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/*-
* Copyright (c) 2009 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*
* $FreeBSD$
*/
/*
* cfi [-f device] op
* (default device is /dev/cfi0).
*/
#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/cfictl.h>
#include <err.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
const char *progname;
const char *dvname;
static void
usage(void)
{
fprintf(stderr, "usage: %s [-f device] op...\n", progname);
fprintf(stderr, "where op's are:\n");
fprintf(stderr, "fact\t\tread factory PR segment\n");
fprintf(stderr, "oem\t\tread OEM segment\n");
fprintf(stderr, "woem value\twrite OEM segment\n");
fprintf(stderr, "plr\t\tread PLR\n");
fprintf(stderr, "wplr\t\twrite PLR\n");
exit(-1);
}
static int
getfd(int mode)
{
int fd = open(dvname, mode, 0);
if (fd < 0)
err(-1, "open");
return fd;
}
static uint64_t
getfactorypr(void)
{
uint64_t v;
int fd = getfd(O_RDONLY);
if (ioctl(fd, CFIOCGFACTORYPR, &v) < 0)
err(-1, "ioctl(CFIOCGFACTORYPR)");
close(fd);
return v;
}
static uint64_t
getoempr(void)
{
uint64_t v;
int fd = getfd(O_RDONLY);
if (ioctl(fd, CFIOCGOEMPR, &v) < 0)
err(-1, "ioctl(CFIOCGOEMPR)");
close(fd);
return v;
}
static void
setoempr(uint64_t v)
{
int fd = getfd(O_WRONLY);
if (ioctl(fd, CFIOCSOEMPR, &v) < 0)
err(-1, "ioctl(CFIOCGOEMPR)");
close(fd);
}
static uint32_t
getplr(void)
{
uint32_t plr;
int fd = getfd(O_RDONLY);
if (ioctl(fd, CFIOCGPLR, &plr) < 0)
err(-1, "ioctl(CFIOCGPLR)");
close(fd);
return plr;
}
static void
setplr(void)
{
int fd = getfd(O_WRONLY);
if (ioctl(fd, CFIOCSPLR, 0) < 0)
err(-1, "ioctl(CFIOCPLR)");
close(fd);
}
int
main(int argc, char *argv[])
{
dvname = getenv("CFI");
if (dvname == NULL)
dvname = "/dev/cfi0";
progname = argv[0];
if (argc > 1) {
if (strcmp(argv[1], "-f") == 0) {
if (argc < 2)
errx(1, "missing device name for -f option");
dvname = argv[2];
argc -= 2, argv += 2;
} else if (strcmp(argv[1], "-?") == 0)
usage();
}
for (; argc > 1; argc--, argv++) {
if (strcasecmp(argv[1], "fact") == 0) {
printf("0x%llx\n", (unsigned long long) getfactorypr());
} else if (strcasecmp(argv[1], "oem") == 0) {
printf("0x%llx\n", (unsigned long long) getoempr());
} else if (strcasecmp(argv[1], "woem") == 0) {
if (argc < 2)
errx(1, "missing value for woem");
setoempr((uint64_t) strtoull(argv[2], NULL, 0));
argc--, argv++;
} else if (strcasecmp(argv[1], "plr") == 0) {
printf("0x%x\n", getplr());
} else if (strcasecmp(argv[1], "wplr") == 0) {
setplr();
} else
usage();
}
}
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