uefi-raw: Add TimestampProtocol

Author: nicholasbishop

uefi-raw/CHANGELOG.md

@@ -1,5 +1,8 @@
 # uefi-raw - [Unreleased]
 
+## Added
+- Added `TimestampProtocol`.
+
 # uefi-raw - 0.5.1 (2024-03-17)
 
 ## Added

uefi-raw/src/protocol/misc.rs

@@ -0,0 +1,24 @@
+use crate::{guid, Guid, Status};
+
+#[derive(Debug)]
+#[repr(C)]
+pub struct TimestampProtocol {
+    pub get_timestamp: unsafe extern "efiapi" fn() -> u64,
+    pub get_properties: unsafe extern "efiapi" fn(*mut TimestampProperties) -> Status,
+}
+
+impl TimestampProtocol {
+    pub const GUID: Guid = guid!("afbfde41-2e6e-4262-ba65-62b9236e5495");
+}
+
+/// Properties of the timestamp counter.
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[repr(C)]
+pub struct TimestampProperties {
+    /// Timestamp counter frequency, in Hz.
+    frequency: u64,
+
+    /// The maximum value of the timestamp counter before it rolls over. For
+    /// example, a 24-bit counter would have an end value of `0xff_ffff`.
+    end_value: u64,
+}

uefi-raw/src/protocol/mod.rs

@@ -13,6 +13,7 @@ pub mod file_system;
 pub mod loaded_image;
 pub mod media;
 pub mod memory_protection;
+pub mod misc;
 pub mod network;
 pub mod rng;
 pub mod shell_params;