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@coresystems.de Acked-by: Uwe Hermann uwe@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@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; +}