1/* 2 * Copyright (c) 2007-2021 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#include <arm64/asm.h> 29#include <arm64/proc_reg.h> 30#include "assym.s" 31 32#if CONFIG_SPTM 33#include <sptm/sptm_xnu.h> 34#endif /* CONFIG_SPTM */ 35 36#if defined(__arm64__) 37/* We're fine, use adrp, add */ 38#else 39#error Unknown architecture. 40#endif 41 42 .section __BOOTDATA, __data // Aligned data 43 44 .align 14 45 46 .globl EXT(intstack_low_guard) 47LEXT(intstack_low_guard) 48 .space (PAGE_MAX_SIZE_NUM) 49 50 /* IRQ stack */ 51 .globl EXT(intstack) // Boot processor IRQ stack 52LEXT(intstack) 53 .space (INTSTACK_SIZE_NUM) 54 .globl EXT(intstack_top) 55LEXT(intstack_top) 56 57 .globl EXT(intstack_high_guard) 58LEXT(intstack_high_guard) 59 .space (PAGE_MAX_SIZE_NUM) 60 61/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 62 63#ifdef __arm64__ 64 .global EXT(excepstack) 65LEXT(excepstack) 66 .space (EXCEPSTACK_SIZE_NUM) 67 .globl EXT(excepstack_top) 68LEXT(excepstack_top) 69 70 .globl EXT(excepstack_high_guard) 71LEXT(excepstack_high_guard) 72 .space (PAGE_MAX_SIZE_NUM) 73 74#endif 75 76 77// Must align to 16K here, due to <rdar://problem/33268668> 78 .global EXT(kd_early_buffer) 79 .align 14 80LEXT(kd_early_buffer) // space for kdebug's early event buffer 81 .space 16*1024,0 82 83 .section __DATA, __data // Aligned data 84 .align 3 // unsigned long long aligned Section 85 .globl EXT(RTClockData) 86LEXT(RTClockData) // Real Time clock area 87 .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 88 89#if TRASH_VFP_ON_SAVE 90 .align 4 91 .globl EXT(vfptrash_data) 92LEXT(vfptrash_data) 93 .fill 64, 4, 0xca55e77e 94#endif 95 96#if __arm64__ 97 98#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 99#if CONFIG_SPTM 100 .section __DATA_SPTM, __const 101 .align 14 102 /* reserve a page for xnu-CTRR covered SPTM data */ 103 .space 16*1024,0 104#else 105 .section __DATA, __const 106 .align 14 107#endif /* CONFIG_SPTM */ 108/* reserve space for read only page tables */ 109LEXT(ropagetable_begin) 110#if XNU_TARGET_OS_OSX 111 // A big auxKC might need more page tables, especially because 112 // it's not block mapped. 113 // Note that we don't distuinguish between KASAN or not: With 114 // a KASAN kernel, the effective auxKC limit is smaller. 115 .space 20*16*1024,0 116#elif KASAN 117 .space 16*16*1024,0 118#else 119 .space 14*16*1024,0 120#endif 121#else 122LEXT(ropagetable_begin) 123#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 124 125LEXT(ropagetable_end) 126 127 .globl EXT(ropagetable_begin) 128 .globl EXT(ropagetable_end) 129#endif /* __arm64__ */ 130 131/* vim: set ts=4: */ 132