[U-Boot] [PATCH 089/126] x86: Set up the MTRR for SDRAM

[Simon Glass]

Set up MTRRs for the FST SDRAM regions to improve performance.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/x86/lib/fsp/fsp_dram.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/lib/fsp/fsp_dram.c b/arch/x86/lib/fsp/fsp_dram.c
index 9161af65b98..4a87516f422 100644
--- a/arch/x86/lib/fsp/fsp_dram.c
+++ b/arch/x86/lib/fsp/fsp_dram.c
@@ -8,6 +8,7 @@
 #include <asm/fsp/fsp_support.h>
 #include <asm/e820.h>
 #include <asm/mrccache.h>
+#include <asm/mtrr.h>
 #include <asm/post.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -70,6 +71,8 @@ int dram_init_banksize(void)
 	gd->bd->bi_dram[0].start = 0;
 	gd->bd->bi_dram[0].size = low_end;
 
+	mtrr_add_request(MTRR_TYPE_WRBACK, 0, low_end);
+
 	return 0;
 }
 
-- 
2.23.0.444.g18eeb5a265-goog