chore: replace lazy_static to spin::lazy::Lazy

Signed-off-by: tfx2001 <[email protected]>

Cargo.toml

@@ -15,7 +15,6 @@ riscv = "0.10"
 spin = "0.9"
 fast-trap = { version = "0.0.1", features = ["riscv-m"] }
 riscv-decode = "0.2.1"
-lazy_static = { version = "1.5.0", features = ["spin_no_std"] }
 
 [build-dependencies]
 hpm-rt = { git = "https://github.com/hpm-rs/hpm-rt.git", rev = "66ffb7d7a65d7251d0b47db9599d36cefc4d6703" }

src/extension.rs

@@ -1,4 +1,5 @@
 use rustsbi::RustSBI;
+use spin::Lazy;
 
 use crate::board::{board_init_timer, MachineTimer};
 
@@ -8,10 +9,6 @@ pub struct FixedRustSBI {
     pub timer: MachineTimer,
 }
 
-lazy_static! {
-    pub static ref SBI: FixedRustSBI = {
-        FixedRustSBI {
-            timer: board_init_timer(),
-        }
-    };
-}
+pub static SBI: Lazy<FixedRustSBI> = Lazy::new(|| FixedRustSBI {
+    timer: board_init_timer(),
+});

src/main.rs

@@ -3,9 +3,6 @@
 #![feature(naked_functions, asm_const)]
 #![deny(warnings)]
 
-#[macro_use]
-extern crate lazy_static;
-
 mod board;
 mod extension;
 mod loader;