kernel/src/lib.rs


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#![no_std]

pub mod console;
pub mod device_tree;
pub mod util;

#[cfg(not(test))]
mod panic;

/// The entrypoint to the kernel. This should be executed by hart0 alone. It performs some early
/// boot tasks, then wakes up any other harts.
///
/// # Safety
///
/// - The `device_tree` pointer must be a valid pointer into physical memory. See
///   `device_tree::FlattenedDeviceTree::from_ptr` for the precise requirements.
/// - This must be called in supervisor mode with paging and traps disabled, but with all traps
///   delegated to supervisor mode.
#[no_mangle]
pub unsafe extern "C" fn hart0_boot(device_tree: *const u8) -> ! {
    console::init();

    log::info!("device_tree = {device_tree:?}");
    let flattened_device_tree = unsafe { device_tree::FlattenedDeviceTree::from_ptr(device_tree) }
        .expect("invalid DeviceTree");
    for event in flattened_device_tree.struct_events() {
        let event = event.expect("invalid DeviceTree");
        dbg!(event);
    }

    todo!()
}