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Andrew Walbran68a8c162022-03-07 15:38:42 +00001// Copyright 2022, The Android Open Source Project
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15//! pVM firmware.
16
17#![no_main]
18#![no_std]
19
Andrew Walbranf2594882022-03-15 17:32:53 +000020mod console;
Andrew Walbran68a8c162022-03-07 15:38:42 +000021mod psci;
Andrew Walbranf2594882022-03-15 17:32:53 +000022mod uart;
Andrew Walbran68a8c162022-03-07 15:38:42 +000023
Andrew Walbranf2594882022-03-15 17:32:53 +000024use console::emergency_write_str;
Andrew Walbran68a8c162022-03-07 15:38:42 +000025use core::panic::PanicInfo;
26use psci::{system_off, system_reset};
27
28/// Entry point for pVM firmware.
29#[no_mangle]
30pub extern "C" fn main() -> ! {
Andrew Walbranf2594882022-03-15 17:32:53 +000031 console::init();
32 console::write_str("Hello world\n");
33
Andrew Walbran68a8c162022-03-07 15:38:42 +000034 system_off();
35 #[allow(clippy::empty_loop)]
36 loop {}
37}
38
39#[panic_handler]
40fn panic(_info: &PanicInfo) -> ! {
Andrew Walbranf2594882022-03-15 17:32:53 +000041 emergency_write_str("panic\n");
Andrew Walbran68a8c162022-03-07 15:38:42 +000042 system_reset();
43 loop {}
44}