diff options
Diffstat (limited to 'SecurityPkg/Hash2DxeCrypto/Driver.c')
| -rw-r--r-- | SecurityPkg/Hash2DxeCrypto/Driver.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/SecurityPkg/Hash2DxeCrypto/Driver.c b/SecurityPkg/Hash2DxeCrypto/Driver.c new file mode 100644 index 0000000000..ba2fe6a2c4 --- /dev/null +++ b/SecurityPkg/Hash2DxeCrypto/Driver.c @@ -0,0 +1,242 @@ +/** @file
+ This is service binding for Hash driver.
+
+Copyright (c) 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 that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "Driver.h"
+
+EFI_SERVICE_BINDING_PROTOCOL mHash2ServiceBindingProtocol = {
+ Hash2ServiceBindingCreateChild,
+ Hash2ServiceBindingDestroyChild
+};
+
+/**
+ Creates a child handle with a set of I/O services.
+
+ @param[in] This Protocol instance pointer.
+ @param[in, out] ChildHandle Pointer to the handle of the child to create. If
+ it is NULL, then a new handle is created. If
+ it is not NULL, then the I/O services are added
+ to the existing child handle.
+
+ @retval EFI_SUCCES The protocol was added to ChildHandle.
+ @retval EFI_INVALID_PARAMETER ChildHandle is NULL.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to
+ create the child.
+ @retval Others The child handle was not created.
+
+**/
+EFI_STATUS
+EFIAPI
+Hash2ServiceBindingCreateChild (
+ IN EFI_SERVICE_BINDING_PROTOCOL *This,
+ IN OUT EFI_HANDLE *ChildHandle
+ )
+{
+ EFI_STATUS Status;
+ HASH2_SERVICE_DATA *Hash2ServiceData;
+ HASH2_INSTANCE_DATA *Instance;
+ EFI_TPL OldTpl;
+
+ if ((This == NULL) || (ChildHandle == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Hash2ServiceData = HASH2_SERVICE_DATA_FROM_THIS (This);
+
+ //
+ // Allocate buffer for the new instance.
+ //
+ Instance = AllocateZeroPool (sizeof (HASH2_INSTANCE_DATA));
+ if (Instance == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Init the instance data.
+ //
+ Instance->Signature = HASH2_INSTANCE_DATA_SIGNATURE;
+ CopyMem (&Instance->Hash2Protocol, &mHash2Protocol, sizeof (Instance->Hash2Protocol));
+ Instance->Hash2ServiceData = Hash2ServiceData;
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ ChildHandle,
+ &gEfiHash2ProtocolGuid,
+ &Instance->Hash2Protocol,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (Instance);
+ return Status;
+ }
+
+ Instance->Handle = *ChildHandle;
+
+ //
+ // Add the child instance into ChildrenList.
+ //
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ InsertTailList (&Hash2ServiceData->ChildrenList, &Instance->InstEntry);
+
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ Destroys a child handle with a set of I/O services.
+
+ The DestroyChild() function does the opposite of CreateChild(). It removes a
+ protocol that was installed by CreateChild() from ChildHandle. If the removed
+ protocol is the last protocol on ChildHandle, then ChildHandle is destroyed.
+
+ @param[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL
+ instance.
+ @param[in] ChildHandle Handle of the child to destroy.
+
+ @retval EFI_SUCCES The protocol was removed from ChildHandle.
+ @retval EFI_UNSUPPORTED ChildHandle does not support the protocol that
+ is being removed.
+ @retval EFI_INVALID_PARAMETER ChildHandle is NULL.
+ @retval EFI_ACCESS_DENIED The protocol could not be removed from the
+ ChildHandle because its services are being
+ used.
+ @retval Others The child handle was not destroyed.
+
+**/
+EFI_STATUS
+EFIAPI
+Hash2ServiceBindingDestroyChild (
+ IN EFI_SERVICE_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ChildHandle
+ )
+{
+ EFI_STATUS Status;
+ HASH2_SERVICE_DATA *Hash2ServiceData;
+ EFI_HASH2_PROTOCOL *Hash2Protocol;
+ HASH2_INSTANCE_DATA *Instance;
+ EFI_TPL OldTpl;
+ LIST_ENTRY *Entry;
+
+ if ((This == NULL) || (ChildHandle == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Hash2ServiceData = HASH2_SERVICE_DATA_FROM_THIS (This);
+
+ //
+ // Check if this ChildHandle is valid
+ //
+ Instance = NULL;
+ for(Entry = (&Hash2ServiceData->ChildrenList)->ForwardLink; Entry != (&Hash2ServiceData->ChildrenList); Entry = Entry->ForwardLink) {
+ Instance = HASH2_INSTANCE_DATA_FROM_LINK (Entry);
+ if (Instance->Handle == ChildHandle) {
+ break;
+ } else {
+ Instance = NULL;
+ }
+ }
+ if (Instance == NULL) {
+ DEBUG ((EFI_D_ERROR, "Hash2ServiceBindingDestroyChild - Invalid handle\n"));
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Get HashProtocol
+ //
+ Status = gBS->HandleProtocol (
+ ChildHandle,
+ &gEfiHash2ProtocolGuid,
+ (VOID **)&Hash2Protocol
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ASSERT (Hash2Protocol == &Instance->Hash2Protocol);
+
+ //
+ // Uninstall the Hash protocol.
+ //
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ChildHandle,
+ &gEfiHash2ProtocolGuid,
+ &Instance->Hash2Protocol,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ //
+ // Remove this instance from the ChildrenList.
+ //
+ RemoveEntryList (&Instance->InstEntry);
+
+ gBS->RestoreTPL (OldTpl);
+
+ FreePool (Instance);
+
+ return Status;
+}
+
+/**
+ The entry point for Hash driver which installs the service binding protocol.
+
+ @param[in] ImageHandle The image handle of the driver.
+ @param[in] SystemTable The system table.
+
+ @retval EFI_SUCCES The service binding protocols is successfully installed.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+EFIAPI
+Hash2DriverEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ HASH2_SERVICE_DATA *Hash2ServiceData;
+
+ //
+ // Initialize the Hash Service Data.
+ //
+ Hash2ServiceData = AllocateZeroPool (sizeof (HASH2_SERVICE_DATA));
+ if (Hash2ServiceData == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Hash2ServiceData->Signature = HASH2_SERVICE_DATA_SIGNATURE;
+ CopyMem (&Hash2ServiceData->ServiceBinding, &mHash2ServiceBindingProtocol, sizeof (EFI_SERVICE_BINDING_PROTOCOL));
+ InitializeListHead (&Hash2ServiceData->ChildrenList);
+
+ //
+ // Install the HASH Service Binding Protocol
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Hash2ServiceData->ServiceHandle,
+ &gEfiHash2ServiceBindingProtocolGuid,
+ &Hash2ServiceData->ServiceBinding,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (Hash2ServiceData);
+ }
+
+ return Status;
+}
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