linux-kernel - [PATCH 0/2] EFI facilities

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Date:	Mon, 21 Jan 2013 20:40:36 +0000
From:	Matt Fleming <matt@...sole-pimps.org>
To:	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org
Cc:	Tim Gardner <rtg.canonical@...il.com>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	"H. Peter Anvin" <hpa@...or.com>, Olof Johansson <olof@...om.net>,
	Tony Luck <tony.luck@...el.com>,
	Steve Langasek <steve.langasek@...onical.com>,
	Colin Ian King <colin.king@...onical.com>,
	Matt Fleming <matt.fleming@...el.com>
Subject: [PATCH 0/2] EFI facilities

From: Matt Fleming <matt.fleming@...el.com>

Various users expect different semantics from 'efi_enabled', and one
variable can't be all things to all users. Introduce EFI facilities,
which informs users what EFI initialisation steps were completed
successfully (are the system/config tables mapped, can we invoke
runtime services, etc?) and allows users to clearly document which
pieces of EFI firmware functionality they're using.

The immediate motivation for this patch series is the bug report at,

    https://bugzilla.kernel.org/show_bug.cgi?id=47121

Drivers need a new means of detecting whether they're running on an
EFI machine, as sadly the expression,

    if (!efi_enabled)

hasn't been a sufficient condition for quite some time.

Matt Fleming (2):
  efi: Make 'efi_enabled' a function to query EFI facilities
  samsung-laptop: Disable on EFI hardware

 arch/x86/include/asm/efi.h             |  1 +
 arch/x86/kernel/reboot.c               |  2 +-
 arch/x86/kernel/setup.c                | 28 ++++++++---------
 arch/x86/platform/efi/efi.c            | 56 ++++++++++++++++++++--------------
 drivers/acpi/osl.c                     |  2 +-
 drivers/firmware/dmi_scan.c            |  2 +-
 drivers/firmware/efivars.c             |  4 +--
 drivers/firmware/iscsi_ibft_find.c     |  2 +-
 drivers/gpu/drm/radeon/radeon_device.c |  3 +-
 drivers/platform/x86/ibm_rtl.c         |  2 +-
 drivers/platform/x86/samsung-laptop.c  |  3 ++
 drivers/scsi/isci/init.c               |  2 +-
 include/linux/efi.h                    | 24 +++++++++++----
 init/main.c                            |  4 +--
 14 files changed, 81 insertions(+), 54 deletions(-)

-- 
1.7.11.7

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