LXR coreboot/util/ectool/ec.h

   1/*
   2 * This file is part of the ectool project.
   3 *
   4 * Copyright (C) 2008-2009 coresystems GmbH
   5 *
   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 the License.
   9 *
  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.
  14 *
  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
  18 */
  19
  20#ifndef _EC_H
  21#define _EC_H
  22
  23#define EC_DATA         0x62
  24#define EC_SC           0x66
  25
  26/* EC_SC input */
  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)
  34
  35/* EC_SC output */
  36#define   RD_EC         0x80    // Read Embedded Controller
  37#define   WR_EC         0x81    // Write Embedded Controller
  38#define   BE_EC         0x82    // Burst Enable Embedded Controller
  39#define   BD_EC         0x83    // Burst Disable Embedded Controller
  40#define   QR_EC         0x84    // Query Embedded Controller
  41#define   RX_EC         0xf0    // Read Extended operation
  42#define   WX_EC         0xf1    // Write Extended operation
  43
  44int send_ec_command(uint8_t command);
  45int send_ec_data(uint8_t data);
  46int send_ec_data_nowait(uint8_t data);
  47uint8_t recv_ec_data(void);
  48uint8_t ec_read(uint8_t addr);
  49int ec_write(uint8_t addr, uint8_t data);
  50uint8_t ec_ext_read(uint16_t addr);
  51int ec_ext_write(uint16_t addr, uint8_t data);
  52uint8_t ec_idx_read(uint16_t addr);
  53#endif
  54