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@@ -1,7 +1,7 @@
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/** @file
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CPU exception handler library implemenation for DXE modules.
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- Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>
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+ Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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@@ -17,8 +17,8 @@ CONST UINTN mDoFarReturnFlag = 0;
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RESERVED_VECTORS_DATA mReservedVectorsData[CPU_INTERRUPT_NUM];
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EFI_CPU_INTERRUPT_HANDLER mExternalInterruptHandlerTable[CPU_INTERRUPT_NUM];
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EXCEPTION_HANDLER_DATA mExceptionHandlerData = {
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- 0, // To be fixed
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- 0, // To be fixed
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+ CPU_INTERRUPT_NUM,
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+ 0, // To be fixed
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mReservedVectorsData,
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mExternalInterruptHandlerTable
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};
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@@ -69,76 +69,6 @@ InitializeCpuExceptionHandlers (
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return InitializeCpuExceptionHandlersWorker (VectorInfo, &mExceptionHandlerData);
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}
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-/**
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- Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
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-
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- Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
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- persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
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- If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
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- If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
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-
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- @param[in] VectorInfo Pointer to reserved vector list.
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-
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- @retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
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- with default interrupt/exception handlers.
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- @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
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- @retval EFI_UNSUPPORTED This function is not supported.
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-
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-**/
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-EFI_STATUS
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-EFIAPI
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-InitializeCpuInterruptHandlers (
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- IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
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- )
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-{
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- EFI_STATUS Status;
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- IA32_IDT_GATE_DESCRIPTOR *IdtTable;
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- IA32_DESCRIPTOR IdtDescriptor;
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- UINTN IdtEntryCount;
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- EXCEPTION_HANDLER_TEMPLATE_MAP TemplateMap;
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-
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- SetMem ((VOID *)mReservedVectorsData, sizeof (RESERVED_VECTORS_DATA) * CPU_INTERRUPT_NUM, 0xff);
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- if (VectorInfo != NULL) {
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- Status = ReadAndVerifyVectorInfo (VectorInfo, mReservedVectorsData, CPU_INTERRUPT_NUM);
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- if (EFI_ERROR (Status)) {
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- return EFI_INVALID_PARAMETER;
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- }
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- }
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-
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- //
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- // Read IDT descriptor and calculate IDT size
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- //
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- AsmReadIdtr (&IdtDescriptor);
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- IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
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- if (IdtEntryCount > CPU_INTERRUPT_NUM) {
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- IdtEntryCount = CPU_INTERRUPT_NUM;
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- }
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-
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- //
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- // Create Interrupt Descriptor Table and Copy the old IDT table in
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- //
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- IdtTable = AllocateZeroPool (sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM);
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- ASSERT (IdtTable != NULL);
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- CopyMem (IdtTable, (VOID *)IdtDescriptor.Base, sizeof (IA32_IDT_GATE_DESCRIPTOR) * IdtEntryCount);
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-
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- AsmGetTemplateAddressMap (&TemplateMap);
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- ASSERT (TemplateMap.ExceptionStubHeaderSize <= HOOKAFTER_STUB_SIZE);
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-
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- mExceptionHandlerData.IdtEntryCount = CPU_INTERRUPT_NUM;
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- InitializeSpinLock (&mExceptionHandlerData.DisplayMessageSpinLock);
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-
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- UpdateIdtTable (IdtTable, &TemplateMap, &mExceptionHandlerData);
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-
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- //
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- // Load Interrupt Descriptor Table
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- //
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- IdtDescriptor.Base = (UINTN)IdtTable;
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- IdtDescriptor.Limit = (UINT16)(sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM - 1);
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- AsmWriteIdtr ((IA32_DESCRIPTOR *)&IdtDescriptor);
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-
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- return EFI_SUCCESS;
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-}
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-
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/**
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Registers a function to be called from the processor interrupt handler.
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@@ -146,8 +76,8 @@ InitializeCpuInterruptHandlers (
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interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
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handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
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The installed handler is called once for each processor interrupt or exception.
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- NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
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- InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
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+ NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
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+ otherwise EFI_UNSUPPORTED returned.
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@param[in] InterruptType Defines which interrupt or exception to hook.
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@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
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