[coreboot] [v2] r4163 - in trunk/util: . ectool
svn at coreboot.org
svn at coreboot.org
Wed Apr 22 09:23:01 CEST 2009
Author: stepan
Date: 2009-04-22 09:23:00 +0200 (Wed, 22 Apr 2009)
New Revision: 4163
Added:
trunk/util/ectool/
trunk/util/ectool/Makefile
trunk/util/ectool/ec.c
trunk/util/ectool/ec.h
trunk/util/ectool/ectool.c
Log:
A small utility to dump the RAM of a laptop's Embedded/Environmental
Controller. Nothing fancy, does not know any laptops, EC types, or what
the values mean. It just dumps them. For the dump method, have a look at
the ACPI 3.0b spec.
Signed-off-by: Stefan Reinauer <stepan at coresystems.de>
Acked-by: Uwe Hermann <uwe at hermann-uwe.de>
Added: trunk/util/ectool/Makefile
===================================================================
--- trunk/util/ectool/Makefile (rev 0)
+++ trunk/util/ectool/Makefile 2009-04-22 07:23:00 UTC (rev 4163)
@@ -0,0 +1,34 @@
+#
+# Makefile for ectool
+#
+# Copyright (C) 2009 by coresystems GmbH
+# written by Stefan Reinauer <stepan at coresystems.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+CC=gcc
+CFLAGS=-O2 -Wall -W
+
+all: ectool
+
+ectool: ec.o ectool.o
+ $(CC) $(CFLAGS) -o $@ $^
+
+clean:
+ rm *.o ectool
+
+%.o: %.c
+ $(CC) $(CFLAGS) -c $^ -I. -o $@
Added: trunk/util/ectool/ec.c
===================================================================
--- trunk/util/ectool/ec.c (rev 0)
+++ trunk/util/ectool/ec.c 2009-04-22 07:23:00 UTC (rev 4163)
@@ -0,0 +1,119 @@
+/*
+ * This file is part of the ectool project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/io.h>
+#include "ec.h"
+
+extern int verbose;
+
+#define debug(x...) if (verbose) printf(x)
+
+int send_ec_command(uint8_t command)
+{
+ int timeout;
+
+ timeout = 0x7ff;
+ while ((inb(EC_SC) & EC_IBF) && --timeout) {
+ usleep(10);
+ if ((timeout & 0xff) == 0)
+ debug(".");
+ }
+ if (!timeout) {
+ printf("Timeout while sending command 0x%02x to EC!\n",
+ command);
+ // return -1;
+ }
+
+ outb(command, EC_SC);
+ return 0;
+}
+
+int send_ec_data(uint8_t data)
+{
+ int timeout;
+
+ timeout = 0x7ff;
+ while ((inb(EC_SC) & EC_IBF) && --timeout) { // wait for IBF = 0
+ usleep(10);
+ if ((timeout & 0xff) == 0)
+ debug(".");
+ }
+ if (!timeout) {
+ printf("Timeout while sending data 0x%02x to EC!\n",
+ data);
+ // return -1;
+ }
+
+ outb(data, EC_DATA);
+
+ return 0;
+}
+
+int send_ec_data_nowait(uint8_t data)
+{
+ outb(data, EC_DATA);
+
+ return 0;
+}
+
+uint8_t recv_ec_data(void)
+{
+ int timeout;
+ uint8_t data;
+
+ timeout = 0x7fff;
+ while (--timeout) { // Wait for OBF = 1
+ if (inb(EC_SC) & EC_OBF) {
+ break;
+ }
+ usleep(10);
+ if ((timeout & 0xff) == 0)
+ debug(".");
+ }
+ if (!timeout) {
+ printf("\nTimeout while receiving data from EC!\n");
+ // return -1;
+ }
+
+ data = inb(EC_DATA);
+ debug("recv_ec_data: 0x%02x\n", data);
+
+ return data;
+}
+
+uint8_t ec_read(uint8_t addr)
+{
+ send_ec_command(0x80);
+ send_ec_data(addr);
+
+ return recv_ec_data();
+}
+
+int ec_write(uint8_t addr, uint8_t data)
+{
+ send_ec_command(0x81);
+ send_ec_data(addr);
+ return send_ec_data(data);
+}
+
Added: trunk/util/ectool/ec.h
===================================================================
--- trunk/util/ectool/ec.h (rev 0)
+++ trunk/util/ectool/ec.h 2009-04-22 07:23:00 UTC (rev 4163)
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the ectool project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef _EC_H
+#define _EC_H
+#include <stdint.h>
+#define EC_DATA 0x62
+#define EC_SC 0x66
+
+/* EC_SC input */
+#define EC_SMI_EVT (1 << 6) // 1: SMI event pending
+#define EC_SCI_EVT (1 << 5) // 1: SCI event pending
+#define EC_BURST (1 << 4) // controller is in burst mode
+#define EC_CMD (1 << 3) // 1: byte in data register is command
+ // 0: byte in data register is data
+#define EC_IBF (1 << 1) // 1: input buffer full (data ready for ec)
+#define EC_OBF (1 << 0) // 1: output buffer full (data ready for host)
+/* EC_SC output */
+#define RD_EC 0x80 // Read Embedded Controller
+#define WR_EC 0x81 // Write Embedded Controller
+#define BE_EC 0x82 // Burst Enable Embedded Controller
+#define BD_EC 0x83 // Burst Disable Embedded Controller
+#define QR_EC 0x84 // Query Embedded Controller
+
+int send_ec_command(uint8_t command);
+int send_ec_data(uint8_t data);
+int send_ec_data_nowait(uint8_t data);
+uint8_t recv_ec_data(void);
+uint8_t ec_read(uint8_t addr);
+#endif
+
Added: trunk/util/ectool/ectool.c
===================================================================
--- trunk/util/ectool/ectool.c (rev 0)
+++ trunk/util/ectool/ectool.c 2009-04-22 07:23:00 UTC (rev 4163)
@@ -0,0 +1,104 @@
+/*
+ * This file is part of the ectool project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/io.h>
+#include <ec.h>
+
+#define ECTOOL_VERSION "0.1"
+
+void print_version(void)
+{
+ printf("ectool v%s -- ", ECTOOL_VERSION);
+ printf("Copyright (C) 2008-2009 coresystems GmbH\n\n");
+ printf(
+ "This program is free software: you can redistribute it and/or modify\n"
+ "it under the terms of the GNU General Public License as published by\n"
+ "the Free Software Foundation, version 2 of the License.\n\n"
+ "This program is distributed in the hope that it will be useful,\n"
+ "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+ "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
+ "GNU General Public License for more details.\n\n"
+ "You should have received a copy of the GNU General Public License\n"
+ "along with this program. If not, see <http://www.gnu.org/licenses/>.\n\n");
+}
+
+void print_usage(const char *name)
+{
+ printf("usage: %s [-vh?V]\n", name);
+ printf("\n"
+ " -v | --version: print the version\n"
+ " -h | --help: print this help\n\n"
+ " -V | --verbose: print debug information\n"
+ "\n");
+ exit(1);
+}
+
+int verbose = 0;
+
+int main(int argc, char *argv[])
+{
+ int i, opt, option_index = 0;
+
+ static struct option long_options[] = {
+ {"version", 0, 0, 'v'},
+ {"help", 0, 0, 'h'},
+ {"verbose", 0, 0, 'V'},
+ {0, 0, 0, 0}
+ };
+
+ while ((opt = getopt_long(argc, argv, "vh?V",
+ long_options, &option_index)) != EOF) {
+ switch (opt) {
+ case 'v':
+ print_version();
+ exit(0);
+ break;
+ case 'V':
+ verbose = 1;
+ break;
+ case 'h':
+ case '?':
+ default:
+ print_usage(argv[0]);
+ exit(0);
+ break;
+ }
+ }
+
+ if (iopl(3)) {
+ printf("You need to be root.\n");
+ exit(1);
+ }
+
+ printf("EC RAM:\n");
+ for (i=0; i < 0x100; i++) {
+ if ((i % 0x10) == 0)
+ printf ("\n%02x: ", i);
+ printf("%02x ", ec_read(i));
+ }
+ printf("\n\n");
+ return 0;
+}
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