u-boot.lds.s

U-boot源码 ARM7启动代码

/*
 * U-boot - u-boot.lds.S
 *
 * Copyright (c) 2005-2007 Analog Device Inc.
 *
 * (C) Copyright 2000-2004
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <config.h>

OUTPUT_ARCH(bfin)
SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib);
/* Do we need any of these for elf?
   __DYNAMIC = 0;    */
MEMORY
 {
 ram :	   ORIGIN = (CFG_MONITOR_BASE), LENGTH = (256 * 1024)
 l1_code : ORIGIN = 0xFFA00000, LENGTH = 0xC000
 l1_data : ORIGIN = 0xFF900000, LENGTH = 0x4000
 }

SECTIONS
{
  /* Read-only sections, merged into text segment: */
  . = + SIZEOF_HEADERS; /*0x1000;*/
  .interp : { *(.interp) }
  .hash          : { *(.hash)		}
  .dynsym        : { *(.dynsym)		}
  .dynstr        : { *(.dynstr)		}
  .rel.text      : { *(.rel.text)	}
  .rela.text     : { *(.rela.text)	}
  .rel.data      : { *(.rel.data)	}
  .rela.data     : { *(.rela.data)	}
  .rel.rodata    : { *(.rel.rodata)	}
  .rela.rodata   : { *(.rela.rodata)	}
  .rel.got       : { *(.rel.got)	}
  .rela.got      : { *(.rela.got)	}
  .rel.ctors     : { *(.rel.ctors)	}
  .rela.ctors    : { *(.rela.ctors)	}
  .rel.dtors     : { *(.rel.dtors)	}
  .rela.dtors    : { *(.rela.dtors)	}
  .rel.bss       : { *(.rel.bss)	}
  .rela.bss      : { *(.rela.bss)	}
  .rel.plt       : { *(.rel.plt)	}
  .rela.plt      : { *(.rela.plt)	}
  .init          : { *(.init)		}
  .plt : { *(.plt) }
  . = CFG_MONITOR_BASE;
  .text      :
  {
    /* WARNING - the following is hand-optimized to fit within	*/
    /* the sector before the environment sector. If it throws	*/
    /* an error during compilation remove an object here to get	*/
    /* it linked after the configuration sector.		*/

    cpu/bf537/start.o		(.text)
    cpu/bf537/start1.o		(.text)
    cpu/bf537/traps.o		(.text)
    cpu/bf537/interrupt.o	(.text)
    cpu/bf537/serial.o		(.text)
    common/dlmalloc.o		(.text)
/*  lib_blackfin/bf533_string.o	(.text) */
/*  lib_generic/vsprintf.o	(.text) */
    lib_generic/crc32.o		(.text)
/*  lib_generic/zlib.o		(.text) */
/*  board/bf537-stamp/bf537-stamp.o		(.text) */

    . = DEFINED(env_offset) ? env_offset : .;
    common/environment.o	(.text)

    *(EXCLUDE_FILE (board/bf537-stamp/post-memory.o) .text)
    *(.fixup)
    *(.got1)
  }  > ram
  _etext = .;
  PROVIDE (etext = .);
  .text_l1	:
  {
  . = ALIGN(4) ;
  _text_l1 = .;
  PROVIDE (text_l1 = .);
  board/bf537-stamp/post-memory.o   (.text)
  . = ALIGN(4) ;
  _etext_l1 = .;
  PROVIDE (etext_l1 = .);
  } > l1_code AT > ram

  .rodata :
  {
    . = ALIGN(4);
    *(EXCLUDE_FILE (board/bf537-stamp/post-memory.o) .rodata)
    *(EXCLUDE_FILE (board/bf537-stamp/post-memory.o) .rodata1)
    *(EXCLUDE_FILE (board/bf537-stamp/post-memory.o) .rodata.str1.4)
    *(.eh_frame)
    . = ALIGN(4);
  } > ram

  . = ALIGN(4);
  _erodata = .;
  PROVIDE (erodata = .);
  .rodata_l1 :
 {
   . = ALIGN(4) ;
   _rodata_l1 = .;
   PROVIDE (rodata_l1 = .);
   board/bf537-stamp/post-memory.o (.rodata)
   board/bf537-stamp/post-memory.o (.rodata1)
   board/bf537-stamp/post-memory.o (.rodata.str1.4)
   . = ALIGN(4) ;
   _erodata_l1 = .;
   PROVIDE(erodata_l1 = .);
 } > l1_data AT > ram

  .fini      : { *(.fini)    } =0
  .ctors     : { *(.ctors)   }
  .dtors     : { *(.dtors)   }

  /* Read-write section, merged into data segment: */
  . = (. + 0x00FF) & 0xFFFFFF00;
  _erotext = .;
  PROVIDE (erotext = .);
  .reloc   :
  {
    *(.got)
    _GOT2_TABLE_ = .;
    *(.got2)
    _FIXUP_TABLE_ = .;
    *(.fixup)
  }
  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
  __fixup_entries = (. - _FIXUP_TABLE_)>>2;

  .data    :
  {
    *(.data)
    *(.data1)
    *(.sdata)
    *(.sdata2)
    *(.dynamic)
    CONSTRUCTORS
  } > ram
  _edata  =  .;
  PROVIDE (edata = .);

  ___u_boot_cmd_start = .;
  .u_boot_cmd : { *(.u_boot_cmd) } > ram
  ___u_boot_cmd_end = .;


  __start___ex_table = .;
  __ex_table : { *(__ex_table) }
  __stop___ex_table = .;

  . = ALIGN(256);
  __init_begin = .;
  .text.init : { *(.text.init) }
  .data.init : { *(.data.init) }
  . = ALIGN(256);
  __init_end = .;

  .bss       :
  {
  __bss_start = .;
   *(.sbss) *(.scommon)
   *(.dynbss)
   *(.bss)
   *(COMMON)
  } > ram
  _end = . ;
  PROVIDE (end = .);
}