--- /dev/null
+/*
+ * Copyright (c) 2007 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
+ * 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, 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@
+ */
+/*
+ * FILE_ID: vm_param.h
+ */
+
+/*
+ * ARM machine dependent virtual memory parameters.
+ */
+
+#ifndef _MACH_ARM_VM_PARAM_H_
+#define _MACH_ARM_VM_PARAM_H_
+
+#if defined(KERNEL_PRIVATE) && __ARM_16K_PG__
+#include <arm64/proc_reg.h>
+#endif
+
+#if !defined (KERNEL) && !defined (__ASSEMBLER__)
+#include <mach/vm_page_size.h>
+#endif
+
+#define BYTE_SIZE 8 /* byte size in bits */
+
+#if defined (KERNEL)
+
+#ifndef __ASSEMBLER__
+
+#ifdef __arm__
+#define PAGE_SHIFT_CONST 12
+#elif defined(__arm64__)
+extern unsigned PAGE_SHIFT_CONST;
+#else
+#error Unsupported arch
+#endif
+
+#if defined(KERNEL_PRIVATE) && __ARM_16K_PG__
+#define PAGE_SHIFT ARM_PGSHIFT
+#else
+#define PAGE_SHIFT PAGE_SHIFT_CONST
+#endif
+#define PAGE_SIZE (1 << PAGE_SHIFT)
+#define PAGE_MASK (PAGE_SIZE-1)
+
+#define VM_PAGE_SIZE PAGE_SIZE
+
+#define machine_ptob(x) ((x) << PAGE_SHIFT)
+
+/*
+ * Defined for the purpose of testing the pmap advertised page
+ * size; this does not necessarily match the hardware page size.
+ */
+#define TEST_PAGE_SIZE_16K ((PAGE_SHIFT_CONST == 14))
+#define TEST_PAGE_SIZE_4K ((PAGE_SHIFT_CONST == 12))
+
+#endif /* !__ASSEMBLER__ */
+
+#else
+
+#define PAGE_SHIFT vm_page_shift
+#define PAGE_SIZE vm_page_size
+#define PAGE_MASK vm_page_mask
+
+#define VM_PAGE_SIZE vm_page_size
+
+#define machine_ptob(x) ((x) << PAGE_SHIFT)
+
+#endif
+
+#define PAGE_MAX_SHIFT 14
+#define PAGE_MAX_SIZE (1 << PAGE_MAX_SHIFT)
+#define PAGE_MAX_MASK (PAGE_MAX_SIZE-1)
+
+#define PAGE_MIN_SHIFT 12
+#define PAGE_MIN_SIZE (1 << PAGE_MIN_SHIFT)
+#define PAGE_MIN_MASK (PAGE_MIN_SIZE-1)
+
+#ifndef __ASSEMBLER__
+
+#ifdef MACH_KERNEL_PRIVATE
+
+#define VM32_SUPPORT 1
+#define VM32_MIN_ADDRESS ((vm32_offset_t) 0)
+#define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
+#define VM_MAX_PAGE_ADDRESS VM_MAX_ADDRESS /* ARM64_TODO: ?? */
+
+/*
+ * kalloc() parameters:
+ *
+ * Historically kalloc's underlying zones were power-of-2 sizes, with a
+ * KALLOC_MINSIZE of 16 bytes. Thus the allocator ensured that
+ * (sizeof == alignof) >= 16 for all kalloc allocations.
+ *
+ * Today kalloc may use zones with intermediate (small) sizes, constrained by
+ * KALLOC_MINSIZE and a minimum alignment, expressed by KALLOC_LOG2_MINALIGN.
+ *
+ * Note that most dynamically allocated data structures contain more than
+ * one int/long/pointer member, so KALLOC_MINSIZE should probably start at 8.
+ */
+
+#if defined (__arm__)
+
+#define KALLOC_MINSIZE 8 /* minimum allocation size */
+#define KALLOC_LOG2_MINALIGN 3 /* log2 minimum alignment */
+
+#elif defined(__arm64__)
+
+#define KALLOC_MINSIZE 16 /* minimum allocation size */
+#define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */
+
+#else
+#error Unsupported arch
+#endif
+
+#endif
+
+#if defined (__arm__)
+
+#define VM_MIN_ADDRESS ((vm_address_t) 0x00000000)
+#define VM_MAX_ADDRESS ((vm_address_t) 0x80000000)
+
+/* system-wide values */
+#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0)
+#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_ADDRESS)
+
+#elif defined (__arm64__)
+
+#define VM_MIN_ADDRESS ((vm_address_t) 0x0000000000000000ULL)
+#define VM_MAX_ADDRESS ((vm_address_t) 0x0000000080000000ULL)
+
+/* system-wide values */
+#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0x0ULL)
+#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) 0x0000001000000000ULL)
+
+#else
+#error architecture not supported
+#endif
+
+#define VM_MAP_MIN_ADDRESS VM_MIN_ADDRESS
+#define VM_MAP_MAX_ADDRESS VM_MAX_ADDRESS
+
+#ifdef KERNEL
+
+#if defined (__arm__)
+#define VM_MIN_KERNEL_ADDRESS ((vm_address_t) 0x80000000)
+#define VM_MAX_KERNEL_ADDRESS ((vm_address_t) 0xFFFEFFFF)
+#define VM_HIGH_KERNEL_WINDOW ((vm_address_t) 0xFFFE0000)
+#elif defined (__arm64__)
+/*
+ * The minimum and maximum kernel address; some configurations may
+ * constrain the address space further.
+ */
+#define VM_MIN_KERNEL_ADDRESS ((vm_address_t) 0xffffffe000000000ULL)
+#define VM_MAX_KERNEL_ADDRESS ((vm_address_t) 0xfffffff3ffffffffULL)
+#else
+#error architecture not supported
+#endif
+
+#define VM_MIN_KERNEL_AND_KEXT_ADDRESS \
+ VM_MIN_KERNEL_ADDRESS
+
+#define VM_KERNEL_ADDRESS(va) ((((vm_address_t)(va))>=VM_MIN_KERNEL_ADDRESS) && \
+ (((vm_address_t)(va))<=VM_MAX_KERNEL_ADDRESS))
+
+#ifdef MACH_KERNEL_PRIVATE
+/*
+ * Physical memory is mapped linearly at an offset virtual memory.
+ */
+extern unsigned long gVirtBase, gPhysBase, gPhysSize;
+
+#define isphysmem(a) (((vm_address_t)(a) - gPhysBase) < gPhysSize)
+#define phystokv(a) ((vm_address_t)(a) - gPhysBase + gVirtBase)
+
+#if KASAN
+/* Increase the stack sizes to account for the redzones that get added to every
+ * stack object. */
+# define KERNEL_STACK_SIZE (4*4*4096)
+# define INTSTACK_SIZE (4*4*4096)
+#else
+# define KERNEL_STACK_SIZE (4*4096)
+# define INTSTACK_SIZE (4*4096)
+#endif
+
+#if defined (__arm__)
+#define HIGH_EXC_VECTORS ((vm_address_t) 0xFFFF0000)
+#endif
+
+#endif /* MACH_KERNEL_PRIVATE */
+#endif /* KERNEL */
+
+#endif /* !__ASSEMBLER__ */
+
+#define SWI_SYSCALL 0x80
+
+#endif /* _MACH_ARM_VM_PARAM_H_ */
projects / apple / xnu.git / blobdiff