X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e5568f75972dfc723778653c11cb6b4dc825716a..4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32:/osfmk/kern/startup.c diff --git a/osfmk/kern/startup.c b/osfmk/kern/startup.c index c6668bd8c..3c132bb74 100644 --- a/osfmk/kern/startup.c +++ b/osfmk/kern/startup.c @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2007 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -47,6 +53,12 @@ * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ +/* + * NOTICE: This file was modified by McAfee Research in 2004 to introduce + * support for mandatory and extensible security protections. This notice + * is included in support of clause 2.2 (b) of the Apple Public License, + * Version 2.0. + */ /* */ @@ -57,13 +69,11 @@ #include #include #include -#include -#include #include -#include #include #include +#include #include #include #include @@ -71,175 +81,181 @@ #include #include #include -#include +#include #include #include #include -#include #include #include #include #include -#include #include #include -#include +#include +#include #include #include #include #include #include #include +#include #include #include -#include +#include + +#if CONFIG_MACF +#include +#endif #ifdef __ppc__ #include #include #endif -/* Externs XXX */ -extern void rtclock_reset(void); +static void kernel_bootstrap_thread(void); + +static void load_context( + thread_t thread); +#ifdef i386 +extern void cpu_userwindow_init(int); +extern void cpu_physwindow_init(int); +#endif -/* Forwards */ -void cpu_launch_first_thread( - thread_t thread); -void start_kernel_threads(void); +#ifdef CONFIG_JETTISON_KERNEL_LINKER +extern void jettison_kernel_linker(void); +#endif /* * 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; + + printf("%s\n", version); /* log kernel version */ +#define kernel_bootstrap_kprintf(x...) /* kprintf("kernel_bootstrap: " x) */ + + kernel_bootstrap_kprintf("calling lck_mod_init\n"); + lck_mod_init(); + + kernel_bootstrap_kprintf("calling sched_init\n"); sched_init(); + + kernel_bootstrap_kprintf("calling vm_mem_bootstrap\n"); vm_mem_bootstrap(); + + kernel_bootstrap_kprintf("calling ipc_bootstrap\n"); ipc_bootstrap(); + + kernel_bootstrap_kprintf("calling vm_mem_init\n"); vm_mem_init(); + + kernel_bootstrap_kprintf("calling kmod_init\n"); + kmod_init(); +#if CONFIG_MACF + mac_policy_init(); +#endif + kernel_bootstrap_kprintf("calling ipc_init\n"); ipc_init(); /* * As soon as the virtual memory system is up, we record * that this CPU is using the kernel pmap. */ + kernel_bootstrap_kprintf("calling PMAP_ACTIVATE_KERNEL\n"); PMAP_ACTIVATE_KERNEL(master_cpu); -#ifdef __ppc__ + kernel_bootstrap_kprintf("calling mapping_free_prime\n"); mapping_free_prime(); /* Load up with temporary mapping blocks */ -#endif + kernel_bootstrap_kprintf("calling machine_init\n"); machine_init(); - kmod_init(); - clock_init(); - init_timers(); - timer_call_initialize(); + kernel_bootstrap_kprintf("calling clock_init\n"); + clock_init(); - 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. */ + kernel_bootstrap_kprintf("calling ledger_init\n"); ledger_init(); + + kernel_bootstrap_kprintf("calling task_init\n"); task_init(); - thread_init(); - /* - * Initialize the Event Trace Analysis Package. - * Dynamic Phase: 2 of 2 - */ - etap_init_phase2(); + kernel_bootstrap_kprintf("calling thread_init\n"); + thread_init(); /* - * Create a kernel thread to start the other kernel - * threads. + * Create a kernel thread to execute the kernel bootstrap. */ - startup_thread = kernel_thread_create(start_kernel_threads, MAXPRI_KERNEL); + kernel_bootstrap_kprintf("calling kernel_thread_create\n"); + result = kernel_thread_create((thread_continue_t)kernel_bootstrap_thread, NULL, MAXPRI_KERNEL, &thread); - /* - * Start the thread. - */ - startup_thread->state = TH_RUN; - pset_run_incr(startup_thread->processor_set); + if (result != KERN_SUCCESS) panic("kernel_bootstrap: result = %08X\n", result); - cpu_launch_first_thread(startup_thread); + thread->state = TH_RUN; + thread_deallocate(thread); + + kernel_bootstrap_kprintf("calling load_context - done\n"); + load_context(thread); /*NOTREACHED*/ - panic("cpu_launch_first_thread returns!"); } +int kth_started = 0; + /* - * 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_create(idle_thread, MAXPRI_KERNEL); - - s = splsched(); - thread_lock(thread); - thread->bound_processor = processor; - processor->idle_thread = thread; - thread->ref_count++; - thread->sched_pri = thread->priority = IDLEPRI; - thread->state = (TH_RUN | TH_IDLE); - thread_unlock(thread); - splx(s); - } + processor_t processor = current_processor(); +#define kernel_bootstrap_thread_kprintf(x...) /* kprintf("kernel_bootstrap_thread: " x) */ + kernel_bootstrap_thread_kprintf("calling idle_thread_create\n"); /* - * Initialize the thread reaper mechanism. + * Create the idle processor thread. */ - thread_reaper_init(); + idle_thread_create(processor); /* - * Initialize the stack swapin mechanism. + * N.B. Do not stick anything else + * before this point. + * + * Start up the scheduler services. */ - swapin_init(); + kernel_bootstrap_thread_kprintf("calling sched_startup\n"); + sched_startup(); /* - * Initialize the periodic scheduler mechanism. + * Remain on current processor as + * additional processors come online. */ - sched_tick_init(); + kernel_bootstrap_thread_kprintf("calling thread_bind\n"); + thread_bind(processor); /* - * Initialize the thread callout mechanism. + * Kick off memory mapping adjustments. */ - thread_call_initialize(); - - /* - * Invoke some black magic. - */ -#if __ppc__ + kernel_bootstrap_thread_kprintf("calling mapping_adjust\n"); mapping_adjust(); -#endif /* * Create the clock service. */ + kernel_bootstrap_thread_kprintf("calling clock_service_create\n"); clock_service_create(); /* @@ -247,105 +263,178 @@ start_kernel_threads(void) */ device_service_create(); - shared_file_boot_time_init(ENV_DEFAULT_ROOT, machine_slot[cpu_number()].cpu_type); + kth_started = 1; + +#ifdef i386 + /* + * Create and initialize the physical copy window for processor 0 + * This is required before starting kicking off IOKit. + */ + cpu_physwindow_init(0); +#endif #ifdef IOKIT - { - PE_init_iokit(); - } + PE_init_iokit(); #endif (void) spllo(); /* Allow interruptions */ - /* - * Fill in the comm area (mapped into every task address space.) - */ - commpage_populate(); +#ifdef i386 + /* + * Create and initialize the copy window for processor 0 + * This also allocates window space for all other processors. + * However, this is dependent on the number of processors - so this call + * must be after IOKit has been started because IOKit performs processor + * discovery. + */ + cpu_userwindow_init(0); +#endif + + /* + * Initialize the shared region module. + */ + vm_shared_region_init(); + vm_commpage_init(); + +#if CONFIG_MACF + mac_policy_initmach(); +#endif /* * Start the user bootstrap. */ - #ifdef MACH_BSD - { - extern void bsd_init(void); - bsd_init(); - } + bsd_init(); #endif -#if __ppc__ - serial_keyboard_init(); /* Start serial keyboard if wanted */ +#ifdef CONFIG_JETTISON_KERNEL_LINKER + /* We do not run kextd, so get rid of the kernel linker now */ + jettison_kernel_linker(); #endif - thread_bind(current_thread(), PROCESSOR_NULL); + serial_keyboard_init(); /* Start serial keyboard if wanted */ + + thread_bind(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; + /* + * 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; + } + else { + thread = processor->next_thread; + processor->next_thread = THREAD_NULL; } - cpu_launch_first_thread(thread); + 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 = current_processor(); + thread_t self = current_thread(); + slave_machine_init(); - (void) thread_terminate(current_act()); + /* + * If running the idle processor thread, + * reenter the idle loop, else terminate. + */ + if (self == processor->idle_thread) + thread_block((thread_continue_t)idle_thread); + + 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 = cpu_to_processor(mycpu); + processor_t processor = current_processor(); - clock_get_uptime(&processor->last_dispatch); - start_timer(&kernel_timer[mycpu]); - machine_thread_set_current(thread); - cpu_up(mycpu); - rtclock_reset(); /* start realtime clock ticking */ - PMAP_ACTIVATE_KERNEL(mycpu); +#define load_context_kprintf(x...) /* kprintf("load_context: " x) */ + + load_context_kprintf("calling machine_set_current_thread\n"); + machine_set_current_thread(thread); + + load_context_kprintf("calling processor_up\n"); + processor_up(processor); + + PMAP_ACTIVATE_KERNEL(PROCESSOR_DATA(processor, slot_num)); + + /* + * Acquire a stack if none attached. The panic + * should never occur since the thread is expected + * to have reserved stack. + */ + load_context_kprintf("stack %x, stackptr %x\n", + thread->kernel_stack, thread->machine.kstackptr); + if (!thread->kernel_stack) { + load_context_kprintf("calling stack_alloc_try\n"); + if (!stack_alloc_try(thread)) + panic("load_context"); + } + + /* + * The idle processor threads are not counted as + * running for load calculations. + */ + if (!(thread->state & TH_IDLE)) + sched_run_incr(); - thread_lock(thread); - thread->state &= ~TH_UNINT; - thread->last_processor = processor; processor->active_thread = thread; processor->current_pri = thread->sched_pri; - _mk_sp_thread_begin(thread, processor); - thread_unlock(thread); - timer_switch(&thread->system_timer); + processor->deadline = UINT64_MAX; + thread->last_processor = processor; + + processor->last_dispatch = mach_absolute_time(); + timer_start(&thread->system_timer, processor->last_dispatch); + PROCESSOR_DATA(processor, thread_timer) = PROCESSOR_DATA(processor, kernel_timer) = &thread->system_timer; + + timer_start(&PROCESSOR_DATA(processor, system_state), processor->last_dispatch); + PROCESSOR_DATA(processor, current_state) = &PROCESSOR_DATA(processor, system_state); - PMAP_ACTIVATE_USER(thread->top_act, mycpu); + PMAP_ACTIVATE_USER(thread, PROCESSOR_DATA(processor, slot_num)); - /* preemption enabled by load_context */ + load_context_kprintf("calling machine_load_context\n"); machine_load_context(thread); /*NOTREACHED*/ }