/* SPDX-License-Identifier: GPL-2.0-only */ #include <acpi/acpi.h> #include <arch/cbconfig.h> #include <commonlib/bsd/ipchksum.h> #include <console/console.h> #include <console/uart.h> #include <identity.h> #include <boot/coreboot_tables.h> #include <boot/tables.h> #include <boot_device.h> #include <string.h> #include <boardid.h> #include <device/device.h> #include <drivers/tpm/tpm_ppi.h> #include <fmap.h> #include <fw_config.h> #include <cbfs.h> #include <cbmem.h> #include <bootmem.h> #include <bootsplash.h> #include <inttypes.h> #include <spi_flash.h> #include <smmstore.h> #include <types.h> #include <version.h> #if CONFIG(USE_OPTION_TABLE) #include <option_table.h> #endif #if CONFIG(PLATFORM_USES_FSP2_0) #include <fsp/util.h> #else void lb_string_platform_blob_version(struct lb_header *header); #endif __weak enum cb_err fill_lb_pcie(struct lb_pcie *pcie) { return CB_ERR_NOT_IMPLEMENTED; } static struct lb_header *lb_table_init(unsigned long addr) { struct lb_header *header; addr = ALIGN_UP(addr, 16); header = (void *)addr; header->signature[0] = 'L'; header->signature[1] = 'B'; header->signature[2] = 'I'; header->signature[3] = 'O'; header->header_bytes = sizeof(*header); header->header_checksum = 0; header->table_bytes = 0; header->table_checksum = 0; header->table_entries = 0; return header; } static struct lb_record *lb_first_record(struct lb_header *header) { struct lb_record *rec; rec = (void *)(((char *)header) + sizeof(*header)); return rec; } static struct lb_record *lb_last_record(struct lb_header *header) { struct lb_record *rec; rec = (void *)(((char *)header) + sizeof(*header) + header->table_bytes); return rec; } struct lb_record *lb_new_record(struct lb_header *header) { struct lb_record *rec; rec = lb_last_record(header); if (header->table_entries) { assert(IS_ALIGNED(rec->size, LB_ENTRY_ALIGN)); header->table_bytes += rec->size; rec = lb_last_record(header); } header->table_entries++; rec->tag = LB_TAG_UNUSED; rec->size = sizeof(*rec); return rec; } static struct lb_memory *lb_memory(struct lb_header *header) { struct lb_record *rec; struct lb_memory *mem; rec = lb_new_record(header); mem = (struct lb_memory *)rec; mem->tag = LB_TAG_MEMORY; mem->size = sizeof(*mem); return mem; } static void lb_add_serial(struct lb_header *header) { struct lb_serial new_serial = { .tag = LB_TAG_SERIAL, .size = sizeof(struct lb_serial), }; if (fill_lb_serial(&new_serial) != CB_SUCCESS) return; struct lb_serial *serial = (struct lb_serial *)lb_new_record(header); memcpy(serial, &new_serial, sizeof(*serial)); assert(serial->type == LB_SERIAL_TYPE_IO_MAPPED || serial->type == LB_SERIAL_TYPE_MEMORY_MAPPED) if (serial->type == LB_SERIAL_TYPE_IO_MAPPED) lb_add_console(LB_TAG_CONSOLE_SERIAL8250, header); else lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, header); } void lb_add_console(uint16_t consoletype, void *data) { struct lb_header *header = (struct lb_header *)data; struct lb_console *console; console = (struct lb_console *)lb_new_record(header); console->tag = LB_TAG_CONSOLE; console->size = sizeof(*console); console->type = consoletype; } static void lb_pcie(struct lb_header *header) { struct lb_pcie pcie = { .tag = LB_TAG_PCIE, .size = sizeof(pcie) }; if (fill_lb_pcie(&pcie) != CB_SUCCESS) return; memcpy(lb_new_record(header), &pcie, sizeof(pcie)); } static void lb_framebuffer(struct lb_header *header) { struct lb_framebuffer *framebuffer; struct lb_framebuffer fb = {0}; if (!CONFIG(LINEAR_FRAMEBUFFER) || fill_lb_framebuffer(&fb)) return; framebuffer = (struct lb_framebuffer *)lb_new_record(header); memcpy(framebuffer, &fb, sizeof(*framebuffer)); framebuffer->tag = LB_TAG_FRAMEBUFFER; framebuffer->size = sizeof(*framebuffer); if (CONFIG(BOOTSPLASH)) { uint8_t *fb_ptr = (uint8_t *)(uintptr_t)framebuffer->physical_address; unsigned int width = framebuffer->x_resolution; unsigned int height = framebuffer->y_resolution; unsigned int bytes_per_line = framebuffer->bytes_per_line; unsigned int depth = framebuffer->bits_per_pixel; set_bootsplash(fb_ptr, width, height, bytes_per_line, depth); } } void lb_add_gpios(struct lb_gpios *gpios, const struct lb_gpio *gpio_table, size_t count) { size_t table_size = count * sizeof(struct lb_gpio); memcpy(&gpios->gpios[gpios->count], gpio_table, table_size); gpios->count += count; gpios->size += table_size; } static void lb_gpios(struct lb_header *header) { struct lb_gpios *gpios; struct lb_gpio *g; gpios = (struct lb_gpios *)lb_new_record(header); gpios->tag = LB_TAG_GPIO; gpios->size = sizeof(*gpios); gpios->count = 0; fill_lb_gpios(gpios); printk(BIOS_INFO, "Passing %u GPIOs to payload:\n" " NAME | PORT | POLARITY | VALUE\n", gpios->count); for (g = &gpios->gpios[0]; g < &gpios->gpios[gpios->count]; g++) { printk(BIOS_INFO, "%16.16s | ", g->name); if (g->port == -1) printk(BIOS_INFO, " undefined | "); else printk(BIOS_INFO, "%#.8x | ", g->port); if (g->polarity == ACTIVE_HIGH) printk(BIOS_INFO, " high | "); else printk(BIOS_INFO, " low | "); switch (g->value) { case 0: printk(BIOS_INFO, " low\n"); break; case 1: printk(BIOS_INFO, " high\n"); break; default: printk(BIOS_INFO, "undefined\n"); break; } } } __weak uint32_t board_id(void) { return UNDEFINED_STRAPPING_ID; } __weak uint32_t ram_code(void) { return UNDEFINED_STRAPPING_ID; } __weak uint32_t sku_id(void) { return UNDEFINED_STRAPPING_ID; } __weak uint64_t fw_config_get(void) { return UNDEFINED_FW_CONFIG; } static void lb_boot_media_params(struct lb_header *header) { struct lb_boot_media_params *bmp; const struct region_device *boot_dev; const struct cbfs_boot_device *cbd = cbfs_get_boot_device(false); if (!cbd) return; boot_dev = boot_device_ro(); if (boot_dev == NULL) return; bmp = (struct lb_boot_media_params *)lb_new_record(header); bmp->tag = LB_TAG_BOOT_MEDIA_PARAMS; bmp->size = sizeof(*bmp); bmp->cbfs_offset = region_device_offset(&cbd->rdev); bmp->cbfs_size = region_device_sz(&cbd->rdev); bmp->boot_media_size = region_device_sz(boot_dev); bmp->fmap_offset = get_fmap_flash_offset(); } static void lb_mmc_info(struct lb_header *header) { struct lb_mmc_info *rec; int32_t *ms_cbmem; ms_cbmem = cbmem_find(CBMEM_ID_MMC_STATUS); if (!ms_cbmem) return; rec = (struct lb_mmc_info *)lb_new_record(header); rec->tag = LB_TAG_MMC_INFO; rec->size = sizeof(*rec); rec->early_cmd1_status = *ms_cbmem; } static void add_cbmem_pointers(struct lb_header *header) { /* * These CBMEM sections' addresses are included in the coreboot table * with the appropriate tags. */ const struct section_id { int cbmem_id; int table_tag; } section_ids[] = { {CBMEM_ID_TIMESTAMP, LB_TAG_TIMESTAMPS}, {CBMEM_ID_CONSOLE, LB_TAG_CBMEM_CONSOLE}, {CBMEM_ID_ACPI_GNVS, LB_TAG_ACPI_GNVS}, {CBMEM_ID_ACPI_CNVS, LB_TAG_ACPI_CNVS}, {CBMEM_ID_VPD, LB_TAG_VPD}, {CBMEM_ID_WIFI_CALIBRATION, LB_TAG_WIFI_CALIBRATION}, {CBMEM_ID_TPM_CB_LOG, LB_TAG_TPM_CB_LOG}, {CBMEM_ID_FMAP, LB_TAG_FMAP}, {CBMEM_ID_VBOOT_WORKBUF, LB_TAG_VBOOT_WORKBUF}, {CBMEM_ID_TYPE_C_INFO, LB_TAG_TYPE_C_INFO}, }; int i; for (i = 0; i < ARRAY_SIZE(section_ids); i++) { const struct section_id *sid = section_ids + i; struct lb_cbmem_ref *cbmem_ref; void *cbmem_addr = cbmem_find(sid->cbmem_id); if (!cbmem_addr) continue; /* This section is not present */ cbmem_ref = (struct lb_cbmem_ref *)lb_new_record(header); if (!cbmem_ref) { printk(BIOS_ERR, "No more room in coreboot table!\n"); break; } cbmem_ref->tag = sid->table_tag; cbmem_ref->size = sizeof(*cbmem_ref); cbmem_ref->cbmem_addr = (unsigned long)cbmem_addr; } } static struct lb_mainboard *lb_mainboard(struct lb_header *header) { struct lb_record *rec; struct lb_mainboard *mainboard; rec = lb_new_record(header); mainboard = (struct lb_mainboard *)rec; mainboard->tag = LB_TAG_MAINBOARD; mainboard->size = ALIGN_UP(sizeof(*mainboard) + strlen(mainboard_vendor) + 1 + strlen(mainboard_part_number) + 1, LB_ENTRY_ALIGN); mainboard->vendor_idx = 0; mainboard->part_number_idx = strlen(mainboard_vendor) + 1; memcpy(mainboard->strings + mainboard->vendor_idx, mainboard_vendor, strlen(mainboard_vendor) + 1); memcpy(mainboard->strings + mainboard->part_number_idx, mainboard_part_number, strlen(mainboard_part_number) + 1); return mainboard; } static struct lb_board_config *lb_board_config(struct lb_header *header) { struct lb_record *rec; struct lb_board_config *config; rec = lb_new_record(header); config = (struct lb_board_config *)rec; config->tag = LB_TAG_BOARD_CONFIG; config->size = sizeof(*config); const uint64_t fw_config = fw_config_get(); config->board_id = board_id(); config->ram_code = ram_code(); config->sku_id = sku_id(); config->fw_config = fw_config; if (config->board_id != UNDEFINED_STRAPPING_ID) printk(BIOS_INFO, "Board ID: %d\n", config->board_id); if (config->ram_code != UNDEFINED_STRAPPING_ID) printk(BIOS_INFO, "RAM code: %d\n", config->ram_code); if (config->sku_id != UNDEFINED_STRAPPING_ID) printk(BIOS_INFO, "SKU ID: %d\n", config->sku_id); if (fw_config != UNDEFINED_FW_CONFIG) printk(BIOS_INFO, "FW config: %#" PRIx64 "\n", fw_config); return config; } #if CONFIG(USE_OPTION_TABLE) static struct cmos_checksum *lb_cmos_checksum(struct lb_header *header) { struct lb_record *rec; struct cmos_checksum *cmos_checksum; rec = lb_new_record(header); cmos_checksum = (struct cmos_checksum *)rec; cmos_checksum->tag = LB_TAG_OPTION_CHECKSUM; cmos_checksum->size = (sizeof(*cmos_checksum)); cmos_checksum->range_start = LB_CKS_RANGE_START * 8; cmos_checksum->range_end = (LB_CKS_RANGE_END * 8) + 7; cmos_checksum->location = LB_CKS_LOC * 8; cmos_checksum->type = CHECKSUM_PCBIOS; return cmos_checksum; } #endif static void lb_strings(struct lb_header *header) { static const struct { uint32_t tag; const char *string; } strings[] = { { LB_TAG_VERSION, coreboot_version, }, { LB_TAG_EXTRA_VERSION, coreboot_extra_version, }, { LB_TAG_BUILD, coreboot_build, }, { LB_TAG_COMPILE_TIME, coreboot_compile_time, }, }; unsigned int i; for (i = 0; i < ARRAY_SIZE(strings); i++) { struct lb_string *rec; size_t len; rec = (struct lb_string *)lb_new_record(header); len = strlen(strings[i].string); rec->tag = strings[i].tag; rec->size = ALIGN_UP(sizeof(*rec) + len + 1, LB_ENTRY_ALIGN); memcpy(rec->string, strings[i].string, len+1); } } static void lb_record_version_timestamp(struct lb_header *header) { struct lb_timestamp *rec; rec = (struct lb_timestamp *)lb_new_record(header); rec->tag = LB_TAG_VERSION_TIMESTAMP; rec->size = sizeof(*rec); rec->timestamp = coreboot_version_timestamp; } void __weak lb_board(struct lb_header *header) { /* NOOP */ } /* * It's possible that the system is using a SPI flash as the boot device, * however it is not probing for devices to fill in specifics. In that * case don't provide any information as the correct information is * not known. */ void __weak lb_spi_flash(struct lb_header *header) { /* NOOP */ } static struct lb_forward *lb_forward(struct lb_header *header, struct lb_header *next_header) { struct lb_record *rec; struct lb_forward *forward; rec = lb_new_record(header); forward = (struct lb_forward *)rec; forward->tag = LB_TAG_FORWARD; forward->size = sizeof(*forward); forward->forward = (uint64_t)(unsigned long)next_header; return forward; } static unsigned long lb_table_fini(struct lb_header *head) { struct lb_record *rec, *first_rec; rec = lb_last_record(head); if (head->table_entries) { assert(IS_ALIGNED(rec->size, LB_ENTRY_ALIGN)); head->table_bytes += rec->size; } first_rec = lb_first_record(head); head->table_checksum = ipchksum(first_rec, head->table_bytes); head->header_checksum = 0; head->header_checksum = ipchksum(head, sizeof(*head)); printk(BIOS_DEBUG, "Wrote coreboot table at: %p, 0x%x bytes, checksum %x\n", head, head->table_bytes, head->table_checksum); return (unsigned long)rec + rec->size; } static void lb_add_acpi_rsdp(struct lb_header *head) { struct lb_acpi_rsdp *acpi_rsdp; struct lb_record *rec = lb_new_record(head); acpi_rsdp = (struct lb_acpi_rsdp *)rec; acpi_rsdp->tag = LB_TAG_ACPI_RSDP; acpi_rsdp->size = sizeof(*acpi_rsdp); acpi_rsdp->rsdp_pointer = get_coreboot_rsdp(); } size_t write_coreboot_forwarding_table(uintptr_t entry, uintptr_t target) { struct lb_header *head; printk(BIOS_DEBUG, "Writing table forward entry at %p\n", (void *)entry); head = lb_table_init(entry); lb_forward(head, (struct lb_header *)target); return (uintptr_t)lb_table_fini(head) - entry; } static uintptr_t write_coreboot_table(uintptr_t rom_table_end) { struct lb_header *head; printk(BIOS_DEBUG, "Writing coreboot table at 0x%08lx\n", (long)rom_table_end); head = lb_table_init(rom_table_end); #if CONFIG(USE_OPTION_TABLE) { struct cmos_option_table *option_table = cbfs_map("cmos_layout.bin", NULL); if (option_table) { struct lb_record *rec_dest = lb_new_record(head); /* Copy the option config table, it's already a * lb_record... */ memcpy(rec_dest, option_table, option_table->size); /* Create CMOS checksum entry in coreboot table */ lb_cmos_checksum(head); } else { printk(BIOS_ERR, "cmos_layout.bin could not be found!\n"); } } #endif /* Serialize resource map into mem table types (LB_MEM_*) */ bootmem_write_memory_table(lb_memory(head)); /* Record our motherboard */ lb_mainboard(head); /* Record the serial ports and consoles */ if (CONFIG(CONSOLE_SERIAL)) lb_add_serial(head); if (CONFIG(CONSOLE_USB)) lb_add_console(LB_TAG_CONSOLE_EHCI, head); if (CONFIG(PCI)) lb_pcie(head); /* Record our various random string information */ lb_strings(head); if (CONFIG(PLATFORM_USES_FSP2_0)) lb_string_platform_blob_version(head); lb_record_version_timestamp(head); /* Record our framebuffer */ lb_framebuffer(head); /* Record our GPIO settings (ChromeOS specific) */ if (CONFIG(CHROMEOS)) lb_gpios(head); /* pass along VBNV offsets in CMOS */ if (CONFIG(VBOOT_VBNV_CMOS)) lb_table_add_vbnv_cmos(head); /* Pass mmc early init status */ lb_mmc_info(head); /* Add SPI flash description if available */ if (CONFIG(BOOT_DEVICE_SPI_FLASH)) lb_spi_flash(head); add_cbmem_pointers(head); /* SMMSTORE v2 */ if (CONFIG(SMMSTORE_V2)) lb_smmstorev2(head); /* Add board-specific table entries, if any. */ lb_board(head); if (CONFIG(CHROMEOS_RAMOOPS)) lb_ramoops(head); lb_boot_media_params(head); /* Board configuration information (including straps) */ lb_board_config(head); if (CONFIG(TPM_PPI)) lb_tpm_ppi(head); /* Add architecture records. */ lb_arch_add_records(head); /* Add all cbmem entries into the coreboot tables. */ cbmem_add_records_to_cbtable(head); if (CONFIG(HAVE_ACPI_TABLES)) lb_add_acpi_rsdp(head); /* Remember where my valid memory ranges are */ return lb_table_fini(head); } void *write_tables(void) { uintptr_t cbtable_start; uintptr_t cbtable_end; size_t cbtable_size; const size_t max_table_size = COREBOOT_TABLE_SIZE; cbtable_start = (uintptr_t)cbmem_add(CBMEM_ID_CBTABLE, max_table_size); if (!cbtable_start) { printk(BIOS_ERR, "Could not add CBMEM for coreboot table.\n"); return NULL; } /* Add architecture specific tables. */ arch_write_tables(cbtable_start); /* Write the coreboot table. */ cbtable_end = write_coreboot_table(cbtable_start); cbtable_size = cbtable_end - cbtable_start; if (cbtable_size > max_table_size) { printk(BIOS_ERR, "%s: coreboot table didn't fit (%zx/%zx)\n", __func__, cbtable_size, max_table_size); } printk(BIOS_DEBUG, "coreboot table: %zd bytes.\n", cbtable_size); /* Print CBMEM sections */ cbmem_list(); return (void *)cbtable_start; }