a550d468a6
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the EmulatorPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/** @file
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PEI Services Table Pointer Library.
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This library is used for PEIM which does executed from flash device directly but
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executed in memory.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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Portiions copyrigth (c) 2011, Apple Inc. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Library/PeiServicesTablePointerLib.h>
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#include <Library/DebugLib.h>
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#include <Ppi/MemoryDiscovered.h>
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CONST EFI_PEI_SERVICES **gPeiServices = NULL;
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/**
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Caches a pointer PEI Services Table.
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Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer
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in a CPU specific manner as specified in the CPU binding section of the Platform Initialization
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Pre-EFI Initialization Core Interface Specification.
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If PeiServicesTablePointer is NULL, then ASSERT().
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@param PeiServicesTablePointer The address of PeiServices pointer.
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**/
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VOID
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EFIAPI
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SetPeiServicesTablePointer (
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IN CONST EFI_PEI_SERVICES **PeiServicesTablePointer
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)
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{
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ASSERT (PeiServicesTablePointer != NULL);
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ASSERT (*PeiServicesTablePointer != NULL);
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gPeiServices = PeiServicesTablePointer;
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}
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/**
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Retrieves the cached value of the PEI Services Table pointer.
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Returns the cached value of the PEI Services Table pointer in a CPU specific manner
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as specified in the CPU binding section of the Platform Initialization Pre-EFI
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Initialization Core Interface Specification.
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If the cached PEI Services Table pointer is NULL, then ASSERT().
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@return The pointer to PeiServices.
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**/
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CONST EFI_PEI_SERVICES **
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EFIAPI
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GetPeiServicesTablePointer (
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VOID
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)
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{
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ASSERT (gPeiServices != NULL);
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ASSERT (*gPeiServices != NULL);
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return gPeiServices;
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}
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/**
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Notification service to be called when gEmuThunkPpiGuid is installed.
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@param PeiServices Indirect reference to the PEI Services Table.
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@param NotifyDescriptor Address of the notification descriptor data structure. Type
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EFI_PEI_NOTIFY_DESCRIPTOR is defined above.
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@param Ppi Address of the PPI that was installed.
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@retval EFI_STATUS This function will install a PPI to PPI database. The status
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code will be the code for (*PeiServices)->InstallPpi.
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**/
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EFI_STATUS
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EFIAPI
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PeiServicesTablePointerNotifyCallback (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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)
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{
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gPeiServices = (CONST EFI_PEI_SERVICES **)PeiServices;
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return EFI_SUCCESS;
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}
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EFI_PEI_NOTIFY_DESCRIPTOR mNotifyOnThunkList = {
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(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiPeiMemoryDiscoveredPpiGuid,
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PeiServicesTablePointerNotifyCallback
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};
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/**
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Constructor register notification on when PPI updates. If PPI is
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alreay installed registering the notify will cause the handle to
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run.
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@param FileHandle The handle of FFS header the loaded driver.
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@param PeiServices The pointer to the PEI services.
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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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PeiServicesTablePointerLibConstructor (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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gPeiServices = (CONST EFI_PEI_SERVICES **)PeiServices;
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// register to be told when PeiServices pointer is updated
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Status = (*PeiServices)->NotifyPpi (PeiServices, &mNotifyOnThunkList);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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/**
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Perform CPU specific actions required to migrate the PEI Services Table
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pointer from temporary RAM to permanent RAM.
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For IA32 CPUs, the PEI Services Table pointer is stored in the 4 bytes
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immediately preceding the Interrupt Descriptor Table (IDT) in memory.
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For X64 CPUs, the PEI Services Table pointer is stored in the 8 bytes
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immediately preceding the Interrupt Descriptor Table (IDT) in memory.
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For Itanium and ARM CPUs, a the PEI Services Table Pointer is stored in
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a dedicated CPU register. This means that there is no memory storage
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associated with storing the PEI Services Table pointer, so no additional
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migration actions are required for Itanium or ARM CPUs.
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**/
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VOID
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EFIAPI
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MigratePeiServicesTablePointer (
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VOID
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)
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{
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//
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// PEI Services Table pointer is cached in the global variable. No additional
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// migration actions are required.
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//
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return;
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}
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