[tip:x86/microcode] x86/Kconfig: Make early microcode loading a configuration feature

[tip-bot for Fenghua Yu <fenghua.yu@intel.com>]

Commit-ID:  da76f64e7eb28b718501d15c1b79af560b7ca4ea
Gitweb:     http://git.kernel.org/tip/da76f64e7eb28b718501d15c1b79af560b7ca4ea
Author:     Fenghua Yu <fenghua.yu@intel.com>
AuthorDate: Thu, 20 Dec 2012 23:44:32 -0800
Committer:  H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Thu, 31 Jan 2013 13:20:42 -0800

x86/Kconfig: Make early microcode loading a configuration feature

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@intel.com>
Link: http://lkml.kernel.org/r/1356075872-3054-13-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
 arch/x86/Kconfig | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 79795af..e243da7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1029,6 +1029,24 @@ config MICROCODE_OLD_INTERFACE
 	def_bool y
 	depends on MICROCODE
 
+config MICROCODE_INTEL_LIB
+	def_bool y
+	depends on MICROCODE_INTEL
+
+config MICROCODE_INTEL_EARLY
+	bool "Early load microcode"
+	depends on MICROCODE_INTEL && BLK_DEV_INITRD
+	default y
+	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 MICROCODE_EARLY
+	def_bool y
+	depends on MICROCODE_INTEL_EARLY
+
 config X86_MSR
 	tristate "/dev/cpu/*/msr - Model-specific register support"
 	---help---