diff options
Diffstat (limited to 'src/soc/intel/apollolake/exit_car.S')
| -rw-r--r-- | src/soc/intel/apollolake/exit_car.S | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/src/soc/intel/apollolake/exit_car.S b/src/soc/intel/apollolake/exit_car.S deleted file mode 100644 index e21aa294ce..0000000000 --- a/src/soc/intel/apollolake/exit_car.S +++ /dev/null @@ -1,68 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2016 Google Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; version 2 of - * the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <cpu/x86/mtrr.h> -#include <cpu/x86/cr.h> -#include <soc/cpu.h> - -.text -.global chipset_teardown_car -chipset_teardown_car: - /* - * Retrieve return address from stack as it will get trashed below if - * execution is utilizing the cache-as-ram stack. - */ - pop %ebx - - /* 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 - and $(~(1 << 1)), %eax - wrmsr - and $(~(1 << 0)), %eax - wrmsr -#endif - - /* Return to caller. */ - jmp *%ebx |