From b000513741d330947bb832a5835378e35bdfb394 Mon Sep 17 00:00:00 2001 From: Lee Leahy Date: Tue, 12 May 2015 18:19:47 -0700 Subject: 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 Reviewed-on: http://review.coreboot.org/10340 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/soc/intel/skylake/cpu_info.c | 52 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/soc/intel/skylake/cpu_info.c (limited to 'src/soc/intel/skylake/cpu_info.c') 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 +#include +#include +#include +#include +#include + +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; +} -- cgit v1.2.3