2 * This file is part of the coreboot project.
4 * Copyright (C) 2008-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; version 2 of
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
23 #include <arch/romcc_io.h>
24 #include <console/console.h>
25 #include <cpu/x86/smm.h>
26 #include "southbridge/intel/i82801gx/nvs.h"
27 #include <ec/acpi/ec.h>
31 /* The southbridge SMI handler checks whether gnvs has a
32 * valid pointer before calling the trap handler
34 extern global_nvs_t *gnvs;
36 static void mainboard_smm_init(void)
38 printk(BIOS_DEBUG, "initializing SMI\n");
39 /* Enable 0x1600/0x1600 register pair */
40 ec_set_bit(0x00, 0x05);
41 ec_set_ports(0x1604, 0x1600);
44 int mainboard_io_trap_handler(int smif)
46 static int smm_initialized;
48 if (!smm_initialized) {
54 case SMI_DOCK_CONNECT:
56 if (!dock_connect()) {
57 /* set dock LED to indicate status */
60 /* blink dock LED to indicate failure */
65 case SMI_DOCK_DISCONNECT:
74 /* On success, the IO Trap Handler returns 1
75 * On failure, the IO Trap Handler returns a value != 1 */