fix(aarch64): disable SPAN by default (#9)

yeanwang666 · web-flow · commit fdbf401a358b · 2025-11-11T16:03:27.000+08:00
diff --git a/src/aarch64/init.rs b/src/aarch64/init.rs
@@ -91,6 +91,8 @@ pub unsafe fn init_mmu(root_paddr: PhysAddr) {
 
     // Enable the MMU and turn on I-cache and D-cache
     SCTLR_EL1.modify(SCTLR_EL1::M::Enable + SCTLR_EL1::C::Cacheable + SCTLR_EL1::I::Cacheable);
+    // Disable SPAN
+    SCTLR_EL1.set(SCTLR_EL1.get() | (1 << 23));
     barrier::isb(barrier::SY);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -91,6 +91,8 @@ pub unsafe fn init_mmu(root_paddr: PhysAddr) {`
`91`	`91`
`92`	`92`	`// Enable the MMU and turn on I-cache and D-cache`
`93`	`93`	`SCTLR_EL1.modify(SCTLR_EL1::M::Enable + SCTLR_EL1::C::Cacheable + SCTLR_EL1::I::Cacheable);`
	`94`	`+ // Disable SPAN`
	`95`	`+ SCTLR_EL1.set(SCTLR_EL1.get() \| (1 << 23));`
`94`	`96`	`barrier::isb(barrier::SY);`
`95`	`97`	`}`
`96`	`98`