c1a7a50f67
Removes the expectation that the parameter buffer contain an OS debug print service at the beginning of the buffer. All supporting code related to printing is also removed. Cc: Andrew Fish <afish@apple.com> Cc: Kang Gao <kang.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Michael Kubacki <michael.kubacki@microsoft.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Benjamin You <benjamin.you@intel.com> Cc: Liu Yun <yun.y.liu@intel.com> Cc: Ankit Sinha <ankit.sinha@intel.com> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Acked-by: Michael D Kinney <michael.d.kinney@intel.com> Acked-by: Liming Gao <gaoliming@byosoft.com.cn> Acked-by: Leif Lindholm <quic_llindhol@quicinc.com> Reviewed-by: Ankit Sinha <ankit.sinha@intel.com>
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/** @file
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This PRM Module demonstrates how to configure the module data resources in the firmware boot environment
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and access those resources in a PRM handler at OS runtime.
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Copyright (c) Microsoft Corporation
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PrmModule.h>
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#include <Library/BaseLib.h>
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#include <Library/PrintLib.h>
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#include <Library/UefiLib.h>
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#include <Samples/PrmSampleContextBufferModule/Include/StaticData.h>
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//
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// PRM Handler GUIDs
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//
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// {e1466081-7562-430f-896b-b0e523dc335a}
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#define CHECK_STATIC_DATA_BUFFER_PRM_HANDLER_GUID {0xe1466081, 0x7562, 0x430f, {0x89, 0x6b, 0xb0, 0xe5, 0x23, 0xdc, 0x33, 0x5a}}
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/**
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A sample Platform Runtime Mechanism (PRM) handler.
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This sample handler checks that a static data buffer can be accessed from a given context buffer.
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@param[in] ParameterBuffer A pointer to the PRM handler parameter buffer
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@param[in] ContextBUffer A pointer to the PRM handler context buffer
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@retval EFI_STATUS The PRM handler executed successfully.
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@retval Others An error occurred in the PRM handler.
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**/
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PRM_HANDLER_EXPORT (CheckStaticDataBufferPrmHandler)
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{
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if (ContextBuffer == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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if (ContextBuffer->StaticDataBuffer == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Verify PRM data buffer signature is valid
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//
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if (
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ContextBuffer->Signature != PRM_CONTEXT_BUFFER_SIGNATURE ||
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ContextBuffer->StaticDataBuffer->Header.Signature != PRM_DATA_BUFFER_HEADER_SIGNATURE) {
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return EFI_NOT_FOUND;
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}
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return EFI_SUCCESS;
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}
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//
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// Register the PRM export information for this PRM Module
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//
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PRM_MODULE_EXPORT (
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PRM_HANDLER_EXPORT_ENTRY (CHECK_STATIC_DATA_BUFFER_PRM_HANDLER_GUID, CheckStaticDataBufferPrmHandler)
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);
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/**
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Module entry point.
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@param[in] ImageHandle The image handle.
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@param[in] SystemTable A pointer to the system table.
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@retval EFI_SUCCESS This function always returns success.
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**/
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EFI_STATUS
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EFIAPI
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PrmSampleContextBufferModuleInit (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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return EFI_SUCCESS;
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}
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