static int __init smp_core99_probe(void)
{
struct device_node *cpus;
struct device_node *cc;
int ncpus = 0;
/* Maybe use systemconfiguration here ? */
if (ppc_md.progress) ppc_md.progress("smp_core99_probe", 0x345);
/* Count CPUs in the device-tree */
for (cpus = NULL; (cpus = of_find_node_by_type(cpus, "cpu")) != NULL;)
++ncpus;
printk(KERN_INFO "PowerMac SMP probe found %d cpus\n", ncpus);
/* Nothing more to do if less than 2 of them */
if (ncpus <= 1)
return 1;
/* Look for the clock chip */
for (cc = NULL; (cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL;) {
struct device_node *p = of_get_parent(cc);
u32 *reg;
int ok;
ok = p && device_is_compatible(p, "uni-n-i2c");
if (!ok)
goto next;
reg = (u32 *)get_property(cc, "reg", NULL);
if (reg == NULL)
goto next;
switch (*reg) {
case 0xd2:
pmac_tb_freeze = smp_core99_cypress_tb_freeze;
printk(KERN_INFO "Timebase clock is Cypress chip\n");
break;
case 0xd4:
pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
printk(KERN_INFO "Timebase clock is Pulsar chip\n");
break;
}
if (pmac_tb_freeze != NULL) {
pmac_tb_clock_chip_host = p;
smp_ops->give_timebase = smp_core99_give_timebase;
smp_ops->take_timebase = smp_core99_take_timebase;
break;
}
next:
of_node_put(p);
}
mpic_request_ipis();
return ncpus;
}
int __init smp_mpic_probe(void)
{
int nr_cpus;
DBG("smp_mpic_probe()...\n");
nr_cpus = cpus_weight(cpu_possible_map);
DBG("nr_cpus: %d\n", nr_cpus);
if (nr_cpus > 1)
mpic_request_ipis();
return nr_cpus;
}
