/*
 * $Id: register.c,v 1.2 2003/08/19 08:42:20 telka Exp $
 *
 * Copyright (C) 2003 ETC s.r.o.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * Written by Marcel Telka <marcel@telka.sk>, 2003.
 *
 */

#include "sysdep.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "jtag.h"

#include "cmd.h"

static int
cmd_register_run( char *params[] )
{
	part_t *part;
	unsigned int len;
	data_register *dr;

	if (cmd_params( params ) != 3)
		return -1;


	if (!cmd_test_cable())
		return 1;

	if (!chain->parts) {
		printf( _("Run \"detect\" first.\n") );
		return 1;
	}

	if (chain->active_part >= chain->parts->len) {
		printf( _("%s: no active part\n"), "register" );
		return 1;
	}

	if (cmd_get_number( params[2], &len ))
		return -1;

	part = chain->parts->parts[chain->active_part];

	if (part_find_data_register( part, params[1] ) != NULL) {
		printf( _("Data register '%s' already defined\n"), params[1] );
		return 1;
	}

	dr = data_register_alloc( params[1], len );
	if (!dr) {
		printf( _("out of memory\n") );
		return 1;
	}

	dr->next = part->data_registers;
	part->data_registers = dr;

	/* Boundary Scan Register */
	if (strcmp( dr->name, "BSR" ) == 0) {
		int i;

		part->boundary_length = len;
		part->bsbits = malloc( part->boundary_length * sizeof *part->bsbits );
		if (!part->bsbits) {
			printf( _("out of memory\n") );
			return 1;
		}
		for (i = 0; i < part->boundary_length; i++)
			part->bsbits[i] = NULL;
	}

	/* Device Identification Register */
	if (strcmp( dr->name, "DIR" ) == 0)
		register_init( dr->out, register_get_string( part->id ) );

	return 1;
}

static void
cmd_register_help( void )
{
	printf( _(
		"Usage: %s NAME LENGTH\n"
		"Define new data register with specified NAME and LENGTH.\n"
		"\n"
		"NAME          Data register name\n"
		"LENGTH        Data register length\n"
	), "register" );
}

cmd_t cmd_register = {
	"register",
	N_("define new data register for a part"),
	cmd_register_help,
	cmd_register_run
};
