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 modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #ifndef _MAINBOARD_EC_H
21 #define _MAINBOARD_EC_H
27 #define EC_SMI_EVT (1 << 6) // 1: SMI event pending
28 #define EC_SCI_EVT (1 << 5) // 1: SCI event pending
29 #define EC_BURST (1 << 4) // controller is in burst mode
30 #define EC_CMD (1 << 3) // 1: byte in data register is command
31 // 0: byte in data register is data
32 #define EC_IBF (1 << 1) // 1: input buffer full (data ready for ec)
33 #define EC_OBF (1 << 0) // 1: output buffer full (data ready for host)
35 #define RD_EC 0x80 // Read Embedded Controller
36 #define WR_EC 0x81 // Write Embedded Controller
37 #define BE_EC 0x82 // Burst Enable Embedded Controller
38 #define BD_EC 0x83 // Burst Disable Embedded Controller
39 #define QR_EC 0x84 // Query Embedded Controller
41 int send_ec_command(u8 command);
42 int send_ec_data(u8 data);
43 int send_ec_data_nowait(u8 data);
44 u8 recv_ec_data(void);
46 int ec_write(u8 addr, u8 data);