* *
* Copyright (C) 2009 by David N. Claffey <dnclaffey@gmail.com> *
* *
+ * Copyright (C) 2011 by Drasko DRASKOVIC *
+ * drasko.draskovic@gmail.com *
+ * *
* 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 *
* 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. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
struct breakpoint *breakpoint);
static int mips_m4k_unset_breakpoint(struct target *target,
struct breakpoint *breakpoint);
+static int mips_m4k_internal_restore(struct target *target, int current,
+ target_addr_t address, int handle_breakpoints,
+ int debug_execution);
+static int mips_m4k_halt(struct target *target);
+static int mips_m4k_bulk_write_memory(struct target *target, target_addr_t address,
+ uint32_t count, const uint8_t *buffer);
static int mips_m4k_examine_debug_reason(struct target *target)
{
+ struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
uint32_t break_status;
int retval;
if ((target->debug_reason != DBG_REASON_DBGRQ)
- && (target->debug_reason != DBG_REASON_SINGLESTEP))
- {
- /* get info about inst breakpoint support */
- if ((retval = target_read_u32(target, EJTAG_IBS, &break_status)) != ERROR_OK)
- return retval;
- if (break_status & 0x1f)
- {
- /* we have halted on a breakpoint */
- if ((retval = target_write_u32(target, EJTAG_IBS, 0)) != ERROR_OK)
+ && (target->debug_reason != DBG_REASON_SINGLESTEP)) {
+ if (ejtag_info->debug_caps & EJTAG_DCR_IB) {
+ /* get info about inst breakpoint support */
+ retval = target_read_u32(target,
+ ejtag_info->ejtag_ibs_addr, &break_status);
+ if (retval != ERROR_OK)
return retval;
- target->debug_reason = DBG_REASON_BREAKPOINT;
+ if (break_status & 0x1f) {
+ /* we have halted on a breakpoint */
+ retval = target_write_u32(target,
+ ejtag_info->ejtag_ibs_addr, 0);
+ if (retval != ERROR_OK)
+ return retval;
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ }
}
- /* get info about data breakpoint support */
- if ((retval = target_read_u32(target, EJTAG_DBS, &break_status)) != ERROR_OK)
- return retval;
- if (break_status & 0x1f)
- {
- /* we have halted on a breakpoint */
- if ((retval = target_write_u32(target, EJTAG_DBS, 0)) != ERROR_OK)
+ if (ejtag_info->debug_caps & EJTAG_DCR_DB) {
+ /* get info about data breakpoint support */
+ retval = target_read_u32(target,
+ ejtag_info->ejtag_dbs_addr, &break_status);
+ if (retval != ERROR_OK)
return retval;
- target->debug_reason = DBG_REASON_WATCHPOINT;
+ if (break_status & 0x1f) {
+ /* we have halted on a breakpoint */
+ retval = target_write_u32(target,
+ ejtag_info->ejtag_dbs_addr, 0);
+ if (retval != ERROR_OK)
+ return retval;
+ target->debug_reason = DBG_REASON_WATCHPOINT;
+ }
}
}
{
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
- uint32_t debug_reg;
- /* read debug register */
- mips_ejtag_read_debug(ejtag_info, &debug_reg);
+ mips32_save_context(target);
+
+ /* make sure stepping disabled, SSt bit in CP0 debug register cleared */
+ mips_ejtag_config_step(ejtag_info, 0);
/* make sure break unit configured */
mips32_configure_break_unit(target);
/* attempt to find halt reason */
mips_m4k_examine_debug_reason(target);
- /* clear single step if active */
- if (debug_reg & EJTAG_DEBUG_DSS)
- {
- /* stopped due to single step - clear step bit */
- mips_ejtag_config_step(ejtag_info, 0);
- }
-
- mips32_save_context(target);
+ mips32_read_config_regs(target);
/* default to mips32 isa, it will be changed below if required */
mips32->isa_mode = MIPS32_ISA_MIPS32;
- if (ejtag_info->impcode & EJTAG_IMP_MIPS16) {
- mips32->isa_mode = buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 1);
- }
+ /* other than mips32 only and isa bit set ? */
+ if (mips32->isa_imp && buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 1))
+ mips32->isa_mode = mips32->isa_imp == 2 ? MIPS32_ISA_MIPS16E : MIPS32_ISA_MMIPS32;
LOG_DEBUG("entered debug state at PC 0x%" PRIx32 ", target->state: %s",
buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32),
return ERROR_OK;
}
+static struct target *get_mips_m4k(struct target *target, int32_t coreid)
+{
+ struct target_list *head;
+ struct target *curr;
+
+ head = target->head;
+ while (head != (struct target_list *)NULL) {
+ curr = head->target;
+ if ((curr->coreid == coreid) && (curr->state == TARGET_HALTED))
+ return curr;
+ head = head->next;
+ }
+ return target;
+}
+
+static int mips_m4k_halt_smp(struct target *target)
+{
+ int retval = ERROR_OK;
+ struct target_list *head;
+ struct target *curr;
+ head = target->head;
+ while (head != (struct target_list *)NULL) {
+ int ret = ERROR_OK;
+ curr = head->target;
+ if ((curr != target) && (curr->state != TARGET_HALTED))
+ ret = mips_m4k_halt(curr);
+
+ if (ret != ERROR_OK) {
+ LOG_ERROR("halt failed target->coreid: %" PRId32, curr->coreid);
+ retval = ret;
+ }
+ head = head->next;
+ }
+ return retval;
+}
+
+static int update_halt_gdb(struct target *target)
+{
+ int retval = ERROR_OK;
+ if (target->gdb_service->core[0] == -1) {
+ target->gdb_service->target = target;
+ target->gdb_service->core[0] = target->coreid;
+ retval = mips_m4k_halt_smp(target);
+ }
+ return retval;
+}
+
static int mips_m4k_poll(struct target *target)
{
- int retval;
+ int retval = ERROR_OK;
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
uint32_t ejtag_ctrl = ejtag_info->ejtag_ctrl;
+ enum target_state prev_target_state = target->state;
+
+ /* toggle to another core is done by gdb as follow */
+ /* maint packet J core_id */
+ /* continue */
+ /* the next polling trigger an halt event sent to gdb */
+ if ((target->state == TARGET_HALTED) && (target->smp) &&
+ (target->gdb_service) &&
+ (target->gdb_service->target == NULL)) {
+ target->gdb_service->target =
+ get_mips_m4k(target, target->gdb_service->core[1]);
+ target_call_event_callbacks(target, TARGET_EVENT_HALTED);
+ return retval;
+ }
/* read ejtag control reg */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL);
- mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
+ retval = mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
+ if (retval != ERROR_OK)
+ return retval;
+
+ ejtag_info->isa = (ejtag_ctrl & EJTAG_CTRL_DBGISA) ? 1 : 0;
/* clear this bit before handling polling
* as after reset registers will read zero */
- if (ejtag_ctrl & EJTAG_CTRL_ROCC)
- {
+ if (ejtag_ctrl & EJTAG_CTRL_ROCC) {
/* we have detected a reset, clear flag
* otherwise ejtag will not work */
ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_ROCC;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL);
- mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
+ retval = mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
+ if (retval != ERROR_OK)
+ return retval;
LOG_DEBUG("Reset Detected");
}
/* check for processor halted */
- if (ejtag_ctrl & EJTAG_CTRL_BRKST)
- {
- if ((target->state == TARGET_RUNNING) || (target->state == TARGET_RESET))
- {
+ if (ejtag_ctrl & EJTAG_CTRL_BRKST) {
+ if ((target->state != TARGET_HALTED)
+ && (target->state != TARGET_DEBUG_RUNNING)) {
+ if (target->state == TARGET_UNKNOWN)
+ LOG_DEBUG("EJTAG_CTRL_BRKST already set during server startup.");
+
+ /* OpenOCD was was probably started on the board with EJTAG_CTRL_BRKST already set
+ * (maybe put on by HALT-ing the board in the previous session).
+ *
+ * Force enable debug entry for this session.
+ */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_NORMALBOOT);
-
target->state = TARGET_HALTED;
-
- if ((retval = mips_m4k_debug_entry(target)) != ERROR_OK)
+ retval = mips_m4k_debug_entry(target);
+ if (retval != ERROR_OK)
return retval;
+ if (target->smp &&
+ ((prev_target_state == TARGET_RUNNING)
+ || (prev_target_state == TARGET_RESET))) {
+ retval = update_halt_gdb(target);
+ if (retval != ERROR_OK)
+ return retval;
+ }
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
- }
- else if (target->state == TARGET_DEBUG_RUNNING)
- {
+ } else if (target->state == TARGET_DEBUG_RUNNING) {
target->state = TARGET_HALTED;
- if ((retval = mips_m4k_debug_entry(target)) != ERROR_OK)
+ retval = mips_m4k_debug_entry(target);
+ if (retval != ERROR_OK)
return retval;
+ if (target->smp) {
+ retval = update_halt_gdb(target);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
}
- }
- else
- {
+ } else
target->state = TARGET_RUNNING;
- }
-// LOG_DEBUG("ctrl = 0x%08X", ejtag_ctrl);
+/* LOG_DEBUG("ctrl = 0x%08X", ejtag_ctrl); */
return ERROR_OK;
}
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
- LOG_DEBUG("target->state: %s",
- target_state_name(target));
+ LOG_DEBUG("target->state: %s", target_state_name(target));
- if (target->state == TARGET_HALTED)
- {
+ if (target->state == TARGET_HALTED) {
LOG_DEBUG("target was already halted");
return ERROR_OK;
}
if (target->state == TARGET_UNKNOWN)
- {
LOG_WARNING("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())
- {
+ 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");
return ERROR_TARGET_FAILURE;
- }
- else
- {
+ } else {
/* we came here in a reset_halt or reset_init sequence
- * debug entry was already prepared in mips32_prepare_reset_halt()
+ * debug entry was already prepared in mips_m4k_assert_reset()
*/
target->debug_reason = DBG_REASON_DBGRQ;
{
struct mips_m4k_common *mips_m4k = target_to_m4k(target);
struct mips_ejtag *ejtag_info = &mips_m4k->mips32.ejtag_info;
- int assert_srst = 1;
+
+ /* TODO: apply hw reset signal in not examined state */
+ if (!(target_was_examined(target))) {
+ LOG_WARNING("Reset is not asserted because the target is not examined.");
+ LOG_WARNING("Use a reset button or power cycle the target.");
+ return ERROR_TARGET_NOT_EXAMINED;
+ }
LOG_DEBUG("target->state: %s",
target_state_name(target));
enum reset_types jtag_reset_config = jtag_get_reset_config();
- if (!(jtag_reset_config & RESET_HAS_SRST))
- assert_srst = 0;
+ /* some cores support connecting while srst is asserted
+ * use that mode is it has been configured */
- if (target->reset_halt)
- {
- /* use hardware to catch reset */
- mips_ejtag_set_instr(ejtag_info, EJTAG_INST_EJTAGBOOT);
+ bool srst_asserted = false;
+
+ if (!(jtag_reset_config & RESET_SRST_PULLS_TRST) &&
+ (jtag_reset_config & RESET_SRST_NO_GATING)) {
+ jtag_add_reset(0, 1);
+ srst_asserted = true;
}
- else
- {
- mips_ejtag_set_instr(ejtag_info, EJTAG_INST_NORMALBOOT);
+
+
+ /* EJTAG before v2.5/2.6 does not support EJTAGBOOT or NORMALBOOT */
+ if (ejtag_info->ejtag_version != EJTAG_VERSION_20) {
+ if (target->reset_halt) {
+ /* use hardware to catch reset */
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_EJTAGBOOT);
+ } else
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_NORMALBOOT);
}
- if (assert_srst)
- {
+ if (jtag_reset_config & RESET_HAS_SRST) {
/* here we should issue a srst only, but we may have to assert trst as well */
if (jtag_reset_config & RESET_SRST_PULLS_TRST)
- {
jtag_add_reset(1, 1);
- }
- else
- {
+ else if (!srst_asserted)
jtag_add_reset(0, 1);
- }
- }
- else
- {
- if (mips_m4k->is_pic32mx)
- {
- uint32_t mchip_cmd;
-
+ } else if (target_has_event_action(target, TARGET_EVENT_RESET_ASSERT)) {
+ target_handle_event(target, TARGET_EVENT_RESET_ASSERT);
+ } else {
+ if (mips_m4k->is_pic32mx) {
LOG_DEBUG("Using MTAP reset to reset processor...");
/* use microchip specific MTAP reset */
mips_ejtag_set_instr(ejtag_info, MTAP_SW_MTAP);
mips_ejtag_set_instr(ejtag_info, MTAP_COMMAND);
- mchip_cmd = MCHP_ASERT_RST;
- mips_ejtag_drscan_8(ejtag_info, &mchip_cmd);
- mchip_cmd = MCHP_DE_ASSERT_RST;
- mips_ejtag_drscan_8(ejtag_info, &mchip_cmd);
+ mips_ejtag_drscan_8_out(ejtag_info, MCHP_ASERT_RST);
+ mips_ejtag_drscan_8_out(ejtag_info, MCHP_DE_ASSERT_RST);
mips_ejtag_set_instr(ejtag_info, MTAP_SW_ETAP);
- }
- else
- {
+ } else {
/* use ejtag reset - not supported by all cores */
uint32_t ejtag_ctrl = ejtag_info->ejtag_ctrl | EJTAG_CTRL_PRRST | EJTAG_CTRL_PERRST;
LOG_DEBUG("Using EJTAG reset (PRRST) to reset processor...");
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL);
- mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
+ mips_ejtag_drscan_32_out(ejtag_info, ejtag_ctrl);
}
}
register_cache_invalidate(mips_m4k->mips32.core_cache);
- if (target->reset_halt)
- {
- int retval;
- if ((retval = target_halt(target)) != ERROR_OK)
+ if (target->reset_halt) {
+ int retval = target_halt(target);
+ if (retval != ERROR_OK)
return retval;
}
static int mips_m4k_deassert_reset(struct target *target)
{
- LOG_DEBUG("target->state: %s",
- target_state_name(target));
+ LOG_DEBUG("target->state: %s", target_state_name(target));
/* deassert reset lines */
jtag_add_reset(0, 0);
return ERROR_OK;
}
-static int mips_m4k_soft_reset_halt(struct target *target)
-{
- /* TODO */
- return ERROR_OK;
-}
-
static int mips_m4k_single_step_core(struct target *target)
{
struct mips32_common *mips32 = target_to_mips32(target);
return ERROR_OK;
}
-static int mips_m4k_resume(struct target *target, int current,
- uint32_t address, int handle_breakpoints, int debug_execution)
+static int mips_m4k_restore_smp(struct target *target, uint32_t address, int handle_breakpoints)
+{
+ int retval = ERROR_OK;
+ struct target_list *head;
+ struct target *curr;
+
+ head = target->head;
+ while (head != (struct target_list *)NULL) {
+ int ret = ERROR_OK;
+ curr = head->target;
+ if ((curr != target) && (curr->state != TARGET_RUNNING)) {
+ /* resume current address , not in step mode */
+ ret = mips_m4k_internal_restore(curr, 1, address,
+ handle_breakpoints, 0);
+
+ if (ret != ERROR_OK) {
+ LOG_ERROR("target->coreid :%" PRId32 " failed to resume at address :0x%" PRIx32,
+ curr->coreid, address);
+ retval = ret;
+ }
+ }
+ head = head->next;
+ }
+ return retval;
+}
+
+static int mips_m4k_internal_restore(struct target *target, int current,
+ target_addr_t address, int handle_breakpoints, int debug_execution)
{
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
struct breakpoint *breakpoint = NULL;
uint32_t resume_pc;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if (!debug_execution)
- {
+ if (!debug_execution) {
target_free_all_working_areas(target);
mips_m4k_enable_breakpoints(target);
mips_m4k_enable_watchpoints(target);
}
/* current = 1: continue on current pc, otherwise continue at <address> */
- if (!current)
- {
+ if (!current) {
+ mips_m4k_isa_filter(mips32->isa_imp, &address);
buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32, address);
mips32->core_cache->reg_list[MIPS32_PC].dirty = 1;
mips32->core_cache->reg_list[MIPS32_PC].valid = 1;
}
- if (ejtag_info->impcode & EJTAG_IMP_MIPS16) {
+ if ((mips32->isa_imp > 1) && debug_execution) /* if more than one isa supported */
buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 1, mips32->isa_mode);
- }
- resume_pc = buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32);
+ if (!current)
+ resume_pc = address;
+ else
+ resume_pc = buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32);
mips32_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 "", breakpoint->address);
+ breakpoint = breakpoint_find(target, resume_pc);
+ if (breakpoint) {
+ LOG_DEBUG("unset breakpoint at " TARGET_ADDR_FMT "",
+ breakpoint->address);
mips_m4k_unset_breakpoint(target, breakpoint);
mips_m4k_single_step_core(target);
mips_m4k_set_breakpoint(target, breakpoint);
/* registers are now invalid */
register_cache_invalidate(mips32->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
- {
+ } 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);
return ERROR_OK;
}
+static int mips_m4k_resume(struct target *target, int current,
+ target_addr_t address, int handle_breakpoints, int debug_execution)
+{
+ int retval = ERROR_OK;
+
+ /* dummy resume for smp toggle in order to reduce gdb impact */
+ if ((target->smp) && (target->gdb_service->core[1] != -1)) {
+ /* simulate a start and halt of target */
+ target->gdb_service->target = NULL;
+ target->gdb_service->core[0] = target->gdb_service->core[1];
+ /* fake resume at next poll we play the target core[1], see poll*/
+ target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
+ return retval;
+ }
+
+ retval = mips_m4k_internal_restore(target, current, address,
+ handle_breakpoints,
+ debug_execution);
+
+ if (retval == ERROR_OK && target->smp) {
+ target->gdb_service->core[0] = -1;
+ retval = mips_m4k_restore_smp(target, address, handle_breakpoints);
+ }
+
+ return retval;
+}
+
static int mips_m4k_step(struct target *target, int current,
- uint32_t address, int handle_breakpoints)
+ target_addr_t address, int handle_breakpoints)
{
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
struct breakpoint *breakpoint = NULL;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* current = 1: continue on current pc, otherwise continue at <address> */
- if (!current)
+ if (!current) {
+ mips_m4k_isa_filter(mips32->isa_imp, &address);
buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32, address);
+ mips32->core_cache->reg_list[MIPS32_PC].dirty = 1;
+ mips32->core_cache->reg_list[MIPS32_PC].valid = 1;
+ }
/* the front-end may request us not to handle breakpoints */
if (handle_breakpoints) {
/* registers are now invalid */
register_cache_invalidate(mips32->core_cache);
+ LOG_DEBUG("target stepped ");
+ mips_m4k_debug_entry(target);
+
if (breakpoint)
mips_m4k_set_breakpoint(target, breakpoint);
- LOG_DEBUG("target stepped ");
-
- mips_m4k_debug_entry(target);
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
return ERROR_OK;
struct breakpoint *breakpoint = target->breakpoints;
/* set any pending breakpoints */
- while (breakpoint)
- {
+ while (breakpoint) {
if (breakpoint->set == 0)
mips_m4k_set_breakpoint(target, breakpoint);
breakpoint = breakpoint->next;
struct breakpoint *breakpoint)
{
struct mips32_common *mips32 = target_to_mips32(target);
- struct mips32_comparator * comparator_list = mips32->inst_break_list;
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
+ struct mips32_comparator *comparator_list = mips32->inst_break_list;
int retval;
- if (breakpoint->set)
- {
+ if (breakpoint->set) {
LOG_WARNING("breakpoint already set");
return ERROR_OK;
}
- if (breakpoint->type == BKPT_HARD)
- {
+ if (breakpoint->type == BKPT_HARD) {
int bp_num = 0;
while (comparator_list[bp_num].used && (bp_num < mips32->num_inst_bpoints))
bp_num++;
- if (bp_num >= mips32->num_inst_bpoints)
- {
- LOG_ERROR("Can not find free FP Comparator(bpid: %d)",
- breakpoint->unique_id );
- return ERROR_FAIL;
+ if (bp_num >= mips32->num_inst_bpoints) {
+ LOG_ERROR("Can not find free FP Comparator(bpid: %" PRIu32 ")",
+ breakpoint->unique_id);
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
breakpoint->set = bp_num + 1;
comparator_list[bp_num].used = 1;
comparator_list[bp_num].bp_value = breakpoint->address;
- target_write_u32(target, comparator_list[bp_num].reg_address, comparator_list[bp_num].bp_value);
- target_write_u32(target, comparator_list[bp_num].reg_address + 0x08, 0x00000000);
- target_write_u32(target, comparator_list[bp_num].reg_address + 0x18, 1);
- LOG_DEBUG("bpid: %d, bp_num %i bp_value 0x%" PRIx32 "",
+
+ if (breakpoint->length != 4) /* make sure isa bit set */
+ comparator_list[bp_num].bp_value |= 1;
+ else /* make sure isa bit cleared */
+ comparator_list[bp_num].bp_value &= ~1;
+
+ /* EJTAG 2.0 uses 30bit IBA. First 2 bits are reserved.
+ * Warning: there is no IB ASID registers in 2.0.
+ * Do not set it! :) */
+ if (ejtag_info->ejtag_version == EJTAG_VERSION_20)
+ comparator_list[bp_num].bp_value &= 0xFFFFFFFC;
+
+ target_write_u32(target, comparator_list[bp_num].reg_address,
+ comparator_list[bp_num].bp_value);
+ target_write_u32(target, comparator_list[bp_num].reg_address +
+ ejtag_info->ejtag_ibm_offs, 0x00000000);
+ target_write_u32(target, comparator_list[bp_num].reg_address +
+ ejtag_info->ejtag_ibc_offs, 1);
+ LOG_DEBUG("bpid: %" PRIu32 ", bp_num %i bp_value 0x%" PRIx32 "",
breakpoint->unique_id,
bp_num, comparator_list[bp_num].bp_value);
- }
- else if (breakpoint->type == BKPT_SOFT)
- {
- LOG_DEBUG("bpid: %d", breakpoint->unique_id );
- if (breakpoint->length == 4)
- {
+ } else if (breakpoint->type == BKPT_SOFT) {
+ LOG_DEBUG("bpid: %" PRIu32, breakpoint->unique_id);
+
+ uint32_t isa_req = breakpoint->length & 1; /* micro mips request bit */
+ uint32_t bplength = breakpoint->length & ~1; /* drop micro mips request bit for length */
+ uint32_t bpaddr = breakpoint->address & ~1; /* drop isa bit from address, if set */
+
+ if (bplength == 4) {
uint32_t verify = 0xffffffff;
+ uint32_t sdbbp32_instr = MIPS32_SDBBP(isa_req);
+ if (ejtag_info->endianness && isa_req)
+ sdbbp32_instr = SWAP16(sdbbp32_instr);
- if ((retval = target_read_memory(target, breakpoint->address, breakpoint->length, 1,
- breakpoint->orig_instr)) != ERROR_OK)
- {
- return retval;
- }
- if ((retval = target_write_u32(target, breakpoint->address, MIPS32_SDBBP)) != ERROR_OK)
- {
- return retval;
- }
+ if ((breakpoint->address & 3) == 0) { /* word alligned */
- if ((retval = target_read_u32(target, breakpoint->address, &verify)) != ERROR_OK)
- {
- return retval;
+ retval = target_read_memory(target, bpaddr, bplength, 1, breakpoint->orig_instr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_write_u32(target, bpaddr, sdbbp32_instr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_read_u32(target, bpaddr, &verify);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (verify != sdbbp32_instr)
+ verify = 0;
+
+ } else { /* 16 bit aligned */
+ retval = target_read_memory(target, bpaddr, 2, 2, breakpoint->orig_instr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ uint8_t sdbbp_buf[4];
+ target_buffer_set_u32(target, sdbbp_buf, sdbbp32_instr);
+
+ retval = target_write_memory(target, bpaddr, 2, 2, sdbbp_buf);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_read_memory(target, bpaddr, 2, 2, sdbbp_buf);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (target_buffer_get_u32(target, sdbbp_buf) != sdbbp32_instr)
+ verify = 0;
}
- if (verify != MIPS32_SDBBP)
- {
- LOG_ERROR("Unable to set 32bit breakpoint at address %08" PRIx32 " - check that memory is read/writable", breakpoint->address);
+
+ if (verify == 0) {
+ LOG_ERROR("Unable to set 32bit breakpoint at address %08" TARGET_PRIxADDR
+ " - check that memory is read/writable", breakpoint->address);
return ERROR_OK;
}
- }
- else
- {
+
+ } else {
uint16_t verify = 0xffff;
- if ((retval = target_read_memory(target, breakpoint->address, breakpoint->length, 1,
- breakpoint->orig_instr)) != ERROR_OK)
- {
+ retval = target_read_memory(target, bpaddr, bplength, 1, breakpoint->orig_instr);
+ if (retval != ERROR_OK)
return retval;
- }
- if ((retval = target_write_u16(target, breakpoint->address, MIPS16_SDBBP)) != ERROR_OK)
- {
+
+ retval = target_write_u16(target, bpaddr, MIPS16_SDBBP(isa_req));
+ if (retval != ERROR_OK)
return retval;
- }
- if ((retval = target_read_u16(target, breakpoint->address, &verify)) != ERROR_OK)
- {
+ retval = target_read_u16(target, bpaddr, &verify);
+ if (retval != ERROR_OK)
return retval;
- }
- if (verify != MIPS16_SDBBP)
- {
- LOG_ERROR("Unable to set 16bit breakpoint at address %08" PRIx32 " - check that memory is read/writable", breakpoint->address);
+
+ if (verify != MIPS16_SDBBP(isa_req)) {
+ LOG_ERROR("Unable to set 16bit breakpoint at address %08" TARGET_PRIxADDR
+ " - check that memory is read/writable", breakpoint->address);
return ERROR_OK;
}
}
{
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
struct mips32_comparator *comparator_list = mips32->inst_break_list;
int retval;
- if (!breakpoint->set)
- {
+ if (!breakpoint->set) {
LOG_WARNING("breakpoint not set");
return ERROR_OK;
}
- if (breakpoint->type == BKPT_HARD)
- {
+ if (breakpoint->type == BKPT_HARD) {
int bp_num = breakpoint->set - 1;
- if ((bp_num < 0) || (bp_num >= mips32->num_inst_bpoints))
- {
- LOG_DEBUG("Invalid FP Comparator number in breakpoint (bpid: %d)",
+ if ((bp_num < 0) || (bp_num >= mips32->num_inst_bpoints)) {
+ LOG_DEBUG("Invalid FP Comparator number in breakpoint (bpid: %" PRIu32 ")",
breakpoint->unique_id);
return ERROR_OK;
}
- LOG_DEBUG("bpid: %d - releasing hw: %d",
- breakpoint->unique_id,
- bp_num );
+ LOG_DEBUG("bpid: %" PRIu32 " - releasing hw: %d",
+ breakpoint->unique_id,
+ bp_num);
comparator_list[bp_num].used = 0;
comparator_list[bp_num].bp_value = 0;
- target_write_u32(target, comparator_list[bp_num].reg_address + 0x18, 0);
+ target_write_u32(target, comparator_list[bp_num].reg_address +
+ ejtag_info->ejtag_ibc_offs, 0);
- }
- else
- {
+ } else {
/* restore original instruction (kept in target endianness) */
- LOG_DEBUG("bpid: %d", breakpoint->unique_id);
- if (breakpoint->length == 4)
- {
- uint32_t current_instr;
-
- /* check that user program has not modified breakpoint instruction */
- if ((retval = target_read_memory(target, breakpoint->address, 4, 1,
- (uint8_t*)¤t_instr)) != ERROR_OK)
- {
- return retval;
- }
- if (current_instr == MIPS32_SDBBP)
- {
- if ((retval = target_write_memory(target, breakpoint->address, 4, 1,
- breakpoint->orig_instr)) != ERROR_OK)
- {
+ uint32_t isa_req = breakpoint->length & 1;
+ uint32_t bplength = breakpoint->length & ~1;
+ uint8_t current_instr[4];
+ LOG_DEBUG("bpid: %" PRIu32, breakpoint->unique_id);
+ if (bplength == 4) {
+ uint32_t sdbbp32_instr = MIPS32_SDBBP(isa_req);
+ if (ejtag_info->endianness && isa_req)
+ sdbbp32_instr = SWAP16(sdbbp32_instr);
+
+ if ((breakpoint->address & 3) == 0) { /* 32bit aligned */
+ /* check that user program has not modified breakpoint instruction */
+ retval = target_read_memory(target, breakpoint->address, 4, 1, current_instr);
+ if (retval != ERROR_OK)
return retval;
+ /**
+ * target_read_memory() gets us data in _target_ endianess.
+ * If we want to use this data on the host for comparisons with some macros
+ * we must first transform it to _host_ endianess using target_buffer_get_u16().
+ */
+ if (sdbbp32_instr == target_buffer_get_u32(target, current_instr)) {
+ retval = target_write_memory(target, breakpoint->address, 4, 1,
+ breakpoint->orig_instr);
+ if (retval != ERROR_OK)
+ return retval;
}
- }
- }
- else
- {
- uint16_t current_instr;
+ } else { /* 16bit alligned */
+ retval = target_read_memory(target, breakpoint->address, 2, 2, current_instr);
+ if (retval != ERROR_OK)
+ return retval;
+ if (sdbbp32_instr == target_buffer_get_u32(target, current_instr)) {
+ retval = target_write_memory(target, breakpoint->address, 2, 2,
+ breakpoint->orig_instr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+ }
+ } else {
/* check that user program has not modified breakpoint instruction */
- if ((retval = target_read_memory(target, breakpoint->address, 2, 1,
- (uint8_t*)¤t_instr)) != ERROR_OK)
- {
+ retval = target_read_memory(target, breakpoint->address, 2, 1, current_instr);
+ if (retval != ERROR_OK)
return retval;
- }
- if (current_instr == MIPS16_SDBBP)
- {
- if ((retval = target_write_memory(target, breakpoint->address, 2, 1,
- breakpoint->orig_instr)) != ERROR_OK)
- {
+ if (target_buffer_get_u16(target, current_instr) == MIPS16_SDBBP(isa_req)) {
+ retval = target_write_memory(target, breakpoint->address, 2, 1,
+ breakpoint->orig_instr);
+ if (retval != ERROR_OK)
return retval;
- }
}
}
}
+
breakpoint->set = 0;
return ERROR_OK;
{
struct mips32_common *mips32 = target_to_mips32(target);
- if (breakpoint->type == BKPT_HARD)
- {
- if (mips32->num_inst_bpoints_avail < 1)
- {
+ if ((breakpoint->length > 5 || breakpoint->length < 2) || /* out of range */
+ (breakpoint->length == 4 && (breakpoint->address & 2)) || /* mips32 unaligned */
+ (mips32->isa_imp == MIPS32_ONLY && breakpoint->length != 4) || /* misp32 specific */
+ ((mips32->isa_imp & 1) != (breakpoint->length & 1))) /* isa not implemented */
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+
+ if (breakpoint->type == BKPT_HARD) {
+ if (mips32->num_inst_bpoints_avail < 1) {
LOG_INFO("no hardware breakpoint available");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
mips32->num_inst_bpoints_avail--;
}
- mips_m4k_set_breakpoint(target, breakpoint);
-
- return ERROR_OK;
+ return mips_m4k_set_breakpoint(target, breakpoint);
}
static int mips_m4k_remove_breakpoint(struct target *target,
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (breakpoint->set)
- {
mips_m4k_unset_breakpoint(target, breakpoint);
- }
if (breakpoint->type == BKPT_HARD)
mips32->num_inst_bpoints_avail++;
struct watchpoint *watchpoint)
{
struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
struct mips32_comparator *comparator_list = mips32->data_break_list;
int wp_num = 0;
/*
* condition evaluation
*/
int enable = EJTAG_DBCn_NOSB | EJTAG_DBCn_NOLB | EJTAG_DBCn_BE |
- (0xff << EJTAG_DBCn_BLM_SHIFT);
+ (0xff << EJTAG_DBCn_BLM_SHIFT);
- if (watchpoint->set)
- {
+ if (watchpoint->set) {
LOG_WARNING("watchpoint already set");
return ERROR_OK;
}
- while(comparator_list[wp_num].used && (wp_num < mips32->num_data_bpoints))
+ while (comparator_list[wp_num].used && (wp_num < mips32->num_data_bpoints))
wp_num++;
- if (wp_num >= mips32->num_data_bpoints)
- {
+ if (wp_num >= mips32->num_data_bpoints) {
LOG_ERROR("Can not find free FP Comparator");
return ERROR_FAIL;
}
- if (watchpoint->length != 4)
- {
+ if (watchpoint->length != 4) {
LOG_ERROR("Only watchpoints of length 4 are supported");
return ERROR_TARGET_UNALIGNED_ACCESS;
}
- if (watchpoint->address % 4)
- {
+ if (watchpoint->address % 4) {
LOG_ERROR("Watchpoints address should be word aligned");
return ERROR_TARGET_UNALIGNED_ACCESS;
}
- switch (watchpoint->rw)
- {
+ switch (watchpoint->rw) {
case WPT_READ:
enable &= ~EJTAG_DBCn_NOLB;
break;
watchpoint->set = wp_num + 1;
comparator_list[wp_num].used = 1;
comparator_list[wp_num].bp_value = watchpoint->address;
- target_write_u32(target, comparator_list[wp_num].reg_address, comparator_list[wp_num].bp_value);
- target_write_u32(target, comparator_list[wp_num].reg_address + 0x08, 0x00000000);
- target_write_u32(target, comparator_list[wp_num].reg_address + 0x10, 0x00000000);
- target_write_u32(target, comparator_list[wp_num].reg_address + 0x18, enable);
- target_write_u32(target, comparator_list[wp_num].reg_address + 0x20, 0);
+
+ /* EJTAG 2.0 uses 29bit DBA. First 3 bits are reserved.
+ * There is as well no ASID register support. */
+ if (ejtag_info->ejtag_version == EJTAG_VERSION_20)
+ comparator_list[wp_num].bp_value &= 0xFFFFFFF8;
+ else
+ target_write_u32(target, comparator_list[wp_num].reg_address +
+ ejtag_info->ejtag_dbasid_offs, 0x00000000);
+
+ target_write_u32(target, comparator_list[wp_num].reg_address,
+ comparator_list[wp_num].bp_value);
+ target_write_u32(target, comparator_list[wp_num].reg_address +
+ ejtag_info->ejtag_dbm_offs, 0x00000000);
+
+ target_write_u32(target, comparator_list[wp_num].reg_address +
+ ejtag_info->ejtag_dbc_offs, enable);
+ /* TODO: probably this value is ignored on 2.0 */
+ target_write_u32(target, comparator_list[wp_num].reg_address +
+ ejtag_info->ejtag_dbv_offs, 0);
LOG_DEBUG("wp_num %i bp_value 0x%" PRIx32 "", wp_num, comparator_list[wp_num].bp_value);
return ERROR_OK;
{
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
struct mips32_comparator *comparator_list = mips32->data_break_list;
- if (!watchpoint->set)
- {
+ if (!watchpoint->set) {
LOG_WARNING("watchpoint not set");
return ERROR_OK;
}
int wp_num = watchpoint->set - 1;
- if ((wp_num < 0) || (wp_num >= mips32->num_data_bpoints))
- {
+ if ((wp_num < 0) || (wp_num >= mips32->num_data_bpoints)) {
LOG_DEBUG("Invalid FP Comparator number in watchpoint");
return ERROR_OK;
}
comparator_list[wp_num].used = 0;
comparator_list[wp_num].bp_value = 0;
- target_write_u32(target, comparator_list[wp_num].reg_address + 0x18, 0);
+ target_write_u32(target, comparator_list[wp_num].reg_address +
+ ejtag_info->ejtag_dbc_offs, 0);
watchpoint->set = 0;
return ERROR_OK;
{
struct mips32_common *mips32 = target_to_mips32(target);
- if (mips32->num_data_bpoints_avail < 1)
- {
+ if (mips32->num_data_bpoints_avail < 1) {
LOG_INFO("no hardware watchpoints available");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (watchpoint->set)
- {
mips_m4k_unset_watchpoint(target, watchpoint);
- }
mips32->num_data_bpoints_avail++;
struct watchpoint *watchpoint = target->watchpoints;
/* set any pending watchpoints */
- while (watchpoint)
- {
+ while (watchpoint) {
if (watchpoint->set == 0)
mips_m4k_set_watchpoint(target, watchpoint);
watchpoint = watchpoint->next;
}
}
-static int mips_m4k_read_memory(struct target *target, uint32_t address,
+static int mips_m4k_read_memory(struct target *target, target_addr_t address,
uint32_t size, uint32_t count, uint8_t *buffer)
{
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
- LOG_DEBUG("address: 0x%8.8" PRIx32 ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "", address, size, count);
+ LOG_DEBUG("address: " TARGET_ADDR_FMT ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "",
+ address, size, count);
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* sanitize arguments */
if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer))
- return ERROR_INVALID_ARGUMENTS;
+ return ERROR_COMMAND_SYNTAX_ERROR;
if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
return ERROR_TARGET_UNALIGNED_ACCESS;
+ /* since we don't know if buffer is aligned, we allocate new mem that is always aligned */
+ void *t = NULL;
+
+ if (size > 1) {
+ t = malloc(count * size * sizeof(uint8_t));
+ if (t == NULL) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+ } else
+ t = buffer;
+
/* if noDMA off, use DMAACC mode for memory read */
int retval;
if (ejtag_info->impcode & EJTAG_IMP_NODMA)
- retval = mips32_pracc_read_mem(ejtag_info, address, size, count, (void *)buffer);
+ retval = mips32_pracc_read_mem(ejtag_info, address, size, count, t);
else
- retval = mips32_dmaacc_read_mem(ejtag_info, address, size, count, (void *)buffer);
- if (ERROR_OK != retval)
- return retval;
+ retval = mips32_dmaacc_read_mem(ejtag_info, address, size, count, t);
+
+ /* mips32_..._read_mem with size 4/2 returns uint32_t/uint16_t in host */
+ /* endianness, but byte array should represent target endianness */
+ if (ERROR_OK == retval) {
+ switch (size) {
+ case 4:
+ target_buffer_set_u32_array(target, buffer, count, t);
+ break;
+ case 2:
+ target_buffer_set_u16_array(target, buffer, count, t);
+ break;
+ }
+ }
- return ERROR_OK;
+ if ((size > 1) && (t != NULL))
+ free(t);
+
+ return retval;
}
-static int mips_m4k_write_memory(struct target *target, uint32_t address,
- uint32_t size, uint32_t count, uint8_t *buffer)
+static int mips_m4k_write_memory(struct target *target, target_addr_t address,
+ uint32_t size, uint32_t count, const uint8_t *buffer)
{
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
- LOG_DEBUG("address: 0x%8.8" PRIx32 ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "",
+ LOG_DEBUG("address: " TARGET_ADDR_FMT ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "",
address, size, count);
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
+ if (size == 4 && count > 32) {
+ int retval = mips_m4k_bulk_write_memory(target, address, count, buffer);
+ if (retval == ERROR_OK)
+ return ERROR_OK;
+ LOG_WARNING("Falling back to non-bulk write");
+ }
+
/* sanitize arguments */
if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer))
- return ERROR_INVALID_ARGUMENTS;
+ return ERROR_COMMAND_SYNTAX_ERROR;
if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
return ERROR_TARGET_UNALIGNED_ACCESS;
+ /** correct endianess if we have word or hword access */
+ void *t = NULL;
+ if (size > 1) {
+ /* mips32_..._write_mem with size 4/2 requires uint32_t/uint16_t in host */
+ /* endianness, but byte array represents target endianness */
+ t = malloc(count * size * sizeof(uint8_t));
+ if (t == NULL) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+
+ switch (size) {
+ case 4:
+ target_buffer_get_u32_array(target, buffer, count, (uint32_t *)t);
+ break;
+ case 2:
+ target_buffer_get_u16_array(target, buffer, count, (uint16_t *)t);
+ break;
+ }
+ buffer = t;
+ }
+
/* if noDMA off, use DMAACC mode for memory write */
+ int retval;
if (ejtag_info->impcode & EJTAG_IMP_NODMA)
- return mips32_pracc_write_mem(ejtag_info, address, size, count, (void *)buffer);
+ retval = mips32_pracc_write_mem(ejtag_info, address, size, count, buffer);
else
- return mips32_dmaacc_write_mem(ejtag_info, address, size, count, (void *)buffer);
+ retval = mips32_dmaacc_write_mem(ejtag_info, address, size, count, buffer);
+
+ if (t != NULL)
+ free(t);
+
+ if (ERROR_OK != retval)
+ return retval;
+
+ return ERROR_OK;
}
static int mips_m4k_init_target(struct command_context *cmd_ctx,
static int mips_m4k_examine(struct target *target)
{
- int retval;
struct mips_m4k_common *mips_m4k = target_to_m4k(target);
struct mips_ejtag *ejtag_info = &mips_m4k->mips32.ejtag_info;
- uint32_t idcode = 0;
- if (!target_was_examined(target))
- {
- mips_ejtag_get_idcode(ejtag_info, &idcode);
- ejtag_info->idcode = idcode;
-
- if (((idcode >> 1) & 0x7FF) == 0x29)
- {
+ if (!target_was_examined(target)) {
+ int retval = mips_ejtag_get_idcode(ejtag_info);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("idcode read failed");
+ return retval;
+ }
+ if (((ejtag_info->idcode >> 1) & 0x7FF) == 0x29) {
/* we are using a pic32mx so select ejtag port
* as it is not selected by default */
mips_ejtag_set_instr(ejtag_info, MTAP_SW_ETAP);
- LOG_DEBUG("PIC32MX Detected - using EJTAG Interface");
+ LOG_DEBUG("PIC32 Detected - using EJTAG Interface");
mips_m4k->is_pic32mx = true;
}
}
/* init rest of ejtag interface */
- if ((retval = mips_ejtag_init(ejtag_info)) != ERROR_OK)
- return retval;
-
- if ((retval = mips32_examine(target)) != ERROR_OK)
+ int retval = mips_ejtag_init(ejtag_info);
+ if (retval != ERROR_OK)
return retval;
- return ERROR_OK;
+ return mips32_examine(target);
}
-static int mips_m4k_bulk_write_memory(struct target *target, uint32_t address,
- uint32_t count, uint8_t *buffer)
+static int mips_m4k_bulk_write_memory(struct target *target, target_addr_t address,
+ uint32_t count, const uint8_t *buffer)
{
struct mips32_common *mips32 = target_to_mips32(target);
struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
- struct working_area *source;
+ struct working_area *fast_data_area;
int retval;
int write_t = 1;
- LOG_DEBUG("address: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "", address, count);
-
- if (target->state != TARGET_HALTED)
- {
- LOG_WARNING("target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
+ LOG_DEBUG("address: " TARGET_ADDR_FMT ", count: 0x%8.8" PRIx32 "",
+ address, count);
/* check alignment */
if (address & 0x3u)
return ERROR_TARGET_UNALIGNED_ACCESS;
- /* Get memory for block write handler */
- retval = target_alloc_working_area(target, MIPS32_FASTDATA_HANDLER_SIZE, &source);
+ if (mips32->fast_data_area == NULL) {
+ /* Get memory for block write handler
+ * we preserve this area between calls and gain a speed increase
+ * of about 3kb/sec when writing flash
+ * this will be released/nulled by the system when the target is resumed or reset */
+ retval = target_alloc_working_area(target,
+ MIPS32_FASTDATA_HANDLER_SIZE,
+ &mips32->fast_data_area);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("No working area available");
+ return retval;
+ }
+
+ /* reset fastadata state so the algo get reloaded */
+ ejtag_info->fast_access_save = -1;
+ }
+
+ fast_data_area = mips32->fast_data_area;
+
+ if (address <= fast_data_area->address + fast_data_area->size &&
+ fast_data_area->address <= address + count) {
+ LOG_ERROR("fast_data (" TARGET_ADDR_FMT ") is within write area "
+ "(" TARGET_ADDR_FMT "-" TARGET_ADDR_FMT ").",
+ fast_data_area->address, address, address + count);
+ LOG_ERROR("Change work-area-phys or load_image address!");
+ return ERROR_FAIL;
+ }
+
+ /* mips32_pracc_fastdata_xfer requires uint32_t in host endianness, */
+ /* but byte array represents target endianness */
+ uint32_t *t = NULL;
+ t = malloc(count * sizeof(uint32_t));
+ if (t == NULL) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+
+ target_buffer_get_u32_array(target, buffer, count, t);
+
+ retval = mips32_pracc_fastdata_xfer(ejtag_info, mips32->fast_data_area, write_t, address,
+ count, t);
+
+ if (t != NULL)
+ free(t);
+
if (retval != ERROR_OK)
- {
- LOG_WARNING("No working area available, falling back to non-bulk write");
- return mips_m4k_write_memory(target, address, 4, count, buffer);
+ LOG_ERROR("Fastdata access Failed");
+
+ return retval;
+}
+
+static int mips_m4k_verify_pointer(struct command_context *cmd_ctx,
+ struct mips_m4k_common *mips_m4k)
+{
+ if (mips_m4k->common_magic != MIPSM4K_COMMON_MAGIC) {
+ command_print(cmd_ctx, "target is not an MIPS_M4K");
+ return ERROR_TARGET_INVALID;
}
+ return ERROR_OK;
+}
- /* TAP data register is loaded LSB first (little endian) */
- if (target->endianness == TARGET_BIG_ENDIAN)
- {
- uint32_t i, t32;
- for(i = 0; i < (count * 4); i += 4)
- {
- t32 = be_to_h_u32((uint8_t *) &buffer[i]);
- h_u32_to_le(&buffer[i], t32);
+COMMAND_HANDLER(mips_m4k_handle_cp0_command)
+{
+ int retval;
+ struct target *target = get_current_target(CMD_CTX);
+ struct mips_m4k_common *mips_m4k = target_to_m4k(target);
+ struct mips_ejtag *ejtag_info = &mips_m4k->mips32.ejtag_info;
+
+ retval = mips_m4k_verify_pointer(CMD_CTX, mips_m4k);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (target->state != TARGET_HALTED) {
+ command_print(CMD_CTX, "target must be stopped for \"%s\" command", CMD_NAME);
+ return ERROR_OK;
+ }
+
+ /* two or more argument, access a single register/select (write if third argument is given) */
+ if (CMD_ARGC < 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ else {
+ uint32_t cp0_reg, cp0_sel;
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], cp0_reg);
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], cp0_sel);
+
+ if (CMD_ARGC == 2) {
+ uint32_t value;
+ retval = mips32_cp0_read(ejtag_info, &value, cp0_reg, cp0_sel);
+ if (retval != ERROR_OK) {
+ command_print(CMD_CTX,
+ "couldn't access reg %" PRIi32,
+ cp0_reg);
+ return ERROR_OK;
+ }
+ command_print(CMD_CTX, "cp0 reg %" PRIi32 ", select %" PRIi32 ": %8.8" PRIx32,
+ cp0_reg, cp0_sel, value);
+
+ } else if (CMD_ARGC == 3) {
+ uint32_t value;
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], value);
+ retval = mips32_cp0_write(ejtag_info, value, cp0_reg, cp0_sel);
+ if (retval != ERROR_OK) {
+ command_print(CMD_CTX,
+ "couldn't access cp0 reg %" PRIi32 ", select %" PRIi32,
+ cp0_reg, cp0_sel);
+ return ERROR_OK;
+ }
+ command_print(CMD_CTX, "cp0 reg %" PRIi32 ", select %" PRIi32 ": %8.8" PRIx32,
+ cp0_reg, cp0_sel, value);
}
}
- retval = mips32_pracc_fastdata_xfer(ejtag_info, source, write_t, address,
- count, (uint32_t*) buffer);
- if (retval != ERROR_OK)
- {
- /* FASTDATA access failed, try normal memory write */
- LOG_DEBUG("Fastdata access Failed, falling back to non-bulk write");
- retval = mips_m4k_write_memory(target, address, 4, count, buffer);
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(mips_m4k_handle_smp_off_command)
+{
+ struct target *target = get_current_target(CMD_CTX);
+ /* check target is an smp target */
+ struct target_list *head;
+ struct target *curr;
+ head = target->head;
+ target->smp = 0;
+ if (head != (struct target_list *)NULL) {
+ while (head != (struct target_list *)NULL) {
+ curr = head->target;
+ curr->smp = 0;
+ head = head->next;
+ }
+ /* fixes the target display to the debugger */
+ target->gdb_service->target = target;
+ }
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(mips_m4k_handle_smp_on_command)
+{
+ struct target *target = get_current_target(CMD_CTX);
+ struct target_list *head;
+ struct target *curr;
+ head = target->head;
+ if (head != (struct target_list *)NULL) {
+ target->smp = 1;
+ while (head != (struct target_list *)NULL) {
+ curr = head->target;
+ curr->smp = 1;
+ head = head->next;
+ }
}
+ return ERROR_OK;
+}
- if (source)
- target_free_working_area(target, source);
+COMMAND_HANDLER(mips_m4k_handle_smp_gdb_command)
+{
+ struct target *target = get_current_target(CMD_CTX);
+ int retval = ERROR_OK;
+ struct target_list *head;
+ head = target->head;
+ if (head != (struct target_list *)NULL) {
+ if (CMD_ARGC == 1) {
+ int coreid = 0;
+ COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], coreid);
+ if (ERROR_OK != retval)
+ return retval;
+ target->gdb_service->core[1] = coreid;
- return retval;
+ }
+ command_print(CMD_CTX, "gdb coreid %" PRId32 " -> %" PRId32, target->gdb_service->core[0]
+ , target->gdb_service->core[1]);
+ }
+ return ERROR_OK;
}
-struct target_type mips_m4k_target =
+COMMAND_HANDLER(mips_m4k_handle_scan_delay_command)
{
+ struct target *target = get_current_target(CMD_CTX);
+ struct mips_m4k_common *mips_m4k = target_to_m4k(target);
+ struct mips_ejtag *ejtag_info = &mips_m4k->mips32.ejtag_info;
+
+ if (CMD_ARGC == 1)
+ COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], ejtag_info->scan_delay);
+ else if (CMD_ARGC > 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ command_print(CMD_CTX, "scan delay: %d nsec", ejtag_info->scan_delay);
+ if (ejtag_info->scan_delay >= MIPS32_SCAN_DELAY_LEGACY_MODE) {
+ ejtag_info->mode = 0;
+ command_print(CMD_CTX, "running in legacy mode");
+ } else {
+ ejtag_info->mode = 1;
+ command_print(CMD_CTX, "running in fast queued mode");
+ }
+
+ return ERROR_OK;
+}
+
+static const struct command_registration mips_m4k_exec_command_handlers[] = {
+ {
+ .name = "cp0",
+ .handler = mips_m4k_handle_cp0_command,
+ .mode = COMMAND_EXEC,
+ .usage = "regnum [value]",
+ .help = "display/modify cp0 register",
+ },
+ {
+ .name = "smp_off",
+ .handler = mips_m4k_handle_smp_off_command,
+ .mode = COMMAND_EXEC,
+ .help = "Stop smp handling",
+ .usage = "",},
+
+ {
+ .name = "smp_on",
+ .handler = mips_m4k_handle_smp_on_command,
+ .mode = COMMAND_EXEC,
+ .help = "Restart smp handling",
+ .usage = "",
+ },
+ {
+ .name = "smp_gdb",
+ .handler = mips_m4k_handle_smp_gdb_command,
+ .mode = COMMAND_EXEC,
+ .help = "display/fix current core played to gdb",
+ .usage = "",
+ },
+ {
+ .name = "scan_delay",
+ .handler = mips_m4k_handle_scan_delay_command,
+ .mode = COMMAND_ANY,
+ .help = "display/set scan delay in nano seconds",
+ .usage = "[value]",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+const struct command_registration mips_m4k_command_handlers[] = {
+ {
+ .chain = mips32_command_handlers,
+ },
+ {
+ .name = "mips_m4k",
+ .mode = COMMAND_ANY,
+ .help = "mips_m4k command group",
+ .usage = "",
+ .chain = mips_m4k_exec_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+struct target_type mips_m4k_target = {
.name = "mips_m4k",
.poll = mips_m4k_poll,
.arch_state = mips32_arch_state,
- .target_request_data = NULL,
-
.halt = mips_m4k_halt,
.resume = mips_m4k_resume,
.step = mips_m4k_step,
.assert_reset = mips_m4k_assert_reset,
.deassert_reset = mips_m4k_deassert_reset,
- .soft_reset_halt = mips_m4k_soft_reset_halt,
.get_gdb_reg_list = mips32_get_gdb_reg_list,
.read_memory = mips_m4k_read_memory,
.write_memory = mips_m4k_write_memory,
- .bulk_write_memory = mips_m4k_bulk_write_memory,
.checksum_memory = mips32_checksum_memory,
.blank_check_memory = mips32_blank_check_memory,
.add_watchpoint = mips_m4k_add_watchpoint,
.remove_watchpoint = mips_m4k_remove_watchpoint,
+ .commands = mips_m4k_command_handlers,
.target_create = mips_m4k_target_create,
.init_target = mips_m4k_init_target,
.examine = mips_m4k_examine,
projects / openocd / blobdiff