- if(cpu_find_by_instance(1, NULL, NULL))
- return; /* Not an MP box. */
- for(i = 0; i < NR_CPUS; i++) {
- if(i == boot_cpu_id)
- continue;
-
- if (cpu_isset(i, cpu_present_map)) {
- extern unsigned long sun4m_cpu_startup;
- unsigned long *entry = &sun4m_cpu_startup;
- struct task_struct *p;
- int timeout;
-
- /* Cook up an idler for this guy. */
- p = fork_idle(i);
- cpucount++;
- current_set[i] = p->thread_info;
- /* See trampoline.S for details... */
- entry += ((i-1) * 3);
-
- /*
- * Initialize the contexts table
- * Since the call to prom_startcpu() trashes the structure,
- * we need to re-initialize it for each cpu
- */
- smp_penguin_ctable.which_io = 0;
- smp_penguin_ctable.phys_addr = (unsigned int) srmmu_ctx_table_phys;
- smp_penguin_ctable.reg_size = 0;
-
- /* whirrr, whirrr, whirrrrrrrrr... */
- printk("Starting CPU %d at %p\n", i, entry);
- local_flush_cache_all();
- prom_startcpu(cpu_data(i).prom_node,
- &smp_penguin_ctable, 0, (char *)entry);
-
- /* wheee... it's going... */
- for(timeout = 0; timeout < 10000; timeout++) {
- if(cpu_callin_map[i])
- break;
- udelay(200);
- }
- if(cpu_callin_map[i]) {
- /* Another "Red Snapper". */
- __cpu_number_map[i] = i;
- __cpu_logical_map[i] = i;
- } else {
- cpucount--;
- printk("Processor %d is stuck.\n", i);
- }
- }
- if(!(cpu_callin_map[i])) {
- cpu_clear(i, cpu_present_map);
- __cpu_number_map[i] = -1;