2 # From Coreboot src/northbridge/intel/sandybridge/Kconfig
4 # Copyright (C) 2010 Google Inc.
6 # SPDX-License-Identifier: GPL-2.0
8 config NORTHBRIDGE_INTEL_IVYBRIDGE
10 select CACHE_MRC_BIN if HAVE_MRC
12 if NORTHBRIDGE_INTEL_IVYBRIDGE
14 config DCACHE_RAM_BASE
17 config DCACHE_RAM_SIZE
20 config DCACHE_RAM_MRC_VAR_SIZE
23 config CPU_SPECIFIC_OPTIONS
33 bool "Enable VMX for virtualization"
36 Virtual Machine Extensions are provided in many x86 CPUs. These
37 provide various facilities for allowing a host OS to provide an
38 environment where potentially several guest OSes have only
39 limited access to the underlying hardware. This is achieved
40 without resorting to software trapping and/or instruction set
41 emulation (which would be very slow).
43 Intel's implementation of this is called VT-x. This option enables
44 VT-x this so that the OS that is booted by U-Boot can make use of
45 these facilities. If this option is not enabled, then the host OS
46 will be unable to support virtualisation, or it will run very