add rng device on qemu + passing rng test

Author: gelven4sec

uefi-test-runner/src/proto/rng.rs

@@ -5,10 +5,16 @@ use uefi::table::boot::{BootServices, OpenProtocolAttributes, OpenProtocolParams
 pub fn test(image: Handle, bt: &BootServices) {
  info!("Running rng protocol test");
 
+ let handle = *bt
+ .find_handles::<Rng>()
+ .expect_success("Failed to get Rng handles")
+ .first()
+ .expect("No Rng handles");
+
  let rng = bt
  .open_protocol::<Rng>(
  OpenProtocolParams {
- handle: image,
+ handle,
  agent: image,
  controller: None,
  },

xtask/src/qemu.rs

@@ -277,6 +277,8 @@ pub fn run_qemu(arch: UefiArch, opt: &QemuOpt) -> Result<()> {
  // QEMU by defaults enables a ton of devices which slow down boot.
  cmd.arg("-nodefaults");
 
+ cmd.args(&["-device", "virtio-rng-pci"]);
+
  match arch {
  UefiArch::AArch64 => {
  // Use a generic ARM environment. Sadly qemu can't emulate a