soc/intel/skylake: Use Broadwell as comparision base for Skylake SOC

Use the Broadwell implementation as the comparison base for Skylake.

BRANCH=none
BUG=None
TEST=None

Change-Id: I22eb55ea89eb0d6883f98e4c72a6d243e819e6d8
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10340
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/src/soc/intel/skylake/cpu_info.c b/src/soc/intel/skylake/cpu_info.c
new file mode 100644
index 0000000000..72667ac18f
--- /dev/null
+++ b/src/soc/intel/skylake/cpu_info.c
@@ -0,0 +1,52 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2014 Google Inc.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <cpu/cpu.h>
+#include <cpu/x86/msr.h>
+#include <soc/cpu.h>
+#include <soc/msr.h>
+#include <soc/systemagent.h>
+
+u32 cpu_family_model(void)
+{
+	return cpuid_eax(1) & 0x0fff0ff0;
+}
+
+u32 cpu_stepping(void)
+{
+	return cpuid_eax(1) & 0xf;
+}
+
+/* Dynamically determine if the part is ULT. */
+int cpu_is_ult(void)
+{
+	static int ult = -1;
+
+	if (ult < 0) {
+		u32 fm = cpu_family_model();
+		if (fm == BROADWELL_FAMILY_ULT || fm == HASWELL_FAMILY_ULT)
+			ult = 1;
+		else
+			ult = 0;
+	}
+
+	return ult;
+}