intel/sandybridge: Don't hardcode platform type

* Add a function to return CPU platform ID bits
* Add a function to return platform type
** Platform id is 4 on Lenovo T430 (mobile)
** Platform id is 1 on HP8200 (desktop)
* Use introduced method to handle platform specific code
* Use enum for platform type
* Report platform ID

Change-Id: Ifbfc64c8cec98782d6efc987a4d4d5aeab1402ba
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/22530
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/cpu/intel/model_206ax/common.c b/src/cpu/intel/model_206ax/common.c
new file mode 100644
index 0000000000..9775efb30d
--- /dev/null
+++ b/src/cpu/intel/model_206ax/common.c
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 coresystems GmbH
+ * Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <types.h>
+#include <cpu/x86/msr.h>
+#include "model_206ax.h"
+
+#define IA32_PLATFORM_ID		0x17
+
+int get_platform_id(void)
+{
+	msr_t msr;
+
+	msr = rdmsr(IA32_PLATFORM_ID);
+	/* Read Platform Id Bits 52:50 */
+	return (msr.hi >> 18) & 0x7;
+}