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authorwdenk <wdenk>2004-03-23 20:18:25 +0000
committerwdenk <wdenk>2004-03-23 20:18:25 +0000
commitefa329cb892c8b9a5e453638b3ca57c94b71e9a2 (patch)
treeb8c5361b7054e21662e619100c1a7f53e6d8de0a /cpu/arm920t/interrupts.c
parent7d7ce4125f769a21a321c3df972272c5854d54f7 (diff)
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* Add start-up delay to make sure power has stabilized before
attempting to switch on USB on SX1 board. * Patch by Josef Wagner, 18 Mar 2004: - Add support for MicroSys XM250 board (PXA255) - Add support for MicroSys PM828 board (MPC8280) - Add support for 32 MB Flash on PM825/826 - new SDRAM refresh rate for PM825/PM826 - added support for MicroSys PM520 (MPC5200) - replaced Query by Identify command in CPU86/flash.c to support 28F160F3B * Fix wrap around problem with udelay() on ARM920T * Add support for Macronix flash on TRAB board
Diffstat (limited to 'cpu/arm920t/interrupts.c')
-rw-r--r--cpu/arm920t/interrupts.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/cpu/arm920t/interrupts.c b/cpu/arm920t/interrupts.c
index 9ff06c1..521c4f4 100644
--- a/cpu/arm920t/interrupts.c
+++ b/cpu/arm920t/interrupts.c
@@ -235,14 +235,13 @@ void set_timer (ulong t)
void udelay (unsigned long usec)
{
ulong tmo;
+ ulong start = get_timer(0);
tmo = usec / 1000;
tmo *= (timer_load_val * 100);
tmo /= 1000;
- tmo += get_timer (0);
-
- while (get_timer_masked () < tmo)
+ while ((ulong)(get_timer_masked () - start) < tmo)
/*NOP*/;
}