1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 2 /* 3 * Linker script macros to generate Image head 4 * 5 * Copyright (C) 2014 ARM Ltd. 6 */ 7 #ifndef __ARM64_KERNEL_IMAGE_H 8 #define __ARM64_KERNEL_IMAGE_H 9 10 #ifndef LINKER_SCRIPT 11 #error This file should only be included in vm 12 #endif 13 14 #include <asm/image.h> 15 16 /* 17 * There aren't any ELF relocations we can use 18 * at link time (e.g. the subtraction of two s 19 * the linker to endian-swap certain values be 20 * 21 * Note that, in order for this to work when b 22 * (for KASLR), these values should not be ref 23 * relocations, since these are fixed up at ru 24 * when PIE is in effect. So we need to split 25 * words. 26 */ 27 #ifdef CONFIG_CPU_BIG_ENDIAN 28 #define DATA_LE32(data) 29 ((((data) & 0x000000ff) << 24) | 30 (((data) & 0x0000ff00) << 8) | 31 (((data) & 0x00ff0000) >> 8) | 32 (((data) & 0xff000000) >> 24)) 33 #else 34 #define DATA_LE32(data) ((data) & 0xffffffff) 35 #endif 36 37 #define DEFINE_IMAGE_LE64(sym, data) 38 sym##_lo32 = DATA_LE32((data) & 0xffff 39 sym##_hi32 = DATA_LE32((data) >> 32) 40 41 #define __HEAD_FLAG(field) (__HEAD_FLAG_# 42 ARM64_ 43 44 #ifdef CONFIG_CPU_BIG_ENDIAN 45 #define __HEAD_FLAG_BE ARM64_IMAGE_FL 46 #else 47 #define __HEAD_FLAG_BE ARM64_IMAGE_FL 48 #endif 49 50 #define __HEAD_FLAG_PAGE_SIZE ((PAGE_SHIFT - 51 52 #define __HEAD_FLAG_PHYS_BASE 1 53 54 #define __HEAD_FLAGS (__HEAD_FLAG(B 55 __HEAD_FLAG(P 56 __HEAD_FLAG(P 57 58 /* 59 * These will output as part of the Image head 60 * regardless of the endianness of the kernel. 61 * endian swapped in head.S, all are done here 62 */ 63 #define HEAD_SYMBOLS 64 DEFINE_IMAGE_LE64(_kernel_size_le, _en 65 DEFINE_IMAGE_LE64(_kernel_flags_le, __ 66 67 #endif /* __ARM64_KERNEL_IMAGE_H */ 68
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.