1 // Licensed to the Apache Software Foundation (ASF) under one
2 // or more contributor license agreements. See the NOTICE file
3 // distributed with this work for additional information
4 // regarding copyright ownership. The ASF licenses this file
5 // to you under the Apache License, Version 2.0 (the
6 // "License"); you may not use this file except in compliance
7 // with the License. You may obtain a copy of the License at
8 //
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing,
12 // software distributed under the License is distributed on an
13 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14 // KIND, either express or implied. See the License for the
15 // specific language governing permissions and limitations
16 // under the License.
17
18 #![no_main]
19
20 use optee_utee::{
21 ta_close_session, ta_create, ta_destroy, ta_invoke_command, ta_open_session, trace_println,
22 };
23 use optee_utee::{Error, ErrorKind, Parameters, Result};
24 use serde::{Deserialize, Serialize};
25 use std::io::Write;
26 use proto::Command;
27
28 #[ta_create]
create() -> Result<()>29 fn create() -> Result<()> {
30 trace_println!("[+] TA create");
31 Ok(())
32 }
33
34 #[ta_open_session]
open_session(_params: &mut Parameters) -> Result<()>35 fn open_session(_params: &mut Parameters) -> Result<()> {
36 trace_println!("[+] TA open session");
37 Ok(())
38 }
39
40 #[ta_close_session]
close_session()41 fn close_session() {
42 trace_println!("[+] TA close session");
43 }
44
45 #[ta_destroy]
destroy()46 fn destroy() {
47 trace_println!("[+] TA destroy");
48 }
49
50 #[derive(Serialize, Deserialize, Debug)]
51 struct Point {
52 x: i32,
53 y: i32,
54 }
55
56 #[ta_invoke_command]
invoke_command(cmd_id: u32, params: &mut Parameters) -> Result<()>57 fn invoke_command(cmd_id: u32, params: &mut Parameters) -> Result<()> {
58 trace_println!("[+] TA invoke command");
59 match Command::from(cmd_id) {
60 Command::DefaultOp => {
61 let mut p = unsafe { params.0.as_memref().unwrap() };
62 let mut buffer = p.buffer();
63 let point = Point { x: 1, y: 2 };
64
65 // Convert the Point to a JSON string.
66 let serialized = serde_json::to_string(&point).unwrap();
67 let len = buffer.write(serialized.as_bytes()).unwrap();
68
69 // update size of output buffer
70 unsafe { (*p.raw()).size = len as u32 };
71
72 // Prints serialized = {"x":1,"y":2}
73 trace_println!("serialized = {}", serialized);
74
75 // Convert the JSON string back to a Point.
76 let deserialized: Point = serde_json::from_str(&serialized).unwrap();
77
78 // Prints deserialized = Point { x: 1, y: 2 }
79 trace_println!("deserialized = {:?}", deserialized);
80
81 Ok(())
82 }
83 _ => Err(Error::new(ErrorKind::BadParameters)),
84 }
85 }
86
87 // TA configurations
88 const TA_FLAGS: u32 = 0;
89 const TA_DATA_SIZE: u32 = 64 * 1024;
90 const TA_STACK_SIZE: u32 = 4 * 1024;
91 const TA_VERSION: &[u8] = b"0.1\0";
92 const TA_DESCRIPTION: &[u8] = b"This is a serde example.\0";
93 const EXT_PROP_VALUE_1: &[u8] = b"Serde TA\0";
94 const EXT_PROP_VALUE_2: u32 = 0x0010;
95 const TRACE_LEVEL: i32 = 4;
96 const TRACE_EXT_PREFIX: &[u8] = b"TA\0";
97 const TA_FRAMEWORK_STACK_SIZE: u32 = 2048;
98
99 include!(concat!(env!("OUT_DIR"), "/user_ta_header.rs"));
100