Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the libpayload project. |
| 3 | * |
| 4 | * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| 5 | * Copyright (C) 2009 coresystems GmbH |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <libpayload-config.h> |
| 32 | #include <libpayload.h> |
| 33 | #include <coreboot_tables.h> |
| 34 | #include <stdint.h> |
| 35 | |
| 36 | /* |
| 37 | * The code in this file applies to all coreboot architectures. Some coreboot |
| 38 | * table tags are architecture specific, they are handled by their respective |
| 39 | * cb_parse_arch_specific() functions. |
| 40 | */ |
| 41 | |
| 42 | /* === Parsing code === */ |
| 43 | /* This is the generic parsing code. */ |
| 44 | |
| 45 | static void cb_parse_memory(void *ptr, struct sysinfo_t *info) |
| 46 | { |
| 47 | struct cb_memory *mem = ptr; |
| 48 | int count = MEM_RANGE_COUNT(mem); |
| 49 | int i; |
| 50 | |
| 51 | if (count > SYSINFO_MAX_MEM_RANGES) |
| 52 | count = SYSINFO_MAX_MEM_RANGES; |
| 53 | |
| 54 | info->n_memranges = 0; |
| 55 | |
| 56 | for (i = 0; i < count; i++) { |
| 57 | struct cb_memory_range *range = MEM_RANGE_PTR(mem, i); |
| 58 | |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 59 | #if IS_ENABLED(CONFIG_LP_MEMMAP_RAM_ONLY) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 60 | if (range->type != CB_MEM_RAM) |
| 61 | continue; |
| 62 | #endif |
| 63 | |
| 64 | info->memrange[info->n_memranges].base = |
| 65 | cb_unpack64(range->start); |
| 66 | |
| 67 | info->memrange[info->n_memranges].size = |
| 68 | cb_unpack64(range->size); |
| 69 | |
| 70 | info->memrange[info->n_memranges].type = range->type; |
| 71 | |
| 72 | info->n_memranges++; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | static void cb_parse_serial(void *ptr, struct sysinfo_t *info) |
| 77 | { |
| 78 | info->serial = ((struct cb_serial *)ptr); |
| 79 | } |
| 80 | |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 81 | #if IS_ENABLED(CONFIG_LP_CHROMEOS) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 82 | static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info) |
| 83 | { |
| 84 | struct lb_range *vbho = (struct lb_range *)ptr; |
| 85 | |
| 86 | info->vboot_handoff = (void *)(uintptr_t)vbho->range_start; |
| 87 | info->vboot_handoff_size = vbho->range_size; |
| 88 | } |
| 89 | |
| 90 | static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info) |
| 91 | { |
| 92 | struct lb_range *vbnv = (struct lb_range *)ptr; |
| 93 | |
| 94 | info->vbnv_start = vbnv->range_start; |
| 95 | info->vbnv_size = vbnv->range_size; |
| 96 | } |
| 97 | |
| 98 | static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info) |
| 99 | { |
| 100 | int i; |
| 101 | struct cb_gpios *gpios = (struct cb_gpios *)ptr; |
| 102 | |
| 103 | info->num_gpios = (gpios->count < SYSINFO_MAX_GPIOS) ? |
| 104 | (gpios->count) : SYSINFO_MAX_GPIOS; |
| 105 | |
| 106 | for (i = 0; i < info->num_gpios; i++) |
| 107 | info->gpios[i] = gpios->gpios[i]; |
| 108 | } |
| 109 | |
| 110 | static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info) |
| 111 | { |
| 112 | struct lb_range *vdat = (struct lb_range *) ptr; |
| 113 | |
| 114 | info->vdat_addr = phys_to_virt(vdat->range_start); |
| 115 | info->vdat_size = vdat->range_size; |
| 116 | } |
Vadim Bendebury | b7d7412 | 2014-09-22 19:36:28 -0700 | [diff] [blame] | 117 | |
| 118 | static void cb_parse_mac_addresses(unsigned char *ptr, |
| 119 | struct sysinfo_t *info) |
| 120 | { |
| 121 | struct cb_macs *macs = (struct cb_macs *)ptr; |
| 122 | int i; |
| 123 | |
| 124 | info->num_macs = (macs->count < ARRAY_SIZE(info->macs)) ? |
| 125 | macs->count : ARRAY_SIZE(info->macs); |
| 126 | |
| 127 | for (i = 0; i < info->num_macs; i++) |
| 128 | info->macs[i] = macs->mac_addrs[i]; |
| 129 | } |
| 130 | |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 131 | #endif |
| 132 | |
| 133 | static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info) |
| 134 | { |
| 135 | struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| 136 | info->tstamp_table = phys_to_virt(cbmem->cbmem_tab); |
| 137 | } |
| 138 | |
| 139 | static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info) |
| 140 | { |
| 141 | struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| 142 | info->cbmem_cons = phys_to_virt(cbmem->cbmem_tab); |
| 143 | } |
| 144 | |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 145 | static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info) |
| 146 | { |
| 147 | struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| 148 | info->acpi_gnvs = phys_to_virt(cbmem->cbmem_tab); |
| 149 | } |
| 150 | |
| 151 | static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info) |
| 152 | { |
| 153 | struct cb_board_id *const cbbid = (struct cb_board_id *)ptr; |
| 154 | info->board_id = cbbid->board_id; |
| 155 | } |
| 156 | |
David Hendricks | 272afe8 | 2014-11-20 13:59:45 -0800 | [diff] [blame] | 157 | static void cb_parse_ram_code(unsigned char *ptr, struct sysinfo_t *info) |
| 158 | { |
| 159 | struct cb_ram_code *const ram_code = (struct cb_ram_code *)ptr; |
| 160 | info->ram_code = ram_code->ram_code; |
| 161 | } |
| 162 | |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 163 | #if IS_ENABLED(CONFIG_LP_NVRAM) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 164 | static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info) |
| 165 | { |
| 166 | /* ptr points to a coreboot table entry and is already virtual */ |
| 167 | info->option_table = ptr; |
| 168 | } |
| 169 | |
| 170 | static void cb_parse_checksum(void *ptr, struct sysinfo_t *info) |
| 171 | { |
| 172 | struct cb_cmos_checksum *cmos_cksum = ptr; |
| 173 | info->cmos_range_start = cmos_cksum->range_start; |
| 174 | info->cmos_range_end = cmos_cksum->range_end; |
| 175 | info->cmos_checksum_location = cmos_cksum->location; |
| 176 | } |
| 177 | #endif |
| 178 | |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 179 | #if IS_ENABLED(CONFIG_LP_COREBOOT_VIDEO_CONSOLE) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 180 | static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info) |
| 181 | { |
| 182 | /* ptr points to a coreboot table entry and is already virtual */ |
| 183 | info->framebuffer = ptr; |
| 184 | } |
| 185 | #endif |
| 186 | |
| 187 | static void cb_parse_string(unsigned char *ptr, char **info) |
| 188 | { |
| 189 | *info = (char *)((struct cb_string *)ptr)->string; |
| 190 | } |
| 191 | |
Vadim Bendebury | 522f9c6 | 2014-10-24 15:14:55 -0700 | [diff] [blame] | 192 | static void cb_parse_wifi_calibration(void *ptr, struct sysinfo_t *info) |
| 193 | { |
| 194 | struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| 195 | info->wifi_calibration = phys_to_virt(cbmem->cbmem_tab); |
| 196 | } |
| 197 | |
Furquan Shaikh | 6b322cc | 2014-11-08 17:19:31 -0800 | [diff] [blame] | 198 | static void cb_parse_ramoops(void *ptr, struct sysinfo_t *info) |
| 199 | { |
| 200 | struct lb_range *ramoops = (struct lb_range *)ptr; |
| 201 | |
| 202 | info->ramoops_buffer = ramoops->range_start; |
| 203 | info->ramoops_buffer_size = ramoops->range_size; |
| 204 | } |
| 205 | |
Furquan Shaikh | 3cec871 | 2015-06-10 20:38:48 -0700 | [diff] [blame] | 206 | static void cb_parse_mtc(void *ptr, struct sysinfo_t *info) |
| 207 | { |
| 208 | struct lb_range *mtc = (struct lb_range *)ptr; |
| 209 | |
| 210 | info->mtc_start = mtc->range_start; |
| 211 | info->mtc_size = mtc->range_size; |
| 212 | } |
| 213 | |
Dan Ehrenberg | 6addd40 | 2015-01-08 10:29:19 -0800 | [diff] [blame] | 214 | static void cb_parse_spi_flash(void *ptr, struct sysinfo_t *info) |
| 215 | { |
| 216 | struct cb_spi_flash *flash = (struct cb_spi_flash *)ptr; |
| 217 | |
| 218 | info->spi_flash.size = flash->flash_size; |
| 219 | info->spi_flash.sector_size = flash->sector_size; |
| 220 | info->spi_flash.erase_cmd = flash->erase_cmd; |
| 221 | } |
| 222 | |
Patrick Georgi | f61b35d | 2015-07-14 17:15:24 +0100 | [diff] [blame] | 223 | static void cb_parse_boot_media_params(unsigned char *ptr, |
| 224 | struct sysinfo_t *info) |
| 225 | { |
| 226 | struct cb_boot_media_params *const bmp = |
| 227 | (struct cb_boot_media_params *)ptr; |
| 228 | info->fmap_offset = bmp->fmap_offset; |
| 229 | info->cbfs_offset = bmp->cbfs_offset; |
| 230 | info->cbfs_size = bmp->cbfs_size; |
| 231 | info->boot_media_size = bmp->boot_media_size; |
| 232 | } |
| 233 | |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 234 | int cb_parse_header(void *addr, int len, struct sysinfo_t *info) |
| 235 | { |
| 236 | struct cb_header *header; |
| 237 | unsigned char *ptr = addr; |
| 238 | void *forward; |
| 239 | int i; |
| 240 | |
| 241 | for (i = 0; i < len; i += 16, ptr += 16) { |
| 242 | header = (struct cb_header *)ptr; |
| 243 | if (!strncmp((const char *)header->signature, "LBIO", 4)) |
| 244 | break; |
| 245 | } |
| 246 | |
| 247 | /* We walked the entire space and didn't find anything. */ |
| 248 | if (i >= len) |
| 249 | return -1; |
| 250 | |
| 251 | /* Make sure the checksums match. */ |
| 252 | if (ipchksum((u16 *) header, sizeof(*header)) != 0) |
| 253 | return -1; |
| 254 | |
| 255 | if (!header->table_bytes) |
| 256 | return 0; |
| 257 | |
| 258 | if (ipchksum((u16 *) (ptr + sizeof(*header)), |
| 259 | header->table_bytes) != header->table_checksum) |
| 260 | return -1; |
| 261 | |
| 262 | info->header = header; |
| 263 | |
| 264 | /* |
David Hendricks | 272afe8 | 2014-11-20 13:59:45 -0800 | [diff] [blame] | 265 | * Board straps represented by numerical values are small numbers. |
| 266 | * Preset them to an invalid value in case the firmware does not |
| 267 | * supply the info. |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 268 | */ |
| 269 | info->board_id = ~0; |
David Hendricks | 272afe8 | 2014-11-20 13:59:45 -0800 | [diff] [blame] | 270 | info->ram_code = ~0; |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 271 | |
| 272 | /* Now, walk the tables. */ |
| 273 | ptr += header->header_bytes; |
| 274 | |
| 275 | for (i = 0; i < header->table_entries; i++) { |
| 276 | struct cb_record *rec = (struct cb_record *)ptr; |
| 277 | |
| 278 | /* We only care about a few tags here (maybe more later). */ |
| 279 | switch (rec->tag) { |
| 280 | case CB_TAG_FORWARD: |
| 281 | forward = phys_to_virt((void *)(unsigned long) |
| 282 | ((struct cb_forward *)rec)->forward); |
| 283 | return cb_parse_header(forward, len, info); |
| 284 | continue; |
| 285 | case CB_TAG_MEMORY: |
| 286 | cb_parse_memory(ptr, info); |
| 287 | break; |
| 288 | case CB_TAG_SERIAL: |
| 289 | cb_parse_serial(ptr, info); |
| 290 | break; |
| 291 | case CB_TAG_VERSION: |
| 292 | cb_parse_string(ptr, &info->cb_version); |
| 293 | break; |
| 294 | case CB_TAG_EXTRA_VERSION: |
| 295 | cb_parse_string(ptr, &info->extra_version); |
| 296 | break; |
| 297 | case CB_TAG_BUILD: |
| 298 | cb_parse_string(ptr, &info->build); |
| 299 | break; |
| 300 | case CB_TAG_COMPILE_TIME: |
| 301 | cb_parse_string(ptr, &info->compile_time); |
| 302 | break; |
| 303 | case CB_TAG_COMPILE_BY: |
| 304 | cb_parse_string(ptr, &info->compile_by); |
| 305 | break; |
| 306 | case CB_TAG_COMPILE_HOST: |
| 307 | cb_parse_string(ptr, &info->compile_host); |
| 308 | break; |
| 309 | case CB_TAG_COMPILE_DOMAIN: |
| 310 | cb_parse_string(ptr, &info->compile_domain); |
| 311 | break; |
| 312 | case CB_TAG_COMPILER: |
| 313 | cb_parse_string(ptr, &info->compiler); |
| 314 | break; |
| 315 | case CB_TAG_LINKER: |
| 316 | cb_parse_string(ptr, &info->linker); |
| 317 | break; |
| 318 | case CB_TAG_ASSEMBLER: |
| 319 | cb_parse_string(ptr, &info->assembler); |
| 320 | break; |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 321 | #if IS_ENABLED(CONFIG_LP_NVRAM) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 322 | case CB_TAG_CMOS_OPTION_TABLE: |
| 323 | cb_parse_optiontable(ptr, info); |
| 324 | break; |
| 325 | case CB_TAG_OPTION_CHECKSUM: |
| 326 | cb_parse_checksum(ptr, info); |
| 327 | break; |
| 328 | #endif |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 329 | #if IS_ENABLED(CONFIG_LP_COREBOOT_VIDEO_CONSOLE) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 330 | // FIXME we should warn on serial if coreboot set up a |
| 331 | // framebuffer buf the payload does not know about it. |
| 332 | case CB_TAG_FRAMEBUFFER: |
| 333 | cb_parse_framebuffer(ptr, info); |
| 334 | break; |
| 335 | #endif |
| 336 | case CB_TAG_MAINBOARD: |
| 337 | info->mainboard = (struct cb_mainboard *)ptr; |
| 338 | break; |
Stefan Reinauer | 1b4d394 | 2015-06-29 15:47:34 -0700 | [diff] [blame] | 339 | #if IS_ENABLED(CONFIG_LP_CHROMEOS) |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 340 | case CB_TAG_GPIO: |
| 341 | cb_parse_gpios(ptr, info); |
| 342 | break; |
| 343 | case CB_TAG_VDAT: |
| 344 | cb_parse_vdat(ptr, info); |
| 345 | break; |
| 346 | case CB_TAG_VBNV: |
| 347 | cb_parse_vbnv(ptr, info); |
| 348 | break; |
| 349 | case CB_TAG_VBOOT_HANDOFF: |
| 350 | cb_parse_vboot_handoff(ptr, info); |
| 351 | break; |
Vadim Bendebury | b7d7412 | 2014-09-22 19:36:28 -0700 | [diff] [blame] | 352 | case CB_TAG_MAC_ADDRS: |
| 353 | cb_parse_mac_addresses(ptr, info); |
| 354 | break; |
Stephen Barber | da262a63 | 2015-03-11 15:48:08 -0700 | [diff] [blame] | 355 | case CB_TAG_SERIALNO: |
| 356 | cb_parse_string(ptr, &info->serialno); |
| 357 | break; |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 358 | #endif |
| 359 | case CB_TAG_TIMESTAMPS: |
| 360 | cb_parse_tstamp(ptr, info); |
| 361 | break; |
| 362 | case CB_TAG_CBMEM_CONSOLE: |
| 363 | cb_parse_cbmem_cons(ptr, info); |
| 364 | break; |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 365 | case CB_TAG_ACPI_GNVS: |
| 366 | cb_parse_acpi_gnvs(ptr, info); |
| 367 | break; |
| 368 | case CB_TAG_BOARD_ID: |
| 369 | cb_parse_board_id(ptr, info); |
| 370 | break; |
David Hendricks | 272afe8 | 2014-11-20 13:59:45 -0800 | [diff] [blame] | 371 | case CB_TAG_RAM_CODE: |
| 372 | cb_parse_ram_code(ptr, info); |
| 373 | break; |
Vadim Bendebury | 522f9c6 | 2014-10-24 15:14:55 -0700 | [diff] [blame] | 374 | case CB_TAG_WIFI_CALIBRATION: |
| 375 | cb_parse_wifi_calibration(ptr, info); |
| 376 | break; |
Furquan Shaikh | 6b322cc | 2014-11-08 17:19:31 -0800 | [diff] [blame] | 377 | case CB_TAG_RAM_OOPS: |
| 378 | cb_parse_ramoops(ptr, info); |
| 379 | break; |
Dan Ehrenberg | 6addd40 | 2015-01-08 10:29:19 -0800 | [diff] [blame] | 380 | case CB_TAG_SPI_FLASH: |
| 381 | cb_parse_spi_flash(ptr, info); |
| 382 | break; |
Furquan Shaikh | 3cec871 | 2015-06-10 20:38:48 -0700 | [diff] [blame] | 383 | case CB_TAG_MTC: |
| 384 | cb_parse_mtc(ptr, info); |
| 385 | break; |
Patrick Georgi | f61b35d | 2015-07-14 17:15:24 +0100 | [diff] [blame] | 386 | case CB_TAG_BOOT_MEDIA_PARAMS: |
| 387 | cb_parse_boot_media_params(ptr, info); |
| 388 | break; |
Vadim Bendebury | 864ec8c | 2014-07-31 21:02:57 -0700 | [diff] [blame] | 389 | default: |
| 390 | cb_parse_arch_specific(rec, info); |
| 391 | break; |
| 392 | } |
| 393 | |
| 394 | ptr += rec->size; |
| 395 | } |
| 396 | |
| 397 | return 0; |
| 398 | } |