arch/powerpc/cpu/ppc4xx/u-boot.lds

   1 /*
   2  * Copyright 2007-2009 Freescale Semiconductor, Inc.
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include "config.h"     /* CONFIG_BOARDDIR */
  24
  25 #ifndef RESET_VECTOR_ADDRESS
  26 #ifdef CONFIG_RESET_VECTOR_ADDRESS
  27 #define RESET_VECTOR_ADDRESS    CONFIG_RESET_VECTOR_ADDRESS
  28 #else
  29 #define RESET_VECTOR_ADDRESS    0xfffffffc
  30 #endif
  31 #endif
  32
  33 OUTPUT_ARCH(powerpc)
  34
  35 PHDRS
  36 {
  37   text PT_LOAD;
  38   bss PT_LOAD;
  39 }
  40
  41 SECTIONS
  42 {
  43   /* Read-only sections, merged into text segment: */
  44   . = + SIZEOF_HEADERS;
  45   .text      :
  46   {
  47     *(.text*)
  48    } :text
  49     _etext = .;
  50     PROVIDE (etext = .);
  51     .rodata    :
  52    {
  53     *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
  54   } :text
  55
  56   /* Read-write section, merged into data segment: */
  57   . = (. + 0x00FF) & 0xFFFFFF00;
  58   _erotext = .;
  59   PROVIDE (erotext = .);
  60   .reloc   :
  61   {
  62     KEEP(*(.got))
  63     _GOT2_TABLE_ = .;
  64     KEEP(*(.got2))
  65     _FIXUP_TABLE_ = .;
  66     KEEP(*(.fixup))
  67   }
  68   __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >> 2;
  69   __fixup_entries = (. - _FIXUP_TABLE_) >> 2;
  70
  71   .data    :
  72   {
  73     *(.data*)
  74     *(.sdata*)
  75   }
  76   _edata  =  .;
  77   PROVIDE (edata = .);
  78
  79   . = .;
  80   __u_boot_cmd_start = .;
  81   .u_boot_cmd : { *(.u_boot_cmd) }
  82   __u_boot_cmd_end = .;
  83
  84   . = .;
  85   __start___ex_table = .;
  86   __ex_table : { *(__ex_table) }
  87   __stop___ex_table = .;
  88
  89   . = ALIGN(256);
  90   __init_begin = .;
  91   .text.init : { *(.text.init) }
  92   .data.init : { *(.data.init) }
  93   . = ALIGN(256);
  94   __init_end = .;
  95
  96 #ifdef CONFIG_440
  97   .bootpg RESET_VECTOR_ADDRESS - 0xffc :
  98   {
  99     arch/powerpc/cpu/ppc4xx/start.o     (.bootpg)
 100
 101     /*
 102      * PPC440 board need a board specific object with the
 103      * TLB definitions. This needs to get included right after
 104      * start.o, since the first shadow TLB only covers 4k
 105      * of address space.
 106      */
 107 #ifdef CONFIG_INIT_TLB
 108     CONFIG_INIT_TLB (.bootpg)
 109 #else
 110     CONFIG_BOARDDIR/init.o      (.bootpg)
 111 #endif
 112   } :text = 0xffff
 113 #endif
 114
 115   .resetvec RESET_VECTOR_ADDRESS :
 116   {
 117     KEEP(*(.resetvec))
 118   } :text = 0xffff
 119
 120   . = RESET_VECTOR_ADDRESS + 0x4;
 121
 122   /*
 123    * Make sure that the bss segment isn't linked at 0x0, otherwise its
 124    * address won't be updated during relocation fixups.  Note that
 125    * this is a temporary fix.  Code to dynamically the fixup the bss
 126    * location will be added in the future.  When the bss relocation
 127    * fixup code is present this workaround should be removed.
 128    */
 129 #if (RESET_VECTOR_ADDRESS == 0xfffffffc)
 130   . |= 0x10;
 131 #endif
 132
 133   __bss_start = .;
 134   .bss (NOLOAD)       :
 135   {
 136    *(.bss*)
 137    *(.sbss*)
 138    *(COMMON)
 139   } :bss
 140
 141   . = ALIGN(4);
 142   _end = . ;
 143   PROVIDE (end = .);
 144 }