1*d8b80295SApple OSS Distributions/* 2*d8b80295SApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*d8b80295SApple OSS Distributions * 4*d8b80295SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*d8b80295SApple OSS Distributions * 6*d8b80295SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*d8b80295SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*d8b80295SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*d8b80295SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*d8b80295SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*d8b80295SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*d8b80295SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*d8b80295SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*d8b80295SApple OSS Distributions * 15*d8b80295SApple OSS Distributions * Please obtain a copy of the License at 16*d8b80295SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*d8b80295SApple OSS Distributions * 18*d8b80295SApple OSS Distributions * The Original Code and all software distributed under the License are 19*d8b80295SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*d8b80295SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*d8b80295SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*d8b80295SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*d8b80295SApple OSS Distributions * Please see the License for the specific language governing rights and 24*d8b80295SApple OSS Distributions * limitations under the License. 25*d8b80295SApple OSS Distributions * 26*d8b80295SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*d8b80295SApple OSS Distributions */ 28*d8b80295SApple OSS Distributions#include <arm64/asm.h> 29*d8b80295SApple OSS Distributions#include <arm64/proc_reg.h> 30*d8b80295SApple OSS Distributions#include "assym.s" 31*d8b80295SApple OSS Distributions 32*d8b80295SApple OSS Distributions#if defined(__arm64__) 33*d8b80295SApple OSS Distributions/* We're fine, use adrp, add */ 34*d8b80295SApple OSS Distributions#else 35*d8b80295SApple OSS Distributions#error Unknown architecture. 36*d8b80295SApple OSS Distributions#endif 37*d8b80295SApple OSS Distributions 38*d8b80295SApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*d8b80295SApple OSS Distributions 40*d8b80295SApple OSS Distributions .align 14 41*d8b80295SApple OSS Distributions 42*d8b80295SApple OSS Distributions .globl EXT(intstack_low_guard) 43*d8b80295SApple OSS DistributionsLEXT(intstack_low_guard) 44*d8b80295SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*d8b80295SApple OSS Distributions 46*d8b80295SApple OSS Distributions /* IRQ stack */ 47*d8b80295SApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*d8b80295SApple OSS DistributionsLEXT(intstack) 49*d8b80295SApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*d8b80295SApple OSS Distributions .globl EXT(intstack_top) 51*d8b80295SApple OSS DistributionsLEXT(intstack_top) 52*d8b80295SApple OSS Distributions 53*d8b80295SApple OSS Distributions .globl EXT(intstack_high_guard) 54*d8b80295SApple OSS DistributionsLEXT(intstack_high_guard) 55*d8b80295SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*d8b80295SApple OSS Distributions 57*d8b80295SApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*d8b80295SApple OSS Distributions 59*d8b80295SApple OSS Distributions#ifdef __arm64__ 60*d8b80295SApple OSS Distributions .global EXT(excepstack) 61*d8b80295SApple OSS DistributionsLEXT(excepstack) 62*d8b80295SApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*d8b80295SApple OSS Distributions .globl EXT(excepstack_top) 64*d8b80295SApple OSS DistributionsLEXT(excepstack_top) 65*d8b80295SApple OSS Distributions 66*d8b80295SApple OSS Distributions .globl EXT(excepstack_high_guard) 67*d8b80295SApple OSS DistributionsLEXT(excepstack_high_guard) 68*d8b80295SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*d8b80295SApple OSS Distributions 70*d8b80295SApple OSS Distributions#endif 71*d8b80295SApple OSS Distributions 72*d8b80295SApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*d8b80295SApple OSS Distributions .global EXT(kd_early_buffer) 74*d8b80295SApple OSS Distributions .align 14 75*d8b80295SApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*d8b80295SApple OSS Distributions .space 16*1024,0 77*d8b80295SApple OSS Distributions 78*d8b80295SApple OSS Distributions .section __DATA, __data // Aligned data 79*d8b80295SApple OSS Distributions .align 3 // unsigned long long aligned Section 80*d8b80295SApple OSS Distributions .globl EXT(RTClockData) 81*d8b80295SApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*d8b80295SApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*d8b80295SApple OSS Distributions 84*d8b80295SApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*d8b80295SApple OSS Distributions .align 4 86*d8b80295SApple OSS Distributions .globl EXT(vfptrash_data) 87*d8b80295SApple OSS DistributionsLEXT(vfptrash_data) 88*d8b80295SApple OSS Distributions .fill 64, 4, 0xca55e77e 89*d8b80295SApple OSS Distributions#endif 90*d8b80295SApple OSS Distributions 91*d8b80295SApple OSS Distributions#if __arm64__ 92*d8b80295SApple OSS Distributions 93*d8b80295SApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 94*d8b80295SApple OSS Distributions#if CONFIG_SPTM 95*d8b80295SApple OSS Distributions .section __DATA_SPTM, __const 96*d8b80295SApple OSS Distributions .align 14 97*d8b80295SApple OSS Distributions /* reserve a page for xnu-CTRR covered SPTM data */ 98*d8b80295SApple OSS Distributions .space 16*1024,0 99*d8b80295SApple OSS Distributions#else 100*d8b80295SApple OSS Distributions .section __DATA, __const 101*d8b80295SApple OSS Distributions .align 14 102*d8b80295SApple OSS Distributions#endif /* CONFIG_SPTM */ 103*d8b80295SApple OSS Distributions/* reserve space for read only page tables */ 104*d8b80295SApple OSS DistributionsLEXT(ropagetable_begin) 105*d8b80295SApple OSS Distributions#if XNU_TARGET_OS_OSX 106*d8b80295SApple OSS Distributions // A big auxKC might need more page tables, especially because 107*d8b80295SApple OSS Distributions // it's not block mapped. 108*d8b80295SApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 109*d8b80295SApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 110*d8b80295SApple OSS Distributions .space 18*16*1024,0 111*d8b80295SApple OSS Distributions#elif KASAN 112*d8b80295SApple OSS Distributions .space 16*16*1024,0 113*d8b80295SApple OSS Distributions#else 114*d8b80295SApple OSS Distributions .space 14*16*1024,0 115*d8b80295SApple OSS Distributions#endif 116*d8b80295SApple OSS Distributions#else 117*d8b80295SApple OSS DistributionsLEXT(ropagetable_begin) 118*d8b80295SApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 119*d8b80295SApple OSS Distributions 120*d8b80295SApple OSS DistributionsLEXT(ropagetable_end) 121*d8b80295SApple OSS Distributions 122*d8b80295SApple OSS Distributions .globl EXT(ropagetable_begin) 123*d8b80295SApple OSS Distributions .globl EXT(ropagetable_end) 124*d8b80295SApple OSS Distributions#endif /* __arm64__ */ 125*d8b80295SApple OSS Distributions 126*d8b80295SApple OSS Distributions/* vim: set ts=4: */ 127