[coreboot-gerrit] Patch set updated for coreboot: c3eab9c Clean up usage of multiply_to_tsc

[Nico Huber (nico.huber@secunet.com)]

Nico Huber (nico.huber at secunet.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3242

-gerrit

commit c3eab9c9dea878409c265ce6d64f7d7611d87729
Author: Paul Menzel <paulepanter at users.sourceforge.net>
Date:   Wed May 8 17:08:55 2013 +0200

    Clean up usage of multiply_to_tsc
    
    multiply_to_tsc was being copied everywhere, which is bad
    practice. Put it in the tsc.h include file where it belongs.
    Delete the copies of it.
    
    Per secunet, no copyright notice is needed.
    
    This might be a good time to get a copyright notice into tsc.h anyway.
    
    Change-Id: Ied0013ad4b1a9e5e2b330614bb867fd806f9a407
    Signed-off-by: Paul Menzel <paulepanter at users.sourceforge.net>
    Signed-off-by: Ronald G. Minnich <rminnich at gmail.com>
---
 src/include/cpu/x86/tsc.h                  | 13 +++++++++++++
 src/northbridge/intel/gm45/delay.c         | 12 ------------
 src/northbridge/intel/i945/udelay.c        | 12 ------------
 src/northbridge/intel/sandybridge/udelay.c | 13 -------------
 4 files changed, 13 insertions(+), 37 deletions(-)

diff --git a/src/include/cpu/x86/tsc.h b/src/include/cpu/x86/tsc.h
index 8e49a66..66451ad 100644
--- a/src/include/cpu/x86/tsc.h
+++ b/src/include/cpu/x86/tsc.h
@@ -27,6 +27,19 @@ static inline tsc_t rdtsc(void)
 }
 
 #if !defined(__ROMCC__)
+/* Simple 32- to 64-bit multiplication. Uses 16-bit words to avoid overflow.
+ * This code is used to prevent use of libgcc's umoddi3.
+ */
+static inline void multiply_to_tsc(tsc_t *const tsc, const u32 a, const u32 b)
+{
+	tsc->lo = (a & 0xffff) * (b & 0xffff);
+	tsc->hi = ((tsc->lo >> 16)
+		+ ((a & 0xffff) * (b >> 16))
+		+ ((b & 0xffff) * (a >> 16)));
+	tsc->lo = ((tsc->hi & 0xffff) << 16) | (tsc->lo & 0xffff);
+	tsc->hi = ((a >> 16) * (b >> 16)) + (tsc->hi >> 16);
+}
+
 /* Too many registers for ROMCC */
 static inline unsigned long long rdtscll(void)
 {
diff --git a/src/northbridge/intel/gm45/delay.c b/src/northbridge/intel/gm45/delay.c
index 9f49c6e..a861e25 100644
--- a/src/northbridge/intel/gm45/delay.c
+++ b/src/northbridge/intel/gm45/delay.c
@@ -2,7 +2,6 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2007-2008 coresystems GmbH
- *               2012 secunet Security Networks AG
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,17 +23,6 @@
 #include <cpu/intel/speedstep.h>
 #include "delay.h"
 
-/* Simple 32- to 64-bit multiplication. Uses 16-bit words to avoid overflow. */
-static inline void multiply_to_tsc(tsc_t *const tsc, const u32 a, const u32 b)
-{
-	tsc->lo = (a & 0xffff) * (b & 0xffff);
-	tsc->hi = ((tsc->lo >> 16)
-		   + ((a & 0xffff) * (b >> 16))
-		   + ((b & 0xffff) * (a >> 16)));
-	tsc->lo = ((tsc->hi & 0xffff) << 16) | (tsc->lo & 0xffff);
-	tsc->hi = ((a >> 16) * (b >> 16)) + (tsc->hi >> 16);
-}
-
 /**
  * Intel Core(tm) cpus always run the TSC at the maximum possible CPU clock
  */
diff --git a/src/northbridge/intel/i945/udelay.c b/src/northbridge/intel/i945/udelay.c
index 780c730..3d5d6c6 100644
--- a/src/northbridge/intel/i945/udelay.c
+++ b/src/northbridge/intel/i945/udelay.c
@@ -2,7 +2,6 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2007-2008 coresystems GmbH
- *               2012 secunet Security Networks AG
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,17 +23,6 @@
 #include <cpu/x86/msr.h>
 #include <cpu/intel/speedstep.h>
 
-/* Simple 32- to 64-bit multiplication. Uses 16-bit words to avoid overflow. */
-static inline void multiply_to_tsc(tsc_t *const tsc, const u32 a, const u32 b)
-{
-	tsc->lo = (a & 0xffff) * (b & 0xffff);
-	tsc->hi = ((tsc->lo >> 16)
-		   + ((a & 0xffff) * (b >> 16))
-		   + ((b & 0xffff) * (a >> 16)));
-	tsc->lo = ((tsc->hi & 0xffff) << 16) | (tsc->lo & 0xffff);
-	tsc->hi = ((a >> 16) * (b >> 16)) + (tsc->hi >> 16);
-}
-
 /**
  * Intel Core(tm) cpus always run the TSC at the maximum possible CPU clock
  */
diff --git a/src/northbridge/intel/sandybridge/udelay.c b/src/northbridge/intel/sandybridge/udelay.c
index 3edd69d..a2ce0d8 100644
--- a/src/northbridge/intel/sandybridge/udelay.c
+++ b/src/northbridge/intel/sandybridge/udelay.c
@@ -26,19 +26,6 @@
  * Intel SandyBridge/IvyBridge CPUs always run the TSC at BCLK=100MHz
  */
 
-/* Simple 32- to 64-bit multiplication. Uses 16-bit words to avoid overflow.
- * This code is used to prevent use of libgcc's umoddi3.
- */
-static inline void multiply_to_tsc(tsc_t *const tsc, const u32 a, const u32 b)
-{
-	tsc->lo = (a & 0xffff) * (b & 0xffff);
-	tsc->hi = ((tsc->lo >> 16)
-		+ ((a & 0xffff) * (b >> 16))
-		+ ((b & 0xffff) * (a >> 16)));
-	tsc->lo = ((tsc->hi & 0xffff) << 16) | (tsc->lo & 0xffff);
-	tsc->hi = ((a >> 16) * (b >> 16)) + (tsc->hi >> 16);
-}
-
 void udelay(u32 us)
 {
 	u32 dword;