diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h b/src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h new file mode 100644 index 00000000..1d98d601 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h @@ -0,0 +1,56 @@ +/** @file + Definition of GUIDed HOB for reserving MMRAM regions. + + This file defines: + * the GUID used to identify the GUID HOB for reserving MMRAM regions. + * the data structure of MMRAM descriptor to describe MMRAM candidate regions + * values of state of MMRAM candidate regions + * the GUID specific data structure of HOB for reserving MMRAM regions. + This GUIDed HOB can be used to convey the existence of the T-SEG reservation and H-SEG usage + +Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR> + +SPDX-License-Identifier: BSD-2-Clause-Patent + + @par Revision Reference: + GUIDs defined in MmCis spec version 0.9. + +**/ + +#ifndef _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_ +#define _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_ + +#define EFI_MM_PEI_MMRAM_MEMORY_RESERVE \ + { \ + 0x0703f912, 0xbf8d, 0x4e2a, {0xbe, 0x07, 0xab, 0x27, 0x25, 0x25, 0xc5, 0x92 } \ + } + +/** +* GUID specific data structure of HOB for reserving MMRAM regions. +* +* Inconsistent with specification here: +* EFI_HOB_MMRAM_DESCRIPTOR_BLOCK has been changed to EFI_MMRAM_HOB_DESCRIPTOR_BLOCK. +* This inconsistency is kept in code in order for backward compatibility. +**/ +typedef struct { + /// + /// Designates the number of possible regions in the system + /// that can be usable for MMRAM. + /// + /// Inconsistent with specification here: + /// In Framework MM 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. + /// + UINT32 NumberOfMmReservedRegions; + /// + /// Used throughout this protocol to describe the candidate + /// regions for MMRAM that are supported by this platform. + /// + EFI_MMRAM_DESCRIPTOR Descriptor[1]; +} EFI_MMRAM_HOB_DESCRIPTOR_BLOCK; + +extern EFI_GUID gEfiMmPeiSmramMemoryReserveGuid; + +#endif + |