• Tom Gundersen's avatar
    efi: split efisubsystem from efivars · a9499fa7
    Tom Gundersen authored
    This registers /sys/firmware/efi/{,systab,efivars/} whenever EFI is enabled
    and the system is booted with EFI.
    This allows
     *) userspace to check for the existence of /sys/firmware/efi as a way
        to determine whether or it is running on an EFI system.
     *) 'mount -t efivarfs none /sys/firmware/efi/efivars' without manually
        loading any modules.
    [ Also, move the efivar API into vars.c and unconditionally compile it.
      This allows us to move efivars.c, which now only contains the sysfs
      variable code, into the firmware/efi directory. Note that the efivars.c
      filename is kept to maintain backwards compatability with the old
      efivars.ko module. With this patch it is now possible for efivarfs
      to be built without CONFIG_EFI_VARS - Matt ]
    Cc: Seiji Aguchi <seiji.aguchi@hds.com>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: Mike Waychison <mikew@google.com>
    Cc: Kay Sievers <kay@vrfy.org>
    Cc: Jeremy Kerr <jk@ozlabs.org>
    Cc: Matthew Garrett <mjg59@srcf.ucam.org>
    Cc: Chun-Yi Lee <jlee@suse.com>
    Cc: Andy Whitcroft <apw@canonical.com>
    Cc: Tobias Powalowski <tpowa@archlinux.org>
    Signed-off-by: default avatarTom Gundersen <teg@jklm.no>
    Signed-off-by: default avatarMatt Fleming <matt.fleming@intel.com>
Makefile 488 Bytes