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kernel/linux-imx6_3.14.28/Documentation/filesystems/efivarfs.txt 612 Bytes
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  efivarfs - a (U)EFI variable filesystem
  
  The efivarfs filesystem was created to address the shortcomings of
  using entries in sysfs to maintain EFI variables. The old sysfs EFI
  variables code only supported variables of up to 1024 bytes. This
  limitation existed in version 0.99 of the EFI specification, but was
  removed before any full releases. Since variables can now be larger
  than a single page, sysfs isn't the best interface for this.
  
  Variables can be created, deleted and modified with the efivarfs
  filesystem.
  
  efivarfs is typically mounted like this,
  
  	mount -t efivarfs none /sys/firmware/efi/efivars