load kernel on core1 (WIP)

core0-buffer
Sebastien Bourdeauducq 2020-04-17 17:05:55 +08:00
parent 83b92f3a7f
commit b22f68eaaf
2 changed files with 85 additions and 12 deletions

View File

@ -19,6 +19,7 @@ use libboard_zynq::{
};
use libsupport_zynq::alloc::{vec, vec::Vec};
use libasync::{smoltcp::{Sockets, TcpStream}, task};
use alloc::sync::Arc;
use crate::kernel;
@ -136,7 +137,22 @@ enum Reply {
ClockFailure = 15,
}
async fn send_header(stream: &TcpStream, reply: Reply) -> Result<()> {
async fn write_i32(stream: &TcpStream, value: i32) -> Result<()> {
stream.send([
(value >> 24) as u8,
(value >> 16) as u8,
(value >> 8) as u8,
value as u8].iter().copied()).await?;
Ok(())
}
async fn write_chunk(stream: &TcpStream, chunk: &[u8]) -> Result<()> {
write_i32(stream, chunk.len() as i32).await?;
stream.send(chunk.iter().copied()).await?;
Ok(())
}
async fn write_header(stream: &TcpStream, reply: Reply) -> Result<()> {
stream.send([0x5a, 0x5a, 0x5a, 0x5a, reply.to_u8().unwrap()].iter().copied()).await?;
Ok(())
}
@ -149,7 +165,7 @@ async fn handle_connection(stream: &TcpStream, control: Rc<RefCell<kernel::Contr
.ok_or(Error::UnrecognizedPacket)?;
match request {
Request::SystemInfo => {
send_header(&stream, Reply::SystemInfo).await?;
write_header(&stream, Reply::SystemInfo).await?;
stream.send("ARZQ".bytes()).await?;
},
Request::LoadKernel => {
@ -160,14 +176,24 @@ async fn handle_connection(stream: &TcpStream, control: Rc<RefCell<kernel::Contr
let mut control = control.borrow_mut();
control.restart();
control.tx.async_send(kernel::Message::LoadRequest).await;
control.tx.async_send(kernel::Message::LoadRequest(Arc::new(buffer))).await;
let reply = control.rx.async_recv().await;
println!("core0 received: {:?}", reply);
send_header(&stream, Reply::LoadCompleted).await?;
match *reply {
kernel::Message::LoadCompleted => write_header(&stream, Reply::LoadCompleted).await?,
kernel::Message::LoadFailed => {
write_header(&stream, Reply::LoadFailed).await?;
write_chunk(&stream, b"core1 failed to process data").await?;
},
_ => {
println!("received unexpected message from core1: {:?}", reply);
write_header(&stream, Reply::LoadFailed).await?;
write_chunk(&stream, b"core1 sent unexpected reply").await?;
}
}
} else {
read_drain(&stream, length).await?;
send_header(&stream, Reply::LoadFailed).await?;
write_header(&stream, Reply::LoadFailed).await?;
write_chunk(&stream, b"kernel is too large").await?;
}
}
_ => return Err(Error::UnrecognizedPacket)

View File

@ -1,16 +1,19 @@
use alloc::{vec, vec::Vec};
use alloc::{vec, vec::Vec, sync::Arc};
use libcortex_a9::{mutex::Mutex, sync_channel::{self, sync_channel}};
use libboard_zynq::println;
use libsupport_zynq::boot::Core1;
use dyld;
use crate::pl::csr;
use crate::rtio;
#[derive(Debug)]
pub enum Message {
LoadRequest,
LoadReply,
LoadRequest(Arc<Vec<u8>>),
LoadCompleted,
LoadFailed,
}
static CHANNEL_0TO1: Mutex<Option<sync_channel::Receiver<Message>>> = Mutex::new(None);
@ -54,6 +57,40 @@ impl Control {
}
}
macro_rules! api {
($i:ident) => ({
extern { static $i: u8; }
api!($i = &$i as *const _)
});
($i:ident, $d:item) => ({
$d
api!($i = $i)
});
($i:ident = $e:expr) => {
(stringify!($i), $e as *const ())
}
}
fn resolve(required: &[u8]) -> Option<u32> {
let api = &[
/* proxified syscalls */
api!(now = csr::rtio::NOW_HI_ADDR as *const _),
api!(rtio_init = rtio::init),
api!(rtio_get_destination_status = rtio::get_destination_status),
api!(rtio_get_counter = rtio::get_counter),
api!(rtio_output = rtio::output),
api!(rtio_output_wide = rtio::output_wide),
api!(rtio_input_timestamp = rtio::input_timestamp),
api!(rtio_input_data = rtio::input_data),
api!(rtio_input_timestamped_data = rtio::input_timestamped_data),
];
api.iter()
.find(|&&(exported, _)| exported.as_bytes() == required)
.map(|&(_, ptr)| ptr as u32)
}
#[no_mangle]
pub fn main_core1() {
println!("Core1 started");
@ -70,10 +107,20 @@ pub fn main_core1() {
}
let core1_rx = core1_rx.unwrap();
let mut image = vec![0; 32768];
for message in core1_rx {
println!("core1 received: {:?}", message);
match *message {
Message::LoadRequest => core1_tx.send(Message::LoadReply),
Message::LoadRequest(data) => {
match dyld::Library::load(&data, &mut image, &resolve) {
Ok(library) => {
core1_tx.send(Message::LoadCompleted)
},
Err(error) => {
println!("failed to load shared library: {}", error);
core1_tx.send(Message::LoadFailed)
}
}
},
_ => println!("Core1 received unexpected message: {:?}", message),
}
}