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/***************************************************************************
* Copyright (C) 2009 by Simon Qian *
* SimonQian@SimonQian.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 *
* (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 "avrt.h"
#include "target.h"
#include "target_type.h"
#define AVR_JTAG_INS_LEN 4
/* forward declarations */
static int avr_target_create(struct target *target, Jim_Interp *interp);
static int avr_init_target(struct command_context *cmd_ctx, struct target *target);
static int avr_arch_state(struct target *target);
static int avr_poll(struct target *target);
static int avr_halt(struct target *target);
static int avr_resume(struct target *target, int current, target_addr_t address,
int handle_breakpoints, int debug_execution);
static int avr_step(struct target *target, int current, target_addr_t address,
int handle_breakpoints);
static int avr_assert_reset(struct target *target);
static int avr_deassert_reset(struct target *target);
/* IR and DR functions */
static int mcu_write_ir(struct jtag_tap *tap, uint8_t *ir_in, uint8_t *ir_out, int ir_len, int rti);
static int mcu_write_dr(struct jtag_tap *tap, uint8_t *dr_in, uint8_t *dr_out, int dr_len, int rti);
static int mcu_write_ir_u8(struct jtag_tap *tap, uint8_t *ir_in, uint8_t ir_out, int ir_len, int rti);
static int mcu_write_dr_u32(struct jtag_tap *tap, uint32_t *ir_in, uint32_t ir_out, int dr_len, int rti);
struct target_type avr_target = {
.name = "avr",
.poll = avr_poll,
.arch_state = avr_arch_state,
.halt = avr_halt,
.resume = avr_resume,
.step = avr_step,
.assert_reset = avr_assert_reset,
.deassert_reset = avr_deassert_reset,
/*
.get_gdb_reg_list = avr_get_gdb_reg_list,
.read_memory = avr_read_memory,
.write_memory = avr_write_memory,
.bulk_write_memory = avr_bulk_write_memory,
.checksum_memory = avr_checksum_memory,
.blank_check_memory = avr_blank_check_memory,
.run_algorithm = avr_run_algorithm,
.add_breakpoint = avr_add_breakpoint,
.remove_breakpoint = avr_remove_breakpoint,
.add_watchpoint = avr_add_watchpoint,
.remove_watchpoint = avr_remove_watchpoint,
*/
.target_create = avr_target_create,
.init_target = avr_init_target,
};
static int avr_target_create(struct target *target, Jim_Interp *interp)
{
struct avr_common *avr = calloc(1, sizeof(struct avr_common));
avr->jtag_info.tap = target->tap;
target->arch_info = avr;
return ERROR_OK;
}
static int avr_init_target(struct command_context *cmd_ctx, struct target *target)
{
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_arch_state(struct target *target)
{
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_poll(struct target *target)
{
if ((target->state == TARGET_RUNNING) || (target->state == TARGET_DEBUG_RUNNING))
target->state = TARGET_HALTED;
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_halt(struct target *target)
{
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_resume(struct target *target, int current, target_addr_t address,
int handle_breakpoints, int debug_execution)
{
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_step(struct target *target, int current, target_addr_t address, int handle_breakpoints)
{
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_assert_reset(struct target *target)
{
target->state = TARGET_RESET;
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
static int avr_deassert_reset(struct target *target)
{
target->state = TARGET_RUNNING;
LOG_DEBUG("%s", __func__);
return ERROR_OK;
}
int avr_jtag_senddat(struct jtag_tap *tap, uint32_t *dr_in, uint32_t dr_out,
int len)
{
return mcu_write_dr_u32(tap, dr_in, dr_out, len, 1);
}
int avr_jtag_sendinstr(struct jtag_tap *tap, uint8_t *ir_in, uint8_t ir_out)
{
return mcu_write_ir_u8(tap, ir_in, ir_out, AVR_JTAG_INS_LEN, 1);
}
/* IR and DR functions */
static int mcu_write_ir(struct jtag_tap *tap, uint8_t *ir_in, uint8_t *ir_out,
int ir_len, int rti)
{
if (NULL == tap) {
LOG_ERROR("invalid tap");
return ERROR_FAIL;
}
if (ir_len != tap->ir_length) {
LOG_ERROR("invalid ir_len");
return ERROR_FAIL;
}
{
jtag_add_plain_ir_scan(tap->ir_length, ir_out, ir_in, TAP_IDLE);
}
return ERROR_OK;
}
static int mcu_write_dr(struct jtag_tap *tap, uint8_t *dr_in, uint8_t *dr_out,
int dr_len, int rti)
{
if (NULL == tap) {
LOG_ERROR("invalid tap");
return ERROR_FAIL;
}
{
jtag_add_plain_dr_scan(dr_len, dr_out, dr_in, TAP_IDLE);
}
return ERROR_OK;
}
static int mcu_write_ir_u8(struct jtag_tap *tap, uint8_t *ir_in,
uint8_t ir_out, int ir_len, int rti)
{
if (ir_len > 8) {
LOG_ERROR("ir_len overflow, maximum is 8");
return ERROR_FAIL;
}
mcu_write_ir(tap, ir_in, &ir_out, ir_len, rti);
return ERROR_OK;
}
static int mcu_write_dr_u32(struct jtag_tap *tap, uint32_t *dr_in,
uint32_t dr_out, int dr_len, int rti)
{
if (dr_len > 32) {
LOG_ERROR("dr_len overflow, maximum is 32");
return ERROR_FAIL;
}
mcu_write_dr(tap, (uint8_t *)dr_in, (uint8_t *)&dr_out, dr_len, rti);
return ERROR_OK;
}
int mcu_execute_queue(void)
{
return jtag_execute_queue();
}
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