CONFIG_EFI_VARS: EFI Variable Support via sysfs

General informations

The Linux kernel configuration item CONFIG_EFI_VARS has multiple definitions:

EFI Variable Support via sysfs found in drivers/firmware/efi/Kconfig

The configuration item CONFIG_EFI_VARS:

• prompt: EFI Variable Support via sysfs
• type: tristate
• depends on: CONFIG_EFI && ( CONFIG_X86 || CONFIG_IA64 )
• defined in drivers/firmware/efi/Kconfig
• found in Linux kernels: 3.10–3.19, 4.0–4.20, 5.0–5.19, 5.19+HEAD
• modules built: efivars, efivars, efivars

Help text

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 this driver is only retained for compatibility with legacy users: new users should use the efivarfs filesystem instead.

EFI Variable Support via sysfs found in drivers/firmware/Kconfig

The configuration item CONFIG_EFI_VARS:

• prompt: EFI Variable Support via sysfs
• type: tristate
• depends on: CONFIG_EFI
• defined in drivers/firmware/Kconfig
• found in Linux kernels: 2.6.6–2.6.39, 3.0–3.9
• modules built: efivars, efivars, efivars

Help text

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

/proc/efi/vars support found in arch/ia64/Kconfig

The configuration item CONFIG_EFI_VARS:

• prompt: /proc/efi/vars support
• type: tristate
• depends on: (none)
• defined in arch/ia64/Kconfig
• found in Linux kernels: 2.5.45–2.5.75, 2.6.0–2.6.5
• modules built: efivars, efivars, efivars

Help text

If you say Y here, you are able to get EFI (Extensible Firmware Interface) variable information in /proc/efi/vars. You may read, write, create, and destroy EFI variables through this interface.

To use this option, you have to check that the "/proc file system support" (PROC_FS) is enabled, too.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb fs "efivarfs" : CONFIG_EFI_VARS : drivers/firmware/efivars.c # in 3.8–3.9
• lkddb module efivars CONFIG_EFI_VARS : arch/ia64/Kconfig : "/proc/efi/vars support" # in 2.5.45–2.5.75, 2.6.0–2.6.5
• lkddb module efivars CONFIG_EFI_VARS : drivers/firmware/Kconfig : "EFI Variable Support via sysfs" # in 2.6.6–2.6.39, 3.0–3.9
• lkddb module efivars CONFIG_EFI_VARS : drivers/firmware/efi/Kconfig : "EFI Variable Support via sysfs" # in 3.10–3.19, 4.0–4.20, 5.0–5.19, 5.19+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

Automatic links from Google (and ads)

Custom Search

Popular queries: