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system76-coreboot/util/msrtool/msrtool.c
Stefan Reinauer 37f3935029 port msrtool to darwin. 
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>

with minor changes to allow 32bit and 64bit compilation and (I hope), Peter's
concerns addressed.



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4624 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-09-01 10:03:01 +00:00

414 lines
10 KiB
C
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/*
* 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 <pci/pci.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;
struct pci_access *pacc = NULL;
static struct targetdef alltargets[] = {
{ "geodelx", "AMD Geode(tm) LX", geodelx_probe, geodelx_msrs },
{ "cs5536", "AMD Geode(tm) CS5536", cs5536_probe, cs5536_msrs },
{ "K8", "AMD K8 Family", k8_probe, k8_msrs },
{ TARGET_EOT }
};
static struct sysdef allsystems[] = {
{ "linux", "Linux with /dev/cpu/*/msr", linux_probe, linux_open, linux_close, linux_rdmsr },
{ "darwin", "OS X with DirectIO", darwin_probe, darwin_open, darwin_close, darwin_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 = msraddrbyname(optarg);
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);
pacc = pci_alloc();
if (NULL == pacc) {
fprintf(stderr, "Could not initialize PCI library! pci_alloc() failed.\n");
return 1;
}
pci_init(pacc);
pci_scan_bus(pacc);
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, "On Linux, please do 'modprobe msr' and retry.\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 = msraddrbyname(argv[optind]);
if (!sys->rdmsr(cpu, addr, &msrval))
break;
decodemsr(cpu, addr, msrval);
}
ret = 0;
done:
sys->close(cpu);
return ret;
}
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