* ARM machine dependent virtual memory parameters.
*/
-#ifndef _MACH_ARM_VM_PARAM_H_
+#ifndef _MACH_ARM_VM_PARAM_H_
#define _MACH_ARM_VM_PARAM_H_
#if defined(KERNEL_PRIVATE) && __ARM_16K_PG__
#include <mach/vm_page_size.h>
#endif
-#define BYTE_SIZE 8 /* byte size in bits */
+#define BYTE_SIZE 8 /* byte size in bits */
#if defined (KERNEL)
#ifndef __ASSEMBLER__
-#ifdef __arm__
-#define PAGE_SHIFT_CONST 12
+#ifdef __arm__
+#define PAGE_SHIFT_CONST 12
#elif defined(__arm64__)
-extern unsigned PAGE_SHIFT_CONST;
+extern int PAGE_SHIFT_CONST;
#else
#error Unsupported arch
#endif
#if defined(KERNEL_PRIVATE) && __ARM_16K_PG__
-#define PAGE_SHIFT ARM_PGSHIFT
+#define PAGE_SHIFT ARM_PGSHIFT
#else
-#define PAGE_SHIFT PAGE_SHIFT_CONST
+#define PAGE_SHIFT PAGE_SHIFT_CONST
#endif
-#define PAGE_SIZE (1 << PAGE_SHIFT)
-#define PAGE_MASK (PAGE_SIZE-1)
+#define PAGE_SIZE (1 << PAGE_SHIFT)
+#define PAGE_MASK (PAGE_SIZE-1)
-#define VM_PAGE_SIZE PAGE_SIZE
+#define VM_PAGE_SIZE PAGE_SIZE
-#define machine_ptob(x) ((x) << PAGE_SHIFT)
+#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))
+#define TEST_PAGE_SIZE_16K ((PAGE_SHIFT_CONST == 14))
+#define TEST_PAGE_SIZE_4K ((PAGE_SHIFT_CONST == 12))
-#endif /* !__ASSEMBLER__ */
+#endif /* !__ASSEMBLER__ */
#else
-#define PAGE_SHIFT vm_page_shift
-#define PAGE_SIZE vm_page_size
-#define PAGE_MASK vm_page_mask
+#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 VM_PAGE_SIZE vm_page_size
-#define machine_ptob(x) ((x) << PAGE_SHIFT)
+#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_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)
+#define PAGE_MIN_SHIFT 12
+#define PAGE_MIN_SIZE (1 << PAGE_MIN_SHIFT)
+#define PAGE_MIN_MASK (PAGE_MIN_SIZE-1)
+
+#define VM_MAX_PAGE_ADDRESS MACH_VM_MAX_ADDRESS
#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: ?? */
+#define VM32_SUPPORT 1
+#define VM32_MIN_ADDRESS ((vm32_offset_t) 0)
+#define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_ADDRESS & 0xFFFFFFFF))
/*
* kalloc() parameters:
#if defined (__arm__)
-#define KALLOC_MINSIZE 8 /* minimum allocation size */
-#define KALLOC_LOG2_MINALIGN 3 /* log2 minimum alignment */
+#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 */
+#define KALLOC_MINSIZE 16 /* minimum allocation size */
+#define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */
+
+#else
+#error Unsupported arch
+#endif
+#if defined (__arm__)
+/* existing zone map size limit moved from osfmk/vm/vm_init.c */
+#define ZONE_MAP_MAX (1024 * 1024 * 1536) /* 1.5GB for 32bit systems */
+#elif defined(__arm64__)
+/*
+ * Limits the physical pages in the zone map
+ */
+#define ZONE_MAP_MAX (31ULL << 30) /* 31GB for 64bit systems */
#else
#error Unsupported arch
#endif
#if defined (__arm__)
-#define VM_MIN_ADDRESS ((vm_address_t) 0x00000000)
-#define VM_MAX_ADDRESS ((vm_address_t) 0x80000000)
+#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)
+#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)
+#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)
-
+#define MACH_VM_MIN_ADDRESS_RAW 0x0ULL
+#if defined(PLATFORM_MacOSX) || defined(PLATFORM_DriverKit)
+#define MACH_VM_MAX_ADDRESS_RAW 0x00007FFFFE000000ULL
#else
+#define MACH_VM_MAX_ADDRESS_RAW 0x0000000FC0000000ULL
+#endif
+
+#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) MACH_VM_MIN_ADDRESS_RAW)
+#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) MACH_VM_MAX_ADDRESS_RAW)
+
+#define MACH_VM_MIN_GPU_CARVEOUT_ADDRESS_RAW 0x0000001000000000ULL
+#define MACH_VM_MAX_GPU_CARVEOUT_ADDRESS_RAW 0x0000007000000000ULL
+#define MACH_VM_MIN_GPU_CARVEOUT_ADDRESS ((mach_vm_offset_t) MACH_VM_MIN_GPU_CARVEOUT_ADDRESS_RAW)
+#define MACH_VM_MAX_GPU_CARVEOUT_ADDRESS ((mach_vm_offset_t) MACH_VM_MAX_GPU_CARVEOUT_ADDRESS_RAW)
+
+#else /* defined(__arm64__) */
#error architecture not supported
#endif
#define VM_MAP_MIN_ADDRESS VM_MIN_ADDRESS
#define VM_MAP_MAX_ADDRESS VM_MAX_ADDRESS
-#ifdef KERNEL
+#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)
+#define VM_KERNEL_POINTER_SIGNIFICANT_BITS 31
+#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)
+#define TiB(x) ((0ULL + (x)) << 40)
+#define GiB(x) ((0ULL + (x)) << 30)
+
+#if XNU_KERNEL_PRIVATE
+#if defined(ARM_LARGE_MEMORY)
+/*
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fe90_0000_0000 |-1472GB | 576GB | KASAN_SHADOW_MIN |
+ * | | | | VM_MAX_KERNEL_ADDRESS |
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fe10_0000_0000 |-1984GB | 64GB | PMAP_HEAP_RANGE_START |
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fe00_0700_4000 | | | VM_KERNEL_LINK_ADDRESS |
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fe00_0000_0000 | -2TB | 0GB | VM_MIN_KERNEL_ADDRESS |
+ * | | | | LOW_GLOBALS |
+ * +-----------------------+--------+--------+------------------------+
+ */
+#define VM_KERNEL_POINTER_SIGNIFICANT_BITS 41
+
+// Kernel VA space starts at -2TB
+#define VM_MIN_KERNEL_ADDRESS ((vm_address_t) (0ULL - TiB(2)))
+
+// 1.25TB for static_memory_region, 512GB for kernel heap, 256GB for KASAN
+#define VM_MAX_KERNEL_ADDRESS ((vm_address_t) (VM_MIN_KERNEL_ADDRESS + GiB(64) + GiB(512) - 1))
+#else // ARM_LARGE_MEMORY
+/*
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fffc_0000_0000 | -16GB | 112GB | KASAN_SHADOW_MIN |
+ * | | | | VM_MAX_KERNEL_ADDRESS |
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fff0_0700_4000 | | | VM_KERNEL_LINK_ADDRESS |
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_fff0_0000_0000 | -64GB | 64GB | LOW_GLOBALS |
+ * | | | | PMAP_HEAP_RANGE_START | <= H8
+ * +-----------------------+--------+--------+------------------------+
+ * | 0xffff_ffe0_0000_0000 | -128GB | 0GB | VM_MIN_KERNEL_ADDRESS |
+ * | | | | PMAP_HEAP_RANGE_START | >= H9
+ * +-----------------------+--------+--------+------------------------+
+ */
+#define VM_KERNEL_POINTER_SIGNIFICANT_BITS 37
+#define VM_MIN_KERNEL_ADDRESS ((vm_address_t) 0xffffffe000000000ULL)
+#define VM_MAX_KERNEL_ADDRESS ((vm_address_t) 0xfffffffbffffffffULL)
+#endif // ARM_LARGE_MEMORY
+
+#else // !XNU_KERNEL_PRIVATE
+// Inform kexts about largest possible kernel address space
+#define VM_MIN_KERNEL_ADDRESS ((vm_address_t) (0ULL - TiB(2)))
+#define VM_MAX_KERNEL_ADDRESS ((vm_address_t) 0xfffffffbffffffffULL)
+#endif // XNU_KERNEL_PRIVATE
#else
#error architecture not supported
#endif
-#define VM_MIN_KERNEL_AND_KEXT_ADDRESS \
- VM_MIN_KERNEL_ADDRESS
+#define VM_MIN_KERNEL_AND_KEXT_ADDRESS VM_MIN_KERNEL_ADDRESS
+
+#if __has_feature(ptrauth_calls)
+#include <ptrauth.h>
+#define VM_KERNEL_STRIP_PTR(_v) (ptrauth_strip((void *)(uintptr_t)(_v), ptrauth_key_asia))
+#else /* !ptrauth_calls */
+#define VM_KERNEL_STRIP_PTR(_v) (_v)
+#endif /* ptrauth_calls */
-#define VM_KERNEL_ADDRESS(va) ((((vm_address_t)(va))>=VM_MIN_KERNEL_ADDRESS) && \
- (((vm_address_t)(va))<=VM_MAX_KERNEL_ADDRESS))
+#define VM_KERNEL_ADDRESS(_va) \
+ ((((vm_address_t)VM_KERNEL_STRIP_PTR(_va)) >= VM_MIN_KERNEL_ADDRESS) && \
+ (((vm_address_t)VM_KERNEL_STRIP_PTR(_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;
+extern unsigned long gVirtBase, gPhysBase, gPhysSize;
+
+#define isphysmem(a) (((vm_address_t)(a) - gPhysBase) < gPhysSize)
+#define physmap_enclosed(a) isphysmem(a)
-#define isphysmem(a) (((vm_address_t)(a) - gPhysBase) < gPhysSize)
-#define phystokv(a) ((vm_address_t)(a) - gPhysBase + gVirtBase)
+/*
+ * gPhysBase/Size only represent kernel-managed memory. These globals represent
+ * the actual DRAM base address and size as reported by iBoot through the device
+ * tree.
+ */
+#include <stdint.h>
+extern uint64_t gDramBase, gDramSize;
+#define is_dram_addr(addr) (((uint64_t)(addr) - gDramBase) < gDramSize)
#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)
+# define KERNEL_STACK_SIZE (4*4*4096)
+#elif DEBUG
+/**
+ * Increase the stack size to account for less efficient use of stack space when
+ * compiling with -O0.
+ */
+# define KERNEL_STACK_SIZE (2*4*4096)
+#else
+/*
+ * KERNEL_STACK_MULTIPLIER can be defined externally to get a larger
+ * kernel stack size. For example, adding "-DKERNEL_STACK_MULTIPLIER=2"
+ * helps avoid kernel stack overflows when compiling with "-O0".
+ */
+#ifndef KERNEL_STACK_MULTIPLIER
+#define KERNEL_STACK_MULTIPLIER (1)
+#endif /* KERNEL_STACK_MULTIPLIER */
+# define KERNEL_STACK_SIZE (4*4096*KERNEL_STACK_MULTIPLIER)
+#endif
+
+#define INTSTACK_SIZE (4*4096)
+
+#ifdef __arm64__
+#define EXCEPSTACK_SIZE (4*4096)
#else
-# define KERNEL_STACK_SIZE (4*4096)
-# define INTSTACK_SIZE (4*4096)
+#define FIQSTACK_SIZE (4096)
+#endif
+
+#if defined (__arm__)
+#define HIGH_EXC_VECTORS ((vm_address_t) 0xFFFF0000)
#endif
+/*
+ * TODO: We're hardcoding the expected virtual TEXT base here;
+ * that gives us an ugly dependency on a linker argument in
+ * the make files. Clean this up, so we don't hardcode it
+ * twice; this is nothing but trouble.
+ */
#if defined (__arm__)
-#define HIGH_EXC_VECTORS ((vm_address_t) 0xFFFF0000)
+#define VM_KERNEL_LINK_ADDRESS ((vm_address_t) 0x80000000)
+#elif defined (__arm64__)
+/* VM_KERNEL_LINK_ADDRESS defined in makedefs/MakeInc.def for arm64 platforms */
+#else
+#error architecture not supported
#endif
-#endif /* MACH_KERNEL_PRIVATE */
-#endif /* KERNEL */
+#endif /* MACH_KERNEL_PRIVATE */
+#endif /* KERNEL */
-#endif /* !__ASSEMBLER__ */
+#endif /* !__ASSEMBLER__ */
-#define SWI_SYSCALL 0x80
+#define SWI_SYSCALL 0x80
-#endif /* _MACH_ARM_VM_PARAM_H_ */
+#endif /* _MACH_ARM_VM_PARAM_H_ */
projects / apple / xnu.git / blobdiff