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/*
* This file contains directives for the GNU linker which are specific
* to the Freescale ColdFire mcf5235
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
/*
* declare for the MCF5235_BSP_START_FROM_FLASH
* 0 - use debug monitor to load to ram
* 1 - load everything from flash from scratch
*/
MCF5235_BSP_START_FROM_FLASH = 0;
/*
* Declare some sizes.
*/
_RamBase = DEFINED(_RamBase) ? _RamBase : 0x0 ;
_RamSize = DEFINED(_RamSize) ? _RamSize : 16M ;
_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0 ;
/*
* System clock speed
*/
_CPUClockSpeed = DEFINED(_CPUClockSpeed) ? _CPUClockSpeed : 150000000 ;
/*
* Location of on-chip devices
*/
__IPSBAR = DEFINED(__IPSBAR) ? __IPSBAR : 0x40000000 ;
__SRAMBASE = DEFINED(__SRAMBASE) ? __SRAMBASE : 0x20000000 ;
_VBR = 0x0;
ENTRY(start)
MEMORY
{
ram : ORIGIN = 0, LENGTH = 16M
sram : ORIGIN = 0x20000000, LENGTH = 64K
flash : ORIGIN = 0xFFE00000, LENGTH = 2M
}
SECTIONS
{
_header_offset = 0;
/*
* Text, data and bss segments
*/
.text 0x40000 : {
*(.text*)
*(.ram_code)
/*
* C++ constructors/destructors
*/
*(.gnu.linkonce.t.*)
/*
* Initialization and finalization code.
*
* Various files can provide initialization and finalization
* functions. crtbegin.o and crtend.o are two instances. The
* body of these functions are in .init and .fini sections. We
* accumulate the bodies here, and prepend function prologues
* from crti.o and function epilogues from crtn.o. crti.o must
* be linked first; crtn.o must be linked last. Because these
* are wildcards, it doesn't matter if the user does not
* actually link against crti.o and crtn.o; the linker won't
* look for a file to match a wildcard. The wildcard also
* means that it doesn't matter which directory crti.o and
* crtn.o are in.
*/
PROVIDE (_init = .);
*crti.o(.init)
*(.init)
*crtn.o(.init)
PROVIDE (_fini = .);
*crti.o(.fini)
*(.fini)
*crtn.o(.fini)
/*
* Special FreeBSD sysctl sections.
*/
. = ALIGN (16);
__start_set_sysctl_set = .;
*(set_sysctl_*);
__stop_set_sysctl_set = ABSOLUTE(.);
*(set_domain_*);
*(set_pseudo_*);
/*
* C++ constructors/destructors
*
* gcc uses crtbegin.o to find the start of the constructors
* and destructors so we make sure it is first. Because this
* is a wildcard, it doesn't matter if the user does not
* actually link against crtbegin.o; the linker won't look for
* a file to match a wildcard. The wildcard also means that
* it doesn't matter which directory crtbegin.o is in. The
* constructor and destructor list are terminated in
* crtend.o. The same comments apply to it.
*/
. = ALIGN (16);
*crtbegin.o(.ctors)
*(.ctors)
*crtend.o(.ctors)
*crtbegin.o(.dtors)
*(.dtors)
*crtend.o(.dtors)
/*
* Exception frame info
*/
. = ALIGN (16);
*(.eh_frame)
/*
* Read-only data
*/
. = ALIGN (16);
_rodata_start = . ;
*(.rodata*)
*(.gnu.linkonce.r*)
. = ALIGN (16);
*(.console_gdb_xfer)
*(.bootstrap_data)
. = ALIGN(16);
_estuff = .;
PROVIDE (_etext = .);
} >ram
.data : {
PROVIDE( _data_dest_start = . );
PROVIDE( _copy_start = .);
*(.data)
*(.gnu.linkonce.d*)
*(.gcc_except_table)
*(.jcr)
. = ALIGN (16);
PROVIDE (_edata = .);
PROVIDE (_copy_end = .);
PROVIDE (_data_dest_end = . );
} >ram
_data_src_start = _estuff;
_data_src_end = _data_dest_start + SIZEOF(.data);
.bss : {
_clear_start = .;
*(.bss*)
*(COMMON)
. = ALIGN (16);
PROVIDE (end = .);
_clear_end = .;
_WorkspaceBase = .;
} >ram
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
PROVIDE (end_of_all = .);
}
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