arch/arm/kernel/vmlinux.lds.S

   1 /* ld script to make ARM Linux kernel
   2  * taken from the i386 version by Russell King
   3  * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
   4  */
   5
   6 #include <asm-generic/vmlinux.lds.h>
   7 #include <asm/thread_info.h>
   8 #include <asm/memory.h>
   9
  10 OUTPUT_ARCH(arm)
  11 ENTRY(stext)
  12
  13 #ifndef __ARMEB__
  14 jiffies = jiffies_64;
  15 #else
  16 jiffies = jiffies_64 + 4;
  17 #endif
  18
  19 SECTIONS
  20 {
  21 #ifdef CONFIG_XIP_KERNEL
  22         . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
  23 #else
  24         . = PAGE_OFFSET + TEXT_OFFSET;
  25 #endif
  26         .text.head : {
  27                 _stext = .;
  28                 _sinittext = .;
  29                 *(.text.head)
  30         }
  31
  32         .init : {                       /* Init code and data           */
  33                         *(.init.text)
  34                 _einittext = .;
  35                 __proc_info_begin = .;
  36                         *(.proc.info.init)
  37                 __proc_info_end = .;
  38                 __arch_info_begin = .;
  39                         *(.arch.info.init)
  40                 __arch_info_end = .;
  41                 __tagtable_begin = .;
  42                         *(.taglist.init)
  43                 __tagtable_end = .;
  44                 . = ALIGN(16);
  45                 __setup_start = .;
  46                         *(.init.setup)
  47                 __setup_end = .;
  48                 __early_begin = .;
  49                         *(.early_param.init)
  50                 __early_end = .;
  51                 __initcall_start = .;
  52                         INITCALLS
  53                 __initcall_end = .;
  54                 __con_initcall_start = .;
  55                         *(.con_initcall.init)
  56                 __con_initcall_end = .;
  57                 __security_initcall_start = .;
  58                         *(.security_initcall.init)
  59                 __security_initcall_end = .;
  60 #ifdef CONFIG_BLK_DEV_INITRD
  61                 . = ALIGN(32);
  62                 __initramfs_start = .;
  63                         usr/built-in.o(.init.ramfs)
  64                 __initramfs_end = .;
  65 #endif
  66                 . = ALIGN(4096);
  67                 __per_cpu_start = .;
  68                         *(.data.percpu)
  69                 __per_cpu_end = .;
  70 #ifndef CONFIG_XIP_KERNEL
  71                 __init_begin = _stext;
  72                 *(.init.data)
  73                 . = ALIGN(4096);
  74                 __init_end = .;
  75 #endif
  76         }
  77
  78         /DISCARD/ : {                   /* Exit code and data           */
  79                 *(.exit.text)
  80                 *(.exit.data)
  81                 *(.exitcall.exit)
  82 #ifndef CONFIG_MMU
  83                 *(.fixup)
  84                 *(__ex_table)
  85 #endif
  86         }
  87
  88         .text : {                       /* Real text segment            */
  89                 _text = .;              /* Text and read-only data      */
  90                         __exception_text_start = .;
  91                         *(.exception.text)
  92                         __exception_text_end = .;
  93                         TEXT_TEXT
  94                         SCHED_TEXT
  95                         LOCK_TEXT
  96 #ifdef CONFIG_MMU
  97                         *(.fixup)
  98 #endif
  99                         *(.gnu.warning)
 100                         *(.rodata)
 101                         *(.rodata.*)
 102                         *(.glue_7)
 103                         *(.glue_7t)
 104                 *(.got)                 /* Global offset table          */
 105         }
 106
 107         RODATA
 108
 109         _etext = .;                     /* End of text and rodata section */
 110
 111 #ifdef CONFIG_XIP_KERNEL
 112         __data_loc = ALIGN(4);          /* location in binary */
 113         . = PAGE_OFFSET + TEXT_OFFSET;
 114 #else
 115         . = ALIGN(THREAD_SIZE);
 116         __data_loc = .;
 117 #endif
 118
 119         .data : AT(__data_loc) {
 120                 __data_start = .;       /* address in memory */
 121
 122                 /*
 123                  * first, the init task union, aligned
 124                  * to an 8192 byte boundary.
 125                  */
 126                 *(.data.init_task)
 127
 128 #ifdef CONFIG_XIP_KERNEL
 129                 . = ALIGN(4096);
 130                 __init_begin = .;
 131                 *(.init.data)
 132                 . = ALIGN(4096);
 133                 __init_end = .;
 134 #endif
 135
 136                 . = ALIGN(4096);
 137                 __nosave_begin = .;
 138                 *(.data.nosave)
 139                 . = ALIGN(4096);
 140                 __nosave_end = .;
 141
 142                 /*
 143                  * then the cacheline aligned data
 144                  */
 145                 . = ALIGN(32);
 146                 *(.data.cacheline_aligned)
 147
 148                 /*
 149                  * The exception fixup table (might need resorting at runtime)
 150                  */
 151                 . = ALIGN(32);
 152                 __start___ex_table = .;
 153 #ifdef CONFIG_MMU
 154                 *(__ex_table)
 155 #endif
 156                 __stop___ex_table = .;
 157
 158                 /*
 159                  * and the usual data section
 160                  */
 161                 DATA_DATA
 162                 CONSTRUCTORS
 163
 164                 _edata = .;
 165         }
 166         _edata_loc = __data_loc + SIZEOF(.data);
 167
 168         .bss : {
 169                 __bss_start = .;        /* BSS                          */
 170                 *(.bss)
 171                 *(COMMON)
 172                 _end = .;
 173         }
 174                                         /* Stabs debugging sections.    */
 175         .stab 0 : { *(.stab) }
 176         .stabstr 0 : { *(.stabstr) }
 177         .stab.excl 0 : { *(.stab.excl) }
 178         .stab.exclstr 0 : { *(.stab.exclstr) }
 179         .stab.index 0 : { *(.stab.index) }
 180         .stab.indexstr 0 : { *(.stab.indexstr) }
 181         .comment 0 : { *(.comment) }
 182 }
 183
 184 /*
 185  * These must never be empty
 186  * If you have to comment these two assert statements out, your
 187  * binutils is too old (for other reasons as well)
 188  */
 189 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
 190 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")