Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2012 The ChromiumOS Authors. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 20 | #include <stdio.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 23 | #include <unistd.h> |
| 24 | #include <getopt.h> |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 25 | #include <errno.h> |
| 26 | #include <fcntl.h> |
| 27 | #include <sys/types.h> |
| 28 | #include <sys/stat.h> |
| 29 | #include <sys/mman.h> |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 30 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 31 | #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) |
| 32 | #define MAP_BYTES (1024*1024) |
| 33 | |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 34 | #include "boot/coreboot_tables.h" |
| 35 | |
| 36 | typedef uint16_t u16; |
| 37 | typedef uint32_t u32; |
| 38 | typedef uint64_t u64; |
| 39 | |
| 40 | #include "cbmem.h" |
| 41 | #include "timestamp.h" |
| 42 | |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 43 | #define CBMEM_VERSION "1.0" |
| 44 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 45 | /* verbose output? */ |
| 46 | static int verbose = 0; |
| 47 | #define debug(x...) if(verbose) printf(x) |
| 48 | |
| 49 | /* File handle used to access /dev/mem */ |
| 50 | static int fd; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 51 | |
| 52 | /* |
| 53 | * calculate ip checksum (16 bit quantities) on a passed in buffer. In case |
| 54 | * the buffer length is odd last byte is excluded from the calculation |
| 55 | */ |
| 56 | static u16 ipchcksum(const void *addr, unsigned size) |
| 57 | { |
| 58 | const u16 *p = addr; |
| 59 | unsigned i, n = size / 2; /* don't expect odd sized blocks */ |
| 60 | u32 sum = 0; |
| 61 | |
| 62 | for (i = 0; i < n; i++) |
| 63 | sum += p[i]; |
| 64 | |
| 65 | sum = (sum >> 16) + (sum & 0xffff); |
| 66 | sum += (sum >> 16); |
| 67 | sum = ~sum & 0xffff; |
| 68 | return (u16) sum; |
| 69 | } |
| 70 | |
| 71 | /* |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 72 | * Functions to map / unmap physical memory into virtual address space. These |
| 73 | * functions always maps 1MB at a time and can only map one area at once. |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 74 | */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 75 | static void *mapped_virtual; |
| 76 | static void *map_memory(u64 physical) |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 77 | { |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 78 | void *v; |
| 79 | off_t p; |
| 80 | int page = getpagesize(); |
| 81 | |
| 82 | /* Mapped memory must be aligned to page size */ |
| 83 | p = physical & ~(page - 1); |
| 84 | |
| 85 | debug("Mapping 1MB of physical memory at %zx.\n", p); |
| 86 | |
| 87 | v = mmap(NULL, MAP_BYTES, PROT_READ, MAP_SHARED, fd, p); |
| 88 | |
| 89 | if (v == MAP_FAILED) { |
| 90 | fprintf(stderr, "Failed to mmap /dev/mem: %s\n", |
| 91 | strerror(errno)); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 92 | exit(1); |
| 93 | } |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 94 | |
| 95 | /* Remember what we actually mapped ... */ |
| 96 | mapped_virtual = v; |
| 97 | |
| 98 | /* ... but return address to the physical memory that was requested */ |
| 99 | v += physical & (page-1); |
| 100 | |
| 101 | return v; |
| 102 | } |
| 103 | |
| 104 | static void unmap_memory(void) |
| 105 | { |
| 106 | debug("Unmapping 1MB of virtual memory at %p.\n", mapped_virtual); |
| 107 | munmap(mapped_virtual, MAP_BYTES); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | /* |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 111 | * Try finding the timestamp table and coreboot cbmem console starting from the |
| 112 | * passed in memory offset. Could be called recursively in case a forwarding |
| 113 | * entry is found. |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 114 | * |
| 115 | * Returns pointer to a memory buffer containg the timestamp table or zero if |
| 116 | * none found. |
| 117 | */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 118 | |
| 119 | static struct lb_cbmem_ref timestamps; |
| 120 | static struct lb_cbmem_ref console; |
| 121 | |
| 122 | static int parse_cbtable(u64 address) |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 123 | { |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 124 | int i, found = 0; |
| 125 | void *buf; |
| 126 | |
| 127 | debug("Looking for coreboot table at %lx\n", address); |
| 128 | buf = map_memory(address); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 129 | |
| 130 | /* look at every 16 bytes within 4K of the base */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 131 | |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 132 | for (i = 0; i < 0x1000; i += 0x10) { |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 133 | struct lb_header *lbh; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 134 | struct lb_record* lbr_p; |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 135 | void *lbtable; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 136 | int j; |
| 137 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 138 | lbh = (struct lb_header *)(buf + i); |
| 139 | if (memcmp(lbh->signature, "LBIO", sizeof(lbh->signature)) || |
| 140 | !lbh->header_bytes || |
| 141 | ipchcksum(lbh, sizeof(*lbh))) { |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 142 | continue; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 143 | } |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 144 | lbtable = buf + i + lbh->header_bytes; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 145 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 146 | if (ipchcksum(lbtable, lbh->table_bytes) != |
| 147 | lbh->table_checksum) { |
| 148 | debug("Signature found, but wrong checksum.\n"); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 149 | continue; |
| 150 | } |
| 151 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 152 | found = 1; |
| 153 | debug("Found!\n"); |
| 154 | |
| 155 | for (j = 0; j < lbh->table_bytes; j += lbr_p->size) { |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 156 | /* look for the timestamp table */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 157 | lbr_p = (struct lb_record*) ((char *)lbtable + j); |
| 158 | debug(" coreboot table entry 0x%02x\n", lbr_p->tag); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 159 | switch (lbr_p->tag) { |
| 160 | case LB_TAG_TIMESTAMPS: { |
Stefan Reinauer | d7144dc | 2013-01-07 15:25:37 -0800 | [diff] [blame^] | 161 | debug(" Found timestamp table.\n"); |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 162 | timestamps = *(struct lb_cbmem_ref *) lbr_p; |
| 163 | continue; |
| 164 | } |
| 165 | case LB_TAG_CBMEM_CONSOLE: { |
Stefan Reinauer | d7144dc | 2013-01-07 15:25:37 -0800 | [diff] [blame^] | 166 | debug(" Found cbmem console.\n"); |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 167 | console = *(struct lb_cbmem_ref *) lbr_p; |
| 168 | continue; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 169 | } |
| 170 | case LB_TAG_FORWARD: { |
| 171 | /* |
| 172 | * This is a forwarding entry - repeat the |
| 173 | * search at the new address. |
| 174 | */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 175 | struct lb_forward lbf_p = |
| 176 | *(struct lb_forward *) lbr_p; |
Stefan Reinauer | d7144dc | 2013-01-07 15:25:37 -0800 | [diff] [blame^] | 177 | debug(" Found forwarding entry.\n"); |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 178 | unmap_memory(); |
| 179 | return parse_cbtable(lbf_p.forward); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 180 | } |
| 181 | default: |
| 182 | break; |
| 183 | } |
| 184 | |
| 185 | } |
| 186 | } |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 187 | unmap_memory(); |
| 188 | |
| 189 | return found; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | /* |
| 193 | * read CPU frequency from a sysfs file, return an frequency in Kilohertz as |
| 194 | * an int or exit on any error. |
| 195 | */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 196 | static u64 get_cpu_freq_KHz(void) |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 197 | { |
| 198 | FILE *cpuf; |
| 199 | char freqs[100]; |
| 200 | int size; |
| 201 | char *endp; |
| 202 | u64 rv; |
| 203 | |
| 204 | const char* freq_file = |
| 205 | "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"; |
| 206 | |
| 207 | cpuf = fopen(freq_file, "r"); |
| 208 | if (!cpuf) { |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 209 | fprintf(stderr, "Could not open %s: %s\n", |
| 210 | freq_file, strerror(errno)); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 211 | exit(1); |
| 212 | } |
| 213 | |
| 214 | memset(freqs, 0, sizeof(freqs)); |
| 215 | size = fread(freqs, 1, sizeof(freqs), cpuf); |
| 216 | if (!size || (size == sizeof(freqs))) { |
| 217 | fprintf(stderr, "Wrong number of bytes(%d) read from %s\n", |
| 218 | size, freq_file); |
| 219 | exit(1); |
| 220 | } |
| 221 | fclose(cpuf); |
| 222 | rv = strtoull(freqs, &endp, 10); |
| 223 | |
| 224 | if (*endp == '\0' || *endp == '\n') |
| 225 | return rv; |
| 226 | fprintf(stderr, "Wrong formatted value ^%s^ read from %s\n", |
| 227 | freqs, freq_file); |
| 228 | exit(1); |
| 229 | } |
| 230 | |
| 231 | /* |
| 232 | * Print an integer in 'normalized' form - with commas separating every three |
| 233 | * decimal orders. The 'comma' parameter indicates if a comma is needed after |
| 234 | * the value is printed. |
| 235 | */ |
| 236 | static void print_norm(u64 v, int comma) |
| 237 | { |
| 238 | int first_triple = 1; |
| 239 | |
| 240 | if (v > 1000) { |
| 241 | /* print the higher order sections first */ |
| 242 | print_norm(v / 1000, 1); |
| 243 | first_triple = 0; |
| 244 | } |
| 245 | if (first_triple) |
| 246 | printf("%d", (u32)(v % 1000)); |
| 247 | else |
| 248 | printf("%3.3d", (u32)(v % 1000)); |
| 249 | if (comma) |
| 250 | printf(","); |
| 251 | } |
| 252 | |
| 253 | /* dump the timestamp table */ |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 254 | static void dump_timestamps(void) |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 255 | { |
| 256 | int i; |
| 257 | u64 cpu_freq_MHz = get_cpu_freq_KHz() / 1000; |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 258 | struct timestamp_table *tst_p; |
| 259 | |
| 260 | if (timestamps.tag != LB_TAG_TIMESTAMPS) { |
| 261 | fprintf(stderr, "No timestamps found in coreboot table.\n"); |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | tst_p = (struct timestamp_table *) |
| 266 | map_memory((unsigned long)timestamps.cbmem_addr); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 267 | |
| 268 | printf("%d entries total:\n\n", tst_p->num_entries); |
| 269 | for (i = 0; i < tst_p->num_entries; i++) { |
| 270 | const struct timestamp_entry *tse_p = tst_p->entries + i; |
| 271 | |
| 272 | printf("%4d:", tse_p->entry_id); |
| 273 | print_norm(tse_p->entry_stamp / cpu_freq_MHz, 0); |
| 274 | if (i) { |
| 275 | printf(" ("); |
| 276 | print_norm((tse_p->entry_stamp - |
| 277 | tse_p[-1].entry_stamp) / |
| 278 | cpu_freq_MHz, 0); |
| 279 | printf(")"); |
| 280 | } |
| 281 | printf("\n"); |
| 282 | } |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 283 | |
| 284 | unmap_memory(); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 285 | } |
| 286 | |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 287 | /* dump the cbmem console */ |
| 288 | static void dump_console(void) |
| 289 | { |
| 290 | void *console_p; |
| 291 | char *console_c; |
| 292 | uint32_t size; |
| 293 | |
| 294 | if (console.tag != LB_TAG_CBMEM_CONSOLE) { |
| 295 | fprintf(stderr, "No console found in coreboot table.\n"); |
| 296 | return; |
| 297 | } |
| 298 | |
| 299 | console_p = map_memory((unsigned long)console.cbmem_addr); |
| 300 | /* The in-memory format of the console area is: |
| 301 | * u32 size |
| 302 | * u32 cursor |
| 303 | * char console[size] |
| 304 | * Hence we have to add 8 to get to the actual console string. |
| 305 | */ |
| 306 | size = *(uint32_t *)console_p; |
| 307 | console_c = malloc(size + 1); |
| 308 | if (!console_c) { |
| 309 | fprintf(stderr, "Not enough memory for console.\n"); |
| 310 | exit(1); |
| 311 | } |
| 312 | |
| 313 | memcpy(console_c, console_p + 8, size); |
| 314 | console_c[size] = 0; |
| 315 | |
| 316 | printf("%s", console_c); |
| 317 | |
| 318 | free(console_c); |
| 319 | |
| 320 | unmap_memory(); |
| 321 | } |
| 322 | |
| 323 | |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 324 | void print_version(void) |
| 325 | { |
| 326 | printf("cbmem v%s -- ", CBMEM_VERSION); |
| 327 | printf("Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.\n\n"); |
| 328 | printf( |
| 329 | "This program is free software: you can redistribute it and/or modify\n" |
| 330 | "it under the terms of the GNU General Public License as published by\n" |
| 331 | "the Free Software Foundation, version 2 of the License.\n\n" |
| 332 | "This program is distributed in the hope that it will be useful,\n" |
| 333 | "but WITHOUT ANY WARRANTY; without even the implied warranty of\n" |
| 334 | "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" |
| 335 | "GNU General Public License for more details.\n\n" |
| 336 | "You should have received a copy of the GNU General Public License\n" |
| 337 | "along with this program. If not, see <http://www.gnu.org/licenses/>.\n\n"); |
| 338 | } |
| 339 | |
| 340 | void print_usage(const char *name) |
| 341 | { |
| 342 | printf("usage: %s [-vh?]\n", name); |
| 343 | printf("\n" |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 344 | " -c | --console: print cbmem console\n" |
| 345 | " -t | --timestamps: print timestamp information\n" |
| 346 | " -V | --verbose: verbose (debugging) output\n" |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 347 | " -v | --version: print the version\n" |
| 348 | " -h | --help: print this help\n" |
| 349 | "\n"); |
| 350 | exit(1); |
| 351 | } |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 352 | |
| 353 | int main(int argc, char** argv) |
| 354 | { |
| 355 | int j; |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 356 | static const int possible_base_addresses[] = { 0, 0xf0000 }; |
| 357 | |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 358 | int print_defaults = 1; |
| 359 | int print_console = 0; |
| 360 | int print_timestamps = 0; |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 361 | |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 362 | int opt, option_index = 0; |
| 363 | static struct option long_options[] = { |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 364 | {"console", 0, 0, 'c'}, |
| 365 | {"timestamps", 0, 0, 't'}, |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 366 | {"verbose", 0, 0, 'V'}, |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 367 | {"version", 0, 0, 'v'}, |
| 368 | {"help", 0, 0, 'h'}, |
| 369 | {0, 0, 0, 0} |
| 370 | }; |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 371 | while ((opt = getopt_long(argc, argv, "ctVvh?", |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 372 | long_options, &option_index)) != EOF) { |
| 373 | switch (opt) { |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 374 | case 'c': |
| 375 | print_console = 1; |
| 376 | print_defaults = 0; |
| 377 | break; |
| 378 | case 't': |
| 379 | print_timestamps = 1; |
| 380 | print_defaults = 0; |
| 381 | break; |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 382 | case 'V': |
| 383 | verbose = 1; |
| 384 | break; |
Stefan Reinauer | 1e0e556 | 2013-01-02 15:43:56 -0800 | [diff] [blame] | 385 | case 'v': |
| 386 | print_version(); |
| 387 | exit(0); |
| 388 | break; |
| 389 | case 'h': |
| 390 | case '?': |
| 391 | default: |
| 392 | print_usage(argv[0]); |
| 393 | exit(0); |
| 394 | break; |
| 395 | } |
| 396 | } |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 397 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 398 | fd = open("/dev/mem", O_RDONLY, 0); |
| 399 | if (fd < 0) { |
| 400 | fprintf(stderr, "Failed to gain memory access: %s\n", |
| 401 | strerror(errno)); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 402 | return 1; |
| 403 | } |
| 404 | |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 405 | /* Find and parse coreboot table */ |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 406 | for (j = 0; j < ARRAY_SIZE(possible_base_addresses); j++) { |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 407 | if (parse_cbtable(possible_base_addresses[j])) |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 408 | break; |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 409 | } |
| 410 | |
Stefan Reinauer | 19f8756 | 2013-01-07 13:37:12 -0800 | [diff] [blame] | 411 | if (print_console) |
| 412 | dump_console(); |
| 413 | |
| 414 | if (print_defaults || print_timestamps) |
Stefan Reinauer | 05cbce6 | 2013-01-03 14:30:33 -0800 | [diff] [blame] | 415 | dump_timestamps(); |
| 416 | |
| 417 | close(fd); |
Vadim Bendebury | 6d18fd0 | 2012-09-27 19:24:07 -0700 | [diff] [blame] | 418 | return 0; |
| 419 | } |