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