/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
- * @APPLE_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 Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * 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.
+ *
+ * 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
-/*
+/*
* 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.
*/
+/*
+ * 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.
+ */
/*
*/
*/
#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/assert.h>
+#include <kern/mach_param.h>
#include <kern/misc_protos.h>
#include <kern/clock.h>
+#include <kern/coalition.h>
#include <kern/cpu_number.h>
-#include <kern/etap_macros.h>
+#include <kern/cpu_quiesce.h>
+#include <kern/ledger.h>
#include <kern/machine.h>
#include <kern/processor.h>
+#include <kern/restartable.h>
#include <kern/sched_prim.h>
-#include <kern/sf.h>
+#include <kern/turnstile.h>
+#if CONFIG_SCHED_SFI
+#include <kern/sfi.h>
+#endif
#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>
+#if CONFIG_TELEMETRY
+#include <kern/telemetry.h>
+#endif
#include <kern/zalloc.h>
+#include <kern/locks.h>
+#include <kern/debug.h>
+#if KPERF
+#include <kperf/kperf.h>
+#endif /* KPERF */
+#include <corpses/task_corpse.h>
+#include <prng/random.h>
+#include <console/serial_protos.h>
#include <vm/vm_kern.h>
#include <vm/vm_init.h>
#include <vm/vm_map.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
+#include <vm/vm_shared_region.h>
#include <machine/pmap.h>
-#include <sys/version.h>
+#include <machine/commpage.h>
+#include <machine/machine_routines.h>
+#include <libkern/version.h>
+#include <sys/codesign.h>
+#include <sys/kdebug.h>
+#include <sys/random.h>
+#include <sys/ktrace.h>
+#include <libkern/section_keywords.h>
+
+#include <kern/ltable.h>
+#include <kern/waitq.h>
+#include <ipc/ipc_voucher.h>
+#include <voucher/ipc_pthread_priority_internal.h>
+#include <mach/host_info.h>
+#include <pthread/workqueue_internal.h>
+
+#if CONFIG_XNUPOST
+#include <tests/ktest.h>
+#include <tests/xnupost.h>
+#endif
-#ifdef __ppc__
-#include <ppc/Firmware.h>
-#include <ppc/mappings.h>
+#if CONFIG_ATM
+#include <atm/atm_internal.h>
#endif
-/* Externs XXX */
-extern void rtclock_reset(void);
+#if CONFIG_CSR
+#include <sys/csr.h>
+#endif
-/* Forwards */
-void cpu_launch_first_thread(
- thread_t thread);
-void start_kernel_threads(void);
-void swapin_thread();
+#include <bank/bank_internal.h>
+
+#if ALTERNATE_DEBUGGER
+#include <arm64/alternate_debugger.h>
+#endif
+
+#if MACH_KDP
+#include <kdp/kdp.h>
+#endif
+
+#if CONFIG_MACF
+#include <security/mac_mach_internal.h>
+#if CONFIG_VNGUARD
+extern void vnguard_policy_init(void);
+#endif
+#endif
+
+#if KPC
+#include <kern/kpc.h>
+#endif
+
+#if HYPERVISOR
+#include <kern/hv_support.h>
+#endif
+
+#include <san/kasan.h>
+
+#include <i386/pmCPU.h>
+static void kernel_bootstrap_thread(void);
+
+static void load_context(
+ thread_t thread);
+
+#if CONFIG_ECC_LOGGING
+#include <kern/ecc.h>
+#endif
+
+#if (defined(__i386__) || defined(__x86_64__)) && CONFIG_VMX
+#include <i386/vmx/vmx_cpu.h>
+#endif
+
+#if CONFIG_DTRACE
+extern void dtrace_early_init(void);
+extern void sdt_early_init(void);
+#endif
+
+// libkern/OSKextLib.cpp
+extern void OSKextRemoveKextBootstrap(void);
+
+void scale_setup(void);
+extern void bsd_scale_setup(int);
+extern unsigned int semaphore_max;
+extern void stackshot_init(void);
/*
* Running in virtual memory, on the interrupt stack.
- * Does not return. Dispatches initial thread.
- *
- * Assumes that master_cpu is set.
*/
+
+extern struct startup_entry startup_entries[]
+__SECTION_START_SYM(STARTUP_HOOK_SEGMENT, STARTUP_HOOK_SECTION);
+
+extern struct startup_entry startup_entries_end[]
+__SECTION_END_SYM(STARTUP_HOOK_SEGMENT, STARTUP_HOOK_SECTION);
+
+static struct startup_entry *__startup_data startup_entry_cur = startup_entries;
+
+SECURITY_READ_ONLY_LATE(startup_subsystem_id_t) startup_phase = STARTUP_SUB_NONE;
+
+extern int serverperfmode;
+
+#if DEBUG || DEVELOPMENT
+TUNABLE(startup_debug_t, startup_debug, "startup_debug", 0);
+#endif
+
+/* size of kernel trace buffer, disabled by default */
+TUNABLE(unsigned int, new_nkdbufs, "trace", 0);
+TUNABLE(unsigned int, wake_nkdbufs, "trace_wake", 0);
+TUNABLE(unsigned int, write_trace_on_panic, "trace_panic", 0);
+TUNABLE(unsigned int, trace_wrap, "trace_wrap", 0);
+
+/* mach leak logging */
+TUNABLE(int, log_leaks, "-l", 0);
+
+static inline void
+kernel_bootstrap_log(const char *message)
+{
+ if ((startup_debug & STARTUP_DEBUG_VERBOSE) &&
+ startup_phase >= STARTUP_SUB_KPRINTF) {
+ kprintf("kernel_bootstrap: %s\n", message);
+ }
+ kernel_debug_string_early(message);
+}
+
+static inline void
+kernel_bootstrap_thread_log(const char *message)
+{
+ if ((startup_debug & STARTUP_DEBUG_VERBOSE) &&
+ startup_phase >= STARTUP_SUB_KPRINTF) {
+ kprintf("kernel_bootstrap_thread: %s\n", message);
+ }
+ kernel_debug_string_early(message);
+}
+
+extern void
+qsort(void *a, size_t n, size_t es, int (*cmp)(const void *, const void *));
+
+__startup_func
+static int
+startup_entry_cmp(const void *e1, const void *e2)
+{
+ const struct startup_entry *a = e1;
+ const struct startup_entry *b = e2;
+ if (a->subsystem == b->subsystem) {
+ if (a->rank == b->rank) {
+ return 0;
+ }
+ return a->rank > b->rank ? 1 : -1;
+ }
+ return a->subsystem > b->subsystem ? 1 : -1;
+}
+
+__startup_func
void
-setup_main(void)
+kernel_startup_bootstrap(void)
{
- thread_t startup_thread;
+ /*
+ * Sort the various STARTUP() entries by subsystem/rank.
+ */
+ size_t n = startup_entries_end - startup_entries;
- sched_init();
+ if (n == 0) {
+ panic("Section %s,%s missing",
+ STARTUP_HOOK_SEGMENT, STARTUP_HOOK_SECTION);
+ }
+ if (((uintptr_t)startup_entries_end - (uintptr_t)startup_entries) %
+ sizeof(struct startup_entry)) {
+ panic("Section %s,%s has invalid size",
+ STARTUP_HOOK_SEGMENT, STARTUP_HOOK_SECTION);
+ }
+
+ qsort(startup_entries, n, sizeof(struct startup_entry), startup_entry_cmp);
+
+ /*
+ * Then initialize all tunables, and early locks
+ */
+ kernel_startup_initialize_upto(STARTUP_SUB_LOCKS_EARLY);
+}
+
+__startup_func
+extern void
+kernel_startup_tunable_init(const struct startup_tunable_spec *spec)
+{
+ if (PE_parse_boot_argn(spec->name, spec->var_addr, spec->var_len)) {
+ if (spec->var_is_bool) {
+ /* make sure bool's are valued in {0, 1} */
+ *(bool *)spec->var_addr = *(uint8_t *)spec->var_addr;
+ }
+ }
+}
+
+static void
+kernel_startup_log(startup_subsystem_id_t subsystem)
+{
+ static const char *names[] = {
+ [STARTUP_SUB_TUNABLES] = "tunables",
+ [STARTUP_SUB_LOCKS_EARLY] = "locks_early",
+ [STARTUP_SUB_KPRINTF] = "kprintf",
+
+ [STARTUP_SUB_PMAP_STEAL] = "pmap_steal",
+ [STARTUP_SUB_VM_KERNEL] = "vm_kernel",
+ [STARTUP_SUB_KMEM] = "kmem",
+ [STARTUP_SUB_KMEM_ALLOC] = "kmem_alloc",
+ [STARTUP_SUB_ZALLOC] = "zalloc",
+ [STARTUP_SUB_PERCPU] = "percpu",
+ [STARTUP_SUB_LOCKS] = "locks",
+
+ [STARTUP_SUB_CODESIGNING] = "codesigning",
+ [STARTUP_SUB_OSLOG] = "oslog",
+ [STARTUP_SUB_MACH_IPC] = "mach_ipc",
+ [STARTUP_SUB_SYSCTL] = "sysctl",
+ [STARTUP_SUB_EARLY_BOOT] = "early_boot",
+
+ /* LOCKDOWN is special and its value won't fit here. */
+ };
+ static startup_subsystem_id_t logged = STARTUP_SUB_NONE;
+
+ if (subsystem <= logged) {
+ return;
+ }
+
+ if (subsystem < sizeof(names) / sizeof(names[0]) && names[subsystem]) {
+ kernel_bootstrap_log(names[subsystem]);
+ }
+ logged = subsystem;
+}
+
+__startup_func
+void
+kernel_startup_initialize_upto(startup_subsystem_id_t upto)
+{
+ struct startup_entry *cur = startup_entry_cur;
+
+ assert(startup_phase < upto);
+
+ while (cur < startup_entries_end && cur->subsystem <= upto) {
+ if ((startup_debug & STARTUP_DEBUG_VERBOSE) &&
+ startup_phase >= STARTUP_SUB_KPRINTF) {
+ kprintf("%s[%d, rank %d]: %p(%p)\n", __func__,
+ cur->subsystem, cur->rank, cur->func, cur->arg);
+ }
+ startup_phase = cur->subsystem - 1;
+ kernel_startup_log(cur->subsystem);
+ cur->func(cur->arg);
+ startup_entry_cur = ++cur;
+ }
+ kernel_startup_log(upto);
+
+ if ((startup_debug & STARTUP_DEBUG_VERBOSE) &&
+ upto >= STARTUP_SUB_KPRINTF) {
+ kprintf("%s: reached phase %d\n", __func__, upto);
+ }
+ startup_phase = upto;
+}
+
+void
+kernel_bootstrap(void)
+{
+ kern_return_t result;
+ thread_t thread;
+ char namep[16];
+
+ printf("%s\n", version); /* log kernel version */
+
+ scale_setup();
+
+ kernel_bootstrap_log("vm_mem_bootstrap");
vm_mem_bootstrap();
- ipc_bootstrap();
- vm_mem_init();
- ipc_init();
- pager_mux_hash_init();
+
+ machine_info.memory_size = (uint32_t)mem_size;
+#if XNU_TARGET_OS_OSX
+ machine_info.max_mem = max_mem_actual;
+#else
+ machine_info.max_mem = max_mem;
+#endif /* XNU_TARGET_OS_OSX */
+ machine_info.major_version = version_major;
+ machine_info.minor_version = version_minor;
+
+ kernel_startup_initialize_upto(STARTUP_SUB_OSLOG);
+
+#if KASAN
+ kernel_bootstrap_log("kasan_late_init");
+ kasan_late_init();
+#endif
+
+#if CONFIG_TELEMETRY
+ kernel_bootstrap_log("telemetry_init");
+ telemetry_init();
+#endif
+
+ if (PE_i_can_has_debugger(NULL)) {
+ if (PE_parse_boot_argn("-show_pointers", &namep, sizeof(namep))) {
+ doprnt_hide_pointers = FALSE;
+ }
+ if (PE_parse_boot_argn("-no_slto_panic", &namep, sizeof(namep))) {
+ extern boolean_t spinlock_timeout_panic;
+ spinlock_timeout_panic = FALSE;
+ }
+ }
+
+ kernel_bootstrap_log("console_init");
+ console_init();
+
+ kernel_bootstrap_log("stackshot_init");
+ stackshot_init();
+
+ kernel_bootstrap_log("sched_init");
+ sched_init();
+
+ kernel_bootstrap_log("waitq_bootstrap");
+ waitq_bootstrap();
+
+#if CONFIG_MACF
+ kernel_bootstrap_log("mac_policy_init");
+ mac_policy_init();
+#endif
+
+ kernel_startup_initialize_upto(STARTUP_SUB_MACH_IPC);
/*
* As soon as the virtual memory system is up, we record
* that this CPU is using the kernel pmap.
*/
+ kernel_bootstrap_log("PMAP_ACTIVATE_KERNEL");
PMAP_ACTIVATE_KERNEL(master_cpu);
-#ifdef __ppc__
- mapping_free_prime(); /* Load up with temporary mapping blocks */
-#endif
+ kernel_bootstrap_log("mapping_free_prime");
+ mapping_free_prime(); /* Load up with temporary mapping blocks */
+ kernel_bootstrap_log("machine_init");
machine_init();
- kmod_init();
- clock_init();
- init_timers();
- timer_call_initialize();
+ kernel_bootstrap_log("thread_machine_init_template");
+ thread_machine_init_template();
- 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;
+ kernel_bootstrap_log("clock_init");
+ clock_init();
/*
* Initialize the IPC, task, and thread subsystems.
*/
- ledger_init();
- swapper_init();
+#if CONFIG_THREAD_GROUPS
+ kernel_bootstrap_log("thread_group_init");
+ thread_group_init();
+#endif
+
+#if CONFIG_COALITIONS
+ kernel_bootstrap_log("coalitions_init");
+ coalitions_init();
+#endif
+
+ kernel_bootstrap_log("task_init");
task_init();
- act_init();
+
+ kernel_bootstrap_log("thread_init");
thread_init();
- subsystem_init();
+
+ kernel_bootstrap_log("restartable_init");
+ restartable_init();
+
+ kernel_bootstrap_log("workq_init");
+ workq_init();
+
+ kernel_bootstrap_log("turnstiles_init");
+ turnstiles_init();
+
+#if CONFIG_ATM
+ /* Initialize the Activity Trace Resource Manager. */
+ kernel_bootstrap_log("atm_init");
+ atm_init();
+#endif
+ kernel_bootstrap_log("mach_init_activity_id");
+ mach_init_activity_id();
+
+ /* Initialize the BANK Manager. */
+ kernel_bootstrap_log("bank_init");
+ bank_init();
+
+ kernel_bootstrap_log("ipc_pthread_priority_init");
+ ipc_pthread_priority_init();
+
+ /* initialize the corpse config based on boot-args */
+ corpses_init();
+
+ /* initialize host_statistics */
+ host_statistics_init();
+
+ /* initialize exceptions */
+ kernel_bootstrap_log("exception_init");
+ exception_init();
+
+#if CONFIG_SCHED_SFI
+ kernel_bootstrap_log("sfi_init");
+ sfi_init();
+#endif
/*
- * 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.
- */
- startup_thread = kernel_thread_with_priority(kernel_task, MAXPRI_KERNBAND,
- start_kernel_threads, 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.
+ * Create a kernel thread to execute the kernel bootstrap.
*/
- cpu_launch_first_thread(startup_thread);
+
+ kernel_bootstrap_log("kernel_thread_create");
+ result = kernel_thread_create((thread_continue_t)kernel_bootstrap_thread, NULL, MAXPRI_KERNEL, &thread);
+
+ if (result != KERN_SUCCESS) {
+ panic("kernel_bootstrap: result = %08X\n", result);
+ }
+
+ /* The static init_thread is re-used as the bootstrap thread */
+ assert(thread == current_thread());
+
+ /* TODO: do a proper thread_start() (without the thread_setrun()) */
+ thread->state = TH_RUN;
+ thread->last_made_runnable_time = mach_absolute_time();
+ thread_set_thread_name(thread, "kernel_bootstrap_thread");
+
+ thread_deallocate(thread);
+
+ kernel_bootstrap_log("load_context - done");
+ load_context(thread);
/*NOTREACHED*/
- panic("cpu_launch_first_thread returns!");
}
+SECURITY_READ_ONLY_LATE(vm_offset_t) vm_kernel_addrperm;
+SECURITY_READ_ONLY_LATE(vm_offset_t) buf_kernel_addrperm;
+SECURITY_READ_ONLY_LATE(vm_offset_t) vm_kernel_addrperm_ext;
+SECURITY_READ_ONLY_LATE(uint64_t) vm_kernel_addrhash_salt;
+SECURITY_READ_ONLY_LATE(uint64_t) vm_kernel_addrhash_salt_ext;
+
/*
- * 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;
+ processor_t processor = current_processor();
- thread_bind(current_thread(), cpu_to_processor(cpu_number()));
+ kernel_bootstrap_thread_log("idle_thread_create");
+ /*
+ * Create the idle processor thread.
+ */
+ idle_thread_create(processor);
/*
- * Create the idle threads and the other
- * service threads.
+ * N.B. Do not stick anything else
+ * before this point.
+ *
+ * Start up the scheduler services.
*/
- for (i = 0; i < NCPUS; i++) {
- if (1 /*machine_slot[i].is_cpu*/) {
- processor_t processor = cpu_to_processor(i);
- thread_t thread;
- spl_t s;
-
- thread = kernel_thread_with_priority(kernel_task,
- MAXPRI_KERNBAND, idle_thread, FALSE);
- s = splsched();
- thread_lock(thread);
- thread_bind_locked(thread, processor);
- processor->idle_thread = thread;
- thread->state |= TH_IDLE;
- thread_go_locked(thread, THREAD_AWAKENED);
- thread_unlock(thread);
- splx(s);
- }
- }
+ kernel_bootstrap_thread_log("sched_startup");
+ sched_startup();
+
+ /*
+ * Thread lifecycle maintenance (teardown, stack allocation)
+ */
+ kernel_bootstrap_thread_log("thread_daemon_init");
+ thread_daemon_init();
+
+ /* Create kernel map entry reserve */
+ vm_kernel_reserved_entry_init();
/*
- * Initialize the thread callout mechanism.
+ * Thread callout service.
*/
+ kernel_bootstrap_thread_log("thread_call_initialize");
thread_call_initialize();
/*
- * Invoke some black magic.
+ * Work interval subsystem initialization.
+ * Needs to be done once thread calls have been initialized.
*/
-#if __ppc__
- mapping_adjust();
-#endif
+ kernel_bootstrap_thread_log("work_interval_initialize");
+ work_interval_subsystem_init();
/*
- * Invoke the thread reaper mechanism.
+ * Remain on current processor as
+ * additional processors come online.
*/
- thread_reaper();
+ kernel_bootstrap_thread_log("thread_bind");
+ thread_bind(processor);
/*
- * Start the stack swapin thread
+ * Initialize ipc thread call support.
*/
- kernel_thread(kernel_task, swapin_thread);
+ kernel_bootstrap_thread_log("ipc_thread_call_init");
+ ipc_thread_call_init();
/*
- * Invoke the periodic scheduler mechanism.
+ * Kick off memory mapping adjustments.
*/
- kernel_thread(kernel_task, sched_tick_thread);
+ kernel_bootstrap_thread_log("mapping_adjust");
+ mapping_adjust();
/*
* Create the clock service.
*/
+ kernel_bootstrap_thread_log("clock_service_create");
clock_service_create();
/*
*/
device_service_create();
- shared_file_boot_time_init();
+ phys_carveout_init();
+
+#if MACH_KDP
+ kernel_bootstrap_log("kdp_init");
+ kdp_init();
+#endif
+
+#if ALTERNATE_DEBUGGER
+ alternate_debugger_init();
+#endif
+
+#if KPC
+ kpc_init();
+#endif
+
+#if HYPERVISOR
+ kernel_bootstrap_thread_log("hv_support_init");
+ hv_support_init();
+#endif
+
+#if CONFIG_TELEMETRY
+ kernel_bootstrap_log("bootprofile_init");
+ bootprofile_init();
+#endif
+
+ char trace_typefilter[256] = {};
+ PE_parse_boot_arg_str("trace_typefilter", trace_typefilter,
+ sizeof(trace_typefilter));
+#if KPERF
+ kperf_init();
+#endif /* KPERF */
+ kdebug_init(new_nkdbufs, trace_typefilter,
+ (trace_wrap ? KDOPT_WRAPPING : 0) | KDOPT_ATBOOT);
+
+ kernel_startup_initialize_upto(STARTUP_SUB_SYSCTL);
+
+#ifdef IOKIT
+ kernel_bootstrap_log("PE_init_iokit");
+ PE_init_iokit();
+#endif
+
+ assert(ml_get_interrupts_enabled() == FALSE);
+
+ /*
+ * Past this point, kernel subsystems that expect to operate with
+ * interrupts or preemption enabled may begin enforcement.
+ */
+ kernel_startup_initialize_upto(STARTUP_SUB_EARLY_BOOT);
+
+#if INTERRUPT_MASKED_DEBUG
+ // Reset interrupts masked timeout before we enable interrupts
+ ml_spin_debug_clear_self();
+#endif
+ (void) spllo(); /* Allow interruptions */
+
+ /*
+ * This will start displaying progress to the user, start as early as possible
+ */
+ initialize_screen(NULL, kPEAcquireScreen);
+
+ /*
+ * Initialize the shared region module.
+ */
+ vm_commpage_init();
+ vm_commpage_text_init();
+
+#if CONFIG_MACF
+ kernel_bootstrap_log("mac_policy_initmach");
+ mac_policy_initmach();
+#if CONFIG_VNGUARD
+ kernel_bootstrap_log("vnguard_policy_init");
+ vnguard_policy_init();
+#endif
+#endif
+
+#if CONFIG_DTRACE
+ kernel_bootstrap_log("dtrace_early_init");
+ dtrace_early_init();
+ sdt_early_init();
+#endif
+
+#ifndef BCM2837
+ kernel_bootstrap_log("trust_cache_init");
+ trust_cache_init();
+#endif
+
+ kernel_startup_initialize_upto(STARTUP_SUB_LOCKDOWN);
+
+ /*
+ * Get rid of segments used to bootstrap kext loading. This removes
+ * the KLD, PRELINK symtab, LINKEDIT, and symtab segments/load commands.
+ * Must be done prior to lockdown so that we can free (and possibly relocate)
+ * the static KVA mappings used for the jettisoned bootstrap segments.
+ */
+ kernel_bootstrap_log("OSKextRemoveKextBootstrap");
+ OSKextRemoveKextBootstrap();
+
+ /*
+ * Initialize the globals used for permuting kernel
+ * addresses that may be exported to userland as tokens
+ * using VM_KERNEL_ADDRPERM()/VM_KERNEL_ADDRPERM_EXTERNAL().
+ * Force the random number to be odd to avoid mapping a non-zero
+ * word-aligned address to zero via addition.
+ * Note: at this stage we can use the cryptographically secure PRNG
+ * rather than early_random().
+ */
+ read_random(&vm_kernel_addrperm, sizeof(vm_kernel_addrperm));
+ vm_kernel_addrperm |= 1;
+ read_random(&buf_kernel_addrperm, sizeof(buf_kernel_addrperm));
+ buf_kernel_addrperm |= 1;
+ read_random(&vm_kernel_addrperm_ext, sizeof(vm_kernel_addrperm_ext));
+ vm_kernel_addrperm_ext |= 1;
+ read_random(&vm_kernel_addrhash_salt, sizeof(vm_kernel_addrhash_salt));
+ read_random(&vm_kernel_addrhash_salt_ext, sizeof(vm_kernel_addrhash_salt_ext));
+
+ /* No changes to kernel text and rodata beyond this point. */
+ kernel_bootstrap_log("machine_lockdown");
+ machine_lockdown();
+
+#ifdef IOKIT
+ kernel_bootstrap_log("PE_lockdown_iokit");
+ PE_lockdown_iokit();
+#endif
+ /*
+ * max_cpus must be nailed down by the time PE_lockdown_iokit() finishes,
+ * at the latest
+ */
+ vm_set_restrictions(machine_info.max_cpus);
-#ifdef IOKIT
- {
- PE_init_iokit();
+#ifdef CONFIG_XNUPOST
+ kern_return_t result = kernel_list_tests();
+ result = kernel_do_post();
+ if (result != KERN_SUCCESS) {
+ panic("kernel_do_post: Tests failed with result = 0x%08x\n", result);
}
+ kernel_bootstrap_log("kernel_do_post - done");
+#endif /* CONFIG_XNUPOST */
+
+
+#if KPERF
+ kperf_init_early();
#endif
/*
* Start the user bootstrap.
*/
-
- (void) spllo(); /* Allow interruptions */
-
-#ifdef MACH_BSD
- {
- extern void bsd_init(void);
- bsd_init();
- }
+#ifdef MACH_BSD
+ bsd_init();
#endif
- thread_bind(current_thread(), PROCESSOR_NULL);
/*
- * Become the pageout daemon.
+ * Get rid of pages used for early boot tracing.
+ */
+ kdebug_free_early_buf();
+
+ serial_keyboard_init(); /* Start serial keyboard if wanted */
+
+ vm_page_init_local_q(machine_info.max_cpus);
+
+ thread_bind(PROCESSOR_NULL);
+
+ /*
+ * Now that all CPUs are available to run threads, this is essentially
+ * a background thread. Take this opportunity to initialize and free
+ * any remaining vm_pages that were delayed earlier by pmap_startup().
*/
+ vm_free_delayed_pages();
+ /*
+ * Become the pageout daemon.
+ */
vm_pageout();
/*NOTREACHED*/
}
+/*
+ * slave_main:
+ *
+ * Load the first thread to start a processor.
+ * This path will also be used by the master processor
+ * after being offlined.
+ */
void
-slave_main(void)
+slave_main(void *machine_param)
{
- processor_t myprocessor = 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;
+ processor_t processor = current_processor();
+ thread_t thread;
+
+ /*
+ * Use the idle processor thread if there
+ * is no dedicated start up thread.
+ */
+ if (processor->processor_offlined == true) {
+ /* Return to the saved processor_offline context */
+ assert(processor->startup_thread == THREAD_NULL);
+
+ thread = processor->idle_thread;
+ thread->parameter = machine_param;
+ } else if (processor->startup_thread) {
+ thread = processor->startup_thread;
+ processor->startup_thread = THREAD_NULL;
+ } else {
+ thread = processor->idle_thread;
+ thread->continuation = processor_start_thread;
+ thread->parameter = machine_param;
}
- 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 *machine_param,
+ __unused wait_result_t result)
{
- processor_t processor;
-
- processor = cpu_to_processor(cpu_number());
+ processor_t processor = current_processor();
+ thread_t self = current_thread();
- slave_machine_init();
+ slave_machine_init(machine_param);
- 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(idle_thread);
}
-#if 0
- printf("start_cpu_thread done on cpu %x\n", cpu_number());
-#endif
- /* TODO: Mark this processor ready to dispatch threads */
-
- (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.
+ * This may be the first thread ever run on a processor, or
+ * it could be a processor that was previously offlined.
*/
-void
-cpu_launch_first_thread(
- thread_t thread)
+static void __attribute__((noreturn))
+load_context(
+ thread_t thread)
{
- register int mycpu = cpu_number();
+ processor_t processor = current_processor();
+
- /* initialize preemption disabled */
- cpu_data[mycpu].preemption_level = 1;
+#define load_context_kprintf(x...) /* kprintf("load_context: " x) */
- cpu_up(mycpu);
- start_timer(&kernel_timer[mycpu]);
+ load_context_kprintf("machine_set_current_thread\n");
+ machine_set_current_thread(thread);
+
+ load_context_kprintf("processor_up\n");
+
+ PMAP_ACTIVATE_KERNEL(processor->cpu_id);
+
+ /*
+ * Acquire a stack if none attached. The panic
+ * should never occur since the thread is expected
+ * to have reserved stack.
+ */
+ load_context_kprintf("thread %p, stack %lx, stackptr %lx\n", thread,
+ thread->kernel_stack, thread->machine.kstackptr);
+ if (!thread->kernel_stack) {
+ load_context_kprintf("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_count_incr)(thread);
+ }
- if (thread == THREAD_NULL) {
- thread = cpu_to_processor(mycpu)->idle_thread;
- if (thread == THREAD_NULL)
- panic("cpu_launch_first_thread");
+ processor->active_thread = thread;
+ processor_state_update_explicit(processor, thread->sched_pri,
+ SFI_CLASS_KERNEL, PSET_SMP, thread_get_perfcontrol_class(thread), THREAD_URGENCY_NONE,
+ ((thread->state & TH_IDLE) || (thread->bound_processor != PROCESSOR_NULL)) ? TH_BUCKET_SCHED_MAX : thread->th_sched_bucket);
+ processor->current_is_bound = thread->bound_processor != PROCESSOR_NULL;
+ processor->current_is_NO_SMT = false;
+ processor->current_is_eagerpreempt = false;
+#if CONFIG_THREAD_GROUPS
+ processor->current_thread_group = thread_group_get(thread);
+#endif
+ processor->starting_pri = thread->sched_pri;
+ processor->deadline = UINT64_MAX;
+ thread->last_processor = processor;
+ processor_up(processor);
+ processor->last_dispatch = mach_absolute_time();
+ timer_start(&thread->system_timer, processor->last_dispatch);
+ processor->thread_timer = processor->kernel_timer = &thread->system_timer;
+
+ timer_start(&processor->system_state, processor->last_dispatch);
+ processor->current_state = &processor->system_state;
+
+#if __AMP__
+ if (processor->processor_set->pset_cluster_type == PSET_AMP_P) {
+ timer_start(&thread->ptime, processor->last_dispatch);
}
+#endif
- rtclock_reset(); /* start realtime clock ticking */
- PMAP_ACTIVATE_KERNEL(mycpu);
+ cpu_quiescent_counter_join(processor->last_dispatch);
- thread_machine_set_current(thread);
- thread_lock(thread);
- thread->state &= ~TH_UNINT;
- thread_unlock(thread);
- timer_switch(&thread->system_timer);
+ PMAP_ACTIVATE_USER(thread, processor->cpu_id);
- PMAP_ACTIVATE_USER(thread->top_act, mycpu);
+ load_context_kprintf("machine_load_context\n");
- /* preemption enabled by load_context */
- load_context(thread);
+ machine_load_context(thread);
/*NOTREACHED*/
}
+
+void
+scale_setup(void)
+{
+ int scale = 0;
+#if defined(__LP64__)
+ typeof(task_max) task_max_base = task_max;
+
+ /* Raise limits for servers with >= 16G */
+ if ((serverperfmode != 0) && ((uint64_t)max_mem_actual >= (uint64_t)(16 * 1024 * 1024 * 1024ULL))) {
+ scale = (int)((uint64_t)sane_size / (uint64_t)(8 * 1024 * 1024 * 1024ULL));
+ /* limit to 128 G */
+ if (scale > 16) {
+ scale = 16;
+ }
+ task_max_base = 2500;
+ /* Raise limits for machines with >= 3GB */
+ } else if ((uint64_t)max_mem_actual >= (uint64_t)(3 * 1024 * 1024 * 1024ULL)) {
+ if ((uint64_t)max_mem_actual < (uint64_t)(8 * 1024 * 1024 * 1024ULL)) {
+ scale = 2;
+ } else {
+ /* limit to 64GB */
+ scale = MIN(16, (int)((uint64_t)max_mem_actual / (uint64_t)(4 * 1024 * 1024 * 1024ULL)));
+ }
+ }
+
+ task_max = MAX(task_max, task_max_base * scale);
+
+ if (scale != 0) {
+ task_threadmax = task_max;
+ thread_max = task_max * 5;
+ }
+
+#endif
+
+ bsd_scale_setup(scale);
+}
projects / apple / xnu.git / blobdiff