diff options
Diffstat (limited to 'src/northbridge/intel')
-rw-r--r-- | src/northbridge/intel/gm45/delay.c | 12 | ||||
-rw-r--r-- | src/northbridge/intel/i945/udelay.c | 12 | ||||
-rw-r--r-- | src/northbridge/intel/sandybridge/udelay.c | 13 |
3 files changed, 0 insertions, 37 deletions
diff --git a/src/northbridge/intel/gm45/delay.c b/src/northbridge/intel/gm45/delay.c index 9f49c6ed1b..a861e250c2 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 780c73050e..3d5d6c6d9c 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 01d7abd74c..449b0b99a8 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; |