1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2000 Russell King 4 */ 5 6#ifdef CONFIG_CPU_ENDIAN_BE8 7#define ZIMAGE_MAGIC(x) ( (((x) >> 24) & 0x000000ff) | \ 8 (((x) >> 8) & 0x0000ff00) | \ 9 (((x) << 8) & 0x00ff0000) | \ 10 (((x) << 24) & 0xff000000) ) 11#else 12#define ZIMAGE_MAGIC(x) (x) 13#endif 14 15OUTPUT_ARCH(arm) 16ENTRY(_start) 17SECTIONS 18{ 19 /DISCARD/ : { 20 *(.ARM.exidx*) 21 *(.ARM.extab*) 22 /* 23 * Discard any r/w data - this produces a link error if we have any, 24 * which is required for PIC decompression. Local data generates 25 * GOTOFF relocations, which prevents it being relocated independently 26 * of the text/got segments. 27 */ 28 *(.data) 29 } 30 31 . = TEXT_START; 32 _text = .; 33 34 .text : { 35 _start = .; 36 *(.start) 37 *(.text) 38 *(.text.*) 39 *(.gnu.warning) 40 *(.glue_7t) 41 *(.glue_7) 42 } 43 .table : ALIGN(4) { 44 _table_start = .; 45 LONG(ZIMAGE_MAGIC(4)) 46 LONG(ZIMAGE_MAGIC(0x5a534c4b)) 47 LONG(ZIMAGE_MAGIC(__piggy_size_addr - _start)) 48 LONG(ZIMAGE_MAGIC(_kernel_bss_size)) 49 LONG(0) 50 _table_end = .; 51 } 52 .rodata : { 53 *(.rodata) 54 *(.rodata.*) 55 *(.data.rel.ro) 56 } 57 .piggydata : { 58 *(.piggydata) 59 __piggy_size_addr = . - 4; 60 } 61 62 . = ALIGN(4); 63 _etext = .; 64 65 .got.plt : { *(.got.plt) } 66#ifndef CONFIG_EFI_STUB 67 _got_start = .; 68 .got : { *(.got) } 69 _got_end = .; 70#endif 71 72 /* ensure the zImage file size is always a multiple of 64 bits */ 73 /* (without a dummy byte, ld just ignores the empty section) */ 74 .pad : { BYTE(0); . = ALIGN(8); } 75 76#ifdef CONFIG_EFI_STUB 77 .data : ALIGN(4096) { 78 __pecoff_data_start = .; 79 _got_start = .; 80 *(.got) 81 _got_end = .; 82 /* 83 * The EFI stub always executes from RAM, and runs strictly before the 84 * decompressor, so we can make an exception for its r/w data, and keep it 85 */ 86 *(.data.efistub .bss.efistub) 87 __pecoff_data_end = .; 88 89 /* 90 * PE/COFF mandates a file size which is a multiple of 512 bytes if the 91 * section size equals or exceeds 4 KB 92 */ 93 . = ALIGN(512); 94 } 95 __pecoff_data_rawsize = . - ADDR(.data); 96#endif 97 98 _edata = .; 99 100 /* 101 * The image_end section appears after any additional loadable sections 102 * that the linker may decide to insert in the binary image. Having 103 * this symbol allows further debug in the near future. 104 */ 105 .image_end (NOLOAD) : { 106 /* 107 * EFI requires that the image is aligned to 512 bytes, and appended 108 * DTB requires that we know where the end of the image is. Ensure 109 * that both are satisfied by ensuring that there are no additional 110 * sections emitted into the decompressor image. 111 */ 112 _edata_real = .; 113 } 114 115 _magic_sig = ZIMAGE_MAGIC(0x016f2818); 116 _magic_start = ZIMAGE_MAGIC(_start); 117 _magic_end = ZIMAGE_MAGIC(_edata); 118 _magic_table = ZIMAGE_MAGIC(_table_start - _start); 119 120 . = BSS_START; 121 __bss_start = .; 122 .bss : { *(.bss) } 123 _end = .; 124 125 . = ALIGN(8); /* the stack must be 64-bit aligned */ 126 .stack : { *(.stack) } 127 128 PROVIDE(__pecoff_data_size = ALIGN(512) - ADDR(.data)); 129 PROVIDE(__pecoff_end = ALIGN(512)); 130 131 .stab 0 : { *(.stab) } 132 .stabstr 0 : { *(.stabstr) } 133 .stab.excl 0 : { *(.stab.excl) } 134 .stab.exclstr 0 : { *(.stab.exclstr) } 135 .stab.index 0 : { *(.stab.index) } 136 .stab.indexstr 0 : { *(.stab.indexstr) } 137 .comment 0 : { *(.comment) } 138} 139ASSERT(_edata_real == _edata, "error: zImage file size is incorrect"); 140