/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <debug.h>
#include <xpr_debug.h>
#include <mach_kdp.h>
-#include <cpus.h>
#include <mach_host.h>
#include <norma_vm.h>
-#include <etap.h>
#include <mach/boolean.h>
#include <mach/machine.h>
+#include <mach/thread_act.h>
#include <mach/task_special_ports.h>
#include <mach/vm_param.h>
#include <ipc/ipc_init.h>
#include <kern/misc_protos.h>
#include <kern/clock.h>
#include <kern/cpu_number.h>
-#include <kern/etap_macros.h>
+#include <kern/ledger.h>
#include <kern/machine.h>
#include <kern/processor.h>
#include <kern/sched_prim.h>
-#include <kern/mk_sp.h>
#include <kern/startup.h>
#include <kern/task.h>
#include <kern/thread.h>
#include <kern/timer.h>
-#include <kern/timer_call.h>
#include <kern/xpr.h>
#include <kern/zalloc.h>
+#include <kern/locks.h>
+#include <vm/vm_shared_memory_server.h>
#include <vm/vm_kern.h>
#include <vm/vm_init.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
#include <machine/pmap.h>
-#include <sys/version.h>
+#include <machine/commpage.h>
+#include <libkern/version.h>
#ifdef __ppc__
#include <ppc/Firmware.h>
#include <ppc/mappings.h>
+#include <ppc/serial_io.h>
#endif
-/* Externs XXX */
-extern void rtclock_reset(void);
+static void kernel_bootstrap_thread(void);
-/* Forwards */
-void cpu_launch_first_thread(
- thread_t thread);
-void start_kernel_threads(void);
-void swapin_thread();
+static void load_context(
+ thread_t thread);
/*
* Running in virtual memory, on the interrupt stack.
- * Does not return. Dispatches initial thread.
- *
- * Assumes that master_cpu is set.
*/
void
-setup_main(void)
+kernel_bootstrap(void)
{
- thread_t startup_thread;
+ kern_return_t result;
+ thread_t thread;
+ lck_mod_init();
sched_init();
vm_mem_bootstrap();
ipc_bootstrap();
*/
PMAP_ACTIVATE_KERNEL(master_cpu);
-#ifdef __ppc__
mapping_free_prime(); /* Load up with temporary mapping blocks */
-#endif
machine_init();
kmod_init();
clock_init();
- init_timers();
- timer_call_initialize();
-
- machine_info.max_cpus = NCPUS;
machine_info.memory_size = mem_size;
- machine_info.avail_cpus = 0;
- machine_info.major_version = KERNEL_MAJOR_VERSION;
- machine_info.minor_version = KERNEL_MINOR_VERSION;
+ machine_info.max_mem = max_mem;
+ machine_info.major_version = version_major;
+ machine_info.minor_version = version_minor;
/*
* Initialize the IPC, task, and thread subsystems.
*/
ledger_init();
task_init();
- act_init();
thread_init();
- subsystem_init();
-
- /*
- * Initialize the Event Trace Analysis Package.
- * Dynamic Phase: 2 of 2
- */
- etap_init_phase2();
/*
- * 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 a kernel thread to execute the kernel bootstrap.
*/
- startup_thread = kernel_thread_with_priority(
- kernel_task, MAXPRI_KERNEL,
- start_kernel_threads, TRUE, FALSE);
-
- /*
- * 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->top_act);
- /*
- * Start the thread.
- */
- cpu_launch_first_thread(startup_thread);
+ result = kernel_thread_create((thread_continue_t)kernel_bootstrap_thread, NULL, MAXPRI_KERNEL, &thread);
+ if (result != KERN_SUCCESS)
+ panic("kernel_bootstrap");
+
+ thread->state = TH_RUN;
+ thread_deallocate(thread);
+
+ load_context(thread);
/*NOTREACHED*/
- panic("cpu_launch_first_thread returns!");
}
/*
- * Now running in a thread. Create the rest of the kernel threads
- * and the bootstrap task.
+ * Now running in a thread. Kick off other services,
+ * invoke user bootstrap, enter pageout loop.
*/
-void
-start_kernel_threads(void)
+static void
+kernel_bootstrap_thread(void)
{
- register int i;
-
- thread_bind(current_thread(), cpu_to_processor(cpu_number()));
-
- /*
- * Create the idle threads and the other
- * service threads.
- */
- for (i = 0; i < NCPUS; i++) {
- processor_t processor = cpu_to_processor(i);
- thread_t thread;
- spl_t s;
-
- thread = kernel_thread_with_priority(
- kernel_task, MAXPRI_KERNEL,
- idle_thread, TRUE, FALSE);
- s = splsched();
- thread_lock(thread);
- thread_bind_locked(thread, processor);
- processor->idle_thread = thread;
- thread->ref_count++;
- thread->state |= TH_IDLE;
- thread_go_locked(thread, THREAD_AWAKENED);
- thread_unlock(thread);
- splx(s);
- }
+ processor_t processor = current_processor();
+ thread_t self = current_thread();
/*
- * Initialize the stack swapin mechanism.
+ * Create the idle processor thread.
*/
- swapin_init();
+ idle_thread_create(processor);
/*
- * Initialize the periodic scheduler mechanism.
+ * N.B. Do not stick anything else
+ * before this point.
+ *
+ * Start up the scheduler services.
*/
- sched_tick_init();
+ sched_startup();
/*
- * Initialize the thread callout mechanism.
+ * Remain on current processor as
+ * additional processors come online.
*/
- thread_call_initialize();
+ thread_bind(self, processor);
/*
- * Invoke some black magic.
+ * Kick off memory mapping adjustments.
*/
-#if __ppc__
mapping_adjust();
-#endif
-
- /*
- * Initialize the thread reaper mechanism.
- */
- thread_reaper();
/*
* Create the clock service.
*/
device_service_create();
- shared_file_boot_time_init();
+ shared_file_boot_time_init(ENV_DEFAULT_ROOT, cpu_type());
#ifdef IOKIT
{
PE_init_iokit();
}
#endif
+
+ (void) spllo(); /* Allow interruptions */
+
+ /*
+ * Fill in the comm area (mapped into every task address space.)
+ */
+ commpage_populate();
/*
* Start the user bootstrap.
*/
-
- (void) spllo(); /* Allow interruptions */
-
#ifdef MACH_BSD
{
- extern void bsd_init(void);
bsd_init();
}
#endif
- thread_bind(current_thread(), PROCESSOR_NULL);
+#if __ppc__
+ serial_keyboard_init(); /* Start serial keyboard if wanted */
+#endif
+
+ thread_bind(self, PROCESSOR_NULL);
/*
* Become the pageout daemon.
*/
-
vm_pageout();
/*NOTREACHED*/
}
+/*
+ * slave_main:
+ *
+ * Load the first thread to start a processor.
+ */
void
slave_main(void)
{
- processor_t myprocessor = current_processor();
+ processor_t processor = current_processor();
thread_t thread;
- thread = myprocessor->next_thread;
- myprocessor->next_thread = THREAD_NULL;
- if (thread == THREAD_NULL) {
- thread = machine_wake_thread;
- machine_wake_thread = THREAD_NULL;
- thread_bind(thread, myprocessor);
+ /*
+ * Use the idle processor thread if there
+ * is no dedicated start up thread.
+ */
+ if (processor->next_thread == THREAD_NULL) {
+ thread = processor->idle_thread;
+ thread->continuation = (thread_continue_t)processor_start_thread;
+ thread->parameter = NULL;
}
- cpu_launch_first_thread(thread);
+ else {
+ thread = processor->next_thread;
+ processor->next_thread = THREAD_NULL;
+ }
+
+ load_context(thread);
/*NOTREACHED*/
- panic("slave_main");
}
/*
- * Now running in a thread context
+ * processor_start_thread:
+ *
+ * First thread to execute on a started processor.
+ *
+ * Called at splsched.
*/
void
-start_cpu_thread(void)
+processor_start_thread(void)
{
- processor_t processor;
-
- processor = cpu_to_processor(cpu_number());
+ processor_t processor = current_processor();
+ thread_t self = current_thread();
slave_machine_init();
- if (processor->processor_self == IP_NULL) {
- ipc_processor_init(processor);
- ipc_processor_enable(processor);
- }
+ /*
+ * If running the idle processor thread,
+ * reenter the idle loop, else terminate.
+ */
+ if (self == processor->idle_thread)
+ thread_block((thread_continue_t)idle_thread);
- (void) thread_terminate(current_act());
+ thread_terminate(self);
+ /*NOTREACHED*/
}
/*
- * Start up the first thread on a CPU.
+ * load_context:
+ *
+ * Start the first thread on a processor.
*/
-void
-cpu_launch_first_thread(
+static void
+load_context(
thread_t thread)
{
- register int mycpu = cpu_number();
+ processor_t processor = current_processor();
- /* initialize preemption disabled */
- cpu_data[mycpu].preemption_level = 1;
+ machine_set_current_thread(thread);
+ processor_up(processor);
- cpu_up(mycpu);
- start_timer(&kernel_timer[mycpu]);
- clock_get_uptime(&cpu_to_processor(mycpu)->last_dispatch);
+ PMAP_ACTIVATE_KERNEL(PROCESSOR_DATA(processor, slot_num));
- if (thread == THREAD_NULL) {
- thread = cpu_to_processor(mycpu)->idle_thread;
- if (thread == THREAD_NULL)
- panic("cpu_launch_first_thread");
+ /*
+ * Acquire a stack if none attached. The panic
+ * should never occur since the thread is expected
+ * to have reserved stack.
+ */
+ if (!thread->kernel_stack) {
+ if (!stack_alloc_try(thread))
+ panic("load_context");
}
- rtclock_reset(); /* start realtime clock ticking */
- PMAP_ACTIVATE_KERNEL(mycpu);
+ /*
+ * The idle processor threads are not counted as
+ * running for load calculations.
+ */
+ if (!(thread->state & TH_IDLE))
+ pset_run_incr(thread->processor_set);
- thread_machine_set_current(thread);
- thread_lock(thread);
- thread->state &= ~TH_UNINT;
- _mk_sp_thread_begin(thread);
- thread_unlock(thread);
- timer_switch(&thread->system_timer);
+ processor->active_thread = thread;
+ processor->current_pri = thread->sched_pri;
+ processor->deadline = UINT64_MAX;
+ thread->last_processor = processor;
- PMAP_ACTIVATE_USER(thread->top_act, mycpu);
+ processor->last_dispatch = mach_absolute_time();
+ timer_switch((uint32_t)processor->last_dispatch,
+ &PROCESSOR_DATA(processor, offline_timer));
- /* preemption enabled by load_context */
- load_context(thread);
+ PMAP_ACTIVATE_USER(thread, PROCESSOR_DATA(processor, slot_num));
+
+ machine_load_context(thread);
/*NOTREACHED*/
}
projects / apple / xnu.git / blobdiff