--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+
+ For example, if you distribute copies of such a program, whether
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+ We protect your rights with two steps: (1) copyright the software, and
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+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
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+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
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+
+ This program is free software; you can redistribute it and/or modify
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+ (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.
+
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+ with this program; if not, write to the Free Software Foundation, Inc.,
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+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
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+
+The hypothetical commands `show w' and `show c' should show the appropriate
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+
+You should also get your employer (if you work as a programmer) or your
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+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
--- /dev/null
+# Makefile for msrtool
+#
+# This file is part of msrtool.
+#
+# Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# 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
+#
+
+PROGRAM = msrtool
+
+CC = @CC@
+INSTALL = @INSTALL@
+PREFIX = @PREFIX@
+CFLAGS = @CFLAGS@
+LDFLAGS = @LDFLAGS@
+
+TARGETS = geodelx.o cs5536.o
+SYSTEMS = linux.o
+OBJS = $(PROGRAM).o msrutils.o sys.o $(SYSTEMS) $(TARGETS)
+
+all: $(PROGRAM)
+
+$(PROGRAM): $(OBJS) Makefile.deps
+ $(CC) -o $@ $(OBJS) $(LDFLAGS)
+
+$(PROGRAM).o: $(PROGRAM).c
+ $(CC) $(CFLAGS) -DVERSION='"@VERSION@"' -c $< -o $@
+
+install: $(PROGRAM)
+ $(INSTALL) $(PROGRAM) $(PREFIX)/sbin
+ mkdir -p $(PREFIX)/share/man/man8
+ $(INSTALL) $(PROGRAM).8 $(PREFIX)/share/man/man8
+
+distprep: distclean Makefile.deps
+
+clean:
+ rm -f $(PROGRAM) $(OBJS)
+
+distclean: clean
+ rm -f Makefile
+
+mrproper: distclean
+ rm -f Makefile.deps
+
+dep:
+ rm -f Makefile.deps
+ $(MAKE) Makefile.deps
+
+Makefile.deps: $(patsubst %.o,%.c,$(OBJS))
+ $(CC) -MM $^ > $@
+
+.PHONY: all distprep clean distclean mrproper dep
+
+-include Makefile.deps
--- /dev/null
+Systems
+-------
+FreeBSD #defines: see svn diff -r 3697:3698 util/
+
+Other ideas
+-----------
+Move MSR definitions and probe instructions into an external text file?
+Handle PCI registers as well?
--- /dev/null
+#!/bin/sh
+#
+# This file is part of msrtool.
+#
+# Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+# If this is left unset, try to set the version string from the highest
+# revision number of the checked out files later.
+VERSION=""
+
+REV="$(svnversion -c . 2>/dev/null)"; REV="${REV/*:}"
+VERSION="${VERSION:-$REV}"
+
+function findprog() {
+ local WHAT FROMENV FILE
+ WHAT="${1}"
+ shift
+ FROMENV="${1}"
+ shift
+ echo -n "searching for ${WHAT} (${*})..." 1>&2
+ test -n "${FROMENV}" && {
+ echo " using environment: ${FROMENV}" 1>&2
+ echo "${FROMENV}"
+ exit 0
+ }
+ for parm in $(seq 0 $#); do
+ test -z "${1}" && {
+ shift
+ continue
+ }
+ FILE="$(which "${1}" 2>/dev/null)"
+ test $? -eq 0 && {
+ echo "${1}"
+ break
+ }
+ shift
+ done
+ test -z "${1}" && {
+ echo " not found!" 1>&2
+ echo 1>&2
+ echo "This is a fatal error, configure is exiting!" 1>&2
+ exit 1
+ }
+ echo " using ${FILE} in PATH" 1>&2
+ exit 0
+}
+
+function trycompile() {
+ local WHAT OUT
+ WHAT="${1}"
+ shift
+ echo -n "finding CFLAGS for ${WHAT}... " 1>&2
+ OUT="${OUT}\n${CC} ${CFLAGS} -o .config.o -c .config.c"
+ OUT="${OUT}\n$(${CC} ${CFLAGS} -o .config.o -c .config.c 2>&1)"
+ test $? -eq 0 && {
+ echo " using: ${CFLAGS}" 1>&2
+ echo "${CFLAGS}"
+ exit 0
+ }
+ for parm in $(seq 1 $#); do
+ OUT="${OUT}\n${CC} ${CFLAGS} ${1} -o .config.o -c .config.c 2>&1"
+ OUT="${OUT}\n$(${CC} ${CFLAGS} ${1} -o .config.o -c .config.c 2>&1)"
+ test $? -eq 0 && {
+ echo " using: ${CFLAGS} ${1}" 1>&2
+ echo "${CFLAGS} ${1}"
+ exit 0
+ }
+ shift
+ done
+ echo "failed!" 1>&2
+ echo 1>&2
+ echo -n "The following compiler commands were executed:" 1>&2
+ echo -e "${OUT}\n" 1>&2
+ echo "This is a fatal error, configure is exiting!" 1>&2
+ echo 1>&2
+ echo "You can try to fix this by manually setting CFLAGS in the environment before" 1>&2
+ echo "running configure. E.g.:" 1>&2
+ echo "CFLAGS=-I/opt/somedir/include ${0}" 1>&2
+ echo 1>&2
+ exit 1
+}
+
+function trylink() {
+ local WHAT OUT
+ WHAT="${1}"
+ shift
+ echo -n "finding LDFLAGS for ${WHAT}... " 1>&2
+ OUT="${OUT}\n${CC} -o .config .config.o ${LDFLAGS} 2>&1"
+ OUT="${OUT}\n$(${CC} -o .config .config.o ${LDFLAGS} 2>&1)"
+ test $? -eq 0 && {
+ echo " using: ${LDFLAGS}" 1>&2
+ echo "${LDFLAGS}"
+ exit 0
+ }
+ for parm in $(seq 1 $#); do
+ OUT="${OUT}\n${CC} -o .config .config.o ${LDFLAGS} ${1} 2>&1"
+ OUT="${OUT}\n$(${CC} -o .config .config.o ${LDFLAGS} ${1} 2>&1)"
+ test $? -eq 0 && {
+ echo " using: ${LDFLAGS} ${1}" 1>&2
+ echo "${LDFLAGS} ${1}"
+ exit 0
+ }
+ shift
+ done
+ echo "failed!" 1>&2
+ echo 1>&2
+ echo -n "The following linker commands were executed:" 1>&2
+ echo -e "${OUT}\n" 1>&2
+ echo "This is a fatal error, configure is exiting!" 1>&2
+ echo 1>&2
+ echo "You can try to fix this by manually setting LDFLAGS in the environment before" 1>&2
+ echo "running configure. E.g.:" 1>&2
+ echo "LDFLAGS=-L/opt/somedir/lib ${0}" 1>&2
+ echo 1>&2
+ exit 1
+}
+
+CC=$(findprog "compiler" "${CC}" gcc cc icc) || exit
+INSTALL=$(findprog "install" "${INSTALL}" install ginstall) || exit
+
+test -n "$DEBUG" && myCFLAGS="-O2 -g" || myCFLAGS="-Os"
+CFLAGS="${CFLAGS} ${myCFLAGS} -Wall -Werror"
+
+PREFIX="${PREFIX:-/usr/local}"
+
+OS_ARCH=$(uname)
+
+echo
+echo "configured using the following settings:"
+echo
+echo "VERSION=${VERSION}"
+echo "CC=${CC}"
+echo "CFLAGS=${CFLAGS}"
+echo "LDFLAGS=${LDFLAGS}"
+echo "INSTALL=${INSTALL}"
+echo "PREFIX=${PREFIX}"
+echo
+echo -n "creating Makefile..."
+echo "# This file was automatically generated by configure" > Makefile
+sed -e "s#@VERSION@#${VERSION}#g" \
+ -e "s#@CC@#${CC}#g" \
+ -e "s#@CFLAGS@#${CFLAGS}#g" \
+ -e "s#@LDFLAGS@#${LDFLAGS}#g" \
+ -e "s#@INSTALL@#${INSTALL}#g" \
+ -e "s#@PREFIX@#/usr/local#g" \
+ Makefile.in >> Makefile
+echo " done"
+echo
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 "msrtool.h"
+
+int cs5536_probe(const struct targetdef *target) {
+ /* TODO: PCI 1022:2090 */
+ return 0;
+}
+
+const struct msrdef cs5536_msrs[] = {
+ { MSR_EOT }
+};
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 "msrtool.h"
+
+int geodelx_probe(const struct targetdef *target) {
+ struct cpuid_t *id = cpuid();
+ return 10 == id->family && 5 == id->model;
+}
+
+const struct msrdef geodelx_msrs[] = {
+ { 0x4c00000f, MSRTYPE_RDWR, MSR2(0, 0), "GLCP_DELAY_CONTROLS", "GLCP I/O Delay Controls", {
+ { 63, 1, "EN", "Enable", PRESENT_DEC, {
+ { MSR1(0), "Use default values" },
+ { MSR1(1), "Use value in bits [62:0]" },
+ { BITVAL_EOT }
+ }},
+ { 62, 1, "B_DQ", "Buffer Control for DQ DQS DQM TLA drive", PRESENT_DEC, {
+ { MSR1(1), "Half power" },
+ { MSR1(0), "Quarter power" },
+ { BITVAL_EOT }
+ }},
+ { 61, 1, "B_CMD", "Buffer Control for RAS CAS CKE CS WE drive", PRESENT_DEC, {
+ { MSR1(1), "Half power" },
+ { MSR1(0), "Quarter power" },
+ { BITVAL_EOT }
+ }},
+ { 60, 1, "B_MA", "Buffer Control for MA BA drive", PRESENT_DEC, {
+ { MSR1(0), "Half power" },
+ { MSR1(1), "Full power" },
+ { BITVAL_EOT }
+ }},
+ { 59, 1, "SDCLK_SET", "SDCLK Setup", PRESENT_DEC, {
+ { MSR1(0), "Full SDCLK setup" },
+ { MSR1(1), "Half SDCLK setup for control signals" },
+ { BITVAL_EOT }
+ }},
+ { 58, 3, "DDR_RLE", "DDR read latch enable position", PRESENT_DEC, NOBITS },
+ { 55, 1, "SDCLK_DIS", "SDCLK disable [1,3,5]", PRESENT_DEC, {
+ { MSR1(0), "All SDCLK output" },
+ { MSR1(1), "SDCLK[0,2,4] output only" },
+ { BITVAL_EOT }
+ }},
+ { 54, 3, "TLA1_OA", "TLA hint pin output adjust", PRESENT_DEC, NOBITS },
+ { 51, 2, "D_TLA1", "Output delay for TLA1", PRESENT_DEC, NOBITS },
+ { 49, 2, "D_TLA0", "Output delay for TLA0", PRESENT_DEC, NOBITS },
+ { 47, 2, "D_DQ_E", "Output delay for DQ DQM - even byte lanes", PRESENT_DEC, NOBITS },
+ { 45, 2, "D_DQ_O", "Output delay for DQ DQM - odd byte lanes", PRESENT_DEC, NOBITS },
+ { 43, 2, RESERVED},
+ { 41, 2, "D_SDCLK", "Output delay for SDCLK", PRESENT_DEC, NOBITS },
+ { 39, 2, "D_CMD_O", "Output delay for CKE CS RAS CAS WE - odd bits", PRESENT_DEC, NOBITS },
+ { 37, 2, "D_CMD_E", "Output delay for CKE CS RAS CAS WE - even bits", PRESENT_DEC, NOBITS },
+ { 35, 2, "D_MA_O", "Output delay for BA MA - odd bits", PRESENT_DEC, NOBITS },
+ { 33, 2, "D_MA_E", "Output delay for BA MA - even bits", PRESENT_DEC, NOBITS },
+ { 31, 2, "D_PCI_O", "Output delay for pci_ad IRQ13 SUSPA# INTA# - odd bits", PRESENT_DEC, NOBITS },
+ { 29, 2, "D_PCI_E", "Output delay for pci_ad IRQ13 SUSPA# INTA# - even bits", PRESENT_DEC, NOBITS },
+ { 27, 2, "D_DOTCLK", "Output delay for DOTCLK", PRESENT_DEC, NOBITS },
+ { 25, 2, "D_DRGB_O", "Output delay for DRGB[31:0] - odd bits", PRESENT_DEC, NOBITS },
+ { 23, 2, "D_DRGB_E", "Output delay for DRGB[31:0] HSYNC VSYNC DISPEN VDDEN LDE_MOD - even bits", PRESENT_DEC, NOBITS },
+ { 21, 2, "D_PCI_IN", "Input delay for pci_ad CBE# PAR STOP# FRAME# IRDY# TRDY# DEVSEL# REQ# GNT# CIS", PRESENT_DEC, NOBITS },
+ { 19, 2, "D_TDBGI", "Input delay for TDBGI", PRESENT_DEC, NOBITS },
+ { 17, 2, "D_VIP", "Input delay for VID[15:0] VIP_HSYNC VIP_VSYNC", PRESENT_DEC, NOBITS },
+ { 15, 2, "D_VIPCLK", "Input delay for VIPCLK", PRESENT_DEC, NOBITS },
+ { 13, 1, "H_SDCLK", "Half SDCLK hold select (for cmd addr)", PRESENT_DEC, {
+ { MSR1(1), "Half SDCLK setup for MA and BA" },
+ { MSR1(0), "Full SDCLK setup" },
+ { BITVAL_EOT }
+ }},
+ { 12, 2, "PLL_FD_DEL", "PLL Feedback Delay", PRESENT_BIN, {
+ { MSR1(0), "No feedback delay" },
+ { MSR1(1), "~350 ps" },
+ { MSR1(2), "~700 ps" },
+ { MSR1(3), "~1100 ps (Max feedback delay)" },
+ { BITVAL_EOT }
+ }},
+ { 10, 5, RESERVED },
+ { 5, 1, "DLL_OV", "DLL Override (to DLL)", PRESENT_DEC, NOBITS },
+ { 4, 5, "DLL_OVS/RSDA", "DLL Override Setting or Read Strobe Delay Adjust", PRESENT_DEC, NOBITS },
+ { BITS_EOT }
+ }},
+/*
+ { 0, MSRTYPE_RDONLY, MSR2(0, 0), "TEMPLATE", "Template MSR", {
+ { 63, 64, RESERVED },
+ { BITS_EOT }
+ }},
+*/
+ { MSR_EOT }
+};
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include "msrtool.h"
+
+static int msr_fd[MAX_CORES] = {-1, -1, -1, -1, -1, -1, -1, -1};
+
+int linux_probe(const struct sysdef *system) {
+ struct stat st;
+ return 0 == stat("/dev/cpu/0/msr", &st);
+}
+
+int linux_open(uint8_t cpu, enum SysModes mode) {
+ int fmode;
+ char fn[32];
+ switch (mode) {
+ case SYS_RDWR:
+ fmode = O_RDWR;
+ break;
+ case SYS_WRONLY:
+ fmode = O_WRONLY;
+ break;
+ case SYS_RDONLY:
+ default:
+ fmode = O_RDONLY;
+ break;
+ }
+ if (cpu >= MAX_CORES) {
+ fprintf(stderr, "%s: only cores 0-%d are supported. requested=%d\n", __func__, MAX_CORES, cpu);
+ return 0;
+ }
+ if (snprintf(fn, sizeof(fn), "/dev/cpu/%d/msr", cpu) == -1) {
+ fprintf(stderr, "%s: snprintf: %s\n", __func__, strerror(errno));
+ return 0;
+ }
+ msr_fd[cpu] = open(fn, fmode);
+ if (-1 == msr_fd[cpu]) {
+ fprintf(stderr, "open(%s): %s\n", fn, strerror(errno));
+ return 0;
+ }
+ return 1;
+}
+
+int linux_close(uint8_t cpu) {
+ int ret;
+ if (cpu >= MAX_CORES) {
+ fprintf(stderr, "%s: only cores 0-%d are supported. requested=%d\n", __func__, MAX_CORES, cpu);
+ return 0;
+ }
+ ret = close(msr_fd[cpu]);
+ msr_fd[cpu] = 0;
+ return 0 == ret;
+}
+
+int linux_rdmsr(uint8_t cpu, uint32_t addr, struct msr *val) {
+ if (lseek(msr_fd[cpu], addr, SEEK_SET) == -1) {
+ SYSERROR(lseek, addr);
+ return 0;
+ }
+ if (read(msr_fd[cpu], val, 8) != 8) {
+ SYSERROR(read, addr);
+ return 0;
+ }
+ return 1;
+}
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "msrtool.h"
+
+#define DEFAULT_CPU 0
+static uint8_t cpu = DEFAULT_CPU;
+
+uint8_t targets_found = 0;
+const struct targetdef **targets = NULL;
+const struct sysdef *sys = NULL;
+uint8_t reserved = 0, verbose = 0, quiet = 0;
+
+static struct targetdef alltargets[] = {
+ { "geodelx", "AMD Geode(tm) LX", geodelx_probe, geodelx_msrs },
+ { "cs5536", "AMD Geode(tm) CS5536", cs5536_probe, cs5536_msrs },
+ { TARGET_EOT }
+};
+
+static struct sysdef allsystems[] = {
+ { "linux", "Linux with /dev/cpu/*/msr", linux_probe, linux_open, linux_close, linux_rdmsr },
+ { SYSTEM_EOT }
+};
+
+static void syntax(char *argv[]) {
+ printf("syntax: %s [-hvqrkl] [-c cpu] [-m system] [-t target ...]\n", argv[0]);
+ printf("\t [-i addr=hi[:]lo] | [-s file] | [-d [:]file] | addr...\n");
+ printf(" -h\t show this help text\n");
+ printf(" -v\t be verbose\n");
+ printf(" -q\t be quiet (overrides -v)\n");
+ printf(" -r\t include [Reserved] values\n");
+ printf(" -k\t list all known systems and targets\n");
+ printf(" -l\t list MSRs and bit fields for current target(s) (-kl for ALL targets!)\n");
+ printf(" -c\t access MSRs on the specified CPU, default=%d\n", DEFAULT_CPU);
+ printf(" -m\t force a system, e.g: -m linux\n");
+ printf(" -t\t force a target, can be used multiple times, e.g: -t geodelx -t cs5536\n");
+ printf(" -i\t immediate mode\n");
+ printf("\t decode hex addr=hi:lo for the target without reading hw value\n");
+ printf("\t e.g: -i 4c00000f=f2f100ff56960004\n");
+ printf(" -s\t stream mode\n");
+ printf("\t read one MSR address per line and append current hw value to the line\n");
+ printf("\t use the filename - for stdin/stdout\n");
+ printf("\t using -l -s ignores input and will output all MSRs with values\n");
+ printf(" -d\t diff mode\n");
+ printf("\t read one address and value per line and compare with current hw value,\n");
+ printf("\t printing differences to stdout. use the filename - to read from stdin\n");
+ printf("\t use :file or :- to reverse diff, normally hw values are considered new\n");
+ printf(" addr.. direct mode, read and decode values for the given MSR address(es)\n");
+}
+
+static void *add_target(const struct targetdef *t) {
+ void *tmp;
+ tmp = realloc(targets, (targets_found + 2) * sizeof(struct targetdef *));
+ if (NULL == tmp) {
+ perror("realloc");
+ return tmp;
+ }
+ targets = tmp;
+ targets[targets_found++] = t;
+ targets[targets_found] = NULL;
+ return targets;
+}
+
+int do_stream(const char *streamfn, uint8_t ignoreinput) {
+ char tmpfn[20], line[256];
+ uint8_t tn;
+ size_t start, len;
+ int ret = 1;
+ int fdout = -1;
+ FILE *fin = NULL, *fout = NULL;
+ uint32_t addr, linenum;
+ struct msr m = MSR1(0);
+
+ if (0 == strcmp(streamfn, "-")) {
+ fin = stdin;
+ fout = stdout;
+ } else {
+ if (!ignoreinput) {
+ if (NULL == (fin = fopen(streamfn, "r"))) {
+ perror("fopen()");
+ return 1;
+ }
+ if (snprintf(tmpfn, sizeof(tmpfn), "msrtoolXXXXXX") >= sizeof(tmpfn)) {
+ perror("snprintf");
+ return 1;
+ }
+ if (-1 == (fdout = mkstemp(tmpfn))) {
+ perror("mkstemp");
+ return 1;
+ }
+ if (NULL == (fout = fdopen(fdout, "w"))) {
+ perror("fdopen");
+ return 1;
+ }
+ } else {
+ if (NULL == (fout = fopen(streamfn, "w"))) {
+ perror("fopen");
+ return 1;
+ }
+ }
+ }
+
+ if (!sys->open(cpu, SYS_RDONLY))
+ goto done;
+ if (ignoreinput) {
+ for (tn = 0; tn < targets_found; tn++)
+ if (dumpmsrdefsvals(fout, targets[tn], cpu)) {
+ ret = 1;
+ break;
+ }
+ } else {
+ for (linenum = 1; NULL != fgets(line, sizeof(line), fin); ++linenum) {
+ start = (0 == strncmp("0x", line, 2)) ? 2 : 0;
+ if (1 == sscanf(line + start, "%8x", &addr)) {
+ if (!sys->rdmsr(cpu, addr, &m))
+ goto done;
+ fprintf(fout, "0x%08x 0x%08x%08x\n", addr, m.hi, m.lo);
+ continue;
+ }
+ while (1) {
+ fprintf(fout, "%s", line);
+ len = strlen(line);
+ if (NULL != strchr("\r\n", line[len - 1]))
+ break;
+ if (NULL == fgets(line, sizeof(line), fin))
+ goto read_done;
+ }
+ }
+read_done:
+ if (!feof(fin)) {
+ fprintf(stderr, "%s:%d: fgets: %s\n", streamfn, linenum, strerror(errno));
+ goto done;
+ }
+ }
+ ret = 0;
+done:
+ sys->close(cpu);
+ if (strcmp(streamfn, "-")) {
+ if (ret)
+ unlink(tmpfn);
+ else if (!ignoreinput)
+ rename(tmpfn, streamfn);
+ }
+ if (!ignoreinput)
+ fclose(fin);
+ fclose(fout);
+ return ret;
+}
+
+int do_diff(const char *difffn) {
+ char tmpfn[20], line[512];
+ size_t start, len;
+ int ret = 1, tmp;
+ FILE *fin = NULL, *fout = stdout;
+ uint8_t rev = 0;
+ uint32_t addr, linenum;
+ struct msr mf = MSR1(0), mhw = MSR1(0);
+
+ if (':' == difffn[0]) {
+ rev = 1;
+ ++difffn;
+ }
+ if (0 == strcmp(difffn, "-"))
+ fin = stdin;
+ else if (NULL == (fin = fopen(difffn, "r"))) {
+ perror("fopen()");
+ return 1;
+ }
+
+ if (!sys->open(cpu, SYS_RDONLY))
+ goto done;
+ for (linenum = 1; NULL != fgets(line, sizeof(line), fin); ++linenum) {
+ start = (0 == strncmp("0x", line, 2)) ? 2 : 0;
+ if (sscanf(line + start, "%8x %n%*x", &addr, &tmp) >= 1) {
+ start += tmp;
+ for (len = strlen(line) - 1; NULL != strchr("\r\n", line[len]); --len)
+ line[len] = 0;
+ if (!str2msr(line + start, &mf)) {
+ fprintf(stderr, "%s:%d: invalid MSR value '%s'\n", difffn, linenum, line + start);
+ continue;
+ }
+ if (!sys->rdmsr(cpu, addr, &mhw))
+ goto done;
+ if (diff_msr(fout, addr, rev ? mhw : mf, rev ? mf : mhw))
+ fprintf(fout, "\n");
+ }
+ }
+ if (!feof(fin))
+ fprintf(stderr, "%s:%d: fgets: %s\n", difffn, linenum, strerror(errno));
+ else
+ ret = 0;
+done:
+ sys->close(cpu);
+ if (strcmp(difffn, "-")) {
+ if (ret)
+ unlink(tmpfn);
+ else
+ rename(tmpfn, difffn);
+ fclose(fin);
+ fclose(fout);
+ }
+ return ret;
+}
+
+int main(int argc, char *argv[]) {
+ char c;
+ int ret = 1;
+ const struct sysdef *s;
+ const struct targetdef *t;
+ uint8_t tn, listmsrs = 0, listknown = 0, input = 0;
+ uint32_t addr = 0;
+ const char *streamfn = NULL, *difffn = NULL;
+ struct msr msrval = MSR2(-1, -1);
+ while ((c = getopt(argc, argv, "hqvrklc:m:t:a:i:s:d:")) != -1)
+ switch (c) {
+ case 'h':
+ syntax(argv);
+ return 0;
+ case 'q':
+ quiet = 1;
+ break;
+ case 'v':
+ ++verbose;
+ break;
+ case 'r':
+ reserved = 1;
+ break;
+ case 'k':
+ listknown = 1;
+ break;
+ case 'l':
+ listmsrs = 1;
+ break;
+ case 'c':
+ cpu = atoi(optarg);
+ break;
+ case 'm':
+ for (s = allsystems; !SYSTEM_ISEOT(*s); s++)
+ if (!strcmp(s->name, optarg)) {
+ sys = s;
+ break;
+ }
+ break;
+ case 't':
+ for (t = alltargets; !TARGET_ISEOT(*t); t++)
+ if (!strcmp(t->name, optarg)) {
+ add_target(t);
+ break;
+ }
+ break;
+ case 'i':
+ input = 1;
+ addr = strtoul(optarg, NULL, 16);
+ optarg = strchr(optarg, '=');
+ if (NULL == optarg) {
+ fprintf(stderr, "missing value in -i argument!\n");
+ break;
+ }
+ if (!str2msr(++optarg, &msrval))
+ fprintf(stderr, "invalid value in -i argument!\n");
+ break;
+ case 's':
+ streamfn = optarg;
+ break;
+ case 'd':
+ difffn = optarg;
+ break;
+ default:
+ break;
+ }
+
+ printf_quiet("msrtool %s\n", VERSION);
+
+ if (!sys && !input && !listknown)
+ for (sys = allsystems; !SYSTEM_ISEOT(*sys); sys++) {
+ printf_verbose("Probing for system %s: %s\n", sys->name, sys->prettyname);
+ if (!sys->probe(sys))
+ continue;
+ printf_quiet("Detected system %s: %s\n", sys->name, sys->prettyname);
+ break;
+ }
+
+ if (targets)
+ for (tn = 0; tn < targets_found; tn++)
+ printf_quiet("Forced target %s: %s\n", targets[tn]->name, targets[tn]->prettyname);
+ else
+ for (t = alltargets; !TARGET_ISEOT(*t); t++) {
+ printf_verbose("Probing for target %s: %s\n", t->name, t->prettyname);
+ if (!t->probe(t))
+ continue;
+ printf_quiet("Detected target %s: %s\n", t->name, t->prettyname);
+ add_target(t);
+ }
+
+ printf_quiet("\n");
+ fflush(stdout);
+
+ if (listknown) {
+ printf("Known systems:\n");
+ for (s = allsystems; s->name; s++)
+ printf("%s: %s\n", s->name, s->prettyname);
+ printf("\nKnown targets:\n");
+ for (t = alltargets; t->name; t++) {
+ if (listmsrs && alltargets != t)
+ printf("\n");
+ printf("%s: %s\n", t->name, t->prettyname);
+ if (listmsrs)
+ dumpmsrdefs(t);
+ }
+ printf("\n");
+ return 0;
+ }
+
+ if (sys && !sys->name) {
+ fprintf(stderr, "Unable to detect the current operating system!\n");
+ fprintf(stderr, "Please send a report or patch to coreboot@coreboot.org. Thanks for your help!\n");
+ fprintf(stderr, "\n");
+ }
+
+ if (!targets_found || !targets) {
+ fprintf(stderr, "Unable to detect a known target; can not decode any MSRs! (Use -t to force)\n");
+ fprintf(stderr, "Please send a report or patch to coreboot@coreboot.org. Thanks for your help!\n");
+ fprintf(stderr, "\n");
+ return 1;
+ }
+
+ if (input) {
+ decodemsr(cpu, addr, msrval);
+ return 0;
+ }
+
+ if (sys && !sys->name)
+ return 1;
+
+ if (listmsrs) {
+ if (streamfn)
+ return do_stream(streamfn, 1);
+ for (tn = 0; tn < targets_found; tn++) {
+ if (tn)
+ printf("\n");
+ dumpmsrdefs(targets[tn]);
+ }
+ printf("\n");
+ return 0;
+ }
+
+ if (streamfn)
+ return do_stream(streamfn, 0);
+
+ if (!sys->open(cpu, SYS_RDONLY))
+ return 1;
+
+ if (difffn) {
+ ret = do_diff(difffn);
+ goto done;
+ }
+
+ if (optind == argc) {
+ syntax(argv);
+ printf("\nNo mode or address(es) specified!\n");
+ goto done;
+ }
+
+ for (; optind < argc; optind++) {
+ addr = strtoul(argv[optind], NULL, 16);
+ if (!sys->rdmsr(cpu, addr, &msrval))
+ break;
+ decodemsr(cpu, addr, msrval);
+ }
+ ret = 0;
+done:
+ sys->close(cpu);
+ return ret;
+}
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 MSRTOOL_H
+#define MSRTOOL_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+#define HEXCHARS "0123456789abcdefABCDEF"
+
+enum {
+ MSRTYPE_RDONLY,
+ MSRTYPE_RDWR,
+ MSRTYPE_WRONLY,
+ MSRTYPE_EOT
+} MsrTypes;
+
+enum {
+ PRESENT_RSVD,
+ PRESENT_DEC,
+ PRESENT_BIN,
+ PRESENT_OCT,
+ PRESENT_HEX,
+ PRESENT_HEXDEC
+} PresentTypes;
+
+struct msr {
+ uint32_t hi;
+ uint32_t lo;
+};
+
+struct msrbitvalues {
+ const struct msr value;
+ const char *text;
+};
+
+struct msrbits {
+ const uint8_t start;
+ const uint8_t size;
+ const char *name;
+ const char *desc;
+ const uint8_t present;
+ const struct msrbitvalues bitval[32];
+};
+
+struct msrdef {
+ const uint32_t addr;
+ const uint8_t type;
+ const struct msr resetval;
+ const char *symbol;
+ const char *desc;
+ const struct msrbits bits[65];
+};
+
+#define MSR1(lo) { 0, (lo) }
+#define MSR2(hi,lo) { (hi), (lo) }
+
+#define BITVAL_EOT .text = NULL
+#define BITVAL_ISEOT(bv) (NULL == (bv).text)
+
+#define BITS_EOT .size = 0
+#define BITS_ISEOT(b) (0 == (b).size)
+
+#define MSR_EOT .type = MSRTYPE_EOT
+#define MSR_ISEOT(m) (MSRTYPE_EOT == (m).type)
+
+#define NOBITS {{ BITVAL_EOT }}
+#define RESERVED "RSVD", "Reserved", PRESENT_HEXDEC, NOBITS
+
+#define MAX_CORES 8
+
+struct targetdef {
+ const char *name;
+ const char *prettyname;
+ int (*probe)(const struct targetdef *target);
+ const struct msrdef *msrs;
+};
+
+#define TARGET_EOT .name = NULL
+#define TARGET_ISEOT(t) (NULL == (t).name)
+
+
+enum SysModes {
+ SYS_RDONLY = 0,
+ SYS_WRONLY,
+ SYS_RDWR
+};
+
+struct sysdef {
+ const char *name;
+ const char *prettyname;
+ int (*probe)(const struct sysdef *system);
+ int (*open)(uint8_t cpu, enum SysModes mode);
+ int (*close)(uint8_t cpu);
+ int (*rdmsr)(uint8_t cpu, uint32_t addr, struct msr *val);
+};
+
+#define SYSTEM_EOT .name = NULL
+#define SYSTEM_ISEOT(s) (NULL == (s).name)
+
+
+struct cpuid_t {
+ uint8_t family;
+ uint8_t model;
+ uint8_t stepping;
+ uint8_t ext_family;
+ uint8_t ext_model;
+};
+
+
+extern const struct sysdef *sys;
+
+extern uint8_t targets_found;
+extern const struct targetdef **targets;
+
+extern uint8_t reserved, verbose, quiet;
+
+#define printf_quiet(x...) do { if (!quiet) fprintf(stderr,x); } while(0)
+#define printf_verbose(x...) do { if (verbose && !quiet) fprintf(stderr,x); } while(0)
+
+#define SYSERROR(call, addr) do { \
+ const struct msrdef *m = findmsrdef(addr); \
+ if (m) \
+ fprintf(stderr, "%s: " #call "(0x%08x) %s: %s\n", __func__, addr, m->symbol, strerror(errno)); \
+ else \
+ fprintf(stderr, "%s: " #call "(0x%08x): %s\n", __func__, addr, strerror(errno)); \
+} while (0);
+
+/* sys.c */
+struct cpuid_t *cpuid(void);
+
+/* msrutils.c */
+void hexprint(FILE *f, const struct msr val, const uint8_t bits);
+int msr_eq(const struct msr a, const struct msr b);
+struct msr msr_shl(const struct msr a, const uint8_t bits);
+struct msr msr_shr(const struct msr a, const uint8_t bits);
+void msr_and(struct msr *a, const struct msr b);
+const struct msrdef *findmsrdef(const uint32_t addr);
+void dumpmsrdefs(const struct targetdef *t);
+int dumpmsrdefsvals(FILE *f, const struct targetdef *t, const uint8_t cpu);
+uint8_t str2msr(char *str, struct msr *msr);
+void decodemsr(const uint8_t cpu, const uint32_t addr, const struct msr val);
+uint8_t diff_msr(FILE *fout, const uint32_t addr, const struct msr a, const struct msr b);
+
+
+
+/** system externs **/
+
+/* linux.c */
+extern int linux_probe(const struct sysdef *system);
+extern int linux_open(uint8_t cpu, enum SysModes mode);
+extern int linux_close(uint8_t cpu);
+extern int linux_rdmsr(uint8_t cpu, uint32_t addr, struct msr *val);
+
+
+/** target externs **/
+
+/* geodelx.c */
+extern int geodelx_probe(const struct targetdef *t);
+extern const struct msrdef geodelx_msrs[];
+
+/* cs5536.c */
+extern int cs5536_probe(const struct targetdef *t);
+extern const struct msrdef cs5536_msrs[];
+
+#endif /* MSRTOOL_H */
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <string.h>
+#include <stdlib.h>
+
+#include "msrtool.h"
+
+static void print_bitdef(FILE *f, const struct msrbits *mb, const char *tail) {
+ uint8_t endbit;
+ if (!reserved && !strcmp(mb->name, "RSVD"))
+ return;
+ if (1 == mb->size)
+ fprintf(f, "# %5d", mb->start);
+ else {
+ endbit = mb->start - mb->size + 1;
+ fprintf(f, "# %*d:%d", endbit < 10 ? 3 : 2, mb->start, endbit);
+ }
+ if (!strcmp(mb->name, "RSVD"))
+ fprintf(f, " [%s]", mb->desc);
+ else
+ fprintf(f, " %s %s", mb->name, mb->desc);
+ fprintf(f, "%s", tail);
+}
+
+static void print_bitval(FILE *f, const struct msrbits *mb, const struct msr val) {
+ uint8_t i;
+ struct msr tmp, mask = MSR1(1);
+ const struct msrbitvalues *mbv = mb->bitval;
+ while (mbv->text && !msr_eq(mbv->value, val))
+ mbv++;
+ switch (mb->present) {
+ case PRESENT_BIN:
+ mask = msr_shl(mask, mb->size - 1);
+ for (i = 0; i < mb->size; i++) {
+ memcpy(&tmp, &val, sizeof(val));
+ msr_and(&tmp, mask);
+ fprintf(f, "%d", (tmp.hi || tmp.lo) ? 1 : 0);
+ mask = msr_shr(mask, 1);
+ }
+ /* TODO */
+ break;
+ case PRESENT_DEC:
+ fprintf(f, "%d", val.lo);
+ break;
+ case PRESENT_OCT:
+ fprintf(f, "0%o", val.lo);
+ break;
+ case PRESENT_HEX:
+ hexprint(f, val, mb->size);
+ break;
+ case PRESENT_HEXDEC:
+ hexprint(f, val, mb->size);
+ fprintf(f, " %d", val.lo);
+ break;
+ }
+ if (mbv->text)
+ fprintf(f, ": %s", mbv->text);
+ fprintf(f, "\n");
+}
+
+void hexprint(FILE *f, const struct msr val, const uint8_t bits) {
+ if (bits <= 4)
+ fprintf(f, "0x%x", (uint8_t)(val.lo & 0x0f));
+ else if (bits <= 8)
+ fprintf(f, "0x%02x", (uint8_t)(val.lo & 0xff));
+ else if (bits <= 16)
+ fprintf(f, "0x%04x", (uint16_t)(val.lo & 0xffff));
+ else if (bits <= 32)
+ fprintf(f, "0x%08x", val.lo);
+ else
+ fprintf(f, "0x%08x%08x", val.hi, val.lo);
+}
+
+int msr_eq(const struct msr a, const struct msr b) {
+ return a.hi == b.hi && a.lo == b.lo;
+}
+
+struct msr msr_shl(const struct msr a, const uint8_t bits) {
+ struct msr ret;
+
+ ret.hi = bits < 32 ? a.hi << bits : 0;
+ ret.lo = bits < 32 ? a.lo << bits : 0;
+
+ if (bits < 32)
+ ret.hi |= bits ? a.lo >> (32 - bits) : 0;
+ else
+ ret.hi |= a.lo << (bits - 32);
+
+ return ret;
+}
+
+struct msr msr_shr(const struct msr a, const uint8_t bits) {
+ struct msr ret;
+
+ ret.hi = bits < 32 ? a.hi >> bits : 0;
+ ret.lo = bits < 32 ? a.lo >> bits : 0;
+
+ if (bits < 32)
+ ret.lo |= bits ? a.hi << (32 - bits) : 0;
+ else
+ ret.lo |= a.hi >> (bits - 32);
+
+ return ret;
+}
+
+void msr_and(struct msr *a, const struct msr b) {
+ a->hi &= b.hi;
+ a->lo &= b.lo;
+}
+
+const struct msrdef *findmsrdef(const uint32_t addr) {
+ uint8_t t;
+ const struct msrdef *m;
+ if (!targets)
+ return NULL;
+ for (t = 0; t < targets_found; t++)
+ for (m = targets[t]->msrs; !MSR_ISEOT(*m); m++)
+ if (addr == m->addr)
+ return m;
+ return NULL;
+}
+
+void dumpmsrdefs(const struct targetdef *t) {
+ const struct msrdef *m;
+ const struct msrbits *mb;
+ if (!t)
+ return;
+ printf("# %s MSRs:\n", t->name);
+ for (m = t->msrs; !MSR_ISEOT(*m); m++) {
+ if (t->msrs != m)
+ printf("\n");
+ printf("# %s\n", m->symbol);
+ for (mb = m->bits; mb->size; mb++)
+ print_bitdef(stdout, mb, "\n");
+ printf("0x%08x\n", m->addr);
+ }
+}
+
+int dumpmsrdefsvals(FILE *f, const struct targetdef *t, const uint8_t cpu) {
+ struct msr val = MSR1(0);
+ const struct msrdef *m;
+ const struct msrbits *mb;
+ if (!t)
+ return 1;
+ fprintf(f, "# %s MSRs:\n", t->name);
+ for (m = t->msrs; !MSR_ISEOT(*m); m++) {
+ if (t->msrs != m)
+ fprintf(f, "\n");
+ if (!sys->rdmsr(cpu, m->addr, &val))
+ return 1;
+ fprintf(f, "# %s\n", m->symbol);
+ for (mb = m->bits; mb->size; mb++)
+ print_bitdef(f, mb, "\n");
+ fprintf(f, "0x%08x 0x%08x%08x\n", m->addr, val.hi, val.lo);
+ }
+ return 0;
+}
+
+/**
+ * Parse a hexadecimal string into an MSR value.
+ *
+ * Leading 0x or 0X is optional, the string is always parsed as hexadecimal.
+ * Any non-hexadecimal character can be used to separate the high 32 bits and
+ * the low 32 bits. If there is such a separator, high and low values do not
+ * need to be zero padded. If there is no separator, the last <=8 digits are
+ * the low 32 bits and any characters before them are the high 32 bits.
+ * When there is no separator and less than eight digits, the high 32 bits
+ * are set to 0.
+ * Parsing fails when there is a separator and it is followed by another
+ * non-hexadecimal character.
+ *
+ * @param str The string to parse. The string must be writable but will be
+ * restored before return.
+ * @param msr Pointer to the struct msr where the value will be stored.
+ * @return 1 on success, 0 on parse failure. msr is unchanged on failure.
+ */
+uint8_t str2msr(char *str, struct msr *msr) {
+ char c;
+ size_t len, lo;
+ if (0 == strncmp(str, "0x", 2) || 0 == strncmp(str, "0X", 2))
+ str += 2;
+ len = strspn(str, HEXCHARS);
+ if (len <= 8 && 0 == str[len]) {
+ msr->hi = 0;
+ lo = 0;
+ } else if (len <= 8) {
+ lo = len + strcspn(str + len, HEXCHARS);
+ if (0 == len && 0 == strspn(str + lo, HEXCHARS))
+ return 0;
+ c = str[len];
+ str[len] = 0;
+ msr->hi = strtoul(str, NULL, 16);
+ str[len] = c;
+ } else {
+ lo = len - 8;
+ c = str[lo];
+ str[lo] = 0;
+ msr->hi = strtoul(str, NULL, 16);
+ str[lo] = c;
+ }
+ msr->lo = strtoul(str + lo, NULL, 16);
+ return 1;
+}
+
+void decodemsr(const uint8_t cpu, const uint32_t addr, const struct msr val) {
+ struct msr bitval, mask;
+ const struct msrdef *m = findmsrdef(addr);
+ const struct msrbits *mb;
+
+ if (m)
+ printf("# %s ", m->symbol);
+ printf("0x%08x = 0x%08x%08x\n", addr, val.hi, val.lo);
+ if (!m) {
+ fprintf(stderr, "Sorry - no definition exists for this MSR! Please add it and send a signed-off\n");
+ fprintf(stderr, "patch to coreboot@coreboot.org. Thanks for your help!\n");
+ return;
+ }
+
+ for (mb = m->bits; mb->size; mb++) {
+ if (!reserved && 0 == strcmp(mb->name, "RSVD"))
+ continue;
+ print_bitdef(stdout, mb, " = ");
+ mask.hi = mask.lo = 0xffffffff;
+ mask = msr_shr(mask, 64 - mb->size);
+ bitval = msr_shr(val, mb->start - mb->size + 1);
+ msr_and(&bitval, mask);
+ print_bitval(stdout, mb, bitval);
+ }
+}
+
+/**
+ * Compare two MSR values and print any differences with field definitions and
+ * both old and new values decoded.
+ *
+ * @param f Output stream.
+ * @param addr MSR address.
+ * @param a Left value.
+ * @param b Right value.
+ * @return 1 when a and b differ, 0 when they are equal or only reserved bits
+ * differ and processing of reserved bits was not requested (with -r).
+ */
+uint8_t diff_msr(FILE *f, const uint32_t addr, const struct msr a, const struct msr b) {
+ uint8_t ret = 0, first = 1;
+ struct msr aval, bval, mask;
+ const struct msrdef *m = findmsrdef(addr);
+ const struct msrbits *mb;
+
+ if (a.hi == b.hi && a.lo == b.lo)
+ return 0;
+
+ if (!m) {
+ fprintf(stderr, "MSR 0x%08x has no definition! Please add it and send a Signed-off-by patch\n", addr);
+ fprintf(stderr, "to coreboot@coreboot.org. Thank you for your help!\n");
+ return 1;
+ }
+
+ for (mb = m->bits; mb->size; mb++) {
+ if (!reserved && 0 == strcmp(mb->name, "RSVD"))
+ continue;
+ mask.hi = mask.lo = 0xffffffff;
+ mask = msr_shr(mask, 64 - mb->size);
+ aval = msr_shr(a, mb->start - mb->size + 1);
+ bval = msr_shr(b, mb->start - mb->size + 1);
+ msr_and(&aval, mask);
+ msr_and(&bval, mask);
+ if (msr_eq(aval, bval))
+ continue;
+ if (first) {
+ fprintf(f, "# %s\n", m->symbol);
+ fprintf(f, "-0x%08x 0x%08x%08x\n", addr, a.hi, a.lo);
+ fprintf(f, "+0x%08x 0x%08x%08x\n", addr, b.hi, b.lo);
+ first = 0;
+ ret = 1;
+ }
+ print_bitdef(f, mb, "\n-");
+ print_bitval(f, mb, aval);
+ fprintf(f, "+");
+ print_bitval(f, mb, bval);
+ }
+ return ret;
+}
--- /dev/null
+/*
+ * This file is part of msrtool.
+ *
+ * Copyright (c) 2008 Peter Stuge <peter@stuge.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 "msrtool.h"
+
+static struct cpuid_t id;
+
+struct cpuid_t *cpuid(void) {
+ uint32_t outeax;
+ asm ("cpuid" : "=a" (outeax) : "a" (1) : "%ebx", "%ecx", "%edx");
+ id.stepping = outeax & 0xf;
+ outeax >>= 4;
+ id.model = outeax & 0xf;
+ outeax >>= 4;
+ id.family = outeax & 0xf;
+ outeax >>= 8;
+ id.ext_model = outeax & 0xf;
+ outeax >>= 4;
+ id.ext_family = outeax & 0xff;
+ if (0xf == id.family) {
+ /* Intel says always do this, AMD says only for family f */
+ id.model |= (id.ext_model << 4);
+ id.family += id.ext_family;
+ }
+ return &id;
+}
projects / coreboot.git / commitdiff