1menu "EFI (Extensible Firmware Interface) Support" 2 depends on EFI 3 4config EFI_VARS 5 tristate "EFI Variable Support via sysfs" 6 depends on EFI 7 default n 8 help 9 If you say Y here, you are able to get EFI (Extensible Firmware 10 Interface) variable information via sysfs. You may read, 11 write, create, and destroy EFI variables through this interface. 12 13 Note that using this driver in concert with efibootmgr requires 14 at least test release version 0.5.0-test3 or later, which is 15 available from: 16 <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz> 17 18 Subsequent efibootmgr releases may be found at: 19 <http://github.com/vathpela/efibootmgr> 20 21config EFI_ESRT 22 bool 23 depends on EFI && !IA64 24 default y 25 26config EFI_VARS_PSTORE 27 tristate "Register efivars backend for pstore" 28 depends on EFI_VARS && PSTORE 29 default y 30 help 31 Say Y here to enable use efivars as a backend to pstore. This 32 will allow writing console messages, crash dumps, or anything 33 else supported by pstore to EFI variables. 34 35config EFI_VARS_PSTORE_DEFAULT_DISABLE 36 bool "Disable using efivars as a pstore backend by default" 37 depends on EFI_VARS_PSTORE 38 default n 39 help 40 Saying Y here will disable the use of efivars as a storage 41 backend for pstore by default. This setting can be overridden 42 using the efivars module's pstore_disable parameter. 43 44config EFI_RUNTIME_MAP 45 bool "Export efi runtime maps to sysfs" 46 depends on X86 && EFI && KEXEC_CORE 47 default y 48 help 49 Export efi runtime memory maps to /sys/firmware/efi/runtime-map. 50 That memory map is used for example by kexec to set up efi virtual 51 mapping the 2nd kernel, but can also be used for debugging purposes. 52 53 See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map. 54 55config EFI_FAKE_MEMMAP 56 bool "Enable EFI fake memory map" 57 depends on EFI && X86 58 default n 59 help 60 Saying Y here will enable "efi_fake_mem" boot option. 61 By specifying this parameter, you can add arbitrary attribute 62 to specific memory range by updating original (firmware provided) 63 EFI memmap. 64 This is useful for debugging of EFI memmap related feature. 65 e.g. Address Range Mirroring feature. 66 67config EFI_MAX_FAKE_MEM 68 int "maximum allowable number of ranges in efi_fake_mem boot option" 69 depends on EFI_FAKE_MEMMAP 70 range 1 128 71 default 8 72 help 73 Maximum allowable number of ranges in efi_fake_mem boot option. 74 Ranges can be set up to this value using comma-separated list. 75 The default value is 8. 76 77config EFI_PARAMS_FROM_FDT 78 bool 79 help 80 Select this config option from the architecture Kconfig if 81 the EFI runtime support gets system table address, memory 82 map address, and other parameters from the device tree. 83 84config EFI_RUNTIME_WRAPPERS 85 bool 86 87config EFI_ARMSTUB 88 bool 89 90endmenu 91 92config UEFI_CPER 93 bool 94