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author | Simon Glass <sjg@chromium.org> | 2020-11-05 16:32:10 +0300 |
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committer | Bin Meng <bmeng.cn@gmail.com> | 2020-11-06 05:18:20 +0300 |
commit | f96965315489fcb7fc9df8fe4da0137150bb3826 (patch) | |
tree | 249becdb03e1d1cd72697645b4e8a5c69e72bc86 /doc | |
parent | a3f5c8ea69a0047aa0db12517b3bf91ae7d3f682 (diff) | |
download | u-boot-f96965315489fcb7fc9df8fe4da0137150bb3826.tar.xz |
smbios: Add documentation and devicetree binding
Add information about how to set SMBIOS properties using the devicetree.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'doc')
-rw-r--r-- | doc/arch/x86.rst | 8 | ||||
-rw-r--r-- | doc/device-tree-bindings/sysinfo/smbios.txt | 77 |
2 files changed, 85 insertions, 0 deletions
diff --git a/doc/arch/x86.rst b/doc/arch/x86.rst index c6b70ce61a..cc307aa8d5 100644 --- a/doc/arch/x86.rst +++ b/doc/arch/x86.rst @@ -740,6 +740,14 @@ Note that this is a development feature only. It is not intended for use in production environments. Also it is not currently part of the automated tests so may break in the future. +SMBIOS tables +------------- + +To generate SMBIOS tables in U-Boot, for use by the OS, enable the +CONFIG_GENERATE_SMBIOS_TABLE option. The easiest way to provide the values to +use is via the device tree. For details see +device-tree-bindings/sysinfo/smbios.txt + TODO List --------- - Audio diff --git a/doc/device-tree-bindings/sysinfo/smbios.txt b/doc/device-tree-bindings/sysinfo/smbios.txt new file mode 100644 index 0000000000..b522322802 --- /dev/null +++ b/doc/device-tree-bindings/sysinfo/smbios.txt @@ -0,0 +1,77 @@ +SMBIOS sysinfo information +========================== + +This binding allows the values for the SMBIOS tables to be specified in the +devicetree, as below. + +Required properties: + + - compatible: "u-boot,smbios" or any other string depending on your board + +This driver allows providing board-specific features such as power control +GPIOs. In addition, the SMBIOS values can be specified in the device tree, +as below: + +An optional 'smbios' subnode can be used to provide these properties. Within +that, the properties are broken down by table type, as in the System Management +BIOS (Basic Input/Output System) Specification. + +Available subnodes for each table type are: + + - 1 : system + - 2 : baseboard + - 3 : chassis + +Within each subnode the following tables are recognised: + +"system" subnode optional properties: + + - manufacturer: Product manufacturer for system + - product: Product name + - version: Product version string + - serial: Serial number for system (note that this can be overridden by + the serial# environment variable) + - sku: Product SKU (Stock-Keeping Unit) + - family: Product family + +"baseboard" subnode optional properties: + + - manufacturer: Product manufacturer for baseboard + - product: Product name + - asset-tag: Asset tag for the motherboard, sometimes used in organisations + to track devices + +"chassis" subnode optional properties: + + - manufacturer: Product manufacturer for chassis + + +Example: + +sysinfo { + compatible = "sandbox,sysinfo-sandbox"; + + smbios { + /* Type 1 table */ + system { + manufacturer = "Google"; + product = "Coral"; + version = "rev2"; + serial = "123456789"; + sku = "sku3"; + family = "Google_Coral"; + }; + + /* Type 2 table */ + baseboard { + manufacturer = "Google"; + product = "Coral"; + asset-tag = "ABC123"; + }; + + /* Type 3 table */ + chassis { + manufacturer = "Google"; + }; + }; +}; |