This commit is contained in:
Astro 2019-11-11 01:21:30 +01:00
parent b1472096ba
commit 3eb7fce572
4 changed files with 194 additions and 8 deletions

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@ -14,11 +14,11 @@ use alloc::{vec, vec::Vec, alloc::Layout};
use core::alloc::GlobalAlloc; use core::alloc::GlobalAlloc;
use core::ptr::NonNull; use core::ptr::NonNull;
use core::cell::RefCell; use core::cell::RefCell;
use core::mem::{uninitialized, transmute}; use core::mem::transmute;
use r0::zero_bss; use r0::zero_bss;
use compiler_builtins as _; use compiler_builtins as _;
use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr}; use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, EthernetInterface}; use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder};
use smoltcp::time::Instant; use smoltcp::time::Instant;
use smoltcp::socket::SocketSet; use smoltcp::socket::SocketSet;
use linked_list_allocator::Heap; use linked_list_allocator::Heap;
@ -146,7 +146,7 @@ fn main() {
let mut time = 0u32; let mut time = 0u32;
loop { loop {
time += 1; time += 1;
let timestamp = Instant::from_millis(time.into()); let timestamp = Instant::from_millis(time);
match iface.poll(&mut sockets, timestamp) { match iface.poll(&mut sockets, timestamp) {
Ok(_) => {}, Ok(_) => {},

185
src/main.rs.orig Normal file
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@ -0,0 +1,185 @@
#![no_std]
#![no_main]
#![feature(asm)]
#![feature(global_asm)]
#![feature(naked_functions)]
#![feature(compiler_builtins_lib)]
#![feature(never_type)]
// TODO: disallow unused/dead_code when code moves into a lib crate
#![allow(dead_code)]
use core::mem::{uninitialized, transmute};
use r0::zero_bss;
use compiler_builtins as _;
use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, EthernetInterface};
use smoltcp::time::Instant;
use smoltcp::socket::SocketSet;
mod regs;
mod cortex_a9;
mod clocks;
mod slcr;
mod uart;
mod stdio;
mod eth;
use crate::regs::{RegisterR, RegisterW};
use crate::cortex_a9::{asm, regs::*, mmu};
extern "C" {
static mut __bss_start: u32;
static mut __bss_end: u32;
static mut __stack_start: u32;
}
#[link_section = ".text.boot"]
#[no_mangle]
#[naked]
pub unsafe extern "C" fn _boot_cores() -> ! {
const CORE_MASK: u32 = 0x3;
match MPIDR.read() & CORE_MASK {
0 => {
SP.write(&mut __stack_start as *mut _ as u32);
boot_core0();
}
_ => loop {
// if not core0, infinitely wait for events
asm::wfe();
},
}
}
#[naked]
#[inline(never)]
unsafe fn boot_core0() -> ! {
l1_cache_init();
zero_bss(&mut __bss_start, &mut __bss_end);
let mmu_table = mmu::L1Table::get()
.setup_flat_layout();
mmu::with_mmu(mmu_table, || {
main();
panic!("return from main");
});
}
fn l1_cache_init() {
// Invalidate TLBs
tlbiall();
// Invalidate I-Cache
iciallu();
// Invalidate Branch Predictor Array
bpiall();
// Invalidate D-Cache
dccisw();
}
const HWADDR: [u8; 6] = [0, 0x23, 0xde, 0xea, 0xbe, 0xef];
fn main() {
println!("Main.");
let clocks = clocks::CpuClocks::get();
println!("Clocks: {:?}", clocks);
println!("CPU speeds: {}/{}/{}/{} MHz",
clocks.cpu_6x4x() / 1_000_000,
clocks.cpu_3x2x() / 1_000_000,
clocks.cpu_2x() / 1_000_000,
clocks.cpu_1x() / 1_000_000);
let eth = eth::Eth::default(HWADDR.clone());
println!("Eth on");
const RX_LEN: usize = 2;
let mut rx_descs: [eth::rx::DescEntry; RX_LEN] = unsafe { uninitialized() };
let mut rx_buffers = [[0u8; eth::MTU]; RX_LEN];
// Number of transmission buffers (minimum is two because with
// one, duplicate packet transmission occurs)
const TX_LEN: usize = 2;
let mut tx_descs: [eth::tx::DescEntry; TX_LEN] = unsafe { uninitialized() };
let mut tx_buffers = [[0u8; eth::MTU]; TX_LEN];
let eth = eth.start_rx(&mut rx_descs, &mut rx_buffers);
//let mut eth = eth.start_tx(&mut tx_descs, &mut tx_buffers);
let mut eth = eth.start_tx(
// HACK
unsafe { transmute(tx_descs.as_mut()) },
unsafe { transmute(tx_buffers.as_mut()) },
);
let ethernet_addr = EthernetAddress(HWADDR);
// IP stack
let local_addr = IpAddress::v4(10, 0, 0, 1);
let mut ip_addrs = [IpCidr::new(local_addr, 24)];
let mut neighbor_storage = [None; 16];
let neighbor_cache = NeighborCache::new(&mut neighbor_storage[..]);
let mut iface = EthernetInterfaceBuilder::new(&mut eth)
.ethernet_addr(ethernet_addr)
.ip_addrs(&mut ip_addrs[..])
.neighbor_cache(neighbor_cache)
.finalize();
let mut sockets_storage = [
None, None, None, None,
None, None, None, None
];
let mut sockets = SocketSet::new(&mut sockets_storage[..]);
let mut time = 0u32;
loop {
time += 1;
let timestamp = Instant::from_millis(time.into());
match iface.poll(&mut sockets, timestamp) {
Ok(_) => {},
Err(e) => {
println!("poll error: {}", e);
}
}
// match eth.recv_next() {
// Ok(Some(pkt)) => {
// print!("eth: rx {} bytes", pkt.len());
// for b in pkt.iter() {
// print!(" {:02X}", b);
// }
// println!("");
// }
// Ok(None) => {}
// Err(e) => {
// println!("eth rx error: {:?}", e);
// }
// }
// match eth.send(512) {
// Some(mut pkt) => {
// let mut x = 0;
// for b in pkt.iter_mut() {
// *b = x;
// x += 1;
// }
// println!("eth tx {} bytes", pkt.len());
// }
// None => println!("eth tx shortage"),
// }
}
}
#[panic_handler]
fn panic(info: &core::panic::PanicInfo) -> ! {
println!("\nPanic: {}", info);
slcr::RegisterBlock::unlocked(|slcr| slcr.soft_reset());
loop {}
}
#[no_mangle]
pub unsafe extern "C" fn PrefetchAbort() {
println!("PrefetchAbort");
loop {}
}
#[no_mangle]
pub unsafe extern "C" fn DataAbort() {
println!("DataAbort");
loop {}
}

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@ -2,7 +2,7 @@
use volatile_register::RW; use volatile_register::RW;
use crate::{register, register_bit, register_bits, register_bits_typed}; use crate::{register, register_bit, register_bits};
pub unsafe fn axi_hp0() -> &'static RegisterBlock { pub unsafe fn axi_hp0() -> &'static RegisterBlock {
&*(0xF8008000 as *const _) &*(0xF8008000 as *const _)

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@ -1,6 +1,6 @@
use volatile_register::{RO, WO, RW}; use volatile_register::{RO, RW};
use crate::{register, register_bit, register_bits, register_bits_typed}; use crate::{register, register_bit, register_bits_typed};
#[repr(u8)] #[repr(u8)]
pub enum DataBusWidth { pub enum DataBusWidth {
@ -170,7 +170,8 @@ register_bit!(ddrc_ctrl, powerdown_en, 1);
register_bits_typed!(ddrc_ctrl, data_bus_width, u8, DataBusWidth, 2, 3); register_bits_typed!(ddrc_ctrl, data_bus_width, u8, DataBusWidth, 2, 3);
// (ddrc_ctrl) ... // (ddrc_ctrl) ...
/// Controller operation mode status // Controller operation mode status
register!(mode_sts_reg, ModeStsReg, RO, u32); register!(mode_sts_reg,
ModeStsReg, RO, u32);
register_bits_typed!(mode_sts_reg, operating_mode, u8, ControllerStatus, 0, 2); register_bits_typed!(mode_sts_reg, operating_mode, u8, ControllerStatus, 0, 2);
// (mode_sts_reg) ... // (mode_sts_reg) ...