9d510e61fc
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/** @file
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Capsule library runtime support.
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Copyright (c) 2016 - 2017, 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 <PiDxe.h>
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#include <Guid/FmpCapsule.h>
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#include <Guid/SystemResourceTable.h>
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#include <Guid/EventGroup.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DxeServicesTableLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/MemoryAllocationLib.h>
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extern EFI_SYSTEM_RESOURCE_TABLE *mEsrtTable;
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extern BOOLEAN mIsVirtualAddrConverted;
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EFI_EVENT mDxeRuntimeCapsuleLibVirtualAddressChangeEvent = NULL;
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/**
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Convert EsrtTable physical address to virtual address.
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@param[in] Event Event whose notification function is being invoked.
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@param[in] Context The pointer to the notification function's context, which
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is implementation-dependent.
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**/
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VOID
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EFIAPI
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DxeCapsuleLibVirtualAddressChangeEvent (
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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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UINTN Index;
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EFI_CONFIGURATION_TABLE *ConfigEntry;
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//
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// Get Esrt table first
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//
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ConfigEntry = gST->ConfigurationTable;
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for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {
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if (CompareGuid(&gEfiSystemResourceTableGuid, &ConfigEntry->VendorGuid)) {
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break;
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}
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ConfigEntry++;
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}
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//
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// If no Esrt table installed in Configure Table
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//
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if (Index < gST->NumberOfTableEntries) {
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//
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// Search Esrt to check given capsule is qualified
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//
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mEsrtTable = (EFI_SYSTEM_RESOURCE_TABLE *) ConfigEntry->VendorTable;
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//
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// Update protocol pointer to Esrt Table.
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//
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gRT->ConvertPointer (0x00, (VOID**) &(mEsrtTable));
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}
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mIsVirtualAddrConverted = TRUE;
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}
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/**
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The constructor function hook VirtualAddressChange event to use ESRT table as capsule routing table.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor successfully .
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**/
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EFI_STATUS
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EFIAPI
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DxeRuntimeCapsuleLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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//
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// Make sure we can handle virtual address changes.
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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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DxeCapsuleLibVirtualAddressChangeEvent,
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NULL,
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&gEfiEventVirtualAddressChangeGuid,
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&mDxeRuntimeCapsuleLibVirtualAddressChangeEvent
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);
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ASSERT_EFI_ERROR (Status);
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return EFI_SUCCESS;
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}
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/**
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The destructor function closes the VirtualAddressChange event.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The destructor completed successfully.
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**/
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EFI_STATUS
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EFIAPI
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DxeRuntimeCapsuleLibDestructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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//
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// Close the VirtualAddressChange event.
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//
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Status = gBS->CloseEvent (mDxeRuntimeCapsuleLibVirtualAddressChangeEvent);
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ASSERT_EFI_ERROR (Status);
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return EFI_SUCCESS;
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}
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