From: Graeme Russ <graeme.russ@gmail.com>
Date: Fri, 23 Apr 2010 14:05:50 +0000 (+1000)
Subject: sc520: Allow boards to override udelay
X-Git-Tag: v2010.06-rc1~45
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=5204566e53a3c519e8795480d056635bc64b11cd;p=u-boot

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 <graeme.russ@gmail.com>
---

diff --git a/arch/i386/cpu/sc520/sc520_timer.c b/arch/i386/cpu/sc520/sc520_timer.c
index eca48e0c12..d5617e91f6 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 57c9904422..20384a4a8c 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 {