diff options
Diffstat (limited to 'bsps/arm/shared/start/start.S')
| -rw-r--r-- | bsps/arm/shared/start/start.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/bsps/arm/shared/start/start.S b/bsps/arm/shared/start/start.S index 9ebc2818e5..f4880dfcf0 100644 --- a/bsps/arm/shared/start/start.S +++ b/bsps/arm/shared/start/start.S @@ -181,6 +181,17 @@ _start: mov r13, #0 #endif +#if __ARM_ARCH >= 7 + /* + * Write to BPIALL (Branch Predictor Invalidate All) to invalidate all + * branch predictors. There is no need to use BPIALLIS (Branch + * Predictor Invalidate All, Inner Shareable) since this code is + * executed on all processors used by RTEMS. + */ + mov r0, #0 + mcr p15, 0, r0, c7, c5, 6 +#endif + #ifdef RTEMS_SMP /* Read MPIDR and get current processor index */ mrc p15, 0, r7, c0, c0, 5 |