| /* |
| * This file is part of the libpayload project. |
| * |
| * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| * Copyright (C) 2009 coresystems GmbH |
| * |
| * 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. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE. |
| */ |
| |
| #include <libpayload-config.h> |
| #include <libpayload.h> |
| #include <coreboot_tables.h> |
| #include <stdint.h> |
| |
| /* |
| * The code in this file applies to all coreboot architectures. Some coreboot |
| * table tags are architecture specific, they are handled by their respective |
| * cb_parse_arch_specific() functions. |
| */ |
| |
| /* === Parsing code === */ |
| /* This is the generic parsing code. */ |
| |
| static void cb_parse_memory(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_memory *mem = ptr; |
| int count = MEM_RANGE_COUNT(mem); |
| int i; |
| |
| if (count > SYSINFO_MAX_MEM_RANGES) |
| count = SYSINFO_MAX_MEM_RANGES; |
| |
| info->n_memranges = 0; |
| |
| for (i = 0; i < count; i++) { |
| struct cb_memory_range *range = MEM_RANGE_PTR(mem, i); |
| |
| #if IS_ENABLED(CONFIG_LP_MEMMAP_RAM_ONLY) |
| if (range->type != CB_MEM_RAM) |
| continue; |
| #endif |
| |
| info->memrange[info->n_memranges].base = |
| cb_unpack64(range->start); |
| |
| info->memrange[info->n_memranges].size = |
| cb_unpack64(range->size); |
| |
| info->memrange[info->n_memranges].type = range->type; |
| |
| info->n_memranges++; |
| } |
| } |
| |
| static void cb_parse_serial(void *ptr, struct sysinfo_t *info) |
| { |
| info->serial = ((struct cb_serial *)ptr); |
| } |
| |
| static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *vbho = (struct lb_range *)ptr; |
| |
| info->vboot_handoff = (void *)(uintptr_t)vbho->range_start; |
| info->vboot_handoff_size = vbho->range_size; |
| } |
| |
| static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *vbnv = (struct lb_range *)ptr; |
| |
| info->vbnv_start = vbnv->range_start; |
| info->vbnv_size = vbnv->range_size; |
| } |
| |
| static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| int i; |
| struct cb_gpios *gpios = (struct cb_gpios *)ptr; |
| |
| info->num_gpios = (gpios->count < SYSINFO_MAX_GPIOS) ? |
| (gpios->count) : SYSINFO_MAX_GPIOS; |
| |
| for (i = 0; i < info->num_gpios; i++) |
| info->gpios[i] = gpios->gpios[i]; |
| } |
| |
| static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *vdat = (struct lb_range *) ptr; |
| |
| info->vdat_addr = phys_to_virt(vdat->range_start); |
| info->vdat_size = vdat->range_size; |
| } |
| |
| static void cb_parse_mac_addresses(unsigned char *ptr, |
| struct sysinfo_t *info) |
| { |
| struct cb_macs *macs = (struct cb_macs *)ptr; |
| int i; |
| |
| info->num_macs = (macs->count < ARRAY_SIZE(info->macs)) ? |
| macs->count : ARRAY_SIZE(info->macs); |
| |
| for (i = 0; i < info->num_macs; i++) |
| info->macs[i] = macs->mac_addrs[i]; |
| } |
| |
| static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->tstamp_table = phys_to_virt(cbmem->cbmem_tab); |
| } |
| |
| static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->cbmem_cons = phys_to_virt(cbmem->cbmem_tab); |
| } |
| |
| static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->acpi_gnvs = phys_to_virt(cbmem->cbmem_tab); |
| } |
| |
| static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_board_id *const cbbid = (struct cb_board_id *)ptr; |
| info->board_id = cbbid->board_id; |
| } |
| |
| static void cb_parse_ram_code(unsigned char *ptr, struct sysinfo_t *info) |
| { |
| struct cb_ram_code *const ram_code = (struct cb_ram_code *)ptr; |
| info->ram_code = ram_code->ram_code; |
| } |
| |
| #if IS_ENABLED(CONFIG_LP_NVRAM) |
| static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info) |
| { |
| /* ptr points to a coreboot table entry and is already virtual */ |
| info->option_table = ptr; |
| } |
| |
| static void cb_parse_checksum(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cmos_checksum *cmos_cksum = ptr; |
| info->cmos_range_start = cmos_cksum->range_start; |
| info->cmos_range_end = cmos_cksum->range_end; |
| info->cmos_checksum_location = cmos_cksum->location; |
| } |
| #endif |
| |
| #if IS_ENABLED(CONFIG_LP_COREBOOT_VIDEO_CONSOLE) |
| static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info) |
| { |
| /* ptr points to a coreboot table entry and is already virtual */ |
| info->framebuffer = ptr; |
| } |
| #endif |
| |
| static void cb_parse_string(unsigned char *ptr, char **info) |
| { |
| *info = (char *)((struct cb_string *)ptr)->string; |
| } |
| |
| static void cb_parse_wifi_calibration(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->wifi_calibration = phys_to_virt(cbmem->cbmem_tab); |
| } |
| |
| static void cb_parse_ramoops(void *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *ramoops = (struct lb_range *)ptr; |
| |
| info->ramoops_buffer = ramoops->range_start; |
| info->ramoops_buffer_size = ramoops->range_size; |
| } |
| |
| static void cb_parse_mtc(void *ptr, struct sysinfo_t *info) |
| { |
| struct lb_range *mtc = (struct lb_range *)ptr; |
| |
| info->mtc_start = mtc->range_start; |
| info->mtc_size = mtc->range_size; |
| } |
| |
| static void cb_parse_spi_flash(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_spi_flash *flash = (struct cb_spi_flash *)ptr; |
| |
| info->spi_flash.size = flash->flash_size; |
| info->spi_flash.sector_size = flash->sector_size; |
| info->spi_flash.erase_cmd = flash->erase_cmd; |
| } |
| |
| static void cb_parse_boot_media_params(unsigned char *ptr, |
| struct sysinfo_t *info) |
| { |
| struct cb_boot_media_params *const bmp = |
| (struct cb_boot_media_params *)ptr; |
| info->fmap_offset = bmp->fmap_offset; |
| info->cbfs_offset = bmp->cbfs_offset; |
| info->cbfs_size = bmp->cbfs_size; |
| info->boot_media_size = bmp->boot_media_size; |
| } |
| |
| static void cb_parse_vpd(void *ptr, struct sysinfo_t *info) |
| { |
| struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr; |
| info->chromeos_vpd = phys_to_virt(cbmem->cbmem_tab); |
| } |
| |
| #if IS_ENABLED(CONFIG_LP_TIMER_RDTSC) |
| static void cb_parse_tsc_info(void *ptr, struct sysinfo_t *info) |
| { |
| const struct cb_tsc_info *tsc_info = ptr; |
| |
| if (tsc_info->freq_khz == 0) |
| return; |
| |
| /* Honor the TSC frequency passed to the payload. */ |
| info->cpu_khz = tsc_info->freq_khz; |
| } |
| #endif |
| |
| int cb_parse_header(void *addr, int len, struct sysinfo_t *info) |
| { |
| struct cb_header *header; |
| unsigned char *ptr = addr; |
| void *forward; |
| int i; |
| |
| for (i = 0; i < len; i += 16, ptr += 16) { |
| header = (struct cb_header *)ptr; |
| if (!strncmp((const char *)header->signature, "LBIO", 4)) |
| break; |
| } |
| |
| /* We walked the entire space and didn't find anything. */ |
| if (i >= len) |
| return -1; |
| |
| /* Make sure the checksums match. */ |
| if (ipchksum((u16 *) header, sizeof(*header)) != 0) |
| return -1; |
| |
| if (!header->table_bytes) |
| return 0; |
| |
| if (ipchksum((u16 *) (ptr + sizeof(*header)), |
| header->table_bytes) != header->table_checksum) |
| return -1; |
| |
| info->header = header; |
| |
| /* |
| * Board straps represented by numerical values are small numbers. |
| * Preset them to an invalid value in case the firmware does not |
| * supply the info. |
| */ |
| info->board_id = ~0; |
| info->ram_code = ~0; |
| |
| /* Now, walk the tables. */ |
| ptr += header->header_bytes; |
| |
| for (i = 0; i < header->table_entries; i++) { |
| struct cb_record *rec = (struct cb_record *)ptr; |
| |
| /* We only care about a few tags here (maybe more later). */ |
| switch (rec->tag) { |
| case CB_TAG_FORWARD: |
| forward = phys_to_virt((void *)(unsigned long) |
| ((struct cb_forward *)rec)->forward); |
| return cb_parse_header(forward, len, info); |
| case CB_TAG_MEMORY: |
| cb_parse_memory(ptr, info); |
| break; |
| case CB_TAG_SERIAL: |
| cb_parse_serial(ptr, info); |
| break; |
| case CB_TAG_VERSION: |
| cb_parse_string(ptr, &info->cb_version); |
| break; |
| case CB_TAG_EXTRA_VERSION: |
| cb_parse_string(ptr, &info->extra_version); |
| break; |
| case CB_TAG_BUILD: |
| cb_parse_string(ptr, &info->build); |
| break; |
| case CB_TAG_COMPILE_TIME: |
| cb_parse_string(ptr, &info->compile_time); |
| break; |
| case CB_TAG_COMPILE_BY: |
| cb_parse_string(ptr, &info->compile_by); |
| break; |
| case CB_TAG_COMPILE_HOST: |
| cb_parse_string(ptr, &info->compile_host); |
| break; |
| case CB_TAG_COMPILE_DOMAIN: |
| cb_parse_string(ptr, &info->compile_domain); |
| break; |
| case CB_TAG_COMPILER: |
| cb_parse_string(ptr, &info->compiler); |
| break; |
| case CB_TAG_LINKER: |
| cb_parse_string(ptr, &info->linker); |
| break; |
| case CB_TAG_ASSEMBLER: |
| cb_parse_string(ptr, &info->assembler); |
| break; |
| #if IS_ENABLED(CONFIG_LP_NVRAM) |
| case CB_TAG_CMOS_OPTION_TABLE: |
| cb_parse_optiontable(ptr, info); |
| break; |
| case CB_TAG_OPTION_CHECKSUM: |
| cb_parse_checksum(ptr, info); |
| break; |
| #endif |
| #if IS_ENABLED(CONFIG_LP_COREBOOT_VIDEO_CONSOLE) |
| // FIXME we should warn on serial if coreboot set up a |
| // framebuffer buf the payload does not know about it. |
| case CB_TAG_FRAMEBUFFER: |
| cb_parse_framebuffer(ptr, info); |
| break; |
| #endif |
| case CB_TAG_MAINBOARD: |
| info->mainboard = (struct cb_mainboard *)ptr; |
| break; |
| case CB_TAG_GPIO: |
| cb_parse_gpios(ptr, info); |
| break; |
| case CB_TAG_VDAT: |
| cb_parse_vdat(ptr, info); |
| break; |
| case CB_TAG_VBNV: |
| cb_parse_vbnv(ptr, info); |
| break; |
| case CB_TAG_VBOOT_HANDOFF: |
| cb_parse_vboot_handoff(ptr, info); |
| break; |
| case CB_TAG_MAC_ADDRS: |
| cb_parse_mac_addresses(ptr, info); |
| break; |
| case CB_TAG_SERIALNO: |
| cb_parse_string(ptr, &info->serialno); |
| break; |
| case CB_TAG_TIMESTAMPS: |
| cb_parse_tstamp(ptr, info); |
| break; |
| case CB_TAG_CBMEM_CONSOLE: |
| cb_parse_cbmem_cons(ptr, info); |
| break; |
| case CB_TAG_ACPI_GNVS: |
| cb_parse_acpi_gnvs(ptr, info); |
| break; |
| case CB_TAG_BOARD_ID: |
| cb_parse_board_id(ptr, info); |
| break; |
| case CB_TAG_RAM_CODE: |
| cb_parse_ram_code(ptr, info); |
| break; |
| case CB_TAG_WIFI_CALIBRATION: |
| cb_parse_wifi_calibration(ptr, info); |
| break; |
| case CB_TAG_RAM_OOPS: |
| cb_parse_ramoops(ptr, info); |
| break; |
| case CB_TAG_SPI_FLASH: |
| cb_parse_spi_flash(ptr, info); |
| break; |
| case CB_TAG_MTC: |
| cb_parse_mtc(ptr, info); |
| break; |
| case CB_TAG_BOOT_MEDIA_PARAMS: |
| cb_parse_boot_media_params(ptr, info); |
| break; |
| #if IS_ENABLED(CONFIG_LP_TIMER_RDTSC) |
| case CB_TAG_TSC_INFO: |
| cb_parse_tsc_info(ptr, info); |
| break; |
| #endif |
| case CB_TAG_VPD: |
| cb_parse_vpd(ptr, info); |
| break; |
| default: |
| cb_parse_arch_specific(rec, info); |
| break; |
| } |
| |
| ptr += rec->size; |
| } |
| |
| return 0; |
| } |