a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
151 lines
2.7 KiB
C
151 lines
2.7 KiB
C
/*
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* This file is part of the ectool project.
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*
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* Copyright (C) 2008-2009 coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/io.h>
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#include "ec.h"
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extern int verbose;
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#define debug(x...) if (verbose) printf(x)
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int send_ec_command(uint8_t command)
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{
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int timeout;
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timeout = 0x7ff;
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while ((inb(EC_SC) & EC_IBF) && --timeout) {
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usleep(10);
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if ((timeout & 0xff) == 0)
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debug(".");
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}
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if (!timeout) {
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debug("Timeout while sending command 0x%02x to EC!\n",
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command);
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// return -1;
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}
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outb(command, EC_SC);
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return 0;
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}
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int send_ec_data(uint8_t data)
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{
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int timeout;
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timeout = 0x7ff;
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while ((inb(EC_SC) & EC_IBF) && --timeout) { // wait for IBF = 0
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usleep(10);
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if ((timeout & 0xff) == 0)
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debug(".");
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}
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if (timeout) {
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debug("Timeout while sending data 0x%02x to EC!\n", data);
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// return -1;
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}
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outb(data, EC_DATA);
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return 0;
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}
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int send_ec_data_nowait(uint8_t data)
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{
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outb(data, EC_DATA);
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return 0;
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}
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uint8_t recv_ec_data(void)
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{
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int timeout;
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uint8_t data;
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timeout = 0x7fff;
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while (--timeout) { // Wait for OBF = 1
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if (inb(EC_SC) & EC_OBF) {
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break;
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}
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usleep(10);
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if ((timeout & 0xff) == 0)
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debug(".");
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}
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if (!timeout) {
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debug("\nTimeout while receiving data from EC!\n");
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// return -1;
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}
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data = inb(EC_DATA);
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debug("recv_ec_data: 0x%02x\n", data);
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return data;
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}
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uint8_t ec_read(uint8_t addr)
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{
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send_ec_command(RD_EC);
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send_ec_data(addr);
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return recv_ec_data();
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}
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uint8_t ec_ext_read(uint16_t addr)
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{
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send_ec_command(WR_EC);
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send_ec_data(0x02);
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send_ec_data(addr & 0xff);
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send_ec_command(RX_EC);
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send_ec_data(addr >> 8);
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return recv_ec_data();
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}
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int ec_ext_write(uint16_t addr, uint8_t data)
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{
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send_ec_command(WR_EC);
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send_ec_data(0x02);
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send_ec_data(addr & 0xff);
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send_ec_command(WX_EC);
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send_ec_data(addr >> 8);
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return send_ec_data(data);
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}
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int ec_write(uint8_t addr, uint8_t data)
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{
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send_ec_command(WR_EC);
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send_ec_data(addr);
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return send_ec_data(data);
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}
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uint8_t ec_idx_read(uint16_t addr)
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{
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uint16_t lpc_idx = 0x380;
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outb(addr & 0xff, lpc_idx + 2);
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outb(addr >> 8, lpc_idx + 1);
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return inb(lpc_idx + 3);
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}
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uint8_t ec_query(void)
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{
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send_ec_command(QR_EC);
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return recv_ec_data();
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}
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