[OpenBIOS] [commit] r1134 - trunk/openbios-devel/arch/sparc64

[repository service]

Author: mcayland
Date: Fri May  3 23:45:00 2013
New Revision: 1134
URL: http://tracker.coreboot.org/trac/openbios/changeset/1134

Log:
SPARC64: Add trivial implementation of udelay()

The OpenBIOS IDE driver calls udelay() in order to wait for IDE transfers
to complete. Without an implementation of udelay(), the IDE timeout is too
low causing sporadic errors during periods of high I/O activity. As reported
by Artyom Tarasenko.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>

Modified:
   trunk/openbios-devel/arch/sparc64/openbios.c

Modified: trunk/openbios-devel/arch/sparc64/openbios.c
==============================================================================
--- trunk/openbios-devel/arch/sparc64/openbios.c	Sat Apr 27 13:42:18 2013	(r1133)
+++ trunk/openbios-devel/arch/sparc64/openbios.c	Fri May  3 23:45:00 2013	(r1134)
@@ -547,6 +547,9 @@
 
 void udelay(unsigned int usecs)
 {
+    volatile int i;
+
+    for (i = 0; i < usecs * 100; i++);
 }
 
 static void init_memory(void)