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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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include <target/avrt.h>
/* AVR_JTAG_Instructions */
#define AVR_JTAG_INS_LEN 4
/* Public Instructions: */
#define AVR_JTAG_INS_EXTEST 0x00
#define AVR_JTAG_INS_IDCODE 0x01
#define AVR_JTAG_INS_SAMPLE_PRELOAD 0x02
#define AVR_JTAG_INS_BYPASS 0x0F
/* AVR Specified Public Instructions: */
#define AVR_JTAG_INS_AVR_RESET 0x0C
#define AVR_JTAG_INS_PROG_ENABLE 0x04
#define AVR_JTAG_INS_PROG_COMMANDS 0x05
#define AVR_JTAG_INS_PROG_PAGELOAD 0x06
#define AVR_JTAG_INS_PROG_PAGEREAD 0x07
/* Data Registers: */
#define AVR_JTAG_REG_Bypass_Len 1
#define AVR_JTAG_REG_DeviceID_Len 32
#define AVR_JTAG_REG_Reset_Len 1
#define AVR_JTAG_REG_JTAGID_Len 32
#define AVR_JTAG_REG_ProgrammingEnable_Len 16
#define AVR_JTAG_REG_ProgrammingCommand_Len 15
#define AVR_JTAG_REG_FlashDataByte_Len 16
struct avrf_type {
char name[15];
uint16_t chip_id;
int flash_page_size;
int flash_page_num;
int eeprom_page_size;
int eeprom_page_num;
};
struct avrf_flash_bank {
int ppage_size;
int probed;
};
static const struct avrf_type avft_chips_info[] = {
/* name, chip_id, flash_page_size, flash_page_num,
* eeprom_page_size, eeprom_page_num
*/
{"atmega128", 0x9702, 256, 512, 8, 512},
{"at90can128", 0x9781, 256, 512, 8, 512},
{"atmega164p", 0x940a, 128, 128, 4, 128},
{"atmega324p", 0x9508, 128, 256, 4, 256},
{"atmega324pa", 0x9511, 128, 256, 4, 256},
{"atmega644p", 0x960a, 256, 256, 8, 256},
{"atmega1284p", 0x9705, 256, 512, 8, 512},
};
/* avr program functions */
static int avr_jtag_reset(struct avr_common *avr, uint32_t reset)
{
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_AVR_RESET);
avr_jtag_senddat(avr->jtag_info.tap, NULL, reset, AVR_JTAG_REG_Reset_Len);
return ERROR_OK;
}
static int avr_jtag_read_jtagid(struct avr_common *avr, uint32_t *id)
{
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_IDCODE);
avr_jtag_senddat(avr->jtag_info.tap, id, 0, AVR_JTAG_REG_JTAGID_Len);
return ERROR_OK;
}
static int avr_jtagprg_enterprogmode(struct avr_common *avr)
{
avr_jtag_reset(avr, 1);
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xA370, AVR_JTAG_REG_ProgrammingEnable_Len);
return ERROR_OK;
}
static int avr_jtagprg_leaveprogmode(struct avr_common *avr)
{
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2300, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3300, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0, AVR_JTAG_REG_ProgrammingEnable_Len);
avr_jtag_reset(avr, 0);
return ERROR_OK;
}
static int avr_jtagprg_chiperase(struct avr_common *avr)
{
uint32_t poll_value;
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2380, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3180, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
do {
poll_value = 0;
avr_jtag_senddat(avr->jtag_info.tap,
&poll_value,
0x3380,
AVR_JTAG_REG_ProgrammingCommand_Len);
if (ERROR_OK != mcu_execute_queue())
return ERROR_FAIL;
LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
} while (!(poll_value & 0x0200));
return ERROR_OK;
}
static int avr_jtagprg_writeflashpage(struct avr_common *avr,
const uint8_t *page_buf,
uint32_t buf_size,
uint32_t addr,
uint32_t page_size)
{
uint32_t i, poll_value;
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2310, AVR_JTAG_REG_ProgrammingCommand_Len);
/* load addr high byte */
avr_jtag_senddat(avr->jtag_info.tap,
NULL,
0x0700 | ((addr >> 9) & 0xFF),
AVR_JTAG_REG_ProgrammingCommand_Len);
/* load addr low byte */
avr_jtag_senddat(avr->jtag_info.tap,
NULL,
0x0300 | ((addr >> 1) & 0xFF),
AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_PAGELOAD);
for (i = 0; i < page_size; i++) {
if (i < buf_size)
avr_jtag_senddat(avr->jtag_info.tap, NULL, page_buf[i], 8);
else
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xFF, 8);
}
avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3500, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
do {
poll_value = 0;
avr_jtag_senddat(avr->jtag_info.tap,
&poll_value,
0x3700,
AVR_JTAG_REG_ProgrammingCommand_Len);
if (ERROR_OK != mcu_execute_queue())
return ERROR_FAIL;
LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
} while (!(poll_value & 0x0200));
return ERROR_OK;
}
FLASH_BANK_COMMAND_HANDLER(avrf_flash_bank_command)
{
struct avrf_flash_bank *avrf_info;
if (CMD_ARGC < 6)
return ERROR_COMMAND_SYNTAX_ERROR;
avrf_info = malloc(sizeof(struct avrf_flash_bank));
bank->driver_priv = avrf_info;
avrf_info->probed = 0;
return ERROR_OK;
}
static int avrf_erase(struct flash_bank *bank, int first, int last)
{
struct target *target = bank->target;
struct avr_common *avr = target->arch_info;
int status;
LOG_DEBUG("%s", __func__);
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
status = avr_jtagprg_enterprogmode(avr);
if (status != ERROR_OK)
return status;
status = avr_jtagprg_chiperase(avr);
if (status != ERROR_OK)
return status;
return avr_jtagprg_leaveprogmode(avr);
}
static int avrf_protect(struct flash_bank *bank, int set, int first, int last)
{
LOG_INFO("%s", __func__);
return ERROR_OK;
}
static int avrf_write(struct flash_bank *bank, const uint8_t *buff
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