msrtool: Release Candidate 1
msrtool can decode MSRs and print the value of every field in human readable form. It can also be used to save a set of MSRs to a file, and at a later time compare the saved values with current values in hardware. Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3766 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Peter Stuge
Stefan Reinauer
parent
d24fe7e80e
commit
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GNU GENERAL PUBLIC LICENSE
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Version 2, June 1991
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@ -0,0 +1,66 @@
|
|||
# Makefile for msrtool
|
||||
#
|
||||
# This file is part of msrtool.
|
||||
#
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||||
# 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,
|
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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.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
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# along with this program; if not, write to the Free Software
|
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# 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 $^ > $@
|
||||
|
||||
.PHONY: all distprep clean distclean mrproper dep
|
||||
|
||||
-include Makefile.deps
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
Systems
|
||||
-------
|
||||
FreeBSD #defines: see svn diff -r 3697:3698 util/
|
||||
|
||||
Other ideas
|
||||
-----------
|
||||
Move MSR definitions and probe instructions into an external text file?
|
||||
Handle PCI registers as well?
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|
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@ -0,0 +1,162 @@
|
|||
#!/bin/sh
|
||||
#
|
||||
# This file is part of msrtool.
|
||||
#
|
||||
# Copyright (c) 2008 Peter Stuge <peter@stuge.se>
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
#
|
||||
|
||||
# If this is left unset, try to set the version string from the highest
|
||||
# revision number of the checked out files later.
|
||||
VERSION=""
|
||||
|
||||
REV="$(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
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
/*
|
||||
* 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 }
|
||||
};
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
/*
|
||||
* 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 }
|
||||
};
|
||||
|
|
@ -0,0 +1,88 @@
|
|||
/*
|
||||
* 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;
|
||||
}
|
||||
|
|
@ -0,0 +1,399 @@
|
|||
/*
|
||||
* 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;
|
||||
}
|
||||
|
|
@ -0,0 +1,183 @@
|
|||
/*
|
||||
* 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 */
|
||||
|
|
@ -0,0 +1,299 @@
|
|||
/*
|
||||
* 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;
|
||||
}
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* 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;
|
||||
}
|
||||
Loading…
Reference in New Issue