EFI_SMRAM_HOB_DESCRIPTOR_BLOCK Struct Reference


Data Fields

UINT32 NumberOfSmmReservedRegions
EFI_SMRAM_DESCRIPTOR Descriptor [1]

Detailed Description

GUID specific data structure of HOB for reserving SMRAM regions.

Inconsistent with specification here: EFI_HOB_SMRAM_DESCRIPTOR_BLOCK has been changed to EFI_SMRAM_HOB_DESCRIPTOR_BLOCK. This inconsistency is kept in code in order for backward compatibility.


Field Documentation

Used throughout this protocol to describe the candidate regions for SMRAM that are supported by this platform.

Designates the number of possible regions in the system that can be usable for SMRAM.

Inconsistent with specification here: In Framework SMM CIS 0.91 specification, it defines the field type as UINTN. However, HOBs are supposed to be CPU neutral, so UINT32 should be used instead.


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