mirror of
https://github.com/apache/nuttx.git
synced 2026-03-23 22:43:57 +08:00
b-g474e-dpow1: Add support for FLASH bootloader
boards/arm/stm32/b-g474e-dpow1/scripts/ld.script.dfu:
* New file. Reserve up to 24KiB at the start of FLASH for a
bootloader.
boards/arm/stm32/b-g474e-dpow1/scripts/Make.defs:
* When building with CONFIG_STM32_DFU, use the new ld.script.dfu
to leave room in FLASH for a bootloader.
boards/arm/stm32/b-g474e-dpow1/README.txt:
* "FLASH Bootloader Support": New section.
This commit is contained in:
Nathan Hartman
committed by
Xiang Xiao
Xiang Xiao
parent
d788b2e16c
commit
dc4c4102c3
@@ -22,6 +22,7 @@ Contents
|
||||
- LEDs
|
||||
- RGB Power LED
|
||||
- Serial Consoles
|
||||
- FLASH Bootloader Support
|
||||
- Configurations
|
||||
|
||||
|
||||
@@ -114,6 +115,28 @@ Serial Consoles
|
||||
differ.
|
||||
|
||||
|
||||
FLASH Bootloader Support
|
||||
========================
|
||||
|
||||
If implementing a FLASH bootloader, turn on Kconfig option CONFIG_STM32_DFU.
|
||||
This option activates an alternate linker script, scripts/ld.script.dfu,
|
||||
which causes NuttX to leave a gap at the start of FLASH, leaving that space
|
||||
for the FLASH bootloader. See scripts/ld.script.dfu for details. It also
|
||||
causes NuttX to relocate its vector table and possibly make other
|
||||
adjustments.
|
||||
|
||||
One possible bootloader is STmicro's OpenBootloader "middleware" supplied
|
||||
with STM32CubeG4 version 1.3.0. On the host (PC), it should be possible to
|
||||
use STmicro's STM32CubeProgrammer or the stm32loader.py script from
|
||||
https://github.com/jsnyder/stm32loader. That script can be invoked with
|
||||
parameters such as:
|
||||
|
||||
stm32loader.py -p /dev/ttyACM0 -a 0x08006000 -e -w -v -g 0x08006000 nuttx.bin
|
||||
|
||||
where the given address (0x08006000 in this case) must match the starting
|
||||
address in scripts/ld.script.dfu.
|
||||
|
||||
|
||||
Configurations
|
||||
==============
|
||||
|
||||
|
||||
@@ -22,12 +22,18 @@ include $(TOPDIR)/.config
|
||||
include $(TOPDIR)/tools/Config.mk
|
||||
include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
|
||||
|
||||
ifeq ($(CONFIG_STM32_DFU),y)
|
||||
LDSCRIPT = ld.script.dfu
|
||||
else
|
||||
LDSCRIPT = ld.script
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
|
||||
# Windows-native toolchains
|
||||
ARCHSCRIPT = -T "${shell cygpath -w $(BOARD_DIR)$(DELIM)scripts$(DELIM)ld.script}"
|
||||
ARCHSCRIPT = -T "${shell cygpath -w $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)}"
|
||||
else
|
||||
# Linux/Cygwin-native toolchain
|
||||
ARCHSCRIPT = -T$(BOARD_DIR)$(DELIM)scripts$(DELIM)ld.script
|
||||
ARCHSCRIPT = -T$(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
|
||||
|
||||
127
boards/arm/stm32/b-g474e-dpow1/scripts/ld.script.dfu
Normal file
127
boards/arm/stm32/b-g474e-dpow1/scripts/ld.script.dfu
Normal file
@@ -0,0 +1,127 @@
|
||||
/****************************************************************************
|
||||
* boards/arm/stm32/b-g474e-dpow1/scripts/ld.script
|
||||
*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership. The
|
||||
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/* The STM32G474RE has 512 KiB of FLASH beginning at address 0x0800:0000.
|
||||
*
|
||||
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
|
||||
* where the code expects to begin execution by jumping to the entry point in
|
||||
* the 0x0800:0000 address range. The FLASH bootloader is located there and
|
||||
* allocated up to 24KiB (6 pages of 4k if single bank mode or 12 pages of 2k
|
||||
* if dual bank mode), so our executable will begin at 0x0800:6000, leaving
|
||||
* 488KiB.
|
||||
*
|
||||
* The STM32G474RE has a total of 128 KiB of SRAM in three separate areas:
|
||||
*
|
||||
* 1) 80 KiB SRAM1 mapped at 0x2000:0000 thru 0x2001:3fff.
|
||||
* 2) 16 KiB SRAM2 mapped at 0x2001:4000 thru 0x2001:7fff.
|
||||
*
|
||||
* CCM SRAM (Routine Booster):
|
||||
*
|
||||
* 3) 32 KiB CCM SRAM mapped at 0x1000:0000 thru 0x1000:7fff
|
||||
* but also aliased at at 0x2001:8000 thru 0x2001:ffff to be contiguous
|
||||
* with the SRAM1 and SRAM2.
|
||||
*
|
||||
* Because SRAM1 and SRAM2 are contiguous, they are treated as one region
|
||||
* by this logic.
|
||||
*
|
||||
* CCM SRAM is also contiguous to SRAM1 and SRAM2, however it is excluded
|
||||
* from this linker script, to keep it reserved for special uses in code.
|
||||
* REVISIT: Is this the correct way to handle CCM SRAM?
|
||||
*/
|
||||
|
||||
MEMORY
|
||||
{
|
||||
flash (rx) : ORIGIN = 0x08006000, LENGTH = 488K
|
||||
sram (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
|
||||
}
|
||||
|
||||
OUTPUT_ARCH(arm)
|
||||
EXTERN(_vectors)
|
||||
ENTRY(_stext)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.text : {
|
||||
_stext = ABSOLUTE(.);
|
||||
*(.vectors)
|
||||
*(.text .text.*)
|
||||
*(.fixup)
|
||||
*(.gnu.warning)
|
||||
*(.rodata .rodata.*)
|
||||
*(.gnu.linkonce.t.*)
|
||||
*(.glue_7)
|
||||
*(.glue_7t)
|
||||
*(.got)
|
||||
*(.gcc_except_table)
|
||||
*(.gnu.linkonce.r.*)
|
||||
_etext = ABSOLUTE(.);
|
||||
} > flash
|
||||
|
||||
.init_section : ALIGN(4) {
|
||||
_sinit = ABSOLUTE(.);
|
||||
*(.init_array .init_array.*)
|
||||
_einit = ABSOLUTE(.);
|
||||
} > flash
|
||||
|
||||
.ARM.extab : ALIGN(4) {
|
||||
*(.ARM.extab*)
|
||||
} > flash
|
||||
|
||||
.ARM.exidx : ALIGN(4) {
|
||||
__exidx_start = ABSOLUTE(.);
|
||||
*(.ARM.exidx*)
|
||||
__exidx_end = ABSOLUTE(.);
|
||||
} > flash
|
||||
|
||||
_eronly = ABSOLUTE(.);
|
||||
|
||||
.data : ALIGN(4) {
|
||||
_sdata = ABSOLUTE(.);
|
||||
*(.data .data.*)
|
||||
*(.gnu.linkonce.d.*)
|
||||
CONSTRUCTORS
|
||||
. = ALIGN(4);
|
||||
_edata = ABSOLUTE(.);
|
||||
} > sram AT > flash
|
||||
|
||||
.bss : ALIGN(4) {
|
||||
_sbss = ABSOLUTE(.);
|
||||
*(.bss .bss.*)
|
||||
*(.gnu.linkonce.b.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
_ebss = ABSOLUTE(.);
|
||||
} > sram
|
||||
|
||||
/* Stabs debugging sections. */
|
||||
|
||||
.stab 0 : { *(.stab) }
|
||||
.stabstr 0 : { *(.stabstr) }
|
||||
.stab.excl 0 : { *(.stab.excl) }
|
||||
.stab.exclstr 0 : { *(.stab.exclstr) }
|
||||
.stab.index 0 : { *(.stab.index) }
|
||||
.stab.indexstr 0 : { *(.stab.indexstr) }
|
||||
.comment 0 : { *(.comment) }
|
||||
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||
.debug_info 0 : { *(.debug_info) }
|
||||
.debug_line 0 : { *(.debug_line) }
|
||||
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||||
.debug_aranges 0 : { *(.debug_aranges) }
|
||||
}
|
||||
Reference in New Issue
Block a user