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 *(.fixup) 40 *(.gnu.warning) 41 *(.glue_7t) 42 *(.glue_7) 43 } 44 .table : ALIGN(4) { 45 _table_start = .; 46 LONG(ZIMAGE_MAGIC(2)) 47 LONG(ZIMAGE_MAGIC(0x5a534c4b)) 48 LONG(ZIMAGE_MAGIC(__piggy_size_addr - _start)) 49 LONG(ZIMAGE_MAGIC(_kernel_bss_size)) 50 LONG(0) 51 _table_end = .; 52 } 53 .rodata : { 54 *(.rodata) 55 *(.rodata.*) 56 *(.data.rel.ro) 57 } 58 .piggydata : { 59 *(.piggydata) 60 __piggy_size_addr = . - 4; 61 } 62 63 . = ALIGN(4); 64 _etext = .; 65 66 .got.plt : { *(.got.plt) } 67 _got_start = .; 68 .got : { *(.got) } 69 _got_end = .; 70 71 /* ensure the zImage file size is always a multiple of 64 bits */ 72 /* (without a dummy byte, ld just ignores the empty section) */ 73 .pad : { BYTE(0); . = ALIGN(8); } 74 75#ifdef CONFIG_EFI_STUB 76 .data : ALIGN(4096) { 77 __pecoff_data_start = .; 78 /* 79 * The EFI stub always executes from RAM, and runs strictly before the 80 * decompressor, so we can make an exception for its r/w data, and keep it 81 */ 82 *(.data.efistub) 83 __pecoff_data_end = .; 84 85 /* 86 * PE/COFF mandates a file size which is a multiple of 512 bytes if the 87 * section size equals or exceeds 4 KB 88 */ 89 . = ALIGN(512); 90 } 91 __pecoff_data_rawsize = . - ADDR(.data); 92#endif 93 94 _edata = .; 95 96 /* 97 * The image_end section appears after any additional loadable sections 98 * that the linker may decide to insert in the binary image. Having 99 * this symbol allows further debug in the near future. 100 */ 101 .image_end (NOLOAD) : { 102 /* 103 * EFI requires that the image is aligned to 512 bytes, and appended 104 * DTB requires that we know where the end of the image is. Ensure 105 * that both are satisfied by ensuring that there are no additional 106 * sections emitted into the decompressor image. 107 */ 108 _edata_real = .; 109 } 110 111 _magic_sig = ZIMAGE_MAGIC(0x016f2818); 112 _magic_start = ZIMAGE_MAGIC(_start); 113 _magic_end = ZIMAGE_MAGIC(_edata); 114 _magic_table = ZIMAGE_MAGIC(_table_start - _start); 115 116 . = BSS_START; 117 __bss_start = .; 118 .bss : { *(.bss) } 119 _end = .; 120 121 . = ALIGN(8); /* the stack must be 64-bit aligned */ 122 .stack : { *(.stack) } 123 124 PROVIDE(__pecoff_data_size = ALIGN(512) - ADDR(.data)); 125 PROVIDE(__pecoff_end = ALIGN(512)); 126 127 .stab 0 : { *(.stab) } 128 .stabstr 0 : { *(.stabstr) } 129 .stab.excl 0 : { *(.stab.excl) } 130 .stab.exclstr 0 : { *(.stab.exclstr) } 131 .stab.index 0 : { *(.stab.index) } 132 .stab.indexstr 0 : { *(.stab.indexstr) } 133 .comment 0 : { *(.comment) } 134} 135ASSERT(_edata_real == _edata, "error: zImage file size is incorrect"); 136