Subversion Repositories s6soc

/*******************************************************************************
*
* Filename:     cmodram.ld
*
* Project:      Cmod S6 ZipCPU demonstration
*
* Purpose:      This script provides a description of the Cmod S6 Zip CPU
*               build for the purposes of where to place memory when linking.
*
*       This script is different from the cmod.ld script in that this script
*       places specific pieces of code into RAM rather than FLASH.  This is to
*       speed up those particular pieces of code.  This script also depends
*       upon a bootloader to load the RAM sections into RAM with their initial
*       values.
*
* Creator:      Dan Gisselquist, Ph.D.
*               Gisselquist Technology, LLC
*
********************************************************************************
*
* Copyright (C) 2016, Gisselquist Technology, LLC
*
* This program is free software (firmware): 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 3 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 MERCHANTIBILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* for more details.
*
* License:      GPL, v3, as defined and found on www.gnu.org,
*               http://www.gnu.org/licenses/gpl.html
*
*
*******************************************************************************/

ENTRY(_start)

MEMORY
{
        blkram (wx) : ORIGIN = 0x0004000, LENGTH = 0x0004000
        flash  (rx) : ORIGIN = 0x1000000, LENGTH = 0x1000000
}

_flash  = ORIGIN(flash);
_blkram = ORIGIN(blkram);
_sdram  = 0;
_top_of_stack = ORIGIN(blkram) + LENGTH(blkram) - 4;
_sdram_image_start = 0;
_sdram_image_end   = 0;

SECTIONS
{
        .rocode 0x1200000 : ALIGN(4) {
                _boot_address = .;
                *(.start) *(.boot)
                obj-zip/bootloader.o(.text)
                obj-zip/ksetup.o(.text)
                obj-zip/pipesetup.o(.text)
                obj-zip/taskp.o(.text)
                obj-zip/keypad.o(.text*)
                obj-zip/display.o(.text*)
                obj-zip/rtcsim.o(.text*)
                obj-zip/doorbell.o(.text*)
                *(.rodata*)
                *(.strings*)
                __rocode_alignment = (. + 3) & ~ 3;
                . = __rocode_alignment;
                } > flash
        _kernel_image_start = . ;
        .ramcode : ALIGN_WITH_INPUT {
                obj-zip/kernel.o(.text*)
                obj-zip/syspipe.o(.text*)
                } > blkram AT> flash
        .data : ALIGN_WITH_INPUT {
                *(.kernel*)
                *(.fixdata*)
                *(.data*)
                *(COMMON*)
                _kernel_image_end = . ;
                }> blkram AT> flash
        _blkram_image_end = . ;
        .bss : ALIGN_WITH_INPUT {
                *(.bss*)
                _bss_image_end = . ;
                } > blkram
        _top_of_heap = .;
}