Add UEFI2.5 HASH protocol implementation.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com> Reviewed-by: "Long, Qin" <Qin.Long@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17288 6f19259b-4bc3-4df7-8a09-765794883524
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242
SecurityPkg/Hash2DxeCrypto/Driver.c
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242
SecurityPkg/Hash2DxeCrypto/Driver.c
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/** @file
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This is service binding for Hash driver.
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Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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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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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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#include "Driver.h"
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EFI_SERVICE_BINDING_PROTOCOL mHash2ServiceBindingProtocol = {
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Hash2ServiceBindingCreateChild,
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Hash2ServiceBindingDestroyChild
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};
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/**
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Creates a child handle with a set of I/O services.
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@param[in] This Protocol instance pointer.
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@param[in, out] ChildHandle Pointer to the handle of the child to create. If
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it is NULL, then a new handle is created. If
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it is not NULL, then the I/O services are added
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to the existing child handle.
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@retval EFI_SUCCES The protocol was added to ChildHandle.
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@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to
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create the child.
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@retval Others The child handle was not created.
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**/
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EFI_STATUS
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EFIAPI
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Hash2ServiceBindingCreateChild (
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IN EFI_SERVICE_BINDING_PROTOCOL *This,
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IN OUT EFI_HANDLE *ChildHandle
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)
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{
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EFI_STATUS Status;
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HASH2_SERVICE_DATA *Hash2ServiceData;
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HASH2_INSTANCE_DATA *Instance;
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EFI_TPL OldTpl;
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if ((This == NULL) || (ChildHandle == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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Hash2ServiceData = HASH2_SERVICE_DATA_FROM_THIS (This);
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//
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// Allocate buffer for the new instance.
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//
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Instance = AllocateZeroPool (sizeof (HASH2_INSTANCE_DATA));
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if (Instance == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Init the instance data.
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//
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Instance->Signature = HASH2_INSTANCE_DATA_SIGNATURE;
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CopyMem (&Instance->Hash2Protocol, &mHash2Protocol, sizeof (Instance->Hash2Protocol));
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Instance->Hash2ServiceData = Hash2ServiceData;
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Status = gBS->InstallMultipleProtocolInterfaces (
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ChildHandle,
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&gEfiHash2ProtocolGuid,
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&Instance->Hash2Protocol,
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NULL
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);
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if (EFI_ERROR (Status)) {
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FreePool (Instance);
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return Status;
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}
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Instance->Handle = *ChildHandle;
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//
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// Add the child instance into ChildrenList.
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//
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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InsertTailList (&Hash2ServiceData->ChildrenList, &Instance->InstEntry);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Destroys a child handle with a set of I/O services.
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The DestroyChild() function does the opposite of CreateChild(). It removes a
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protocol that was installed by CreateChild() from ChildHandle. If the removed
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protocol is the last protocol on ChildHandle, then ChildHandle is destroyed.
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@param[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL
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instance.
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@param[in] ChildHandle Handle of the child to destroy.
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@retval EFI_SUCCES The protocol was removed from ChildHandle.
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@retval EFI_UNSUPPORTED ChildHandle does not support the protocol that
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is being removed.
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@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
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@retval EFI_ACCESS_DENIED The protocol could not be removed from the
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ChildHandle because its services are being
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used.
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@retval Others The child handle was not destroyed.
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**/
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EFI_STATUS
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EFIAPI
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Hash2ServiceBindingDestroyChild (
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IN EFI_SERVICE_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ChildHandle
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)
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{
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EFI_STATUS Status;
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HASH2_SERVICE_DATA *Hash2ServiceData;
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EFI_HASH2_PROTOCOL *Hash2Protocol;
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HASH2_INSTANCE_DATA *Instance;
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EFI_TPL OldTpl;
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LIST_ENTRY *Entry;
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if ((This == NULL) || (ChildHandle == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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Hash2ServiceData = HASH2_SERVICE_DATA_FROM_THIS (This);
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//
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// Check if this ChildHandle is valid
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//
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Instance = NULL;
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for(Entry = (&Hash2ServiceData->ChildrenList)->ForwardLink; Entry != (&Hash2ServiceData->ChildrenList); Entry = Entry->ForwardLink) {
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Instance = HASH2_INSTANCE_DATA_FROM_LINK (Entry);
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if (Instance->Handle == ChildHandle) {
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break;
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} else {
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Instance = NULL;
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}
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}
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if (Instance == NULL) {
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DEBUG ((EFI_D_ERROR, "Hash2ServiceBindingDestroyChild - Invalid handle\n"));
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return EFI_UNSUPPORTED;
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}
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//
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// Get HashProtocol
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//
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Status = gBS->HandleProtocol (
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ChildHandle,
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&gEfiHash2ProtocolGuid,
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(VOID **)&Hash2Protocol
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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ASSERT (Hash2Protocol == &Instance->Hash2Protocol);
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//
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// Uninstall the Hash protocol.
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//
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Status = gBS->UninstallMultipleProtocolInterfaces (
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ChildHandle,
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&gEfiHash2ProtocolGuid,
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&Instance->Hash2Protocol,
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NULL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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//
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// Remove this instance from the ChildrenList.
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//
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RemoveEntryList (&Instance->InstEntry);
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gBS->RestoreTPL (OldTpl);
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FreePool (Instance);
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return Status;
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}
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/**
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The entry point for Hash driver which installs the service binding protocol.
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@param[in] ImageHandle The image handle of the driver.
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@param[in] SystemTable The system table.
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@retval EFI_SUCCES The service binding protocols is successfully installed.
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@retval Others Other errors as indicated.
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**/
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EFI_STATUS
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EFIAPI
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Hash2DriverEntryPoint (
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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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HASH2_SERVICE_DATA *Hash2ServiceData;
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//
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// Initialize the Hash Service Data.
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//
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Hash2ServiceData = AllocateZeroPool (sizeof (HASH2_SERVICE_DATA));
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if (Hash2ServiceData == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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Hash2ServiceData->Signature = HASH2_SERVICE_DATA_SIGNATURE;
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CopyMem (&Hash2ServiceData->ServiceBinding, &mHash2ServiceBindingProtocol, sizeof (EFI_SERVICE_BINDING_PROTOCOL));
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InitializeListHead (&Hash2ServiceData->ChildrenList);
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//
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// Install the HASH Service Binding Protocol
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&Hash2ServiceData->ServiceHandle,
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&gEfiHash2ServiceBindingProtocolGuid,
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&Hash2ServiceData->ServiceBinding,
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NULL
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);
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if (EFI_ERROR (Status)) {
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FreePool (Hash2ServiceData);
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}
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return Status;
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}
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