diff options
Diffstat (limited to 'src/soc/intel/apollolake/exit_car.S')
| -rw-r--r-- | src/soc/intel/apollolake/exit_car.S | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/src/soc/intel/apollolake/exit_car.S b/src/soc/intel/apollolake/exit_car.S index 339242b319..e21aa294ce 100644 --- a/src/soc/intel/apollolake/exit_car.S +++ b/src/soc/intel/apollolake/exit_car.S @@ -27,14 +27,34 @@ chipset_teardown_car: */ pop %ebx - /* invalidate cache contents. */ - invd /* Disable MTRRs. */ mov $(MTRR_DEF_TYPE_MSR), %ecx rdmsr and $(~(MTRR_DEF_TYPE_EN | MTRR_DEF_TYPE_FIX_EN)), %eax wrmsr +#if IS_ENABLED(CONFIG_CAR_CQOS) + /* Go back to all-evicting mode, set both masks to all-1s */ + mov $MSR_L2_QOS_MASK(0), %ecx + rdmsr + mov $~0, %al + wrmsr + + mov $MSR_L2_QOS_MASK(1), %ecx + rdmsr + mov $~0, %al + wrmsr + + /* Reset CLOS selector to 0 */ + mov $MSR_IA32_PQR_ASSOC, %ecx + rdmsr + and $~IA32_PQR_ASSOC_MASK, %edx + wrmsr +#endif + /* invalidate cache contents. */ + invd + +#if IS_ENABLED(CONFIG_CAR_NEM) /* Knock down bit 1 then bit 0 of NEM control not combining steps. */ mov $(MSR_EVICT_CTL), %ecx rdmsr @@ -42,6 +62,7 @@ chipset_teardown_car: wrmsr and $(~(1 << 0)), %eax wrmsr +#endif /* Return to caller. */ jmp *%ebx |