25eb09c3bb
replace *(.init_array .init_array.*) with KEEP(*(.init_array .init_array.*)). The KEEP statement within a linker script will instruct the linker to keep the specified section, even if no symbols inside it are referenced. This statement is used within the SECTIONS section of the linker script. This becomes relevant when garbage collection is performed at link time, enabled by passing the --gc-sections switch to the linker. The KEEP statement instructs the linker to use the specified section as a root node when creating a dependency graph, looking for unused sections. Essentially forcing the section to be marked as used. Signed-off-by: cuiziwei <cuiziwei@xiaomi.com>
133 lines
4.3 KiB
Plaintext
133 lines
4.3 KiB
Plaintext
/****************************************************************************
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* boards/arm/stm32f7/stm32f746-ws/scripts/flash.ld
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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 STM32F746NGH6 has 1024Kb of main FLASH memory. This FLASH memory can
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* be accessed from either the AXIM interface at address 0x0800:0000 or from
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* the ITCM interface at address 0x0020:0000.
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*
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* Additional information, including the option bytes, is available at at
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* FLASH at address 0x1ff0:0000 (AXIM) or 0x0010:0000 (ITCM).
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*
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* In the STM32F746NGH6, two different boot spaces can be selected through
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* the BOOT pin and the boot base address programmed in the BOOT_ADD0 and
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* BOOT_ADD1 option bytes:
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*
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* 1) BOOT=0: Boot address defined by user option byte BOOT_ADD0[15:0].
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* ST programmed value: Flash on ITCM at 0x0020:0000
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* 2) BOOT=1: Boot address defined by user option byte BOOT_ADD1[15:0].
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* ST programmed value: System bootloader at 0x0010:0000
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*
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* NuttX does not modify these option bytes. On the unmodified STM32F746G
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* DISCO board, the BOOT0 pin is at ground so by default, the STM32 will boot
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* to address 0x0020:0000 in ITCM FLASH.
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*
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* The STM32F746NGH6 also has 320Kb of data SRAM (in addition to ITCM SRAM).
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* SRAM is split up into three blocks:
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*
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* 1) 64Kb of DTCM SRM beginning at address 0x2000:0000
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* 2) 240Kb of SRAM1 beginning at address 0x2001:0000
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* 3) 16Kb of SRAM2 beginning at address 0x2004:c000
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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.
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*/
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MEMORY
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{
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itcm (rwx) : ORIGIN = 0x00200000, LENGTH = 1024K
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flash (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
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dtcm (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
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sram1 (rwx) : ORIGIN = 0x20010000, LENGTH = 240K
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sram2 (rwx) : ORIGIN = 0x2004c000, LENGTH = 16K
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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 : {
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_sinit = ABSOLUTE(.);
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KEEP(*(.init_array .init_array.*))
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_einit = ABSOLUTE(.);
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} > flash
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.ARM.extab : {
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*(.ARM.extab*)
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} > flash
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__exidx_start = ABSOLUTE(.);
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.ARM.exidx : {
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*(.ARM.exidx*)
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} > flash
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__exidx_end = ABSOLUTE(.);
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_eronly = ABSOLUTE(.);
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.data : {
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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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} > sram1 AT > flash
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.bss : {
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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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} > sram1
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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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