summaryrefslogtreecommitdiff
path: root/cpu/mpc85xx/interrupts.c
diff options
context:
space:
mode:
authorKumar Gala <galak@kernel.crashing.org>2008-08-19 14:46:36 -0500
committerKumar Gala <galak@kernel.crashing.org>2008-08-27 11:44:10 -0500
commit9cff4448a9cb882defe6c8bde73b77fc0c636799 (patch)
tree3c957e027d7d33dba12333910b0484128a30be6c /cpu/mpc85xx/interrupts.c
parent9490a7f1a9484617bad75c60807ce02c8a3a6d56 (diff)
downloadu-boot-imx-9cff4448a9cb882defe6c8bde73b77fc0c636799.zip
u-boot-imx-9cff4448a9cb882defe6c8bde73b77fc0c636799.tar.gz
u-boot-imx-9cff4448a9cb882defe6c8bde73b77fc0c636799.tar.bz2
mpc85xx: remove redudant code with lib_ppc/interrupts.c
For some reason we duplicated the majority of code in lib_ppc/interrupts.c not show how that happened, but there is no good reason for it. Use the interrupt_init_cpu() and timer_interrupt_cpu() since its why they exist. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu/mpc85xx/interrupts.c')
-rw-r--r--cpu/mpc85xx/interrupts.c109
1 files changed, 12 insertions, 97 deletions
diff --git a/cpu/mpc85xx/interrupts.c b/cpu/mpc85xx/interrupts.c
index 4fe1fac..06d4d8b 100644
--- a/cpu/mpc85xx/interrupts.c
+++ b/cpu/mpc85xx/interrupts.c
@@ -31,64 +31,20 @@
#include <watchdog.h>
#include <command.h>
#include <asm/processor.h>
-#include <ppc_asm.tmpl>
-unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
-
-static __inline__ unsigned long get_msr(void)
-{
- unsigned long msr;
-
- asm volatile("mfmsr %0" : "=r" (msr) :);
- return msr;
-}
-
-static __inline__ void set_msr(unsigned long msr)
-{
- asm volatile("mtmsr %0" : : "r" (msr));
- asm volatile("isync");
-}
-
-static __inline__ unsigned long get_dec (void)
-{
- unsigned long val;
-
- asm volatile ("mfdec %0":"=r" (val):);
-
- return val;
-}
-
-
-static __inline__ void set_dec (unsigned long val)
-{
- if (val)
- asm volatile ("mtdec %0"::"r" (val));
-}
-
-void enable_interrupts (void)
-{
- set_msr (get_msr() | MSR_EE);
-}
-
-/* returns flag if MSR_EE was set before */
-int disable_interrupts (void)
-{
- ulong msr = get_msr();
- set_msr (msr & ~MSR_EE);
- return ((msr & MSR_EE) != 0);
-}
-
-int interrupt_init (void)
+int interrupt_init_cpu(unsigned long *decrementer_count)
{
volatile ccsr_pic_t *pic = (void *)(CFG_MPC85xx_PIC_ADDR);
pic->gcr = MPC85xx_PICGCR_RST;
- while (pic->gcr & MPC85xx_PICGCR_RST);
+ while (pic->gcr & MPC85xx_PICGCR_RST)
+ ;
pic->gcr = MPC85xx_PICGCR_M;
- decrementer_count = get_tbclk() / CFG_HZ;
+
+ *decrementer_count = get_tbclk() / CFG_HZ;
+
+ /* PIE is same as DIE, dec interrupt enable */
mtspr(SPRN_TCR, TCR_PIE);
- set_dec (decrementer_count);
- set_msr (get_msr () | MSR_EE);
#ifdef CONFIG_INTERRUPTS
pic->iivpr1 = 0x810001; /* 50220 enable ecm interrupts */
@@ -123,9 +79,7 @@ int interrupt_init (void)
return (0);
}
-/*
- * Install and free a interrupt handler. Not implemented yet.
- */
+/* Install and free a interrupt handler. Not implemented yet. */
void
irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
@@ -139,55 +93,16 @@ irq_free_handler(int vec)
return;
}
-/****************************************************************************/
-
-
-volatile ulong timestamp = 0;
-
-/*
- * timer_interrupt - gets called when the decrementer overflows,
- * with interrupts disabled.
- * Trivial implementation - no need to be really accurate.
- */
-void timer_interrupt(struct pt_regs *regs)
+void timer_interrupt_cpu(struct pt_regs *regs)
{
- timestamp++;
- set_dec (decrementer_count);
+ /* PIS is same as DIS, dec interrupt status */
mtspr(SPRN_TSR, TSR_PIS);
-#if defined(CONFIG_WATCHDOG)
- if ((timestamp % 1000) == 0)
- reset_85xx_watchdog();
-#endif /* CONFIG_WATCHDOG */
-}
-
-void reset_timer (void)
-{
- timestamp = 0;
-}
-
-ulong get_timer (ulong base)
-{
- return (timestamp - base);
-}
-
-void set_timer (ulong t)
-{
- timestamp = t;
}
#if defined(CONFIG_CMD_IRQ)
-
-/*******************************************************************************
- *
- * irqinfo - print information about PCI devices,not implemented.
- *
- */
-int
-do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+/* irqinfo - print information about PCI devices,not implemented. */
+int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- printf ("\nInterrupt-unsupported:\n");
-
return 0;
}
-
#endif