/* * * 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 <commonlib/bsd/cbmem_id.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 CONFIG(LP_MEMMAP_RAM_ONLY) if (range->type != CB_MEM_RAM) continue; #endif info->memrange[info->n_memranges].base = range->start; info->memrange[info->n_memranges].size = 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->cb_serial = virt_to_phys(ptr); } 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_mmc_info(unsigned char *ptr, struct sysinfo_t *info) { struct cb_mmc_info *mmc_info = (struct cb_mmc_info *)ptr; info->mmc_early_wake_status = mmc_info->early_cmd1_status; } 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_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_board_config(unsigned char *ptr, struct sysinfo_t *info) { struct cb_board_config *const config = (struct cb_board_config *)ptr; info->fw_config = config->fw_config; info->board_id = config->board_id; info->ram_code = config->ram_code; info->sku_id = config->sku_id; } #if CONFIG(LP_NVRAM) static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info) { /* ptr is already virtual, but we want to keep physical addresses */ info->cmos_option_table = virt_to_phys(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 CONFIG(LP_COREBOOT_VIDEO_CONSOLE) static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info) { info->framebuffer = *(struct cb_framebuffer *)ptr; } #endif static void cb_parse_string(const void *const ptr, uintptr_t *const info) { /* ptr is already virtual (str->string just an offset to that), but we want to keep physical addresses */ const struct cb_string *const str = ptr; *info = virt_to_phys(str->string); } 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; if (flash->mmap_count == 0) return; info->spi_flash.mmap_window_count = MIN(flash->mmap_count, SYSINFO_MAX_MMAP_WINDOWS); memcpy(info->spi_flash.mmap_table, flash->mmap_table, info->spi_flash.mmap_window_count * sizeof(struct flash_mmap_window)); } 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; } #if 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 static void cb_parse_cbmem_entry(void *ptr, struct sysinfo_t *info) { const struct cb_cbmem_entry *cbmem_entry = ptr; if (cbmem_entry->size != sizeof(*cbmem_entry)) return; switch (cbmem_entry->id) { case CBMEM_ID_ACPI_CNVS: info->acpi_cnvs = cbmem_entry->address; break; case CBMEM_ID_ACPI_GNVS: info->acpi_gnvs = cbmem_entry->address; break; case CBMEM_ID_SMBIOS: info->smbios = cbmem_entry->address; break; case CBMEM_ID_CBFS_RO_MCACHE: info->cbfs_ro_mcache_offset = cbmem_entry->address; info->cbfs_ro_mcache_size = cbmem_entry->entry_size; break; case CBMEM_ID_CBFS_RW_MCACHE: info->cbfs_rw_mcache_offset = cbmem_entry->address; info->cbfs_rw_mcache_size = cbmem_entry->entry_size; break; case CBMEM_ID_CONSOLE: info->cbmem_cons = cbmem_entry->address; break; case CBMEM_ID_MRCDATA: info->mrc_cache = cbmem_entry->address; break; case CBMEM_ID_VBOOT_WORKBUF: info->vboot_workbuf = cbmem_entry->address; break; case CBMEM_ID_TIMESTAMP: info->tstamp_table = cbmem_entry->address; break; case CBMEM_ID_VPD: info->chromeos_vpd = cbmem_entry->address; break; case CBMEM_ID_FMAP: info->fmap_cache = cbmem_entry->address; break; case CBMEM_ID_WIFI_CALIBRATION: info->wifi_calibration = cbmem_entry->address; break; case CBMEM_ID_TYPE_C_INFO: info->type_c_info = cbmem_entry->address; break; case CBMEM_ID_MEM_CHIP_INFO: info->mem_chip_base = cbmem_entry->address; break; case CBMEM_ID_CSE_BP_INFO: info->cse_bp_info = cbmem_entry->address; break; case CBMEM_ID_CSE_INFO: info->cse_info = cbmem_entry->address; break; default: break; } } static void cb_parse_pcie(void *ptr, struct sysinfo_t *info) { const struct cb_pcie *pcie = ptr; info->pcie_ctrl_base = pcie->ctrl_base; } static void cb_parse_rsdp(void *ptr, struct sysinfo_t *info) { const struct cb_acpi_rsdp *cb_acpi_rsdp = ptr; info->acpi_rsdp = cb_acpi_rsdp->rsdp_pointer; } 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->cb_header = virt_to_phys(header); /* Initialize IDs as undefined in case they don't show up in table. */ info->board_id = UNDEFINED_STRAPPING_ID; info->ram_code = UNDEFINED_STRAPPING_ID; info->sku_id = UNDEFINED_STRAPPING_ID; info->fw_config = UNDEFINED_FW_CONFIG; /* 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 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 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->cb_mainboard = virt_to_phys(ptr); break; case CB_TAG_GPIO: cb_parse_gpios(ptr, info); break; case CB_TAG_VBNV: cb_parse_vbnv(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_BOARD_CONFIG: cb_parse_board_config(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_MMC_INFO: cb_parse_mmc_info(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; case CB_TAG_CBMEM_ENTRY: cb_parse_cbmem_entry(ptr, info); break; #if CONFIG(LP_TIMER_RDTSC) case CB_TAG_TSC_INFO: cb_parse_tsc_info(ptr, info); break; #endif case CB_TAG_ACPI_RSDP: cb_parse_rsdp(ptr, info); break; case CB_TAG_PCIE: cb_parse_pcie(ptr, info); break; default: cb_parse_arch_specific(rec, info); break; } ptr += rec->size; } return 0; }