diff options
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv8/start.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index 2ee60d60f1..67b166c7fd 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -168,6 +168,25 @@ apply_a57_core_errata: msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */ #endif +#ifdef CONFIG_ARM_ERRATA_833471 + mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */ + /* FPSCR write flush. + * Note that in some cases where a flush is unnecessary this + could impact performance. */ + orr x0, x0, #1 << 38 + msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */ +#endif + +#ifdef CONFIG_ARM_ERRATA_829520 + mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */ + /* Disable Indirect Predictor bit will prevent this erratum + from occurring + * Note that in some cases where a flush is unnecessary this + could impact performance. */ + orr x0, x0, #1 << 4 + msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */ +#endif + #ifdef CONFIG_ARM_ERRATA_833069 mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */ /* Disable Enable Invalidates of BTB bit */ |