linux-kernel - [PATCH 11/11] x86/Kconfig: Configurations to enable/disable the feature

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Message-Id: <1345277729-8399-12-git-send-email-fenghua.yu@intel.com>
Date:	Sat, 18 Aug 2012 01:15:29 -0700
From:	"Fenghua Yu" <fenghua.yu@...el.com>
To:	"H Peter Anvin" <hpa@...or.com>, "Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Asit K Mallick" <asit.k.mallick@...el.com>,
	"Tigran Aivazian" <tigran@...azian.fsnet.co.uk>,
	"Andreas Herrmann" <andreas.herrmann3@....com>,
	"Borislav Petkov" <borislav.petkov@....com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"x86" <x86@...nel.org>
Cc:	"Fenghua Yu" <fenghua.yu@...el.com>
Subject: [PATCH 11/11] x86/Kconfig: Configurations to enable/disable the feature

From: Fenghua Yu <fenghua.yu@...el.com>

MICROCODE_INTEL_LIB, MICROCODE_INTEL_EARLY, and MICROCODE_EARLY are three new
configurations to enable or disable the feature.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
---
 arch/x86/Kconfig |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 50c660d..32caa77 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1035,6 +1035,7 @@ config MICROCODE_INTEL
 	depends on MICROCODE
 	default MICROCODE
 	select FW_LOADER
+	select MICROCODE_INTEL_LIB
 	---help---
 	  This options enables microcode patch loading support for Intel
 	  processors.
@@ -1055,6 +1056,27 @@ config MICROCODE_OLD_INTERFACE
 	def_bool y
 	depends on MICROCODE
 
+config MICROCODE_EARLY
+	def_bool y
+	depends on MICROCODE_INTEL_EARLY
+
+config MICROCODE_INTEL_LIB
+	def_bool y
+	depends on MICROCODE_INTEL_EARLY
+
+config MICROCODE_INTEL_EARLY
+	bool "Early load microcode"
+	depends on MICROCODE_INTEL && BLK_DEV_INITRD
+	default y
+	select FW_LOADER
+	select MICROCODE_EARLY
+	select MICROCODE_INTEL_LIB
+	help
+	  This option provides functionality to read additional microcode data
+	  at the beginning of initrd image. The data tells kernel to load
+	  microcode to CPU's as early as possible. No functional change if no
+	  microcode data is glued to the initrd, therefore it's safe to say Y.
+
 config X86_MSR
 	tristate "/dev/cpu/*/msr - Model-specific register support"
 	---help---
-- 
1.7.2

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