ram.lcf

实现MODBUS RTU的完整代码

#
# FreeModbus Libary: MCF5235 Demo Application
# Copyright (C) 2007 Christian Walter <[e-mail]>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
#    derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# File: $Id: ram.lcf,v 1.1 2007/02/19 00:56:14 wolti Exp $
#

MEMORY 
{
    ext_flash   (RWX) : ORIGIN = 0x00000000, LENGTH = 0x0
    sdram       (RWX) : ORIGIN = 0x10000000, LENGTH = 0x0
    vector_ram  (RWX) : ORIGIN = 0x10000000, LENGTH = 0x0
    user        (RWX) : ORIGIN = 0x10000500, LENGTH = 0x0
    sram        (RWX) : ORIGIN = 0x20000000, LENGTH = 0x0
    ipsbar      (RWX) : ORIGIN = 0x40000000, LENGTH = 0x0
}

SECTIONS 
{
    .sdram      : {} > sdram
    .vector_ram : {} > vector_ram
    .ipsbar     : {} > ipsbar
    .sram       : {} > sram
    .ext_flash  : {} > ext_flash
    
    .vectors :
    {
        . = ALIGN (0x4);
    } > user

    .text :
    {
        . = ALIGN (0x4);
        *(.text)
        . = ALIGN (0x4);
        *(.rodata)
        . = ALIGN (0x4);        
    } >> user

    .data : 
    {
        ___sinit__ = .;
        STATICINIT

        __START_DATA = .;
        *(.data)
        __END_DATA = .;

        __START_SDATA = .;
        *(.sdata)
        __END_SDATA = .;
        __SDA_BASE = .;
        . = ALIGN (0x4);        
        
    } >> user

    .bss :
    {
        __START_SBSS = .;
        *(.sbss)
        *(SCOMMON)
        __END_SBSS = .;

        __START_BSS = .;
        *(.bss)
        *(COMMON)
        __END_BSS = .;  
        . = ALIGN(0x4);
    } >> user
    
    .custom :
    {

        ___HEAP_START   = .;
        ___HEAP_END     = ___HEAP_START + 0x10000;
        ___SP_END       = ___HEAP_END;
        ___SP_INIT      = ___SP_END + 0x4000;

        .               = ALIGN (0x4);
    } >> user
    
    ___IPSBAR           = ADDR(.ipsbar);
    ___VECTOR_RAM       = ADDR(.vector_ram);

    ___SDRAM            = ADDR(.sdram);
    ___SDRAM_SIZE       = 0x01000000;

    ___SRAM             = ADDR(.sram);
    ___SRAM_SIZE        = 0x00010000;

    ___EXT_FLASH        = ADDR(.ext_flash);
    ___EXT_FLASH_SIZE   = 0x00200000;
    
    ___heap_addr    = ___HEAP_START;
    ___heap_size    = 0x10000;
    __SP_INIT       = ___SP_INIT;
    __S_romp        = 0x0;
    
}