libopencm3_stm32f4.ld 2.77 KB
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/*
 * This file is part of the libopencm3 project.
 *
 * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */

/* Generic linker script for STM32 targets using libopencm3. */

/* Memory regions must be defined in the ld script which includes this one. */

/* Enforce emmition of the vector table. */
EXTERN (vector_table)

/* Define the entry point of the output file. */
ENTRY(reset_handler)

MEMORY
{
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	vecs (rx) : ORIGIN = 0x08000000, LENGTH = 16K
	flash (rx): ORIGIN = 0x08004000, LENGTH = 16K
	rom (rx)  : ORIGIN = 0x08008000, LENGTH = 256K
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	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
}

/* Define sections. */
SECTIONS
{
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	.vecs : {
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		*(.vectors)	/* Vector table */
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	} >vecs

	.flash : {
		*(.flash*);
	} >flash

	.text : {
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		*(.text*)	/* Program code */
		. = ALIGN(4);
		*(.rodata*)	/* Read-only data */
		. = ALIGN(4);
	} >rom

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   .preinit_array : {
       . = ALIGN(4);
       __preinit_array_start = .;
       KEEP (*(.preinit_array))
       __preinit_array_end = .;
   } >rom
   .init_array : {
       . = ALIGN(4);
       __init_array_start = .;
       KEEP (*(SORT(.init_array.*)))
       KEEP (*(.init_array))
       __init_array_end = .;
   } >rom
   .fini_array : {
       . = ALIGN(4);
       __fini_array_start = .;
       KEEP (*(.fini_array))
       KEEP (*(SORT(.fini_array.*)))
       __fini_array_end = .;
   } >rom


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	/*
	 * Another section used by C++ stuff, appears when using newlib with
	 * 64bit (long long) printf support
	 */
	.ARM.extab : {
		*(.ARM.extab*)
	} >rom
	.ARM.exidx : {
		__exidx_start = .;
		*(.ARM.exidx*)
		__exidx_end = .;
	} >rom

	. = ALIGN(4);
	_etext = .;

	.data : {
		_data = .;
		*(.data*)	/* Read-write initialized data */
		. = ALIGN(4);
		_edata = .;
	} >ram AT >rom
	_data_loadaddr = LOADADDR(.data);

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	.bss : {
		__bss_start__ = .;
		*(.bss*)	/* Read-write zero initialized data */
		*(COMMON)
		. = ALIGN(4);
		__bss_end__ = .;
		_ebss = .;
	} >ram

	/*
	 * The .eh_frame section appears to be used for C++ exception handling.
	 * You may need to fix this if you're using C++.
	 */
/*	/DISCARD/ : { *(.eh_frame) }  */

	. = ALIGN(4);
	end = .;
}

PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));