[rtems commit] arm/raspberrypi: use cache manager operations to flush/ invalidate all cache levels.

[Pavel Pisa]

Module:    rtems
Branch:    4.11
Commit:    d3a428cafa8b7c9426a7bafecc692eba388a2d67
Changeset: http://git.rtems.org/rtems/commit/?id=d3a428cafa8b7c9426a7bafecc692eba388a2d67

Author:    Pavel Pisa <pisa at cmp.felk.cvut.cz>
Date:      Sun Jul 17 18:45:46 2016 +0200

arm/raspberrypi: use cache manager operations to flush/invalidate all cache levels.

This fix strange behavior where some stale content has been
stored in level 2 cache before RTEMS has been start from U-boot
which has reappeared after MMU enable and shadow vector
table at start of SDRAM.

Updates #2782
Updates #2783

---

 c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c b/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c
index d44be03..2504015 100644
--- a/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c
+++ b/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c
@@ -46,18 +46,18 @@ void BSP_START_TEXT_SECTION bsp_start_hook_0(void)
        * If the data cache is on then ensure that it is clean
        * before switching off to be extra carefull.
        */
-      arm_cp15_drain_write_buffer();
-      arm_cp15_data_cache_clean_and_invalidate();
+      rtems_cache_flush_entire_data();
+      rtems_cache_invalidate_entire_data();
     }
     arm_cp15_flush_prefetch_buffer();
     sctlr_val &= ~(ARM_CP15_CTRL_I | ARM_CP15_CTRL_C | ARM_CP15_CTRL_M | ARM_CP15_CTRL_A);
     arm_cp15_set_control(sctlr_val);
-
-    arm_cp15_tlb_invalidate();
-    arm_cp15_flush_prefetch_buffer();
-    arm_cp15_data_cache_invalidate();
-    arm_cp15_instruction_cache_invalidate();
   }
+  rtems_cache_invalidate_entire_data();
+  rtems_cache_invalidate_entire_instruction();
+  arm_cp15_branch_predictor_invalidate_all();
+  arm_cp15_tlb_invalidate();
+  arm_cp15_flush_prefetch_buffer();
 
   /* Clear Translation Table Base Control Register */
   arm_cp15_set_translation_table_base_control_register(0);