coreboot-kgpe-d16/src/devices/Kconfig

##
## This file is part of the coreboot project.
##
## Copyright (C) 2007-2010 coresystems GmbH
## (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
##

config VGA_BRIDGE_SETUP
	bool "Setup bridges on path to VGA adapter"
	default y
	help
	  Allow bridges to set up legacy decoding ranges for VGA. Don't disable
	  this unless you're sure you don't want the briges setup for VGA.

# TODO: Explain differences (if any) for onboard cards.
config VGA_ROM_RUN
	bool "Run VGA option ROMs"
	default y
	help
	  Execute VGA option ROMs, if found. This is required to enable
	  PCI/AGP/PCI-E video cards.

config PCI_ROM_RUN
	bool "Run non-VGA option ROMs"
	default y
	help
	  Execute non-VGA PCI option ROMs, if found.

	  Examples include IDE/SATA controller option ROMs and option ROMs
	  for network cards (NICs).

choice
	prompt "Option ROM execution type"
	default PCI_OPTION_ROM_RUN_YABEL if !ARCH_X86
	default PCI_OPTION_ROM_RUN_REALMODE if ARCH_X86
	depends on PCI_ROM_RUN || VGA_ROM_RUN

config PCI_OPTION_ROM_RUN_REALMODE
	prompt "Native mode"
	bool
	depends on ARCH_X86
	help
	  If you select this option, PCI option ROMs will be executed
	  natively on the CPU in real mode. No CPU emulation is involved,
	  so this is the fastest, but also the least secure option.
	  (only works on x86/x64 systems)

config PCI_OPTION_ROM_RUN_YABEL
	prompt "Secure mode"
	bool
	help
	  If you select this option, the x86emu CPU emulator will be used to
	  execute PCI option ROMs.

	  This option prevents option ROMs from doing dirty tricks with the
	  system (such as installing SMM modules or hypervisors), but it is
	  also significantly slower than the native option ROM initialization
	  method.

	  This is the default choice for non-x86 systems.

endchoice

# TODO: Describe better, and/or make a "choice" selection for this.
config YABEL_DEBUG_FLAGS
	prompt "Hex value for YABEL debug flags"
	hex
	default 0x0
	depends on PCI_OPTION_ROM_RUN_YABEL
	help
	  CONFIG_YABEL_DEBUG_FLAGS is a binary switch that allows you
	  to select the following items to debug. 1=on 0=off. After you
	  decide what you want to debug create the binary value, convert to
	  hex and set the option.

	  Example for "debug all":
	    CONFIG_YABEL_DEBUG_FLAGS = 0x31FF

	  |-DEBUG_JMP - Print info about JMP and RETF opcodes from x86emu
	  ||-DEBUG_TRACE_X86EMU - Print _all_ opcodes that are executed by
	  ||                      x86emu (WARNING: this will produce a LOT
	  ||                      of output)
	  |||-Currently unused
	  ||||-Currently unused
	  |||||-Currently unused
	  ||||||-DEBUG_PNP - Print Plug And Play accesses made by option ROM
	  |||||||-DEBUG_DISK - Print Disk I/O related messages, currently unused
	  ||||||||-DEBUG_PMM - Print messages related to POST Memory
	  ||||||||             Manager (PMM)
	  |||||||||-DEBUG_VBE - Print messages related to VESA BIOS Extension
	  |||||||||             (VBE) functions
	  ||||||||||-DEBUG_PRINT_INT10 - Let INT10 (i.e. character output)
	  ||||||||||                     calls print messages to debug output
	  |||||||||||-DEBUG_INTR - Print messages related to interrupt handling
	  ||||||||||||-DEBUG_CHECK_VMEM_ACCESS - Print messages related to
	  ||||||||||||                           accesses to certain areas of
	  ||||||||||||                           the virtual memory (e.g. BDA
	  ||||||||||||                           (BIOS Data Area) or interrupt
	  ||||||||||||                           vectors)
	  |||||||||||||-DEBUG_MEM - Print memory accesses made by option ROM
	  |||||||||||||             (NOTE: this also includes accesses to
	  |||||||||||||             fetch instructions)
	  ||||||||||||||-DEBUG_IO - Print I/O accesses made by option ROM
	  11000111111111 - Maximum binary value, i.e. "debug all"
	                   (WARNING: This could run for hours)

	  DEBUG_IO			0x0001
	  DEBUG_MEM			0x0002
	  DEBUG_CHECK_VMEM_ACCESS	0x0004
	  DEBUG_INTR			0x0008
	  DEBUG_PRINT_INT10		0x0010
	  DEBUG_VBE			0x0020
	  DEBUG_PMM			0x0040
	  DEBUG_DISK			0x0080
	  DEBUG_PNP			0x0100
	  DEBUG_TRACE_X86EMU		0x1000
	  DEBUG_JMP			0x2000

	  See debug.h for values. 0 is no debug output, 0x31ff is _verbose_.

config YABEL_PCI_ACCESS_OTHER_DEVICES
	prompt "Allow option ROMs to access other devices"
	bool
	depends on PCI_OPTION_ROM_RUN_YABEL
	help
	  Per default, YABEL only allows option ROMs to access the PCI device
	  that they are associated with. However, this causes trouble for some
	  onboard graphics chips whose option ROM needs to reconfigure the
	  north bridge.

config YABEL_VIRTMEM_LOCATION
	prompt "Location of YABEL's virtual memory"
	hex
	depends on PCI_OPTION_ROM_RUN_YABEL && EXPERT
	default 0x1000000
	help
	  YABEL requires 1MB memory for its CPU emulation. This memory is
	  normally located at 16MB.

config YABEL_DIRECTHW
	prompt "Direct hardware access"
	bool
	depends on PCI_OPTION_ROM_RUN_YABEL
	help
	  YABEL consists of two parts: It uses x86emu for the CPU emulation and
	  additionally provides a PC system emulation that filters bad device
	  and memory access (such as PCI config space access to other devices
	  than the initialized one).

	  When choosing this option, x86emu will pass through all hardware
	  accesses to memory and I/O devices to the underlying memory and I/O
	  addresses. While this option prevents option ROMs from doing dirty
	  tricks with the CPU (such as installing SMM modules or hypervisors),
	  they can still access all devices in the system.
	  Enable this option for a good compromise between security and speed.

config CONSOLE_VGA_MULTI
	bool
	default n

config PCI_64BIT_PREF_MEM
	bool
	default n

config HYPERTRANSPORT_PLUGIN_SUPPORT
	bool
	default n

config PCIX_PLUGIN_SUPPORT
	bool
	default y

config PCIEXP_PLUGIN_SUPPORT
	bool
	default y

config AGP_PLUGIN_SUPPORT
	bool
	default y

config CARDBUS_PLUGIN_SUPPORT
	bool
	default y