1# 2# For a description of the syntax of this configuration file, 3# see Documentation/kbuild/kconfig-language.txt. 4# 5 6menu "Firmware Drivers" 7 8config EDD 9 tristate "BIOS Enhanced Disk Drive calls determine boot disk" 10 depends on X86 11 help 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. 15 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. 19 20config EDD_OFF 21 bool "Sets default behavior for EDD detection to off" 22 depends on EDD 23 default n 24 help 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}'. 28 29config FIRMWARE_MEMMAP 30 bool "Add firmware-provided memory map to sysfs" if EXPERT 31 default X86 32 help 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. 36 37 See also Documentation/ABI/testing/sysfs-firmware-memmap. 38 39config EFI_VARS 40 tristate "EFI Variable Support via sysfs" 41 depends on EFI 42 select UCS2_STRING 43 default n 44 help 45 If you say Y here, you are able to get EFI (Extensible Firmware 46 Interface) variable information via sysfs. You may read, 47 write, create, and destroy EFI variables through this interface. 48 49 Note that using this driver in concert with efibootmgr requires 50 at least test release version 0.5.0-test3 or later, which is 51 available from Matt Domsch's website located at: 52 <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz> 53 54 Subsequent efibootmgr releases may be found at: 55 <http://linux.dell.com/efibootmgr> 56 57config EFI_VARS_PSTORE 58 bool "Register efivars backend for pstore" 59 depends on EFI_VARS && PSTORE 60 default y 61 help 62 Say Y here to enable use efivars as a backend to pstore. This 63 will allow writing console messages, crash dumps, or anything 64 else supported by pstore to EFI variables. 65 66config EFI_VARS_PSTORE_DEFAULT_DISABLE 67 bool "Disable using efivars as a pstore backend by default" 68 depends on EFI_VARS_PSTORE 69 default n 70 help 71 Saying Y here will disable the use of efivars as a storage 72 backend for pstore by default. This setting can be overridden 73 using the efivars module's pstore_disable parameter. 74 75config EFI_PCDP 76 bool "Console device selection via EFI PCDP or HCDP table" 77 depends on ACPI && EFI && IA64 78 default y if IA64 79 help 80 If your firmware supplies the PCDP table, and you want to 81 automatically use the primary console device it describes 82 as the Linux console, say Y here. 83 84 If your firmware supplies the HCDP table, and you want to 85 use the first serial port it describes as the Linux console, 86 say Y here. If your EFI ConOut path contains only a UART 87 device, it will become the console automatically. Otherwise, 88 you must specify the "console=hcdp" kernel boot argument. 89 90 Neither the PCDP nor the HCDP affects naming of serial devices, 91 so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending 92 on how the driver discovers devices. 93 94 You must also enable the appropriate drivers (serial, VGA, etc.) 95 96 See DIG64_HCDPv20_042804.pdf available from 97 <http://www.dig64.org/specifications/> 98 99config DELL_RBU 100 tristate "BIOS update support for DELL systems via sysfs" 101 depends on X86 102 select FW_LOADER 103 help 104 Say m if you want to have the option of updating the BIOS for your 105 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP) 106 supporting application to communicate with the BIOS regarding the new 107 image for the image update to take effect. 108 See <file:Documentation/dell_rbu.txt> for more details on the driver. 109 110config DCDBAS 111 tristate "Dell Systems Management Base Driver" 112 depends on X86 113 help 114 The Dell Systems Management Base Driver provides a sysfs interface 115 for systems management software to perform System Management 116 Interrupts (SMIs) and Host Control Actions (system power cycle or 117 power off after OS shutdown) on certain Dell systems. 118 119 See <file:Documentation/dcdbas.txt> for more details on the driver 120 and the Dell systems on which Dell systems management software makes 121 use of this driver. 122 123 Say Y or M here to enable the driver for use by Dell systems 124 management software such as Dell OpenManage. 125 126config DMIID 127 bool "Export DMI identification via sysfs to userspace" 128 depends on DMI 129 default y 130 help 131 Say Y here if you want to query SMBIOS/DMI system identification 132 information from userspace through /sys/class/dmi/id/ or if you want 133 DMI-based module auto-loading. 134 135config DMI_SYSFS 136 tristate "DMI table support in sysfs" 137 depends on SYSFS && DMI 138 default n 139 help 140 Say Y or M here to enable the exporting of the raw DMI table 141 data via sysfs. This is useful for consuming the data without 142 requiring any access to /dev/mem at all. Tables are found 143 under /sys/firmware/dmi when this option is enabled and 144 loaded. 145 146config ISCSI_IBFT_FIND 147 bool "iSCSI Boot Firmware Table Attributes" 148 depends on X86 149 default n 150 help 151 This option enables the kernel to find the region of memory 152 in which the ISCSI Boot Firmware Table (iBFT) resides. This 153 is necessary for iSCSI Boot Firmware Table Attributes module to work 154 properly. 155 156config ISCSI_IBFT 157 tristate "iSCSI Boot Firmware Table Attributes module" 158 select ISCSI_BOOT_SYSFS 159 depends on ISCSI_IBFT_FIND && SCSI && SCSI_LOWLEVEL 160 default n 161 help 162 This option enables support for detection and exposing of iSCSI 163 Boot Firmware Table (iBFT) via sysfs to userspace. If you wish to 164 detect iSCSI boot parameters dynamically during system boot, say Y. 165 Otherwise, say N. 166 167source "drivers/firmware/google/Kconfig" 168 169endmenu 170