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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]
Pierre-Clément Tosifc531152022-10-20 12:22:23 +010019#![feature(default_alloc_error_handler)]
Pierre-Clément Tosi20b60962022-10-17 13:35:27 +010020#![feature(ptr_const_cast)] // Stabilized in 1.65.0
Andrew Walbran68a8c162022-03-07 15:38:42 +000021
Pierre-Clément Tosi4ef75222022-10-26 17:40:50 +010022mod avb;
Pierre-Clément Tosi20b60962022-10-17 13:35:27 +010023mod config;
Pierre-Clément Tosi5bbfca52022-10-21 12:14:35 +010024mod entry;
Andrew Walbrandfb73372022-04-21 10:52:27 +000025mod exceptions;
Pierre-Clément Tosia0934c12022-11-25 20:54:11 +000026mod fdt;
Pierre-Clément Tosifc531152022-10-20 12:22:23 +010027mod heap;
Pierre-Clément Tosida4440a2022-08-22 18:06:32 +010028mod helpers;
Pierre-Clément Tosia0934c12022-11-25 20:54:11 +000029mod memory;
Pierre-Clément Tosi072969b2022-10-19 17:32:24 +010030mod mmio_guard;
Pierre-Clément Tosia8a4a202022-11-03 14:16:46 +000031mod mmu;
Andrew Walbran19690632022-12-07 16:41:30 +000032mod pci;
Pierre-Clément Tosida4440a2022-08-22 18:06:32 +010033mod smccc;
Andrew Walbran68a8c162022-03-07 15:38:42 +000034
Andrew Walbran19690632022-12-07 16:41:30 +000035use crate::{
36 entry::RebootReason,
37 memory::MemoryTracker,
38 pci::{map_cam, pci_node},
39};
Pierre-Clément Tosi4ef75222022-10-26 17:40:50 +010040use avb::PUBLIC_KEY;
Alice Wang0a688d22022-12-02 09:48:41 +000041use avb_nostd::verify_image;
Pierre-Clément Tosi8edf72e2022-12-06 16:02:57 +000042use dice::bcc;
Andrew Walbran19690632022-12-07 16:41:30 +000043use libfdt::Fdt;
Pierre-Clément Tosi8edf72e2022-12-06 16:02:57 +000044use log::{debug, error, info, trace};
Andrew Walbran68a8c162022-03-07 15:38:42 +000045
Alice Wang28cbcf12022-12-01 07:58:28 +000046fn main(
Andrew Walbran19690632022-12-07 16:41:30 +000047 fdt: &Fdt,
Alice Wang28cbcf12022-12-01 07:58:28 +000048 signed_kernel: &[u8],
49 ramdisk: Option<&[u8]>,
Pierre-Clément Tosi8edf72e2022-12-06 16:02:57 +000050 bcc: &bcc::Handover,
Andrew Walbran19690632022-12-07 16:41:30 +000051 memory: &mut MemoryTracker,
Alice Wang0a688d22022-12-02 09:48:41 +000052) -> Result<(), RebootReason> {
Pierre-Clément Tosi37105a62022-10-18 12:21:48 +010053 info!("pVM firmware");
Pierre-Clément Tosia0934c12022-11-25 20:54:11 +000054 debug!("FDT: {:?}", fdt as *const libfdt::Fdt);
55 debug!("Signed kernel: {:?} ({:#x} bytes)", signed_kernel.as_ptr(), signed_kernel.len());
56 if let Some(rd) = ramdisk {
57 debug!("Ramdisk: {:?} ({:#x} bytes)", rd.as_ptr(), rd.len());
58 } else {
59 debug!("Ramdisk: None");
60 }
Pierre-Clément Tosi8edf72e2022-12-06 16:02:57 +000061 trace!("BCC: {bcc:x?}");
Andrew Walbran19690632022-12-07 16:41:30 +000062
63 // Set up PCI bus for VirtIO devices.
64 let pci_node = pci_node(fdt)?;
65 map_cam(&pci_node, memory)?;
66
Alice Wang0a688d22022-12-02 09:48:41 +000067 verify_image(signed_kernel, PUBLIC_KEY).map_err(|e| {
68 error!("Failed to verify the payload: {e}");
69 RebootReason::PayloadVerificationError
70 })?;
Alice Wang4379c832022-12-05 15:50:20 +000071 info!("Starting payload...");
Alice Wang28cbcf12022-12-01 07:58:28 +000072 Ok(())
Pierre-Clément Tosi263ffd52022-10-05 20:27:50 +010073}