From db55bd7dad9a2c30c8da884bf20273945e240430 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Thu, 1 Jan 2015 16:18:11 -0700
Subject: [PATCH] x86: Commit the current MTRRs before relocation
Once we stop running from ROM we should set up the MTTRs to speed up
execution. This is only needed for platforms that don't have an FSP.
Also in the Coreboot case, the MTRRs are set up for us.
Signed-off-by: Simon Glass <sjg@chromium.org>
---
arch/x86/lib/init_helpers.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/x86/lib/init_helpers.c b/arch/x86/lib/init_helpers.c
index be4eb12c53..fc211d9d5c 100644
--- a/arch/x86/lib/init_helpers.c
+++ b/arch/x86/lib/init_helpers.c
@@ -7,6 +7,7 @@
#include <common.h>
#include <fdtdec.h>
#include <spi.h>
+#include <asm/mtrr.h>
#include <asm/sections.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -66,6 +67,13 @@ int calculate_relocation_address(void)
int init_cache_f_r(void)
{
+#if defined(CONFIG_X86_RESET_VECTOR) & !defined(CONFIG_HAVE_FSP)
+ int ret;
+
+ ret = mtrr_commit(false);
+ if (ret)
+ return ret;
+#endif
/* Initialise the CPU cache(s) */
return init_cache();
}
--
2.39.5