u-boot/arch/x86/cpu/ivybridge/Kconfig

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# SPDX-License-Identifier: GPL-2.0
#
# From Coreboot src/northbridge/intel/sandybridge/Kconfig
#
# Copyright (C) 2010 Google Inc.
#
config NORTHBRIDGE_INTEL_IVYBRIDGE
bool
select CACHE_MRC_BIN if HAVE_MRC
imply HAVE_INTEL_ME
imply ENABLE_MRC_CACHE
imply AHCI_PCI
imply ICH_SPI
imply INTEL_ICH6_GPIO
imply PINCTRL_ICH6
imply SCSI
imply SCSI_AHCI
imply SPI_FLASH
imply USB
imply USB_EHCI_HCD
imply USB_XHCI_HCD
imply VIDEO_VESA
imply SOUND_IVYBRIDGE
if NORTHBRIDGE_INTEL_IVYBRIDGE
config DCACHE_RAM_BASE
default 0xff7e0000
config DCACHE_RAM_SIZE
default 0x20000
config DCACHE_RAM_MRC_VAR_SIZE
default 0x4000
config CPU_SPECIFIC_OPTIONS
def_bool y
select SMM_TSEG
x86: ivybridge: Implement SDRAM init Implement SDRAM init using the Memory Reference Code (mrc.bin) provided in the board directory and the SDRAM SPD information in the device tree. This also needs the Intel Management Engine (me.bin) to work. Binary blobs everywhere: so far we have MRC, ME and microcode. SDRAM init works by setting up various parameters and calling the MRC. This in turn does some sort of magic to work out how much memory there is and the timing parameters to use. It also sets up the DRAM controllers. When the MRC returns, we use the information it provides to map out the available memory in U-Boot. U-Boot normally moves itself to the top of RAM. On x86 the RAM is not generally contiguous, and anyway some RAM may be above 4GB which doesn't work in 32-bit mode. So we relocate to the top of the largest block of RAM we can find below 4GB. Memory above 4GB is accessible with special functions (see physmem). It would be possible to build U-Boot in 64-bit mode but this wouldn't necessarily provide any more memory, since the largest block is often below 4GB. Anyway U-Boot doesn't need huge amounts of memory - even a very large ramdisk seldom exceeds 100-200MB. U-Boot has support for booting 64-bit kernels directly so this does not pose a limitation in that area. Also there are probably parts of U-Boot that will not work correctly in 64-bit mode. The MRC is one. There is some work remaining in this area. Since memory init is very slow (over 500ms) it is possible to save the parameters in SPI flash to speed it up next time. Suspend/resume support is not fully implemented, or at least it is not efficient. With this patch, link boots to a prompt. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-13 05:42:28 +00:00
select X86_RAMTEST
config SMM_TSEG_SIZE
hex
default 0x800000
config ENABLE_VMX
bool "Enable VMX for virtualization"
help
Virtual Machine Extensions are provided in many x86 CPUs. These
provide various facilities for allowing a host OS to provide an
environment where potentially several guest OSes have only
limited access to the underlying hardware. This is achieved
without resorting to software trapping and/or instruction set
emulation (which would be very slow).
Intel's implementation of this is called VT-x. This option enables
VT-x this so that the OS that is booted by U-Boot can make use of
these facilities. If this option is not enabled, then the host OS
will be unable to support virtualisation, or it will run very
slowly.
config FSP_ADDR
hex
default 0xfff80000
config FSP_BROKEN_HOB
bool
default y
endif