From e324cc91e09662ef5edb84f8160bbfa830bc701b Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Sun, 12 Jul 2015 17:01:42 +0200 Subject: [PATCH] intel raminit: rewrite timB high adjust calculation Found while doing code review. Simplify the code by using a loop for positive and negative phase adjustments. Change-Id: I0980443d0d2815bccef969709fddecc07d61a788 Signed-off-by: Patrick Rudolph Reviewed-on: http://review.coreboot.org/10890 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Stefan Reinauer Reviewed-by: Nicolas Reinecke --- .../intel/sandybridge/raminit_native.c | 23 +++++++++---------- 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/src/northbridge/intel/sandybridge/raminit_native.c b/src/northbridge/intel/sandybridge/raminit_native.c index 0708f47730..790f47c46c 100644 --- a/src/northbridge/intel/sandybridge/raminit_native.c +++ b/src/northbridge/intel/sandybridge/raminit_native.c @@ -2288,18 +2288,17 @@ static int get_timB_high_adjust(u64 val) if (val == 0xffffffffffffffffLL) return 0; - if (val >= 0xfffffffffffff000LL) - return 3; - if (val >= 0xfffffffffff00000LL) - return -1; - if (val >= 0xfffffff000000000LL) - return -2; - if (val >= 0xfff0000000000000LL) - return -3; - - for (i = 0; i < 8; i++) - if (val >> (8 * (7 - i) + 4)) - return i; + if (val >= 0xf000000000000000LL) { + /* needs negative adjustment */ + for (i = 0; i < 8; i++) + if (val << (8 * (7 - i) + 4)) + return -i; + } else { + /* needs positive adjustment */ + for (i = 0; i < 8; i++) + if (val >> (8 * (7 - i) + 4)) + return i; + } return 8; }