diff options
Diffstat (limited to 'arch/arm/cpu/armv8/start.S')
| -rw-r--r-- | arch/arm/cpu/armv8/start.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index 4f5f6d8..5308702 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -86,6 +86,17 @@ save_boot_params_ret: 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. + */ +#ifdef CONFIG_ARMV8_SET_SMPEN + mrs x0, S3_1_c15_c2_1 /* cpuactlr_el1 */ + orr x0, x0, #0x40 + msr S3_1_c15_c2_1, x0 +#endif + /* Apply ARM core specific erratas */ bl apply_core_errata |