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 imply ENABLE_MRC_CACHE
14 if NORTHBRIDGE_INTEL_IVYBRIDGE
16 config DCACHE_RAM_BASE
19 config DCACHE_RAM_SIZE
22 config DCACHE_RAM_MRC_VAR_SIZE
25 config CPU_SPECIFIC_OPTIONS
35 bool "Enable VMX for virtualization"
38 Virtual Machine Extensions are provided in many x86 CPUs. These
39 provide various facilities for allowing a host OS to provide an
40 environment where potentially several guest OSes have only
41 limited access to the underlying hardware. This is achieved
42 without resorting to software trapping and/or instruction set
43 emulation (which would be very slow).
45 Intel's implementation of this is called VT-x. This option enables
46 VT-x this so that the OS that is booted by U-Boot can make use of
47 these facilities. If this option is not enabled, then the host OS
48 will be unable to support virtualisation, or it will run very