chore: kernel: driver: update api, pass fdt header

Cargo.lock

@@ -83,9 +83,8 @@ checksum = "361a90feb7004eca4019fb28352a9465666b24f840f5c3cddf0ff13920590b89"
 
 [[package]]
 name = "fdt"
-version = "0.1.5"
+version = "0.2.0-alpha1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+source = "git+https://github.com/panpaul/fdt.git#f913f139d02c936bbdea99371d9f1347e52b4953"
-checksum = "784a4df722dc6267a04af36895398f59d21d07dce47232adf31ec0ff2fa45e67"
 
 [[package]]
 name = "flate2"

kernel/Cargo.toml

@@ -29,7 +29,7 @@ utils = { path = "../lib/utils", default-features = false }
 bitflags = "2.5"
 cfg-if = "1.0"
 elf = { version = "0.7", default-features = false }
-fdt = "0.1"
+fdt = { git = "https://github.com/panpaul/fdt.git" } # fork from upstream
 log = "0.4"
 num-derive = "0.4"
 num-traits = { version = "0.2", default-features = false }

kernel/src/drivers/mod.rs

@@ -3,9 +3,9 @@
 
 pub mod serial;
 
-use fdt::node::FdtNode;
+use fdt::{node::FdtNode, Fdt};
 
 pub trait Driver {
     fn compatible() -> &'static [&'static str];
-    fn setup(_: FdtNode) -> Self;
+    fn setup(_: FdtNode, _: &Fdt) -> Self;
 }

kernel/src/drivers/serial/sifive.rs

@@ -3,7 +3,7 @@ use crate::drivers::serial::SerialDriver;
 use crate::drivers::Driver;
 use crate::plat::console::ConsoleDevice;
 use core::sync::atomic::{AtomicPtr, Ordering};
-use fdt::node::FdtNode;
+use fdt::{node::FdtNode, Fdt};
 use utils::addr::PhysAddr;
 
 // https://static.dev.sifive.com/FU540-C000-v1.0.pdf
@@ -122,8 +122,8 @@ impl Driver for UartSifive {
         &["sifive,uart0"]
     }
 
-    fn setup(fdt: FdtNode) -> Self {
+    fn setup(node: FdtNode, _: &Fdt) -> Self {
-        let addr = fdt.reg().unwrap().next().unwrap().starting_address;
+        let addr = node.reg().unwrap().next().unwrap().starting_address;
         let addr = unsafe { mmap_phys_to_virt(PhysAddr::from(addr)) };
         let addr: *mut u32 = addr.into();
         let uart = unsafe {

kernel/src/drivers/serial/uart16550.rs

@@ -3,6 +3,7 @@ use crate::drivers::serial::SerialDriver;
 use crate::drivers::Driver;
 use crate::plat::console::ConsoleDevice;
 use fdt::node::FdtNode;
+use fdt::Fdt;
 use uart_16550::MmioSerialPort;
 use utils::addr::PhysAddr;
 
@@ -17,8 +18,8 @@ impl Driver for Uart16550 {
         &["ns16550", "ns16550a"]
     }
 
-    fn setup(fdt: FdtNode) -> Self {
+    fn setup(node: FdtNode, _: &Fdt) -> Self {
-        let addr = fdt.reg().unwrap().next().unwrap().starting_address;
+        let addr = node.reg().unwrap().next().unwrap().starting_address;
         let addr = unsafe { mmap_phys_to_virt(PhysAddr::from(addr)) };
         let mut serial_port = unsafe { MmioSerialPort::new(addr.into()) };
         serial_port.init();

kernel/src/entry.rs

@@ -49,7 +49,11 @@ pub fn rust_main() -> ! {
 
 fn setup_console(fdt: &Fdt) {
     // NOTE: ignore stdin: both stdin and stdout will go through stdout device
-    match fdt.chosen().stdout().and_then(|stdout| ConsoleDriver::new(stdout)) {
+    match fdt
+        .chosen()
+        .stdout()
+        .and_then(|stdout| ConsoleDriver::new(stdout.node(), fdt))
+    {
         None => warn!("No stdout device found or no compatible drivers found, falling back to platform default"),
         Some(driver) => set_console(driver),
     }

kernel/src/plat/console.rs

@@ -1,7 +1,7 @@
 use crate::arch::EarlyConsole;
 use crate::drivers::serial::{Uart16550, UartSifive};
 use crate::drivers::Driver;
-use fdt::node::FdtNode;
+use fdt::{node::FdtNode, Fdt};
 use log::debug;
 use spin::Mutex;
 
@@ -14,15 +14,15 @@ macro_rules! create_console_driver {
         }
 
         impl ConsoleDriver {
-            pub fn new(fdt: FdtNode) -> Option<Self> {
+            pub fn new(node: FdtNode, fdt: &Fdt) -> Option<Self> {
-                if let Some(compatible) = fdt.compatible() {
+                if let Some(compatible) = node.compatible() {
                     $(
                         if compatible
                             .all()
                             .any(|s| $dynamic_driver::compatible().contains(&s))
                         {
                             debug!("Console: Using driver: {}", stringify!($dynamic_driver));
-                            return Some(ConsoleDriver::$dynamic_driver($dynamic_driver::setup(fdt)));
+                            return Some(ConsoleDriver::$dynamic_driver($dynamic_driver::setup(node, fdt)));
                         }
                     )+
                 }