1/*- 2 * Copyright (c) 2009 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD: releng/11.0/tools/tools/cfi/cfi.c 219521 2011-03-11 18:48:28Z brucec $ 30 */ 31 32/* 33 * cfi [-f device] op 34 * (default device is /dev/cfi0). 35 */ 36#include <sys/types.h> 37#include <sys/file.h> 38#include <sys/ioctl.h> 39#include <sys/cfictl.h> 40 41#include <err.h> 42#include <getopt.h> 43#include <stdio.h> 44#include <stdlib.h> 45#include <string.h> 46#include <unistd.h> 47 48const char *progname; 49const char *dvname; 50 51static void 52usage(void) 53{ 54 fprintf(stderr, "usage: %s [-f device] op...\n", progname); 55 fprintf(stderr, "where op's are:\n"); 56 fprintf(stderr, "fact\t\tread factory PR segment\n"); 57 fprintf(stderr, "oem\t\tread OEM segment\n"); 58 fprintf(stderr, "woem value\twrite OEM segment\n"); 59 fprintf(stderr, "plr\t\tread PLR\n"); 60 fprintf(stderr, "wplr\t\twrite PLR\n"); 61 exit(-1); 62} 63 64static int 65getfd(int mode) 66{ 67 int fd = open(dvname, mode, 0); 68 if (fd < 0) 69 err(-1, "open"); 70 return fd; 71} 72 73static uint64_t 74getfactorypr(void) 75{ 76 uint64_t v; 77 int fd = getfd(O_RDONLY); 78 if (ioctl(fd, CFIOCGFACTORYPR, &v) < 0) 79 err(-1, "ioctl(CFIOCGFACTORYPR)"); 80 close(fd); 81 return v; 82} 83 84static uint64_t 85getoempr(void) 86{ 87 uint64_t v; 88 int fd = getfd(O_RDONLY); 89 if (ioctl(fd, CFIOCGOEMPR, &v) < 0) 90 err(-1, "ioctl(CFIOCGOEMPR)"); 91 close(fd); 92 return v; 93} 94 95static void 96setoempr(uint64_t v) 97{ 98 int fd = getfd(O_WRONLY); 99 if (ioctl(fd, CFIOCSOEMPR, &v) < 0) 100 err(-1, "ioctl(CFIOCGOEMPR)"); 101 close(fd); 102} 103 104static uint32_t 105getplr(void) 106{ 107 uint32_t plr; 108 int fd = getfd(O_RDONLY); 109 if (ioctl(fd, CFIOCGPLR, &plr) < 0) 110 err(-1, "ioctl(CFIOCGPLR)"); 111 close(fd); 112 return plr; 113} 114 115static void 116setplr(void) 117{ 118 int fd = getfd(O_WRONLY); 119 if (ioctl(fd, CFIOCSPLR, 0) < 0) 120 err(-1, "ioctl(CFIOCPLR)"); 121 close(fd); 122} 123 124int 125main(int argc, char *argv[]) 126{ 127 dvname = getenv("CFI"); 128 if (dvname == NULL) 129 dvname = "/dev/cfi0"; 130 progname = argv[0]; 131 if (argc > 1) { 132 if (strcmp(argv[1], "-f") == 0) { 133 if (argc < 2) 134 errx(1, "missing device name for -f option"); 135 dvname = argv[2]; 136 argc -= 2, argv += 2; 137 } else if (strcmp(argv[1], "-?") == 0) 138 usage(); 139 } 140 for (; argc > 1; argc--, argv++) { 141 if (strcasecmp(argv[1], "fact") == 0) { 142 printf("0x%llx\n", (unsigned long long) getfactorypr()); 143 } else if (strcasecmp(argv[1], "oem") == 0) { 144 printf("0x%llx\n", (unsigned long long) getoempr()); 145 } else if (strcasecmp(argv[1], "woem") == 0) { 146 if (argc < 2) 147 errx(1, "missing value for woem"); 148 setoempr((uint64_t) strtoull(argv[2], NULL, 0)); 149 argc--, argv++; 150 } else if (strcasecmp(argv[1], "plr") == 0) { 151 printf("0x%x\n", getplr()); 152 } else if (strcasecmp(argv[1], "wplr") == 0) { 153 setplr(); 154 } else 155 usage(); 156 } 157} 158