From ef059559960700e36619c69cce38eb2cdd1a9a4a Mon Sep 17 00:00:00 2001 From: Liu Date: Thu, 7 May 2020 14:42:03 +0800 Subject: PrmPkg: Publish PRM operation region to support PRM ACPI _DSM invocation A PRM Handler has a 1-to-1 mapping to the corresponding _DSM method. The UUID of the _DSM Method will be passed by the ASL code to the OpRegionHandler which will look up the PRMT Table to extract the pointer of the corresponding PRM Handler. PRM loader pre-builds an SSDT that includes this PRM operation region. In boot time, the PRM loader will load and publish this SSDT, so that in OS runtime ACPI _DSM can invoke the PRM handler by pass the UUID to PRM operation region. The pre-build SSDT also includes a PRMT device as a Sample ACPI _DSM to invoke PRM handler. Cc: Andrew Fish Cc: Kang Gao Cc: Michael D Kinney Cc: Michael Kubacki Cc: Leif Lindholm Cc: Benjamin You Cc: Liu Yun Cc: Ankit Sinha Cc: Nate DeSimone Signed-off-by: Liu Yun Acked-by: Michael D Kinney Acked-by: Liming Gao Acked-by: Leif Lindholm Reviewed-by: Ankit Sinha --- PrmPkg/PrmLoaderDxe/Prm.asl | 87 ++++++++++++++++++++++++++++++++++++ PrmPkg/PrmLoaderDxe/PrmLoaderDxe.c | 34 ++++++++++++++ PrmPkg/PrmLoaderDxe/PrmLoaderDxe.inf | 4 ++ 3 files changed, 125 insertions(+) create mode 100644 PrmPkg/PrmLoaderDxe/Prm.asl (limited to 'PrmPkg') diff --git a/PrmPkg/PrmLoaderDxe/Prm.asl b/PrmPkg/PrmLoaderDxe/Prm.asl new file mode 100644 index 0000000000..76b56de732 --- /dev/null +++ b/PrmPkg/PrmLoaderDxe/Prm.asl @@ -0,0 +1,87 @@ +/** @file + The definition block in ACPI table for PRM Operation Region + + Copyright (c) 2020, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +DefinitionBlock ( + "Prm.aml", + "SSDT", + 0x01, + "OEMID", + "PRMOPREG", + 0x3000 + ) +{ + Scope (\_SB) + { + // + // PRM Bridge Device + // + + Device (PRMB) + { + Name (_HID, "80860222") + Name (_CID, "80860222") + Name (_DDN, "PRM Bridge Device") + Name (_STA, 0xF) + OperationRegion (OPR1, 0x80, 0, 16) + Field (OPR1, DWordAcc, NoLock, Preserve) //Make it ByteAcc for parameter validation + { + Var0, 128 + } + Method (SETV, 1, Serialized) + { + CopyObject (Arg0, \_SB.PRMB.Var0) + } + } + + // + // PRM Test Device + // + + Device (PRMT) + { + Name (_HID, "80860223") + Name (_CID, "80860223") + Name (_DDN, "PRM Test Device") + Name (_STA, 0xF) + Name (BUF1, Buffer(16) + { + 0x5F, 0xAD, 0xF2, 0xD5, 0x47, 0xA3, 0x3E, 0x4D, //Guid_0 + 0x87, 0xBC, 0xC2, 0xCE, 0x63, 0x02, 0x9C, 0xC8, //Guid_1 + }) + Name (BUF2, Buffer(16) + { + 0xC3, 0xAD, 0xE7, 0xA9, 0xD0, 0x8C, 0x9A, 0x42, //Guid_0 + 0x89, 0x15, 0x10, 0x94, 0x6E, 0xBD, 0xE3, 0x18, //Guid_1 + }) + Name (BUF3, Buffer(16) + { + 0x14, 0xC2, 0x88, 0xB6, 0x81, 0x40, 0xEB, 0x4E, //Guid_0 + 0x8D, 0x26, 0x1E, 0xB5, 0xA3, 0xBC, 0xF1, 0x1A, //Guid_1 + }) + Method (NTST) + { + \_SB.PRMB.SETV (BUF1) + } + Method (TST1) + { + \_SB.PRMB.SETV (BUF1) + } + Method (TST2) + { + \_SB.PRMB.SETV (BUF2) + } + Method (TST3) + { + \_SB.PRMB.SETV (BUF3) + } + } + } + +} // End of Definition Block + + + diff --git a/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.c b/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.c index 5fda4c1b01..5e14b8e09d 100644 --- a/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.c +++ b/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.c @@ -3,6 +3,7 @@ This file contains the implementation for a Platform Runtime Mechanism (PRM) loader driver. + Copyright (c) 2020, Intel Corporation. All rights reserved.
Copyright (c) Microsoft Corporation SPDX-License-Identifier: BSD-2-Clause-Patent @@ -19,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -809,6 +811,8 @@ PublishPrmAcpiTable ( EFI_STATUS Status; EFI_ACPI_TABLE_PROTOCOL *AcpiTableProtocol; UINTN TableKey; + EFI_ACPI_DESCRIPTION_HEADER *Ssdt; + UINTN SsdtSize; if (PrmAcpiDescriptionTable == NULL || PrmAcpiDescriptionTable->Header.Signature != PRM_TABLE_SIGNATURE) { return EFI_INVALID_PARAMETER; @@ -832,6 +836,36 @@ PublishPrmAcpiTable ( } ASSERT_EFI_ERROR (Status); + // + // Load SSDT + // + Status = GetSectionFromFv ( + &gEfiCallerIdGuid, + EFI_SECTION_RAW, + 0, + (VOID **) &Ssdt, + &SsdtSize + ); + ASSERT_EFI_ERROR (Status); + DEBUG ((DEBUG_INFO, "%a %a: SSDT loaded ...\n", _DBGMSGID_, __FUNCTION__)); + + // + // Update OEM ID + // + CopyMem (&Ssdt->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Ssdt->OemId)); + + // + // Publish the SSDT. Table is re-checksumed. + // + TableKey = 0; + Status = AcpiTableProtocol->InstallAcpiTable ( + AcpiTableProtocol, + Ssdt, + SsdtSize, + &TableKey + ); + ASSERT_EFI_ERROR (Status); + return Status; } diff --git a/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.inf b/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.inf index 643e1a7989..016ced4b37 100644 --- a/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.inf +++ b/PrmPkg/PrmLoaderDxe/PrmLoaderDxe.inf @@ -5,6 +5,7 @@ # PRM handlers within those modules into a PRMT ACPI table such that the handlers are # made available for invocation in the OS. # +# Copyright (c) 2020, Intel Corporation. All rights reserved.
# Copyright (c) Microsoft Corporation # # SPDX-License-Identifier: BSD-2-Clause-Patent @@ -23,6 +24,7 @@ PrmAcpiTable.h PrmLoader.h PrmLoaderDxe.c + Prm.asl [Packages] MdePkg/MdePkg.dec @@ -42,6 +44,8 @@ UefiBootServicesTableLib UefiDriverEntryPoint UefiLib + DxeServicesLib + PcdLib [Pcd] gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultOemId ## CONSUMES -- cgit v1.2.3