64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/***************************************************************************
|
|
* Copyright (C) 2013 by Franck Jullien *
|
|
* elec4fun@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 *
|
|
* (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 "or1k_tap.h"
|
|
#include "or1k.h"
|
|
|
|
#include <jtag/jtag.h>
|
|
|
|
#define OR1K_TAP_INST_DEBUG 0x8
|
|
|
|
static int or1k_tap_mohor_init(struct or1k_jtag *jtag_info)
|
|
{
|
|
LOG_DEBUG("Initialising OpenCores JTAG TAP");
|
|
|
|
/* Put TAP into state where it can talk to the debug interface
|
|
* by shifting in correct value to IR.
|
|
*/
|
|
|
|
/* Ensure TAP is reset - maybe not necessary*/
|
|
jtag_add_tlr();
|
|
|
|
struct jtag_tap *tap = jtag_info->tap;
|
|
struct scan_field field;
|
|
uint8_t ir_value = OR1K_TAP_INST_DEBUG;
|
|
|
|
field.num_bits = tap->ir_length;
|
|
field.out_value = &ir_value;
|
|
field.in_value = NULL;
|
|
|
|
jtag_add_ir_scan(tap, &field, TAP_IDLE);
|
|
|
|
return jtag_execute_queue();
|
|
}
|
|
|
|
static struct or1k_tap_ip mohor_tap = {
|
|
.name = "mohor",
|
|
.init = or1k_tap_mohor_init,
|
|
};
|
|
|
|
int or1k_tap_mohor_register(void)
|
|
{
|
|
list_add_tail(&mohor_tap.list, &tap_list);
|
|
return 0;
|
|
}
|