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authorRonald G. Minnich <rminnich@gmail.com>2012-11-27 11:32:38 -0800
committerRonald G. Minnich <rminnich@gmail.com>2012-11-28 07:57:17 +0100
commit5079a0d32f2824445cf593dfbcb65598eaa97dee (patch)
tree2e6edd336c00f1f3e4937410a9be9537553702be /src/cpu/amd
parentacf443191bd035c26ee89c3ca56f065a5111901b (diff)
Remove assembly coded log2 function
As we move to supporting other systems we need to get rid of assembly where we can. The log2 function in src/lib is identical to the assembly one (tested for all 32-bit signed integers :-) and takes about 10 ns to run as opposed to 5ns for the non-portable assembly version. While speed is good, I think we can spare the 15 ns or so we add to boot time by using the C version only. Change-Id: Icafa565eae282c85fa5fc01b3bd1f110cd9aaa91 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/1928 Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/amd')
-rw-r--r--src/cpu/amd/geode_gx2/cpubug.c1
-rw-r--r--src/cpu/amd/geode_lx/cpubug.c1
-rw-r--r--src/cpu/amd/sc520/sc520.c1
3 files changed, 0 insertions, 3 deletions
diff --git a/src/cpu/amd/geode_gx2/cpubug.c b/src/cpu/amd/geode_gx2/cpubug.c
index 473766c8a4..54d7e0e8d2 100644
--- a/src/cpu/amd/geode_gx2/cpubug.c
+++ b/src/cpu/amd/geode_gx2/cpubug.c
@@ -6,7 +6,6 @@
#include <device/pci_ids.h>
#include <stdlib.h>
#include <string.h>
-#include <bitops.h>
#include <cpu/amd/gx2def.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/cache.h>
diff --git a/src/cpu/amd/geode_lx/cpubug.c b/src/cpu/amd/geode_lx/cpubug.c
index e3b6e511ee..5b1a7ace04 100644
--- a/src/cpu/amd/geode_lx/cpubug.c
+++ b/src/cpu/amd/geode_lx/cpubug.c
@@ -26,7 +26,6 @@
#include <device/device.h>
#include <stdlib.h>
#include <string.h>
-#include <bitops.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/lxdef.h>
diff --git a/src/cpu/amd/sc520/sc520.c b/src/cpu/amd/sc520/sc520.c
index 382eb877ba..6954f4425e 100644
--- a/src/cpu/amd/sc520/sc520.c
+++ b/src/cpu/amd/sc520/sc520.c
@@ -12,7 +12,6 @@
#include <device/hypertransport.h>
#include <stdlib.h>
#include <string.h>
-#include <bitops.h>
#include <delay.h>
/*