/* * Copyright (c) 2017 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@ */ /* * Header files for the Low Memory Globals (lg) */ #ifndef _LOW_MEMORY_GLOBALS_H_ #define _LOW_MEMORY_GLOBALS_H_ #ifndef __arm__ #error Wrong architecture - this file is meant for arm #endif #define LOWGLO_LAYOUT_MAGIC 0xC0DEC0DE #pragma pack(4) /* Make sure the structure stays as we defined it */ typedef struct lowglo { unsigned char lgVerCode[8]; /* 0xffff1000 System verification code */ uint32_t lgZero[2]; /* 0xffff1008 Double constant 0 */ uint32_t lgStext; /* 0xffff1010 Start of kernel text */ uint32_t lgRsv014[2]; /* 0xffff1014 Reserved */ uint32_t lgVersion; /* 0xffff101C Pointer to kernel version string */ uint32_t lgRsv020[216]; /* 0xffff1020 Reserved */ uint32_t lgKmodptr; /* 0xffff1380 Pointer to kmod, debugging aid */ uint32_t lgTransOff; /* 0xffff1384 Pointer to kdp_trans_off, debugging aid */ uint32_t lgRsv388[3]; /* 0xffff1388 Reserved */ uint32_t lgOSVersion; /* 0xffff1394 Pointer to OS version string */ uint32_t lgRsv398; /* 0xffff1398 Reserved */ uint32_t lgRebootFlag; /* 0xffff139C Pointer to debugger reboot trigger */ uint32_t lgManualPktAddr; /* 0xffff13A0 Pointer to manual packet structure */ uint32_t lgRsv3A4; /* 0xffff13A4 Reserved */ uint32_t lgPmapMemQ; /* 0xffff13A8 Pointer to PMAP memory queue */ uint32_t lgPmapMemPageOffset;/* 0xffff13AC Offset of physical page member in vm_page_with_ppnum_t */ uint32_t lgPmapMemChainOffset;/*0xffff13B0 Offset of listq in vm_page_t or vm_page_with_ppnum_t */ uint32_t lgStaticAddr; /* 0xffff13B4 Static allocation address */ uint32_t lgStaticSize; /* 0xffff13B8 Static allocation size */ uint32_t lgLayoutMajorVersion; /* 0xffff13BC Lowglo layout major version */ uint32_t lgLayoutMagic; /* 0xffff13C0 Magic value evaluated to determine if lgLayoutVersion is valid */ uint32_t lgPmapMemStartAddr; /* 0xffff13C4 Pointer to start of vm_page_t array */ uint32_t lgPmapMemEndAddr; /* 0xffff13C8 Pointer to end of vm_page_t array */ uint32_t lgPmapMemPagesize; /* 0xffff13CC size of vm_page_t */ uint32_t lgPmapMemFirstppnum; /* 0xffff13D0 physical page number of the first vm_page_t in the array */ uint32_t lgLayoutMinorVersion; /* 0xffff13D4 Lowglo layout minor version */ uint32_t lgPageShift; /* 0xffff13D8 Number of shifts from page number to size */ } lowglo; #pragma pack() extern lowglo lowGlo; void patch_low_glo(void); void patch_low_glo_static_region(uint32_t address, uint32_t size); void patch_low_glo_vm_page_info(void *, void *, uint32_t); #endif /* _LOW_MEMORY_GLOBALS_H_ */