| | 1 | /** @file\r |
| | 2 | Definition of GUIDed HOB for reserving MMRAM regions.\r |
| | 3 | \r |
| | 4 | This file defines:\r |
| | 5 | * the GUID used to identify the GUID HOB for reserving MMRAM regions.\r |
| | 6 | * the data structure of MMRAM descriptor to describe MMRAM candidate regions\r |
| | 7 | * values of state of MMRAM candidate regions\r |
| | 8 | * the GUID specific data structure of HOB for reserving MMRAM regions.\r |
| | 9 | This GUIDed HOB can be used to convey the existence of the T-SEG reservation and H-SEG usage\r |
| | 10 | \r |
| | 11 | Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>\r |
| | 12 | Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>\r |
| | 13 | \r |
| | 14 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| | 15 | \r |
| | 16 | @par Revision Reference:\r |
| | 17 | GUIDs defined in MmCis spec version 0.9.\r |
| | 18 | \r |
| | 19 | **/\r |
| | 20 | \r |
| | 21 | #ifndef _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_\r |
| | 22 | #define _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_\r |
| | 23 | \r |
| | 24 | #define EFI_MM_PEI_MMRAM_MEMORY_RESERVE \\r |
| | 25 | { \\r |
| | 26 | 0x0703f912, 0xbf8d, 0x4e2a, {0xbe, 0x07, 0xab, 0x27, 0x25, 0x25, 0xc5, 0x92 } \\r |
| | 27 | }\r |
| | 28 | \r |
| | 29 | /**\r |
| | 30 | * GUID specific data structure of HOB for reserving MMRAM regions.\r |
| | 31 | *\r |
| | 32 | * Inconsistent with specification here:\r |
| | 33 | * EFI_HOB_MMRAM_DESCRIPTOR_BLOCK has been changed to EFI_MMRAM_HOB_DESCRIPTOR_BLOCK.\r |
| | 34 | * This inconsistency is kept in code in order for backward compatibility.\r |
| | 35 | **/\r |
| | 36 | typedef struct {\r |
| | 37 | ///\r |
| | 38 | /// Designates the number of possible regions in the system\r |
| | 39 | /// that can be usable for MMRAM.\r |
| | 40 | ///\r |
| | 41 | /// Inconsistent with specification here:\r |
| | 42 | /// In Framework MM CIS 0.91 specification, it defines the field type as UINTN.\r |
| | 43 | /// However, HOBs are supposed to be CPU neutral, so UINT32 should be used instead.\r |
| | 44 | ///\r |
| | 45 | UINT32 NumberOfMmReservedRegions;\r |
| | 46 | ///\r |
| | 47 | /// Used throughout this protocol to describe the candidate\r |
| | 48 | /// regions for MMRAM that are supported by this platform.\r |
| | 49 | ///\r |
| | 50 | EFI_MMRAM_DESCRIPTOR Descriptor[1];\r |
| | 51 | } EFI_MMRAM_HOB_DESCRIPTOR_BLOCK;\r |
| | 52 | \r |
| | 53 | extern EFI_GUID gEfiMmPeiSmramMemoryReserveGuid;\r |
| | 54 | \r |
| | 55 | #endif\r |
| | 56 | \r |
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