add UEFI PXE support

src/lib.rs

@@ -78,6 +78,7 @@ use std::{
 mod fat;
 mod gpt;
 mod mbr;
+mod pxe;
 
 const KERNEL_FILE_NAME: &str = "kernel-x86_64";
 
@@ -121,3 +122,17 @@ pub fn create_bios_disk_image(
 
     Ok(())
 }
+
+/// Prepare a folder for use with booting over UEFI_PXE.
+///
+/// This places the bootloader executable under the path "bootloader". The
+/// DHCP server should set the filename option to that path, otherwise the
+/// bootloader won't be found.
+pub fn create_uefi_pxe_tftp_folder(kernel_binary: &Path, out_path: &Path) -> anyhow::Result<()> {
+    let bootloader_path = Path::new(env!("UEFI_BOOTLOADER_PATH"));
+
+    pxe::create_uefi_tftp_folder(bootloader_path, kernel_binary, out_path)
+        .context("failed to create UEFI PXE tftp folder")?;
+
+    Ok(())
+}

src/pxe.rs

@@ -0,0 +1,32 @@
+use std::path::Path;
+
+use anyhow::Context;
+
+pub fn create_uefi_tftp_folder(
+    bootloader_path: &Path,
+    kernel_binary: &Path,
+    out_path: &Path,
+) -> anyhow::Result<()> {
+    std::fs::create_dir_all(out_path)
+        .with_context(|| format!("failed to create out dir at {}", out_path.display()))?;
+
+    let to = out_path.join("bootloader");
+    std::fs::copy(bootloader_path, &to).with_context(|| {
+        format!(
+            "failed to copy bootloader from {} to {}",
+            bootloader_path.display(),
+            to.display()
+        )
+    })?;
+
+    let to = out_path.join("kernel-x86_64");
+    std::fs::copy(kernel_binary, &to).with_context(|| {
+        format!(
+            "failed to copy kernel from {} to {}",
+            kernel_binary.display(),
+            to.display()
+        )
+    })?;
+
+    Ok(())
+}

tests/runner/src/lib.rs

@@ -11,6 +11,12 @@ const QEMU_ARGS: &[&str] = &[
 ];
 
 pub fn run_test_kernel(kernel_binary_path: &str) {
+    run_test_kernel_on_uefi(kernel_binary_path);
+    run_test_kernel_on_uefi_pxe(kernel_binary_path);
+    // TODO: run tests with BIOS bootloader too
+}
+
+pub fn run_test_kernel_on_uefi(kernel_binary_path: &str) {
     let kernel_path = Path::new(kernel_binary_path);
     let out_fat_path = kernel_path.with_extension("fat");
     bootloader::create_boot_partition(kernel_path, &out_fat_path).unwrap();
@@ -19,8 +25,6 @@ pub fn run_test_kernel(kernel_binary_path: &str) {
     let out_mbr_path = kernel_path.with_extension("mbr");
     bootloader::create_bios_disk_image(&out_fat_path, &out_mbr_path).unwrap();
 
-    // TODO: run tests with BIOS bootloader too
-
     let mut run_cmd = Command::new("qemu-system-x86_64");
     run_cmd
         .arg("-drive")
@@ -42,3 +46,33 @@ pub fn run_test_kernel(kernel_binary_path: &str) {
         other => panic!("Test failed with unexpected exit code `{:?}`", other),
     }
 }
+
+pub fn run_test_kernel_on_uefi_pxe(kernel_binary_path: &str) {
+    let kernel_path = Path::new(kernel_binary_path);
+    let out_tftp_path = kernel_path.with_extension(".tftp");
+
+    bootloader::create_uefi_pxe_tftp_folder(kernel_path, &out_tftp_path).unwrap();
+
+    let mut run_cmd = Command::new("qemu-system-x86_64");
+    run_cmd.arg("-netdev").arg(format!(
+        "user,id=net0,net=192.168.17.0/24,tftp={},bootfile=bootloader,id=net0",
+        out_tftp_path.display()
+    ));
+    run_cmd.arg("-device").arg("virtio-net-pci,netdev=net0");
+    run_cmd.args(QEMU_ARGS);
+    run_cmd.arg("-bios").arg(ovmf_prebuilt::ovmf_pure_efi());
+
+    let child_output = run_cmd.output().unwrap();
+    strip_ansi_escapes::Writer::new(std::io::stderr())
+        .write_all(&child_output.stderr)
+        .unwrap();
+    strip_ansi_escapes::Writer::new(std::io::stderr())
+        .write_all(&child_output.stdout)
+        .unwrap();
+
+    match child_output.status.code() {
+        Some(33) => {} // success
+        Some(35) => panic!("Test failed"),
+        other => panic!("Test failed with unexpected exit code `{:?}`", other),
+    }
+}

uefi/Cargo.toml

@@ -11,5 +11,5 @@ license = "MIT/Apache-2.0"
 bootloader_api = { version = "0.1.0-alpha.0", path = "../api" }
 bootloader-x86_64-common = { version = "0.1.0-alpha.0", path = "../common" }
 log = "0.4.14"
-uefi = "0.13.0"
+uefi = "0.16.0"
 x86_64 = "0.14.8"