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/***************************************************************************
* Copyright (C) 2010 by Oleksandr Tymoshenko <gonzo@bluezbox.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 "target.h"
#include "jtag/jtag.h"
#include "avr32_jtag.h"
#include "avr32_regs.h"
static int avr32_jtag_read_reg(struct avr32_jtag *jtag_info, int reg,
uint32_t *val)
{
int retval;
uint32_t dcsr;
retval = avr32_jtag_exec(jtag_info, MTDR(AVR32_OCDREG_DCCPU, reg));
if (retval != ERROR_OK)
return retval;
do {
retval = avr32_jtag_nexus_read(jtag_info,
AVR32_OCDREG_DCSR, &dcsr);
if (retval != ERROR_OK)
return retval;
} while (!(dcsr & OCDREG_DCSR_CPUD));
retval = avr32_jtag_nexus_read(jtag_info,
AVR32_OCDREG_DCCPU, val);
return retval;
}
static int avr32_jtag_write_reg(struct avr32_jtag *jtag_info, int reg,
uint32_t val)
{
int retval;
uint32_t dcsr;
/* Restore Status reg */
retval = avr32_jtag_nexus_write(jtag_info,
AVR32_OCDREG_DCEMU, val);
if (retval != ERROR_OK)
return retval;
retval = avr32_jtag_exec(jtag_info, MFDR(reg, AVR32_OCDREG_DCEMU));
if (retval != ERROR_OK)
return retval;
do {
retval = avr32_jtag_nexus_read(jtag_info,
AVR32_OCDREG_DCSR, &dcsr);
} while (!(dcsr & OCDREG_DCSR_EMUD) && (retval == ERROR_OK));
return retval;
}
int avr32_jtag_read_regs(struct avr32_jtag *jtag_info, uint32_t *regs)
{
int i, retval;
/* read core registers */
for (i = 0; i < AVR32NUMCOREREGS - 1; i++)
avr32_jtag_read_reg(jtag_info, i, regs + i);
/* read status register */
retval = avr32_jtag_exec(jtag_info, MFSR(0, 0));
if (retval != ERROR_OK)
return retval;
retval = avr32_jtag_read_reg(jtag_info, 0, regs + AVR32_REG_SR);
return retval;
}
int avr32_jtag_write_regs(struct avr32_jtag *jtag_info, uint32_t *regs)
{
int i, retval;
retval = avr32_jtag_write_reg(jtag_info, 0, regs[AVR32_REG_SR]);
if (retval != ERROR_OK)
return retval;
/* Restore Status reg */
retval = avr32_jtag_exec(jtag_info, MTSR(0, 0));
if (retval != ERROR_OK)
return retval;
/*
* And now the rest of registers
*/
for (i = 0; i < AVR32NUMCOREREGS - 1; i++)
avr32_jtag_write_reg(jtag_info, i, regs[i]);
return ERROR_OK;
}
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