/*
* Called by secondaries to update state and initialize CPU registers.
*/
static void __init
smp_cpu_init(int cpunum)
{
extern int init_per_cpu(int); /* arch/parisc/kernel/processor.c */
extern void init_IRQ(void); /* arch/parisc/kernel/irq.c */
extern void start_cpu_itimer(void); /* arch/parisc/kernel/time.c */
/* Set modes and Enable floating point coprocessor */
(void) init_per_cpu(cpunum);
disable_sr_hashing();
mb();
/* Well, support 2.4 linux scheme as well. */
if (cpu_online(cpunum)) {
extern void machine_halt(void); /* arch/parisc.../process.c */
printk(KERN_CRIT "CPU#%d already initialized!\n", cpunum);
machine_halt();
}
notify_cpu_starting(cpunum);
set_cpu_online(cpunum, true);
/* Initialise the idle task for this CPU */
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
init_IRQ(); /* make sure no IRQs are enabled or pending */
start_cpu_itimer();
}
void __init time_init(void)
{
unsigned long cr16_hz;
clocktick = (100 * PAGE0->mem_10msec) / HZ;
start_cpu_itimer(); /* get CPU 0 started */
cr16_hz = 100 * PAGE0->mem_10msec; /* Hz */
/* register as sched_clock source */
sched_clock_register(read_cr16_sched_clock, BITS_PER_LONG, cr16_hz);
}
