/*******************************************************************************
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/*******************************************************************************
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*
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*
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* Filename: cmodram.ld
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* Filename: cmodram.ld
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*
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*
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* Project: Cmod S6 ZipCPU demonstration
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* Project: Cmod S6 ZipCPU demonstration
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*
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*
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* Purpose: This script provides a description of the Cmod S6 Zip CPU
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* Purpose: This script provides a description of the Cmod S6 Zip CPU
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* build for the purposes of where to place memory when linking.
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* build for the purposes of where to place memory when linking.
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*
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*
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* This script is different from the cmod.ld script in that this script
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* This script is different from the cmod.ld script in that this script
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* places specific pieces of code into RAM rather than FLASH. This is to
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* places specific pieces of code into RAM rather than FLASH. This is to
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* speed up those particular pieces of code. This script also depends
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* speed up those particular pieces of code. This script also depends
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* upon a bootloader to load the RAM sections into RAM with their initial
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* upon a bootloader to load the RAM sections into RAM with their initial
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* values.
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* values.
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*
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*
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* Creator: Dan Gisselquist, Ph.D.
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* Creator: Dan Gisselquist, Ph.D.
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* Gisselquist Technology, LLC
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* Gisselquist Technology, LLC
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*
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*
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********************************************************************************
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********************************************************************************
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*
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*
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* Copyright (C) 2016, Gisselquist Technology, LLC
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* Copyright (C) 2016, Gisselquist Technology, LLC
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*
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*
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* This program is free software (firmware): you can redistribute it and/or
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* This program is free software (firmware): you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published
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* modify it under the terms of the GNU General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or (at
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* by the Free Software Foundation, either version 3 of the License, or (at
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* your option) any later version.
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* your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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* ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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* for more details.
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*
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*
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* License: GPL, v3, as defined and found on www.gnu.org,
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* License: GPL, v3, as defined and found on www.gnu.org,
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* http://www.gnu.org/licenses/gpl.html
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* http://www.gnu.org/licenses/gpl.html
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*
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*
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*
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*
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*******************************************************************************/
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*******************************************************************************/
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ENTRY(_start)
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ENTRY(_start)
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MEMORY
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MEMORY
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{
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{
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blkram (wx) : ORIGIN = 0x002000, LENGTH = 0x001000
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blkram (wx) : ORIGIN = 0x0004000, LENGTH = 0x0004000
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flash (rx) : ORIGIN = 0x400000, LENGTH = 0x400000
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flash (rx) : ORIGIN = 0x1000000, LENGTH = 0x1000000
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}
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}
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_top_of_stack = ORIGIN(blkram) + LENGTH(blkram) - 1;
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_flash = ORIGIN(flash);
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_blkram = ORIGIN(blkram);
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_sdram = 0;
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_top_of_stack = ORIGIN(blkram) + LENGTH(blkram) - 4;
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_sdram_image_start = 0;
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_sdram_image_end = 0;
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SECTIONS
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SECTIONS
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{
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{
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. = 0x0480000;
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.rocode 0x1200000 : ALIGN(4) {
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.rocode 0x0480000 : { *(.start)
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_boot_address = .;
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*(.start) *(.boot)
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obj-zip/bootloader.o(.text)
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obj-zip/bootloader.o(.text)
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obj-zip/ksetup.o(.text)
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obj-zip/ksetup.o(.text)
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obj-zip/pipesetup.o(.text)
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obj-zip/pipesetup.o(.text)
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obj-zip/taskp.o(.text)
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obj-zip/taskp.o(.text)
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obj-zip/doorbell.o(.text)
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obj-zip/keypad.o(.text*)
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obj-zip/keypad.o(.text)
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obj-zip/display.o(.text*)
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obj-zip/display.o(.text)
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obj-zip/rtcsim.o(.text*)
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obj-zip/rtcsim.o(.text)
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obj-zip/doorbell.o(.text*)
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*(.rodata*) *(.strings)
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*(.rodata*)
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load_image_start = . ;
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*(.strings*)
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__rocode_alignment = (. + 3) & ~ 3;
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. = __rocode_alignment;
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} > flash
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} > flash
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.ramcode : {
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_kernel_image_start = . ;
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obj-zip/kernel.o(.text)
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.ramcode : ALIGN_WITH_INPUT {
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obj-zip/syspipe.o(.text)
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obj-zip/kernel.o(.text*)
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obj-zip/syspipe.o(.text*)
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} > blkram AT> flash
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} > blkram AT> flash
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.data : { *(.fixdata) *(.data) *(COMMON)
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.data : ALIGN_WITH_INPUT {
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load_image_end = . ;
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*(.kernel*)
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*(.fixdata*)
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*(.data*)
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*(COMMON*)
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_kernel_image_end = . ;
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} > blkram AT> flash
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} > blkram AT> flash
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.bss : { *(.bss) bss_image_end = . ; } > blkram
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_blkram_image_end = . ;
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.bss : ALIGN_WITH_INPUT {
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*(.bss*)
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_bss_image_end = . ;
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} > blkram
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_top_of_heap = .;
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_top_of_heap = .;
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}
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}
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