->dwt_comp_available < 1)
- {
- LOG_DEBUG("no comparators?");
+ if (cortex_m->dwt_comp_available < 1) {
+ LOG_TARGET_DEBUG(target, "no comparators?");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
/* hardware doesn't support data value masking */
if (watchpoint->mask != ~(uint32_t)0) {
- LOG_DEBUG("watchpoint value masks not supported");
+ LOG_TARGET_DEBUG(target, "watchpoint value masks not supported");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
break;
}
if (mask == 16) {
- LOG_DEBUG("unsupported watchpoint length");
+ LOG_TARGET_DEBUG(target, "unsupported watchpoint length");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
if (watchpoint->address & ((1 << mask) - 1)) {
- LOG_DEBUG("watchpoint address is unaligned");
+ LOG_TARGET_DEBUG(target, "watchpoint address is unaligned");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
* the data, and another comparator (DATAVADDR0) matching addr.
*/
if (watchpoint->value) {
- LOG_DEBUG("data value watchpoint not YET supported");
+ LOG_TARGET_DEBUG(target, "data value watchpoint not YET supported");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
- cortex_m3->dwt_comp_available--;
- LOG_DEBUG("dwt_comp_available: %d", cortex_m3->dwt_comp_available);
+ cortex_m->dwt_comp_available--;
+ LOG_TARGET_DEBUG(target, "dwt_comp_available: %d", cortex_m->dwt_comp_available);
return ERROR_OK;
}
-static int
-cortex_m3_remove_watchpoint(struct target *target, struct watchpoint *watchpoint)
+int cortex_m_remove_watchpoint(struct target *target, struct watchpoint *watchpoint)
{
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
+ struct cortex_m_common *cortex_m = target_to_cm(target);
/* REVISIT why check? DWT can be updated with core running ... */
- if (target->state != TARGET_HALTED)
- {
- LOG_WARNING("target not halted");
+ if (target->state != TARGET_HALTED) {
+ LOG_TARGET_WARNING(target, "target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if (watchpoint->set)
- {
- cortex_m3_unset_watchpoint(target, watchpoint);
- }
+ if (watchpoint->is_set)
+ cortex_m_unset_watchpoint(target, watchpoint);
- cortex_m3->dwt_comp_available++;
- LOG_DEBUG("dwt_comp_available: %d", cortex_m3->dwt_comp_available);
+ cortex_m->dwt_comp_available++;
+ LOG_TARGET_DEBUG(target, "dwt_comp_available: %d", cortex_m->dwt_comp_available);
return ERROR_OK;
}
-static void cortex_m3_enable_watchpoints(struct target *target)
+static int cortex_m_hit_watchpoint(struct target *target, struct watchpoint **hit_watchpoint)
+{
+ if (target->debug_reason != DBG_REASON_WATCHPOINT)
+ return ERROR_FAIL;
+
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+
+ for (struct watchpoint *wp = target->watchpoints; wp; wp = wp->next) {
+ if (!wp->is_set)
+ continue;
+
+ unsigned int dwt_num = wp->number;
+ struct cortex_m_dwt_comparator *comparator = cortex_m->dwt_comparator_list + dwt_num;
+
+ uint32_t dwt_function;
+ int retval = target_read_u32(target, comparator->dwt_comparator_address + 8, &dwt_function);
+ if (retval != ERROR_OK)
+ return ERROR_FAIL;
+
+ /* check the MATCHED bit */
+ if (dwt_function & BIT(24)) {
+ *hit_watchpoint = wp;
+ return ERROR_OK;
+ }
+ }
+
+ return ERROR_FAIL;
+}
+
+void cortex_m_enable_watchpoints(struct target *target)
{
struct watchpoint *watchpoint = target->watchpoints;
/* set any pending watchpoints */
- while (watchpoint)
- {
- if (!watchpoint->set)
- cortex_m3_set_watchpoint(target, watchpoint);
+ while (watchpoint) {
+ if (!watchpoint->is_set)
+ cortex_m_set_watchpoint(target, watchpoint);
watchpoint = watchpoint->next;
}
}
-static int cortex_m3_load_core_reg_u32(struct target *target,
- enum armv7m_regtype type, uint32_t num, uint32_t * value)
+static int cortex_m_read_memory(struct target *target, target_addr_t address,
+ uint32_t size, uint32_t count, uint8_t *buffer)
{
- int retval;
struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
-
- /* NOTE: we "know" here that the register identifiers used
- * in the v7m header match the Cortex-M3 Debug Core Register
- * Selector values for R0..R15, xPSR, MSP, and PSP.
- */
- switch (num) {
- case 0 ... 18:
- /* read a normal core register */
- retval = cortexm3_dap_read_coreregister_u32(swjdp, value, num);
-
- if (retval != ERROR_OK)
- {
- LOG_ERROR("JTAG failure %i",retval);
- return ERROR_JTAG_DEVICE_ERROR;
- }
- LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "",(int)num,*value);
- break;
-
- case ARMV7M_PRIMASK:
- case ARMV7M_BASEPRI:
- case ARMV7M_FAULTMASK:
- case ARMV7M_CONTROL:
- /* Cortex-M3 packages these four registers as bitfields
- * in one Debug Core register. So say r0 and r2 docs;
- * it was removed from r1 docs, but still works.
- */
- cortexm3_dap_read_coreregister_u32(swjdp, value, 20);
-
- switch (num)
- {
- case ARMV7M_PRIMASK:
- *value = buf_get_u32((uint8_t*)value, 0, 1);
- break;
- case ARMV7M_BASEPRI:
- *value = buf_get_u32((uint8_t*)value, 8, 8);
- break;
-
- case ARMV7M_FAULTMASK:
- *value = buf_get_u32((uint8_t*)value, 16, 1);
- break;
+ if (armv7m->arm.arch == ARM_ARCH_V6M) {
+ /* armv6m does not handle unaligned memory access */
+ if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
+ return ERROR_TARGET_UNALIGNED_ACCESS;
+ }
- case ARMV7M_CONTROL:
- *value = buf_get_u32((uint8_t*)value, 24, 2);
- break;
- }
+ return mem_ap_read_buf(armv7m->debug_ap, buffer, size, count, address);
+}
- LOG_DEBUG("load from special reg %i value 0x%" PRIx32 "", (int)num, *value);
- break;
+static int cortex_m_write_memory(struct target *target, target_addr_t address,
+ uint32_t size, uint32_t count, const uint8_t *buffer)
+{
+ struct armv7m_common *armv7m = target_to_armv7m(target);
- default:
- return ERROR_INVALID_ARGUMENTS;
+ if (armv7m->arm.arch == ARM_ARCH_V6M) {
+ /* armv6m does not handle unaligned memory access */
+ if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
+ return ERROR_TARGET_UNALIGNED_ACCESS;
}
+ return mem_ap_write_buf(armv7m->debug_ap, buffer, size, count, address);
+}
+
+static int cortex_m_init_target(struct command_context *cmd_ctx,
+ struct target *target)
+{
+ armv7m_build_reg_cache(target);
+ arm_semihosting_init(target);
return ERROR_OK;
}
-static int cortex_m3_store_core_reg_u32(struct target *target,
- enum armv7m_regtype type, uint32_t num, uint32_t value)
+void cortex_m_deinit_target(struct target *target)
{
- int retval;
- uint32_t reg;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
-
-#ifdef ARMV7_GDB_HACKS
- /* If the LR register is being modified, make sure it will put us
- * in "thumb" mode, or an INVSTATE exception will occur. This is a
- * hack to deal with the fact that gdb will sometimes "forge"
- * return addresses, and doesn't set the LSB correctly (i.e., when
- * printing expressions containing function calls, it sets LR = 0.)
- * Valid exception return codes have bit 0 set too.
- */
- if (num == ARMV7M_R14)
- value |= 0x01;
-#endif
- /* NOTE: we "know" here that the register identifiers used
- * in the v7m header match the Cortex-M3 Debug Core Register
- * Selector values for R0..R15, xPSR, MSP, and PSP.
- */
- switch (num) {
- case 0 ... 18:
- retval = cortexm3_dap_write_coreregister_u32(swjdp, value, num);
- if (retval != ERROR_OK)
- {
- struct reg *r;
+ if (!armv7m->is_hla_target && armv7m->debug_ap)
+ dap_put_ap(armv7m->debug_ap);
- LOG_ERROR("JTAG failure");
- r = armv7m->core_cache->reg_list + num;
- r->dirty = r->valid;
- return ERROR_JTAG_DEVICE_ERROR;
- }
- LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", (int)num, value);
- break;
-
- case ARMV7M_PRIMASK:
- case ARMV7M_BASEPRI:
- case ARMV7M_FAULTMASK:
- case ARMV7M_CONTROL:
- /* Cortex-M3 packages these four registers as bitfields
- * in one Debug Core register. So say r0 and r2 docs;
- * it was removed from r1 docs, but still works.
- */
- cortexm3_dap_read_coreregister_u32(swjdp, ®, 20);
+ free(cortex_m->fp_comparator_list);
- switch (num)
- {
- case ARMV7M_PRIMASK:
- buf_set_u32((uint8_t*)®, 0, 1, value);
- break;
+ cortex_m_dwt_free(target);
+ armv7m_free_reg_cache(target);
- case ARMV7M_BASEPRI:
- buf_set_u32((uint8_t*)®, 8, 8, value);
- break;
+ free(target->private_config);
+ free(cortex_m);
+}
- case ARMV7M_FAULTMASK:
- buf_set_u32((uint8_t*)®, 16, 1, value);
- break;
+int cortex_m_profiling(struct target *target, uint32_t *samples,
+ uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
+{
+ struct timeval timeout, now;
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ uint32_t reg_value;
+ int retval;
- case ARMV7M_CONTROL:
- buf_set_u32((uint8_t*)®, 24, 2, value);
- break;
- }
+ retval = target_read_u32(target, DWT_PCSR, ®_value);
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "Error while reading PCSR");
+ return retval;
+ }
+ if (reg_value == 0) {
+ LOG_TARGET_INFO(target, "PCSR sampling not supported on this processor.");
+ return target_profiling_default(target, samples, max_num_samples, num_samples, seconds);
+ }
- cortexm3_dap_write_coreregister_u32(swjdp, reg, 20);
+ gettimeofday(&timeout, NULL);
+ timeval_add_time(&timeout, seconds, 0);
- LOG_DEBUG("write special reg %i value 0x%" PRIx32 " ", (int)num, value);
- break;
+ LOG_TARGET_INFO(target, "Starting Cortex-M profiling. Sampling DWT_PCSR as fast as we can...");
- default:
- return ERROR_INVALID_ARGUMENTS;
+ /* Make sure the target is running */
+ target_poll(target);
+ if (target->state == TARGET_HALTED)
+ retval = target_resume(target, 1, 0, 0, 0);
+
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "Error while resuming target");
+ return retval;
}
- return ERROR_OK;
-}
+ uint32_t sample_count = 0;
-static int cortex_m3_read_memory(struct target *target, uint32_t address,
- uint32_t size, uint32_t count, uint8_t *buffer)
-{
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
- int retval = ERROR_INVALID_ARGUMENTS;
-
- /* cortex_m3 handles unaligned memory access */
- if (count && buffer) {
- switch (size) {
- case 4:
- retval = mem_ap_read_buf_u32(swjdp, buffer, 4 * count, address);
- break;
- case 2:
- retval = mem_ap_read_buf_u16(swjdp, buffer, 2 * count, address);
- break;
- case 1:
- retval = mem_ap_read_buf_u8(swjdp, buffer, count, address);
- break;
+ for (;;) {
+ if (armv7m && armv7m->debug_ap) {
+ uint32_t read_count = max_num_samples - sample_count;
+ if (read_count > 1024)
+ read_count = 1024;
+
+ retval = mem_ap_read_buf_noincr(armv7m->debug_ap,
+ (void *)&samples[sample_count],
+ 4, read_count, DWT_PCSR);
+ sample_count += read_count;
+ } else {
+ target_read_u32(target, DWT_PCSR, &samples[sample_count++]);
}
- }
- return retval;
-}
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "Error while reading PCSR");
+ return retval;
+ }
-static int cortex_m3_write_memory(struct target *target, uint32_t address,
- uint32_t size, uint32_t count, const uint8_t *buffer)
-{
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
- int retval = ERROR_INVALID_ARGUMENTS;
- if (count && buffer) {
- switch (size) {
- case 4:
- retval = mem_ap_write_buf_u32(swjdp, buffer, 4 * count, address);
- break;
- case 2:
- retval = mem_ap_write_buf_u16(swjdp, buffer, 2 * count, address);
- break;
- case 1:
- retval = mem_ap_write_buf_u8(swjdp, buffer, count, address);
+ gettimeofday(&now, NULL);
+ if (sample_count >= max_num_samples || timeval_compare(&now, &timeout) > 0) {
+ LOG_TARGET_INFO(target, "Profiling completed. %" PRIu32 " samples.", sample_count);
break;
}
}
+ *num_samples = sample_count;
return retval;
}
-static int cortex_m3_bulk_write_memory(struct target *target, uint32_t address,
- uint32_t count, const uint8_t *buffer)
-{
- return cortex_m3_write_memory(target, address, 4, count, buffer);
-}
-
-static int cortex_m3_init_target(struct command_context *cmd_ctx,
- struct target *target)
-{
- armv7m_build_reg_cache(target);
- return ERROR_OK;
-}
/* REVISIT cache valid/dirty bits are unmaintained. We could set "valid"
* on r/w if the core is not running, and clear on resume or reset ... or
*/
struct dwt_reg_state {
- struct target *target;
- uint32_t addr;
- uint32_t value; /* scratch/cache */
+ struct target *target;
+ uint32_t addr;
+ uint8_t value[4]; /* scratch/cache */
};
-static int cortex_m3_dwt_get_reg(struct reg *reg)
+static int cortex_m_dwt_get_reg(struct reg *reg)
{
struct dwt_reg_state *state = reg->arch_info;
- return target_read_u32(state->target, state->addr, &state->value);
+ uint32_t tmp;
+ int retval = target_read_u32(state->target, state->addr, &tmp);
+ if (retval != ERROR_OK)
+ return retval;
+
+ buf_set_u32(state->value, 0, 32, tmp);
+ return ERROR_OK;
}
-static int cortex_m3_dwt_set_reg(struct reg *reg, uint8_t *buf)
+static int cortex_m_dwt_set_reg(struct reg *reg, uint8_t *buf)
{
struct dwt_reg_state *state = reg->arch_info;
}
struct dwt_reg {
- uint32_t addr;
- char *name;
- unsigned size;
+ uint32_t addr;
+ const char *name;
+ unsigned size;
};
-static struct dwt_reg dwt_base_regs[] = {
+static const struct dwt_reg dwt_base_regs[] = {
{ DWT_CTRL, "dwt_ctrl", 32, },
/* NOTE that Erratum 532314 (fixed r2p0) affects CYCCNT: it wrongly
* increments while the core is asleep.
/* plus some 8 bit counters, useful for profiling with TPIU */
};
-static struct dwt_reg dwt_comp[] = {
+static const struct dwt_reg dwt_comp[] = {
#define DWT_COMPARATOR(i) \
{ DWT_COMP0 + 0x10 * (i), "dwt_" #i "_comp", 32, }, \
{ DWT_MASK0 + 0x10 * (i), "dwt_" #i "_mask", 4, }, \
DWT_COMPARATOR(1),
DWT_COMPARATOR(2),
DWT_COMPARATOR(3),
+ DWT_COMPARATOR(4),
+ DWT_COMPARATOR(5),
+ DWT_COMPARATOR(6),
+ DWT_COMPARATOR(7),
+ DWT_COMPARATOR(8),
+ DWT_COMPARATOR(9),
+ DWT_COMPARATOR(10),
+ DWT_COMPARATOR(11),
+ DWT_COMPARATOR(12),
+ DWT_COMPARATOR(13),
+ DWT_COMPARATOR(14),
+ DWT_COMPARATOR(15),
#undef DWT_COMPARATOR
};
static const struct reg_arch_type dwt_reg_type = {
- .get = cortex_m3_dwt_get_reg,
- .set = cortex_m3_dwt_set_reg,
+ .get = cortex_m_dwt_get_reg,
+ .set = cortex_m_dwt_set_reg,
};
-static void
-cortex_m3_dwt_addreg(struct target *t, struct reg *r, struct dwt_reg *d)
+static void cortex_m_dwt_addreg(struct target *t, struct reg *r, const struct dwt_reg *d)
{
struct dwt_reg_state *state;
- state = calloc(1, sizeof *state);
+ state = calloc(1, sizeof(*state));
if (!state)
return;
state->addr = d->addr;
r->name = d->name;
r->size = d->size;
- r->value = &state->value;
+ r->value = state->value;
r->arch_info = state;
r->type = &dwt_reg_type;
}
-static void
-cortex_m3_dwt_setup(struct cortex_m3_common *cm3, struct target *target)
+static void cortex_m_dwt_setup(struct cortex_m_common *cm, struct target *target)
{
uint32_t dwtcr;
struct reg_cache *cache;
- struct cortex_m3_dwt_comparator *comparator;
- int reg, i;
+ struct cortex_m_dwt_comparator *comparator;
+ int reg;
target_read_u32(target, DWT_CTRL, &dwtcr);
+ LOG_TARGET_DEBUG(target, "DWT_CTRL: 0x%" PRIx32, dwtcr);
if (!dwtcr) {
- LOG_DEBUG("no DWT");
+ LOG_TARGET_DEBUG(target, "no DWT");
return;
}
- cm3->dwt_num_comp = (dwtcr >> 28) & 0xF;
- cm3->dwt_comp_available = cm3->dwt_num_comp;
- cm3->dwt_comparator_list = calloc(cm3->dwt_num_comp,
- sizeof(struct cortex_m3_dwt_comparator));
- if (!cm3->dwt_comparator_list) {
+ target_read_u32(target, DWT_DEVARCH, &cm->dwt_devarch);
+ LOG_TARGET_DEBUG(target, "DWT_DEVARCH: 0x%" PRIx32, cm->dwt_devarch);
+
+ cm->dwt_num_comp = (dwtcr >> 28) & 0xF;
+ cm->dwt_comp_available = cm->dwt_num_comp;
+ cm->dwt_comparator_list = calloc(cm->dwt_num_comp,
+ sizeof(struct cortex_m_dwt_comparator));
+ if (!cm->dwt_comparator_list) {
fail0:
- cm3->dwt_num_comp = 0;
- LOG_ERROR("out of mem");
+ cm->dwt_num_comp = 0;
+ LOG_TARGET_ERROR(target, "out of mem");
return;
}
- cache = calloc(1, sizeof *cache);
+ cache = calloc(1, sizeof(*cache));
if (!cache) {
fail1:
- free(cm3->dwt_comparator_list);
+ free(cm->dwt_comparator_list);
goto fail0;
}
- cache->name = "cortex-m3 dwt registers";
- cache->num_regs = 2 + cm3->dwt_num_comp * 3;
- cache->reg_list = calloc(cache->num_regs, sizeof *cache->reg_list);
+ cache->name = "Cortex-M DWT registers";
+ cache->num_regs = 2 + cm->dwt_num_comp * 3;
+ cache->reg_list = calloc(cache->num_regs, sizeof(*cache->reg_list));
if (!cache->reg_list) {
free(cache);
goto fail1;
}
for (reg = 0; reg < 2; reg++)
- cortex_m3_dwt_addreg(target, cache->reg_list + reg,
- dwt_base_regs + reg);
+ cortex_m_dwt_addreg(target, cache->reg_list + reg,
+ dwt_base_regs + reg);
- comparator = cm3->dwt_comparator_list;
- for (i = 0; i < cm3->dwt_num_comp; i++, comparator++) {
+ comparator = cm->dwt_comparator_list;
+ for (unsigned int i = 0; i < cm->dwt_num_comp; i++, comparator++) {
int j;
comparator->dwt_comparator_address = DWT_COMP0 + 0x10 * i;
for (j = 0; j < 3; j++, reg++)
- cortex_m3_dwt_addreg(target, cache->reg_list + reg,
- dwt_comp + 3 * i + j);
+ cortex_m_dwt_addreg(target, cache->reg_list + reg,
+ dwt_comp + 3 * i + j);
+
+ /* make sure we clear any watchpoints enabled on the target */
+ target_write_u32(target, comparator->dwt_comparator_address + 8, 0);
}
*register_get_last_cache_p(&target->reg_cache) = cache;
- cm3->dwt_cache = cache;
+ cm->dwt_cache = cache;
- LOG_DEBUG("DWT dwtcr 0x%" PRIx32 ", comp %d, watch%s",
- dwtcr, cm3->dwt_num_comp,
- (dwtcr & (0xf << 24)) ? " only" : "/trigger");
+ LOG_TARGET_DEBUG(target, "DWT dwtcr 0x%" PRIx32 ", comp %d, watch%s",
+ dwtcr, cm->dwt_num_comp,
+ (dwtcr & (0xf << 24)) ? " only" : "/trigger");
/* REVISIT: if num_comp > 1, check whether comparator #1 can
* implement single-address data value watchpoints ... so we
*/
}
-static int cortex_m3_examine(struct target *target)
+static void cortex_m_dwt_free(struct target *target)
+{
+ struct cortex_m_common *cm = target_to_cm(target);
+ struct reg_cache *cache = cm->dwt_cache;
+
+ free(cm->dwt_comparator_list);
+ cm->dwt_comparator_list = NULL;
+ cm->dwt_num_comp = 0;
+
+ if (cache) {
+ register_unlink_cache(&target->reg_cache, cache);
+
+ if (cache->reg_list) {
+ for (size_t i = 0; i < cache->num_regs; i++)
+ free(cache->reg_list[i].arch_info);
+ free(cache->reg_list);
+ }
+ free(cache);
+ }
+ cm->dwt_cache = NULL;
+}
+
+#define MVFR0 0xe000ef40
+#define MVFR1 0xe000ef44
+
+#define MVFR0_DEFAULT_M4 0x10110021
+#define MVFR1_DEFAULT_M4 0x11000011
+
+#define MVFR0_DEFAULT_M7_SP 0x10110021
+#define MVFR0_DEFAULT_M7_DP 0x10110221
+#define MVFR1_DEFAULT_M7_SP 0x11000011
+#define MVFR1_DEFAULT_M7_DP 0x12000011
+
+static int cortex_m_find_mem_ap(struct adiv5_dap *swjdp,
+ struct adiv5_ap **debug_ap)
+{
+ if (dap_find_get_ap(swjdp, AP_TYPE_AHB3_AP, debug_ap) == ERROR_OK)
+ return ERROR_OK;
+
+ return dap_find_get_ap(swjdp, AP_TYPE_AHB5_AP, debug_ap);
+}
+
+int cortex_m_examine(struct target *target)
{
int retval;
- uint32_t cpuid, fpcr;
- int i;
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap;
+ uint32_t cpuid, fpcr, mvfr0, mvfr1;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct adiv5_dap *swjdp = cortex_m->armv7m.arm.dap;
+ struct armv7m_common *armv7m = target_to_armv7m(target);
- if ((retval = ahbap_debugport_init(swjdp)) != ERROR_OK)
- return retval;
+ /* hla_target shares the examine handler but does not support
+ * all its calls */
+ if (!armv7m->is_hla_target) {
+ if (armv7m->debug_ap) {
+ dap_put_ap(armv7m->debug_ap);
+ armv7m->debug_ap = NULL;
+ }
- if (!target_was_examined(target))
- {
+ if (cortex_m->apsel == DP_APSEL_INVALID) {
+ /* Search for the MEM-AP */
+ retval = cortex_m_find_mem_ap(swjdp, &armv7m->debug_ap);
+ if (retval != ERROR_OK) {
+ LOG_TARGET_ERROR(target, "Could not find MEM-AP to control the core");
+ return retval;
+ }
+ } else {
+ armv7m->debug_ap = dap_get_ap(swjdp, cortex_m->apsel);
+ if (!armv7m->debug_ap) {
+ LOG_ERROR("Cannot get AP");
+ return ERROR_FAIL;
+ }
+ }
+
+ armv7m->debug_ap->memaccess_tck = 8;
+
+ retval = mem_ap_init(armv7m->debug_ap);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ if (!target_was_examined(target)) {
target_set_examined(target);
/* Read from Device Identification Registers */
if (retval != ERROR_OK)
return retval;
- if (((cpuid >> 4) & 0xc3f) == 0xc23)
- LOG_DEBUG("Cortex-M3 r%" PRId8 "p%" PRId8 " processor detected",
- (uint8_t)((cpuid >> 20) & 0xf), (uint8_t)((cpuid >> 0) & 0xf));
- LOG_DEBUG("cpuid: 0x%8.8" PRIx32 "", cpuid);
+ /* Get ARCH and CPU types */
+ const enum cortex_m_partno core_partno = (cpuid & ARM_CPUID_PARTNO_MASK) >> ARM_CPUID_PARTNO_POS;
+
+ for (unsigned int n = 0; n < ARRAY_SIZE(cortex_m_parts); n++) {
+ if (core_partno == cortex_m_parts[n].partno) {
+ cortex_m->core_info = &cortex_m_parts[n];
+ break;
+ }
+ }
+
+ if (!cortex_m->core_info) {
+ LOG_TARGET_ERROR(target, "Cortex-M PARTNO 0x%x is unrecognized", core_partno);
+ return ERROR_FAIL;
+ }
+
+ armv7m->arm.arch = cortex_m->core_info->arch;
+
+ LOG_TARGET_INFO(target, "%s r%" PRId8 "p%" PRId8 " processor detected",
+ cortex_m->core_info->name,
+ (uint8_t)((cpuid >> 20) & 0xf),
+ (uint8_t)((cpuid >> 0) & 0xf));
+
+ cortex_m->maskints_erratum = false;
+ if (core_partno == CORTEX_M7_PARTNO) {
+ uint8_t rev, patch;
+ rev = (cpuid >> 20) & 0xf;
+ patch = (cpuid >> 0) & 0xf;
+ if ((rev == 0) && (patch < 2)) {
+ LOG_TARGET_WARNING(target, "Silicon bug: single stepping may enter pending exception handler!");
+ cortex_m->maskints_erratum = true;
+ }
+ }
+ LOG_TARGET_DEBUG(target, "cpuid: 0x%8.8" PRIx32 "", cpuid);
+
+ if (cortex_m->core_info->flags & CORTEX_M_F_HAS_FPV4) {
+ target_read_u32(target, MVFR0, &mvfr0);
+ target_read_u32(target, MVFR1, &mvfr1);
+
+ /* test for floating point feature on Cortex-M4 */
+ if ((mvfr0 == MVFR0_DEFAULT_M4) && (mvfr1 == MVFR1_DEFAULT_M4)) {
+ LOG_TARGET_DEBUG(target, "%s floating point feature FPv4_SP found", cortex_m->core_info->name);
+ armv7m->fp_feature = FPV4_SP;
+ }
+ } else if (cortex_m->core_info->flags & CORTEX_M_F_HAS_FPV5) {
+ target_read_u32(target, MVFR0, &mvfr0);
+ target_read_u32(target, MVFR1, &mvfr1);
+
+ /* test for floating point features on Cortex-M7 */
+ if ((mvfr0 == MVFR0_DEFAULT_M7_SP) && (mvfr1 == MVFR1_DEFAULT_M7_SP)) {
+ LOG_TARGET_DEBUG(target, "%s floating point feature FPv5_SP found", cortex_m->core_info->name);
+ armv7m->fp_feature = FPV5_SP;
+ } else if ((mvfr0 == MVFR0_DEFAULT_M7_DP) && (mvfr1 == MVFR1_DEFAULT_M7_DP)) {
+ LOG_TARGET_DEBUG(target, "%s floating point feature FPv5_DP found", cortex_m->core_info->name);
+ armv7m->fp_feature = FPV5_DP;
+ }
+ }
+
+ /* VECTRESET is supported only on ARMv7-M cores */
+ cortex_m->vectreset_supported = armv7m->arm.arch == ARM_ARCH_V7M;
+
+ /* Check for FPU, otherwise mark FPU register as non-existent */
+ if (armv7m->fp_feature == FP_NONE)
+ for (size_t idx = ARMV7M_FPU_FIRST_REG; idx <= ARMV7M_FPU_LAST_REG; idx++)
+ armv7m->arm.core_cache->reg_list[idx].exist = false;
+
+ if (armv7m->arm.arch != ARM_ARCH_V8M)
+ for (size_t idx = ARMV8M_FIRST_REG; idx <= ARMV8M_LAST_REG; idx++)
+ armv7m->arm.core_cache->reg_list[idx].exist = false;
+
+ if (!armv7m->is_hla_target) {
+ if (cortex_m->core_info->flags & CORTEX_M_F_TAR_AUTOINCR_BLOCK_4K)
+ /* Cortex-M3/M4 have 4096 bytes autoincrement range,
+ * s. ARM IHI 0031C: MEM-AP 7.2.2 */
+ armv7m->debug_ap->tar_autoincr_block = (1 << 12);
+ }
+
+ retval = target_read_u32(target, DCB_DHCSR, &cortex_m->dcb_dhcsr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Don't cumulate sticky S_RESET_ST at the very first read of DHCSR
+ * as S_RESET_ST may indicate a reset that happened long time ago
+ * (most probably the power-on reset before OpenOCD was started).
+ * As we are just initializing the debug system we do not need
+ * to call cortex_m_endreset_event() in the following poll.
+ */
+ if (!cortex_m->dcb_dhcsr_sticky_is_recent) {
+ cortex_m->dcb_dhcsr_sticky_is_recent = true;
+ if (cortex_m->dcb_dhcsr & S_RESET_ST) {
+ LOG_TARGET_DEBUG(target, "reset happened some time ago, ignore");
+ cortex_m->dcb_dhcsr &= ~S_RESET_ST;
+ }
+ }
+ cortex_m_cumulate_dhcsr_sticky(cortex_m, cortex_m->dcb_dhcsr);
+
+ if (!(cortex_m->dcb_dhcsr & C_DEBUGEN)) {
+ /* Enable debug requests */
+ uint32_t dhcsr = (cortex_m->dcb_dhcsr | C_DEBUGEN) & ~(C_HALT | C_STEP | C_MASKINTS);
+
+ retval = target_write_u32(target, DCB_DHCSR, DBGKEY | (dhcsr & 0x0000FFFFUL));
+ if (retval != ERROR_OK)
+ return retval;
+ cortex_m->dcb_dhcsr = dhcsr;
+ }
+
+ /* Configure trace modules */
+ retval = target_write_u32(target, DCB_DEMCR, TRCENA | armv7m->demcr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (armv7m->trace_config.itm_deferred_config)
+ armv7m_trace_itm_config(target);
/* NOTE: FPB and DWT are both optional. */
/* Setup FPB */
target_read_u32(target, FP_CTRL, &fpcr);
- cortex_m3->auto_bp_type = 1;
- cortex_m3->fp_num_code = ((fpcr >> 8) & 0x70) | ((fpcr >> 4) & 0xF); /* bits [14:12] and [7:4] */
- cortex_m3->fp_num_lit = (fpcr >> 8) & 0xF;
- cortex_m3->fp_code_available = cortex_m3->fp_num_code;
- cortex_m3->fp_comparator_list = calloc(cortex_m3->fp_num_code + cortex_m3->fp_num_lit, sizeof(struct cortex_m3_fp_comparator));
- cortex_m3->fpb_enabled = fpcr & 1;
- for (i = 0; i < cortex_m3->fp_num_code + cortex_m3->fp_num_lit; i++)
- {
- cortex_m3->fp_comparator_list[i].type = (i < cortex_m3->fp_num_code) ? FPCR_CODE : FPCR_LITERAL;
- cortex_m3->fp_comparator_list[i].fpcr_address = FP_COMP0 + 4 * i;
+ /* bits [14:12] and [7:4] */
+ cortex_m->fp_num_code = ((fpcr >> 8) & 0x70) | ((fpcr >> 4) & 0xF);
+ cortex_m->fp_num_lit = (fpcr >> 8) & 0xF;
+ /* Detect flash patch revision, see RM DDI 0403E.b page C1-817.
+ Revision is zero base, fp_rev == 1 means Rev.2 ! */
+ cortex_m->fp_rev = (fpcr >> 28) & 0xf;
+ free(cortex_m->fp_comparator_list);
+ cortex_m->fp_comparator_list = calloc(
+ cortex_m->fp_num_code + cortex_m->fp_num_lit,
+ sizeof(struct cortex_m_fp_comparator));
+ cortex_m->fpb_enabled = fpcr & 1;
+ for (unsigned int i = 0; i < cortex_m->fp_num_code + cortex_m->fp_num_lit; i++) {
+ cortex_m->fp_comparator_list[i].type =
+ (i < cortex_m->fp_num_code) ? FPCR_CODE : FPCR_LITERAL;
+ cortex_m->fp_comparator_list[i].fpcr_address = FP_COMP0 + 4 * i;
+
+ /* make sure we clear any breakpoints enabled on the target */
+ target_write_u32(target, cortex_m->fp_comparator_list[i].fpcr_address, 0);
}
- LOG_DEBUG("FPB fpcr 0x%" PRIx32 ", numcode %i, numlit %i", fpcr, cortex_m3->fp_num_code, cortex_m3->fp_num_lit);
+ LOG_TARGET_DEBUG(target, "FPB fpcr 0x%" PRIx32 ", numcode %i, numlit %i",
+ fpcr,
+ cortex_m->fp_num_code,
+ cortex_m->fp_num_lit);
/* Setup DWT */
- cortex_m3_dwt_setup(cortex_m3, target);
+ cortex_m_dwt_free(target);
+ cortex_m_dwt_setup(cortex_m, target);
/* These hardware breakpoints only work for code in flash! */
- LOG_INFO("%s: hardware has %d breakpoints, %d watchpoints",
- target_name(target),
- cortex_m3->fp_num_code,
- cortex_m3->dwt_num_comp);
+ LOG_TARGET_INFO(target, "target has %d breakpoints, %d watchpoints",
+ cortex_m->fp_num_code,
+ cortex_m->dwt_num_comp);
}
return ERROR_OK;
}
-static int cortex_m3_dcc_read(struct adiv5_dap *swjdp, uint8_t *value, uint8_t *ctrl)
+static int cortex_m_dcc_read(struct target *target, uint8_t *value, uint8_t *ctrl)
{
+ struct armv7m_common *armv7m = target_to_armv7m(target);
uint16_t dcrdr;
+ uint8_t buf[2];
int retval;
- mem_ap_read_buf_u16(swjdp, (uint8_t*)&dcrdr, 1, DCB_DCRDR);
+ retval = mem_ap_read_buf_noincr(armv7m->debug_ap, buf, 2, 1, DCB_DCRDR);
+ if (retval != ERROR_OK)
+ return retval;
+
+ dcrdr = target_buffer_get_u16(target, buf);
*ctrl = (uint8_t)dcrdr;
*value = (uint8_t)(dcrdr >> 8);
- LOG_DEBUG("data 0x%x ctrl 0x%x", *value, *ctrl);
+ LOG_TARGET_DEBUG(target, "data 0x%x ctrl 0x%x", *value, *ctrl);
/* write ack back to software dcc register
* signify we have read data */
- if (dcrdr & (1 << 0))
- {
- dcrdr = 0;
- retval = mem_ap_write_buf_u16(swjdp, (uint8_t*)&dcrdr, 1, DCB_DCRDR);
+ if (dcrdr & (1 << 0)) {
+ target_buffer_set_u16(target, buf, 0);
+ retval = mem_ap_write_buf_noincr(armv7m->debug_ap, buf, 2, 1, DCB_DCRDR);
if (retval != ERROR_OK)
return retval;
}
return ERROR_OK;
}
-static int cortex_m3_target_request_data(struct target *target,
- uint32_t size, uint8_t *buffer)
+static int cortex_m_target_request_data(struct target *target,
+ uint32_t size, uint8_t *buffer)
{
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
uint8_t data;
uint8_t ctrl;
uint32_t i;
- for (i = 0; i < (size * 4); i++)
- {
- cortex_m3_dcc_read(swjdp, &data, &ctrl);
+ for (i = 0; i < (size * 4); i++) {
+ int retval = cortex_m_dcc_read(target, &data, &ctrl);
+ if (retval != ERROR_OK)
+ return retval;
buffer[i] = data;
}
return ERROR_OK;
}
-static int cortex_m3_handle_target_request(void *priv)
+static int cortex_m_handle_target_request(void *priv)
{
struct target *target = priv;
if (!target_was_examined(target))
return ERROR_OK;
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = &armv7m->dap;
if (!target->dbg_msg_enabled)
return ERROR_OK;
- if (target->state == TARGET_RUNNING)
- {
+ if (target->state == TARGET_RUNNING) {
uint8_t data;
uint8_t ctrl;
+ int retval;
- cortex_m3_dcc_read(swjdp, &data, &ctrl);
+ retval = cortex_m_dcc_read(target, &data, &ctrl);
+ if (retval != ERROR_OK)
+ return retval;
/* check if we have data */
- if (ctrl & (1 << 0))
- {
+ if (ctrl & (1 << 0)) {
uint32_t request;
/* we assume target is quick enough */
request = data;
- cortex_m3_dcc_read(swjdp, &data, &ctrl);
- request |= (data << 8);
- cortex_m3_dcc_read(swjdp, &data, &ctrl);
- request |= (data << 16);
- cortex_m3_dcc_read(swjdp, &data, &ctrl);
- request |= (data << 24);
+ for (int i = 1; i <= 3; i++) {
+ retval = cortex_m_dcc_read(target, &data, &ctrl);
+ if (retval != ERROR_OK)
+ return retval;
+ request |= ((uint32_t)data << (i * 8));
+ }
target_request(target, request);
}
}
return ERROR_OK;
}
-static int cortex_m3_init_arch_info(struct target *target,
- struct cortex_m3_common *cortex_m3, struct jtag_tap *tap)
+static int cortex_m_init_arch_info(struct target *target,
+ struct cortex_m_common *cortex_m, struct adiv5_dap *dap)
{
- int retval;
- struct armv7m_common *armv7m = &cortex_m3->armv7m;
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
armv7m_init_arch_info(target, armv7m);
- /* prepare JTAG information for the new target */
- cortex_m3->jtag_info.tap = tap;
- cortex_m3->jtag_info.scann_size = 4;
-
/* default reset mode is to use srst if fitted
* if not it will use CORTEX_M3_RESET_VECTRESET */
- cortex_m3->soft_reset_config = CORTEX_M3_RESET_VECTRESET;
-
- armv7m->arm.dap = &armv7m->dap;
+ cortex_m->soft_reset_config = CORTEX_M_RESET_VECTRESET;
- /* Leave (only) generic DAP stuff for debugport_init(); */
- armv7m->dap.jtag_info = &cortex_m3->jtag_info;
- armv7m->dap.memaccess_tck = 8;
- /* Cortex-M3 has 4096 bytes autoincrement range */
- armv7m->dap.tar_autoincr_block = (1 << 12);
+ armv7m->arm.dap = dap;
/* register arch-specific functions */
- armv7m->examine_debug_reason = cortex_m3_examine_debug_reason;
+ armv7m->examine_debug_reason = cortex_m_examine_debug_reason;
armv7m->post_debug_entry = NULL;
armv7m->pre_restore_context = NULL;
- armv7m->load_core_reg_u32 = cortex_m3_load_core_reg_u32;
- armv7m->store_core_reg_u32 = cortex_m3_store_core_reg_u32;
+ armv7m->load_core_reg_u32 = cortex_m_load_core_reg_u32;
+ armv7m->store_core_reg_u32 = cortex_m_store_core_reg_u32;
- target_register_timer_callback(cortex_m3_handle_target_request, 1, 1, target);
-
- if ((retval = arm_jtag_setup_connection(&cortex_m3->jtag_info)) != ERROR_OK)
- {
- return retval;
- }
+ target_register_timer_callback(cortex_m_handle_target_request, 1,
+ TARGET_TIMER_TYPE_PERIODIC, target);
return ERROR_OK;
}
-static int cortex_m3_target_create(struct target *target, Jim_Interp *interp)
+static int cortex_m_target_create(struct target *target, Jim_Interp *interp)
{
- struct cortex_m3_common *cortex_m3 = calloc(1,sizeof(struct cortex_m3_common));
+ struct adiv5_private_config *pc;
- cortex_m3->common_magic = CORTEX_M3_COMMON_MAGIC;
- cortex_m3_init_arch_info(target, cortex_m3, target->tap);
+ pc = (struct adiv5_private_config *)target->private_config;
+ if (adiv5_verify_config(pc) != ERROR_OK)
+ return ERROR_FAIL;
+
+ struct cortex_m_common *cortex_m = calloc(1, sizeof(struct cortex_m_common));
+ if (!cortex_m) {
+ LOG_TARGET_ERROR(target, "No memory creating target");
+ return ERROR_FAIL;
+ }
+
+ cortex_m->common_magic = CORTEX_M_COMMON_MAGIC;
+ cortex_m->apsel = pc->ap_num;
+
+ cortex_m_init_arch_info(target, cortex_m, pc->dap);
return ERROR_OK;
}
/*--------------------------------------------------------------------------*/
-static int cortex_m3_verify_pointer(struct command_context *cmd_ctx,
- struct cortex_m3_common *cm3)
+static int cortex_m_verify_pointer(struct command_invocation *cmd,
+ struct cortex_m_common *cm)
{
- if (cm3->common_magic != CORTEX_M3_COMMON_MAGIC) {
- command_print(cmd_ctx, "target is not a Cortex-M3");
+ if (!is_cortex_m_with_dap_access(cm)) {
+ command_print(cmd, "target is not a Cortex-M");
return ERROR_TARGET_INVALID;
}
return ERROR_OK;
* cortexm3_target structure, which is only used with CM3 targets.
*/
-static const struct {
- char name[10];
- unsigned mask;
-} vec_ids[] = {
- { "hard_err", VC_HARDERR, },
- { "int_err", VC_INTERR, },
- { "bus_err", VC_BUSERR, },
- { "state_err", VC_STATERR, },
- { "chk_err", VC_CHKERR, },
- { "nocp_err", VC_NOCPERR, },
- { "mm_err", VC_MMERR, },
- { "reset", VC_CORERESET, },
-};
-
-COMMAND_HANDLER(handle_cortex_m3_vector_catch_command)
+COMMAND_HANDLER(handle_cortex_m_vector_catch_command)
{
struct target *target = get_current_target(CMD_CTX);
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
- struct armv7m_common *armv7m = &cortex_m3->armv7m;
- struct adiv5_dap *swjdp = &armv7m->dap;
+ struct cortex_m_common *cortex_m = target_to_cm(target);
+ struct armv7m_common *armv7m = &cortex_m->armv7m;
uint32_t demcr = 0;
int retval;
- retval = cortex_m3_verify_pointer(CMD_CTX, cortex_m3);
+ static const struct {
+ char name[10];
+ unsigned mask;
+ } vec_ids[] = {
+ { "hard_err", VC_HARDERR, },
+ { "int_err", VC_INTERR, },
+ { "bus_err", VC_BUSERR, },
+ { "state_err", VC_STATERR, },
+ { "chk_err", VC_CHKERR, },
+ { "nocp_err", VC_NOCPERR, },
+ { "mm_err", VC_MMERR, },
+ { "reset", VC_CORERESET, },
+ };
+
+ retval = cortex_m_verify_pointer(CMD, cortex_m);
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr);
+ if (!target_was_examined(target)) {
+ LOG_TARGET_ERROR(target, "Target not examined yet");
+ return ERROR_FAIL;
+ }
+
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, DCB_DEMCR, &demcr);
if (retval != ERROR_OK)
return retval;
| VC_STATERR | VC_CHKERR | VC_NOCPERR
| VC_MMERR | VC_CORERESET;
goto write;
- } else if (strcmp(CMD_ARGV[0], "none") == 0) {
+ } else if (strcmp(CMD_ARGV[0], "none") == 0)
goto write;
- }
}
while (CMD_ARGC-- > 0) {
unsigned i;
break;
}
if (i == ARRAY_SIZE(vec_ids)) {
- LOG_ERROR("No CM3 vector '%s'", CMD_ARGV[CMD_ARGC]);
- return ERROR_INVALID_ARGUMENTS;
+ LOG_TARGET_ERROR(target, "No CM3 vector '%s'", CMD_ARGV[CMD_ARGC]);
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
}
write:
demcr |= catch;
/* write, but don't assume it stuck (why not??) */
- retval = mem_ap_write_u32(swjdp, DCB_DEMCR, demcr);
+ retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DEMCR, demcr);
if (retval != ERROR_OK)
return retval;
- retval = mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr);
+ retval = mem_ap_read_atomic_u32(armv7m->debug_ap, DCB_DEMCR, &demcr);
if (retval != ERROR_OK)
return retval;
*/
}
- for (unsigned i = 0; i < ARRAY_SIZE(vec_ids); i++)
- {
- command_print(CMD_CTX, "%9s: %s", vec_ids[i].name,
+ for (unsigned i = 0; i < ARRAY_SIZE(vec_ids); i++) {
+ command_print(CMD, "%9s: %s", vec_ids[i].name,
(demcr & vec_ids[i].mask) ? "catch" : "ignore");
}
return ERROR_OK;
}
-COMMAND_HANDLER(handle_cortex_m3_mask_interrupts_command)
+COMMAND_HANDLER(handle_cortex_m_mask_interrupts_command)
{
struct target *target = get_current_target(CMD_CTX);
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
+ struct cortex_m_common *cortex_m = target_to_cm(target);
int retval;
- static const Jim_Nvp nvp_maskisr_modes[] = {
- { .name = "auto", .value = CORTEX_M3_ISRMASK_AUTO },
- { .name = "off" , .value = CORTEX_M3_ISRMASK_OFF },
- { .name = "on" , .value = CORTEX_M3_ISRMASK_ON },
- { .name = NULL , .value = -1 },
+ static const struct jim_nvp nvp_maskisr_modes[] = {
+ { .name = "auto", .value = CORTEX_M_ISRMASK_AUTO },
+ { .name = "off", .value = CORTEX_M_ISRMASK_OFF },
+ { .name = "on", .value = CORTEX_M_ISRMASK_ON },
+ { .name = "steponly", .value = CORTEX_M_ISRMASK_STEPONLY },
+ { .name = NULL, .value = -1 },
};
- const Jim_Nvp *n;
+ const struct jim_nvp *n;
- retval = cortex_m3_verify_pointer(CMD_CTX, cortex_m3);
+ retval = cortex_m_verify_pointer(CMD, cortex_m);
if (retval != ERROR_OK)
return retval;
- if (target->state != TARGET_HALTED)
- {
- command_print(CMD_CTX, "target must be stopped for \"%s\" command", CMD_NAME);
+ if (target->state != TARGET_HALTED) {
+ command_print(CMD, "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 (CMD_ARGC > 0) {
+ n = jim_nvp_name2value_simple(nvp_maskisr_modes, CMD_ARGV[0]);
+ if (!n->name)
return ERROR_COMMAND_SYNTAX_ERROR;
- }
- cortex_m3->isrmasking_mode = n->value;
-
-
- if(cortex_m3->isrmasking_mode == CORTEX_M3_ISRMASK_ON)
- {
- cortex_m3_write_debug_halt_mask(target, C_HALT | C_MASKINTS, 0);
- }
- else
- {
- cortex_m3_write_debug_halt_mask(target, C_HALT, C_MASKINTS);
- }
+ cortex_m->isrmasking_mode = n->value;
+ cortex_m_set_maskints_for_halt(target);
}
- n = Jim_Nvp_value2name_simple(nvp_maskisr_modes, cortex_m3->isrmasking_mode);
- command_print(CMD_CTX, "cortex_m3 interrupt mask %s", n->name);
+ n = jim_nvp_value2name_simple(nvp_maskisr_modes, cortex_m->isrmasking_mode);
+ command_print(CMD, "cortex_m interrupt mask %s", n->name);
return ERROR_OK;
}
-COMMAND_HANDLER(handle_cortex_m3_reset_config_command)
+COMMAND_HANDLER(handle_cortex_m_reset_config_command)
{
struct target *target = get_current_target(CMD_CTX);
- struct cortex_m3_common *cortex_m3 = target_to_cm3(target);
+ struct cortex_m_common *cortex_m = target_to_cm(target);
int retval;
char *reset_config;
- retval = cortex_m3_verify_pointer(CMD_CTX, cortex_m3);
+ retval = cortex_m_verify_pointer(CMD, cortex_m);
if (retval != ERROR_OK)
return retval;
- if (CMD_ARGC > 0)
- {
+ if (CMD_ARGC > 0) {
if (strcmp(*CMD_ARGV, "sysresetreq") == 0)
- cortex_m3->soft_reset_config = CORTEX_M3_RESET_SYSRESETREQ;
- else if (strcmp(*CMD_ARGV, "vectreset") == 0)
- cortex_m3->soft_reset_config = CORTEX_M3_RESET_VECTRESET;
+ cortex_m->soft_reset_config = CORTEX_M_RESET_SYSRESETREQ;
+
+ else if (strcmp(*CMD_ARGV, "vectreset") == 0) {
+ if (target_was_examined(target)
+ && !cortex_m->vectreset_supported)
+ LOG_TARGET_WARNING(target, "VECTRESET is not supported on your Cortex-M core!");
+ else
+ cortex_m->soft_reset_config = CORTEX_M_RESET_VECTRESET;
+
+ } else
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- switch (cortex_m3->soft_reset_config)
- {
- case CORTEX_M3_RESET_SYSRESETREQ:
+ switch (cortex_m->soft_reset_config) {
+ case CORTEX_M_RESET_SYSRESETREQ:
reset_config = "sysresetreq";
break;
- case CORTEX_M3_RESET_VECTRESET:
+ case CORTEX_M_RESET_VECTRESET:
reset_config = "vectreset";
break;
break;
}
- command_print(CMD_CTX, "cortex_m3 reset_config %s", reset_config);
+ command_print(CMD, "cortex_m reset_config %s", reset_config);
return ERROR_OK;
}
-static const struct command_registration cortex_m3_exec_command_handlers[] = {
+static const struct command_registration cortex_m_exec_command_handlers[] = {
{
.name = "maskisr",
- .handler = handle_cortex_m3_mask_interrupts_command,
+ .handler = handle_cortex_m_mask_interrupts_command,
.mode = COMMAND_EXEC,
- .help = "mask cortex_m3 interrupts",
- .usage = "['auto'|'on'|'off']",
+ .help = "mask cortex_m interrupts",
+ .usage = "['auto'|'on'|'off'|'steponly']",
},
{
.name = "vector_catch",
- .handler = handle_cortex_m3_vector_catch_command,
+ .handler = handle_cortex_m_vector_catch_command,
.mode = COMMAND_EXEC,
.help = "configure hardware vectors to trigger debug entry",
.usage = "['all'|'none'|('bus_err'|'chk_err'|...)*]",
},
{
.name = "reset_config",
- .handler = handle_cortex_m3_reset_config_command,
+ .handler = handle_cortex_m_reset_config_command,
.mode = COMMAND_ANY,
.help = "configure software reset handling",
- .usage = "['srst'|'sysresetreq'|'vectreset']",
+ .usage = "['sysresetreq'|'vectreset']",
},
COMMAND_REGISTRATION_DONE
};
-static const struct command_registration cortex_m3_command_handlers[] = {
+static const struct command_registration cortex_m_command_handlers[] = {
{
.chain = armv7m_command_handlers,
},
{
- .name = "cortex_m3",
+ .chain = armv7m_trace_command_handlers,
+ },
+ /* START_DEPRECATED_TPIU */
+ {
+ .chain = arm_tpiu_deprecated_command_handlers,
+ },
+ /* END_DEPRECATED_TPIU */
+ {
+ .name = "cortex_m",
.mode = COMMAND_EXEC,
- .help = "Cortex-M3 command group",
- .chain = cortex_m3_exec_command_handlers,
+ .help = "Cortex-M command group",
+ .usage = "",
+ .chain = cortex_m_exec_command_handlers,
+ },
+ {
+ .chain = rtt_target_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
-struct target_type cortexm3_target =
-{
- .name = "cortex_m3",
+struct target_type cortexm_target = {
+ .name = "cortex_m",
- .poll = cortex_m3_poll,
+ .poll = cortex_m_poll,
.arch_state = armv7m_arch_state,
- .target_request_data = cortex_m3_target_request_data,
+ .target_request_data = cortex_m_target_request_data,
- .halt = cortex_m3_halt,
- .resume = cortex_m3_resume,
- .step = cortex_m3_step,
+ .halt = cortex_m_halt,
+ .resume = cortex_m_resume,
+ .step = cortex_m_step,
- .assert_reset = cortex_m3_assert_reset,
- .deassert_reset = cortex_m3_deassert_reset,
- .soft_reset_halt = cortex_m3_soft_reset_halt,
+ .assert_reset = cortex_m_assert_reset,
+ .deassert_reset = cortex_m_deassert_reset,
+ .soft_reset_halt = cortex_m_soft_reset_halt,
+ .get_gdb_arch = arm_get_gdb_arch,
.get_gdb_reg_list = armv7m_get_gdb_reg_list,
- .read_memory = cortex_m3_read_memory,
- .write_memory = cortex_m3_write_memory,
- .bulk_write_memory = cortex_m3_bulk_write_memory,
+ .read_memory = cortex_m_read_memory,
+ .write_memory = cortex_m_write_memory,
.checksum_memory = armv7m_checksum_memory,
.blank_check_memory = armv7m_blank_check_memory,
.start_algorithm = armv7m_start_algorithm,
.wait_algorithm = armv7m_wait_algorithm,
- .add_breakpoint = cortex_m3_add_breakpoint,
- .remove_breakpoint = cortex_m3_remove_breakpoint,
- .add_watchpoint = cortex_m3_add_watchpoint,
- .remove_watchpoint = cortex_m3_remove_watchpoint,
+ .add_breakpoint = cortex_m_add_breakpoint,
+ .remove_breakpoint = cortex_m_remove_breakpoint,
+ .add_watchpoint = cortex_m_add_watchpoint,
+ .remove_watchpoint = cortex_m_remove_watchpoint,
+ .hit_watchpoint = cortex_m_hit_watchpoint,
+
+ .commands = cortex_m_command_handlers,
+ .target_create = cortex_m_target_create,
+ .target_jim_configure = adiv5_jim_configure,
+ .init_target = cortex_m_init_target,
+ .examine = cortex_m_examine,
+ .deinit_target = cortex_m_deinit_target,
- .commands = cortex_m3_command_handlers,
- .target_create = cortex_m3_target_create,
- .init_target = cortex_m3_init_target,
- .examine = cortex_m3_examine,
+ .profiling = cortex_m_profiling,
};
projects / fw / openocd / blobdiff