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/*
* This file contains directives for the GNU linker which are specific
* to the Arcturus uC DIMM ColdFire 5282
*
* Author: W. Eric Norum <norume@aps.anl.gov>
*
* COPYRIGHT (c) 2005-2007.
* 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.rtems.org/license/LICENSE.
*/
/*
* Declare some locations and sizes.
*/
RamBase = DEFINED(RamBase) ? RamBase : 0x0;
RamSize = DEFINED(RamSize) ? RamSize : 16M;
RamEnd = RamBase + RamSize;
HeapSize = DEFINED(HeapSize) ? HeapSize : 0;
_FlashBase = DEFINED(_FlashBase) ? _FlashBase : 0x10000000;
_FlashSize = DEFINED(_FlashSize) ? _FlashSize : 4M ;
/*
* Location of downloaded (from TFTP or flash) file
*/
_DownloadLocation = 0x40000;
/*
* System clock speed
*
* If autodetection of the system clock pased on the PLL ref. clock
* (AFAIK 8MHz for both 64MHz and 80MHz boards) doesn't work then
* you can:
* - define (nonzero) system clock speed from app- linkflags (or here)
* - use a uCbootloader env. var: SYS_CLOCK_SPEED to define it.
* You can also redefine the PLL reference clock speed from linkflags
* or here...
*/
_CPUClockSpeed = DEFINED(_CPUClockSpeed) ? _CPUClockSpeed : 0 ;
_PLLRefClockSpeed = DEFINED(_PLLRefClockSpeed) ? _PLLRefClockSpeed : 8000000;
/*
* Location of on-chip devices
*/
__IPSBAR = DEFINED(__IPSBAR) ? __IPSBAR : 0x40000000 ;
__SRAMBASE = DEFINED(__SRAMBASE) ? __SRAMBASE : 0x20000000 ;
_VBR = 0x0;
ENTRY(start)
STARTUP(start.o)
MEMORY
{
ram : ORIGIN = 0, LENGTH = 16M
sram : ORIGIN = 0x20000000, LENGTH = 64k
}
SECTIONS
{
_header_offset = 0;
/*
* Text, data and bss segments
*/
.text _DownloadLocation : {
*(.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 = .);
KEEP (*crti.o(.init))
KEEP (*(.init))
KEEP (*crtn.o(.init))
PROVIDE (_fini = .);
KEEP (*crti.o(.fini))
KEEP (*(.fini))
KEEP (*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);
KEEP (*crtbegin.o(.ctors))
KEEP (*crtbegin?.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
KEEP (*crtbegin.o(.dtors))
KEEP (*crtbegin?.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
/*
* Exception frame info
*/
. = ALIGN (16);
KEEP (*(.eh_frame))
/*
* Read-only data
*/
. = ALIGN (16);
_rodata_start = . ;
*(.rodata*)
KEEP (*(SORT(.rtemsroset.*)))
*(.gnu.linkonce.r*)
. = ALIGN (16);
*(.console_gdb_xfer)
*(.bootstrap_data)
. = ALIGN(16);
_estuff = .;
PROVIDE (_etext = .);
} >ram
.tdata : {
_TLS_Data_begin = .;
*(.tdata .tdata.* .gnu.linkonce.td.*)
_TLS_Data_end = .;
} > ram
.tbss : {
_TLS_BSS_begin = .;
*(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon)
_TLS_BSS_end = .;
} > ram
_TLS_Data_size = _TLS_Data_end - _TLS_Data_begin;
_TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin;
_TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin;
_TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin;
_TLS_Size = _TLS_BSS_end - _TLS_Data_begin;
_TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss));
.data : {
PROVIDE( _data_dest_start = . );
PROVIDE( _copy_start = .);
*(.data*)
KEEP (*(SORT(.rtemsrwset.*)))
*(.gnu.linkonce.d*)
*(.gcc_except_table*)
KEEP (*(.jcr))
. = ALIGN (16);
PROVIDE (_edata = .);
PROVIDE (_copy_end = .);
PROVIDE (_data_dest_end = . );
} >ram
_data_src_start = LOADADDR(.data);
_data_src_end = _data_src_start + SIZEOF(.data);
.bss : {
_clear_start = .;
*(.bss*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN (16);
PROVIDE (end = .);
_clear_end = .;
} >ram
.noinit (NOLOAD) : {
*(.noinit*)
} >ram
.rtemsstack (NOLOAD) : {
*(SORT(.rtemsstack.*))
WorkAreaBase = .;
} >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) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* These must appear regardless of . */
PROVIDE (end_of_all = .);
}
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