mirror of https://github.com/acidanthera/audk.git
ArmPlatformPkg/Bds: Signal when the variable 'Fdt' has been updated
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16589 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin
oliviermartin
parent
f2c730d312
commit
5c2d456b96
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@ -53,6 +53,7 @@
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gEfiEndOfDxeEventGroupGuid
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gEfiFileInfoGuid
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gFdtTableGuid
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gArmPlatformUpdateFdtEventGuid
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[Protocols]
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gEfiBlockIoProtocolGuid
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@ -1,6 +1,6 @@
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/** @file
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*
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* Copyright (c) 2014, ARM Limited. All rights reserved.
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* Copyright (c) 2014-2015, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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@ -28,6 +28,7 @@
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Guid/ArmGlobalVariableHob.h>
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#include <Guid/ArmPlatformEvents.h>
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#include <Guid/EventGroup.h>
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#include <Guid/Fdt.h>
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#include <Guid/FileInfo.h>
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@ -293,7 +294,7 @@ EFI_DRIVER_BINDING_PROTOCOL mJunoFdtBinding = {
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STATIC
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VOID
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EFIAPI
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OnEndOfDxe (
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LoadFdtOnEvent (
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EFI_EVENT Event,
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VOID *Context
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)
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@ -304,6 +305,7 @@ OnEndOfDxe (
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UINTN VariableSize;
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CHAR16* FdtDevicePathStr;
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EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL *EfiDevicePathFromTextProtocol;
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EFI_EVENT ArmPlatformUpdateFdtEvent;
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//
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// Read the 'FDT' UEFI Variable to know where we should we read the blob from.
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@ -384,6 +386,8 @@ OnEndOfDxe (
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}
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}
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// Context is not NULL when this function is called for a gEfiEndOfDxeEventGroupGuid event
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if (Context) {
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// Install the Binding protocol to verify when the FileSystem that contains the FDT has been installed
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Status = gBS->InstallMultipleProtocolInterfaces (
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&gImageHandle,
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@ -395,12 +399,26 @@ OnEndOfDxe (
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return;
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}
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// Register the event triggered when the 'Fdt' variable is updated.
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_CALLBACK,
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LoadFdtOnEvent,
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NULL,
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&gArmPlatformUpdateFdtEventGuid,
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&ArmPlatformUpdateFdtEvent
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);
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ASSERT_EFI_ERROR (Status);
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}
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//
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// Force to connect the FileSystem that contains the FDT
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//
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BdsConnectDevicePath (mFdtFileSystemDevicePath, &Handle, NULL);
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}
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STATIC CONST BOOLEAN mIsEndOfDxeEvent = TRUE;
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EFI_STATUS
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JunoFdtInstall (
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IN EFI_HANDLE ImageHandle
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@ -415,8 +433,8 @@ JunoFdtInstall (
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_CALLBACK,
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OnEndOfDxe,
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NULL,
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LoadFdtOnEvent,
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&mIsEndOfDxeEvent,
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&gEfiEndOfDxeEventGroupGuid,
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&EndOfDxeEvent
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);
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@ -1,6 +1,6 @@
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#/** @file
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#
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# Copyright (c) 2011-2014, ARM Limited. All rights reserved.
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# Copyright (c) 2011-2015, ARM Limited. All rights reserved.
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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@ -42,6 +42,9 @@
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gArmBootMonFsFileInfoGuid = { 0x41e26b9c, 0xada6, 0x45b3, { 0x80, 0x8e, 0x23, 0x57, 0xa3, 0x5b, 0x60, 0xd6 } }
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## Include/Guid/ArmPlatformEvents.h
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gArmPlatformUpdateFdtEventGuid = { 0xaffe115b, 0x8589, 0x456d, { 0xba, 0xb5, 0x8f, 0x2e, 0xda, 0x53, 0xae, 0xb7 } }
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[Ppis]
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## Include/Ppi/ArmGlobalVariable.h
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gArmGlobalVariablePpiGuid = { 0xab1c1816, 0xd542, 0x4e6f, {0x9b, 0x1e, 0x8e, 0xcd, 0x92, 0x53, 0xe2, 0xe7} }
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@ -427,7 +427,6 @@ StartDefaultBootOnTimeout (
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which is implementation-dependent.
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**/
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STATIC
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VOID
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EFIAPI
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EmptyCallbackFunction (
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@ -2,7 +2,7 @@
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#
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# Component description file for Bds module
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#
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# Copyright (c) 2011-2014, ARM Ltd. All rights reserved.<BR>
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# Copyright (c) 2011-2015, ARM Ltd. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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@ -53,6 +53,7 @@
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gEfiEndOfDxeEventGroupGuid
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gEfiFileSystemInfoGuid
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gArmGlobalVariableGuid
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gArmPlatformUpdateFdtEventGuid
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[Protocols]
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gEfiBdsArchProtocolGuid
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@ -289,4 +289,19 @@ IsPrintableString (
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OUT BOOLEAN *IsUnicode
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);
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/**
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An empty function to pass error checking of CreateEventEx ().
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@param Event Event whose notification function is being invoked.
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@param Context Pointer to the notification function's context,
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which is implementation-dependent.
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**/
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VOID
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EFIAPI
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EmptyCallbackFunction (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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#endif /* _BDSINTERNAL_H_ */
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@ -15,6 +15,7 @@
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#include "BdsInternal.h"
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#include <Guid/ArmGlobalVariableHob.h>
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#include <Guid/ArmPlatformEvents.h>
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extern BDS_LOAD_OPTION_SUPPORT *BdsLoadOptionSupportList;
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@ -834,6 +835,7 @@ UpdateFdtPath (
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BDS_SUPPORTED_DEVICE *SupportedBootDevice;
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EFI_DEVICE_PATH_PROTOCOL *FdtDevicePathNodes;
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EFI_DEVICE_PATH_PROTOCOL *FdtDevicePath;
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EFI_EVENT UpdateFdtEvent;
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Status = SelectBootDevice (&SupportedBootDevice);
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if (EFI_ERROR(Status)) {
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@ -873,6 +875,23 @@ UpdateFdtPath (
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ASSERT_EFI_ERROR(Status);
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}
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if (!EFI_ERROR (Status)) {
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//
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// Signal FDT has been updated
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//
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_NOTIFY,
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EmptyCallbackFunction,
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NULL,
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&gArmPlatformUpdateFdtEventGuid,
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&UpdateFdtEvent
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);
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if (!EFI_ERROR (Status)) {
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gBS->SignalEvent (UpdateFdtEvent);
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}
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}
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EXIT:
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if (Status == EFI_ABORTED) {
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Print(L"\n");
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@ -0,0 +1,23 @@
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/** @file
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*
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* Copyright (c) 2015, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#ifndef __ARM_PLATFORM_EVENTS_H__
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#define __ARM_PLATFORM_EVENTS_H__
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#define ARM_PLATFORM_UPDATE_FDT_EVENT_GUID \
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{ 0xaffe115b, 0x8589, 0x456d, { 0xba, 0xb5, 0x8f, 0x2e, 0xda, 0x53, 0xae, 0xb7 } }
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extern EFI_GUID gArmPlatformUpdateFdtEventGuid;
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#endif
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