Commit f84f52a5 authored by Greg Ungerer's avatar Greg Ungerer
Browse files

m68knommu: clean up linker script 



There is a lot of years of collected cruft in the m68knommu linker script.
Clean it all up and use the well defined linker script support macros.

Support is maintained for building both ROM/FLASH based and RAM based setups.
No major changes to section layouts, though the rodata section is now lumped
in with the read/write data section.

Signed-off-by: default avatarGreg Ungerer <gerg@uclinux.org>
parent 10cb54de

arch/m68k/kernel/vmlinux-nommu.lds

+49 −151
Original line number Diff line number Diff line 
/*

 *	vmlinux.lds.S -- master linker script for m68knommu arch

 *

 *	(C) Copyright 2002-2006, Greg Ungerer <gerg@snapgear.com>

 *	(C) Copyright 2002-2012, Greg Ungerer <gerg@snapgear.com>

 *

 *	This linker script is equipped to build either ROM loaded or RAM

 *	run kernels.

 */



#include <asm-generic/vmlinux.lds.h>

#include <asm/page.h>

#include <asm/thread_info.h>



#if defined(CONFIG_RAMKERNEL)

#define	RAM_START	CONFIG_KERNELBASE

#define	RAM_LENGTH	(CONFIG_RAMBASE + CONFIG_RAMSIZE - CONFIG_KERNELBASE)

#define	TEXT		ram

#define	DATA		ram

#define	INIT		ram

#define	BSSS		ram

#define	KTEXT_ADDR	CONFIG_KERNELBASE

#endif

#if defined(CONFIG_ROMKERNEL) || defined(CONFIG_HIMEMKERNEL)

#define	RAM_START	CONFIG_RAMBASE

#define	RAM_LENGTH	CONFIG_RAMSIZE

#define	ROMVEC_START	CONFIG_ROMVEC

#define	ROMVEC_LENGTH	CONFIG_ROMVECSIZE

#define	ROM_START	CONFIG_ROMSTART

#define	ROM_LENGTH	CONFIG_ROMSIZE

#define	TEXT		rom

#define	DATA		ram

#define	INIT		ram

#define	BSSS		ram

#endif



#ifndef DATA_ADDR

#define	DATA_ADDR

#if defined(CONFIG_ROMKERNEL)

#define	KTEXT_ADDR	CONFIG_ROMSTART

#define	KDATA_ADDR	CONFIG_KERNELBASE

#define	LOAD_OFFSET	KDATA_ADDR + (ADDR(.text) + SIZEOF(.text))

#endif



#include <asm/page.h>

#include <asm/thread_info.h>

#include <asm-generic/vmlinux.lds.h>



OUTPUT_ARCH(m68k)

ENTRY(_start)



MEMORY {

	ram	: ORIGIN = RAM_START, LENGTH = RAM_LENGTH

#ifdef ROM_START

	romvec	: ORIGIN = ROMVEC_START, LENGTH = ROMVEC_LENGTH

	rom	: ORIGIN = ROM_START, LENGTH = ROM_LENGTH

#endif

}



jiffies = jiffies_64 + 4;



SECTIONS {



#ifdef ROMVEC_START

	. = ROMVEC_START ;

#ifdef CONFIG_ROMVEC

	. = CONFIG_ROMVEC;

	.romvec : {

		__rom_start = .;

		_romvec = .;

		*(.romvec)

		*(.data..initvect)

	} > romvec

	}

#endif



	.text : {

	. = KTEXT_ADDR;



	_text = .;

	_stext = .;

	.text : {

		HEAD_TEXT

		TEXT_TEXT

		SCHED_TEXT

		LOCK_TEXT

		*(.text..lock)

		*(.fixup)



		. = ALIGN(16);          /* Exception table              */

		__start___ex_table = .;

		*(__ex_table)

		__stop___ex_table = .;



		*(.rodata) *(.rodata.*)

		*(__vermagic)		/* Kernel version magic */

		*(.rodata1)

		*(.rodata.str1.1)



		/* Kernel symbol table: Normal symbols */

		. = ALIGN(4);

		__start___ksymtab = .;

		*(SORT(___ksymtab+*))

		__stop___ksymtab = .;



		/* Kernel symbol table: GPL-only symbols */

		__start___ksymtab_gpl = .;

		*(SORT(___ksymtab_gpl+*))

		__stop___ksymtab_gpl = .;



		/* Kernel symbol table: Normal unused symbols */

		__start___ksymtab_unused = .;

		*(SORT(___ksymtab_unused+*))

		__stop___ksymtab_unused = .;



		/* Kernel symbol table: GPL-only unused symbols */

		__start___ksymtab_unused_gpl = .;

		*(SORT(___ksymtab_unused_gpl+*))

		__stop___ksymtab_unused_gpl = .;



		/* Kernel symbol table: GPL-future symbols */

		__start___ksymtab_gpl_future = .;

		*(SORT(___ksymtab_gpl_future+*))

		__stop___ksymtab_gpl_future = .;



		/* Kernel symbol table: Normal symbols */

		__start___kcrctab = .;

		*(SORT(___kcrctab+*))

		__stop___kcrctab = .;



		/* Kernel symbol table: GPL-only symbols */

		__start___kcrctab_gpl = .;

		*(SORT(___kcrctab_gpl+*))

		__stop___kcrctab_gpl = .;



		/* Kernel symbol table: Normal unused symbols */

		__start___kcrctab_unused = .;

		*(SORT(___kcrctab_unused+*))

		__stop___kcrctab_unused = .;



		/* Kernel symbol table: GPL-only unused symbols */

		__start___kcrctab_unused_gpl = .;

		*(SORT(___kcrctab_unused_gpl+*))

		__stop___kcrctab_unused_gpl = .;



		/* Kernel symbol table: GPL-future symbols */

		__start___kcrctab_gpl_future = .;

		*(SORT(___kcrctab_gpl_future+*))

		__stop___kcrctab_gpl_future = .;



		/* Kernel symbol table: strings */

		*(__ksymtab_strings)



		/* Built-in module parameters */

		. = ALIGN(4) ;

		__start___param = .;

		*(__param)

		__stop___param = .;



		/* Built-in module versions */

		. = ALIGN(4) ;

		__start___modver = .;

		*(__modver)

		__stop___modver = .;



		. = ALIGN(4) ;

		. = ALIGN(16);

	}

	_etext = .;

	} > TEXT



	.data DATA_ADDR : {

		. = ALIGN(4);

#ifdef KDATA_ADDR

	. = KDATA_ADDR;

#endif



	_sdata = .;

		DATA_DATA

		CACHELINE_ALIGNED_DATA(32)

		PAGE_ALIGNED_DATA(PAGE_SIZE)

		*(.data..shared_aligned)

		INIT_TASK_DATA(THREAD_SIZE)

	RO_DATA_SECTION(PAGE_SIZE)

	RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)

	_edata = .;

	} > DATA



	EXCEPTION_TABLE(16)

	NOTES



	. = ALIGN(PAGE_SIZE);

	__init_begin = .;

	INIT_TEXT_SECTION(PAGE_SIZE)

	INIT_DATA_SECTION(16)

	PERCPU_SECTION(16)

	.m68k_fixup : {

		__start_fixup = .;

		*(.m68k_fixup)

		__stop_fixup = .;

	} > DATA

	NOTES > DATA



	.init.text : {

		. = ALIGN(PAGE_SIZE);

		__init_begin = .;

	} > INIT

	INIT_TEXT_SECTION(PAGE_SIZE) > INIT

	INIT_DATA_SECTION(16) > INIT

	}

	.init.data : {

		. = ALIGN(PAGE_SIZE);

		__init_end = .;

	} > INIT

	}



	.bss : {

		. = ALIGN(4);

	_sbss = .;

		*(.bss)

		*(COMMON)

		. = ALIGN(4) ;

	BSS_SECTION(0, 0, 0)

	_ebss = .;



	_end = .;

	} > BSSS



	STABS_DEBUG

	.comment 0 : { *(.comment) }



	/* Sections to be discarded */

	DISCARDS

}

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