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");