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- /***************************************************************************
- * Copyright (C) 2010 by Oleksandr Tymoshenko <gonzo@bluezbox.com> *
- * Based on mips_m4k code: *
- * Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk> *
- * Copyright (C) 2008 by David T.L. Wong *
- * *
- * 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "jtag/jtag.h"
- #include "register.h"
- #include "algorithm.h"
- #include "target.h"
- #include "breakpoints.h"
- #include "target_type.h"
- #include "avr32_jtag.h"
- #include "avr32_mem.h"
- #include "avr32_regs.h"
- #include "avr32_ap7k.h"
-
- static const char * const avr32_core_reg_list[] = {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8",
- "r9", "r10", "r11", "r12", "sp", "lr", "pc", "sr"
- };
-
- static const struct avr32_core_reg
- avr32_core_reg_list_arch_info[AVR32NUMCOREREGS] = {
- {0, NULL, NULL},
- {1, NULL, NULL},
- {2, NULL, NULL},
- {3, NULL, NULL},
- {4, NULL, NULL},
- {5, NULL, NULL},
- {6, NULL, NULL},
- {7, NULL, NULL},
- {8, NULL, NULL},
- {9, NULL, NULL},
- {10, NULL, NULL},
- {11, NULL, NULL},
- {12, NULL, NULL},
- {13, NULL, NULL},
- {14, NULL, NULL},
- {15, NULL, NULL},
- {16, NULL, NULL},
- };
-
-
- static int avr32_read_core_reg(struct target *target, int num);
- static int avr32_write_core_reg(struct target *target, int num);
-
- static int avr32_ap7k_save_context(struct target *target)
- {
- int retval, i;
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- retval = avr32_jtag_read_regs(&ap7k->jtag, ap7k->core_regs);
- if (retval != ERROR_OK)
- return retval;
-
- for (i = 0; i < AVR32NUMCOREREGS; i++) {
- if (!ap7k->core_cache->reg_list[i].valid)
- avr32_read_core_reg(target, i);
- }
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_restore_context(struct target *target)
- {
- int i;
-
- /* get pointers to arch-specific information */
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- for (i = 0; i < AVR32NUMCOREREGS; i++) {
- if (ap7k->core_cache->reg_list[i].dirty)
- avr32_write_core_reg(target, i);
- }
-
- /* write core regs */
- avr32_jtag_write_regs(&ap7k->jtag, ap7k->core_regs);
-
- return ERROR_OK;
- }
-
- static int avr32_read_core_reg(struct target *target, int num)
- {
- uint32_t reg_value;
-
- /* get pointers to arch-specific information */
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- if ((num < 0) || (num >= AVR32NUMCOREREGS))
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- reg_value = ap7k->core_regs[num];
- buf_set_u32(ap7k->core_cache->reg_list[num].value, 0, 32, reg_value);
- ap7k->core_cache->reg_list[num].valid = true;
- ap7k->core_cache->reg_list[num].dirty = false;
-
- return ERROR_OK;
- }
-
- static int avr32_write_core_reg(struct target *target, int num)
- {
- uint32_t reg_value;
-
- /* get pointers to arch-specific information */
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- if ((num < 0) || (num >= AVR32NUMCOREREGS))
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- reg_value = buf_get_u32(ap7k->core_cache->reg_list[num].value, 0, 32);
- ap7k->core_regs[num] = reg_value;
- LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", num, reg_value);
- ap7k->core_cache->reg_list[num].valid = true;
- ap7k->core_cache->reg_list[num].dirty = false;
-
- return ERROR_OK;
- }
-
- static int avr32_get_core_reg(struct reg *reg)
- {
- int retval;
- struct avr32_core_reg *avr32_reg = reg->arch_info;
- struct target *target = avr32_reg->target;
-
- if (target->state != TARGET_HALTED)
- return ERROR_TARGET_NOT_HALTED;
-
- retval = avr32_read_core_reg(target, avr32_reg->num);
-
- return retval;
- }
-
- static int avr32_set_core_reg(struct reg *reg, uint8_t *buf)
- {
- struct avr32_core_reg *avr32_reg = reg->arch_info;
- struct target *target = avr32_reg->target;
- uint32_t value = buf_get_u32(buf, 0, 32);
-
- if (target->state != TARGET_HALTED)
- return ERROR_TARGET_NOT_HALTED;
-
- buf_set_u32(reg->value, 0, 32, value);
- reg->dirty = true;
- reg->valid = true;
-
- return ERROR_OK;
- }
-
- static const struct reg_arch_type avr32_reg_type = {
- .get = avr32_get_core_reg,
- .set = avr32_set_core_reg,
- };
-
- static struct reg_cache *avr32_build_reg_cache(struct target *target)
- {
- int num_regs = AVR32NUMCOREREGS;
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
- struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
- struct reg_cache *cache = malloc(sizeof(struct reg_cache));
- struct reg *reg_list = calloc(num_regs, sizeof(struct reg));
- struct avr32_core_reg *arch_info =
- malloc(sizeof(struct avr32_core_reg) * num_regs);
- int i;
-
- /* Build the process context cache */
- cache->name = "avr32 registers";
- cache->next = NULL;
- cache->reg_list = reg_list;
- cache->num_regs = num_regs;
- (*cache_p) = cache;
- ap7k->core_cache = cache;
-
- for (i = 0; i < num_regs; i++) {
- arch_info[i] = avr32_core_reg_list_arch_info[i];
- arch_info[i].target = target;
- arch_info[i].avr32_common = ap7k;
- reg_list[i].name = avr32_core_reg_list[i];
- reg_list[i].size = 32;
- reg_list[i].value = calloc(1, 4);
- reg_list[i].dirty = false;
- reg_list[i].valid = false;
- reg_list[i].type = &avr32_reg_type;
- reg_list[i].arch_info = &arch_info[i];
- }
-
- return cache;
- }
-
- static int avr32_ap7k_debug_entry(struct target *target)
- {
-
- uint32_t dpc, dinst;
- int retval;
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- retval = avr32_jtag_nexus_read(&ap7k->jtag, AVR32_OCDREG_DPC, &dpc);
- if (retval != ERROR_OK)
- return retval;
-
- retval = avr32_jtag_nexus_read(&ap7k->jtag, AVR32_OCDREG_DINST, &dinst);
- if (retval != ERROR_OK)
- return retval;
-
- ap7k->jtag.dpc = dpc;
-
- avr32_ap7k_save_context(target);
-
- return ERROR_OK;
- }
-
-
- static int avr32_ap7k_poll(struct target *target)
- {
- uint32_t ds;
- int retval;
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- retval = avr32_jtag_nexus_read(&ap7k->jtag, AVR32_OCDREG_DS, &ds);
- if (retval != ERROR_OK)
- return retval;
-
- /* check for processor halted */
- if (ds & OCDREG_DS_DBA) {
- if ((target->state == TARGET_RUNNING) || (target->state == TARGET_RESET)) {
- target->state = TARGET_HALTED;
-
- retval = avr32_ap7k_debug_entry(target);
- if (retval != ERROR_OK)
- return retval;
-
- target_call_event_callbacks(target, TARGET_EVENT_HALTED);
- } else if (target->state == TARGET_DEBUG_RUNNING) {
- target->state = TARGET_HALTED;
-
- retval = avr32_ap7k_debug_entry(target);
- if (retval != ERROR_OK)
- return retval;
-
- target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
- }
- } else
- target->state = TARGET_RUNNING;
-
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_halt(struct target *target)
- {
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- LOG_DEBUG("target->state: %s",
- target_state_name(target));
-
- 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()) {
- LOG_ERROR("can't request a halt while in reset if nSRST pulls nTRST");
- return ERROR_TARGET_FAILURE;
- } else {
- target->debug_reason = DBG_REASON_DBGRQ;
-
- return ERROR_OK;
- }
- }
-
-
- avr32_ocd_setbits(&ap7k->jtag, AVR32_OCDREG_DC, OCDREG_DC_DBR);
- target->debug_reason = DBG_REASON_DBGRQ;
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_assert_reset(struct target *target)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_deassert_reset(struct target *target)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_resume(struct target *target, int current,
- target_addr_t address, int handle_breakpoints, int debug_execution)
- {
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
- struct breakpoint *breakpoint = NULL;
- uint32_t resume_pc;
- int retval;
-
- if (target->state != TARGET_HALTED) {
- LOG_WARNING("target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (!debug_execution) {
- target_free_all_working_areas(target);
- /*
- avr32_ap7k_enable_breakpoints(target);
- avr32_ap7k_enable_watchpoints(target);
- */
- }
-
- /* current = 1: continue on current pc, otherwise continue at <address> */
- if (!current) {
- #if 0
- if (retval != ERROR_OK)
- return retval;
- #endif
- }
-
- resume_pc = buf_get_u32(ap7k->core_cache->reg_list[AVR32_REG_PC].value, 0, 32);
- avr32_ap7k_restore_context(target);
-
- /* the front-end may request us not to handle breakpoints */
- if (handle_breakpoints) {
- /* Single step past breakpoint at current address */
- breakpoint = breakpoint_find(target, resume_pc);
- if (breakpoint) {
- LOG_DEBUG("unset breakpoint at 0x%8.8" TARGET_PRIxADDR "", breakpoint->address);
- #if 0
- avr32_ap7k_unset_breakpoint(target, breakpoint);
- avr32_ap7k_single_step_core(target);
- avr32_ap7k_set_breakpoint(target, breakpoint);
- #endif
- }
- }
-
- #if 0
- /* enable interrupts if we are running */
- avr32_ap7k_enable_interrupts(target, !debug_execution);
-
- /* exit debug mode */
- mips_ejtag_exit_debug(ejtag_info);
- #endif
-
-
- retval = avr32_ocd_clearbits(&ap7k->jtag, AVR32_OCDREG_DC,
- OCDREG_DC_DBR);
- if (retval != ERROR_OK)
- return retval;
-
- retval = avr32_jtag_exec(&ap7k->jtag, RETD);
- if (retval != ERROR_OK)
- return retval;
-
- target->debug_reason = DBG_REASON_NOTHALTED;
-
- /* registers are now invalid */
- register_cache_invalidate(ap7k->core_cache);
-
- 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 {
- 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 avr32_ap7k_step(struct target *target, int current,
- target_addr_t address, int handle_breakpoints)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_add_breakpoint(struct target *target, struct breakpoint *breakpoint)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_remove_breakpoint(struct target *target,
- struct breakpoint *breakpoint)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_add_watchpoint(struct target *target, struct watchpoint *watchpoint)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_remove_watchpoint(struct target *target,
- struct watchpoint *watchpoint)
- {
- LOG_ERROR("%s: implement me", __func__);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_read_memory(struct target *target, target_addr_t address,
- uint32_t size, uint32_t count, uint8_t *buffer)
- {
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- LOG_DEBUG("address: 0x%8.8" TARGET_PRIxADDR ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "",
- address,
- size,
- count);
-
- 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_COMMAND_SYNTAX_ERROR;
-
- if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
- return ERROR_TARGET_UNALIGNED_ACCESS;
-
- switch (size) {
- case 4:
- return avr32_jtag_read_memory32(&ap7k->jtag, address, count,
- (uint32_t *)(void *)buffer);
- break;
- case 2:
- return avr32_jtag_read_memory16(&ap7k->jtag, address, count,
- (uint16_t *)(void *)buffer);
- break;
- case 1:
- return avr32_jtag_read_memory8(&ap7k->jtag, address, count, buffer);
- default:
- break;
- }
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_write_memory(struct target *target, target_addr_t address,
- uint32_t size, uint32_t count, const uint8_t *buffer)
- {
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- LOG_DEBUG("address: 0x%8.8" TARGET_PRIxADDR ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "",
- address,
- size,
- count);
-
- 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_COMMAND_SYNTAX_ERROR;
-
- if (((size == 4) && (address & 0x3u)) || ((size == 2) && (address & 0x1u)))
- return ERROR_TARGET_UNALIGNED_ACCESS;
-
- switch (size) {
- case 4:
- return avr32_jtag_write_memory32(&ap7k->jtag, address, count,
- (uint32_t *)(void *)buffer);
- break;
- case 2:
- return avr32_jtag_write_memory16(&ap7k->jtag, address, count,
- (uint16_t *)(void *)buffer);
- break;
- case 1:
- return avr32_jtag_write_memory8(&ap7k->jtag, address, count, buffer);
- default:
- break;
- }
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_init_target(struct command_context *cmd_ctx,
- struct target *target)
- {
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- ap7k->jtag.tap = target->tap;
- avr32_build_reg_cache(target);
- return ERROR_OK;
- }
-
- static int avr32_ap7k_target_create(struct target *target, Jim_Interp *interp)
- {
- struct avr32_ap7k_common *ap7k = calloc(1, sizeof(struct
- avr32_ap7k_common));
-
- ap7k->common_magic = AP7K_COMMON_MAGIC;
- target->arch_info = ap7k;
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_examine(struct target *target)
- {
- uint32_t devid, ds;
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- if (!target_was_examined(target)) {
- target_set_examined(target);
- avr32_jtag_nexus_read(&ap7k->jtag, AVR32_OCDREG_DID, &devid);
- LOG_INFO("device id: %08" PRIx32, devid);
- avr32_ocd_setbits(&ap7k->jtag, AVR32_OCDREG_DC, OCDREG_DC_DBE);
- avr32_jtag_nexus_read(&ap7k->jtag, AVR32_OCDREG_DS, &ds);
-
- /* check for processor halted */
- if (ds & OCDREG_DS_DBA) {
- LOG_INFO("target is halted");
- target->state = TARGET_HALTED;
- } else
- target->state = TARGET_RUNNING;
- }
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_arch_state(struct target *target)
- {
- struct avr32_ap7k_common *ap7k = target_to_ap7k(target);
-
- LOG_USER("target halted due to %s, pc: 0x%8.8" PRIx32 "",
- debug_reason_name(target), ap7k->jtag.dpc);
-
- return ERROR_OK;
- }
-
- static int avr32_ap7k_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
- int *reg_list_size, enum target_register_class reg_class)
- {
- #if 0
- /* get pointers to arch-specific information */
- int i;
-
- /* include floating point registers */
- *reg_list_size = AVR32NUMCOREREGS + AVR32NUMFPREGS;
- *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
-
- for (i = 0; i < AVR32NUMCOREREGS; i++)
- (*reg_list)[i] = &mips32->core_cache->reg_list[i];
-
- /* add dummy floating points regs */
- for (i = AVR32NUMCOREREGS; i < (AVR32NUMCOREREGS + AVR32NUMFPREGS); i++)
- (*reg_list)[i] = &avr32_ap7k_gdb_dummy_fp_reg;
-
- #endif
-
- LOG_ERROR("%s: implement me", __func__);
- return ERROR_FAIL;
- }
-
- struct target_type avr32_ap7k_target = {
- .name = "avr32_ap7k",
-
- .poll = avr32_ap7k_poll,
- .arch_state = avr32_ap7k_arch_state,
-
- .halt = avr32_ap7k_halt,
- .resume = avr32_ap7k_resume,
- .step = avr32_ap7k_step,
-
- .assert_reset = avr32_ap7k_assert_reset,
- .deassert_reset = avr32_ap7k_deassert_reset,
-
- .get_gdb_reg_list = avr32_ap7k_get_gdb_reg_list,
-
- .read_memory = avr32_ap7k_read_memory,
- .write_memory = avr32_ap7k_write_memory,
- /* .checksum_memory = avr32_ap7k_checksum_memory, */
- /* .blank_check_memory = avr32_ap7k_blank_check_memory, */
-
- /* .run_algorithm = avr32_ap7k_run_algorithm, */
-
- .add_breakpoint = avr32_ap7k_add_breakpoint,
- .remove_breakpoint = avr32_ap7k_remove_breakpoint,
- .add_watchpoint = avr32_ap7k_add_watchpoint,
- .remove_watchpoint = avr32_ap7k_remove_watchpoint,
-
- .target_create = avr32_ap7k_target_create,
- .init_target = avr32_ap7k_init_target,
- .examine = avr32_ap7k_examine,
- };
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