projects / apple / xnu.git / blame
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|---|---|---|
| 5ba3f43e A |
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 | #ifndef __arm__ | |
| 35 | #error Wrong architecture - this file is meant for arm | |
| 36 | #endif | |
| 37 | ||
| 38 | #define LOWGLO_LAYOUT_MAGIC 0xC0DEC0DE | |
| 39 | ||
| 40 | #pragma pack(4) /* Make sure the structure stays as we defined it */ | |
| 41 | typedef struct lowglo { | |
| 42 | unsigned char lgVerCode[8]; /* 0xffff1000 System verification code */ | |
| 43 | uint32_t lgZero[2]; /* 0xffff1008 Double constant 0 */ | |
| 44 | uint32_t lgStext; /* 0xffff1010 Start of kernel text */ | |
| 45 | uint32_t lgRsv014[2]; /* 0xffff1014 Reserved */ | |
| 46 | uint32_t lgVersion; /* 0xffff101C Pointer to kernel version string */ | |
| 47 | uint32_t lgRsv020[216]; /* 0xffff1020 Reserved */ | |
| 48 | uint32_t lgKmodptr; /* 0xffff1380 Pointer to kmod, debugging aid */ | |
| 49 | uint32_t lgTransOff; /* 0xffff1384 Pointer to kdp_trans_off, debugging aid */ | |
| 50 | uint32_t lgRsv388[3]; /* 0xffff1388 Reserved */ | |
| 51 | uint32_t lgOSVersion; /* 0xffff1394 Pointer to OS version string */ | |
| 52 | uint32_t lgRsv398; /* 0xffff1398 Reserved */ | |
| 53 | uint32_t lgRebootFlag; /* 0xffff139C Pointer to debugger reboot trigger */ | |
| 54 | uint32_t lgManualPktAddr; /* 0xffff13A0 Pointer to manual packet structure */ | |
| 55 | uint32_t lgRsv3A4; /* 0xffff13A4 Reserved */ | |
| 56 | uint32_t lgPmapMemQ; /* 0xffff13A8 Pointer to PMAP memory queue */ | |
| 57 | uint32_t lgPmapMemPageOffset;/* 0xffff13AC Offset of physical page member in vm_page_with_ppnum_t */ | |
| 58 | uint32_t lgPmapMemChainOffset;/*0xffff13B0 Offset of listq in vm_page_t or vm_page_with_ppnum_t */ | |
| 59 | uint32_t lgStaticAddr; /* 0xffff13B4 Static allocation address */ | |
| 60 | uint32_t lgStaticSize; /* 0xffff13B8 Static allocation size */ | |
| 61 | uint32_t lgLayoutMajorVersion; /* 0xffff13BC Lowglo layout major version */ | |
| 62 | uint32_t lgLayoutMagic; /* 0xffff13C0 Magic value evaluated to determine if lgLayoutVersion is valid */ | |
| 63 | uint32_t lgPmapMemStartAddr; /* 0xffff13C4 Pointer to start of vm_page_t array */ | |
| 64 | uint32_t lgPmapMemEndAddr; /* 0xffff13C8 Pointer to end of vm_page_t array */ | |
| 65 | uint32_t lgPmapMemPagesize; /* 0xffff13CC size of vm_page_t */ | |
| 66 | uint32_t lgPmapMemFirstppnum; /* 0xffff13D0 physical page number of the first vm_page_t in the array */ | |
| 67 | uint32_t lgLayoutMinorVersion; /* 0xffff13D4 Lowglo layout minor version */ | |
| 68 | uint32_t lgPageShift; /* 0xffff13D8 Number of shifts from page number to size */ | |
| 69 | } lowglo; | |
| 70 | #pragma pack() | |
| 71 | ||
| 72 | extern lowglo lowGlo; | |
| 73 | ||
| 74 | void patch_low_glo(void); | |
| 75 | void patch_low_glo_static_region(uint32_t address, uint32_t size); | |
| 76 | void patch_low_glo_vm_page_info(void *, void *, uint32_t); | |
| 77 | ||
| 78 | #endif /* _LOW_MEMORY_GLOBALS_H_ */ |