From 5204566e53a3c519e8795480d056635bc64b11cd Mon Sep 17 00:00:00 2001 From: Graeme Russ Date: Sat, 24 Apr 2010 00:05:50 +1000 Subject: [PATCH] sc520: Allow boards to override udelay If the board has a high precision mico-second timer, it maked sense to use it instead of the on-chip one Signed-off-by: Graeme Russ --- arch/i386/cpu/sc520/sc520_timer.c | 4 ++++ arch/i386/include/asm/ic/sc520.h | 1 + 2 files changed, 5 insertions(+) diff --git a/arch/i386/cpu/sc520/sc520_timer.c b/arch/i386/cpu/sc520/sc520_timer.c index eca48e0..d5617e9 100644 --- a/arch/i386/cpu/sc520/sc520_timer.c +++ b/arch/i386/cpu/sc520/sc520_timer.c @@ -69,7 +69,11 @@ int timer_init(void) return 0; } +/* Allow boards to override udelay implementation */ void __udelay(unsigned long usec) + __attribute__((weak, alias("sc520_udelay"))); + +void sc520_udelay(unsigned long usec) { int m = 0; long u; diff --git a/arch/i386/include/asm/ic/sc520.h b/arch/i386/include/asm/ic/sc520.h index 57c9904..20384a4 100644 --- a/arch/i386/include/asm/ic/sc520.h +++ b/arch/i386/include/asm/ic/sc520.h @@ -28,6 +28,7 @@ void init_sc520(void); unsigned long init_sc520_dram(void); +void sc520_udelay(unsigned long usec); /* Memory mapped configuration registers */ typedef struct sc520_mmcr { -- 2.7.4