Add header. Add stack definition and allocate it. Remove unneeded code. Add comments.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@880 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/cpu/arm/scripts/sam7s256_rom.ld b/cpu/arm/scripts/sam7s256_rom.ld
index 9ab818580e59463a1296e162e253baa307717fc7..6dc69c75f18cdeb95958ffdb3b22fcffa058e6df 100644 (file)
--- a/cpu/arm/scripts/sam7s256_rom.ld
+++ b/cpu/arm/scripts/sam7s256_rom.ld
@@ -38,19 +38,74 @@
  *
  */
 
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2007 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \version $Id: sysirq_at91.c 18273 2007-10-11 14:53:02Z batt $
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * \brief Script linker for Atmel AT91 SAM7S256 processors.
+ *
+ */
+
 
 ENTRY(ResetHandler)
-STARTUP(crtat91sam7x256_rom.o)  /* DA SOSTITUIRE */
 SEARCH_DIR(.)
 OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
 OUTPUT_ARCH(arm)
 
+
+/*
+ * Define stack size here
+ */
+FIQ_STACK_SIZE = 0x0100;
+IRQ_STACK_SIZE = 0x0100;
+ABT_STACK_SIZE = 0x0100;
+UND_STACK_SIZE = 0x0100;
+SVC_STACK_SIZE = 0x0400;
+
+/*
+ * Define memory configuration for AT91SAM7S
+ */
 MEMORY
 {
   rom(rx) : org = 0x00000000, len = 256k
   ram(rw) : org = 0x00200000, len = 64k
 }
 
+/*
+ * Allocate section memory
+ */
 SECTIONS
 {
     .text :
@@ -59,14 +114,9 @@ SECTIONS
            . = ALIGN ( 4 );
            * ( .init );
            . = ALIGN ( 4 );
-           * ( .rodata );
-           . = ALIGN ( 4 );
-           * ( .rodata* );
-           . = ALIGN ( 4 );
        } > rom
 
        . = ALIGN ( 4 );
-
        _etext = .;
        PROVIDE ( __etext = . );
 
@@ -75,24 +125,54 @@ SECTIONS
                PROVIDE ( __data_start = . );
                * ( .data )
                . = ALIGN ( 4 );
-               * ( .ramfunc )
                _edata = .;
                PROVIDE ( __data_end = . );
        }
        > ram
 
+/*
+ * Allocate bss section and stack.
+ */
        .bss :
        {
-               PROVIDE ( __bss_start = . );
-               * ( .bss )
-               * ( COMMON )
-               . = ALIGN ( 4 );
-               PROVIDE ( __bss_end = . );
-               . += 0x400;
-               PROVIDE ( __exp_stack = . );
-               . += 0x400;
-               PROVIDE ( __stack = . );
-               PROVIDE ( __heap_start = . );
+               PROVIDE (__bss_start = .);
+               *(.bss)
+               *(COMMON)
+               . = ALIGN(4);
+               PROVIDE (__bss_end = .);
+
+               . = ALIGN(256);
+
+               PROVIDE (__stack_start = .);
+
+               PROVIDE (__stack_fiq_start = .);
+               . += FIQ_STACK_SIZE;
+               . = ALIGN(4);
+               PROVIDE (__stack_fiq_end = .);
+
+               PROVIDE (__stack_irq_start = .);
+               . += IRQ_STACK_SIZE;
+               . = ALIGN(4);
+               PROVIDE (__stack_irq_end = .);
+
+               PROVIDE (__stack_abt_start = .);
+               . += ABT_STACK_SIZE;
+               . = ALIGN(4);
+               PROVIDE (__stack_abt_end = .);
+
+               PROVIDE (__stack_und_start = .);
+               . += UND_STACK_SIZE;
+               . = ALIGN(4);
+               PROVIDE (__stack_und_end = .);
+
+               PROVIDE (__stack_svc_start = .);
+               . += SVC_STACK_SIZE;
+               . = ALIGN(4);
+               PROVIDE (__stack_svc_end = .);
+
+               PROVIDE (__stack_end = .);
+
+               PROVIDE (__heap_start = .);
        } > ram
 
 }