| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2003-2004 Eric Biederman |
| * Copyright (C) 2005-2010 coresystems GmbH |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; version 2 of |
| * the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/cbconfig.h> |
| #include <console/console.h> |
| #include <console/uart.h> |
| #include <ip_checksum.h> |
| #include <boot/coreboot_tables.h> |
| #include <boot/tables.h> |
| #include <boot_device.h> |
| #include <string.h> |
| #include <version.h> |
| #include <boardid.h> |
| #include <device/device.h> |
| #include <fmap.h> |
| #include <stdlib.h> |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <bootmem.h> |
| #include <spi_flash.h> |
| #include <security/vboot/vbnv_layout.h> |
| #if IS_ENABLED(CONFIG_USE_OPTION_TABLE) |
| #include <option_table.h> |
| #endif |
| #if IS_ENABLED(CONFIG_CHROMEOS) |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| #include <arch/acpi.h> |
| #endif |
| #include <vendorcode/google/chromeos/chromeos.h> |
| #include <vendorcode/google/chromeos/gnvs.h> |
| #endif |
| #if IS_ENABLED(CONFIG_ARCH_X86) |
| #include <cpu/x86/mtrr.h> |
| #endif |
| #include <commonlib/helpers.h> |
| |
| static struct lb_header *lb_table_init(unsigned long addr) |
| { |
| struct lb_header *header; |
| |
| /* 16 byte align the address */ |
| addr += 15; |
| addr &= ~15; |
| |
| 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) |
| 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; |
| } |
| |
| void lb_add_serial(struct lb_serial *new_serial, void *data) |
| { |
| struct lb_header *header = (struct lb_header *)data; |
| struct lb_serial *serial; |
| |
| serial = (struct lb_serial *)lb_new_record(header); |
| serial->tag = LB_TAG_SERIAL; |
| serial->size = sizeof(*serial); |
| serial->type = new_serial->type; |
| serial->baseaddr = new_serial->baseaddr; |
| serial->baud = new_serial->baud; |
| serial->regwidth = new_serial->regwidth; |
| serial->input_hertz = new_serial->input_hertz; |
| serial->uart_pci_addr = new_serial->uart_pci_addr; |
| } |
| |
| 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_framebuffer(struct lb_header *header) |
| { |
| struct lb_framebuffer *framebuffer; |
| struct lb_framebuffer fb = {0}; |
| |
| if (!IS_ENABLED(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); |
| } |
| |
| 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; |
| } |
| |
| #if IS_ENABLED(CONFIG_CHROMEOS) |
| 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, "%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; |
| } |
| } |
| } |
| |
| static void lb_vdat(struct lb_header *header) |
| { |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) |
| struct lb_range *vdat; |
| |
| vdat = (struct lb_range *)lb_new_record(header); |
| vdat->tag = LB_TAG_VDAT; |
| vdat->size = sizeof(*vdat); |
| acpi_get_vdat_info(&vdat->range_start, &vdat->range_size); |
| #endif |
| } |
| |
| static void lb_vbnv(struct lb_header *header) |
| { |
| #if IS_ENABLED(CONFIG_PC80_SYSTEM) |
| struct lb_range *vbnv; |
| |
| vbnv = (struct lb_range *)lb_new_record(header); |
| vbnv->tag = LB_TAG_VBNV; |
| vbnv->size = sizeof(*vbnv); |
| vbnv->range_start = CONFIG_VBOOT_VBNV_OFFSET + 14; |
| vbnv->range_size = VBOOT_VBNV_BLOCK_SIZE; |
| #endif |
| } |
| |
| #if IS_ENABLED(CONFIG_VBOOT) |
| static void lb_vboot_handoff(struct lb_header *header) |
| { |
| void *addr; |
| uint32_t size; |
| struct lb_range *vbho; |
| |
| if (vboot_get_handoff_info(&addr, &size)) |
| return; |
| |
| vbho = (struct lb_range *)lb_new_record(header); |
| vbho->tag = LB_TAB_VBOOT_HANDOFF; |
| vbho->size = sizeof(*vbho); |
| vbho->range_start = (intptr_t)addr; |
| vbho->range_size = size; |
| } |
| #else |
| static inline void lb_vboot_handoff(struct lb_header *header) {} |
| #endif /* CONFIG_VBOOT */ |
| #endif /* CONFIG_CHROMEOS */ |
| |
| __attribute__((weak)) uint32_t board_id(void) { return UNDEFINED_STRAPPING_ID; } |
| __attribute__((weak)) uint32_t ram_code(void) { return UNDEFINED_STRAPPING_ID; } |
| __attribute__((weak)) uint32_t sku_id(void) { return UNDEFINED_STRAPPING_ID; } |
| |
| static void lb_board_id(struct lb_header *header) |
| { |
| struct lb_strapping_id *rec; |
| uint32_t bid = board_id(); |
| |
| if (bid == UNDEFINED_STRAPPING_ID) |
| return; |
| |
| rec = (struct lb_strapping_id *)lb_new_record(header); |
| |
| rec->tag = LB_TAG_BOARD_ID; |
| rec->size = sizeof(*rec); |
| rec->id_code = bid; |
| |
| printk(BIOS_INFO, "Board ID: %d\n", bid); |
| } |
| |
| static void lb_boot_media_params(struct lb_header *header) |
| { |
| struct lb_boot_media_params *bmp; |
| struct cbfs_props props; |
| const struct region_device *boot_dev; |
| struct region_device fmrd; |
| |
| boot_device_init(); |
| |
| if (cbfs_boot_region_properties(&props)) |
| 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 = props.offset; |
| bmp->cbfs_size = props.size; |
| bmp->boot_media_size = region_device_sz(boot_dev); |
| |
| bmp->fmap_offset = ~(uint64_t)0; |
| if (find_fmap_directory(&fmrd) == 0) |
| bmp->fmap_offset = region_device_offset(&fmrd); |
| } |
| |
| static void lb_ram_code(struct lb_header *header) |
| { |
| struct lb_strapping_id *rec; |
| uint32_t code = ram_code(); |
| |
| if (code == UNDEFINED_STRAPPING_ID) |
| return; |
| |
| rec = (struct lb_strapping_id *)lb_new_record(header); |
| |
| rec->tag = LB_TAG_RAM_CODE; |
| rec->size = sizeof(*rec); |
| rec->id_code = code; |
| |
| printk(BIOS_INFO, "RAM code: %d\n", code); |
| } |
| |
| static void lb_sku_id(struct lb_header *header) |
| { |
| struct lb_strapping_id *rec; |
| uint32_t sid = sku_id(); |
| |
| if (sid == UNDEFINED_STRAPPING_ID) |
| return; |
| |
| rec = (struct lb_strapping_id *)lb_new_record(header); |
| |
| rec->tag = LB_TAG_SKU_ID; |
| rec->size = sizeof(*rec); |
| rec->id_code = sid; |
| |
| printk(BIOS_INFO, "SKU ID: %d\n", sid); |
| } |
| |
| 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_VPD, LB_TAG_VPD}, |
| {CBMEM_ID_WIFI_CALIBRATION, LB_TAG_WIFI_CALIBRATION} |
| }; |
| 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, 8); |
| |
| 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; |
| } |
| |
| #if IS_ENABLED(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, 8); |
| 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 __attribute__((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 __attribute__((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) |
| head->table_bytes += rec->size; |
| |
| first_rec = lb_first_record(head); |
| head->table_checksum = compute_ip_checksum(first_rec, |
| head->table_bytes); |
| head->header_checksum = 0; |
| head->header_checksum = compute_ip_checksum(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; |
| } |
| |
| size_t write_coreboot_forwarding_table(uintptr_t entry, uintptr_t target) |
| { |
| struct lb_header *head; |
| |
| printk(BIOS_DEBUG, "Writing table forward entry at 0x%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 IS_ENABLED(CONFIG_USE_OPTION_TABLE) |
| { |
| struct cmos_option_table *option_table = |
| cbfs_boot_map_with_leak("cmos_layout.bin", |
| CBFS_COMPONENT_CMOS_LAYOUT, 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 |
| |
| /* Initialize the memory map at boot time. */ |
| bootmem_init(); |
| |
| /* No other memory areas can be added after the memory table has been |
| * committed as the entries won't show up in the serialize mem table. */ |
| bootmem_write_memory_table(lb_memory(head)); |
| |
| /* Record our motherboard */ |
| lb_mainboard(head); |
| |
| /* Record the serial ports and consoles */ |
| #if IS_ENABLED(CONFIG_CONSOLE_SERIAL) |
| uart_fill_lb(head); |
| #endif |
| #if IS_ENABLED(CONFIG_CONSOLE_USB) |
| lb_add_console(LB_TAG_CONSOLE_EHCI, head); |
| #endif |
| |
| /* Record our various random string information */ |
| lb_strings(head); |
| lb_record_version_timestamp(head); |
| /* Record our framebuffer */ |
| lb_framebuffer(head); |
| |
| #if IS_ENABLED(CONFIG_CHROMEOS) |
| /* Record our GPIO settings (ChromeOS specific) */ |
| lb_gpios(head); |
| |
| /* pass along the VDAT buffer address */ |
| lb_vdat(head); |
| |
| /* pass along VBNV offsets in CMOS */ |
| lb_vbnv(head); |
| |
| /* pass along the vboot_handoff address. */ |
| lb_vboot_handoff(head); |
| #endif |
| |
| /* Add strapping IDs if available */ |
| lb_board_id(head); |
| lb_ram_code(head); |
| lb_sku_id(head); |
| |
| /* Add SPI flash description if available */ |
| if (IS_ENABLED(CONFIG_BOOT_DEVICE_SPI_FLASH)) |
| lb_spi_flash(head); |
| |
| add_cbmem_pointers(head); |
| |
| /* Add board-specific table entries, if any. */ |
| lb_board(head); |
| |
| #if IS_ENABLED(CONFIG_CHROMEOS_RAMOOPS) |
| lb_ramoops(head); |
| #endif |
| |
| lb_boot_media_params(head); |
| |
| /* Add architecture records. */ |
| lb_arch_add_records(head); |
| |
| /* Add all cbmem entries into the coreboot tables. */ |
| cbmem_add_records_to_cbtable(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; |
| } |
| |
| /* 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(); |
| } |