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280 lines
9.3 KiB
C
280 lines
9.3 KiB
C
/** @file
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This file deals with Architecture Protocol (AP) registration in
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the Dxe Core. The mArchProtocols[] array represents a list of
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events that represent the Architectural Protocols.
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Copyright (c) 2006 - 2018, 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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#include "DxeMain.h"
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//
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// DXE Core Global Variables for all of the Architectural Protocols.
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// If a protocol is installed mArchProtocols[].Present will be TRUE.
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//
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// CoreNotifyOnArchProtocolInstallation () fills in mArchProtocols[].Event
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// and mArchProtocols[].Registration as it creates events for every array
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// entry.
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//
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EFI_CORE_PROTOCOL_NOTIFY_ENTRY mArchProtocols[] = {
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{ &gEfiSecurityArchProtocolGuid, (VOID **)&gSecurity, NULL, NULL, FALSE },
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{ &gEfiCpuArchProtocolGuid, (VOID **)&gCpu, NULL, NULL, FALSE },
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{ &gEfiMetronomeArchProtocolGuid, (VOID **)&gMetronome, NULL, NULL, FALSE },
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{ &gEfiTimerArchProtocolGuid, (VOID **)&gTimer, NULL, NULL, FALSE },
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{ &gEfiBdsArchProtocolGuid, (VOID **)&gBds, NULL, NULL, FALSE },
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{ &gEfiWatchdogTimerArchProtocolGuid, (VOID **)&gWatchdogTimer, NULL, NULL, FALSE },
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{ &gEfiRuntimeArchProtocolGuid, (VOID **)&gRuntime, NULL, NULL, FALSE },
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{ &gEfiVariableArchProtocolGuid, (VOID **)NULL, NULL, NULL, FALSE },
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{ &gEfiVariableWriteArchProtocolGuid, (VOID **)NULL, NULL, NULL, FALSE },
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{ &gEfiCapsuleArchProtocolGuid, (VOID **)NULL, NULL, NULL, FALSE },
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{ &gEfiMonotonicCounterArchProtocolGuid, (VOID **)NULL, NULL, NULL, FALSE },
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{ &gEfiResetArchProtocolGuid, (VOID **)NULL, NULL, NULL, FALSE },
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{ &gEfiRealTimeClockArchProtocolGuid, (VOID **)NULL, NULL, NULL, FALSE },
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{ NULL, (VOID **)NULL, NULL, NULL, FALSE }
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};
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//
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// Optional protocols that the DXE Core will use if they are present
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//
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EFI_CORE_PROTOCOL_NOTIFY_ENTRY mOptionalProtocols[] = {
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{ &gEfiSecurity2ArchProtocolGuid, (VOID **)&gSecurity2, NULL, NULL, FALSE },
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{ &gEfiSmmBase2ProtocolGuid, (VOID **)&gSmmBase2, NULL, NULL, FALSE },
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{ NULL, (VOID **)NULL, NULL, NULL, FALSE }
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};
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//
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// Following is needed to display missing architectural protocols in debug builds
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//
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typedef struct {
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EFI_GUID *ProtocolGuid;
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CHAR8 *GuidString;
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} GUID_TO_STRING_PROTOCOL_ENTRY;
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GLOBAL_REMOVE_IF_UNREFERENCED CONST GUID_TO_STRING_PROTOCOL_ENTRY mMissingProtocols[] = {
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{ &gEfiSecurityArchProtocolGuid, "Security" },
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{ &gEfiCpuArchProtocolGuid, "CPU" },
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{ &gEfiMetronomeArchProtocolGuid, "Metronome" },
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{ &gEfiTimerArchProtocolGuid, "Timer" },
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{ &gEfiBdsArchProtocolGuid, "Bds" },
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{ &gEfiWatchdogTimerArchProtocolGuid, "Watchdog Timer" },
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{ &gEfiRuntimeArchProtocolGuid, "Runtime" },
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{ &gEfiVariableArchProtocolGuid, "Variable" },
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{ &gEfiVariableWriteArchProtocolGuid, "Variable Write" },
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{ &gEfiCapsuleArchProtocolGuid, "Capsule" },
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{ &gEfiMonotonicCounterArchProtocolGuid, "Monotonic Counter" },
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{ &gEfiResetArchProtocolGuid, "Reset" },
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{ &gEfiRealTimeClockArchProtocolGuid, "Real Time Clock" },
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{ NULL, "" }
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};
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/**
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Return TRUE if all AP services are available.
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@retval EFI_SUCCESS All AP services are available
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@retval EFI_NOT_FOUND At least one AP service is not available
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**/
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EFI_STATUS
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CoreAllEfiServicesAvailable (
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VOID
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)
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{
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EFI_CORE_PROTOCOL_NOTIFY_ENTRY *Entry;
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for (Entry = mArchProtocols; Entry->ProtocolGuid != NULL; Entry++) {
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if (!Entry->Present) {
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return EFI_NOT_FOUND;
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}
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}
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return EFI_SUCCESS;
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}
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/**
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Notification event handler registered by CoreNotifyOnArchProtocolInstallation ().
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This notify function is registered for every architectural protocol. This handler
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updates mArchProtocol[] array entry with protocol instance data and sets it's
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present flag to TRUE. If any constructor is required it is executed. The EFI
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System Table headers are updated.
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@param Event The Event that is being processed, not used.
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@param Context Event Context, not used.
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**/
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VOID
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EFIAPI
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GenericProtocolNotify (
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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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EFI_STATUS Status;
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EFI_CORE_PROTOCOL_NOTIFY_ENTRY *Entry;
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VOID *Protocol;
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LIST_ENTRY *Link;
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LIST_ENTRY TempLinkNode;
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Protocol = NULL;
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//
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// Get Entry from Context
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//
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Entry = (EFI_CORE_PROTOCOL_NOTIFY_ENTRY *)Context;
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//
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// See if the expected protocol is present in the handle database
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//
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Status = CoreLocateProtocol (Entry->ProtocolGuid, Entry->Registration, &Protocol);
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if (EFI_ERROR(Status)) {
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return;
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}
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//
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// Mark the protocol as present
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//
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Entry->Present = TRUE;
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//
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// Update protocol global variable if one exists. Entry->Protocol points to a global variable
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// if one exists in the DXE core for this Architectural Protocol
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//
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if (Entry->Protocol != NULL) {
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*(Entry->Protocol) = Protocol;
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}
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//
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// Do special operations for Architectural Protocols
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//
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if (CompareGuid (Entry->ProtocolGuid, &gEfiTimerArchProtocolGuid)) {
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//
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// Register the Core timer tick handler with the Timer AP
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//
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gTimer->RegisterHandler (gTimer, CoreTimerTick);
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}
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if (CompareGuid (Entry->ProtocolGuid, &gEfiRuntimeArchProtocolGuid)) {
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//
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// When runtime architectural protocol is available, updates CRC32 in the Debug Table
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//
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CoreUpdateDebugTableCrc32 ();
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//
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// Update the Runtime Architectural protocol with the template that the core was
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// using so there would not need to be a dependency on the Runtime AP
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//
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//
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// Copy all the registered Image to new gRuntime protocol
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//
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for (Link = gRuntimeTemplate.ImageHead.ForwardLink; Link != &gRuntimeTemplate.ImageHead; Link = TempLinkNode.ForwardLink) {
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CopyMem(&TempLinkNode, Link, sizeof(LIST_ENTRY));
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InsertTailList (&gRuntime->ImageHead, Link);
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}
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//
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// Copy all the registered Event to new gRuntime protocol
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//
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for (Link = gRuntimeTemplate.EventHead.ForwardLink; Link != &gRuntimeTemplate.EventHead; Link = TempLinkNode.ForwardLink) {
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CopyMem(&TempLinkNode, Link, sizeof(LIST_ENTRY));
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InsertTailList (&gRuntime->EventHead, Link);
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}
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//
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// Clean up gRuntimeTemplate
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//
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gRuntimeTemplate.ImageHead.ForwardLink = &gRuntimeTemplate.ImageHead;
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gRuntimeTemplate.ImageHead.BackLink = &gRuntimeTemplate.ImageHead;
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gRuntimeTemplate.EventHead.ForwardLink = &gRuntimeTemplate.EventHead;
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gRuntimeTemplate.EventHead.BackLink = &gRuntimeTemplate.EventHead;
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}
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//
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// It's over kill to do them all every time, but it saves a lot of code.
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//
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CalculateEfiHdrCrc (&gDxeCoreRT->Hdr);
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CalculateEfiHdrCrc (&gBS->Hdr);
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CalculateEfiHdrCrc (&gDxeCoreST->Hdr);
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CalculateEfiHdrCrc (&gDxeCoreDS->Hdr);
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}
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/**
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Creates an event for each entry in a table that is fired everytime a Protocol
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of a specific type is installed.
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@param Entry Pointer to EFI_CORE_PROTOCOL_NOTIFY_ENTRY.
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**/
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VOID
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CoreNotifyOnProtocolEntryTable (
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EFI_CORE_PROTOCOL_NOTIFY_ENTRY *Entry
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)
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{
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EFI_STATUS Status;
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for (; Entry->ProtocolGuid != NULL; Entry++) {
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//
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// Create the event
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//
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Status = CoreCreateEvent (
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EVT_NOTIFY_SIGNAL,
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TPL_CALLBACK,
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GenericProtocolNotify,
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Entry,
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&Entry->Event
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);
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ASSERT_EFI_ERROR(Status);
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//
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// Register for protocol notifactions on this event
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//
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Status = CoreRegisterProtocolNotify (
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Entry->ProtocolGuid,
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Entry->Event,
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&Entry->Registration
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);
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ASSERT_EFI_ERROR(Status);
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}
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}
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/**
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Creates an events for the Architectural Protocols and the optional protocols
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that are fired everytime a Protocol of a specific type is installed.
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**/
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VOID
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CoreNotifyOnProtocolInstallation (
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VOID
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)
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{
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CoreNotifyOnProtocolEntryTable (mArchProtocols);
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CoreNotifyOnProtocolEntryTable (mOptionalProtocols);
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}
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/**
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Displays Architectural protocols that were not loaded and are required for DXE
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core to function. Only used in Debug Builds.
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**/
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VOID
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CoreDisplayMissingArchProtocols (
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VOID
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)
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{
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EFI_CORE_PROTOCOL_NOTIFY_ENTRY *Entry;
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CONST GUID_TO_STRING_PROTOCOL_ENTRY *MissingEntry;
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for (Entry = mArchProtocols; Entry->ProtocolGuid != NULL; Entry++) {
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if (!Entry->Present) {
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for (MissingEntry = mMissingProtocols; MissingEntry->ProtocolGuid != NULL; MissingEntry++) {
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if (CompareGuid (Entry->ProtocolGuid, MissingEntry->ProtocolGuid)) {
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DEBUG ((DEBUG_ERROR, "\n%a Arch Protocol not present!!\n", MissingEntry->GuidString));
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break;
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}
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}
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}
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}
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}
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