arch/arc/kernel/vmlinux.lds.S

   1 /*
   2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   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 #include <asm-generic/vmlinux.lds.h>
  10 #include <asm/cache.h>
  11 #include <asm/page.h>
  12 #include <asm/thread_info.h>
  13
  14 OUTPUT_ARCH(arc)
  15 ENTRY(res_service)
  16
  17 #ifdef CONFIG_CPU_BIG_ENDIAN
  18 jiffies = jiffies_64 + 4;
  19 #else
  20 jiffies = jiffies_64;
  21 #endif
  22
  23 SECTIONS
  24 {
  25         /*
  26          * ICCM starts at 0x8000_0000. So if kernel is relocated to some other
  27          * address, make sure peripheral at 0x8z doesn't clash with ICCM
  28          * Essentially vector is also in ICCM.
  29          */
  30
  31         . = CONFIG_LINUX_LINK_BASE;
  32
  33         _int_vec_base_lds = .;
  34         .vector : {
  35                 *(.vector)
  36                 . = ALIGN(PAGE_SIZE);
  37         }
  38
  39 #ifdef CONFIG_ARC_HAS_ICCM
  40         .text.arcfp : {
  41                 *(.text.arcfp)
  42                 . = ALIGN(CONFIG_ARC_ICCM_SZ * 1024);
  43         }
  44 #endif
  45
  46         /*
  47          * The reason for having a seperate subsection .init.ramfs is to
  48          * prevent objump from including it in kernel dumps
  49          *
  50          * Reason for having .init.ramfs above .init is to make sure that the
  51          * binary blob is tucked away to one side, reducing the displacement
  52          * between .init.text and .text, avoiding any possible relocation
  53          * errors because of calls from .init.text to .text
  54          * Yes such calls do exist. e.g.
  55          *      decompress_inflate.c:gunzip( ) -> zlib_inflate_workspace( )
  56          */
  57
  58         __init_begin = .;
  59
  60         .init.ramfs : { INIT_RAM_FS }
  61
  62         . = ALIGN(PAGE_SIZE);
  63         _stext = .;
  64
  65         HEAD_TEXT_SECTION
  66         INIT_TEXT_SECTION(L1_CACHE_BYTES)
  67
  68         /* INIT_DATA_SECTION open-coded: special INIT_RAM_FS handling */
  69         .init.data : {
  70                 INIT_DATA
  71                 INIT_SETUP(L1_CACHE_BYTES)
  72                 INIT_CALLS
  73                 CON_INITCALL
  74                 SECURITY_INITCALL
  75         }
  76
  77         .init.arch.info : {
  78                 __arch_info_begin = .;
  79                 *(.arch.info.init)
  80                 __arch_info_end = .;
  81         }
  82
  83         PERCPU_SECTION(L1_CACHE_BYTES)
  84
  85         /*
  86          * .exit.text is discard at runtime, not link time, to deal with
  87          * references from .debug_frame
  88          * It will be init freed, being inside [__init_start : __init_end]
  89          */
  90         .exit.text : { EXIT_TEXT }
  91         .exit.data : { EXIT_DATA }
  92
  93         . = ALIGN(PAGE_SIZE);
  94         __init_end = .;
  95
  96         .text : {
  97                 _text = .;
  98                 TEXT_TEXT
  99                 SCHED_TEXT
 100                 LOCK_TEXT
 101                 KPROBES_TEXT
 102                 *(.fixup)
 103                 *(.gnu.warning)
 104         }
 105         EXCEPTION_TABLE(L1_CACHE_BYTES)
 106         _etext = .;
 107
 108         _sdata = .;
 109         RO_DATA_SECTION(PAGE_SIZE)
 110
 111         /*
 112          * 1. this is .data essentially
 113          * 2. THREAD_SIZE for init.task, must be kernel-stk sz aligned
 114          */
 115         RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 116
 117         _edata = .;
 118
 119         BSS_SECTION(4, 4, 4)
 120
 121 #ifdef CONFIG_ARC_DW2_UNWIND
 122         . = ALIGN(PAGE_SIZE);
 123         .debug_frame  : {
 124                 __start_unwind = .;
 125                 *(.debug_frame)
 126                 __end_unwind = .;
 127         }
 128         /*
 129          * gcc 4.8 generates this for -fasynchonous-unwind-tables,
 130          * while we still use the .debug_frame based unwinder
 131          */
 132         /DISCARD/ : {   *(.eh_frame) }
 133 #else
 134         /DISCARD/ : {   *(.debug_frame) }
 135 #endif
 136
 137         NOTES
 138
 139         . = ALIGN(PAGE_SIZE);
 140         _end = . ;
 141
 142         STABS_DEBUG
 143         DISCARDS
 144
 145         .arcextmap 0 : {
 146                 *(.gnu.linkonce.arcextmap.*)
 147                 *(.arcextmap.*)
 148         }
 149
 150 #ifndef CONFIG_DEBUG_INFO
 151         /* open-coded because we need .debug_frame seperately for unwinding */
 152         /DISCARD/ : { *(.debug_aranges) }
 153         /DISCARD/ : { *(.debug_pubnames) }
 154         /DISCARD/ : { *(.debug_info) }
 155         /DISCARD/ : { *(.debug_abbrev) }
 156         /DISCARD/ : { *(.debug_line) }
 157         /DISCARD/ : { *(.debug_str) }
 158         /DISCARD/ : { *(.debug_loc) }
 159         /DISCARD/ : { *(.debug_macinfo) }
 160         /DISCARD/ : { *(.debug_ranges) }
 161 #endif
 162
 163 #ifdef CONFIG_ARC_HAS_DCCM
 164         . = CONFIG_ARC_DCCM_BASE;
 165         __arc_dccm_base = .;
 166         .data.arcfp : {
 167                 *(.data.arcfp)
 168         }
 169         . = ALIGN(CONFIG_ARC_DCCM_SZ * 1024);
 170 #endif
 171 }