aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/mipssim/sim_time.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/mipssim/sim_time.c')
-rw-r--r--arch/mips/mipssim/sim_time.c117
1 files changed, 0 insertions, 117 deletions
diff --git a/arch/mips/mipssim/sim_time.c b/arch/mips/mipssim/sim_time.c
deleted file mode 100644
index 77bad3c04280..000000000000
--- a/arch/mips/mipssim/sim_time.c
+++ /dev/null
@@ -1,117 +0,0 @@
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/kernel_stat.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/mc146818rtc.h>
-#include <linux/smp.h>
-#include <linux/timex.h>
-
-#include <asm/hardirq.h>
-#include <asm/div64.h>
-#include <asm/cpu.h>
-#include <asm/setup.h>
-#include <asm/time.h>
-#include <asm/irq.h>
-#include <asm/mc146818-time.h>
-#include <asm/msc01_ic.h>
-
-#include <asm/mips-boards/generic.h>
-#include <asm/mips-boards/prom.h>
-#include <asm/mips-boards/simint.h>
-
-
-unsigned long cpu_khz;
-
-/*
- * Estimate CPU frequency. Sets mips_hpt_frequency as a side-effect
- */
-static unsigned int __init estimate_cpu_frequency(void)
-{
- unsigned int prid = read_c0_prid() & 0xffff00;
- unsigned int count;
-
-#if 1
- /*
- * hardwire the board frequency to 12MHz.
- */
-
- if ((prid == (PRID_COMP_MIPS | PRID_IMP_20KC)) ||
- (prid == (PRID_COMP_MIPS | PRID_IMP_25KF)))
- count = 12000000;
- else
- count = 6000000;
-#else
- unsigned int flags;
-
- local_irq_save(flags);
-
- /* Start counter exactly on falling edge of update flag */
- while (CMOS_READ(RTC_REG_A) & RTC_UIP);
- while (!(CMOS_READ(RTC_REG_A) & RTC_UIP));
-
- /* Start r4k counter. */
- write_c0_count(0);
-
- /* Read counter exactly on falling edge of update flag */
- while (CMOS_READ(RTC_REG_A) & RTC_UIP);
- while (!(CMOS_READ(RTC_REG_A) & RTC_UIP));
-
- count = read_c0_count();
-
- /* restore interrupts */
- local_irq_restore(flags);
-#endif
-
- mips_hpt_frequency = count;
-
- if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) &&
- (prid != (PRID_COMP_MIPS | PRID_IMP_25KF)))
- count *= 2;
-
- count += 5000; /* round */
- count -= count%10000;
-
- return count;
-}
-
-static int mips_cpu_timer_irq;
-
-static void mips_timer_dispatch(void)
-{
- do_IRQ(mips_cpu_timer_irq);
-}
-
-
-unsigned __cpuinit get_c0_compare_int(void)
-{
-#ifdef MSC01E_INT_BASE
- if (cpu_has_veic) {
- set_vi_handler(MSC01E_INT_CPUCTR, mips_timer_dispatch);
- mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR;
-
- return mips_cpu_timer_irq;
- }
-#endif
- if (cpu_has_vint)
- set_vi_handler(cp0_compare_irq, mips_timer_dispatch);
- mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
-
- return mips_cpu_timer_irq;
-}
-
-void __init plat_time_init(void)
-{
- unsigned int est_freq;
-
- /* Set Data mode - binary. */
- CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
-
- est_freq = estimate_cpu_frequency();
-
- printk(KERN_INFO "CPU frequency %d.%02d MHz\n", est_freq / 1000000,
- (est_freq % 1000000) * 100 / 1000000);
-
- cpu_khz = est_freq / 1000;
-}