linux-kernel - [PATCH 1/7] x86/boot: adding hw subarch ID for Moorestown

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Message-ID: <43F901BD926A4E43B106BF17856F07556A5EA871@orsmsx508.amr.corp.intel.com>
Date:	Fri, 28 Aug 2009 14:52:47 -0700
From:	"Pan, Jacob jun" <jacob.jun.pan@...el.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	LKML <linux-kernel@...r.kernel.org>, x86 team <x86@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Arjan van de Veen <arjan@...radead.org>,
	Avi Kivity <avi@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Alok N Kataria <akataria@...are.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: [PATCH 1/7] x86/boot: adding hw subarch ID for Moorestown

>From 2de4f68e7b0403bb39954d7c2e3d5097d0e6e3ac Mon Sep 17 00:00:00 2001
From: Jacob Pan <jacob.jun.pan@...el.com>
Date: Thu, 11 Jun 2009 20:34:47 -0700
Subject: [PATCH] x86/boot: adding hw subarch ID for Moorestown

x86 bootprotocol 2.07 has introduced hardware_subarch ID in the boot
parameters provided by FW. We use it to identify Moorestown platforms.

The subarchitecture ID will help select a set of platform features and
x86_quirks.

Signed-off-by: Jacob Pan <jacob.jun.pan@...el.com>
---
 Documentation/x86/boot.txt       |    1 +
 arch/x86/include/asm/bootparam.h |   11 +++++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
index 8da3a79..30b43e1 100644
--- a/Documentation/x86/boot.txt
+++ b/Documentation/x86/boot.txt
@@ -599,6 +599,7 @@ Protocol:	2.07+
   0x00000000	The default x86/PC environment
   0x00000001	lguest
   0x00000002	Xen
+  0x00000003	Moorestown MID
 
 Field name:	hardware_subarch_data
 Type:		write (subarch-dependent)
diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h
index 1724e8d..631cae9 100644
--- a/arch/x86/include/asm/bootparam.h
+++ b/arch/x86/include/asm/bootparam.h
@@ -109,4 +109,15 @@ struct boot_params {
 	__u8  _pad9[276];				/* 0xeec */
 } __attribute__((packed));
 
+#define N_X86_SUBARCHS			4
+
+enum {
+	X86_SUBARCH_PC = 0,
+	X86_SUBARCH_LGUEST,
+	X86_SUBARCH_XEN,
+	X86_SUBARCH_MRST,
+};
+
+
+
 #endif /* _ASM_X86_BOOTPARAM_H */
-- 
1.5.6.5

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