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/* SPDX-License-Identifier: GPL-2.0-only */
#include <cpu/intel/post_codes.h>
#include <cpu/x86/mtrr.h>
#include <cpu/x86/cache.h>
#include <cpu/x86/post_code.h>
#define NoEvictMod_MSR 0x2e0
.code32
.global chipset_teardown_car
chipset_teardown_car:
pop %esp
post_code(POSTCODE_POSTCAR_DISABLE_CACHE)
/* Disable cache. */
movl %cr0, %eax
orl $CR0_CacheDisable, %eax
movl %eax, %cr0
post_code(POSTCODE_POSTCAR_DISABLE_DEF_MTRR)
/* Disable MTRR. */
movl $MTRR_DEF_TYPE_MSR, %ecx
rdmsr
andl $(~MTRR_DEF_TYPE_EN), %eax
wrmsr
/* Disable the no eviction run state */
movl $NoEvictMod_MSR, %ecx
rdmsr
andl $~2, %eax
wrmsr
andl $~1, %eax
wrmsr
post_code(POSTCODE_POSTCAR_TEARDOWN_DONE)
/* Return to caller. */
jmp *%esp
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