summaryrefslogtreecommitdiff
path: root/src/mainboard/intel/d945gclf/smihandler.c
blob: dbd1a81a647f908f6d5dfa80ac237751104559b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2008-2009 coresystems GmbH
 *
 * 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; version 2 of the License.
 *
 * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <arch/io.h>
#include <arch/romcc_io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include "southbridge/intel/i82801gx/nvs.h"

/* The southbridge SMI handler checks whether gnvs has a
 * valid pointer before calling the trap handler
 */
extern global_nvs_t *gnvs;

int mainboard_io_trap_handler(int smif)
{
	switch (smif) {
	case 0x99:
		printk(BIOS_DEBUG, "Sample\n");
		gnvs->smif = 0;
		break;
	default:
		return 0;
	}

	/* On success, the IO Trap Handler returns 0
	 * On failure, the IO Trap Handler returns a value != 0
	 *
	 * For now, we force the return value to 0 and log all traps to
	 * see what's going on.
	 */
	//gnvs->smif = 0;
	return 1;
}