[rtems commit] bsp/aarch64: Flush the cache before invalidating it

[Chris Johns]

Module:    rtems
Branch:    master
Commit:    bfc99a6e70f32dabf6557d5dcbaa3cd7ab93bed0
Changeset: http://git.rtems.org/rtems/commit/?id=bfc99a6e70f32dabf6557d5dcbaa3cd7ab93bed0

Author:    Chris Johns <chrisj at rtems.org>
Date:      Thu May 26 16:05:09 2022 +1000

bsp/aarch64: Flush the cache before invalidating it

- Any page tables need to be flushed if the cache is enabled.
  Disabling the cache may only be available in secure mode.

---

 bsps/aarch64/include/bsp/aarch64-mmu.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bsps/aarch64/include/bsp/aarch64-mmu.h b/bsps/aarch64/include/bsp/aarch64-mmu.h
index b1a471d534..6e589cd6cd 100644
--- a/bsps/aarch64/include/bsp/aarch64-mmu.h
+++ b/bsps/aarch64/include/bsp/aarch64-mmu.h
@@ -362,7 +362,8 @@ aarch64_mmu_enable( void )
 
   /* CPUECTLR_EL1.SMPEN is already set on ZynqMP and is not writable */
 
-  /* Invalidate cache */
+  /* Flush and invalidate cache */
+  rtems_cache_flush_entire_data();
   rtems_cache_invalidate_entire_data();
 
   /* Enable MMU and cache */