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boards/arm/stm32n6: add initial STM32N6570-DK support

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add initial STM32N6570-DK support

Assisted-by: Codex:GPT-6
Signed-off-by: raiden00pl <raiden00@railab.me>
This commit is contained in:
raiden00pl 2026-09-19 11:04:20 +02:00 • committed by Alan C. Assis
parent 97a8da4fd9
commit 38d6c3b8bb
19 changed files with 1225 additions and 4 deletions
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108
Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst Normal file
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================
ST STM32N6570-DK
================
.. tags:: chip:stm32, chip:stm32n6, chip:stm32n657
.. figure:: stm32n6570-dk-front.jpg
:align: center
:alt: STM32N6570-DK Front
STM32N6570-DK Front
.. figure:: stm32n6570-dk-back.jpg
:align: center
:alt: STM32N6570-DK Back
STM32N6570-DK Back
The STM32N6570-DK Discovery kit is based on the STM32N657X0H3Q
Arm Cortex-M55 microcontroller.
Loading and running
===================
Use SRAM loading for routine debugging and external flash for persistent
boot, reset testing and standalone operation. The console is the ST-LINK
Virtual COM Port at 115200 8N1.
Persistent flash
----------------
OpenOCD adds the STM32N6 ROM header to ``nuttx.bin`` and programs the
on-board NOR flash with its ``stmqspi`` driver. Use an OpenOCD version
that provides ``target/stm32n6x.cfg``.
Build and program the persistent boot image with:
.. code:: console
$ make flash
This erases the affected flash sectors, programs and verifies the image,
and resets the board. ``OPENOCD`` and ``OPENOCD_TARGET`` can override the
OpenOCD executable and target script. The board's ``scripts/flash.cfg``
configures the NOR pins, clocks and geometry for the native flash driver.
For a CMake build configured in ``build``:
.. code:: console
$ cmake --build build --target flash
Both targets build ``nuttx.bin`` before flashing. With CMake, ``OPENOCD``
and ``OPENOCD_TARGET`` are cache variables set with ``-D`` at configuration.
The boot ROM loads NuttX from flash and starts it without a debugger or
separate FSBL.
The header and padding occupy the first 1 KiB at ``0x34180000``; NuttX is
linked at ``0x34180400``. The ROM download buffer limits the binary to
511 KiB. The generated image is unauthenticated and requires a device
that permits unauthenticated boot.
SRAM debugging
--------------
Build with ``make`` or ``cmake --build build``. Start OpenOCD using its
standard ST-LINK and STM32N6 scripts:
.. code:: console
$ openocd -f interface/stlink.cfg -c 'transport select swd' \
-f target/stm32n6x.cfg -c 'reset_config srst_only srst_nogate'
In another terminal, open the ELF with GDB. Use ``build/nuttx`` instead of
``nuttx`` for CMake:
.. code:: console
$ arm-none-eabi-gdb nuttx
(gdb) target extended-remote :3333
(gdb) monitor reset halt
(gdb) load
(gdb) set $msp = *(unsigned int *)0x34180400
(gdb) set $pc = *(unsigned int *)0x34180404
(gdb) hbreak nx_start
(gdb) continue
``load`` writes the ELF sections into SRAM without programming external
flash. The next two commands initialize the stack pointer and entry point
from the vector table. Continue again after reaching ``nx_start`` to run
NSH. Reset before each reload; resetting after ``load`` boots the image
stored in flash instead. The SRAM image is lost on power-off.
To inspect an already running image, attach with its matching ELF and omit
the reset, load and register-setting commands.
NSH enables ``CONFIG_STM32N6_DEBUG`` to reopen debug access after ROM boot
and includes debug symbols. These debugging steps require an installed
image that enables debug access. Stop GDB and OpenOCD before running either
flash target.
Configurations
==============
nsh
---
Minimal NuttShell configuration.

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4
Documentation/platforms/arm/stm32n6/index.rst
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@ -5,10 +5,6 @@ ST STM32N6
This is a port of NuttX to the STM32N6 family.
The STM32N6 is a chip based on the Arm Cortex-M55.
Development is performed on the Nucleo-N657X0-Q. At this time only the
STM32N657X0 is supported. Kconfig will need updates to support other
MCUs in the family.
Supported MCUs
==============

12
boards/Kconfig
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@ -3498,6 +3498,14 @@ config ARCH_BOARD_NUCLEO_N657X0_Q
code directly into SRAM via the on-board ST-Link V3EC, with
the NSH console on USART1 (ST-Link Virtual COM Port).
config ARCH_BOARD_STM32N6570_DK
bool "STM32N6570-DK"
depends on ARCH_CHIP_STM32N657X0
select ARCH_HAVE_LEDS
---help---
STMicro STM32N6570-DK Discovery kit based on the STM32N657X0
MCU (Cortex-M55).
config ARCH_BOARD_STM32L562E_DK
bool "STM32L562E-DK"
depends on ARCH_CHIP_STM32L562QE
@ -4302,6 +4310,7 @@ config ARCH_BOARD
default "nucleo-h533re" if ARCH_BOARD_NUCLEO_H533RE
default "nucleo-h563zi" if ARCH_BOARD_NUCLEO_H563ZI
default "nucleo-n657x0-q" if ARCH_BOARD_NUCLEO_N657X0_Q
default "stm32n6570-dk" if ARCH_BOARD_STM32N6570_DK
default "nucleo-u5a5zj-q" if ARCH_BOARD_NUCLEO_U5A5ZJ_Q
default "nucleo-u3c5zi-q" if ARCH_BOARD_NUCLEO_U3C5ZI_Q
default "nucleo-c562re" if ARCH_BOARD_NUCLEO_C562RE
@ -5029,6 +5038,9 @@ endif
if ARCH_BOARD_NUCLEO_N657X0_Q
source "boards/arm/stm32n6/nucleo-n657x0-q/Kconfig"
endif
if ARCH_BOARD_STM32N6570_DK
source "boards/arm/stm32n6/stm32n6570-dk/Kconfig"
endif
if ARCH_BOARD_STM32L562E_DK
source "boards/arm/stm32l5/stm32l562e-dk/Kconfig"
endif

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boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt Normal file
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# ##############################################################################
# boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
# ##############################################################################
add_subdirectory(src)
if(CONFIG_RAW_BINARY)
set(OPENOCD
openocd
CACHE STRING "OpenOCD executable")
set(OPENOCD_TARGET
target/stm32n6x.cfg
CACHE STRING "OpenOCD target script")
add_custom_target(
flash
COMMAND
${OPENOCD} -f interface/stlink.cfg -c "transport select swd" -f
${OPENOCD_TARGET} -f ${CMAKE_CURRENT_LIST_DIR}/scripts/flash.cfg -c
"stm32n6_program nuttx.bin"
WORKING_DIRECTORY ${NUTTX_BINARY_DIR}
USES_TERMINAL VERBATIM)
add_dependencies(flash nuttx-bin)
endif()

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boards/arm/stm32n6/stm32n6570-dk/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
if ARCH_BOARD_STM32N6570_DK
endif

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#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="stm32n6570-dk"
CONFIG_ARCH_BOARD_STM32N6570_DK=y
CONFIG_ARCH_CHIP="stm32n6"
CONFIG_ARCH_CHIP_STM32=y
CONFIG_ARCH_CHIP_STM32N657X0=y
CONFIG_ARCH_CHIP_STM32N6=y
CONFIG_ARCH_INTERRUPTSTACK=4096
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARD_LOOPSPERMSEC=21000
CONFIG_BUILTIN=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_FS_PROCFS=y
CONFIG_HAVE_CXX=y
CONFIG_HAVE_CXXINITIALIZE=y
CONFIG_IDLETHREAD_STACKSIZE=4096
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_READLINE=y
CONFIG_RAM_SIZE=2620416
CONFIG_RAM_START=0x34180400
CONFIG_RAW_BINARY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_STM32N6_DEBUG=y
CONFIG_STM32_USART1=y
CONFIG_SYSTEM_NSH=y
CONFIG_USART1_SERIAL_CONSOLE=y

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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/include/board.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_ARM_STM32N6_STM32N6570_DK_INCLUDE_BOARD_H
#define __BOARDS_ARM_STM32N6_STM32N6570_DK_INCLUDE_BOARD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
/* Clock tree (single PLL1 fed from the internal HSI):
*
* HSI 64 MHz / M=4 * N=50 = 800 MHz VCO
* IC1 /4 = 200 MHz -> CPU clock (CPUSW)
* IC2 /8 = 100 MHz \
* IC6 /12 = 66.7 MHz > SYSCLK components (SYSSW IC2_IC6_IC11)
* IC11 /8 = 100 MHz /
* HPRE /2 = 50 MHz -> HCLK
* PPRE1 /1 = 50 MHz -> PCLK1
* PPRE2 /1 = 50 MHz -> PCLK2
*
* Works with the default VOS SCALE1, no SMPS overdrive required. Higher
* CPU frequencies (600/800 MHz) are deferred to a follow-up.
*/
#define STM32_HSI_FREQUENCY 64000000ul
#define STM32_PLL1_M 4
#define STM32_PLL1_N 50
#define STM32_PLL1_IC1_DIV 4
#define STM32_CPUCLK_FREQUENCY 200000000ul
#define STM32_SYSCLK_FREQUENCY (STM32_CPUCLK_FREQUENCY / 2)
#define STM32_HCLK_FREQUENCY (STM32_CPUCLK_FREQUENCY / 4)
#define STM32_PCLK1_FREQUENCY STM32_HCLK_FREQUENCY
#define STM32_PCLK2_FREQUENCY STM32_HCLK_FREQUENCY
/* Timer input clock = SYSCLK (TIMPRE=0 default) */
#define STM32_APB1_TIM_FREQUENCY STM32_SYSCLK_FREQUENCY
#define STM32_APB2_TIM_FREQUENCY STM32_SYSCLK_FREQUENCY
/* I/O voltage domains ******************************************************/
/* VDDIO2 and VDDIO3 are supplied at 1.8 V on the Discovery kit.
* Mark both supplies valid and select their 1.8 V range before the
* common STM32N6 startup configures I/O compensation.
*/
#define BOARD_PWR_VDDIO (PWR_SVMCR3_VDDIO2SV | PWR_SVMCR3_VDDIO3SV | \
PWR_SVMCR3_VDDIO2VRSEL | PWR_SVMCR3_VDDIO3VRSEL)
/* LED definitions **********************************************************/
/* LD1 (green, PO1) is active high; LD2 (red, PG10) is active low. */
/* LED index values for use with board_userled() */
#define BOARD_LED1 0
#define BOARD_LED2 1
#define BOARD_NLEDS 2
#define BOARD_LED_GREEN BOARD_LED1
#define BOARD_LED_RED BOARD_LED2
/* LED bits for use with board_userled_all() */
#define BOARD_LED1_BIT (1 << BOARD_LED1)
#define BOARD_LED2_BIT (1 << BOARD_LED2)
/* OS event indications when CONFIG_ARCH_LEDS is enabled:
*
* SYMBOL Meaning Green Red
* --------------------- ----------------------- ----- -----
*/
#define LED_STARTED 0 /* NuttX has started OFF OFF */
#define LED_HEAPALLOCATE 0 /* Heap allocated OFF OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON OFF */
#define LED_INIRQ 2 /* In an interrupt N/C N/C */
#define LED_SIGNAL 2 /* In a signal handler N/C N/C */
#define LED_ASSERTION 2 /* An assertion failed N/C N/C */
#define LED_PANIC 3 /* The system crashed OFF Blink */
/* Alternate function pin selections ****************************************/
/* USART1 GPIOs *************************************************************/
/* USART1 (ST-LINK Virtual COM Port): PE5=TX (AF7), PE6=RX (AF7)
* Connected to the on-board ST-Link to provide a Virtual COM Port.
*/
#define GPIO_USART1_TX GPIO_USART1_TX_1
#define GPIO_USART1_RX GPIO_USART1_RX_1
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: stm32_board_initialize
*
* Description:
* All STM32N6 architectures must provide the following entry point.
* This entry point is called early in the initialization -- after all
* memory has been configured and mapped but before any devices
* have been initialized.
*
****************************************************************************/
void stm32_board_initialize(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_STM32N6_STM32N6570_DK_INCLUDE_BOARD_H */

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##############################################################################
# boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
##############################################################################
include ${TOPDIR}/.config
include ${TOPDIR}/tools/Config.mk
include ${TOPDIR}/arch/arm/src/armv8-m/Toolchain.defs
ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)flash.ld
CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
AFLAGS := $(CFLAGS) -D__ASSEMBLY__
NXFLATLDFLAGS1 = -r -d -warn-common
NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)$(DELIM)binfmt$(DELIM)libnxflat$(DELIM)gnu-nxflat-pcrel.ld -no-check-sections
LDNXFLATFLAGS = -e main -s 2048
OPENOCD ?= openocd
OPENOCD_TARGET ?= target/stm32n6x.cfg
ifeq ($(CONFIG_RAW_BINARY),y)
define FLASH
$(Q) $(OPENOCD) -f interface/stlink.cfg -c 'transport select swd' \
-f $(OPENOCD_TARGET) -f $(BOARD_DIR)/scripts/flash.cfg \
-c 'stm32n6_program nuttx.bin'
endef
endif

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##############################################################################
# boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
##############################################################################
# Load interface/stlink.cfg and target/stm32n6x.cfg before this file.
reset_config srst_only srst_nogate
flash bank stm32n6570_dk.nor stmqspi 0x70000000 0 0 0 $_TARGETNAME 0x5802a000
proc stm32n6570_dk_flash_init {} {
# Stop inherited interrupts and instruction caching while OpenOCD runs
# SRAM algorithms. The boot ROM also leaves stack limits set.
mww 0xe000e010 0
mww 0xe000ed04 0x0a000000
mmw 0xe000ed14 0 0x20000
mww 0xe000ef50 0
reg msplim_s 0
reg psplim_s 0
reg primask_s 1
# PWR, GPION and all XSPIM clocks. Reset both XSPI controllers before
# restoring the direct XSPI2-to-port-2 mapping left changed by ROM.
mww 0x56028a5c 0x42000
mww 0x56028a60 0x3020
mww 0x56028a20 0x3020
mww 0x56029220 0x3020
# HCLK kernel source and conservative /8 prescaler.
mmw 0x56028158 0 0x30
# The DK NOR uses the 1.8 V VDDIO3 domain.
mmw 0x5602483c 0x04000200 0
# PN1 NCS, PN2 MOSI, PN3 MISO, PN6 CLK, AF9.
mmw 0x56023400 0x20a8 0x30fc
mmw 0x56023408 0x30fc 0
mmw 0x5602340c 0x504 0x3ffc
mmw 0x56023420 0x09009990 0x0f00fff0
# Map XSPI2 to port 2 and configure single-lane, 32-bit-address reads.
mww 0x5802b400 0
mww 0x5802a008 0x001a0700
mww 0x5802a00c 7
mww 0x5802a108 0
mww 0x5802a100 0x01003101
mww 0x5802a110 0x13
mww 0x5802a000 0x30000001
# MX66UW1G45G geometry and standard 4-byte read/program/erase commands.
# This part is absent from some OpenOCD JEDEC ID tables.
stmqspi set stm32n6570_dk.nor MX66UW1G45G 0x8000000 256 \
0x13 0 0x12 0x60 0x10000 0xdc
}
# Add the unauthenticated ROM header v2.3 (UM3234) as part of programming.
# The vector table follows the header and padding at offset 0x400.
proc stm32n6_program {image} {
set input [open $image rb]
set data [read $input]
close $input
# Jim Tcl strings can contain UTF-8; use the binary byte count.
set size [string bytelength $data]
if {$size < 8 || $size > 0x7fc00} {
error "NuttX binary must contain vectors and fit in 511 KiB"
}
binary scan $data ii stack entry
if {$stack < 0x34180400 || $stack > 0x34400000 || ($stack & 3)} {
error "Initial SP must be word-aligned and inside AXISRAM"
}
if {!($entry & 1) || ($entry & ~1) < 0x34180400 ||
($entry & ~1) >= 0x34180400 + $size} {
error "Reset vector must point into the payload at 0x34180400"
}
set checksum 0
binary scan $data c* bytes
foreach byte $bytes {
set checksum [expr {($checksum + ($byte & 0xff)) & 0xffffffff}]
}
set padding [expr {(-$size) & 31}]
set length [expr {0x1c0 + $size + $padding}]
set header [lrepeat 256 0]
foreach {offset value} [list \
0x00 0x324d5453 \
0x64 $checksum \
0x68 0x00020300 \
0x6c $length \
0x70 $entry \
0x78 0xffffffff \
0x84 0x80000000 \
0x88 0x1a0 \
0x8c 0x10 \
0xa0 0xffff5453 \
0xa4 0x1a0] {
lset header [expr {$offset / 4}] $value
}
set boot [file rootname $image]-boot.bin
set output [open $boot wb]
puts -nonewline $output [binary format i* $header]
puts -nonewline $output $data
puts -nonewline $output [binary format x$padding]
close $output
# Reject a truncated or incorrectly encoded image before touching flash.
if {[file size $boot] != 0x400 + $size + $padding} {
error "Boot image size does not match the ROM header"
}
# Keep the current debug access until the replacement image is verified.
init
halt
stm32n6570_dk_flash_init
echo [flash write_image erase $boot 0x70000000 bin]
echo [verify_image $boot 0x70000000 bin]
reset run
shutdown
}

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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 STM32N657X0 boot ROM copies the image from external flash into
* AXISRAM2. The STM32 image header occupies 0x34180000-0x341803ff;
* the vector table and payload start at 0x34180400. The ROM download
* buffer ends at 0x34200000, limiting the payload to 511 KiB.
* After boot, the remaining contiguous AXISRAM is available for data
* and the heap through 0x34400000.
*/
MEMORY
{
sram (rwx) : ORIGIN = 0x34180400, LENGTH = 2620416
}
OUTPUT_ARCH(arm)
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(.);
} > sram
.init_section : {
_sinit = ABSOLUTE(.);
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP(*(.init_array EXCLUDE_FILE(*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o) .ctors))
_einit = ABSOLUTE(.);
} > sram
.ARM.extab : {
*(.ARM.extab*)
} > sram
__exidx_start = ABSOLUTE(.);
.ARM.exidx : {
*(.ARM.exidx*)
} > sram
__exidx_end = ABSOLUTE(.);
.data : {
_eronly = ABSOLUTE(.);
_sdata = ABSOLUTE(.);
*(.data .data.*)
*(.gnu.linkonce.d.*)
CONSTRUCTORS
. = ALIGN(4);
_edata = ABSOLUTE(.);
} > sram
ASSERT(_edata <= 0x34200000,
"STM32N6 boot ROM payload exceeds 511 KiB")
.bss : {
_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) }
}

33
boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt Normal file
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# ##############################################################################
# boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
# ##############################################################################
set(SRCS stm32_boot.c stm32_bringup.c)
if(CONFIG_ARCH_LEDS)
list(APPEND SRCS stm32_autoleds.c)
else()
list(APPEND SRCS stm32_userleds.c)
endif()
target_sources(board PRIVATE ${SRCS})
set_property(GLOBAL PROPERTY LD_SCRIPT "${NUTTX_BOARD_DIR}/scripts/flash.ld")

36
boards/arm/stm32n6/stm32n6570-dk/src/Make.defs Normal file
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##############################################################################
# boards/arm/stm32n6/stm32n6570-dk/src/Make.defs
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
##############################################################################
-include $(TOPDIR)/Make.defs
ASRCS =
CSRCS = stm32_boot.c stm32_bringup.c
ifeq ($(CONFIG_ARCH_LEDS),y)
CSRCS += stm32_autoleds.c
else
CSRCS += stm32_userleds.c
endif
DEPPATH += --dep-path board
VPATH += :board
CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board

103
boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c Normal file
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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "stm32_gpio.h"
#include "stm32n6570-dk.h"
#ifdef CONFIG_ARCH_LEDS
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_autoled_initialize
*
* Description:
* Configure both user LEDs as outputs, initially off.
*
****************************************************************************/
void board_autoled_initialize(void)
{
stm32_configgpio(GPIO_LD1);
stm32_configgpio(GPIO_LD2);
}
/****************************************************************************
* Name: board_autoled_on
*
* Description:
* Indicate successful startup with the green LED and panic with red.
* Interrupt and signal events leave the LEDs unchanged.
*
****************************************************************************/
void board_autoled_on(int led)
{
switch (led)
{
case LED_STARTED:
stm32_gpiowrite(GPIO_LD1, false);
stm32_gpiowrite(GPIO_LD2, true);
break;
case LED_STACKCREATED:
stm32_gpiowrite(GPIO_LD1, true);
break;
case LED_PANIC:
stm32_gpiowrite(GPIO_LD1, false);
stm32_gpiowrite(GPIO_LD2, false);
break;
default:
break;
}
}
/****************************************************************************
* Name: board_autoled_off
*
* Description:
* Turn off the red LED between panic indications.
*
****************************************************************************/
void board_autoled_off(int led)
{
if (led == LED_PANIC)
{
stm32_gpiowrite(GPIO_LD2, true);
}
}
#endif /* CONFIG_ARCH_LEDS */

83
boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c Normal file
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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <nuttx/board.h>
#include "arm_internal.h"
#include "stm32n6570-dk.h"
#include <arch/board/board.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_board_initialize
*
* Description:
* All STM32 architectures must provide the following entry point. This
* entry point is called early in the initialization -- after all memory
* has been configured and mapped but before any devices have been
* initialized.
*
****************************************************************************/
void stm32_board_initialize(void)
{
#ifdef CONFIG_ARCH_LEDS
/* Configure on-board LEDs if LED support has been selected. */
board_autoled_initialize();
#endif
}
/****************************************************************************
* Name: board_late_initialize
*
* Description:
* If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
* initialization call will be performed in the boot-up sequence to a
* function called board_late_initialize(). board_late_initialize() will
* be called immediately after up_initialize() is called and just before
* the initial application is started. This additional initialization
* phase may be used, for example, to initialize board-specific device
* drivers.
*
****************************************************************************/
#ifdef CONFIG_BOARD_LATE_INITIALIZE
void board_late_initialize(void)
{
/* Perform board-specific initialization here if so configured */
stm32_bringup();
}
#endif

87
boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c Normal file
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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/mount.h>
#include <sys/types.h>
#include <syslog.h>
#include <debug.h>
#include <nuttx/board.h>
#include <nuttx/leds/userled.h>
#include "stm32n6570-dk.h"
#include <arch/board/board.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_bringup
*
* Description:
* Perform architecture-specific initialization
*
* CONFIG_BOARD_LATE_INITIALIZE=y :
* Called from board_late_initialize().
*
* CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
* Called from the NSH library
*
****************************************************************************/
int stm32_bringup(void)
{
#if defined(CONFIG_FS_PROCFS) || \
(!defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER))
int ret;
#endif
#ifdef CONFIG_FS_PROCFS
/* Mount the procfs file system. */
ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
}
#endif
#if !defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER)
/* Register the LED driver */
ret = userled_lower_initialize("/dev/userleds");
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
}
#endif
return OK;
}

127
boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c Normal file
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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <nuttx/debug.h>
#include <sys/param.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "stm32_gpio.h"
#include "stm32n6570-dk.h"
#ifndef CONFIG_ARCH_LEDS
/****************************************************************************
* Private Data
****************************************************************************/
/* This array maps an LED number to GPIO pin configuration and is indexed by
* BOARD_LED_<color>
*/
static const uint32_t g_ledcfg[BOARD_NLEDS] =
{
GPIO_LD1,
GPIO_LD2,
};
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_userled_initialize
*
* Description:
* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
* LEDs. If CONFIG_ARCH_LEDS is not defined, then the
* board_userled_initialize() is available to initialize the LEDs from user
* application logic.
*
****************************************************************************/
uint32_t board_userled_initialize(void)
{
int i;
/* Configure LD1 and LD2 GPIOs for output */
for (i = 0; i < nitems(g_ledcfg); i++)
{
stm32_configgpio(g_ledcfg[i]);
}
return BOARD_NLEDS;
}
/****************************************************************************
* Name: board_userled
*
* Description:
* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
* LEDs. If CONFIG_ARCH_LEDS is not defined, then the board_userled() is
* available to control the LEDs from user application logic.
*
****************************************************************************/
void board_userled(int led, bool ledon)
{
if ((unsigned)led < nitems(g_ledcfg))
{
/* LD1 is active high; LD2 is active low. */
stm32_gpiowrite(g_ledcfg[led], led == BOARD_LED_RED ? !ledon : ledon);
}
}
/****************************************************************************
* Name: board_userled_all
*
* Description:
* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
* LEDs. If CONFIG_ARCH_LEDS is not defined, then the board_userled_all()
* is available to control the LED from user application logic.
*
****************************************************************************/
void board_userled_all(uint32_t ledset)
{
int i;
/* Apply the polarity of each LED. */
for (i = 0; i < nitems(g_ledcfg); i++)
{
board_userled(i, (ledset & (1 << i)) != 0);
}
}
#endif /* !CONFIG_ARCH_LEDS */

80
boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h Normal file
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/****************************************************************************
* boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_ARM_STM32N6_STM32N6570_DK_SRC_STM32N6570_DK_H
#define __BOARDS_ARM_STM32N6_STM32N6570_DK_SRC_STM32N6570_DK_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stdint.h>
#include "stm32_gpio.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* LED definitions **********************************************************/
/* LD1 is active high; LD2 is active low. Start with both LEDs off. */
#define GPIO_LD1 (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_2MHZ | \
GPIO_OUTPUT_CLEAR | GPIO_PORTO | GPIO_PIN1)
#define GPIO_LD2 (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_2MHZ | \
GPIO_OUTPUT_SET | GPIO_PORTG | GPIO_PIN10)
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: stm32_bringup
*
* Description:
* Perform architecture-specific initialization
*
* CONFIG_BOARD_LATE_INITIALIZE=y :
* Called from board_late_initialize().
*
* CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
* Called from the NSH library
*
****************************************************************************/
int stm32_bringup(void);
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_STM32N6_STM32N6570_DK_SRC_STM32N6570_DK_H */