2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 menu "Firmware Drivers"
9 tristate "BIOS Enhanced Disk Drive calls determine boot disk"
12 Say Y or M here if you want to enable BIOS Enhanced Disk Drive
13 Services real mode BIOS calls to determine which disk
14 BIOS tries boot from. This information is then exported via sysfs.
16 This option is experimental and is known to fail to boot on some
17 obscure configurations. Most disk controller BIOS vendors do
18 not yet implement this feature.
21 bool "Sets default behavior for EDD detection to off"
25 Say Y if you want EDD disabled by default, even though it is compiled into the
26 kernel. Say N if you want EDD enabled by default. EDD can be dynamically set
27 using the kernel parameter 'edd={on|skipmbr|off}'.
29 config FIRMWARE_MEMMAP
30 bool "Add firmware-provided memory map to sysfs" if EXPERT
33 Add the firmware-provided (unmodified) memory map to /sys/firmware/memmap.
34 That memory map is used for example by kexec to set up parameter area
35 for the next kernel, but can also be used for debugging purposes.
37 See also Documentation/ABI/testing/sysfs-firmware-memmap.
40 bool "Console device selection via EFI PCDP or HCDP table"
41 depends on ACPI && EFI && IA64
44 If your firmware supplies the PCDP table, and you want to
45 automatically use the primary console device it describes
46 as the Linux console, say Y here.
48 If your firmware supplies the HCDP table, and you want to
49 use the first serial port it describes as the Linux console,
50 say Y here. If your EFI ConOut path contains only a UART
51 device, it will become the console automatically. Otherwise,
52 you must specify the "console=hcdp" kernel boot argument.
54 Neither the PCDP nor the HCDP affects naming of serial devices,
55 so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
56 on how the driver discovers devices.
58 You must also enable the appropriate drivers (serial, VGA, etc.)
60 See DIG64_HCDPv20_042804.pdf available from
61 <http://www.dig64.org/specifications/>
64 tristate "BIOS update support for DELL systems via sysfs"
67 select FW_LOADER_USER_HELPER
69 Say m if you want to have the option of updating the BIOS for your
70 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
71 supporting application to communicate with the BIOS regarding the new
72 image for the image update to take effect.
73 See <file:Documentation/dell_rbu.txt> for more details on the driver.
76 tristate "Dell Systems Management Base Driver"
79 The Dell Systems Management Base Driver provides a sysfs interface
80 for systems management software to perform System Management
81 Interrupts (SMIs) and Host Control Actions (system power cycle or
82 power off after OS shutdown) on certain Dell systems.
84 See <file:Documentation/dcdbas.txt> for more details on the driver
85 and the Dell systems on which Dell systems management software makes
88 Say Y or M here to enable the driver for use by Dell systems
89 management software such as Dell OpenManage.
92 bool "Export DMI identification via sysfs to userspace"
96 Say Y here if you want to query SMBIOS/DMI system identification
97 information from userspace through /sys/class/dmi/id/ or if you want
98 DMI-based module auto-loading.
101 tristate "DMI table support in sysfs"
102 depends on SYSFS && DMI
105 Say Y or M here to enable the exporting of the raw DMI table
106 data via sysfs. This is useful for consuming the data without
107 requiring any access to /dev/mem at all. Tables are found
108 under /sys/firmware/dmi when this option is enabled and
111 config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
114 config ISCSI_IBFT_FIND
115 bool "iSCSI Boot Firmware Table Attributes"
116 depends on X86 && ACPI
119 This option enables the kernel to find the region of memory
120 in which the ISCSI Boot Firmware Table (iBFT) resides. This
121 is necessary for iSCSI Boot Firmware Table Attributes module to work
125 tristate "iSCSI Boot Firmware Table Attributes module"
126 select ISCSI_BOOT_SYSFS
127 depends on ISCSI_IBFT_FIND && SCSI && SCSI_LOWLEVEL
130 This option enables support for detection and exposing of iSCSI
131 Boot Firmware Table (iBFT) via sysfs to userspace. If you wish to
132 detect iSCSI boot parameters dynamically during system boot, say Y.
135 source "drivers/firmware/google/Kconfig"
136 source "drivers/firmware/efi/Kconfig"