1 # SPDX-License-Identifier: GPL-2.0
3 # From Coreboot src/northbridge/intel/sandybridge/Kconfig
5 # Copyright (C) 2010 Google Inc.
8 config NORTHBRIDGE_INTEL_IVYBRIDGE
10 select CACHE_MRC_BIN if HAVE_MRC
13 imply ENABLE_MRC_CACHE
27 if NORTHBRIDGE_INTEL_IVYBRIDGE
29 config DCACHE_RAM_BASE
32 config DCACHE_RAM_SIZE
35 config DCACHE_RAM_MRC_VAR_SIZE
38 config CPU_SPECIFIC_OPTIONS
48 bool "Enable VMX for virtualization"
50 Virtual Machine Extensions are provided in many x86 CPUs. These
51 provide various facilities for allowing a host OS to provide an
52 environment where potentially several guest OSes have only
53 limited access to the underlying hardware. This is achieved
54 without resorting to software trapping and/or instruction set
55 emulation (which would be very slow).
57 Intel's implementation of this is called VT-x. This option enables
58 VT-x this so that the OS that is booted by U-Boot can make use of
59 these facilities. If this option is not enabled, then the host OS
60 will be unable to support virtualisation, or it will run very