Merge pull request #80 from ZhengLongBing/main

spec: add FWFT extension support to SBI implementation

sbi-spec/CHANGELOG.md

@@ -7,7 +7,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 ## [Unreleased]
 
 ### Added
+
 - pmu: add config flags with bitflags in chapter 11
+- fwft: add support for FWFT extension in chapter 18
 
 ### Modified
 

sbi-spec/src/fwft.rs

@@ -0,0 +1,17 @@
+//! Chapter 18. Firmware Features Extension (EID #0x46574654 "FWFT").
+
+/// Extension ID for Firmware Features Extension.
+pub const EID_FWFT: usize = crate::eid_from_str("FWFT") as _;
+pub use fid::*;
+
+/// Declared in §18.3.
+mod fid {
+    /// Set the firmware function of the request based on Value and Flags parameters.
+    ///
+    /// Declared in §18.1.
+    pub const SET: usize = 0;
+    /// Return to the firmware function configuration value.
+    ///
+    /// Declared in §18.2.
+    pub const GET: usize = 1;
+}

sbi-spec/src/lib.rs

@@ -46,7 +46,8 @@ pub mod cppc;
 pub mod nacl;
 // §16
 pub mod sta;
-
+// §18
+pub mod fwft;
 /// Converts SBI EID from str.
 const fn eid_from_str(name: &str) -> i32 {
     match *name.as_bytes() {
@@ -335,4 +336,12 @@ mod tests {
         const_assert_eq!(0x535441, EID_STA);
         const_assert_eq!(0, SET_SHMEM);
     }
+    // §18
+    #[test]
+    fn test_fwft() {
+        use crate::fwft::*;
+        const_assert_eq!(0x46574654, EID_FWFT);
+        const_assert_eq!(0, SET);
+        const_assert_eq!(1, GET);
+    }
 }