If the board has a high precision mico-second timer, it maked sense to use it instead of the on-chip one --- cpu/i386/sc520/sc520_timer.c | 4 ++++ include/asm-i386/ic/sc520.h | 1 + 2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/cpu/i386/sc520/sc520_timer.c b/cpu/i386/sc520/sc520_timer.c index eca48e0..d5617e9 100644 --- a/cpu/i386/sc520/sc520_timer.c +++ b/cpu/i386/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/include/asm-i386/ic/sc520.h b/include/asm-i386/ic/sc520.h index 57c9904..20384a4 100644 --- a/include/asm-i386/ic/sc520.h +++ b/include/asm-i386/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 {