[U-Boot] [PATCH 0/4] efi_loader: non-volatile variables support

[AKASHI Takahiro]

As the subject suggested, this patch set allows any efi variable to be
volatile or non-volatile as UEFI specification describes.

With my efishell patch[1] with patch #2, you can try as follows:
  => efi setvar PlatformLang en
  => efi setvar -nv BootNext =H0200
  => env save

BootNext will be preserved across reboot, while PlatformLang not.

Please note that, currently, setvar command does not automatically
append NON_VOLATILE attribute, while UEFI specification expects that
PlatformLang be non-volatile, you'd better also specify -nv for
this variable here.

Patch #2/#3 depend on my efishell patch[1].
Patch #4 depends on my BootNext patch[2].

Patch[1] and [2] have not been merged yet, so patch#1 can be applied 
on its own.

[1] https://lists.denx.de/pipermail/u-boot/2018-November/346450.html
[2] https://lists.denx.de/pipermail/u-boot/2018-November/349281.html

AKASHI Takahiro (4):
  efi_loader: support non-volatile variable behavior
  cmd: efishell: support -nv option to setvar sub-command
  cmd: efishell: make Boot####/BootOrder variable non-volatile
  efi_loader: bootmgr: make BootNext non-volatile

 cmd/efishell.c                | 20 ++++++++---
 env/env.c                     |  4 +++
 include/efi_loader.h          |  1 +
 lib/efi_loader/efi_bootmgr.c  |  3 +-
 lib/efi_loader/efi_variable.c | 64 +++++++++++++++++++++++++++++++++--
 5 files changed, 84 insertions(+), 8 deletions(-)

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2.19.1