From f07a4c844da9f0ecae5bbee1ab94be56505f26f7 Mon Sep 17 00:00:00 2001
From: Thomas Bushnell <thomas@gnu.org>
Date: Tue, 25 Feb 1997 21:28:37 +0000
Subject: Initial source
---
kern/startup.c | 305 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 305 insertions(+)
create mode 100644 kern/startup.c
(limited to 'kern/startup.c')
diff --git a/kern/startup.c b/kern/startup.c
new file mode 100644
index 00000000..dc0d5a01
--- /dev/null
+++ b/kern/startup.c
@@ -0,0 +1,305 @@
+/*
+ * 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 <xpr_debug.h>
+#include <cpus.h>
+#include <mach_host.h>
+#include <norma_ipc.h>
+#include <norma_vm.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/processor.h>
+#include <kern/sched_prim.h>
+#include <kern/task.h>
+#include <kern/thread.h>
+#include <kern/thread_swap.h>
+#include <kern/time_out.h>
+#include <kern/timer.h>
+#include <kern/zalloc.h>
+#include <vm/vm_kern.h>
+#include <vm/vm_map.h>
+#include <vm/vm_object.h>
+#include <vm/vm_page.h>
+#include <machine/machspl.h>
+#include <machine/pmap.h>
+#include <mach/version.h>
+
+
+
+extern void vm_mem_init();
+extern void vm_mem_bootstrap();
+extern void init_timeout();
+extern void machine_init();
+
+extern void idle_thread();
+extern void vm_pageout();
+extern void reaper_thread();
+extern void swapin_thread();
+extern void sched_thread();
+
+extern void bootstrap_create();
+extern void device_service_create();
+
+void cpu_launch_first_thread(); /* forward */
+void start_kernel_threads(); /* forward */
+
+#if NCPUS > 1
+extern void start_other_cpus();
+extern void action_thread();
+#endif NCPUS > 1
+
+/* XX */
+extern vm_offset_t phys_first_addr, phys_last_addr;
+
+/*
+ * Running in virtual memory, on the interrupt stack.
+ * Does not return. Dispatches initial thread.
+ *
+ * Assumes that master_cpu is set.
+ */
+void setup_main()
+{
+ thread_t startup_thread;
+
+ panic_init();
+ printf_init();
+
+ sched_init();
+ vm_mem_bootstrap();
+ 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();
+
+ mapable_time_init();
+
+ machine_init();
+
+ machine_info.max_cpus = NCPUS;
+ machine_info.memory_size = phys_last_addr - phys_first_addr; /* XXX mem_size */
+ 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();
+ compute_mach_factor();
+
+ /*
+ * 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()
+{
+ register 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();
+
+ /*
+ * Initialize NORMA ipc system.
+ */
+#if NORMA_IPC
+ norma_ipc_init();
+#endif NORMA_IPC
+
+ /*
+ * Initialize NORMA vm system.
+ */
+#if NORMA_VM
+ norma_vm_init();
+#endif NORMA_VM
+
+ /*
+ * 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()
+{
+ 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(th)
+ register thread_t th;
+{
+ register 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");
+
+ startrtclock(); /* needs an active 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);
+
+ load_context(th);
+ /*NOTREACHED*/
+}
--
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