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-rw-r--r--util/msrtool/msrtool.c399
1 files changed, 399 insertions, 0 deletions
diff --git a/util/msrtool/msrtool.c b/util/msrtool/msrtool.c
new file mode 100644
index 0000000000..6f0b3a0109
--- /dev/null
+++ b/util/msrtool/msrtool.c
@@ -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;
+}
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