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- /*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- /*
- * Mach kernel startup.
- */
- #include <string.h>
- #include <mach/boolean.h>
- #include <mach/machine.h>
- #include <mach/task_special_ports.h>
- #include <mach/vm_param.h>
- #include <ipc/ipc_init.h>
- #include <kern/cpu_number.h>
- #include <kern/debug.h>
- #include <kern/gsync.h>
- #include <kern/machine.h>
- #include <kern/mach_factor.h>
- #include <kern/mach_clock.h>
- #include <kern/processor.h>
- #include <kern/rdxtree.h>
- #include <kern/sched_prim.h>
- #include <kern/task.h>
- #include <kern/thread.h>
- #include <kern/thread_swap.h>
- #include <kern/timer.h>
- #include <kern/xpr.h>
- #include <kern/bootstrap.h>
- #include <kern/time_stamp.h>
- #include <kern/startup.h>
- #include <vm/vm_kern.h>
- #include <vm/vm_map.h>
- #include <vm/vm_object.h>
- #include <vm/vm_page.h>
- #include <vm/vm_init.h>
- #include <vm/vm_pageout.h>
- #include <machine/machspl.h>
- #include <machine/pcb.h>
- #include <machine/pmap.h>
- #include <machine/model_dep.h>
- #include <mach/version.h>
- #include <device/device_init.h>
- #if MACH_KDB
- #include <device/cons.h>
- #endif /* MACH_KDB */
- #if ! MACH_KBD
- boolean_t reboot_on_panic = TRUE;
- #endif
- #if NCPUS > 1
- #include <machine/mp_desc.h>
- #include <kern/machine.h>
- #endif /* NCPUS > 1 */
- /* XX */
- extern char *kernel_cmdline;
- /*
- * Running in virtual memory, on the interrupt stack.
- * Does not return. Dispatches initial thread.
- *
- * Assumes that master_cpu is set.
- */
- void setup_main(void)
- {
- thread_t startup_thread;
- #if MACH_KDB
- /*
- * Cause a breakpoint trap to the debugger before proceeding
- * any further if the proper option flag was specified
- * on the kernel's command line.
- * XXX check for surrounding spaces.
- */
- if (strstr(kernel_cmdline, "-d ")) {
- cninit(); /* need console for debugger */
- SoftDebugger("init");
- }
- #else /* MACH_KDB */
- if (strstr (kernel_cmdline, "-H ")) {
- reboot_on_panic = FALSE;
- }
- #endif /* MACH_KDB */
- panic_init();
- sched_init();
- vm_mem_bootstrap();
- rdxtree_cache_init();
- ipc_bootstrap();
- vm_mem_init();
- ipc_init();
- /*
- * As soon as the virtual memory system is up, we record
- * that this CPU is using the kernel pmap.
- */
- PMAP_ACTIVATE_KERNEL(master_cpu);
- init_timers();
- init_timeout();
- #if XPR_DEBUG
- xprbootstrap();
- #endif /* XPR_DEBUG */
- timestamp_init();
- machine_init();
- mapable_time_init();
- machine_info.max_cpus = NCPUS;
- machine_info.memory_size = vm_page_mem_size(); /* XXX phys_addr_t -> vm_size_t */
- machine_info.avail_cpus = 0;
- machine_info.major_version = KERNEL_MAJOR_VERSION;
- machine_info.minor_version = KERNEL_MINOR_VERSION;
- /*
- * Initialize the IPC, task, and thread subsystems.
- */
- task_init();
- thread_init();
- swapper_init();
- #if MACH_HOST
- pset_sys_init();
- #endif /* MACH_HOST */
- /*
- * Kick off the time-out driven routines by calling
- * them the first time.
- */
- recompute_priorities(NULL);
- compute_mach_factor();
- gsync_setup ();
- /*
- * Create a kernel thread to start the other kernel
- * threads. Thread_resume (from kernel_thread) calls
- * thread_setrun, which may look at current thread;
- * we must avoid this, since there is no current thread.
- */
- /*
- * Create the thread, and point it at the routine.
- */
- (void) thread_create(kernel_task, &startup_thread);
- thread_start(startup_thread, start_kernel_threads);
- /*
- * Give it a kernel stack.
- */
- thread_doswapin(startup_thread);
- /*
- * Pretend it is already running, and resume it.
- * Since it looks as if it is running, thread_resume
- * will not try to put it on the run queues.
- *
- * We can do all of this without locking, because nothing
- * else is running yet.
- */
- startup_thread->state |= TH_RUN;
- (void) thread_resume(startup_thread);
- /*
- * Start the thread.
- */
- cpu_launch_first_thread(startup_thread);
- /*NOTREACHED*/
- }
- /*
- * Now running in a thread. Create the rest of the kernel threads
- * and the bootstrap task.
- */
- void start_kernel_threads(void)
- {
- int i;
- /*
- * Create the idle threads and the other
- * service threads.
- */
- for (i = 0; i < NCPUS; i++) {
- if (machine_slot[i].is_cpu) {
- thread_t th;
- (void) thread_create(kernel_task, &th);
- thread_bind(th, cpu_to_processor(i));
- thread_start(th, idle_thread);
- thread_doswapin(th);
- (void) thread_resume(th);
- }
- }
- (void) kernel_thread(kernel_task, reaper_thread, (char *) 0);
- (void) kernel_thread(kernel_task, swapin_thread, (char *) 0);
- (void) kernel_thread(kernel_task, sched_thread, (char *) 0);
- #if NCPUS > 1
- /*
- * Create the shutdown thread.
- */
- (void) kernel_thread(kernel_task, action_thread, (char *) 0);
- /*
- * Allow other CPUs to run.
- */
- start_other_cpus();
- #endif /* NCPUS > 1 */
- /*
- * Create the device service.
- */
- device_service_create();
-
- //APPLE starts IOKit here
- /*
- * Initialize kernel task's creation time.
- * When we created the kernel task in task_init, the mapped
- * time was not yet available. Now, last thing before starting
- * the user bootstrap, record the current time as the kernel
- * task's creation time.
- */
- record_time_stamp (&kernel_task->creation_time);
- /*
- * Start the user bootstrap.
- */
- bootstrap_create();
- #if XPR_DEBUG
- xprinit(); /* XXX */
- #endif /* XPR_DEBUG */
- /*
- * Become the pageout daemon.
- */
- (void) spl0();
- vm_pageout();
- /*NOTREACHED*/
- }
- #if NCPUS > 1
- void slave_main(void)
- {
- cpu_launch_first_thread(THREAD_NULL);
- }
- #endif /* NCPUS > 1 */
- /*
- * Start up the first thread on a CPU.
- * First thread is specified for the master CPU.
- */
- void cpu_launch_first_thread(thread_t th)
- {
- int mycpu;
- mycpu = cpu_number();
- cpu_up(mycpu);
- start_timer(&kernel_timer[mycpu]);
- /*
- * Block all interrupts for choose_thread.
- */
- (void) splhigh();
- if (th == THREAD_NULL)
- th = choose_thread(cpu_to_processor(mycpu));
- if (th == THREAD_NULL)
- panic("cpu_launch_first_thread");
- PMAP_ACTIVATE_KERNEL(mycpu);
- active_threads[mycpu] = th;
- active_stacks[mycpu] = th->kernel_stack;
- thread_lock(th);
- th->state &= ~TH_UNINT;
- thread_unlock(th);
- timer_switch(&th->system_timer);
- PMAP_ACTIVATE_USER(vm_map_pmap(th->task->map), th, mycpu);
- startrtclock(); /* needs an active thread */
- load_context(th);
- /*NOTREACHED*/
- }
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