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ectool: Add an option to get and use EC ports from /proc/ioports

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There are boards that don't use ports 0x62 and 0x66 for EC, e.g. Dell
Latitude E6230 uses 0x930 and 0x934.

Change-Id: Ie3005f5cd6e37206ef187267b0542efdeb26b3af
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/23430
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Iru Cai
2018-01-25 21:44:09 +08:00
committed by Patrick Georgi
parent 51895d1838
commit 2e8f4ccfe6
4 changed files with 54 additions and 14 deletions
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49
util/ectool/ec.c
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@@ -16,12 +16,16 @@
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if !(defined __NetBSD__ || defined __OpenBSD__)
#include <sys/io.h>
#endif
#include "ec.h"
static int ec_data = 0x62;
static int ec_sc = 0x66;
#if defined __NetBSD__ || defined __OpenBSD__
#include <machine/sysarch.h>
static uint8_t inb(unsigned port)
@@ -45,7 +49,7 @@ int send_ec_command(uint8_t command)
int timeout;
timeout = 0x7ff;
while ((inb(EC_SC) & EC_IBF) && --timeout) {
while ((inb(ec_sc) & EC_IBF) && --timeout) {
usleep(10);
if ((timeout & 0xff) == 0)
debug(".");
@@ -56,7 +60,7 @@ int send_ec_command(uint8_t command)
// return -1;
}
outb(command, EC_SC);
outb(command, ec_sc);
return 0;
}
@@ -65,7 +69,7 @@ int send_ec_data(uint8_t data)
int timeout;
timeout = 0x7ff;
while ((inb(EC_SC) & EC_IBF) && --timeout) { // wait for IBF = 0
while ((inb(ec_sc) & EC_IBF) && --timeout) { // wait for IBF = 0
usleep(10);
if ((timeout & 0xff) == 0)
debug(".");
@@ -75,14 +79,14 @@ int send_ec_data(uint8_t data)
// return -1;
}
outb(data, EC_DATA);
outb(data, ec_data);
return 0;
}
int send_ec_data_nowait(uint8_t data)
{
outb(data, EC_DATA);
outb(data, ec_data);
return 0;
}
@@ -94,9 +98,9 @@ uint8_t recv_ec_data(void)
timeout = 0x7fff;
while (--timeout) { // Wait for OBF = 1
if (inb(EC_SC) & EC_OBF) {
if (inb(ec_sc) & EC_OBF)
break;
}
usleep(10);
if ((timeout & 0xff) == 0)
debug(".");
@@ -106,7 +110,7 @@ uint8_t recv_ec_data(void)
// return -1;
}
data = inb(EC_DATA);
data = inb(ec_data);
debug("recv_ec_data: 0x%02x\n", data);
return data;
@@ -165,3 +169,32 @@ uint8_t ec_query(void)
send_ec_command(QR_EC);
return recv_ec_data();
}
int get_ec_ports(void)
{
FILE *fp = fopen("/proc/ioports", "r");
int data = 0, cmd = 0;
char line[100];
if (fp == NULL)
return -1;
while (!feof(fp) && (data == 0 || cmd == 0)) {
fgets(line, sizeof(line), fp);
if (strstr(line, "EC data") != NULL)
data = strtol(line, NULL, 16);
if (strstr(line, "EC cmd") != NULL)
cmd = strtol(line, NULL, 16);
}
fclose(fp);
if (data != 0 && cmd != 0) {
debug("EC data = 0x%x, EC cmd = 0x%x\n", data, cmd);
ec_data = data;
ec_sc = cmd;
} else {
return -1;
}
return 0;
}