source: rtems/c/src/lib/libbsp/m68k/mcf5235/startup/linkcmdsram @ a474e3c

4.104.114.84.9
Last change on this file since a474e3c was a474e3c, checked in by Joel Sherrill <joel.sherrill@…>, on Mar 12, 2007 at 11:18:19 AM

2007-03-12 Joel Sherrill <joel@…>

  • include/coverhd.h, start/start.S, startup/bspclean.c, startup/bspstart.c, startup/linkcmds, startup/linkcmdsflash, startup/linkcmdsram: Correct license URL and/or fix mistake in copyright notice. Both of these mistakes appear to be from code submitted after these changes were made previously.
  • Property mode set to 100644
File size: 4.8 KB
Line 
1/*
2 *  This file contains directives for the GNU linker which are specific
3 *  to the Freescale ColdFire mcf5235
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.rtems.com/license/LICENSE.
11 *
12 *  $Id$
13 */
14
15/*
16 * declare for the MCF5235_BSP_START_FROM_FLASH
17 * 0 - use debug monitor to load to ram
18 * 1 - load everything from flash from scratch
19 */
20MCF5235_BSP_START_FROM_FLASH = 0;
21
22/*
23 * Declare some sizes.
24 */
25_RamBase = DEFINED(_RamBase) ? _RamBase : 0x0 ;
26_RamSize = DEFINED(_RamSize) ? _RamSize : 16M ;
27_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0 ;
28
29
30/*
31 * System clock speed
32 */
33_CPUClockSpeed = DEFINED(_CPUClockSpeed) ? _CPUClockSpeed : 150000000 ;
34
35/*
36 * Location of on-chip devices
37 */
38__IPSBAR = DEFINED(__IPSBAR) ? __IPSBAR : 0x40000000 ;
39__SRAMBASE = DEFINED(__SRAMBASE) ? __SRAMBASE : 0x20000000 ;
40_VBR = 0x0;
41
42ENTRY(start)
43MEMORY
44{
45    ram : ORIGIN = 0, LENGTH = 16M
46    sram : ORIGIN = 0x20000000, LENGTH = 64K
47    flash : ORIGIN = 0xFFE00000, LENGTH = 2M
48}
49
50SECTIONS
51{
52   
53    _header_offset = 0;
54   
55    /*
56     * Text, data and bss segments
57     */
58    .text 0x40000 : {
59       
60       *(.text*)
61        *(.ram_code)
62
63        /*
64         * C++ constructors/destructors
65         */
66        *(.gnu.linkonce.t.*)
67
68        /*
69         * Initialization and finalization code.
70              *
71              * Various files can provide initialization and finalization
72         * functions.  crtbegin.o and crtend.o are two instances. The
73         * body of these functions are in .init and .fini sections. We
74         * accumulate the bodies here, and prepend function prologues
75         * from crti.o and function epilogues from crtn.o. crti.o must
76         * be linked first; crtn.o must be linked last.  Because these
77         * are wildcards, it doesn't matter if the user does not
78         * actually link against crti.o and crtn.o; the linker won't
79         * look for a file to match a wildcard.  The wildcard also
80         * means that it doesn't matter which directory crti.o and
81         * crtn.o are in.
82         */
83        PROVIDE (_init = .);
84        *crti.o(.init)
85        *(.init)
86        *crtn.o(.init)
87        PROVIDE (_fini = .);
88        *crti.o(.fini)
89        *(.fini)
90        *crtn.o(.fini)
91
92        /*
93         * Special FreeBSD sysctl sections.
94         */
95        . = ALIGN (16);
96        __start_set_sysctl_set = .;
97        *(set_sysctl_*);
98        __stop_set_sysctl_set = ABSOLUTE(.);
99        *(set_domain_*);
100        *(set_pseudo_*);
101
102
103        /*
104         * C++ constructors/destructors
105         *
106         * gcc uses crtbegin.o to find the start of the constructors
107         * and destructors so we make sure it is first.  Because this
108         * is a wildcard, it doesn't matter if the user does not
109         * actually link against crtbegin.o; the linker won't look for
110         * a file to match a wildcard.  The wildcard also means that
111         * it doesn't matter which directory crtbegin.o is in. The
112         * constructor and destructor list are terminated in
113         * crtend.o.  The same comments apply to it.
114         */
115        . = ALIGN (16);
116        *crtbegin.o(.ctors)
117        *(.ctors)
118        *crtend.o(.ctors)
119        *crtbegin.o(.dtors)
120        *(.dtors)
121        *crtend.o(.dtors)
122
123        /*
124         * Exception frame info
125         */
126        . = ALIGN (16);
127        *(.eh_frame)
128
129        /*
130         * Read-only data
131         */
132        . = ALIGN (16);
133        _rodata_start = . ;
134        *(.rodata*)
135        *(.gnu.linkonce.r*)
136       
137        . = ALIGN (16);
138
139        *(.console_gdb_xfer)
140        *(.bootstrap_data)
141        . = ALIGN(16);
142        _estuff = .;
143    PROVIDE (_etext = .);
144    } >ram
145       
146        .data : {
147            PROVIDE( _data_dest_start = . );
148            PROVIDE( _copy_start = .);
149            *(.data)
150            *(.gnu.linkonce.d*)
151            *(.gcc_except_table)
152            *(.jcr)
153            . = ALIGN (16);
154            PROVIDE (_edata = .);
155        PROVIDE (_copy_end = .);
156        PROVIDE (_data_dest_end = . );
157        } >ram
158
159        _data_src_start = _estuff;
160        _data_src_end = _data_dest_start + SIZEOF(.data);       
161       
162        .bss : {
163                _clear_start = .;
164                *(.bss*)
165                *(COMMON)
166                . = ALIGN (16);
167                PROVIDE (end = .);
168                _clear_end = .;
169
170                _WorkspaceBase = .;
171        } >ram
172  /* Stabs debugging sections.  */
173  .stab 0 : { *(.stab) }
174  .stabstr 0 : { *(.stabstr) }
175  .stab.excl 0 : { *(.stab.excl) }
176  .stab.exclstr 0 : { *(.stab.exclstr) }
177  .stab.index 0 : { *(.stab.index) }
178  .stab.indexstr 0 : { *(.stab.indexstr) }
179  .comment 0 : { *(.comment) }
180
181PROVIDE (end_of_all = .); 
182}
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