[rtems commit] bsp/tms570: Initialize and enable caches on demand
Sebastian Huber
sebh at rtems.org
Mon Jan 15 09:36:31 UTC 2024
Module: rtems
Branch: master
Commit: 5a2f64cf3451a98bc77ce3620ce9829c36917d9e
Changeset: http://git.rtems.org/rtems/commit/?id=5a2f64cf3451a98bc77ce3620ce9829c36917d9e
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Thu Dec 21 15:16:49 2023 +0100
bsp/tms570: Initialize and enable caches on demand
Update #4982.
---
bsps/arm/tms570/start/bspstarthooks.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/bsps/arm/tms570/start/bspstarthooks.c b/bsps/arm/tms570/start/bspstarthooks.c
index 81ad42f449..8dc7fdfdf8 100644
--- a/bsps/arm/tms570/start/bspstarthooks.c
+++ b/bsps/arm/tms570/start/bspstarthooks.c
@@ -40,9 +40,34 @@
*/
#include <bsp/start.h>
+#include <libcpu/arm-cp15.h>
BSP_START_TEXT_SECTION void bsp_start_hook_1( void )
{
+ uint32_t ctrl;
+ size_t size;
+
+ ctrl = arm_cp15_get_control();
+
+ if ( ( ctrl & ARM_CP15_CTRL_I ) == 0 ) {
+ rtems_cache_invalidate_entire_instruction();
+ ctrl |= ARM_CP15_CTRL_I;
+ arm_cp15_set_control(ctrl);
+ }
+
+ if ( ( ctrl & ARM_CP15_CTRL_C ) == 0 ) {
+ rtems_cache_invalidate_entire_data();
+ ctrl |= ARM_CP15_CTRL_C;
+ arm_cp15_set_control(ctrl);
+ }
+
bsp_start_copy_sections_compact();
bsp_start_clear_bss();
+
+ size =(size_t) bsp_section_fast_text_size;
+ RTEMS_OBFUSCATE_VARIABLE( size );
+
+ if ( size != 0 ) {
+ rtems_cache_flush_multiple_data_lines( bsp_section_fast_text_begin, size );
+ }
}
More information about the vc
mailing list