[libcpu/aarch64] fix cache invalidate operation (#7363)

2026-09-25 06:13:56 +08:00 · 2023-04-26 17:17:42 +08:00
parent c34608b4a9
commit 6e7c5d9bc9
2 changed files with 7 additions and 3 deletions
@@ -23,9 +23,13 @@ void rt_hw_cpu_dcache_invalidate(void *start_addr, unsigned long size);

 static inline void rt_hw_icache_invalidate_all(void)
 {
-    /* wait for any modification complete */
+    /* wait for previous modification to complete */
    __asm__ volatile ("dsb ishst");
-    __asm__ volatile ("ic iallu");
+
+    __asm__ volatile ("ic ialluis");
+    /* wait for ic to retire */
+    __asm__ volatile ("dsb nsh");
+    /* flush instruction pipeline */
    __asm__ volatile ("isb");
 }