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authorJulien Viard de Galbert <jviarddegalbert@online.net>2018-03-29 14:43:37 +0200
committerPatrick Georgi <pgeorgi@google.com>2019-01-24 14:03:47 +0000
commit2f66c709f481aec055809ac30afea094f036a136 (patch)
treeb1d6d63ddc84573d9288224a3854a0fb6cf12b85
parentab1227226ebd78b40783cb200e60711b900352f0 (diff)
downloadcoreboot-2f66c709f481aec055809ac30afea094f036a136.tar.xz
soc/intel/denverton_ns: Enable Fast Strings
Change-Id: I7cee3c40299abf14a24128b1ac14f1823f87a0e1 Signed-off-by: Julien Viard de Galbert <jviarddegalbert@online.net> Reviewed-on: https://review.coreboot.org/c/25431 Reviewed-by: Vanny E <vanessa.f.eusebio@intel.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: David Guckian Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/soc/intel/denverton_ns/cpu.c6
-rw-r--r--src/soc/intel/denverton_ns/include/soc/msr.h1
2 files changed, 7 insertions, 0 deletions
diff --git a/src/soc/intel/denverton_ns/cpu.c b/src/soc/intel/denverton_ns/cpu.c
index 676fab7cbd..f954411ff2 100644
--- a/src/soc/intel/denverton_ns/cpu.c
+++ b/src/soc/intel/denverton_ns/cpu.c
@@ -2,6 +2,7 @@
* This file is part of the coreboot project.
*
* Copyright (C) 2015 - 2017 Intel Corp.
+ * Copyright (C) 2018 Online SAS
*
* 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
@@ -39,6 +40,11 @@ static void denverton_core_init(struct device *cpu)
printk(BIOS_DEBUG, "Init Denverton-NS SoC cores.\n");
+ /* Enable Fast Strings */
+ msr = rdmsr(IA32_MISC_ENABLE);
+ msr.lo |= FAST_STRINGS_ENABLE_BIT;
+ wrmsr(IA32_MISC_ENABLE, msr);
+
/* Enable Turbo */
enable_turbo();
diff --git a/src/soc/intel/denverton_ns/include/soc/msr.h b/src/soc/intel/denverton_ns/include/soc/msr.h
index 165856fd7c..825d4cfca8 100644
--- a/src/soc/intel/denverton_ns/include/soc/msr.h
+++ b/src/soc/intel/denverton_ns/include/soc/msr.h
@@ -92,6 +92,7 @@
#define PRMRR_SUPPORTED (1 << 12)
/* IA32_MISC_ENABLE bits */
+#define FAST_STRINGS_ENABLE_BIT (1 << 0)
#define SPEED_STEP_ENABLE_BIT (1 << 16)
/* Read BCLK from MSR */