projects / apple / xnu.git / blame
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|---|---|---|
| 5ba3f43e A |
1 | /* |
| 2 | * Copyright (c) 2012-2013 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 | #include <mach_kdp.h> | |
| 30 | #include <mach/vm_param.h> | |
| 31 | #include <arm/lowglobals.h> | |
| 32 | #include <vm/vm_object.h> | |
| 33 | #include <vm/vm_page.h> | |
| 34 | ||
| 35 | extern vm_offset_t vm_kernel_stext; | |
| 36 | extern void *version; | |
| 37 | extern void *kmod; | |
| 38 | extern void *kdp_trans_off; | |
| 39 | extern void *osversion; | |
| 40 | extern void *flag_kdp_trigger_reboot; | |
| 41 | extern void *manual_pkt; | |
| 42 | extern struct vm_object pmap_object_store; /* store pt pages */ | |
| 43 | ||
| 44 | lowglo lowGlo __attribute__ ((aligned(PAGE_MAX_SIZE))) = { | |
| 45 | .lgVerCode = { 'O','c','t','o','p','u','s',' ' }, | |
| 46 | // Increment the major version for changes that break the current Astris | |
| 47 | // usage of lowGlo values | |
| 48 | // Increment the minor version for changes that provide additonal info/function | |
| 49 | // but does not break current usage | |
| 50 | .lgLayoutMajorVersion = 3, | |
| 51 | .lgLayoutMinorVersion = 0, | |
| 52 | .lgLayoutMagic = LOWGLO_LAYOUT_MAGIC, | |
| 53 | .lgVersion = (uint32_t)&version, | |
| 54 | .lgKmodptr = (uint32_t)&kmod, | |
| 55 | .lgPageShift = PAGE_SHIFT, | |
| 56 | #if MACH_KDP | |
| 57 | .lgTransOff = (uint32_t)&kdp_trans_off, | |
| 58 | #endif | |
| 59 | .lgOSVersion = (uint32_t)&osversion, | |
| 60 | #if MACH_KDP && CONFIG_KDP_INTERACTIVE_DEBUGGING | |
| 61 | .lgRebootFlag = (uint32_t)&flag_kdp_trigger_reboot, | |
| 62 | .lgManualPktAddr = (uint32_t)&manual_pkt, | |
| 63 | #endif | |
| 64 | .lgPmapMemQ = (uint32_t)&(pmap_object_store.memq), | |
| 65 | .lgPmapMemPageOffset = offsetof(struct vm_page_with_ppnum, phys_page), | |
| 66 | .lgPmapMemChainOffset = offsetof(struct vm_page, listq), | |
| 67 | .lgPmapMemPagesize = (uint32_t)sizeof(struct vm_page), | |
| 68 | ||
| 69 | .lgPmapMemStartAddr = -1, | |
| 70 | .lgPmapMemEndAddr = -1, | |
| 71 | .lgPmapMemFirstppnum = -1 | |
| 72 | }; | |
| 73 | ||
| 74 | void patch_low_glo(void) | |
| 75 | { | |
| 76 | lowGlo.lgStext = (uint32_t)vm_kernel_stext; | |
| 77 | } | |
| 78 | ||
| 79 | void patch_low_glo_static_region(uint32_t address, uint32_t size) | |
| 80 | { | |
| 81 | lowGlo.lgStaticAddr = address; | |
| 82 | lowGlo.lgStaticSize = size; | |
| 83 | } | |
| 84 | ||
| 85 | ||
| 86 | void patch_low_glo_vm_page_info(void * start_addr, void * end_addr, uint32_t first_ppnum) | |
| 87 | { | |
| 88 | lowGlo.lgPmapMemStartAddr = (uint32_t)start_addr; | |
| 89 | lowGlo.lgPmapMemEndAddr = (uint32_t)end_addr; | |
| 90 | lowGlo.lgPmapMemFirstppnum = first_ppnum; | |
| 91 | } |