141 lines
4.3 KiB
Plaintext
141 lines
4.3 KiB
Plaintext
/****************************************************************************
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* boards/arm/stm32/nucleo-g474re/scripts/ld.script
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* The STM32G474RE has 512 KiB of FLASH beginning at address 0x0800:0000.
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*
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* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
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* where the code expects to begin execution by jumping to the entry point in
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* the 0x0800:0000 address range. The FLASH bootloader is located there and
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* allocated up to 24KiB (6 pages of 4k if single bank mode or 12 pages of 2k
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* if dual bank mode), so our executable will begin at 0x0800:6000, leaving
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* 488KiB.
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*
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* The STM32G474RE has a total of 128 KiB of SRAM in three separate areas:
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*
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* 1) 80 KiB SRAM1 mapped at 0x2000:0000 thru 0x2001:3fff.
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* 2) 16 KiB SRAM2 mapped at 0x2001:4000 thru 0x2001:7fff.
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*
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* CCM SRAM (Routine Booster):
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*
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* 3) 32 KiB CCM SRAM mapped at 0x1000:0000 thru 0x1000:7fff
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* but also aliased at at 0x2001:8000 thru 0x2001:ffff to be contiguous
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* with the SRAM1 and SRAM2.
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*
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* Because SRAM1 and SRAM2 are contiguous, they are treated as one region
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* by this logic.
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*
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* CCM SRAM is also contiguous to SRAM1 and SRAM2, however it is excluded
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* from this linker script, to keep it reserved for special uses in code.
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* REVISIT: Is this the correct way to handle CCM SRAM?
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*/
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MEMORY
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{
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flash (rx) : ORIGIN = 0x08006000, LENGTH = 488K
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sram (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
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}
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OUTPUT_ARCH(arm)
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EXTERN(_vectors)
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ENTRY(_stext)
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SECTIONS
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{
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.text : {
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_stext = ABSOLUTE(.);
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*(.vectors)
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*(.text .text.*)
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*(.fixup)
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*(.gnu.warning)
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*(.rodata .rodata.*)
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*(.gnu.linkonce.t.*)
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*(.glue_7)
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*(.glue_7t)
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*(.got)
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*(.gcc_except_table)
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*(.gnu.linkonce.r.*)
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_etext = ABSOLUTE(.);
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} > flash
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.init_section : ALIGN(4) {
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_sinit = ABSOLUTE(.);
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KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
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KEEP(*(.init_array EXCLUDE_FILE(*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o) .ctors))
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_einit = ABSOLUTE(.);
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} > flash
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.ARM.extab : ALIGN(4) {
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*(.ARM.extab*)
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} > flash
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.ARM.exidx : ALIGN(4) {
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__exidx_start = ABSOLUTE(.);
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*(.ARM.exidx*)
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__exidx_end = ABSOLUTE(.);
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} > flash
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.tdata : {
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_stdata = ABSOLUTE(.);
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*(.tdata .tdata.* .gnu.linkonce.td.*);
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_etdata = ABSOLUTE(.);
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} > flash
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.tbss : {
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_stbss = ABSOLUTE(.);
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*(.tbss .tbss.* .gnu.linkonce.tb.* .tcommon);
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_etbss = ABSOLUTE(.);
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} > flash
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_eronly = ABSOLUTE(.);
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.data : ALIGN(4) {
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_sdata = ABSOLUTE(.);
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*(.data .data.*)
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*(.gnu.linkonce.d.*)
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CONSTRUCTORS
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. = ALIGN(4);
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_edata = ABSOLUTE(.);
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} > sram AT > flash
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.bss : ALIGN(4) {
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_sbss = ABSOLUTE(.);
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*(.bss .bss.*)
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*(.gnu.linkonce.b.*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = ABSOLUTE(.);
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} > sram
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_info 0 : { *(.debug_info) }
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.debug_line 0 : { *(.debug_line) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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.debug_aranges 0 : { *(.debug_aranges) }
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}
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