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

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

Signed-off-by: Simon Glass sjg@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; }