| | 1 | /* |
| | 2 | * Copyright (c) 2017 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Header files for the Low Memory Globals (lg) |
| | 30 | */ |
| | 31 | #ifndef _LOW_MEMORY_GLOBALS_H_ |
| | 32 | #define _LOW_MEMORY_GLOBALS_H_ |
| | 33 | |
| | 34 | #include <mach/mach_types.h> |
| | 35 | #include <mach/vm_types.h> |
| | 36 | #include <mach/machine/vm_types.h> |
| | 37 | #include <mach/vm_prot.h> |
| | 38 | |
| | 39 | #ifndef __arm64__ |
| | 40 | #error Wrong architecture - this file is meant for arm64 |
| | 41 | #endif |
| | 42 | |
| | 43 | #define LOWGLO_LAYOUT_MAGIC 0xC0DEC0DE |
| | 44 | |
| | 45 | /* |
| | 46 | * This structure is bound to lowmem_vectors.c. Make sure changes here are |
| | 47 | * reflected there as well. |
| | 48 | */ |
| | 49 | |
| | 50 | #pragma pack(8) /* Make sure the structure stays as we defined it */ |
| | 51 | typedef struct lowglo { |
| | 52 | unsigned char lgVerCode[8]; /* 0xffffff8000002000 System verification code */ |
| | 53 | uint64_t lgZero; /* 0xffffff8000002008 Constant 0 */ |
| | 54 | uint64_t lgStext; /* 0xffffff8000002010 Start of kernel text */ |
| | 55 | uint64_t lgVersion; /* 0xffffff8000002018 Pointer to kernel version string */ |
| | 56 | uint64_t lgOSVersion; /* 0xffffff8000002020 Pointer to OS version string */ |
| | 57 | uint64_t lgKmodptr; /* 0xffffff8000002028 Pointer to kmod, debugging aid */ |
| | 58 | uint64_t lgTransOff; /* 0xffffff8000002030 Pointer to kdp_trans_off, debugging aid */ |
| | 59 | uint64_t lgRebootFlag; /* 0xffffff8000002038 Pointer to debugger reboot trigger */ |
| | 60 | uint64_t lgManualPktAddr; /* 0xffffff8000002040 Pointer to manual packet structure */ |
| | 61 | uint64_t lgAltDebugger; /* 0xffffff8000002048 Pointer to reserved space for alternate kernel debugger */ |
| | 62 | uint64_t lgPmapMemQ; /* 0xffffff8000002050 Pointer to PMAP memory queue */ |
| | 63 | uint64_t lgPmapMemPageOffset; /* 0xffffff8000002058 Offset of physical page member in vm_page_t or vm_page_with_ppnum_t */ |
| | 64 | uint64_t lgPmapMemChainOffset; /* 0xffffff8000002060 Offset of listq in vm_page_t or vm_page_with_ppnum_t */ |
| | 65 | uint64_t lgStaticAddr; /* 0xffffff8000002068 Static allocation address */ |
| | 66 | uint64_t lgStaticSize; /* 0xffffff8000002070 Static allocation size */ |
| | 67 | uint64_t lgLayoutMajorVersion; /* 0xffffff8000002078 Lowglo major layout version */ |
| | 68 | uint64_t lgLayoutMagic; /* 0xffffff8000002080 Magic value evaluated to determine if lgLayoutVersion is valid */ |
| | 69 | uint64_t lgPmapMemStartAddr; /* 0xffffff8000002088 Pointer to start of vm_page_t array */ |
| | 70 | uint64_t lgPmapMemEndAddr; /* 0xffffff8000002090 Pointer to end of vm_page_t array */ |
| | 71 | uint64_t lgPmapMemPagesize; /* 0xffffff8000002098 size of vm_page_t */ |
| | 72 | uint64_t lgPmapMemFromArrayMask; /* 0xffffff80000020A0 Mask to indicate page is from vm_page_t array */ |
| | 73 | uint64_t lgPmapMemFirstppnum; /* 0xffffff80000020A8 physical page number of the first vm_page_t in the array */ |
| | 74 | uint64_t lgPmapMemPackedShift; /* 0xffffff80000020B0 alignment of packed pointer */ |
| | 75 | uint64_t lgPmapMemPackedBaseAddr; /* 0xffffff80000020B8 base address of that packed pointers are relative to */ |
| | 76 | uint64_t lgLayoutMinorVersion; /* 0xffffff80000020C0 Lowglo minor layout version */ |
| | 77 | uint64_t lgPageShift; /* 0xffffff80000020C8 number of shifts from page number to size */ |
| | 78 | uint64_t lgVmFirstPhys; /* 0xffffff80000020D0 First physical address of kernel-managed DRAM (inclusive) */ |
| | 79 | uint64_t lgVmLastPhys; /* 0xffffff80000020D8 Last physical address of kernel-managed DRAM (exclusive) */ |
| | 80 | uint64_t lgPhysMapBase; /* 0xffffff80000020E0 First virtual address of the Physical Aperture (inclusive) */ |
| | 81 | uint64_t lgPhysMapEnd; /* 0xffffff80000020E8 Last virtual address of the Physical Aperture (exclusive) */ |
| | 82 | uint64_t lgPmapIoRangePtr; /* 0xffffff80000020F0 Pointer to an array of pmap_io_range_t objects obtained from the device tree. */ |
| | 83 | uint64_t lgNumPmapIoRanges; /* 0xffffff80000020F8 Number of pmap_io_range regions in the array represented by lgPmapIoRangePtr. */ |
| | 84 | } lowglo; |
| | 85 | #pragma pack() |
| | 86 | |
| | 87 | extern lowglo lowGlo; |
| | 88 | |
| | 89 | void patch_low_glo(void); |
| | 90 | void patch_low_glo_static_region(uint64_t address, uint64_t size); |
| | 91 | void patch_low_glo_vm_page_info(void *, void *, uint32_t); |
| | 92 | |
| | 93 | #endif /* _LOW_MEMORY_GLOBALS_H_ */ |
projects / apple / xnu.git / blame_incremental