diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv8/start.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index 670e323..dfce469 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -81,6 +81,14 @@ reset: msr cpacr_el1, x0 /* Enable FP/SIMD */ 0: + /* Enalbe SMPEN bit for coherency. + * This register is not architectural but at the moment + * this bit should be set for A53/A57/A72. + */ + mrs x0, S3_1_c15_c2_1 /* cpuactlr_el1 */ + orr x0, x0, #0x40 + msr S3_1_c15_c2_1, x0 + /* Apply ARM core specific erratas */ bl apply_core_errata |