[mirror_ubuntu-bionic-kernel.git] / drivers / firmware / Kconfig

#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

menu "Firmware Drivers"

config EDD
	tristate "BIOS Enhanced Disk Drive calls determine boot disk (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	depends on !IA64
	help
	  Say Y or M here if you want to enable BIOS Enhanced Disk Drive
	  Services real mode BIOS calls to determine which disk
	  BIOS tries boot from.  This information is then exported via sysfs.

	  This option is experimental and is known to fail to boot on some
          obscure configurations. Most disk controller BIOS vendors do
          not yet implement this feature.

config EFI_VARS
	tristate "EFI Variable Support via sysfs"
	depends on EFI
	default n
	help
	  If you say Y here, you are able to get EFI (Extensible Firmware
	  Interface) variable information via sysfs.  You may read,
	  write, create, and destroy EFI variables through this interface.

	  Note that using this driver in concert with efibootmgr requires
	  at least test release version 0.5.0-test3 or later, which is
	  available from Matt Domsch's website located at:
	  <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>

	  Subsequent efibootmgr releases may be found at:
	  <http://linux.dell.com/efibootmgr>

config EFI_PCDP
	bool "Console device selection via EFI PCDP or HCDP table"
	depends on ACPI && EFI && IA64
	default y if IA64
	help
	  If your firmware supplies the PCDP table, and you want to
	  automatically use the primary console device it describes
	  as the Linux console, say Y here.

	  If your firmware supplies the HCDP table, and you want to
	  use the first serial port it describes as the Linux console,
	  say Y here.  If your EFI ConOut path contains only a UART
	  device, it will become the console automatically.  Otherwise,
	  you must specify the "console=hcdp" kernel boot argument.

	  Neither the PCDP nor the HCDP affects naming of serial devices,
	  so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
	  on how the driver discovers devices.

	  You must also enable the appropriate drivers (serial, VGA, etc.)

	  See <http://www.dig64.org/specifications/DIG64_HCDPv20_042804.pdf>

config DELL_RBU
	tristate "BIOS update support for DELL systems via sysfs"
	select FW_LOADER
	help
	 Say m if you want to have the option of updating the BIOS for your
	 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
	 supporting application to comunicate with the BIOS regarding the new
	 image for the image update to take effect.
	 See <file:Documentation/dell_rbu.txt> for more details on the driver.
endmenu
Commit	Line	Data
1da177e4 LT	1	#
	2	# For a description of the syntax of this configuration file,
	3	# see Documentation/kbuild/kconfig-language.txt.
	4	#
	5
	6	menu "Firmware Drivers"
	7
	8	config EDD
	9	tristate "BIOS Enhanced Disk Drive calls determine boot disk (EXPERIMENTAL)"
	10	depends on EXPERIMENTAL
	11	depends on !IA64
	12	help
	13	Say Y or M here if you want to enable BIOS Enhanced Disk Drive
	14	Services real mode BIOS calls to determine which disk
	15	BIOS tries boot from. This information is then exported via sysfs.
	16
	17	This option is experimental and is known to fail to boot on some
	18	obscure configurations. Most disk controller BIOS vendors do
	19	not yet implement this feature.
	20
	21	config EFI_VARS
	22	tristate "EFI Variable Support via sysfs"
	23	depends on EFI
	24	default n
	25	help
	26	If you say Y here, you are able to get EFI (Extensible Firmware
	27	Interface) variable information via sysfs. You may read,
	28	write, create, and destroy EFI variables through this interface.
	29
	30	Note that using this driver in concert with efibootmgr requires
	31	at least test release version 0.5.0-test3 or later, which is
	32	available from Matt Domsch's website located at:
	33	<http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>
	34
	35	Subsequent efibootmgr releases may be found at:
	36	<http://linux.dell.com/efibootmgr>
	37
	38	config EFI_PCDP
	39	bool "Console device selection via EFI PCDP or HCDP table"
	40	depends on ACPI && EFI && IA64
	41	default y if IA64
	42	help
	43	If your firmware supplies the PCDP table, and you want to
	44	automatically use the primary console device it describes
	45	as the Linux console, say Y here.
	46
	47	If your firmware supplies the HCDP table, and you want to
	48	use the first serial port it describes as the Linux console,
	49	say Y here. If your EFI ConOut path contains only a UART
	50	device, it will become the console automatically. Otherwise,
	51	you must specify the "console=hcdp" kernel boot argument.
	52
	53	Neither the PCDP nor the HCDP affects naming of serial devices,
	54	so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
	55	on how the driver discovers devices.
	56
	57	You must also enable the appropriate drivers (serial, VGA, etc.)
	58
	59	See <http://www.dig64.org/specifications/DIG64_HCDPv20_042804.pdf>
	60
6c54c28e AS	61	config DELL_RBU
	62	tristate "BIOS update support for DELL systems via sysfs"
	63	select FW_LOADER
	64	help
	65	Say m if you want to have the option of updating the BIOS for your
	66	DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
	67	supporting application to comunicate with the BIOS regarding the new
	68	image for the image update to take effect.
	69	See <file:Documentation/dell_rbu.txt> for more details on the driver.
1da177e4	70	endmenu