5c65f0f653
* added: Linker script adds support for RAM4 and RAM5 memory regions, so that those are usable by code. This also fixes the fact that RAM4 was declared, but inaccessible previously * changed: RAM1 is renamed to RAM2, shifting numbering of all regions. This is done in order to be in line with other STM32 definitions, similarly ROM1 became ROM2.
224 lines
4.4 KiB
ArmAsm
224 lines
4.4 KiB
ArmAsm
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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* Copyright (C) 2013 Frantisek Burian <BuFran@seznam.cz>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* Generic linker script for all targets using libopencm3. */
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/* Enforce emmition of the vector table. */
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EXTERN(vector_table)
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/* Define the entry point of the output file. */
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ENTRY(reset_handler)
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/* Define memory regions. */
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MEMORY
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{
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/* RAM is always used */
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ram (rwx) : ORIGIN = _RAM_OFF, LENGTH = _RAM
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#if defined(_ROM)
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rom (rx) : ORIGIN = _ROM_OFF, LENGTH = _ROM
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#endif
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#if defined(_ROM1)
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rom1 (rx) : ORIGIN = _ROM1_OFF, LENGTH = _ROM1
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#endif
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#if defined(_ROM2)
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rom2 (rx) : ORIGIN = _ROM2_OFF, LENGTH = _ROM2
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#endif
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#if defined(_RAM1)
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ram1 (rwx) : ORIGIN = _RAM1_OFF, LENGTH = _RAM1
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#endif
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#if defined(_RAM2)
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ram2 (rwx) : ORIGIN = _RAM2_OFF, LENGTH = _RAM2
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#endif
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#if defined(_RAM3)
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ram3 (rwx) : ORIGIN = _RAM3_OFF, LENGTH = _RAM3
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#endif
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#if defined(_RAM4)
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ram4 (rwx) : ORIGIN = _RAM4_OFF, LENGTH = _RAM4
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#endif
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#if defined(_RAM5)
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ram5 (rwx) : ORIGIN = _RAM5_OFF, LENGTH = _RAM5
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#endif
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#if defined(_CCM)
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ccm (rwx) : ORIGIN = _CCM_OFF, LENGTH = _CCM
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#endif
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#if defined(_EEP)
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eep (r) : ORIGIN = _EEP_OFF, LENGTH = _EEP
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#endif
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#if defined(_XSRAM)
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xsram (rw) : ORIGIN = _XSRAM_OFF, LENGTH = _XSRAM
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#endif
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#if defined(_XDRAM)
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xdram (rw) : ORIGIN = _XDRAM_OFF, LENGTH = _XDRAM
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#endif
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#if defined(_NFCRAM)
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nfcram (rw) : ORIGIN _NFCRAM_OFF, LENGTH = _NFCRAM
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#endif
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}
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/* Define sections. */
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SECTIONS
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{
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.text : {
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*(.vectors) /* Vector table */
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*(.text*) /* Program code */
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. = ALIGN(4);
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*(.rodata*) /* Read-only data */
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. = ALIGN(4);
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} >rom
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/* C++ Static constructors/destructors, also used for
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* __attribute__((constructor)) and the likes.
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*/
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.preinit_array : {
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. = ALIGN(4);
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__preinit_array_start = .;
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KEEP (*(.preinit_array))
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__preinit_array_end = .;
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} >rom
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.init_array : {
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. = ALIGN(4);
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__init_array_start = .;
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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__init_array_end = .;
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} >rom
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.fini_array : {
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. = ALIGN(4);
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__fini_array_start = .;
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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__fini_array_end = .;
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} >rom
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/*
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* Another section used by C++ stuff, appears when using newlib with
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* 64bit (long long) printf support
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*/
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.ARM.extab : {
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*(.ARM.extab*)
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} >rom
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.ARM.exidx : {
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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} >rom
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. = ALIGN(4);
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_etext = .;
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/* ram, but not cleared on reset, eg boot/app comms */
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.noinit (NOLOAD) : {
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*(.noinit*)
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} >ram
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. = ALIGN(4);
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.data : {
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_data = .;
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*(.data*) /* Read-write initialized data */
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*(.ramtext*) /* "text" functions to run in ram */
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. = ALIGN(4);
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_edata = .;
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} >ram AT >rom
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_data_loadaddr = LOADADDR(.data);
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.bss : {
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*(.bss*) /* Read-write zero initialized data */
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*(COMMON)
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. = ALIGN(4);
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_ebss = .;
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} >ram
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#if defined(_CCM)
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.ccm : {
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*(.ccmram*)
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. = ALIGN(4);
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} >ccm
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#endif
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#if defined(_RAM1)
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.ram1 : {
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*(.ram1*)
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. = ALIGN(4);
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} >ram1
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#endif
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#if defined(_RAM2)
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.ram2 : {
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*(.ram2*)
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. = ALIGN(4);
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} >ram2
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#endif
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#if defined(_RAM3)
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.ram3 : {
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*(.ram3*)
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. = ALIGN(4);
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} >ram3
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#endif
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#if defined(_RAM4)
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.ram4 : {
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*(.ram4*)
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. = ALIGN(4);
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} >ram4
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#endif
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#if defined(_RAM5)
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.ram5 : {
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*(.ram5*)
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. = ALIGN(4);
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} >ram4
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#endif
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#if defined(_XSRAM)
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.xsram : {
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*(.xsram*)
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. = ALIGN(4);
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} >xsram
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#endif
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#if defined(_XDRAM)
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.xdram : {
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*(.xdram*)
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. = ALIGN(4);
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} >xdram
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#endif
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#if defined(_NFCRAM)
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.nfcram : {
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*(.nfcram*)
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. = ALIGN(4);
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} >nfcram
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#endif
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/*
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* The .eh_frame section appears to be used for C++ exception handling.
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* You may need to fix this if you're using C++.
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*/
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/DISCARD/ : { *(.eh_frame) }
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. = ALIGN(4);
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end = .;
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}
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PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
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