1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 /*
20  * Service port for SPI test device. This device calculates an 8-bit digest of
21  * TX buffer, seeds rand() with that digest, fills RX with random bytes, and
22  * sends it back to the client. If it's a receive-only transfer, i.e. no TX
23  * buffer is given, device uses seed 0.
24  *
25  * This device must be on a shared SPI bus.
26  */
27 #define SPI_TEST_PORT "com.android.trusty.spi.test.rand.bytes"
28