mirror of https://github.com/acidanthera/audk.git
328 lines
11 KiB
C
328 lines
11 KiB
C
/** @file
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Library constructor & destructor, event handlers, and other internal worker functions.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "ReportStatusCodeLibInternal.h"
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EFI_EVENT mVirtualAddressChangeEvent;
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EFI_EVENT mExitBootServicesEvent;
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EFI_STATUS_CODE_DATA *mStatusCodeData;
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BOOLEAN mInSmm;
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EFI_SMM_BASE_PROTOCOL *mSmmBase;
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EFI_RUNTIME_SERVICES *mInternalRT;
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BOOLEAN mHaveExitedBootServices = FALSE;
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EFI_REPORT_STATUS_CODE mReportStatusCode = NULL;
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EFI_SMM_STATUS_CODE_PROTOCOL *mSmmStatusCodeProtocol;
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/**
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Locates and caches SMM Status Code Protocol.
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**/
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VOID
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SmmStatusCodeInitialize (
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VOID
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)
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{
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EFI_STATUS Status;
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Status = gBS->LocateProtocol (&gEfiSmmStatusCodeProtocolGuid, NULL, (VOID **) &mSmmStatusCodeProtocol);
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if (EFI_ERROR (Status)) {
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mSmmStatusCodeProtocol = NULL;
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}
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}
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/**
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Report status code via SMM Status Code Protocol.
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@param Type Indicates the type of status code being reported.
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@param Value Describes the current status of a hardware or software entity.
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This included information about the class and subclass that is used to classify the entity
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as well as an operation. For progress codes, the operation is the current activity.
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For error codes, it is the exception. For debug codes, it is not defined at this time.
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@param Instance The enumeration of a hardware or software entity within the system.
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A system may contain multiple entities that match a class/subclass pairing.
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The instance differentiates between them. An instance of 0 indicates that instance information is unavailable,
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not meaningful, or not relevant. Valid instance numbers start with 1.
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@param CallerId This optional parameter may be used to identify the caller.
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This parameter allows the status code driver to apply different rules to different callers.
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@param Data This optional parameter may be used to pass additional data
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@retval EFI_SUCCESS Always return EFI_SUCCESS.
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**/
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EFI_STATUS
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SmmStatusCodeReport (
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IN EFI_STATUS_CODE_TYPE Type,
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IN EFI_STATUS_CODE_VALUE Value,
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IN UINT32 Instance,
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IN EFI_GUID *CallerId OPTIONAL,
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IN EFI_STATUS_CODE_DATA *Data OPTIONAL
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)
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{
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if (mSmmStatusCodeProtocol != NULL) {
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(mSmmStatusCodeProtocol->ReportStatusCode) (mSmmStatusCodeProtocol, Type, Value, Instance, CallerId, Data);
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}
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return EFI_SUCCESS;
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}
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/**
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Locate the report status code service.
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In SMM, it tries to retrieve SMM Status Code Protocol.
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Otherwise, it first tries to retrieve ReportStatusCode() in Runtime Services Table.
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If not found, it then tries to retrieve ReportStatusCode() API of Report Status Code Protocol.
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@return Function pointer to the report status code service.
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NULL is returned if no status code service is available.
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**/
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EFI_REPORT_STATUS_CODE
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InternalGetReportStatusCode (
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VOID
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)
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{
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EFI_STATUS_CODE_PROTOCOL *StatusCodeProtocol;
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EFI_STATUS Status;
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if (mInSmm) {
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return (EFI_REPORT_STATUS_CODE) SmmStatusCodeReport;
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} else if (mInternalRT != NULL && mInternalRT->Hdr.Revision < 0x20000) {
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return ((FRAMEWORK_EFI_RUNTIME_SERVICES*)mInternalRT)->ReportStatusCode;
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} else if (!mHaveExitedBootServices) {
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//
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// Check gBS just in case. ReportStatusCode is called before gBS is initialized.
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//
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if (gBS != NULL) {
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Status = gBS->LocateProtocol (&gEfiStatusCodeRuntimeProtocolGuid, NULL, (VOID**)&StatusCodeProtocol);
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if (!EFI_ERROR (Status) && StatusCodeProtocol != NULL) {
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return StatusCodeProtocol->ReportStatusCode;
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}
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}
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}
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return NULL;
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}
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/**
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Internal worker function that reports a status code through the status code service.
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If status code service is not cached, then this function checks if status code service is
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available in system. If status code service is not available, then EFI_UNSUPPORTED is
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returned. If status code service is present, then it is cached in mReportStatusCode.
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Finally this function reports status code through the status code service.
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@param Type Status code type.
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@param Value Status code value.
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@param Instance Status code instance number.
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@param CallerId Pointer to a GUID that identifies the caller of this
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function. This is an optional parameter that may be
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NULL.
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@param Data Pointer to the extended data buffer. This is an
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optional parameter that may be NULL.
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@retval EFI_SUCCESS The status code was reported.
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@retval EFI_UNSUPPORTED Status code service is not available.
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@retval EFI_UNSUPPORTED Status code type is not supported.
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**/
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EFI_STATUS
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InternalReportStatusCode (
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IN EFI_STATUS_CODE_TYPE Type,
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IN EFI_STATUS_CODE_VALUE Value,
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IN UINT32 Instance,
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IN CONST EFI_GUID *CallerId OPTIONAL,
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IN EFI_STATUS_CODE_DATA *Data OPTIONAL
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)
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{
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if ((ReportProgressCodeEnabled() && ((Type) & EFI_STATUS_CODE_TYPE_MASK) == EFI_PROGRESS_CODE) ||
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(ReportErrorCodeEnabled() && ((Type) & EFI_STATUS_CODE_TYPE_MASK) == EFI_ERROR_CODE) ||
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(ReportDebugCodeEnabled() && ((Type) & EFI_STATUS_CODE_TYPE_MASK) == EFI_DEBUG_CODE)) {
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//
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// If mReportStatusCode is NULL, then check if status code service is available in system.
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//
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if (mReportStatusCode == NULL) {
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mReportStatusCode = InternalGetReportStatusCode ();
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if (mReportStatusCode == NULL) {
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return EFI_UNSUPPORTED;
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}
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}
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//
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// A status code service is present in system, so pass in all the parameters to the service.
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//
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return (*mReportStatusCode) (Type, Value, Instance, (EFI_GUID *)CallerId, Data);
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}
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return EFI_UNSUPPORTED;
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}
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/**
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Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
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@param Event Event whose notification function is being invoked.
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@param Context Pointer to the notification function's context
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**/
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VOID
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EFIAPI
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ReportStatusCodeLibVirtualAddressChange (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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if (mReportStatusCode != NULL) {
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mInternalRT->ConvertPointer (0, (VOID **) &mReportStatusCode);
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}
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mInternalRT->ConvertPointer (0, (VOID **) &mStatusCodeData);
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mInternalRT->ConvertPointer (0, (VOID **) &mInternalRT);
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}
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/**
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Notification function of EVT_SIGNAL_EXIT_BOOT_SERVICES.
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@param Event Event whose notification function is being invoked.
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@param Context Pointer to the notification function's context
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**/
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VOID
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EFIAPI
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ReportStatusCodeLibExitBootServices (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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mHaveExitedBootServices = TRUE;
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}
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/**
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The constructor function of SMM Runtime DXE Report Status Code Lib.
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This function allocates memory for extended status code data, caches
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the report status code service, and registers events.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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ReportStatusCodeLibConstruct (
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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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EFI_STATUS Status;
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//
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// If in SMM mode, then allocates memory from SMRAM for extended status code data.
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//
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Status = gBS->LocateProtocol (&gEfiSmmBaseProtocolGuid, NULL, (VOID **) &mSmmBase);
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if (!EFI_ERROR (Status)) {
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mSmmBase->InSmm (mSmmBase, &mInSmm);
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if (mInSmm) {
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Status = mSmmBase->SmmAllocatePool (
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mSmmBase,
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EfiRuntimeServicesData,
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sizeof (EFI_STATUS_CODE_DATA) + EFI_STATUS_CODE_DATA_MAX_SIZE,
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(VOID **) &mStatusCodeData
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);
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ASSERT_EFI_ERROR (Status);
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SmmStatusCodeInitialize ();
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return EFI_SUCCESS;
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}
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}
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//
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// If not in SMM mode, then allocate runtime memory for extended status code data.
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//
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// Library should not use the gRT directly, for it may be converted by other library instance.
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//
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mInternalRT = gRT;
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mInSmm = FALSE;
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mStatusCodeData = AllocateRuntimePool (sizeof (EFI_STATUS_CODE_DATA) + EFI_STATUS_CODE_DATA_MAX_SIZE);
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ASSERT (mStatusCodeData != NULL);
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//
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// Cache the report status code service
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//
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mReportStatusCode = InternalGetReportStatusCode ();
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//
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// Register notify function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE
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//
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_NOTIFY,
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ReportStatusCodeLibVirtualAddressChange,
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NULL,
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&gEfiEventVirtualAddressChangeGuid,
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&mVirtualAddressChangeEvent
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);
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ASSERT_EFI_ERROR (Status);
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//
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// Register notify function for EVT_SIGNAL_EXIT_BOOT_SERVICES
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//
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_NOTIFY,
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ReportStatusCodeLibExitBootServices,
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NULL,
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&gEfiEventExitBootServicesGuid,
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&mExitBootServicesEvent
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);
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ASSERT_EFI_ERROR (Status);
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return EFI_SUCCESS;
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}
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/**
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The destructor function of SMM Runtime DXE Report Status Code Lib.
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The destructor function frees memory allocated by constructor, and closes related events.
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It will ASSERT() if that related operation fails and it will always return EFI_SUCCESS.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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ReportStatusCodeLibDestruct (
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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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EFI_STATUS Status;
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if (!mInSmm) {
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ASSERT (gBS != NULL);
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Status = gBS->CloseEvent (mVirtualAddressChangeEvent);
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ASSERT_EFI_ERROR (Status);
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Status = gBS->CloseEvent (mExitBootServicesEvent);
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ASSERT_EFI_ERROR (Status);
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FreePool (mStatusCodeData);
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} else {
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mSmmBase->SmmFreePool (mSmmBase, mStatusCodeData);
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}
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return EFI_SUCCESS;
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}
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