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diff --git a/stand/efi/include/ipxe_download.h b/stand/efi/include/ipxe_download.h
new file mode 100644
--- /dev/null
+++ b/stand/efi/include/ipxe_download.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2026 Netfilix, Inc. Written by Warner Losh
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+/*
+ * IPXE protocol to download files
+ *
+ * Written from https://dox.ipxe.org/efi__download_8h.html using the names
+ * contained there for compatibility. See that for the full docs. Provides the
+ * same interface as <ipxe/efi/efi_download.h> from the ipxe distribution.
+ */
+
+typedef struct _IPXE_DOWNLOAD_PROTOCOL IPXE_DOWNLOAD_PROTOCOL;
+typedef void *IPXE_DOWNLOAD_FILE;
+typedef EFI_STATUS(EFIAPI *IPXE_DOWNLOAD_DATA_CALLBACK)(IN VOID *, IN VOID *, IN UINTN, IN UINTN);
+typedef void(EFIAPI *IPXE_DOWNLOAD_FINISH_CALLBACK)(IN VOID *, IN EFI_STATUS);
+typedef EFI_STATUS(EFIAPI *IPXE_DOWNLOAD_START)(IN IPXE_DOWNLOAD_PROTOCOL *,
+ IN CHAR8 *, IN IPXE_DOWNLOAD_DATA_CALLBACK, IN IPXE_DOWNLOAD_FINISH_CALLBACK,
+ IN VOID *, OUT IPXE_DOWNLOAD_FILE *);
+typedef EFI_STATUS(EFIAPI *IPXE_DOWNLOAD_ABORT)(IN IPXE_DOWNLOAD_PROTOCOL *,
+ IN IPXE_DOWNLOAD_FILE, IN EFI_STATUS);
+typedef EFI_STATUS(EFIAPI *IPXE_DOWNLOAD_POLL) (IN IPXE_DOWNLOAD_PROTOCOL *);
+
+struct _IPXE_DOWNLOAD_PROTOCOL {
+ IPXE_DOWNLOAD_START Start;
+ IPXE_DOWNLOAD_ABORT Abort;
+ IPXE_DOWNLOAD_POLL Poll;
+};
+#define IPXE_DOWNLOAD_PROTOCOL_GUID \
+ { 0x3eaeaebd, 0xdecf, 0x493b, { 0x9b, 0xd1, 0xcd, 0xb2, 0xde, 0xca, 0xe7, 0x19 } }
+
+
diff --git a/stand/efi/loader/Makefile b/stand/efi/loader/Makefile
--- a/stand/efi/loader/Makefile
+++ b/stand/efi/loader/Makefile
@@ -25,6 +25,7 @@
efi_main.c \
framebuffer.c \
main.c \
+ memdisk.c \
self_reloc.c \
vers.c \
gfx_fb.c \
diff --git a/stand/efi/loader/loader_efi.h b/stand/efi/loader/loader_efi.h
--- a/stand/efi/loader/loader_efi.h
+++ b/stand/efi/loader/loader_efi.h
@@ -59,6 +59,8 @@
void efi_copy_finish(void);
void efi_copy_finish_nop(void);
+void maybe_download_ramdisk(int argc, CHAR16 **argv);
+
#if defined(__amd64__) || defined(__i386__)
/* Need this to setup page tables */
extern EFI_PHYSICAL_ADDRESS staging;
diff --git a/stand/efi/loader/main.c b/stand/efi/loader/main.c
--- a/stand/efi/loader/main.c
+++ b/stand/efi/loader/main.c
@@ -1299,6 +1299,14 @@
*/
bcache_init(32768, 512);
+ /*
+ * Scan the command line args for memdisk=<url> and download that image
+ * to install as a ramdisk. This needs to be done before we scan the
+ * handles because it installs a handle and creates the right ACPI
+ * tables for the kernel to find it.
+ */
+ maybe_download_ramdisk(argc, argv);
+
/*
* Scan the BLOCK IO MEDIA handles then
* march through the device switch probing for things.
diff --git a/stand/efi/loader/memdisk.c b/stand/efi/loader/memdisk.c
new file mode 100644
--- /dev/null
+++ b/stand/efi/loader/memdisk.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright (c) 2026 Netfilix, Inc. Written by Warner Losh
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Derived from memdisk_uefi.c
+ * Copyright 2025 Richard Russo
+ * SPDX-License-Identifier: BSD-2-Clause-Patent
+ */
+
+#include "loader_efi.h"
+#include <efilib.h>
+#include <IndustryStandard/Acpi61.h>
+#include <Protocol/AcpiSystemDescriptionTable.h>
+#include <Protocol/AcpiTable.h>
+#include <Protocol/RamDisk.h>
+#include <ipxe_download.h>
+#include <sys/_param.h>
+#include "RamDisk.hex"
+
+static EFI_GUID acpitableGuid = EFI_ACPI_TABLE_PROTOCOL_GUID;
+static EFI_GUID ipxeGuid = IPXE_DOWNLOAD_PROTOCOL_GUID;
+static EFI_GUID ramdiskGuid = EFI_RAM_DISK_PROTOCOL_GUID;
+static EFI_GUID virtual_disk_guid = EFI_VIRTUAL_DISK_GUID;
+static EFI_GUID virtual_cd_guid = EFI_VIRTUAL_CD_GUID;
+
+EFI_MEMORY_TYPE mem_type = EfiReservedMemoryType;
+
+bool downloading = false;
+UINTN download_size = 0;
+UINTN download_progress = 0;
+UINTN download_progress_amount = 0;
+EFI_PHYSICAL_ADDRESS download_buffer;
+EFI_STATUS download_status = EFI_SUCCESS;
+
+/*
+ * CalculateSum8 and CalculateCheckSum8 taken from edk2/MdePkg/Library/BaseLib/CheckSum.c
+ * Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.
+ * Copyright (c) 2022, Pedro Falcato. All rights reserved.<BR>
+ * SPDX-License-Identifier: BSD-2-Clause-Patent
+ */
+static UINT8 EFIAPI
+CalculateSum8(IN CONST UINT8 *Buffer, IN UINTN Length)
+{
+ UINT8 Sum;
+ UINTN Count;
+
+ for (Sum = 0, Count = 0; Count < Length; Count++) {
+ Sum = (UINT8)(Sum + *(Buffer + Count));
+ }
+ return Sum;
+}
+
+static UINT8 EFIAPI
+CalculateCheckSum8(IN CONST UINT8 *Buffer, IN UINTN Length)
+{
+ UINT8 CheckSum;
+ CheckSum = CalculateSum8 (Buffer, Length);
+ /* Return the checksum based on 2's complement. */
+ return (UINT8)(0x100 - CheckSum);
+}
+
+/*
+ * This function taken from
+ * edk2/MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskProtocol.c Mostly taken
+ * from RamDiskPublishNfit and RamDiskPublishSsdt, and adjusted to suit the
+ * Memdisk Environment
+ * Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.
+ * (C) Copyright 2016 Hewlett Packard Enterprise Development LP
+ * Copyright (c) Microsoft Corporation.
+ * SPDX-License-Identifier: BSD-2-Clause-Patent
+ */
+static void
+setup_nvdimm_table(EFI_ACPI_TABLE_PROTOCOL *acpi_table,
+ EFI_PHYSICAL_ADDRESS DownloadBuffer, UINTN DownloadSize, EFI_GUID DownloadType) {
+
+ /*
+ * The System Descriptor Table Protocol is part of the Platform
+ * Initialization (PI) spec it's not available by the time we're
+ * running, so we're just going to skip that and assume there's no
+ * NVDIMM root device.
+ */
+ UINTN TableKey;
+ EFI_STATUS Status;
+
+ /* Add SSDT for NVDIMM root device */
+ Status = acpi_table->InstallAcpiTable(acpi_table,
+ ramdisk_aml_code, sizeof(ramdisk_aml_code), &TableKey);
+ if (EFI_ERROR(Status)) {
+ printf("Couldn't add SSDR table\n");
+ }
+
+ EFI_ACPI_DESCRIPTION_HEADER *NfitHeader;
+ EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE *SpaRange;
+ VOID *Nfit;
+ UINT32 NfitLen;
+ UINT64 CurrentData;
+ UINT8 Checksum;
+
+ NfitLen = sizeof(EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE) +
+ sizeof(EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE);
+ Status = BS->AllocatePool(EfiACPIReclaimMemory, NfitLen, &Nfit);
+ if (EFI_ERROR(Status)) {
+ printf("Cannot allocate NFIT space\n");
+ return;
+ }
+ BS->SetMem(Nfit, NfitLen, 0);
+
+ SpaRange = (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE *)
+ ((UINT8 *)Nfit + sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE));
+
+ NfitHeader = (EFI_ACPI_DESCRIPTION_HEADER *)Nfit;
+ NfitHeader->Signature = EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_STRUCTURE_SIGNATURE;
+ NfitHeader->Length = NfitLen;
+ NfitHeader->Revision = EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_REVISION;
+ NfitHeader->Checksum = 0;
+ NfitHeader->OemRevision = 0;
+ NfitHeader->CreatorId = 0;
+ NfitHeader->CreatorRevision = 0;
+ CurrentData = 0x204b5349444d454d; // "MEMDISK "
+ BS->CopyMem (NfitHeader->OemId, "MEMDSK", sizeof (NfitHeader->OemId));
+ BS->CopyMem (&NfitHeader->OemTableId, &CurrentData, sizeof (UINT64));
+
+ /*
+ * Fill in the content of the SPA Range Structure.
+ */
+ SpaRange->Type = EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE_TYPE;
+ SpaRange->Length = sizeof(EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE);
+ SpaRange->SystemPhysicalAddressRangeBase = DownloadBuffer;
+ SpaRange->SystemPhysicalAddressRangeLength = DownloadSize;
+ BS->CopyMem(&SpaRange->AddressRangeTypeGUID, &DownloadType, sizeof(EFI_GUID));
+ SpaRange->AddressRangeMemoryMappingAttribute = EFI_MEMORY_WB;
+
+ Checksum = CalculateCheckSum8((UINT8 *)Nfit, NfitHeader->Length);
+ NfitHeader->Checksum = Checksum;
+
+ /*
+ * Publish the NFIT to the ACPI table.
+ * Note, since the NFIT might be modified by other driver, therefore, we
+ * do not track the returning TableKey from the InstallAcpiTable().
+ */
+ Status = acpi_table->InstallAcpiTable (acpi_table,
+ Nfit, NfitHeader->Length, &TableKey);
+ if (EFI_ERROR(Status)) {
+ printf("Couldn't add NFIT table\n");
+ }
+}
+
+static EFI_STATUS EFIAPI
+download_data(IN VOID *Context, IN VOID *Buffer, IN UINTN BufferLength, IN UINTN FileOffset)
+{
+ EFI_STATUS status;
+ UINTN pages;
+
+ if (download_size == 0 && BufferLength == 0) {
+ download_size = FileOffset;
+ download_progress_amount = FileOffset / 20;
+ download_size = roundup2(download_size, 4096);
+ pages = download_size >> 12;
+ status = BS->AllocatePages(AllocateAnyPages, mem_type, pages, &download_buffer);
+ if (EFI_ERROR (status)) {
+ downloading = false;
+ download_status = status;
+ return (status);
+ }
+ BS->SetMem((void *)download_buffer, pages << 12, 0);
+ return (EFI_SUCCESS);
+ }
+ if (FileOffset + BufferLength > download_size) {
+ printf("Download exceeded buffer, throwing it all away\n");
+ downloading = false;
+ download_status = EFI_BAD_BUFFER_SIZE;
+ BS->FreePool((void *)download_buffer);
+ download_buffer = 0;
+ return (download_status);
+ }
+ CHAR8 *src = Buffer;
+ CHAR8 *dst = (void*)(download_buffer + FileOffset);
+ BS->CopyMem(dst, src, BufferLength);
+ UINTN before = download_progress / download_progress_amount;
+ download_progress += BufferLength;
+ UINTN after = download_progress / download_progress_amount;
+ if (after != before)
+ printf(".");
+ return (EFI_SUCCESS);
+}
+
+static void EFIAPI
+download_finish(IN VOID *Context, IN EFI_STATUS Status)
+{
+ downloading = false;
+ download_status = Status;
+}
+
+static void
+do_download_ramdisk(const char *url, bool is_disk)
+{
+ EFI_STATUS Status;
+ EFI_GUID download_type = is_disk ? virtual_disk_guid : virtual_cd_guid;
+
+ EFI_ACPI_TABLE_PROTOCOL *acpi_table;
+ IPXE_DOWNLOAD_PROTOCOL *ipxe_download;
+ IPXE_DOWNLOAD_FILE token;
+ EFI_RAM_DISK_PROTOCOL *ram_disk;
+ EFI_DEVICE_PATH_PROTOCOL *ram_disk_path;
+
+ Status = BS->LocateProtocol (&ipxeGuid, NULL, (void**)&ipxe_download);
+ if (EFI_ERROR (Status))
+ return;
+ Status = BS->LocateProtocol (&ramdiskGuid, NULL, (void**)&ram_disk);
+ if (EFI_ERROR (Status))
+ return;
+ Status = BS->LocateProtocol (&acpitableGuid, NULL, (void**)&acpi_table);
+ if (EFI_ERROR (Status))
+ return;
+ Status = BS->LocateProtocol (&ramdiskGuid, NULL, (void**)&ram_disk);
+ if (EFI_ERROR (Status))
+ return;
+
+ printf("Downloading %s as %s: ", url, is_disk ? "disk" : "cd");
+ downloading = true;
+ Status = ipxe_download->Start(ipxe_download, url, download_data, download_finish,
+ NULL, &token);
+ if (EFI_ERROR (Status)) {
+ printf("Couldn't start download %u\n", (unsigned)Status);
+ return;
+ }
+ while (downloading) {
+ ipxe_download->Poll(ipxe_download);
+ }
+ if (EFI_ERROR (EFI_ERROR(download_status))) {
+ printf("Couldn't start download %u\n", (unsigned)Status);
+ return;
+ }
+
+ Status = ram_disk->Register(download_buffer, download_size,
+ &download_type, NULL, &ram_disk_path);
+ if (EFI_ERROR(Status)) {
+ printf("failed to register ram disk %u\n", (unsigned)Status);
+ BS->FreePool((void *)download_buffer);
+ return;
+ }
+
+ /* XXX print the device path of the ramdisk */
+
+ /*
+ * finally, add the ramdisk as an nvdimm
+ */
+ setup_nvdimm_table(acpi_table, download_buffer, download_size, download_type);
+}
+
+/*
+ * Scan the command line for memdisk=url or memcd=url. Do nothing if that's not
+ * present, otherwise try to download that image.
+ *
+ * Open Question: Do we want some way to chain boot into the /boot/loader.efi or
+ * \efi\boot\bootXXXXX.efi inside the ram disk we load? If so, how do we keep
+ * from infinite chainbooting? Also, I don't understand the load it but don't save
+ * it option...
+ */
+void
+maybe_download_ramdisk(int argc, CHAR16 **argv)
+{
+ char var[256];
+
+ for (int i = 0; i < argc; i++) {
+ cpy16to8(argv[i], var, sizeof(var));
+ if (strncmp(var, "memdisk=", 8) == 0) {
+ do_download_ramdisk(var + 8, true);
+ return;
+ }
+ if (strncmp(var, "memcd=", 6) == 0) {
+ do_download_ramdisk(var + 6, false);
+ return;
+ }
+ }
+ return;
+}
diff --git a/sys/contrib/edk2/Include/IndustryStandard/Acpi61.h b/sys/contrib/edk2/Include/IndustryStandard/Acpi61.h
new file mode 100644
--- /dev/null
+++ b/sys/contrib/edk2/Include/IndustryStandard/Acpi61.h
@@ -0,0 +1,2442 @@
+/** @file
+ ACPI 6.1 definitions from the ACPI Specification Revision 6.1 January, 2016.
+
+ Copyright (c) 2016 - 2022, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
+ Copyright (c) 2020, ARM Ltd. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef _ACPI_6_1_H_
+#define _ACPI_6_1_H_
+
+#include <IndustryStandard/Acpi60.h>
+
+///
+/// _PSD Revision for ACPI 6.1
+///
+#define EFI_ACPI_6_1_AML_PSD_REVISION 0
+
+///
+/// _CPC Revision for ACPI 6.1
+///
+#define EFI_ACPI_6_1_AML_CPC_REVISION 2
+
+//
+// Ensure proper structure formats
+//
+#pragma pack(1)
+
+///
+/// ACPI 6.1 Generic Address Space definition
+///
+typedef struct {
+ UINT8 AddressSpaceId;
+ UINT8 RegisterBitWidth;
+ UINT8 RegisterBitOffset;
+ UINT8 AccessSize;
+ UINT64 Address;
+} EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE;
+
+//
+// Generic Address Space Address IDs
+//
+#define EFI_ACPI_6_1_SYSTEM_MEMORY 0
+#define EFI_ACPI_6_1_SYSTEM_IO 1
+#define EFI_ACPI_6_1_PCI_CONFIGURATION_SPACE 2
+#define EFI_ACPI_6_1_EMBEDDED_CONTROLLER 3
+#define EFI_ACPI_6_1_SMBUS 4
+#define EFI_ACPI_6_1_PLATFORM_COMMUNICATION_CHANNEL 0x0A
+#define EFI_ACPI_6_1_FUNCTIONAL_FIXED_HARDWARE 0x7F
+
+//
+// Generic Address Space Access Sizes
+//
+#define EFI_ACPI_6_1_UNDEFINED 0
+#define EFI_ACPI_6_1_BYTE 1
+#define EFI_ACPI_6_1_WORD 2
+#define EFI_ACPI_6_1_DWORD 3
+#define EFI_ACPI_6_1_QWORD 4
+
+//
+// ACPI 6.1 table structures
+//
+
+///
+/// Root System Description Pointer Structure
+///
+typedef struct {
+ UINT64 Signature;
+ UINT8 Checksum;
+ UINT8 OemId[6];
+ UINT8 Revision;
+ UINT32 RsdtAddress;
+ UINT32 Length;
+ UINT64 XsdtAddress;
+ UINT8 ExtendedChecksum;
+ UINT8 Reserved[3];
+} EFI_ACPI_6_1_ROOT_SYSTEM_DESCRIPTION_POINTER;
+
+///
+/// RSD_PTR Revision (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION 0x02 ///< ACPISpec (Revision 6.1) says current value is 2
+
+///
+/// Common table header, this prefaces all ACPI tables, including FACS, but
+/// excluding the RSD PTR structure
+///
+typedef struct {
+ UINT32 Signature;
+ UINT32 Length;
+} EFI_ACPI_6_1_COMMON_HEADER;
+
+//
+// Root System Description Table
+// No definition needed as it is a common description table header, the same with
+// EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT32 table pointers.
+//
+
+///
+/// RSDT Revision (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_ROOT_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
+
+//
+// Extended System Description Table
+// No definition needed as it is a common description table header, the same with
+// EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT64 table pointers.
+//
+
+///
+/// XSDT Revision (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_EXTENDED_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
+
+///
+/// Fixed ACPI Description Table Structure (FADT)
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 FirmwareCtrl;
+ UINT32 Dsdt;
+ UINT8 Reserved0;
+ UINT8 PreferredPmProfile;
+ UINT16 SciInt;
+ UINT32 SmiCmd;
+ UINT8 AcpiEnable;
+ UINT8 AcpiDisable;
+ UINT8 S4BiosReq;
+ UINT8 PstateCnt;
+ UINT32 Pm1aEvtBlk;
+ UINT32 Pm1bEvtBlk;
+ UINT32 Pm1aCntBlk;
+ UINT32 Pm1bCntBlk;
+ UINT32 Pm2CntBlk;
+ UINT32 PmTmrBlk;
+ UINT32 Gpe0Blk;
+ UINT32 Gpe1Blk;
+ UINT8 Pm1EvtLen;
+ UINT8 Pm1CntLen;
+ UINT8 Pm2CntLen;
+ UINT8 PmTmrLen;
+ UINT8 Gpe0BlkLen;
+ UINT8 Gpe1BlkLen;
+ UINT8 Gpe1Base;
+ UINT8 CstCnt;
+ UINT16 PLvl2Lat;
+ UINT16 PLvl3Lat;
+ UINT16 FlushSize;
+ UINT16 FlushStride;
+ UINT8 DutyOffset;
+ UINT8 DutyWidth;
+ UINT8 DayAlrm;
+ UINT8 MonAlrm;
+ UINT8 Century;
+ UINT16 IaPcBootArch;
+ UINT8 Reserved1;
+ UINT32 Flags;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE ResetReg;
+ UINT8 ResetValue;
+ UINT16 ArmBootArch;
+ UINT8 MinorVersion;
+ UINT64 XFirmwareCtrl;
+ UINT64 XDsdt;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XPm1aEvtBlk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XPm1bEvtBlk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XPm1aCntBlk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XPm1bCntBlk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XPm2CntBlk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XPmTmrBlk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XGpe0Blk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE XGpe1Blk;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE SleepControlReg;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE SleepStatusReg;
+ UINT64 HypervisorVendorIdentity;
+} EFI_ACPI_6_1_FIXED_ACPI_DESCRIPTION_TABLE;
+
+///
+/// FADT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_FIXED_ACPI_DESCRIPTION_TABLE_REVISION 0x06
+#define EFI_ACPI_6_1_FIXED_ACPI_DESCRIPTION_TABLE_MINOR_REVISION 0x01
+
+//
+// Fixed ACPI Description Table Preferred Power Management Profile
+//
+#define EFI_ACPI_6_1_PM_PROFILE_UNSPECIFIED 0
+#define EFI_ACPI_6_1_PM_PROFILE_DESKTOP 1
+#define EFI_ACPI_6_1_PM_PROFILE_MOBILE 2
+#define EFI_ACPI_6_1_PM_PROFILE_WORKSTATION 3
+#define EFI_ACPI_6_1_PM_PROFILE_ENTERPRISE_SERVER 4
+#define EFI_ACPI_6_1_PM_PROFILE_SOHO_SERVER 5
+#define EFI_ACPI_6_1_PM_PROFILE_APPLIANCE_PC 6
+#define EFI_ACPI_6_1_PM_PROFILE_PERFORMANCE_SERVER 7
+#define EFI_ACPI_6_1_PM_PROFILE_TABLET 8
+
+//
+// Fixed ACPI Description Table Boot Architecture Flags
+// All other bits are reserved and must be set to 0.
+//
+#define EFI_ACPI_6_1_LEGACY_DEVICES BIT0
+#define EFI_ACPI_6_1_8042 BIT1
+#define EFI_ACPI_6_1_VGA_NOT_PRESENT BIT2
+#define EFI_ACPI_6_1_MSI_NOT_SUPPORTED BIT3
+#define EFI_ACPI_6_1_PCIE_ASPM_CONTROLS BIT4
+#define EFI_ACPI_6_1_CMOS_RTC_NOT_PRESENT BIT5
+
+//
+// Fixed ACPI Description Table Arm Boot Architecture Flags
+// All other bits are reserved and must be set to 0.
+//
+#define EFI_ACPI_6_1_ARM_PSCI_COMPLIANT BIT0
+#define EFI_ACPI_6_1_ARM_PSCI_USE_HVC BIT1
+
+//
+// Fixed ACPI Description Table Fixed Feature Flags
+// All other bits are reserved and must be set to 0.
+//
+#define EFI_ACPI_6_1_WBINVD BIT0
+#define EFI_ACPI_6_1_WBINVD_FLUSH BIT1
+#define EFI_ACPI_6_1_PROC_C1 BIT2
+#define EFI_ACPI_6_1_P_LVL2_UP BIT3
+#define EFI_ACPI_6_1_PWR_BUTTON BIT4
+#define EFI_ACPI_6_1_SLP_BUTTON BIT5
+#define EFI_ACPI_6_1_FIX_RTC BIT6
+#define EFI_ACPI_6_1_RTC_S4 BIT7
+#define EFI_ACPI_6_1_TMR_VAL_EXT BIT8
+#define EFI_ACPI_6_1_DCK_CAP BIT9
+#define EFI_ACPI_6_1_RESET_REG_SUP BIT10
+#define EFI_ACPI_6_1_SEALED_CASE BIT11
+#define EFI_ACPI_6_1_HEADLESS BIT12
+#define EFI_ACPI_6_1_CPU_SW_SLP BIT13
+#define EFI_ACPI_6_1_PCI_EXP_WAK BIT14
+#define EFI_ACPI_6_1_USE_PLATFORM_CLOCK BIT15
+#define EFI_ACPI_6_1_S4_RTC_STS_VALID BIT16
+#define EFI_ACPI_6_1_REMOTE_POWER_ON_CAPABLE BIT17
+#define EFI_ACPI_6_1_FORCE_APIC_CLUSTER_MODEL BIT18
+#define EFI_ACPI_6_1_FORCE_APIC_PHYSICAL_DESTINATION_MODE BIT19
+#define EFI_ACPI_6_1_HW_REDUCED_ACPI BIT20
+#define EFI_ACPI_6_1_LOW_POWER_S0_IDLE_CAPABLE BIT21
+
+///
+/// Firmware ACPI Control Structure
+///
+typedef struct {
+ UINT32 Signature;
+ UINT32 Length;
+ UINT32 HardwareSignature;
+ UINT32 FirmwareWakingVector;
+ UINT32 GlobalLock;
+ UINT32 Flags;
+ UINT64 XFirmwareWakingVector;
+ UINT8 Version;
+ UINT8 Reserved0[3];
+ UINT32 OspmFlags;
+ UINT8 Reserved1[24];
+} EFI_ACPI_6_1_FIRMWARE_ACPI_CONTROL_STRUCTURE;
+
+///
+/// FACS Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION 0x02
+
+///
+/// Firmware Control Structure Feature Flags
+/// All other bits are reserved and must be set to 0.
+///
+#define EFI_ACPI_6_1_S4BIOS_F BIT0
+#define EFI_ACPI_6_1_64BIT_WAKE_SUPPORTED_F BIT1
+
+///
+/// OSPM Enabled Firmware Control Structure Flags
+/// All other bits are reserved and must be set to 0.
+///
+#define EFI_ACPI_6_1_OSPM_64BIT_WAKE_F BIT0
+
+//
+// Differentiated System Description Table,
+// Secondary System Description Table
+// and Persistent System Description Table,
+// no definition needed as they are common description table header, the same with
+// EFI_ACPI_DESCRIPTION_HEADER, followed by a definition block.
+//
+#define EFI_ACPI_6_1_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_REVISION 0x02
+#define EFI_ACPI_6_1_SECONDARY_SYSTEM_DESCRIPTION_TABLE_REVISION 0x02
+
+///
+/// Multiple APIC Description Table header definition. The rest of the table
+/// must be defined in a platform specific manner.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 LocalApicAddress;
+ UINT32 Flags;
+} EFI_ACPI_6_1_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER;
+
+///
+/// MADT Revision (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION 0x04
+
+///
+/// Multiple APIC Flags
+/// All other bits are reserved and must be set to 0.
+///
+#define EFI_ACPI_6_1_PCAT_COMPAT BIT0
+
+//
+// Multiple APIC Description Table APIC structure types
+// All other values between 0x0D and 0x7F are reserved and
+// will be ignored by OSPM. 0x80 ~ 0xFF are reserved for OEM.
+//
+#define EFI_ACPI_6_1_PROCESSOR_LOCAL_APIC 0x00
+#define EFI_ACPI_6_1_IO_APIC 0x01
+#define EFI_ACPI_6_1_INTERRUPT_SOURCE_OVERRIDE 0x02
+#define EFI_ACPI_6_1_NON_MASKABLE_INTERRUPT_SOURCE 0x03
+#define EFI_ACPI_6_1_LOCAL_APIC_NMI 0x04
+#define EFI_ACPI_6_1_LOCAL_APIC_ADDRESS_OVERRIDE 0x05
+#define EFI_ACPI_6_1_IO_SAPIC 0x06
+#define EFI_ACPI_6_1_LOCAL_SAPIC 0x07
+#define EFI_ACPI_6_1_PLATFORM_INTERRUPT_SOURCES 0x08
+#define EFI_ACPI_6_1_PROCESSOR_LOCAL_X2APIC 0x09
+#define EFI_ACPI_6_1_LOCAL_X2APIC_NMI 0x0A
+#define EFI_ACPI_6_1_GIC 0x0B
+#define EFI_ACPI_6_1_GICD 0x0C
+#define EFI_ACPI_6_1_GIC_MSI_FRAME 0x0D
+#define EFI_ACPI_6_1_GICR 0x0E
+#define EFI_ACPI_6_1_GIC_ITS 0x0F
+
+//
+// APIC Structure Definitions
+//
+
+///
+/// Processor Local APIC Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 AcpiProcessorUid;
+ UINT8 ApicId;
+ UINT32 Flags;
+} EFI_ACPI_6_1_PROCESSOR_LOCAL_APIC_STRUCTURE;
+
+///
+/// Local APIC Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_LOCAL_APIC_ENABLED BIT0
+
+///
+/// IO APIC Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 IoApicId;
+ UINT8 Reserved;
+ UINT32 IoApicAddress;
+ UINT32 GlobalSystemInterruptBase;
+} EFI_ACPI_6_1_IO_APIC_STRUCTURE;
+
+///
+/// Interrupt Source Override Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 Bus;
+ UINT8 Source;
+ UINT32 GlobalSystemInterrupt;
+ UINT16 Flags;
+} EFI_ACPI_6_1_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE;
+
+///
+/// Platform Interrupt Sources Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Flags;
+ UINT8 InterruptType;
+ UINT8 ProcessorId;
+ UINT8 ProcessorEid;
+ UINT8 IoSapicVector;
+ UINT32 GlobalSystemInterrupt;
+ UINT32 PlatformInterruptSourceFlags;
+ UINT8 CpeiProcessorOverride;
+ UINT8 Reserved[31];
+} EFI_ACPI_6_1_PLATFORM_INTERRUPT_APIC_STRUCTURE;
+
+//
+// MPS INTI flags.
+// All other bits are reserved and must be set to 0.
+//
+#define EFI_ACPI_6_1_POLARITY (3 << 0)
+#define EFI_ACPI_6_1_TRIGGER_MODE (3 << 2)
+
+///
+/// Non-Maskable Interrupt Source Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Flags;
+ UINT32 GlobalSystemInterrupt;
+} EFI_ACPI_6_1_NON_MASKABLE_INTERRUPT_SOURCE_STRUCTURE;
+
+///
+/// Local APIC NMI Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 AcpiProcessorUid;
+ UINT16 Flags;
+ UINT8 LocalApicLint;
+} EFI_ACPI_6_1_LOCAL_APIC_NMI_STRUCTURE;
+
+///
+/// Local APIC Address Override Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Reserved;
+ UINT64 LocalApicAddress;
+} EFI_ACPI_6_1_LOCAL_APIC_ADDRESS_OVERRIDE_STRUCTURE;
+
+///
+/// IO SAPIC Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 IoApicId;
+ UINT8 Reserved;
+ UINT32 GlobalSystemInterruptBase;
+ UINT64 IoSapicAddress;
+} EFI_ACPI_6_1_IO_SAPIC_STRUCTURE;
+
+///
+/// Local SAPIC Structure
+/// This struct followed by a null-terminated ASCII string - ACPI Processor UID String
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 AcpiProcessorId;
+ UINT8 LocalSapicId;
+ UINT8 LocalSapicEid;
+ UINT8 Reserved[3];
+ UINT32 Flags;
+ UINT32 ACPIProcessorUIDValue;
+} EFI_ACPI_6_1_PROCESSOR_LOCAL_SAPIC_STRUCTURE;
+
+///
+/// Platform Interrupt Sources Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Flags;
+ UINT8 InterruptType;
+ UINT8 ProcessorId;
+ UINT8 ProcessorEid;
+ UINT8 IoSapicVector;
+ UINT32 GlobalSystemInterrupt;
+ UINT32 PlatformInterruptSourceFlags;
+} EFI_ACPI_6_1_PLATFORM_INTERRUPT_SOURCES_STRUCTURE;
+
+///
+/// Platform Interrupt Source Flags.
+/// All other bits are reserved and must be set to 0.
+///
+#define EFI_ACPI_6_1_CPEI_PROCESSOR_OVERRIDE BIT0
+
+///
+/// Processor Local x2APIC Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 Reserved[2];
+ UINT32 X2ApicId;
+ UINT32 Flags;
+ UINT32 AcpiProcessorUid;
+} EFI_ACPI_6_1_PROCESSOR_LOCAL_X2APIC_STRUCTURE;
+
+///
+/// Local x2APIC NMI Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Flags;
+ UINT32 AcpiProcessorUid;
+ UINT8 LocalX2ApicLint;
+ UINT8 Reserved[3];
+} EFI_ACPI_6_1_LOCAL_X2APIC_NMI_STRUCTURE;
+
+///
+/// GIC Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Reserved;
+ UINT32 CPUInterfaceNumber;
+ UINT32 AcpiProcessorUid;
+ UINT32 Flags;
+ UINT32 ParkingProtocolVersion;
+ UINT32 PerformanceInterruptGsiv;
+ UINT64 ParkedAddress;
+ UINT64 PhysicalBaseAddress;
+ UINT64 GICV;
+ UINT64 GICH;
+ UINT32 VGICMaintenanceInterrupt;
+ UINT64 GICRBaseAddress;
+ UINT64 MPIDR;
+ UINT8 ProcessorPowerEfficiencyClass;
+ UINT8 Reserved2[3];
+} EFI_ACPI_6_1_GIC_STRUCTURE;
+
+///
+/// GIC Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_GIC_ENABLED BIT0
+#define EFI_ACPI_6_1_PERFORMANCE_INTERRUPT_MODEL BIT1
+#define EFI_ACPI_6_1_VGIC_MAINTENANCE_INTERRUPT_MODE_FLAGS BIT2
+
+///
+/// GIC Distributor Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Reserved1;
+ UINT32 GicId;
+ UINT64 PhysicalBaseAddress;
+ UINT32 SystemVectorBase;
+ UINT8 GicVersion;
+ UINT8 Reserved2[3];
+} EFI_ACPI_6_1_GIC_DISTRIBUTOR_STRUCTURE;
+
+///
+/// GIC Version
+///
+#define EFI_ACPI_6_1_GIC_V1 0x01
+#define EFI_ACPI_6_1_GIC_V2 0x02
+#define EFI_ACPI_6_1_GIC_V3 0x03
+#define EFI_ACPI_6_1_GIC_V4 0x04
+
+///
+/// GIC MSI Frame Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Reserved1;
+ UINT32 GicMsiFrameId;
+ UINT64 PhysicalBaseAddress;
+ UINT32 Flags;
+ UINT16 SPICount;
+ UINT16 SPIBase;
+} EFI_ACPI_6_1_GIC_MSI_FRAME_STRUCTURE;
+
+///
+/// GIC MSI Frame Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_SPI_COUNT_BASE_SELECT BIT0
+
+///
+/// GICR Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Reserved;
+ UINT64 DiscoveryRangeBaseAddress;
+ UINT32 DiscoveryRangeLength;
+} EFI_ACPI_6_1_GICR_STRUCTURE;
+
+///
+/// GIC Interrupt Translation Service Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT16 Reserved;
+ UINT32 GicItsId;
+ UINT64 PhysicalBaseAddress;
+ UINT32 Reserved2;
+} EFI_ACPI_6_1_GIC_ITS_STRUCTURE;
+
+///
+/// Smart Battery Description Table (SBST)
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 WarningEnergyLevel;
+ UINT32 LowEnergyLevel;
+ UINT32 CriticalEnergyLevel;
+} EFI_ACPI_6_1_SMART_BATTERY_DESCRIPTION_TABLE;
+
+///
+/// SBST Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_SMART_BATTERY_DESCRIPTION_TABLE_REVISION 0x01
+
+///
+/// Embedded Controller Boot Resources Table (ECDT)
+/// The table is followed by a null terminated ASCII string that contains
+/// a fully qualified reference to the name space object.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE EcControl;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE EcData;
+ UINT32 Uid;
+ UINT8 GpeBit;
+} EFI_ACPI_6_1_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE;
+
+///
+/// ECDT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE_REVISION 0x01
+
+///
+/// System Resource Affinity Table (SRAT). The rest of the table
+/// must be defined in a platform specific manner.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 Reserved1; ///< Must be set to 1
+ UINT64 Reserved2;
+} EFI_ACPI_6_1_SYSTEM_RESOURCE_AFFINITY_TABLE_HEADER;
+
+///
+/// SRAT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_SYSTEM_RESOURCE_AFFINITY_TABLE_REVISION 0x03
+
+//
+// SRAT structure types.
+// All other values between 0x04 an 0xFF are reserved and
+// will be ignored by OSPM.
+//
+#define EFI_ACPI_6_1_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY 0x00
+#define EFI_ACPI_6_1_MEMORY_AFFINITY 0x01
+#define EFI_ACPI_6_1_PROCESSOR_LOCAL_X2APIC_AFFINITY 0x02
+#define EFI_ACPI_6_1_GICC_AFFINITY 0x03
+
+///
+/// Processor Local APIC/SAPIC Affinity Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 ProximityDomain7To0;
+ UINT8 ApicId;
+ UINT32 Flags;
+ UINT8 LocalSapicEid;
+ UINT8 ProximityDomain31To8[3];
+ UINT32 ClockDomain;
+} EFI_ACPI_6_1_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY_STRUCTURE;
+
+///
+/// Local APIC/SAPIC Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_PROCESSOR_LOCAL_APIC_SAPIC_ENABLED (1 << 0)
+
+///
+/// Memory Affinity Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT32 ProximityDomain;
+ UINT16 Reserved1;
+ UINT32 AddressBaseLow;
+ UINT32 AddressBaseHigh;
+ UINT32 LengthLow;
+ UINT32 LengthHigh;
+ UINT32 Reserved2;
+ UINT32 Flags;
+ UINT64 Reserved3;
+} EFI_ACPI_6_1_MEMORY_AFFINITY_STRUCTURE;
+
+//
+// Memory Flags. All other bits are reserved and must be 0.
+//
+#define EFI_ACPI_6_1_MEMORY_ENABLED (1 << 0)
+#define EFI_ACPI_6_1_MEMORY_HOT_PLUGGABLE (1 << 1)
+#define EFI_ACPI_6_1_MEMORY_NONVOLATILE (1 << 2)
+
+///
+/// Processor Local x2APIC Affinity Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 Reserved1[2];
+ UINT32 ProximityDomain;
+ UINT32 X2ApicId;
+ UINT32 Flags;
+ UINT32 ClockDomain;
+ UINT8 Reserved2[4];
+} EFI_ACPI_6_1_PROCESSOR_LOCAL_X2APIC_AFFINITY_STRUCTURE;
+
+///
+/// GICC Affinity Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT32 ProximityDomain;
+ UINT32 AcpiProcessorUid;
+ UINT32 Flags;
+ UINT32 ClockDomain;
+} EFI_ACPI_6_1_GICC_AFFINITY_STRUCTURE;
+
+///
+/// GICC Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_GICC_ENABLED (1 << 0)
+
+///
+/// System Locality Distance Information Table (SLIT).
+/// The rest of the table is a matrix.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT64 NumberOfSystemLocalities;
+} EFI_ACPI_6_1_SYSTEM_LOCALITY_DISTANCE_INFORMATION_TABLE_HEADER;
+
+///
+/// SLIT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_SYSTEM_LOCALITY_DISTANCE_INFORMATION_TABLE_REVISION 0x01
+
+///
+/// Corrected Platform Error Polling Table (CPEP)
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT8 Reserved[8];
+} EFI_ACPI_6_1_CORRECTED_PLATFORM_ERROR_POLLING_TABLE_HEADER;
+
+///
+/// CPEP Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_CORRECTED_PLATFORM_ERROR_POLLING_TABLE_REVISION 0x01
+
+//
+// CPEP processor structure types.
+//
+#define EFI_ACPI_6_1_CPEP_PROCESSOR_APIC_SAPIC 0x00
+
+///
+/// Corrected Platform Error Polling Processor Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 ProcessorId;
+ UINT8 ProcessorEid;
+ UINT32 PollingInterval;
+} EFI_ACPI_6_1_CPEP_PROCESSOR_APIC_SAPIC_STRUCTURE;
+
+///
+/// Maximum System Characteristics Table (MSCT)
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 OffsetProxDomInfo;
+ UINT32 MaximumNumberOfProximityDomains;
+ UINT32 MaximumNumberOfClockDomains;
+ UINT64 MaximumPhysicalAddress;
+} EFI_ACPI_6_1_MAXIMUM_SYSTEM_CHARACTERISTICS_TABLE_HEADER;
+
+///
+/// MSCT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_MAXIMUM_SYSTEM_CHARACTERISTICS_TABLE_REVISION 0x01
+
+///
+/// Maximum Proximity Domain Information Structure Definition
+///
+typedef struct {
+ UINT8 Revision;
+ UINT8 Length;
+ UINT32 ProximityDomainRangeLow;
+ UINT32 ProximityDomainRangeHigh;
+ UINT32 MaximumProcessorCapacity;
+ UINT64 MaximumMemoryCapacity;
+} EFI_ACPI_6_1_MAXIMUM_PROXIMITY_DOMAIN_INFORMATION_STRUCTURE;
+
+///
+/// ACPI RAS Feature Table definition.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT8 PlatformCommunicationChannelIdentifier[12];
+} EFI_ACPI_6_1_RAS_FEATURE_TABLE;
+
+///
+/// RASF Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_RAS_FEATURE_TABLE_REVISION 0x01
+
+///
+/// ACPI RASF Platform Communication Channel Shared Memory Region definition.
+///
+typedef struct {
+ UINT32 Signature;
+ UINT16 Command;
+ UINT16 Status;
+ UINT16 Version;
+ UINT8 RASCapabilities[16];
+ UINT8 SetRASCapabilities[16];
+ UINT16 NumberOfRASFParameterBlocks;
+ UINT32 SetRASCapabilitiesStatus;
+} EFI_ACPI_6_1_RASF_PLATFORM_COMMUNICATION_CHANNEL_SHARED_MEMORY_REGION;
+
+///
+/// ACPI RASF PCC command code
+///
+#define EFI_ACPI_6_1_RASF_PCC_COMMAND_CODE_EXECUTE_RASF_COMMAND 0x01
+
+///
+/// ACPI RASF Platform RAS Capabilities
+///
+#define EFI_ACPI_6_1_RASF_PLATFORM_RAS_CAPABILITY_HARDWARE_BASED_PATROL_SCRUB_SUPPOTED 0x01
+#define EFI_ACPI_6_1_RASF_PLATFORM_RAS_CAPABILITY_HARDWARE_BASED_PATROL_SCRUB_SUPPOTED_AND_EXPOSED_TO_SOFTWARE 0x02
+
+///
+/// ACPI RASF Parameter Block structure for PATROL_SCRUB
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 Version;
+ UINT16 Length;
+ UINT16 PatrolScrubCommand;
+ UINT64 RequestedAddressRange[2];
+ UINT64 ActualAddressRange[2];
+ UINT16 Flags;
+ UINT8 RequestedSpeed;
+} EFI_ACPI_6_1_RASF_PATROL_SCRUB_PLATFORM_BLOCK_STRUCTURE;
+
+///
+/// ACPI RASF Patrol Scrub command
+///
+#define EFI_ACPI_6_1_RASF_PATROL_SCRUB_COMMAND_GET_PATROL_PARAMETERS 0x01
+#define EFI_ACPI_6_1_RASF_PATROL_SCRUB_COMMAND_START_PATROL_SCRUBBER 0x02
+#define EFI_ACPI_6_1_RASF_PATROL_SCRUB_COMMAND_STOP_PATROL_SCRUBBER 0x03
+
+///
+/// Memory Power State Table definition.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT8 PlatformCommunicationChannelIdentifier;
+ UINT8 Reserved[3];
+ // Memory Power Node Structure
+ // Memory Power State Characteristics
+} EFI_ACPI_6_1_MEMORY_POWER_STATUS_TABLE;
+
+///
+/// MPST Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_MEMORY_POWER_STATE_TABLE_REVISION 0x01
+
+///
+/// MPST Platform Communication Channel Shared Memory Region definition.
+///
+typedef struct {
+ UINT32 Signature;
+ UINT16 Command;
+ UINT16 Status;
+ UINT32 MemoryPowerCommandRegister;
+ UINT32 MemoryPowerStatusRegister;
+ UINT32 PowerStateId;
+ UINT32 MemoryPowerNodeId;
+ UINT64 MemoryEnergyConsumed;
+ UINT64 ExpectedAveragePowerComsuned;
+} EFI_ACPI_6_1_MPST_PLATFORM_COMMUNICATION_CHANNEL_SHARED_MEMORY_REGION;
+
+///
+/// ACPI MPST PCC command code
+///
+#define EFI_ACPI_6_1_MPST_PCC_COMMAND_CODE_EXECUTE_MPST_COMMAND 0x03
+
+///
+/// ACPI MPST Memory Power command
+///
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_COMMAND_GET_MEMORY_POWER_STATE 0x01
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_COMMAND_SET_MEMORY_POWER_STATE 0x02
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_COMMAND_GET_AVERAGE_POWER_CONSUMED 0x03
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_COMMAND_GET_MEMORY_ENERGY_CONSUMED 0x04
+
+///
+/// MPST Memory Power Node Table
+///
+typedef struct {
+ UINT8 PowerStateValue;
+ UINT8 PowerStateInformationIndex;
+} EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE;
+
+typedef struct {
+ UINT8 Flag;
+ UINT8 Reserved;
+ UINT16 MemoryPowerNodeId;
+ UINT32 Length;
+ UINT64 AddressBase;
+ UINT64 AddressLength;
+ UINT32 NumberOfPowerStates;
+ UINT32 NumberOfPhysicalComponents;
+ // EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE MemoryPowerState[NumberOfPowerStates];
+ // UINT16 PhysicalComponentIdentifier[NumberOfPhysicalComponents];
+} EFI_ACPI_6_1_MPST_MEMORY_POWER_STRUCTURE;
+
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_STRUCTURE_FLAG_ENABLE 0x01
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_STRUCTURE_FLAG_POWER_MANAGED 0x02
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_STRUCTURE_FLAG_HOT_PLUGGABLE 0x04
+
+typedef struct {
+ UINT16 MemoryPowerNodeCount;
+ UINT8 Reserved[2];
+} EFI_ACPI_6_1_MPST_MEMORY_POWER_NODE_TABLE;
+
+///
+/// MPST Memory Power State Characteristics Table
+///
+typedef struct {
+ UINT8 PowerStateStructureID;
+ UINT8 Flag;
+ UINT16 Reserved;
+ UINT32 AveragePowerConsumedInMPS0;
+ UINT32 RelativePowerSavingToMPS0;
+ UINT64 ExitLatencyToMPS0;
+} EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE_CHARACTERISTICS_STRUCTURE;
+
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE_CHARACTERISTICS_STRUCTURE_FLAG_MEMORY_CONTENT_PRESERVED 0x01
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE_CHARACTERISTICS_STRUCTURE_FLAG_AUTONOMOUS_MEMORY_POWER_STATE_ENTRY 0x02
+#define EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE_CHARACTERISTICS_STRUCTURE_FLAG_AUTONOMOUS_MEMORY_POWER_STATE_EXIT 0x04
+
+typedef struct {
+ UINT16 MemoryPowerStateCharacteristicsCount;
+ UINT8 Reserved[2];
+} EFI_ACPI_6_1_MPST_MEMORY_POWER_STATE_CHARACTERISTICS_TABLE;
+
+///
+/// Memory Topology Table definition.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 Reserved;
+} EFI_ACPI_6_1_MEMORY_TOPOLOGY_TABLE;
+
+///
+/// PMTT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_MEMORY_TOPOLOGY_TABLE_REVISION 0x01
+
+///
+/// Common Memory Aggregator Device Structure.
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Reserved;
+ UINT16 Length;
+ UINT16 Flags;
+ UINT16 Reserved1;
+} EFI_ACPI_6_1_PMMT_COMMON_MEMORY_AGGREGATOR_DEVICE_STRUCTURE;
+
+///
+/// Memory Aggregator Device Type
+///
+#define EFI_ACPI_6_1_PMMT_MEMORY_AGGREGATOR_DEVICE_TYPE_SOCKET 0x0
+#define EFI_ACPI_6_1_PMMT_MEMORY_AGGREGATOR_DEVICE_TYPE_MEMORY_CONTROLLER 0x1
+#define EFI_ACPI_6_1_PMMT_MEMORY_AGGREGATOR_DEVICE_TYPE_DIMM 0x2
+
+///
+/// Socket Memory Aggregator Device Structure.
+///
+typedef struct {
+ EFI_ACPI_6_1_PMMT_COMMON_MEMORY_AGGREGATOR_DEVICE_STRUCTURE Header;
+ UINT16 SocketIdentifier;
+ UINT16 Reserved;
+ // EFI_ACPI_6_1_PMMT_MEMORY_CONTROLLER_MEMORY_AGGREGATOR_DEVICE_STRUCTURE MemoryController[];
+} EFI_ACPI_6_1_PMMT_SOCKET_MEMORY_AGGREGATOR_DEVICE_STRUCTURE;
+
+///
+/// MemoryController Memory Aggregator Device Structure.
+///
+typedef struct {
+ EFI_ACPI_6_1_PMMT_COMMON_MEMORY_AGGREGATOR_DEVICE_STRUCTURE Header;
+ UINT32 ReadLatency;
+ UINT32 WriteLatency;
+ UINT32 ReadBandwidth;
+ UINT32 WriteBandwidth;
+ UINT16 OptimalAccessUnit;
+ UINT16 OptimalAccessAlignment;
+ UINT16 Reserved;
+ UINT16 NumberOfProximityDomains;
+ // UINT32 ProximityDomain[NumberOfProximityDomains];
+ // EFI_ACPI_6_1_PMMT_DIMM_MEMORY_AGGREGATOR_DEVICE_STRUCTURE PhysicalComponent[];
+} EFI_ACPI_6_1_PMMT_MEMORY_CONTROLLER_MEMORY_AGGREGATOR_DEVICE_STRUCTURE;
+
+///
+/// DIMM Memory Aggregator Device Structure.
+///
+typedef struct {
+ EFI_ACPI_6_1_PMMT_COMMON_MEMORY_AGGREGATOR_DEVICE_STRUCTURE Header;
+ UINT16 PhysicalComponentIdentifier;
+ UINT16 Reserved;
+ UINT32 SizeOfDimm;
+ UINT32 SmbiosHandle;
+} EFI_ACPI_6_1_PMMT_DIMM_MEMORY_AGGREGATOR_DEVICE_STRUCTURE;
+
+///
+/// Boot Graphics Resource Table definition.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ ///
+ /// 2-bytes (16 bit) version ID. This value must be 1.
+ ///
+ UINT16 Version;
+ ///
+ /// 1-byte status field indicating current status about the table.
+ /// Bits[7:1] = Reserved (must be zero)
+ /// Bit [0] = Valid. A one indicates the boot image graphic is valid.
+ ///
+ UINT8 Status;
+ ///
+ /// 1-byte enumerated type field indicating format of the image.
+ /// 0 = Bitmap
+ /// 1 - 255 Reserved (for future use)
+ ///
+ UINT8 ImageType;
+ ///
+ /// 8-byte (64 bit) physical address pointing to the firmware's in-memory copy
+ /// of the image bitmap.
+ ///
+ UINT64 ImageAddress;
+ ///
+ /// A 4-byte (32-bit) unsigned long describing the display X-offset of the boot image.
+ /// (X, Y) display offset of the top left corner of the boot image.
+ /// The top left corner of the display is at offset (0, 0).
+ ///
+ UINT32 ImageOffsetX;
+ ///
+ /// A 4-byte (32-bit) unsigned long describing the display Y-offset of the boot image.
+ /// (X, Y) display offset of the top left corner of the boot image.
+ /// The top left corner of the display is at offset (0, 0).
+ ///
+ UINT32 ImageOffsetY;
+} EFI_ACPI_6_1_BOOT_GRAPHICS_RESOURCE_TABLE;
+
+///
+/// BGRT Revision
+///
+#define EFI_ACPI_6_1_BOOT_GRAPHICS_RESOURCE_TABLE_REVISION 1
+
+///
+/// BGRT Version
+///
+#define EFI_ACPI_6_1_BGRT_VERSION 0x01
+
+///
+/// BGRT Status
+///
+#define EFI_ACPI_6_1_BGRT_STATUS_NOT_DISPLAYED 0x00
+#define EFI_ACPI_6_1_BGRT_STATUS_DISPLAYED 0x01
+
+///
+/// BGRT Image Type
+///
+#define EFI_ACPI_6_1_BGRT_IMAGE_TYPE_BMP 0x00
+
+///
+/// FPDT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_FIRMWARE_PERFORMANCE_DATA_TABLE_REVISION 0x01
+
+///
+/// FPDT Performance Record Types
+///
+#define EFI_ACPI_6_1_FPDT_RECORD_TYPE_FIRMWARE_BASIC_BOOT_POINTER 0x0000
+#define EFI_ACPI_6_1_FPDT_RECORD_TYPE_S3_PERFORMANCE_TABLE_POINTER 0x0001
+
+///
+/// FPDT Performance Record Revision
+///
+#define EFI_ACPI_6_1_FPDT_RECORD_REVISION_FIRMWARE_BASIC_BOOT_POINTER 0x01
+#define EFI_ACPI_6_1_FPDT_RECORD_REVISION_S3_PERFORMANCE_TABLE_POINTER 0x01
+
+///
+/// FPDT Runtime Performance Record Types
+///
+#define EFI_ACPI_6_1_FPDT_RUNTIME_RECORD_TYPE_S3_RESUME 0x0000
+#define EFI_ACPI_6_1_FPDT_RUNTIME_RECORD_TYPE_S3_SUSPEND 0x0001
+#define EFI_ACPI_6_1_FPDT_RUNTIME_RECORD_TYPE_FIRMWARE_BASIC_BOOT 0x0002
+
+///
+/// FPDT Runtime Performance Record Revision
+///
+#define EFI_ACPI_6_1_FPDT_RUNTIME_RECORD_REVISION_S3_RESUME 0x01
+#define EFI_ACPI_6_1_FPDT_RUNTIME_RECORD_REVISION_S3_SUSPEND 0x01
+#define EFI_ACPI_6_1_FPDT_RUNTIME_RECORD_REVISION_FIRMWARE_BASIC_BOOT 0x02
+
+///
+/// FPDT Performance Record header
+///
+typedef struct {
+ UINT16 Type;
+ UINT8 Length;
+ UINT8 Revision;
+} EFI_ACPI_6_1_FPDT_PERFORMANCE_RECORD_HEADER;
+
+///
+/// FPDT Performance Table header
+///
+typedef struct {
+ UINT32 Signature;
+ UINT32 Length;
+} EFI_ACPI_6_1_FPDT_PERFORMANCE_TABLE_HEADER;
+
+///
+/// FPDT Firmware Basic Boot Performance Pointer Record Structure
+///
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_RECORD_HEADER Header;
+ UINT32 Reserved;
+ ///
+ /// 64-bit processor-relative physical address of the Basic Boot Performance Table.
+ ///
+ UINT64 BootPerformanceTablePointer;
+} EFI_ACPI_6_1_FPDT_BOOT_PERFORMANCE_TABLE_POINTER_RECORD;
+
+///
+/// FPDT S3 Performance Table Pointer Record Structure
+///
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_RECORD_HEADER Header;
+ UINT32 Reserved;
+ ///
+ /// 64-bit processor-relative physical address of the S3 Performance Table.
+ ///
+ UINT64 S3PerformanceTablePointer;
+} EFI_ACPI_6_1_FPDT_S3_PERFORMANCE_TABLE_POINTER_RECORD;
+
+///
+/// FPDT Firmware Basic Boot Performance Record Structure
+///
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_RECORD_HEADER Header;
+ UINT32 Reserved;
+ ///
+ /// Timer value logged at the beginning of firmware image execution.
+ /// This may not always be zero or near zero.
+ ///
+ UINT64 ResetEnd;
+ ///
+ /// Timer value logged just prior to loading the OS boot loader into memory.
+ /// For non-UEFI compatible boots, this field must be zero.
+ ///
+ UINT64 OsLoaderLoadImageStart;
+ ///
+ /// Timer value logged just prior to launching the previously loaded OS boot loader image.
+ /// For non-UEFI compatible boots, the timer value logged will be just prior
+ /// to the INT 19h handler invocation.
+ ///
+ UINT64 OsLoaderStartImageStart;
+ ///
+ /// Timer value logged at the point when the OS loader calls the
+ /// ExitBootServices function for UEFI compatible firmware.
+ /// For non-UEFI compatible boots, this field must be zero.
+ ///
+ UINT64 ExitBootServicesEntry;
+ ///
+ /// Timer value logged at the point just prior to when the OS loader gaining
+ /// control back from calls the ExitBootServices function for UEFI compatible firmware.
+ /// For non-UEFI compatible boots, this field must be zero.
+ ///
+ UINT64 ExitBootServicesExit;
+} EFI_ACPI_6_1_FPDT_FIRMWARE_BASIC_BOOT_RECORD;
+
+///
+/// FPDT Firmware Basic Boot Performance Table signature
+///
+#define EFI_ACPI_6_1_FPDT_BOOT_PERFORMANCE_TABLE_SIGNATURE SIGNATURE_32('F', 'B', 'P', 'T')
+
+//
+// FPDT Firmware Basic Boot Performance Table
+//
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_TABLE_HEADER Header;
+ //
+ // one or more Performance Records.
+ //
+} EFI_ACPI_6_1_FPDT_FIRMWARE_BASIC_BOOT_TABLE;
+
+///
+/// FPDT "S3PT" S3 Performance Table
+///
+#define EFI_ACPI_6_1_FPDT_S3_PERFORMANCE_TABLE_SIGNATURE SIGNATURE_32('S', '3', 'P', 'T')
+
+//
+// FPDT Firmware S3 Boot Performance Table
+//
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_TABLE_HEADER Header;
+ //
+ // one or more Performance Records.
+ //
+} EFI_ACPI_6_1_FPDT_FIRMWARE_S3_BOOT_TABLE;
+
+///
+/// FPDT Basic S3 Resume Performance Record
+///
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_RECORD_HEADER Header;
+ ///
+ /// A count of the number of S3 resume cycles since the last full boot sequence.
+ ///
+ UINT32 ResumeCount;
+ ///
+ /// Timer recorded at the end of BIOS S3 resume, just prior to handoff to the
+ /// OS waking vector. Only the most recent resume cycle's time is retained.
+ ///
+ UINT64 FullResume;
+ ///
+ /// Average timer value of all resume cycles logged since the last full boot
+ /// sequence, including the most recent resume. Note that the entire log of
+ /// timer values does not need to be retained in order to calculate this average.
+ ///
+ UINT64 AverageResume;
+} EFI_ACPI_6_1_FPDT_S3_RESUME_RECORD;
+
+///
+/// FPDT Basic S3 Suspend Performance Record
+///
+typedef struct {
+ EFI_ACPI_6_1_FPDT_PERFORMANCE_RECORD_HEADER Header;
+ ///
+ /// Timer value recorded at the OS write to SLP_TYP upon entry to S3.
+ /// Only the most recent suspend cycle's timer value is retained.
+ ///
+ UINT64 SuspendStart;
+ ///
+ /// Timer value recorded at the final firmware write to SLP_TYP (or other
+ /// mechanism) used to trigger hardware entry to S3.
+ /// Only the most recent suspend cycle's timer value is retained.
+ ///
+ UINT64 SuspendEnd;
+} EFI_ACPI_6_1_FPDT_S3_SUSPEND_RECORD;
+
+///
+/// Firmware Performance Record Table definition.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+} EFI_ACPI_6_1_FIRMWARE_PERFORMANCE_RECORD_TABLE;
+
+///
+/// Generic Timer Description Table definition.
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT64 CntControlBasePhysicalAddress;
+ UINT32 Reserved;
+ UINT32 SecurePL1TimerGSIV;
+ UINT32 SecurePL1TimerFlags;
+ UINT32 NonSecurePL1TimerGSIV;
+ UINT32 NonSecurePL1TimerFlags;
+ UINT32 VirtualTimerGSIV;
+ UINT32 VirtualTimerFlags;
+ UINT32 NonSecurePL2TimerGSIV;
+ UINT32 NonSecurePL2TimerFlags;
+ UINT64 CntReadBasePhysicalAddress;
+ UINT32 PlatformTimerCount;
+ UINT32 PlatformTimerOffset;
+} EFI_ACPI_6_1_GENERIC_TIMER_DESCRIPTION_TABLE;
+
+///
+/// GTDT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION 0x02
+
+///
+/// Timer Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE BIT0
+#define EFI_ACPI_6_1_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY BIT1
+#define EFI_ACPI_6_1_GTDT_TIMER_FLAG_ALWAYS_ON_CAPABILITY BIT2
+
+///
+/// Platform Timer Type
+///
+#define EFI_ACPI_6_1_GTDT_GT_BLOCK 0
+#define EFI_ACPI_6_1_GTDT_SBSA_GENERIC_WATCHDOG 1
+
+///
+/// GT Block Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT16 Length;
+ UINT8 Reserved;
+ UINT64 CntCtlBase;
+ UINT32 GTBlockTimerCount;
+ UINT32 GTBlockTimerOffset;
+} EFI_ACPI_6_1_GTDT_GT_BLOCK_STRUCTURE;
+
+///
+/// GT Block Timer Structure
+///
+typedef struct {
+ UINT8 GTFrameNumber;
+ UINT8 Reserved[3];
+ UINT64 CntBaseX;
+ UINT64 CntEL0BaseX;
+ UINT32 GTxPhysicalTimerGSIV;
+ UINT32 GTxPhysicalTimerFlags;
+ UINT32 GTxVirtualTimerGSIV;
+ UINT32 GTxVirtualTimerFlags;
+ UINT32 GTxCommonFlags;
+} EFI_ACPI_6_1_GTDT_GT_BLOCK_TIMER_STRUCTURE;
+
+///
+/// GT Block Physical Timers and Virtual Timers Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_GTDT_GT_BLOCK_TIMER_FLAG_TIMER_INTERRUPT_MODE BIT0
+#define EFI_ACPI_6_1_GTDT_GT_BLOCK_TIMER_FLAG_TIMER_INTERRUPT_POLARITY BIT1
+
+///
+/// Common Flags Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_GTDT_GT_BLOCK_COMMON_FLAG_SECURE_TIMER BIT0
+#define EFI_ACPI_6_1_GTDT_GT_BLOCK_COMMON_FLAG_ALWAYS_ON_CAPABILITY BIT1
+
+///
+/// SBSA Generic Watchdog Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT16 Length;
+ UINT8 Reserved;
+ UINT64 RefreshFramePhysicalAddress;
+ UINT64 WatchdogControlFramePhysicalAddress;
+ UINT32 WatchdogTimerGSIV;
+ UINT32 WatchdogTimerFlags;
+} EFI_ACPI_6_1_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE;
+
+///
+/// SBSA Generic Watchdog Timer Flags. All other bits are reserved and must be 0.
+///
+#define EFI_ACPI_6_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_TIMER_INTERRUPT_MODE BIT0
+#define EFI_ACPI_6_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_TIMER_INTERRUPT_POLARITY BIT1
+#define EFI_ACPI_6_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER BIT2
+
+//
+// NVDIMM Firmware Interface Table definition.
+//
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 Reserved;
+} EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE;
+
+//
+// NFIT Version (as defined in ACPI 6.1 spec.)
+//
+#define EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_REVISION 0x1
+
+//
+// Definition for NFIT Table Structure Types
+//
+#define EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE_TYPE 0
+#define EFI_ACPI_6_1_NFIT_NVDIMM_REGION_MAPPING_STRUCTURE_TYPE 1
+#define EFI_ACPI_6_1_NFIT_INTERLEAVE_STRUCTURE_TYPE 2
+#define EFI_ACPI_6_1_NFIT_SMBIOS_MANAGEMENT_INFORMATION_STRUCTURE_TYPE 3
+#define EFI_ACPI_6_1_NFIT_NVDIMM_CONTROL_REGION_STRUCTURE_TYPE 4
+#define EFI_ACPI_6_1_NFIT_NVDIMM_BLOCK_DATA_WINDOW_REGION_STRUCTURE_TYPE 5
+#define EFI_ACPI_6_1_NFIT_FLUSH_HINT_ADDRESS_STRUCTURE_TYPE 6
+
+//
+// Definition for NFIT Structure Header
+//
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+} EFI_ACPI_6_1_NFIT_STRUCTURE_HEADER;
+
+//
+// Definition for System Physical Address Range Structure
+//
+#define EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_FLAGS_CONTROL_REGION_FOR_MANAGEMENT BIT0
+#define EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_FLAGS_PROXIMITY_DOMAIN_VALID BIT1
+#define EFI_ACPI_6_1_NFIT_GUID_VOLATILE_MEMORY_REGION { 0x7305944F, 0xFDDA, 0x44E3, { 0xB1, 0x6C, 0x3F, 0x22, 0xD2, 0x52, 0xE5, 0xD0 }}
+#define EFI_ACPI_6_1_NFIT_GUID_BYTE_ADDRESSABLE_PERSISTENT_MEMORY_REGION { 0x66F0D379, 0xB4F3, 0x4074, { 0xAC, 0x43, 0x0D, 0x33, 0x18, 0xB7, 0x8C, 0xDB }}
+#define EFI_ACPI_6_1_NFIT_GUID_NVDIMM_CONTROL_REGION { 0x92F701F6, 0x13B4, 0x405D, { 0x91, 0x0B, 0x29, 0x93, 0x67, 0xE8, 0x23, 0x4C }}
+#define EFI_ACPI_6_1_NFIT_GUID_NVDIMM_BLOCK_DATA_WINDOW_REGION { 0x91AF0530, 0x5D86, 0x470E, { 0xA6, 0xB0, 0x0A, 0x2D, 0xB9, 0x40, 0x82, 0x49 }}
+#define EFI_ACPI_6_1_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_DISK_REGION_VOLATILE { 0x77AB535A, 0x45FC, 0x624B, { 0x55, 0x60, 0xF7, 0xB2, 0x81, 0xD1, 0xF9, 0x6E }}
+#define EFI_ACPI_6_1_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_CD_REGION_VOLATILE { 0x3D5ABD30, 0x4175, 0x87CE, { 0x6D, 0x64, 0xD2, 0xAD, 0xE5, 0x23, 0xC4, 0xBB }}
+#define EFI_ACPI_6_1_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_DISK_REGION_PERSISTENT { 0x5CEA02C9, 0x4D07, 0x69D3, { 0x26, 0x9F ,0x44, 0x96, 0xFB, 0xE0, 0x96, 0xF9 }}
+#define EFI_ACPI_6_1_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_CD_REGION_PERSISTENT { 0x08018188, 0x42CD, 0xBB48, { 0x10, 0x0F, 0x53, 0x87, 0xD5, 0x3D, 0xED, 0x3D }}
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ UINT16 SPARangeStructureIndex;
+ UINT16 Flags;
+ UINT32 Reserved_8;
+ UINT32 ProximityDomain;
+ GUID AddressRangeTypeGUID;
+ UINT64 SystemPhysicalAddressRangeBase;
+ UINT64 SystemPhysicalAddressRangeLength;
+ UINT64 AddressRangeMemoryMappingAttribute;
+} EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE;
+
+//
+// Definition for Memory Device to System Physical Address Range Mapping Structure
+//
+typedef struct {
+ UINT32 DIMMNumber : 4;
+ UINT32 MemoryChannelNumber : 4;
+ UINT32 MemoryControllerID : 4;
+ UINT32 SocketID : 4;
+ UINT32 NodeControllerID : 12;
+ UINT32 Reserved_28 : 4;
+} EFI_ACPI_6_1_NFIT_DEVICE_HANDLE;
+
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_PREVIOUS_SAVE_FAIL BIT0
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_LAST_RESTORE_FAIL BIT1
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_PLATFORM_FLUSH_FAIL BIT2
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_NOT_ARMED_PRIOR_TO_OSPM_HAND_OFF BIT3
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_SMART_HEALTH_EVENTS_PRIOR_OSPM_HAND_OFF BIT4
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_FIRMWARE_ENABLED_TO_NOTIFY_OSPM_ON_SMART_HEALTH_EVENTS BIT5
+#define EFI_ACPI_6_1_NFIT_MEMORY_DEVICE_STATE_FLAGS_FIRMWARE_NOT_MAP_NVDIMM_TO_SPA BIT6
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ EFI_ACPI_6_1_NFIT_DEVICE_HANDLE NFITDeviceHandle;
+ UINT16 NVDIMMPhysicalID;
+ UINT16 NVDIMMRegionID;
+ UINT16 SPARangeStructureIndex;
+ UINT16 NVDIMMControlRegionStructureIndex;
+ UINT64 NVDIMMRegionSize;
+ UINT64 RegionOffset;
+ UINT64 NVDIMMPhysicalAddressRegionBase;
+ UINT16 InterleaveStructureIndex;
+ UINT16 InterleaveWays;
+ UINT16 NVDIMMStateFlags;
+ UINT16 Reserved_46;
+} EFI_ACPI_6_1_NFIT_NVDIMM_REGION_MAPPING_STRUCTURE;
+
+//
+// Definition for Interleave Structure
+//
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ UINT16 InterleaveStructureIndex;
+ UINT16 Reserved_6;
+ UINT32 NumberOfLines;
+ UINT32 LineSize;
+ // UINT32 LineOffset[NumberOfLines];
+} EFI_ACPI_6_1_NFIT_INTERLEAVE_STRUCTURE;
+
+//
+// Definition for SMBIOS Management Information Structure
+//
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ UINT32 Reserved_4;
+ // UINT8 Data[];
+} EFI_ACPI_6_1_NFIT_SMBIOS_MANAGEMENT_INFORMATION_STRUCTURE;
+
+//
+// Definition for NVDIMM Control Region Structure
+//
+#define EFI_ACPI_6_1_NFIT_NVDIMM_CONTROL_REGION_VALID_FIELDS_MANUFACTURING BIT0
+
+#define EFI_ACPI_6_1_NFIT_NVDIMM_CONTROL_REGION_FLAGS_BLOCK_DATA_WINDOWS_BUFFERED BIT0
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ UINT16 NVDIMMControlRegionStructureIndex;
+ UINT16 VendorID;
+ UINT16 DeviceID;
+ UINT16 RevisionID;
+ UINT16 SubsystemVendorID;
+ UINT16 SubsystemDeviceID;
+ UINT16 SubsystemRevisionID;
+ UINT8 ValidFields;
+ UINT8 ManufacturingLocation;
+ UINT16 ManufacturingDate;
+ UINT8 Reserved_22[2];
+ UINT32 SerialNumber;
+ UINT16 RegionFormatInterfaceCode;
+ UINT16 NumberOfBlockControlWindows;
+ UINT64 SizeOfBlockControlWindow;
+ UINT64 CommandRegisterOffsetInBlockControlWindow;
+ UINT64 SizeOfCommandRegisterInBlockControlWindows;
+ UINT64 StatusRegisterOffsetInBlockControlWindow;
+ UINT64 SizeOfStatusRegisterInBlockControlWindows;
+ UINT16 NVDIMMControlRegionFlag;
+ UINT8 Reserved_74[6];
+} EFI_ACPI_6_1_NFIT_NVDIMM_CONTROL_REGION_STRUCTURE;
+
+//
+// Definition for NVDIMM Block Data Window Region Structure
+//
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ UINT16 NVDIMMControlRegionStructureIndex;
+ UINT16 NumberOfBlockDataWindows;
+ UINT64 BlockDataWindowStartOffset;
+ UINT64 SizeOfBlockDataWindow;
+ UINT64 BlockAccessibleMemoryCapacity;
+ UINT64 BeginningAddressOfFirstBlockInBlockAccessibleMemory;
+} EFI_ACPI_6_1_NFIT_NVDIMM_BLOCK_DATA_WINDOW_REGION_STRUCTURE;
+
+//
+// Definition for Flush Hint Address Structure
+//
+typedef struct {
+ UINT16 Type;
+ UINT16 Length;
+ EFI_ACPI_6_1_NFIT_DEVICE_HANDLE NFITDeviceHandle;
+ UINT16 NumberOfFlushHintAddresses;
+ UINT8 Reserved_10[6];
+ // UINT64 FlushHintAddress[NumberOfFlushHintAddresses];
+} EFI_ACPI_6_1_NFIT_FLUSH_HINT_ADDRESS_STRUCTURE;
+
+///
+/// Boot Error Record Table (BERT)
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 BootErrorRegionLength;
+ UINT64 BootErrorRegion;
+} EFI_ACPI_6_1_BOOT_ERROR_RECORD_TABLE_HEADER;
+
+///
+/// BERT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_BOOT_ERROR_RECORD_TABLE_REVISION 0x01
+
+///
+/// Boot Error Region Block Status Definition
+///
+typedef struct {
+ UINT32 UncorrectableErrorValid : 1;
+ UINT32 CorrectableErrorValid : 1;
+ UINT32 MultipleUncorrectableErrors : 1;
+ UINT32 MultipleCorrectableErrors : 1;
+ UINT32 ErrorDataEntryCount : 10;
+ UINT32 Reserved : 18;
+} EFI_ACPI_6_1_ERROR_BLOCK_STATUS;
+
+///
+/// Boot Error Region Definition
+///
+typedef struct {
+ EFI_ACPI_6_1_ERROR_BLOCK_STATUS BlockStatus;
+ UINT32 RawDataOffset;
+ UINT32 RawDataLength;
+ UINT32 DataLength;
+ UINT32 ErrorSeverity;
+} EFI_ACPI_6_1_BOOT_ERROR_REGION_STRUCTURE;
+
+//
+// Boot Error Severity types
+//
+#define EFI_ACPI_6_1_ERROR_SEVERITY_RECOVERABLE 0x00
+#define EFI_ACPI_6_1_ERROR_SEVERITY_FATAL 0x01
+#define EFI_ACPI_6_1_ERROR_SEVERITY_CORRECTED 0x02
+#define EFI_ACPI_6_1_ERROR_SEVERITY_NONE 0x03
+//
+// The term 'Correctable' is no longer being used as an error severity of the
+// reported error since ACPI Specification Version 5.1 Errata B.
+// The below macro is considered as deprecated and should no longer be used.
+//
+#define EFI_ACPI_6_1_ERROR_SEVERITY_CORRECTABLE 0x00
+
+///
+/// Generic Error Data Entry Definition
+///
+typedef struct {
+ UINT8 SectionType[16];
+ UINT32 ErrorSeverity;
+ UINT16 Revision;
+ UINT8 ValidationBits;
+ UINT8 Flags;
+ UINT32 ErrorDataLength;
+ UINT8 FruId[16];
+ UINT8 FruText[20];
+ UINT8 Timestamp[8];
+} EFI_ACPI_6_1_GENERIC_ERROR_DATA_ENTRY_STRUCTURE;
+
+///
+/// Generic Error Data Entry Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_GENERIC_ERROR_DATA_ENTRY_REVISION 0x0300
+
+///
+/// HEST - Hardware Error Source Table
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 ErrorSourceCount;
+} EFI_ACPI_6_1_HARDWARE_ERROR_SOURCE_TABLE_HEADER;
+
+///
+/// HEST Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_HARDWARE_ERROR_SOURCE_TABLE_REVISION 0x01
+
+//
+// Error Source structure types.
+//
+#define EFI_ACPI_6_1_IA32_ARCHITECTURE_MACHINE_CHECK_EXCEPTION 0x00
+#define EFI_ACPI_6_1_IA32_ARCHITECTURE_CORRECTED_MACHINE_CHECK 0x01
+#define EFI_ACPI_6_1_IA32_ARCHITECTURE_NMI_ERROR 0x02
+#define EFI_ACPI_6_1_PCI_EXPRESS_ROOT_PORT_AER 0x06
+#define EFI_ACPI_6_1_PCI_EXPRESS_DEVICE_AER 0x07
+#define EFI_ACPI_6_1_PCI_EXPRESS_BRIDGE_AER 0x08
+#define EFI_ACPI_6_1_GENERIC_HARDWARE_ERROR 0x09
+#define EFI_ACPI_6_1_GENERIC_HARDWARE_ERROR_VERSION_2 0x0A
+
+//
+// Error Source structure flags.
+//
+#define EFI_ACPI_6_1_ERROR_SOURCE_FLAG_FIRMWARE_FIRST (1 << 0)
+#define EFI_ACPI_6_1_ERROR_SOURCE_FLAG_GLOBAL (1 << 1)
+
+///
+/// IA-32 Architecture Machine Check Exception Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT8 Reserved0[2];
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT64 GlobalCapabilityInitData;
+ UINT64 GlobalControlInitData;
+ UINT8 NumberOfHardwareBanks;
+ UINT8 Reserved1[7];
+} EFI_ACPI_6_1_IA32_ARCHITECTURE_MACHINE_CHECK_EXCEPTION_STRUCTURE;
+
+///
+/// IA-32 Architecture Machine Check Bank Structure Definition
+///
+typedef struct {
+ UINT8 BankNumber;
+ UINT8 ClearStatusOnInitialization;
+ UINT8 StatusDataFormat;
+ UINT8 Reserved0;
+ UINT32 ControlRegisterMsrAddress;
+ UINT64 ControlInitData;
+ UINT32 StatusRegisterMsrAddress;
+ UINT32 AddressRegisterMsrAddress;
+ UINT32 MiscRegisterMsrAddress;
+} EFI_ACPI_6_1_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_BANK_STRUCTURE;
+
+///
+/// IA-32 Architecture Machine Check Bank Structure MCA data format
+///
+#define EFI_ACPI_6_1_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_DATA_FORMAT_IA32 0x00
+#define EFI_ACPI_6_1_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_DATA_FORMAT_INTEL64 0x01
+#define EFI_ACPI_6_1_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_DATA_FORMAT_AMD64 0x02
+
+//
+// Hardware Error Notification types. All other values are reserved
+//
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_POLLED 0x00
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_EXTERNAL_INTERRUPT 0x01
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_LOCAL_INTERRUPT 0x02
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_SCI 0x03
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_NMI 0x04
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_CMCI 0x05
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_MCE 0x06
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_GPIO_SIGNAL 0x07
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_ARMV8_SEA 0x08
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_ARMV8_SEI 0x09
+#define EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_GSIV 0x0A
+
+///
+/// Hardware Error Notification Configuration Write Enable Structure Definition
+///
+typedef struct {
+ UINT16 Type : 1;
+ UINT16 PollInterval : 1;
+ UINT16 SwitchToPollingThresholdValue : 1;
+ UINT16 SwitchToPollingThresholdWindow : 1;
+ UINT16 ErrorThresholdValue : 1;
+ UINT16 ErrorThresholdWindow : 1;
+ UINT16 Reserved : 10;
+} EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_CONFIGURATION_WRITE_ENABLE_STRUCTURE;
+
+///
+/// Hardware Error Notification Structure Definition
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_CONFIGURATION_WRITE_ENABLE_STRUCTURE ConfigurationWriteEnable;
+ UINT32 PollInterval;
+ UINT32 Vector;
+ UINT32 SwitchToPollingThresholdValue;
+ UINT32 SwitchToPollingThresholdWindow;
+ UINT32 ErrorThresholdValue;
+ UINT32 ErrorThresholdWindow;
+} EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_STRUCTURE;
+
+///
+/// IA-32 Architecture Corrected Machine Check Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT8 Reserved0[2];
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_STRUCTURE NotificationStructure;
+ UINT8 NumberOfHardwareBanks;
+ UINT8 Reserved1[3];
+} EFI_ACPI_6_1_IA32_ARCHITECTURE_CORRECTED_MACHINE_CHECK_STRUCTURE;
+
+///
+/// IA-32 Architecture NMI Error Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT8 Reserved0[2];
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT32 MaxRawDataLength;
+} EFI_ACPI_6_1_IA32_ARCHITECTURE_NMI_ERROR_STRUCTURE;
+
+///
+/// PCI Express Root Port AER Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT8 Reserved0[2];
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT32 Bus;
+ UINT16 Device;
+ UINT16 Function;
+ UINT16 DeviceControl;
+ UINT8 Reserved1[2];
+ UINT32 UncorrectableErrorMask;
+ UINT32 UncorrectableErrorSeverity;
+ UINT32 CorrectableErrorMask;
+ UINT32 AdvancedErrorCapabilitiesAndControl;
+ UINT32 RootErrorCommand;
+} EFI_ACPI_6_1_PCI_EXPRESS_ROOT_PORT_AER_STRUCTURE;
+
+///
+/// PCI Express Device AER Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT8 Reserved0[2];
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT32 Bus;
+ UINT16 Device;
+ UINT16 Function;
+ UINT16 DeviceControl;
+ UINT8 Reserved1[2];
+ UINT32 UncorrectableErrorMask;
+ UINT32 UncorrectableErrorSeverity;
+ UINT32 CorrectableErrorMask;
+ UINT32 AdvancedErrorCapabilitiesAndControl;
+} EFI_ACPI_6_1_PCI_EXPRESS_DEVICE_AER_STRUCTURE;
+
+///
+/// PCI Express Bridge AER Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT8 Reserved0[2];
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT32 Bus;
+ UINT16 Device;
+ UINT16 Function;
+ UINT16 DeviceControl;
+ UINT8 Reserved1[2];
+ UINT32 UncorrectableErrorMask;
+ UINT32 UncorrectableErrorSeverity;
+ UINT32 CorrectableErrorMask;
+ UINT32 AdvancedErrorCapabilitiesAndControl;
+ UINT32 SecondaryUncorrectableErrorMask;
+ UINT32 SecondaryUncorrectableErrorSeverity;
+ UINT32 SecondaryAdvancedErrorCapabilitiesAndControl;
+} EFI_ACPI_6_1_PCI_EXPRESS_BRIDGE_AER_STRUCTURE;
+
+///
+/// Generic Hardware Error Source Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT16 RelatedSourceId;
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT32 MaxRawDataLength;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE ErrorStatusAddress;
+ EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_STRUCTURE NotificationStructure;
+ UINT32 ErrorStatusBlockLength;
+} EFI_ACPI_6_1_GENERIC_HARDWARE_ERROR_SOURCE_STRUCTURE;
+
+///
+/// Generic Hardware Error Source Version 2 Structure Definition
+///
+typedef struct {
+ UINT16 Type;
+ UINT16 SourceId;
+ UINT16 RelatedSourceId;
+ UINT8 Flags;
+ UINT8 Enabled;
+ UINT32 NumberOfRecordsToPreAllocate;
+ UINT32 MaxSectionsPerRecord;
+ UINT32 MaxRawDataLength;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE ErrorStatusAddress;
+ EFI_ACPI_6_1_HARDWARE_ERROR_NOTIFICATION_STRUCTURE NotificationStructure;
+ UINT32 ErrorStatusBlockLength;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE ReadAckRegister;
+ UINT64 ReadAckPreserve;
+ UINT64 ReadAckWrite;
+} EFI_ACPI_6_1_GENERIC_HARDWARE_ERROR_SOURCE_VERSION_2_STRUCTURE;
+
+///
+/// Generic Error Status Definition
+///
+typedef struct {
+ EFI_ACPI_6_1_ERROR_BLOCK_STATUS BlockStatus;
+ UINT32 RawDataOffset;
+ UINT32 RawDataLength;
+ UINT32 DataLength;
+ UINT32 ErrorSeverity;
+} EFI_ACPI_6_1_GENERIC_ERROR_STATUS_STRUCTURE;
+
+///
+/// ERST - Error Record Serialization Table
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 SerializationHeaderSize;
+ UINT8 Reserved0[4];
+ UINT32 InstructionEntryCount;
+} EFI_ACPI_6_1_ERROR_RECORD_SERIALIZATION_TABLE_HEADER;
+
+///
+/// ERST Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_ERROR_RECORD_SERIALIZATION_TABLE_REVISION 0x01
+
+///
+/// ERST Serialization Actions
+///
+#define EFI_ACPI_6_1_ERST_BEGIN_WRITE_OPERATION 0x00
+#define EFI_ACPI_6_1_ERST_BEGIN_READ_OPERATION 0x01
+#define EFI_ACPI_6_1_ERST_BEGIN_CLEAR_OPERATION 0x02
+#define EFI_ACPI_6_1_ERST_END_OPERATION 0x03
+#define EFI_ACPI_6_1_ERST_SET_RECORD_OFFSET 0x04
+#define EFI_ACPI_6_1_ERST_EXECUTE_OPERATION 0x05
+#define EFI_ACPI_6_1_ERST_CHECK_BUSY_STATUS 0x06
+#define EFI_ACPI_6_1_ERST_GET_COMMAND_STATUS 0x07
+#define EFI_ACPI_6_1_ERST_GET_RECORD_IDENTIFIER 0x08
+#define EFI_ACPI_6_1_ERST_SET_RECORD_IDENTIFIER 0x09
+#define EFI_ACPI_6_1_ERST_GET_RECORD_COUNT 0x0A
+#define EFI_ACPI_6_1_ERST_BEGIN_DUMMY_WRITE_OPERATION 0x0B
+#define EFI_ACPI_6_1_ERST_GET_ERROR_LOG_ADDRESS_RANGE 0x0D
+#define EFI_ACPI_6_1_ERST_GET_ERROR_LOG_ADDRESS_RANGE_LENGTH 0x0E
+#define EFI_ACPI_6_1_ERST_GET_ERROR_LOG_ADDRESS_RANGE_ATTRIBUTES 0x0F
+#define EFI_ACPI_6_1_ERST_GET_EXECUTE_OPERATION_TIMINGS 0x10
+
+///
+/// ERST Action Command Status
+///
+#define EFI_ACPI_6_1_ERST_STATUS_SUCCESS 0x00
+#define EFI_ACPI_6_1_ERST_STATUS_NOT_ENOUGH_SPACE 0x01
+#define EFI_ACPI_6_1_ERST_STATUS_HARDWARE_NOT_AVAILABLE 0x02
+#define EFI_ACPI_6_1_ERST_STATUS_FAILED 0x03
+#define EFI_ACPI_6_1_ERST_STATUS_RECORD_STORE_EMPTY 0x04
+#define EFI_ACPI_6_1_ERST_STATUS_RECORD_NOT_FOUND 0x05
+
+///
+/// ERST Serialization Instructions
+///
+#define EFI_ACPI_6_1_ERST_READ_REGISTER 0x00
+#define EFI_ACPI_6_1_ERST_READ_REGISTER_VALUE 0x01
+#define EFI_ACPI_6_1_ERST_WRITE_REGISTER 0x02
+#define EFI_ACPI_6_1_ERST_WRITE_REGISTER_VALUE 0x03
+#define EFI_ACPI_6_1_ERST_NOOP 0x04
+#define EFI_ACPI_6_1_ERST_LOAD_VAR1 0x05
+#define EFI_ACPI_6_1_ERST_LOAD_VAR2 0x06
+#define EFI_ACPI_6_1_ERST_STORE_VAR1 0x07
+#define EFI_ACPI_6_1_ERST_ADD 0x08
+#define EFI_ACPI_6_1_ERST_SUBTRACT 0x09
+#define EFI_ACPI_6_1_ERST_ADD_VALUE 0x0A
+#define EFI_ACPI_6_1_ERST_SUBTRACT_VALUE 0x0B
+#define EFI_ACPI_6_1_ERST_STALL 0x0C
+#define EFI_ACPI_6_1_ERST_STALL_WHILE_TRUE 0x0D
+#define EFI_ACPI_6_1_ERST_SKIP_NEXT_INSTRUCTION_IF_TRUE 0x0E
+#define EFI_ACPI_6_1_ERST_GOTO 0x0F
+#define EFI_ACPI_6_1_ERST_SET_SRC_ADDRESS_BASE 0x10
+#define EFI_ACPI_6_1_ERST_SET_DST_ADDRESS_BASE 0x11
+#define EFI_ACPI_6_1_ERST_MOVE_DATA 0x12
+
+///
+/// ERST Instruction Flags
+///
+#define EFI_ACPI_6_1_ERST_PRESERVE_REGISTER 0x01
+
+///
+/// ERST Serialization Instruction Entry
+///
+typedef struct {
+ UINT8 SerializationAction;
+ UINT8 Instruction;
+ UINT8 Flags;
+ UINT8 Reserved0;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE RegisterRegion;
+ UINT64 Value;
+ UINT64 Mask;
+} EFI_ACPI_6_1_ERST_SERIALIZATION_INSTRUCTION_ENTRY;
+
+///
+/// EINJ - Error Injection Table
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 InjectionHeaderSize;
+ UINT8 InjectionFlags;
+ UINT8 Reserved0[3];
+ UINT32 InjectionEntryCount;
+} EFI_ACPI_6_1_ERROR_INJECTION_TABLE_HEADER;
+
+///
+/// EINJ Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_ERROR_INJECTION_TABLE_REVISION 0x01
+
+///
+/// EINJ Error Injection Actions
+///
+#define EFI_ACPI_6_1_EINJ_BEGIN_INJECTION_OPERATION 0x00
+#define EFI_ACPI_6_1_EINJ_GET_TRIGGER_ERROR_ACTION_TABLE 0x01
+#define EFI_ACPI_6_1_EINJ_SET_ERROR_TYPE 0x02
+#define EFI_ACPI_6_1_EINJ_GET_ERROR_TYPE 0x03
+#define EFI_ACPI_6_1_EINJ_END_OPERATION 0x04
+#define EFI_ACPI_6_1_EINJ_EXECUTE_OPERATION 0x05
+#define EFI_ACPI_6_1_EINJ_CHECK_BUSY_STATUS 0x06
+#define EFI_ACPI_6_1_EINJ_GET_COMMAND_STATUS 0x07
+#define EFI_ACPI_6_1_EINJ_SET_ERROR_TYPE_WITH_ADDRESS 0x08
+#define EFI_ACPI_6_1_EINJ_GET_EXECUTE_OPERATION_TIMINGS 0x09
+#define EFI_ACPI_6_1_EINJ_TRIGGER_ERROR 0xFF
+
+///
+/// EINJ Action Command Status
+///
+#define EFI_ACPI_6_1_EINJ_STATUS_SUCCESS 0x00
+#define EFI_ACPI_6_1_EINJ_STATUS_UNKNOWN_FAILURE 0x01
+#define EFI_ACPI_6_1_EINJ_STATUS_INVALID_ACCESS 0x02
+
+///
+/// EINJ Error Type Definition
+///
+#define EFI_ACPI_6_1_EINJ_ERROR_PROCESSOR_CORRECTABLE (1 << 0)
+#define EFI_ACPI_6_1_EINJ_ERROR_PROCESSOR_UNCORRECTABLE_NONFATAL (1 << 1)
+#define EFI_ACPI_6_1_EINJ_ERROR_PROCESSOR_UNCORRECTABLE_FATAL (1 << 2)
+#define EFI_ACPI_6_1_EINJ_ERROR_MEMORY_CORRECTABLE (1 << 3)
+#define EFI_ACPI_6_1_EINJ_ERROR_MEMORY_UNCORRECTABLE_NONFATAL (1 << 4)
+#define EFI_ACPI_6_1_EINJ_ERROR_MEMORY_UNCORRECTABLE_FATAL (1 << 5)
+#define EFI_ACPI_6_1_EINJ_ERROR_PCI_EXPRESS_CORRECTABLE (1 << 6)
+#define EFI_ACPI_6_1_EINJ_ERROR_PCI_EXPRESS_UNCORRECTABLE_NONFATAL (1 << 7)
+#define EFI_ACPI_6_1_EINJ_ERROR_PCI_EXPRESS_UNCORRECTABLE_FATAL (1 << 8)
+#define EFI_ACPI_6_1_EINJ_ERROR_PLATFORM_CORRECTABLE (1 << 9)
+#define EFI_ACPI_6_1_EINJ_ERROR_PLATFORM_UNCORRECTABLE_NONFATAL (1 << 10)
+#define EFI_ACPI_6_1_EINJ_ERROR_PLATFORM_UNCORRECTABLE_FATAL (1 << 11)
+
+///
+/// EINJ Injection Instructions
+///
+#define EFI_ACPI_6_1_EINJ_READ_REGISTER 0x00
+#define EFI_ACPI_6_1_EINJ_READ_REGISTER_VALUE 0x01
+#define EFI_ACPI_6_1_EINJ_WRITE_REGISTER 0x02
+#define EFI_ACPI_6_1_EINJ_WRITE_REGISTER_VALUE 0x03
+#define EFI_ACPI_6_1_EINJ_NOOP 0x04
+
+///
+/// EINJ Instruction Flags
+///
+#define EFI_ACPI_6_1_EINJ_PRESERVE_REGISTER 0x01
+
+///
+/// EINJ Injection Instruction Entry
+///
+typedef struct {
+ UINT8 InjectionAction;
+ UINT8 Instruction;
+ UINT8 Flags;
+ UINT8 Reserved0;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE RegisterRegion;
+ UINT64 Value;
+ UINT64 Mask;
+} EFI_ACPI_6_1_EINJ_INJECTION_INSTRUCTION_ENTRY;
+
+///
+/// EINJ Trigger Action Table
+///
+typedef struct {
+ UINT32 HeaderSize;
+ UINT32 Revision;
+ UINT32 TableSize;
+ UINT32 EntryCount;
+} EFI_ACPI_6_1_EINJ_TRIGGER_ACTION_TABLE;
+
+///
+/// Platform Communications Channel Table (PCCT)
+///
+typedef struct {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT32 Flags;
+ UINT64 Reserved;
+} EFI_ACPI_6_1_PLATFORM_COMMUNICATION_CHANNEL_TABLE_HEADER;
+
+///
+/// PCCT Version (as defined in ACPI 6.1 spec.)
+///
+#define EFI_ACPI_6_1_PLATFORM_COMMUNICATION_CHANNEL_TABLE_REVISION 0x01
+
+///
+/// PCCT Global Flags
+///
+#define EFI_ACPI_6_1_PCCT_FLAGS_SCI_DOORBELL BIT0
+
+//
+// PCCT Subspace type
+//
+#define EFI_ACPI_6_1_PCCT_SUBSPACE_TYPE_GENERIC 0x00
+#define EFI_ACPI_6_1_PCCT_SUBSPACE_TYPE_1_HW_REDUCED_COMMUNICATIONS 0x01
+#define EFI_ACPI_6_1_PCCT_SUBSPACE_TYPE_2_HW_REDUCED_COMMUNICATIONS 0x02
+
+///
+/// PCC Subspace Structure Header
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+} EFI_ACPI_6_1_PCCT_SUBSPACE_HEADER;
+
+///
+/// Generic Communications Subspace Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT8 Reserved[6];
+ UINT64 BaseAddress;
+ UINT64 AddressLength;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE DoorbellRegister;
+ UINT64 DoorbellPreserve;
+ UINT64 DoorbellWrite;
+ UINT32 NominalLatency;
+ UINT32 MaximumPeriodicAccessRate;
+ UINT16 MinimumRequestTurnaroundTime;
+} EFI_ACPI_6_1_PCCT_SUBSPACE_GENERIC;
+
+///
+/// Generic Communications Channel Shared Memory Region
+///
+
+typedef struct {
+ UINT8 Command;
+ UINT8 Reserved : 7;
+ UINT8 GenerateSci : 1;
+} EFI_ACPI_6_1_PCCT_GENERIC_SHARED_MEMORY_REGION_COMMAND;
+
+typedef struct {
+ UINT8 CommandComplete : 1;
+ UINT8 SciDoorbell : 1;
+ UINT8 Error : 1;
+ UINT8 PlatformNotification : 1;
+ UINT8 Reserved : 4;
+ UINT8 Reserved1;
+} EFI_ACPI_6_1_PCCT_GENERIC_SHARED_MEMORY_REGION_STATUS;
+
+typedef struct {
+ UINT32 Signature;
+ EFI_ACPI_6_1_PCCT_GENERIC_SHARED_MEMORY_REGION_COMMAND Command;
+ EFI_ACPI_6_1_PCCT_GENERIC_SHARED_MEMORY_REGION_STATUS Status;
+} EFI_ACPI_6_1_PCCT_GENERIC_SHARED_MEMORY_REGION_HEADER;
+
+#define EFI_ACPI_6_1_PCCT_SUBSPACE_DOORBELL_INTERRUPT_FLAGS_POLARITY BIT0
+#define EFI_ACPI_6_1_PCCT_SUBSPACE_DOORBELL_INTERRUPT_FLAGS_MODE BIT1
+
+///
+/// Type 1 HW-Reduced Communications Subspace Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT32 DoorbellInterrupt;
+ UINT8 DoorbellInterruptFlags;
+ UINT8 Reserved;
+ UINT64 BaseAddress;
+ UINT64 AddressLength;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE DoorbellRegister;
+ UINT64 DoorbellPreserve;
+ UINT64 DoorbellWrite;
+ UINT32 NominalLatency;
+ UINT32 MaximumPeriodicAccessRate;
+ UINT16 MinimumRequestTurnaroundTime;
+} EFI_ACPI_6_1_PCCT_SUBSPACE_1_HW_REDUCED_COMMUNICATIONS;
+
+///
+/// Type 2 HW-Reduced Communications Subspace Structure
+///
+typedef struct {
+ UINT8 Type;
+ UINT8 Length;
+ UINT32 DoorbellInterrupt;
+ UINT8 DoorbellInterruptFlags;
+ UINT8 Reserved;
+ UINT64 BaseAddress;
+ UINT64 AddressLength;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE DoorbellRegister;
+ UINT64 DoorbellPreserve;
+ UINT64 DoorbellWrite;
+ UINT32 NominalLatency;
+ UINT32 MaximumPeriodicAccessRate;
+ UINT16 MinimumRequestTurnaroundTime;
+ EFI_ACPI_6_1_GENERIC_ADDRESS_STRUCTURE DoorbellAckRegister;
+ UINT64 DoorbellAckPreserve;
+ UINT64 DoorbellAckWrite;
+} EFI_ACPI_6_1_PCCT_SUBSPACE_2_HW_REDUCED_COMMUNICATIONS;
+
+//
+// Known table signatures
+//
+
+///
+/// "RSD PTR " Root System Description Pointer
+///
+#define EFI_ACPI_6_1_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE SIGNATURE_64('R', 'S', 'D', ' ', 'P', 'T', 'R', ' ')
+
+///
+/// "APIC" Multiple APIC Description Table
+///
+#define EFI_ACPI_6_1_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('A', 'P', 'I', 'C')
+
+///
+/// "BERT" Boot Error Record Table
+///
+#define EFI_ACPI_6_1_BOOT_ERROR_RECORD_TABLE_SIGNATURE SIGNATURE_32('B', 'E', 'R', 'T')
+
+///
+/// "BGRT" Boot Graphics Resource Table
+///
+#define EFI_ACPI_6_1_BOOT_GRAPHICS_RESOURCE_TABLE_SIGNATURE SIGNATURE_32('B', 'G', 'R', 'T')
+
+///
+/// "CPEP" Corrected Platform Error Polling Table
+///
+#define EFI_ACPI_6_1_CORRECTED_PLATFORM_ERROR_POLLING_TABLE_SIGNATURE SIGNATURE_32('C', 'P', 'E', 'P')
+
+///
+/// "DSDT" Differentiated System Description Table
+///
+#define EFI_ACPI_6_1_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('D', 'S', 'D', 'T')
+
+///
+/// "ECDT" Embedded Controller Boot Resources Table
+///
+#define EFI_ACPI_6_1_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE_SIGNATURE SIGNATURE_32('E', 'C', 'D', 'T')
+
+///
+/// "EINJ" Error Injection Table
+///
+#define EFI_ACPI_6_1_ERROR_INJECTION_TABLE_SIGNATURE SIGNATURE_32('E', 'I', 'N', 'J')
+
+///
+/// "ERST" Error Record Serialization Table
+///
+#define EFI_ACPI_6_1_ERROR_RECORD_SERIALIZATION_TABLE_SIGNATURE SIGNATURE_32('E', 'R', 'S', 'T')
+
+///
+/// "FACP" Fixed ACPI Description Table
+///
+#define EFI_ACPI_6_1_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('F', 'A', 'C', 'P')
+
+///
+/// "FACS" Firmware ACPI Control Structure
+///
+#define EFI_ACPI_6_1_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE SIGNATURE_32('F', 'A', 'C', 'S')
+
+///
+/// "FPDT" Firmware Performance Data Table
+///
+#define EFI_ACPI_6_1_FIRMWARE_PERFORMANCE_DATA_TABLE_SIGNATURE SIGNATURE_32('F', 'P', 'D', 'T')
+
+///
+/// "GTDT" Generic Timer Description Table
+///
+#define EFI_ACPI_6_1_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('G', 'T', 'D', 'T')
+
+///
+/// "HEST" Hardware Error Source Table
+///
+#define EFI_ACPI_6_1_HARDWARE_ERROR_SOURCE_TABLE_SIGNATURE SIGNATURE_32('H', 'E', 'S', 'T')
+
+///
+/// "MPST" Memory Power State Table
+///
+#define EFI_ACPI_6_1_MEMORY_POWER_STATE_TABLE_SIGNATURE SIGNATURE_32('M', 'P', 'S', 'T')
+
+///
+/// "MSCT" Maximum System Characteristics Table
+///
+#define EFI_ACPI_6_1_MAXIMUM_SYSTEM_CHARACTERISTICS_TABLE_SIGNATURE SIGNATURE_32('M', 'S', 'C', 'T')
+
+///
+/// "NFIT" NVDIMM Firmware Interface Table
+///
+#define EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_STRUCTURE_SIGNATURE SIGNATURE_32('N', 'F', 'I', 'T')
+
+///
+/// "PMTT" Platform Memory Topology Table
+///
+#define EFI_ACPI_6_1_PLATFORM_MEMORY_TOPOLOGY_TABLE_SIGNATURE SIGNATURE_32('P', 'M', 'T', 'T')
+
+///
+/// "PSDT" Persistent System Description Table
+///
+#define EFI_ACPI_6_1_PERSISTENT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('P', 'S', 'D', 'T')
+
+///
+/// "RASF" ACPI RAS Feature Table
+///
+#define EFI_ACPI_6_1_ACPI_RAS_FEATURE_TABLE_SIGNATURE SIGNATURE_32('R', 'A', 'S', 'F')
+
+///
+/// "RSDT" Root System Description Table
+///
+#define EFI_ACPI_6_1_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('R', 'S', 'D', 'T')
+
+///
+/// "SBST" Smart Battery Specification Table
+///
+#define EFI_ACPI_6_1_SMART_BATTERY_SPECIFICATION_TABLE_SIGNATURE SIGNATURE_32('S', 'B', 'S', 'T')
+
+///
+/// "SLIT" System Locality Information Table
+///
+#define EFI_ACPI_6_1_SYSTEM_LOCALITY_INFORMATION_TABLE_SIGNATURE SIGNATURE_32('S', 'L', 'I', 'T')
+
+///
+/// "SRAT" System Resource Affinity Table
+///
+#define EFI_ACPI_6_1_SYSTEM_RESOURCE_AFFINITY_TABLE_SIGNATURE SIGNATURE_32('S', 'R', 'A', 'T')
+
+///
+/// "SSDT" Secondary System Description Table
+///
+#define EFI_ACPI_6_1_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('S', 'S', 'D', 'T')
+
+///
+/// "XSDT" Extended System Description Table
+///
+#define EFI_ACPI_6_1_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('X', 'S', 'D', 'T')
+
+///
+/// "BOOT" MS Simple Boot Spec
+///
+#define EFI_ACPI_6_1_SIMPLE_BOOT_FLAG_TABLE_SIGNATURE SIGNATURE_32('B', 'O', 'O', 'T')
+
+///
+/// "CSRT" MS Core System Resource Table
+///
+#define EFI_ACPI_6_1_CORE_SYSTEM_RESOURCE_TABLE_SIGNATURE SIGNATURE_32('C', 'S', 'R', 'T')
+
+///
+/// "DBG2" MS Debug Port 2 Spec
+///
+#define EFI_ACPI_6_1_DEBUG_PORT_2_TABLE_SIGNATURE SIGNATURE_32('D', 'B', 'G', '2')
+
+///
+/// "DBGP" MS Debug Port Spec
+///
+#define EFI_ACPI_6_1_DEBUG_PORT_TABLE_SIGNATURE SIGNATURE_32('D', 'B', 'G', 'P')
+
+///
+/// "DMAR" DMA Remapping Table
+///
+#define EFI_ACPI_6_1_DMA_REMAPPING_TABLE_SIGNATURE SIGNATURE_32('D', 'M', 'A', 'R')
+
+///
+/// "DRTM" Dynamic Root of Trust for Measurement Table
+///
+#define EFI_ACPI_6_1_DYNAMIC_ROOT_OF_TRUST_FOR_MEASUREMENT_TABLE_SIGNATURE SIGNATURE_32('D', 'R', 'T', 'M')
+
+///
+/// "ETDT" Event Timer Description Table
+///
+#define EFI_ACPI_6_1_EVENT_TIMER_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('E', 'T', 'D', 'T')
+
+///
+/// "HPET" IA-PC High Precision Event Timer Table
+///
+#define EFI_ACPI_6_1_HIGH_PRECISION_EVENT_TIMER_TABLE_SIGNATURE SIGNATURE_32('H', 'P', 'E', 'T')
+
+///
+/// "iBFT" iSCSI Boot Firmware Table
+///
+#define EFI_ACPI_6_1_ISCSI_BOOT_FIRMWARE_TABLE_SIGNATURE SIGNATURE_32('i', 'B', 'F', 'T')
+
+///
+/// "IORT" I/O Remapping Table
+///
+#define EFI_ACPI_6_1_IO_REMAPPING_TABLE_SIGNATURE SIGNATURE_32('I', 'O', 'R', 'T')
+
+///
+/// "IVRS" I/O Virtualization Reporting Structure
+///
+#define EFI_ACPI_6_1_IO_VIRTUALIZATION_REPORTING_STRUCTURE_SIGNATURE SIGNATURE_32('I', 'V', 'R', 'S')
+
+///
+/// "LPIT" Low Power Idle Table
+///
+#define EFI_ACPI_6_1_LOW_POWER_IDLE_TABLE_STRUCTURE_SIGNATURE SIGNATURE_32('L', 'P', 'I', 'T')
+
+///
+/// "MCFG" PCI Express Memory Mapped Configuration Space Base Address Description Table
+///
+#define EFI_ACPI_6_1_PCI_EXPRESS_MEMORY_MAPPED_CONFIGURATION_SPACE_BASE_ADDRESS_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('M', 'C', 'F', 'G')
+
+///
+/// "MCHI" Management Controller Host Interface Table
+///
+#define EFI_ACPI_6_1_MANAGEMENT_CONTROLLER_HOST_INTERFACE_TABLE_SIGNATURE SIGNATURE_32('M', 'C', 'H', 'I')
+
+///
+/// "MSDM" MS Data Management Table
+///
+#define EFI_ACPI_6_1_DATA_MANAGEMENT_TABLE_SIGNATURE SIGNATURE_32('M', 'S', 'D', 'M')
+
+///
+/// "PCCT" Platform Communications Channel Table
+///
+#define EFI_ACPI_6_1_PLATFORM_COMMUNICATIONS_CHANNEL_TABLE_SIGNATURE SIGNATURE_32('P', 'C', 'C', 'T')
+
+///
+/// "SLIC" MS Software Licensing Table Specification
+///
+#define EFI_ACPI_6_1_SOFTWARE_LICENSING_TABLE_SIGNATURE SIGNATURE_32('S', 'L', 'I', 'C')
+
+///
+/// "SPCR" Serial Port Console Redirection Table
+///
+#define EFI_ACPI_6_1_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE SIGNATURE_32('S', 'P', 'C', 'R')
+
+///
+/// "SPMI" Server Platform Management Interface Table
+///
+#define EFI_ACPI_6_1_SERVER_PLATFORM_MANAGEMENT_INTERFACE_TABLE_SIGNATURE SIGNATURE_32('S', 'P', 'M', 'I')
+
+///
+/// "STAO" _STA Override Table
+///
+#define EFI_ACPI_6_1_STA_OVERRIDE_TABLE_SIGNATURE SIGNATURE_32('S', 'T', 'A', 'O')
+
+///
+/// "TCPA" Trusted Computing Platform Alliance Capabilities Table
+///
+#define EFI_ACPI_6_1_TRUSTED_COMPUTING_PLATFORM_ALLIANCE_CAPABILITIES_TABLE_SIGNATURE SIGNATURE_32('T', 'C', 'P', 'A')
+
+///
+/// "TPM2" Trusted Computing Platform 1 Table
+///
+#define EFI_ACPI_6_1_TRUSTED_COMPUTING_PLATFORM_2_TABLE_SIGNATURE SIGNATURE_32('T', 'P', 'M', '2')
+
+///
+/// "UEFI" UEFI ACPI Data Table
+///
+#define EFI_ACPI_6_1_UEFI_ACPI_DATA_TABLE_SIGNATURE SIGNATURE_32('U', 'E', 'F', 'I')
+
+///
+/// "WAET" Windows ACPI Emulated Devices Table
+///
+#define EFI_ACPI_6_1_WINDOWS_ACPI_EMULATED_DEVICES_TABLE_SIGNATURE SIGNATURE_32('W', 'A', 'E', 'T')
+
+///
+/// "WDAT" Watchdog Action Table
+///
+#define EFI_ACPI_6_1_WATCHDOG_ACTION_TABLE_SIGNATURE SIGNATURE_32('W', 'D', 'A', 'T')
+
+///
+/// "WDRT" Watchdog Resource Table
+///
+#define EFI_ACPI_6_1_WATCHDOG_RESOURCE_TABLE_SIGNATURE SIGNATURE_32('W', 'D', 'R', 'T')
+
+///
+/// "WPBT" MS Platform Binary Table
+///
+#define EFI_ACPI_6_1_PLATFORM_BINARY_TABLE_SIGNATURE SIGNATURE_32('W', 'P', 'B', 'T')
+
+///
+/// "XENV" Xen Project Table
+///
+#define EFI_ACPI_6_1_XEN_PROJECT_TABLE_SIGNATURE SIGNATURE_32('X', 'E', 'N', 'V')
+
+#pragma pack()
+
+#endif
diff --git a/sys/contrib/edk2/Include/Protocol/AcpiSystemDescriptionTable.h b/sys/contrib/edk2/Include/Protocol/AcpiSystemDescriptionTable.h
new file mode 100644
--- /dev/null
+++ b/sys/contrib/edk2/Include/Protocol/AcpiSystemDescriptionTable.h
@@ -0,0 +1,263 @@
+/** @file
+ This protocol provides services for creating ACPI system description tables.
+
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Revision Reference:
+ This Protocol was introduced in PI Specification 1.2.
+
+**/
+
+#ifndef __ACPI_SYSTEM_DESCRIPTION_TABLE_H___
+#define __ACPI_SYSTEM_DESCRIPTION_TABLE_H___
+
+#define EFI_ACPI_SDT_PROTOCOL_GUID \
+ { 0xeb97088e, 0xcfdf, 0x49c6, { 0xbe, 0x4b, 0xd9, 0x6, 0xa5, 0xb2, 0xe, 0x86 }}
+
+typedef UINT32 EFI_ACPI_TABLE_VERSION;
+typedef VOID *EFI_ACPI_HANDLE;
+
+#define EFI_ACPI_TABLE_VERSION_NONE (1 << 0)
+#define EFI_ACPI_TABLE_VERSION_1_0B (1 << 1)
+#define EFI_ACPI_TABLE_VERSION_2_0 (1 << 2)
+#define EFI_ACPI_TABLE_VERSION_3_0 (1 << 3)
+#define EFI_ACPI_TABLE_VERSION_4_0 (1 << 4)
+#define EFI_ACPI_TABLE_VERSION_5_0 (1 << 5)
+
+typedef UINT32 EFI_ACPI_DATA_TYPE;
+#define EFI_ACPI_DATA_TYPE_NONE 0
+#define EFI_ACPI_DATA_TYPE_OPCODE 1
+#define EFI_ACPI_DATA_TYPE_NAME_STRING 2
+#define EFI_ACPI_DATA_TYPE_OP 3
+#define EFI_ACPI_DATA_TYPE_UINT 4
+#define EFI_ACPI_DATA_TYPE_STRING 5
+#define EFI_ACPI_DATA_TYPE_CHILD 6
+
+typedef struct {
+ UINT32 Signature;
+ UINT32 Length;
+ UINT8 Revision;
+ UINT8 Checksum;
+ CHAR8 OemId[6];
+ CHAR8 OemTableId[8];
+ UINT32 OemRevision;
+ UINT32 CreatorId;
+ UINT32 CreatorRevision;
+} EFI_ACPI_SDT_HEADER;
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_NOTIFICATION_FN)(
+ IN EFI_ACPI_SDT_HEADER *Table, ///< A pointer to the ACPI table header.
+ IN EFI_ACPI_TABLE_VERSION Version, ///< The ACPI table's version.
+ IN UINTN TableKey ///< The table key for this ACPI table.
+ );
+
+/**
+ Returns a requested ACPI table.
+
+ The GetAcpiTable() function returns a pointer to a buffer containing the ACPI table associated
+ with the Index that was input. The following structures are not considered elements in the list of
+ ACPI tables:
+ - Root System Description Pointer (RSD_PTR)
+ - Root System Description Table (RSDT)
+ - Extended System Description Table (XSDT)
+ Version is updated with a bit map containing all the versions of ACPI of which the table is a
+ member. For tables installed via the EFI_ACPI_TABLE_PROTOCOL.InstallAcpiTable() interface,
+ the function returns the value of EFI_ACPI_STD_PROTOCOL.AcpiVersion.
+
+ @param[in] Index The zero-based index of the table to retrieve.
+ @param[out] Table Pointer for returning the table buffer.
+ @param[out] Version On return, updated with the ACPI versions to which this table belongs. Type
+ EFI_ACPI_TABLE_VERSION is defined in "Related Definitions" in the
+ EFI_ACPI_SDT_PROTOCOL.
+ @param[out] TableKey On return, points to the table key for the specified ACPI system definition table.
+ This is identical to the table key used in the EFI_ACPI_TABLE_PROTOCOL.
+ The TableKey can be passed to EFI_ACPI_TABLE_PROTOCOL.UninstallAcpiTable()
+ to uninstall the table.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_NOT_FOUND The requested index is too large and a table was not found.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_GET_ACPI_TABLE2)(
+ IN UINTN Index,
+ OUT EFI_ACPI_SDT_HEADER **Table,
+ OUT EFI_ACPI_TABLE_VERSION *Version,
+ OUT UINTN *TableKey
+ );
+
+/**
+ Register or unregister a callback when an ACPI table is installed.
+
+ This function registers or unregisters a function which will be called whenever a new ACPI table is
+ installed.
+
+ @param[in] Register If TRUE, then the specified function will be registered. If FALSE, then the specified
+ function will be unregistered.
+ @param[in] Notification Points to the callback function to be registered or unregistered.
+
+ @retval EFI_SUCCESS Callback successfully registered or unregistered.
+ @retval EFI_INVALID_PARAMETER Notification is NULL
+ @retval EFI_INVALID_PARAMETER Register is FALSE and Notification does not match a known registration function.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_REGISTER_NOTIFY)(
+ IN BOOLEAN Register,
+ IN EFI_ACPI_NOTIFICATION_FN Notification
+ );
+
+/**
+ Create a handle from an ACPI opcode
+
+ @param[in] Buffer Points to the ACPI opcode.
+ @param[out] Handle Upon return, holds the handle.
+
+ @retval EFI_SUCCESS Success
+ @retval EFI_INVALID_PARAMETER Buffer is NULL or Handle is NULL or Buffer points to an
+ invalid opcode.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_OPEN)(
+ IN VOID *Buffer,
+ OUT EFI_ACPI_HANDLE *Handle
+ );
+
+/**
+ Create a handle for the first ACPI opcode in an ACPI system description table.
+
+ @param[in] TableKey The table key for the ACPI table, as returned by GetTable().
+ @param[out] Handle On return, points to the newly created ACPI handle.
+
+ @retval EFI_SUCCESS Handle created successfully.
+ @retval EFI_NOT_FOUND TableKey does not refer to a valid ACPI table.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_OPEN_SDT)(
+ IN UINTN TableKey,
+ OUT EFI_ACPI_HANDLE *Handle
+ );
+
+/**
+ Close an ACPI handle.
+
+ @param[in] Handle Returns the handle.
+
+ @retval EFI_SUCCESS Success
+ @retval EFI_INVALID_PARAMETER Handle is NULL or does not refer to a valid ACPI object.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_CLOSE)(
+ IN EFI_ACPI_HANDLE Handle
+ );
+
+/**
+ Return the child ACPI objects.
+
+ @param[in] ParentHandle Parent handle.
+ @param[in, out] Handle On entry, points to the previously returned handle or NULL to start with the first
+ handle. On return, points to the next returned ACPI handle or NULL if there are no
+ child objects.
+
+ @retval EFI_SUCCESS Success
+ @retval EFI_INVALID_PARAMETER ParentHandle is NULL or does not refer to a valid ACPI object.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_GET_CHILD)(
+ IN EFI_ACPI_HANDLE ParentHandle,
+ IN OUT EFI_ACPI_HANDLE *Handle
+ );
+
+/**
+ Retrieve information about an ACPI object.
+
+ @param[in] Handle ACPI object handle.
+ @param[in] Index Index of the data to retrieve from the object. In general, indexes read from left-to-right
+ in the ACPI encoding, with index 0 always being the ACPI opcode.
+ @param[out] DataType Points to the returned data type or EFI_ACPI_DATA_TYPE_NONE if no data exists
+ for the specified index.
+ @param[out] Data Upon return, points to the pointer to the data.
+ @param[out] DataSize Upon return, points to the size of Data.
+
+ @retval
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_GET_OPTION)(
+ IN EFI_ACPI_HANDLE Handle,
+ IN UINTN Index,
+ OUT EFI_ACPI_DATA_TYPE *DataType,
+ OUT CONST VOID **Data,
+ OUT UINTN *DataSize
+ );
+
+/**
+ Change information about an ACPI object.
+
+ @param[in] Handle ACPI object handle.
+ @param[in] Index Index of the data to retrieve from the object. In general, indexes read from left-to-right
+ in the ACPI encoding, with index 0 always being the ACPI opcode.
+ @param[in] Data Points to the data.
+ @param[in] DataSize The size of the Data.
+
+ @retval EFI_SUCCESS Success
+ @retval EFI_INVALID_PARAMETER Handle is NULL or does not refer to a valid ACPI object.
+ @retval EFI_BAD_BUFFER_SIZE Data cannot be accommodated in the space occupied by
+ the option.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_SET_OPTION)(
+ IN EFI_ACPI_HANDLE Handle,
+ IN UINTN Index,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Returns the handle of the ACPI object representing the specified ACPI path
+
+ @param[in] HandleIn Points to the handle of the object representing the starting point for the path search.
+ @param[in] AcpiPath Points to the ACPI path, which conforms to the ACPI encoded path format.
+ @param[out] HandleOut On return, points to the ACPI object which represents AcpiPath, relative to
+ HandleIn.
+
+ @retval EFI_SUCCESS Success
+ @retval EFI_INVALID_PARAMETER HandleIn is NULL or does not refer to a valid ACPI object.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_FIND_PATH)(
+ IN EFI_ACPI_HANDLE HandleIn,
+ IN VOID *AcpiPath,
+ OUT EFI_ACPI_HANDLE *HandleOut
+ );
+
+typedef struct _EFI_ACPI_SDT_PROTOCOL {
+ ///
+ /// A bit map containing all the ACPI versions supported by this protocol.
+ ///
+ EFI_ACPI_TABLE_VERSION AcpiVersion;
+ EFI_ACPI_GET_ACPI_TABLE2 GetAcpiTable;
+ EFI_ACPI_REGISTER_NOTIFY RegisterNotify;
+ EFI_ACPI_OPEN Open;
+ EFI_ACPI_OPEN_SDT OpenSdt;
+ EFI_ACPI_CLOSE Close;
+ EFI_ACPI_GET_CHILD GetChild;
+ EFI_ACPI_GET_OPTION GetOption;
+ EFI_ACPI_SET_OPTION SetOption;
+ EFI_ACPI_FIND_PATH FindPath;
+} EFI_ACPI_SDT_PROTOCOL;
+
+extern EFI_GUID gEfiAcpiSdtProtocolGuid;
+
+#endif // __ACPI_SYSTEM_DESCRIPTION_TABLE_H___
diff --git a/sys/contrib/edk2/Include/Protocol/AcpiTable.h b/sys/contrib/edk2/Include/Protocol/AcpiTable.h
new file mode 100644
--- /dev/null
+++ b/sys/contrib/edk2/Include/Protocol/AcpiTable.h
@@ -0,0 +1,121 @@
+/** @file
+ The file provides the protocol to install or remove an ACPI
+ table from a platform.
+
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Revision Reference:
+ This Protocol was introduced in UEFI Specification 2.3.
+
+**/
+
+#ifndef __ACPI_TABLE_H___
+#define __ACPI_TABLE_H___
+
+#define EFI_ACPI_TABLE_PROTOCOL_GUID \
+ { 0xffe06bdd, 0x6107, 0x46a6, { 0x7b, 0xb2, 0x5a, 0x9c, 0x7e, 0xc5, 0x27, 0x5c }}
+
+typedef struct _EFI_ACPI_TABLE_PROTOCOL EFI_ACPI_TABLE_PROTOCOL;
+
+/**
+
+ The InstallAcpiTable() function allows a caller to install an
+ ACPI table. When successful, the table will be linked by the
+ RSDT/XSDT. AcpiTableBuffer specifies the table to be installed.
+ InstallAcpiTable() will make a copy of the table and insert the
+ copy into the RSDT/XSDT. InstallAcpiTable() must insert the new
+ table at the end of the RSDT/XSDT. To prevent namespace
+ collision, ACPI tables may be created using UEFI ACPI table
+ format. If this protocol is used to install a table with a
+ signature already present in the system, the new table will not
+ replace the existing table. It is a platform implementation
+ decision to add a new table with a signature matching an
+ existing table or disallow duplicate table signatures and
+ return EFI_ACCESS_DENIED. On successful output, TableKey is
+ initialized with a unique key. Its value may be used in a
+ subsequent call to UninstallAcpiTable to remove an ACPI table.
+ If an EFI application is running at the time of this call, the
+ relevant EFI_CONFIGURATION_TABLE pointer to the RSDT is no
+ longer considered valid.
+
+
+ @param This A pointer to a EFI_ACPI_TABLE_PROTOCOL.
+
+ @param AcpiTableBuffer A pointer to a buffer containing the
+ ACPI table to be installed.
+
+ @param AcpiTableBufferSize Specifies the size, in bytes, of
+ the AcpiTableBuffer buffer.
+
+
+ @param TableKey Returns a key to refer to the ACPI table.
+
+ @retval EFI_SUCCESS The table was successfully inserted
+
+ @retval EFI_INVALID_PARAMETER Either AcpiTableBuffer is NULL,
+ TableKey is NULL, or
+ AcpiTableBufferSize and the size
+ field embedded in the ACPI table
+ pointed to by AcpiTableBuffer
+ are not in sync.
+
+ @retval EFI_OUT_OF_RESOURCES Insufficient resources exist to
+ complete the request.
+ @retval EFI_ACCESS_DENIED The table signature matches a table already
+ present in the system and platform policy
+ does not allow duplicate tables of this type.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_TABLE_INSTALL_ACPI_TABLE)(
+ IN EFI_ACPI_TABLE_PROTOCOL *This,
+ IN VOID *AcpiTableBuffer,
+ IN UINTN AcpiTableBufferSize,
+ OUT UINTN *TableKey
+ );
+
+/**
+
+ The UninstallAcpiTable() function allows a caller to remove an
+ ACPI table. The routine will remove its reference from the
+ RSDT/XSDT. A table is referenced by the TableKey parameter
+ returned from a prior call to InstallAcpiTable(). If an EFI
+ application is running at the time of this call, the relevant
+ EFI_CONFIGURATION_TABLE pointer to the RSDT is no longer
+ considered valid.
+
+ @param This A pointer to a EFI_ACPI_TABLE_PROTOCOL.
+
+ @param TableKey Specifies the table to uninstall. The key was
+ returned from InstallAcpiTable().
+
+ @retval EFI_SUCCESS The table was successfully inserted
+
+ @retval EFI_NOT_FOUND TableKey does not refer to a valid key
+ for a table entry.
+
+ @retval EFI_OUT_OF_RESOURCES Insufficient resources exist to
+ complete the request.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_ACPI_TABLE_UNINSTALL_ACPI_TABLE)(
+ IN EFI_ACPI_TABLE_PROTOCOL *This,
+ IN UINTN TableKey
+ );
+
+///
+/// The EFI_ACPI_TABLE_PROTOCOL provides the ability for a component
+/// to install and uninstall ACPI tables from a platform.
+///
+struct _EFI_ACPI_TABLE_PROTOCOL {
+ EFI_ACPI_TABLE_INSTALL_ACPI_TABLE InstallAcpiTable;
+ EFI_ACPI_TABLE_UNINSTALL_ACPI_TABLE UninstallAcpiTable;
+};
+
+extern EFI_GUID gEfiAcpiTableProtocolGuid;
+
+#endif
diff --git a/sys/contrib/edk2/Include/Protocol/RamDisk.h b/sys/contrib/edk2/Include/Protocol/RamDisk.h
new file mode 100644
--- /dev/null
+++ b/sys/contrib/edk2/Include/Protocol/RamDisk.h
@@ -0,0 +1,100 @@
+/** @file
+ This file defines the EFI RAM Disk Protocol.
+
+ Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Revision Reference:
+ This Protocol is introduced in UEFI Specification 2.6
+
+**/
+
+#ifndef __RAM_DISK_PROTOCOL_H__
+#define __RAM_DISK_PROTOCOL_H__
+
+//
+// EFI RAM Disk Protocol GUID value
+//
+#define EFI_RAM_DISK_PROTOCOL_GUID \
+ { 0xab38a0df, 0x6873, 0x44a9, { 0x87, 0xe6, 0xd4, 0xeb, 0x56, 0x14, 0x84, 0x49 }};
+
+//
+// Forward reference for pure ANSI compatability
+//
+typedef struct _EFI_RAM_DISK_PROTOCOL EFI_RAM_DISK_PROTOCOL;
+
+/**
+ Register a RAM disk with specified address, size and type.
+
+ @param[in] RamDiskBase The base address of registered RAM disk.
+ @param[in] RamDiskSize The size of registered RAM disk.
+ @param[in] RamDiskType The type of registered RAM disk. The GUID can be
+ any of the values defined in section 9.3.6.9, or a
+ vendor defined GUID.
+ @param[in] ParentDevicePath
+ Pointer to the parent device path. If there is no
+ parent device path then ParentDevicePath is NULL.
+ @param[out] DevicePath On return, points to a pointer to the device path
+ of the RAM disk device.
+ If ParentDevicePath is not NULL, the returned
+ DevicePath is created by appending a RAM disk node
+ to the parent device path. If ParentDevicePath is
+ NULL, the returned DevicePath is a RAM disk device
+ path without appending. This function is
+ responsible for allocating the buffer DevicePath
+ with the boot service AllocatePool().
+
+ @retval EFI_SUCCESS The RAM disk is registered successfully.
+ @retval EFI_INVALID_PARAMETER DevicePath or RamDiskType is NULL.
+ RamDiskSize is 0.
+ @retval EFI_ALREADY_STARTED A Device Path Protocol instance to be created
+ is already present in the handle database.
+ @retval EFI_OUT_OF_RESOURCES The RAM disk register operation fails due to
+ resource limitation.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_RAM_DISK_REGISTER_RAMDISK)(
+ IN UINT64 RamDiskBase,
+ IN UINT64 RamDiskSize,
+ IN EFI_GUID *RamDiskType,
+ IN EFI_DEVICE_PATH *ParentDevicePath OPTIONAL,
+ OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
+ );
+
+/**
+ Unregister a RAM disk specified by DevicePath.
+
+ @param[in] DevicePath A pointer to the device path that describes a RAM
+ Disk device.
+
+ @retval EFI_SUCCESS The RAM disk is unregistered successfully.
+ @retval EFI_INVALID_PARAMETER DevicePath is NULL.
+ @retval EFI_UNSUPPORTED The device specified by DevicePath is not a
+ valid ramdisk device path and not supported
+ by the driver.
+ @retval EFI_NOT_FOUND The RAM disk pointed by DevicePath doesn't
+ exist.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_RAM_DISK_UNREGISTER_RAMDISK)(
+ IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
+ );
+
+///
+/// RAM Disk Protocol structure.
+///
+struct _EFI_RAM_DISK_PROTOCOL {
+ EFI_RAM_DISK_REGISTER_RAMDISK Register;
+ EFI_RAM_DISK_UNREGISTER_RAMDISK Unregister;
+};
+
+///
+/// RAM Disk Protocol GUID variable.
+///
+extern EFI_GUID gEfiRamDiskProtocolGuid;
+
+#endif

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