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MdeModulePkg PiSmmCore: Introduce SMM Exit Boot Services and Legacy Boot.

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And also SMM Ready To Boot.

The SMM Exit Boot Service protocol is to be published by the SMM
Foundation code to associate with EFI_EVENT_GROUP_EXIT_BOOT_SERVICES
to notify SMM driver that system enter exit boot services.

The SMM Legacy Boot protocol is to be published by the SMM
Foundation code to associate with EFI_EVENT_LEGACY_BOOT_GUID
to notify SMM driver that system enter legacy boot.

The SMM Ready To Boot protocol is to be published by the SMM
Foundation code to associate with EFI_EVENT_GROUP_READY_TO_BOOT
to notify SMM driver that system enter ready to boot.

After them, any SMM drivers can get protocol notify on what happened
in DXE phase, then there is no need to let each individual SMM driver
to register SMM Communication Handler for that.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17657 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Star Zeng
2015-06-18 09:26:41 +00:00
committed by lzeng14
parent 93e8630a8d
commit 53ec4d7f98
9 changed files with 278 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

122
MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
View File

@@ -1,7 +1,7 @@
/** @file
SMM Core Main Entry Point
Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
distribution. The full text of the license may be found at
@@ -66,7 +66,7 @@ EFI_SMM_SYSTEM_TABLE2 gSmmCoreSmst = {
//
// Flag to determine if the platform has performed a legacy boot.
// If this flag is TRUE, then the runtime code and runtime data associated with the
// SMM IPL are converted to free memory, so the SMM COre must guarantee that is
// SMM IPL are converted to free memory, so the SMM Core must guarantee that is
// does not touch of the code/data associated with the SMM IPL if this flag is TRUE.
//
BOOLEAN mInLegacyBoot = FALSE;
@@ -75,11 +75,13 @@ BOOLEAN mInLegacyBoot = FALSE;
// Table of SMI Handlers that are registered by the SMM Core when it is initialized
//
SMM_CORE_SMI_HANDLERS mSmmCoreSmiHandlers[] = {
{ SmmDriverDispatchHandler, &gEfiEventDxeDispatchGuid, NULL, TRUE },
{ SmmReadyToLockHandler, &gEfiDxeSmmReadyToLockProtocolGuid, NULL, TRUE },
{ SmmLegacyBootHandler, &gEfiEventLegacyBootGuid, NULL, FALSE },
{ SmmEndOfDxeHandler, &gEfiEndOfDxeEventGroupGuid, NULL, FALSE },
{ NULL, NULL, NULL, FALSE }
{ SmmDriverDispatchHandler, &gEfiEventDxeDispatchGuid, NULL, TRUE },
{ SmmReadyToLockHandler, &gEfiDxeSmmReadyToLockProtocolGuid, NULL, TRUE },
{ SmmLegacyBootHandler, &gEfiEventLegacyBootGuid, NULL, FALSE },
{ SmmExitBootServicesHandler, &gEfiEventExitBootServicesGuid, NULL, FALSE },
{ SmmReadyToBootHandler, &gEfiEventReadyToBootGuid, NULL, FALSE },
{ SmmEndOfDxeHandler, &gEfiEndOfDxeEventGroupGuid, NULL, FALSE },
{ NULL, NULL, NULL, FALSE }
};
UINTN mFullSmramRangeCount;
@@ -121,7 +123,8 @@ SmmEfiNotAvailableYetArg5 (
Core uses this signal to know that a Legacy Boot has been performed and that
gSmmCorePrivate that is shared between the UEFI and SMM execution environments can
not be accessed from SMM anymore since that structure is considered free memory by
a legacy OS.
a legacy OS. Then the SMM Core also install SMM Legacy Boot protocol to notify SMM
driver that system enter legacy boot.
@param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param Context Points to an optional handler context which was specified when the handler was registered.
@@ -141,8 +144,109 @@ SmmLegacyBootHandler (
IN OUT UINTN *CommBufferSize OPTIONAL
)
{
EFI_STATUS Status;
EFI_HANDLE SmmHandle;
//
// Install SMM Legacy Boot protocol.
//
SmmHandle = NULL;
Status = SmmInstallProtocolInterface (
&SmmHandle,
&gEdkiiSmmLegacyBootProtocolGuid,
EFI_NATIVE_INTERFACE,
NULL
);
mInLegacyBoot = TRUE;
return EFI_SUCCESS;
SmiHandlerUnRegister (DispatchHandle);
return Status;
}
/**
Software SMI handler that is called when an Exit Boot Services event is signalled.
Then the SMM Core also install SMM Exit Boot Services protocol to notify SMM driver
that system enter exit boot services.
@param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param Context Points to an optional handler context which was specified when the handler was registered.
@param CommBuffer A pointer to a collection of data in memory that will
be conveyed from a non-SMM environment into an SMM environment.
@param CommBufferSize The size of the CommBuffer.
@return Status Code
**/
EFI_STATUS
EFIAPI
SmmExitBootServicesHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *Context, OPTIONAL
IN OUT VOID *CommBuffer, OPTIONAL
IN OUT UINTN *CommBufferSize OPTIONAL
)
{
EFI_STATUS Status;
EFI_HANDLE SmmHandle;
//
// Install SMM Exit Boot Services protocol.
//
SmmHandle = NULL;
Status = SmmInstallProtocolInterface (
&SmmHandle,
&gEdkiiSmmExitBootServicesProtocolGuid,
EFI_NATIVE_INTERFACE,
NULL
);
SmiHandlerUnRegister (DispatchHandle);
return Status;
}
/**
Software SMI handler that is called when an Ready To Boot event is signalled.
Then the SMM Core also install SMM Ready To Boot protocol to notify SMM driver
that system enter ready to boot.
@param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param Context Points to an optional handler context which was specified when the handler was registered.
@param CommBuffer A pointer to a collection of data in memory that will
be conveyed from a non-SMM environment into an SMM environment.
@param CommBufferSize The size of the CommBuffer.
@return Status Code
**/
EFI_STATUS
EFIAPI
SmmReadyToBootHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *Context, OPTIONAL
IN OUT VOID *CommBuffer, OPTIONAL
IN OUT UINTN *CommBufferSize OPTIONAL
)
{
EFI_STATUS Status;
EFI_HANDLE SmmHandle;
//
// Install SMM Ready To Boot protocol.
//
SmmHandle = NULL;
Status = SmmInstallProtocolInterface (
&SmmHandle,
&gEdkiiSmmReadyToBootProtocolGuid,
EFI_NATIVE_INTERFACE,
NULL
);
SmiHandlerUnRegister (DispatchHandle);
return Status;
}
/**