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https://github.com/AsahiLinux/u-boot
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x86: Add SMBIOS table support
System Management BIOS (SMBIOS) is a specification for how motherboard and system vendors present management information about their products in a standard format by extending the BIOS interface on Intel architecture systems. As of today the latest spec is 3.0 and can be downloaded from DMTF website. This commit adds a simple and minimum required implementation. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng
Simon Glass
parent
a34b46768f
commit
721e992a8a
6 changed files with 522 additions and 2 deletions
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@ -358,6 +358,17 @@ config GENERATE_ACPI_TABLE
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by the operating system. It defines platform-independent interfaces
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for configuration and power management monitoring.
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config GENERATE_SMBIOS_TABLE
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bool "Generate an SMBIOS (System Management BIOS) table"
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default y
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help
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The System Management BIOS (SMBIOS) specification addresses how
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motherboard and system vendors present management information about
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their products in a standard format by extending the BIOS interface
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on Intel architecture systems.
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Check http://www.dmtf.org/standards/smbios for details.
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endmenu
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config MAX_PIRQ_LINKS
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236
arch/x86/include/asm/smbios.h
Normal file
236
arch/x86/include/asm/smbios.h
Normal file
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@ -0,0 +1,236 @@
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*
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* Adapted from coreboot src/include/smbios.h
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SMBIOS_H_
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#define _SMBIOS_H_
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/* SMBIOS spec version implemented */
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#define SMBIOS_MAJOR_VER 3
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#define SMBIOS_MINOR_VER 0
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/* SMBIOS structure types */
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enum {
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SMBIOS_BIOS_INFORMATION = 0,
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SMBIOS_SYSTEM_INFORMATION = 1,
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SMBIOS_BOARD_INFORMATION = 2,
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SMBIOS_SYSTEM_ENCLOSURE = 3,
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SMBIOS_PROCESSOR_INFORMATION = 4,
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SMBIOS_CACHE_INFORMATION = 7,
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SMBIOS_SYSTEM_SLOTS = 9,
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SMBIOS_PHYS_MEMORY_ARRAY = 16,
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SMBIOS_MEMORY_DEVICE = 17,
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SMBIOS_MEMORY_ARRAY_MAPPED_ADDRESS = 19,
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SMBIOS_SYSTEM_BOOT_INFORMATION = 32,
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SMBIOS_END_OF_TABLE = 127
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};
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#define SMBIOS_INTERMEDIATE_OFFSET 16
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#define SMBIOS_STRUCT_EOS_BYTES 2
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struct __packed smbios_entry {
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u8 anchor[4];
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u8 checksum;
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u8 length;
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u8 major_ver;
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u8 minor_ver;
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u16 max_struct_size;
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u8 entry_point_rev;
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u8 formatted_area[5];
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u8 intermediate_anchor[5];
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u8 intermediate_checksum;
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u16 struct_table_length;
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u32 struct_table_address;
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u16 struct_count;
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u8 bcd_rev;
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};
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/* BIOS characteristics */
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#define BIOS_CHARACTERISTICS_PCI_SUPPORTED (1 << 7)
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#define BIOS_CHARACTERISTICS_UPGRADEABLE (1 << 11)
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#define BIOS_CHARACTERISTICS_SELECTABLE_BOOT (1 << 16)
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#define BIOS_CHARACTERISTICS_EXT1_ACPI (1 << 0)
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#define BIOS_CHARACTERISTICS_EXT2_TARGET (1 << 2)
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struct __packed smbios_type0 {
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u8 type;
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u8 length;
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u16 handle;
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u8 vendor;
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u8 bios_ver;
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u16 bios_start_segment;
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u8 bios_release_date;
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u8 bios_rom_size;
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u64 bios_characteristics;
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u8 bios_characteristics_ext1;
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u8 bios_characteristics_ext2;
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u8 bios_major_release;
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u8 bios_minor_release;
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u8 ec_major_release;
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u8 ec_minor_release;
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char eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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struct __packed smbios_type1 {
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u8 type;
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u8 length;
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u16 handle;
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u8 manufacturer;
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u8 product_name;
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u8 version;
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u8 serial_number;
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u8 uuid[16];
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u8 wakeup_type;
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u8 sku_number;
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u8 family;
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char eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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#define SMBIOS_BOARD_FEATURE_HOSTING (1 << 0)
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#define SMBIOS_BOARD_MOTHERBOARD 10
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struct __packed smbios_type2 {
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u8 type;
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u8 length;
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u16 handle;
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u8 manufacturer;
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u8 product_name;
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u8 version;
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u8 serial_number;
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u8 asset_tag_number;
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u8 feature_flags;
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u8 chassis_location;
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u16 chassis_handle;
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u8 board_type;
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char eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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#define SMBIOS_ENCLOSURE_DESKTOP 3
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#define SMBIOS_STATE_SAFE 3
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#define SMBIOS_SECURITY_NONE 3
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struct __packed smbios_type3 {
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u8 type;
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u8 length;
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u16 handle;
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u8 manufacturer;
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u8 chassis_type;
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u8 version;
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u8 serial_number;
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u8 asset_tag_number;
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u8 bootup_state;
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u8 power_supply_state;
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u8 thermal_state;
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u8 security_status;
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u32 oem_defined;
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u8 height;
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u8 number_of_power_cords;
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u8 element_count;
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u8 element_record_length;
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char eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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#define SMBIOS_PROCESSOR_TYPE_CENTRAL 3
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#define SMBIOS_PROCESSOR_STATUS_ENABLED 1
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#define SMBIOS_PROCESSOR_UPGRADE_NONE 6
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struct __packed smbios_type4 {
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u8 type;
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u8 length;
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u16 handle;
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u8 socket_designation;
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u8 processor_type;
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u8 processor_family;
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u8 processor_manufacturer;
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u32 processor_id[2];
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u8 processor_version;
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u8 voltage;
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u16 external_clock;
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u16 max_speed;
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u16 current_speed;
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u8 status;
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u8 processor_upgrade;
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u16 l1_cache_handle;
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u16 l2_cache_handle;
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u16 l3_cache_handle;
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u8 serial_number;
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u8 asset_tag;
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u8 part_number;
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u8 core_count;
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u8 core_enabled;
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u8 thread_count;
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u16 processor_characteristics;
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u16 processor_family2;
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u16 core_count2;
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u16 core_enabled2;
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u16 thread_count2;
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char eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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struct __packed smbios_type32 {
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u8 type;
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u8 length;
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u16 handle;
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u8 reserved[6];
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u8 boot_status;
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u8 eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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struct __packed smbios_type127 {
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u8 type;
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u8 length;
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u16 handle;
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u8 eos[SMBIOS_STRUCT_EOS_BYTES];
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};
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struct __packed smbios_header {
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u8 type;
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u8 length;
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u16 handle;
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};
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/**
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* fill_smbios_header() - Fill the header of an SMBIOS table
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*
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* This fills the header of an SMBIOS table structure.
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*
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* @table: start address of the structure
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* @type: the type of structure
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* @length: the length of the formatted area of the structure
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* @handle: the structure's handle, a unique 16-bit number
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*/
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static inline void fill_smbios_header(void *table, int type,
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int length, int handle)
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{
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struct smbios_header *header = table;
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header->type = type;
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header->length = length - SMBIOS_STRUCT_EOS_BYTES;
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header->handle = handle;
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}
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/**
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* Function prototype to write a specific type of SMBIOS structure
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*
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* @addr: start address to write the structure
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* @handle: the structure's handle, a unique 16-bit number
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* @return: size of the structure
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*/
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typedef int (*smbios_write_type)(u32 *addr, int handle);
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/**
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* write_smbios_table() - Write SMBIOS table
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*
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* This writes SMBIOS table at a given address.
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*
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* @addr: start address to write SMBIOS table
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* @return: end address of SMBIOS table
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*/
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u32 write_smbios_table(u32 addr);
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#endif /* _SMBIOS_H_ */
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@ -30,6 +30,7 @@ obj-y += relocate.o
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obj-y += physmem.o
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obj-$(CONFIG_X86_RAMTEST) += ramtest.o
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obj-y += sfi.o
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obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += smbios.o
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obj-y += string.o
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obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
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obj-y += tables.o
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269
arch/x86/lib/smbios.c
Normal file
269
arch/x86/lib/smbios.c
Normal file
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@ -0,0 +1,269 @@
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*
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* Adapted from coreboot src/arch/x86/smbios.c
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <version.h>
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#include <asm/cpu.h>
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#include <asm/smbios.h>
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#include <asm/tables.h>
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DECLARE_GLOBAL_DATA_PTR;
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/**
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* smbios_add_string() - add a string to the string area
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*
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* This adds a string to the string area which is appended directly after
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* the formatted portion of an SMBIOS structure.
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*
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* @start: string area start address
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* @str: string to add
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* @return: string number in the string area
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*/
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static int smbios_add_string(char *start, const char *str)
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{
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int i = 1;
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char *p = start;
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for (;;) {
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if (!*p) {
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strcpy(p, str);
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p += strlen(str);
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*p++ = '\0';
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*p++ = '\0';
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return i;
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}
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if (!strcmp(p, str))
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return i;
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p += strlen(p) + 1;
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i++;
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}
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}
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/**
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* smbios_string_table_len() - compute the string area size
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*
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* This computes the size of the string area including the string terminator.
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*
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* @start: string area start address
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* @return: string area size
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*/
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static int smbios_string_table_len(char *start)
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{
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char *p = start;
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int i, len = 0;
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while (*p) {
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i = strlen(p) + 1;
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p += i;
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len += i;
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}
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return len + 1;
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}
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static int smbios_write_type0(u32 *current, int handle)
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{
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struct smbios_type0 *t = (struct smbios_type0 *)*current;
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int len = sizeof(struct smbios_type0);
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memset(t, 0, sizeof(struct smbios_type0));
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fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
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t->vendor = smbios_add_string(t->eos, "U-Boot");
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t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION);
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t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE);
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t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
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t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
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BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
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BIOS_CHARACTERISTICS_UPGRADEABLE;
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#ifdef CONFIG_GENERATE_ACPI_TABLE
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t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
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#endif
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t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;
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t->bios_major_release = 0xff;
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t->bios_minor_release = 0xff;
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t->ec_major_release = 0xff;
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t->ec_minor_release = 0xff;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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return len;
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}
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static int smbios_write_type1(u32 *current, int handle)
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{
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struct smbios_type1 *t = (struct smbios_type1 *)*current;
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int len = sizeof(struct smbios_type1);
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memset(t, 0, sizeof(struct smbios_type1));
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fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SYS_VENDOR);
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t->product_name = smbios_add_string(t->eos, CONFIG_SYS_BOARD);
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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return len;
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}
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static int smbios_write_type2(u32 *current, int handle)
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{
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struct smbios_type2 *t = (struct smbios_type2 *)*current;
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int len = sizeof(struct smbios_type2);
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memset(t, 0, sizeof(struct smbios_type2));
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fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SYS_VENDOR);
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t->product_name = smbios_add_string(t->eos, CONFIG_SYS_BOARD);
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t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
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t->board_type = SMBIOS_BOARD_MOTHERBOARD;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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return len;
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}
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static int smbios_write_type3(u32 *current, int handle)
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{
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struct smbios_type3 *t = (struct smbios_type3 *)*current;
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int len = sizeof(struct smbios_type3);
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memset(t, 0, sizeof(struct smbios_type3));
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fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SYS_VENDOR);
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t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
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t->bootup_state = SMBIOS_STATE_SAFE;
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t->power_supply_state = SMBIOS_STATE_SAFE;
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t->thermal_state = SMBIOS_STATE_SAFE;
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t->security_status = SMBIOS_SECURITY_NONE;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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return len;
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}
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static int smbios_write_type4(u32 *current, int handle)
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{
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struct smbios_type4 *t = (struct smbios_type4 *)*current;
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int len = sizeof(struct smbios_type4);
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const char *vendor;
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char *name;
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char processor_name[CPU_MAX_NAME_LEN];
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struct cpuid_result res;
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memset(t, 0, sizeof(struct smbios_type4));
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fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
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t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
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t->processor_family = gd->arch.x86;
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vendor = cpu_vendor_name(gd->arch.x86_vendor);
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t->processor_manufacturer = smbios_add_string(t->eos, vendor);
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res = cpuid(1);
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t->processor_id[0] = res.eax;
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t->processor_id[1] = res.edx;
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name = cpu_get_name(processor_name);
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t->processor_version = smbios_add_string(t->eos, name);
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t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
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t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
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t->l1_cache_handle = 0xffff;
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t->l2_cache_handle = 0xffff;
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t->l3_cache_handle = 0xffff;
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t->processor_family2 = t->processor_family;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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return len;
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}
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static int smbios_write_type32(u32 *current, int handle)
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{
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struct smbios_type32 *t = (struct smbios_type32 *)*current;
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int len = sizeof(struct smbios_type32);
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memset(t, 0, sizeof(struct smbios_type32));
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fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
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|
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*current += len;
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static int smbios_write_type127(u32 *current, int handle)
|
||||
{
|
||||
struct smbios_type127 *t = (struct smbios_type127 *)*current;
|
||||
int len = sizeof(struct smbios_type127);
|
||||
|
||||
memset(t, 0, sizeof(struct smbios_type127));
|
||||
fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
|
||||
|
||||
*current += len;
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static smbios_write_type smbios_write_funcs[] = {
|
||||
smbios_write_type0,
|
||||
smbios_write_type1,
|
||||
smbios_write_type2,
|
||||
smbios_write_type3,
|
||||
smbios_write_type4,
|
||||
smbios_write_type32,
|
||||
smbios_write_type127
|
||||
};
|
||||
|
||||
u32 write_smbios_table(u32 addr)
|
||||
{
|
||||
struct smbios_entry *se;
|
||||
u32 tables;
|
||||
int len = 0;
|
||||
int max_struct_size = 0;
|
||||
int handle = 0;
|
||||
char *istart;
|
||||
int isize;
|
||||
int i;
|
||||
|
||||
/* 16 byte align the table address */
|
||||
addr = ALIGN(addr, 16);
|
||||
|
||||
se = (struct smbios_entry *)addr;
|
||||
memset(se, 0, sizeof(struct smbios_entry));
|
||||
|
||||
addr += sizeof(struct smbios_entry);
|
||||
addr = ALIGN(addr, 16);
|
||||
tables = addr;
|
||||
|
||||
/* populate minimum required tables */
|
||||
for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
|
||||
int tmp = smbios_write_funcs[i](&addr, handle++);
|
||||
max_struct_size = max(max_struct_size, tmp);
|
||||
len += tmp;
|
||||
}
|
||||
|
||||
memcpy(se->anchor, "_SM_", 4);
|
||||
se->length = sizeof(struct smbios_entry);
|
||||
se->major_ver = SMBIOS_MAJOR_VER;
|
||||
se->minor_ver = SMBIOS_MINOR_VER;
|
||||
se->max_struct_size = max_struct_size;
|
||||
memcpy(se->intermediate_anchor, "_DMI_", 5);
|
||||
se->struct_table_length = len;
|
||||
se->struct_table_address = tables;
|
||||
se->struct_count = handle;
|
||||
|
||||
/* calculate checksums */
|
||||
istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
|
||||
isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
|
||||
se->intermediate_checksum = table_compute_checksum(istart, isize);
|
||||
se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
|
||||
|
||||
return addr;
|
||||
}
|
||||
|
|
@ -7,6 +7,7 @@
|
|||
#include <common.h>
|
||||
#include <asm/sfi.h>
|
||||
#include <asm/mpspec.h>
|
||||
#include <asm/smbios.h>
|
||||
#include <asm/tables.h>
|
||||
#include <asm/acpi_table.h>
|
||||
|
||||
|
|
@ -56,4 +57,8 @@ void write_tables(void)
|
|||
rom_table_end = write_acpi_tables(rom_table_end);
|
||||
rom_table_end = ALIGN(rom_table_end, 1024);
|
||||
#endif
|
||||
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
|
||||
rom_table_end = write_smbios_table(rom_table_end);
|
||||
rom_table_end = ALIGN(rom_table_end, 1024);
|
||||
#endif
|
||||
}
|
||||
|
|
|
|||
|
|
@ -764,7 +764,6 @@ TODO List
|
|||
- Audio
|
||||
- Chrome OS verified boot
|
||||
- SMI and ACPI support, to provide platform info and facilities to Linux
|
||||
- Desktop Management Interface (DMI) [15] support
|
||||
|
||||
References
|
||||
----------
|
||||
|
|
@ -782,4 +781,3 @@ References
|
|||
[12] http://events.linuxfoundation.org/sites/events/files/slides/chromeos_and_diy_vboot_0.pdf
|
||||
[13] http://events.linuxfoundation.org/sites/events/files/slides/elce-2014.pdf
|
||||
[14] doc/device-tree-bindings/misc/intel,irq-router.txt
|
||||
[15] http://en.wikipedia.org/wiki/Desktop_Management_Interface
|
||||
|
|
|
|||
Loading…
Reference in a new issue