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MdeModulePkg: Make HII configuration settings available to OS runtime

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This feature is aimed to allow OS make use of the HII database
during runtime. In this case, the contents of the HII Database
is exported to a buffer. The pointer to the buffer is placed
in the EFI System Configuration Table, where it can be retrieved
by an OS application.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Brian J. Johnson <bjohnson@sgi.com>
Cc: Andrew Fish <afish@apple.com>
Cc: El-Haj-Mahmoud Samer <samer.el-haj-mahmoud@hpe.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Dandan Bi
2016-03-02 16:53:50 +08:00
committed by Feng Tian
parent 89a77e4051
commit 8a45f80eda
7 changed files with 259 additions and 5 deletions
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42
MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseEntry.c
View File

@@ -2,7 +2,7 @@
This file contains the entry code to the HII database, which is defined by
UEFI 2.1 specification.
Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2007 - 2016, 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
@@ -20,6 +20,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
// Global variables
//
EFI_EVENT gHiiKeyboardLayoutChanged;
BOOLEAN gExportAfterReadyToBoot = FALSE;
HII_DATABASE_PRIVATE_DATA mPrivate = {
HII_DATABASE_PRIVATE_DATA_SIGNATURE,
@@ -123,6 +124,30 @@ KeyboardLayoutChangeNullEvent (
return;
}
/**
On Ready To Boot Services Event notification handler.
To trigger the function that to export the Hii Configuration setting.
@param[in] Event Event whose notification function is being invoked
@param[in] Context Pointer to the notification function's context
**/
VOID
EFIAPI
OnReadyToBoot (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// When ready to boot, we begin to export the HiiDatabase date.
// And hook all the possible HiiDatabase change actions to export data.
//
HiiGetConfigurationSetting(&mPrivate.HiiDatabase);
gExportAfterReadyToBoot = TRUE;
}
/**
Initialize HII Database.
@@ -135,6 +160,8 @@ KeyboardLayoutChangeNullEvent (
gHiiKeyboardLayoutChanged. Check gBS->CreateEventEx for
details. Or failed to insatll the protocols.
Check gBS->InstallMultipleProtocolInterfaces for details.
Or failed to create Ready To Boot Event.
Check EfiCreateEventReadyToBootEx for details.
**/
EFI_STATUS
@@ -146,6 +173,7 @@ InitializeHiiDatabase (
{
EFI_STATUS Status;
EFI_HANDLE Handle;
EFI_EVENT ReadyToBootEvent;
//
// There will be only one HII Database in the system
@@ -211,6 +239,18 @@ InitializeHiiDatabase (
}
if (FeaturePcdGet(PcdHiiOsRuntimeSupport)) {
Status = EfiCreateEventReadyToBootEx (
TPL_CALLBACK,
OnReadyToBoot,
NULL,
&ReadyToBootEvent
);
if (EFI_ERROR (Status)) {
return Status;
}
}
return Status;
}