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authorTimur Tabi <timur@freescale.com>2009-08-20 17:41:11 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-08-28 17:12:43 -0500
commit05f6f66474312ad03c39b4ca4875af46c87366bf (patch)
treeffd0d906d4bfe98327b271e0dae7c4c1dfd7bc48 /cpu
parentc17b79fbd0c7923948331d65cb588734a9c681ff (diff)
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85xx: Improve MPIC initialization
The MPIC initialization code for Freescale e500 CPUs was not using I/O accessors, and it was not issuing a read-back to the MPIC after setting mixed mode. This may be the cause of a spurious interrupt on some systems. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu')
-rw-r--r--cpu/mpc85xx/interrupts.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/cpu/mpc85xx/interrupts.c b/cpu/mpc85xx/interrupts.c
index 4ef8395..409367d 100644
--- a/cpu/mpc85xx/interrupts.c
+++ b/cpu/mpc85xx/interrupts.c
@@ -31,15 +31,17 @@
#include <watchdog.h>
#include <command.h>
#include <asm/processor.h>
+#include <asm/io.h>
-int interrupt_init_cpu(unsigned long *decrementer_count)
+int interrupt_init_cpu(unsigned int *decrementer_count)
{
- volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
+ ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC85xx_PIC_ADDR;
- pic->gcr = MPC85xx_PICGCR_RST;
- while (pic->gcr & MPC85xx_PICGCR_RST)
+ out_be32(&pic->gcr, MPC85xx_PICGCR_RST);
+ while (in_be32(&pic->gcr) & MPC85xx_PICGCR_RST)
;
- pic->gcr = MPC85xx_PICGCR_M;
+ out_be32(&pic->gcr, MPC85xx_PICGCR_M);
+ in_be32(&pic->gcr);
*decrementer_count = get_tbclk() / CONFIG_SYS_HZ;