/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @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
* 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,
* 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) 1991,1990,1989,1988,1987 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.
*/
*/
#include <mach/machine/vm_types.h>
-#include <kern/zalloc.h>
-#include <kern/kalloc.h>
+#include <mach/vm_map.h>
+#include <kern/startup.h>
+#include <kern/zalloc_internal.h>
+#include <kern/kext_alloc.h>
+#include <sys/kdebug.h>
#include <vm/vm_object.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
#include <vm/vm_protos.h>
-#define ZONE_MAP_MIN (12 * 1024 * 1024)
-#define ZONE_MAP_MAX (768 * 1024 * 1024)
+const vm_offset_t vm_min_kernel_address = VM_MIN_KERNEL_AND_KEXT_ADDRESS;
+const vm_offset_t vm_max_kernel_address = VM_MAX_KERNEL_ADDRESS;
+
+TUNABLE(bool, iokit_iomd_setownership_enabled,
+ "iokit_iomd_setownership_enabled", true);
+
+static inline void
+vm_mem_bootstrap_log(const char *message)
+{
+// kprintf("vm_mem_bootstrap: %s\n", message);
+ kernel_debug_string_early(message);
+}
/*
* vm_mem_bootstrap initializes the virtual memory system.
* This is done only by the first cpu up.
*/
-
+__startup_func
void
vm_mem_bootstrap(void)
{
- vm_offset_t start, end;
- vm_size_t zsize;
+ vm_offset_t start, end, kmapoff_kaddr;
/*
* Initializes resident memory structures.
* From here on, all physical memory is accounted for,
* and we use only virtual addresses.
*/
-
+ vm_mem_bootstrap_log("vm_page_bootstrap");
vm_page_bootstrap(&start, &end);
/*
* Initialize other VM packages
*/
+ vm_mem_bootstrap_log("zone_bootstrap");
zone_bootstrap();
+
+ vm_mem_bootstrap_log("vm_object_bootstrap");
vm_object_bootstrap();
+
+ vm_retire_boot_pages();
+
+ kernel_startup_initialize_upto(STARTUP_SUB_VM_KERNEL);
+
+ vm_mem_bootstrap_log("vm_map_init");
vm_map_init();
+
+ vm_mem_bootstrap_log("kmem_init");
kmem_init(start, end);
- pmap_init();
-
- if (PE_parse_boot_arg("zsize", &zsize))
- zsize = zsize * 1024 * 1024;
- else {
- zsize = sane_size >> 2; /* Get target zone size as 1/4 of physical memory */
+
+ kernel_startup_initialize_upto(STARTUP_SUB_KMEM);
+
+ /*
+ * Eat a random amount of kernel_map to fuzz subsequent heap, zone and
+ * stack addresses. (With a 4K page and 9 bits of randomness, this
+ * eats about 2M of VA from the map)
+ *
+ * Note that we always need to slide by at least one page because the VM
+ * pointer packing schemes using KERNEL_PMAP_HEAP_RANGE_START as a base
+ * do not admit this address to be part of any zone submap.
+ */
+ uint32_t kmapoff_pgcnt = (early_random() & 0x1ff) + 1; /* 9 bits */
+ if (kernel_memory_allocate(kernel_map, &kmapoff_kaddr,
+ ptoa(kmapoff_pgcnt), 0, KMA_KOBJECT | KMA_PERMANENT | KMA_VAONLY,
+ VM_KERN_MEMORY_OSFMK) != KERN_SUCCESS) {
+ panic("cannot kernel_memory_allocate %u pages", kmapoff_pgcnt);
}
- if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN; /* Clamp to min */
- if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX; /* Clamp to max */
- zone_init(zsize); /* Allocate address space for zones */
-
- kalloc_init();
+ vm_mem_bootstrap_log("pmap_init");
+ pmap_init();
+
+ kernel_startup_initialize_upto(STARTUP_SUB_KMEM_ALLOC);
+
+ vm_mem_bootstrap_log("vm_fault_init");
vm_fault_init();
- vm_page_module_init();
- memory_manager_default_init();
- memory_object_control_bootstrap();
- device_pager_bootstrap();
-}
-void
-vm_mem_init(void)
-{
- vm_object_init();
+ vm_mem_bootstrap_log("kext_alloc_init");
+ kext_alloc_init();
+
+ kernel_startup_initialize_upto(STARTUP_SUB_ZALLOC);
+
+ vm_paging_map_init();
+
+ vm_page_delayed_work_init_ctx();
+
+ if (iokit_iomd_setownership_enabled) {
+ kprintf("IOKit IOMD setownership ENABLED\n");
+ } else {
+ kprintf("IOKit IOMD setownership DISABLED\n");
+ }
}
projects / apple / xnu.git / blobdiff