Add license for tdx-guest

framework/libs/tdx-guest/src/asm/mod.rs

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright(c) 2023-2024 Intel Corporation.
+
 use crate::{tdcall::TdcallArgs, tdvmcall::TdVmcallArgs};
 use core::arch::global_asm;
 

framework/libs/tdx-guest/src/asm/tdcall.asm

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2023-2024 Intel Corporation.
+
 .section .text
 
 # Arguments offsets in TdVmcallArgs struct

framework/libs/tdx-guest/src/asm/tdvmcall.asm

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2023-2024 Intel Corporation.
+
 .section .text
 
 # Mask used to control which part of the guest TD GPR and XMM

framework/libs/tdx-guest/src/lib.rs

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright(c) 2023-2024 Intel Corporation.
+
 #![no_std]
 #![allow(dead_code)]
 #![allow(unused_variables)]

framework/libs/tdx-guest/src/tdcall.rs

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright(c) 2023-2024 Intel Corporation.
+
 //! The TDCALL instruction causes a VM exit to the Intel TDX module.
 //! It is used to call guest-side Intel TDX functions. For more information about
 //! TDCALL, please refer to the [Intel® TDX Module v1.5 ABI Specification](https://cdrdv2.intel.com/v1/dl/getContent/733579)

framework/libs/tdx-guest/src/tdvmcall.rs

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright(c) 2023-2024 Intel Corporation.
+
 //! The TDVMCALL helps invoke services from the host VMM. From the perspective of the host VMM, the TDVMCALL is a trap-like, VM exit into
 //! the host VMM, reported via the SEAMRET instruction flow.
 //! By design, after the SEAMRET, the host VMM services the request specified in the parameters