From 04ff9ab158714d43cdf2f4f6f0235c3ea9d241a2 Mon Sep 17 00:00:00 2001 From: Graeme Russ Date: Sun, 23 Aug 2009 12:59:49 +1000 Subject: [PATCH] Fix sc520 timer interrupt generation The current implementation has the timer being started before the interrupt handler is installed. It the interrupt occurs before the handler is installed, the timer interrupt is never reset and the timer stops Signed-off-by: Graeme Russ --- cpu/i386/sc520/sc520_timer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/cpu/i386/sc520/sc520_timer.c b/cpu/i386/sc520/sc520_timer.c index 2cb8656..2a3425b 100644 --- a/cpu/i386/sc520/sc520_timer.c +++ b/cpu/i386/sc520/sc520_timer.c @@ -54,9 +54,6 @@ int timer_init(void) write_mmcr_word (SC520_GPTMR1MAXCMPA, 100); write_mmcr_word (SC520_GPTMR1CTL, 0xe009); - /* Clear the GP Timers status register */ - write_mmcr_byte (SC520_GPTMRSTA, 0x07); - /* Register the SC520 specific timer interrupt handler */ register_timer_isr (sc520_timer_isr); @@ -64,6 +61,9 @@ int timer_init(void) irq_install_handler (0, timer_isr, NULL); unmask_irq (0); + /* Clear the GP Timer 1 status register to get the show rolling*/ + write_mmcr_byte (SC520_GPTMRSTA, 0x02); + return 0; } -- 2.7.4