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bmo-about-the-firmwareschema-resource.adoc

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About the FirmwareSchema resource

BIOS settings vary among hardware vendors and host models. A FirmwareSchema resource is a read-only resource that contains the types and limits for each BIOS setting on each host model. The data comes directly from the BMC through Ironic. The FirmwareSchema enables you to identify valid values you can specify in the spec field of the HostFirmwareSettings resource. The FirmwareSchema resource has a unique identifier derived from its settings and limits. Identical host models use the same FirmwareSchema identifier. It is likely that multiple instances of HostFirmwareSettings use the same FirmwareSchema.

Table 1. FirmwareSchema specification
Parameters Description 
<BIOS_setting_name>
  attribute_type:
  allowable_values:
  lower_bound:
  upper_bound:
  min_length:
  max_length:
  read_only:
  unique:

The spec is a simple map consisting of the BIOS setting name and the limits of the setting. The fields include:

  • attribute_type: The type of setting. The supported types are:

    • Enumeration

    • Integer

    • String

    • Boolean

  • allowable_values: A list of allowable values when the attribute_type is Enumeration.

  • lower_bound: The lowest allowed value when attribute_type is Integer.

  • upper_bound: The highest allowed value when attribute_type is Integer.

  • min_length: The shortest string length that the value can have when attribute_type is String.

  • max_length: The longest string length that the value can have when attribute_type is String.

  • read_only: The setting is read only and cannot be modified.

  • unique: The setting is specific to this host.