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Posted to commits@nuttx.apache.org by ac...@apache.org on 2026/10/06 18:34:25 UTC
(nuttx) 03/03: boards/arm/stm32n6: add initial STM32N6570-DK support
This is an automated email from the ASF dual-hosted git repository.
acassis pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit 38d6c3b8bb83a9960ef446dae03738898bed405b
Author: raiden00pl <ra...@railab.me>
AuthorDate: Sat Sep 19 11:04:20 2026 +0200
boards/arm/stm32n6: add initial STM32N6570-DK support
add initial STM32N6570-DK support
Assisted-by: Codex:GPT-6
Signed-off-by: raiden00pl <ra...@railab.me>
---
.../arm/stm32n6/boards/stm32n6570-dk/index.rst | 108 ++++++++++++++
.../boards/stm32n6570-dk/stm32n6570-dk-back.jpg | Bin 0 -> 107955 bytes
.../boards/stm32n6570-dk/stm32n6570-dk-front.jpg | Bin 0 -> 75456 bytes
Documentation/platforms/arm/stm32n6/index.rst | 4 -
boards/Kconfig | 12 ++
boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt | 42 ++++++
boards/arm/stm32n6/stm32n6570-dk/Kconfig | 8 +
.../stm32n6/stm32n6570-dk/configs/nsh/defconfig | 37 +++++
boards/arm/stm32n6/stm32n6570-dk/include/board.h | 165 +++++++++++++++++++++
boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs | 47 ++++++
boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg | 148 ++++++++++++++++++
boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld | 109 ++++++++++++++
.../arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt | 33 +++++
boards/arm/stm32n6/stm32n6570-dk/src/Make.defs | 36 +++++
.../arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c | 103 +++++++++++++
boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c | 83 +++++++++++
.../arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c | 87 +++++++++++
.../arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c | 127 ++++++++++++++++
.../arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h | 80 ++++++++++
19 files changed, 1225 insertions(+), 4 deletions(-)
diff --git a/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst
new file mode 100644
index 00000000000..6e2fdd53391
--- /dev/null
+++ b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst
@@ -0,0 +1,108 @@
+================
+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.
diff --git a/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-back.jpg b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-back.jpg
new file mode 100644
index 00000000000..de32714d373
Binary files /dev/null and b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-back.jpg differ
diff --git a/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-front.jpg b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-front.jpg
new file mode 100644
index 00000000000..ec4da9bec4a
Binary files /dev/null and b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-front.jpg differ
diff --git a/Documentation/platforms/arm/stm32n6/index.rst b/Documentation/platforms/arm/stm32n6/index.rst
index 241cca916c3..fdc1fd004e5 100644
--- a/Documentation/platforms/arm/stm32n6/index.rst
+++ b/Documentation/platforms/arm/stm32n6/index.rst
@@ -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
==============
diff --git a/boards/Kconfig b/boards/Kconfig
index 17f3873221b..bd03388b768 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -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
diff --git a/boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt b/boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt
new file mode 100644
index 00000000000..e2233dd6aa1
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt
@@ -0,0 +1,42 @@
+# ##############################################################################
+# 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()
diff --git a/boards/arm/stm32n6/stm32n6570-dk/Kconfig b/boards/arm/stm32n6/stm32n6570-dk/Kconfig
new file mode 100644
index 00000000000..dfcb5c354a4
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/Kconfig
@@ -0,0 +1,8 @@
+#
+# 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
diff --git a/boards/arm/stm32n6/stm32n6570-dk/configs/nsh/defconfig b/boards/arm/stm32n6/stm32n6570-dk/configs/nsh/defconfig
new file mode 100644
index 00000000000..eb07976447c
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/configs/nsh/defconfig
@@ -0,0 +1,37 @@
+#
+# 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
diff --git a/boards/arm/stm32n6/stm32n6570-dk/include/board.h b/boards/arm/stm32n6/stm32n6570-dk/include/board.h
new file mode 100644
index 00000000000..bcd57f8d0ee
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/include/board.h
@@ -0,0 +1,165 @@
+/****************************************************************************
+ * 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 */
diff --git a/boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs b/boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs
new file mode 100644
index 00000000000..8c64959b07a
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs
@@ -0,0 +1,47 @@
+##############################################################################
+# 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
diff --git a/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg
new file mode 100644
index 00000000000..5134077c371
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg
@@ -0,0 +1,148 @@
+##############################################################################
+# 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
+}
diff --git a/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld
new file mode 100644
index 00000000000..54fb1d8846e
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld
@@ -0,0 +1,109 @@
+/****************************************************************************
+ * 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) }
+}
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt b/boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt
new file mode 100644
index 00000000000..9304da05ae5
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt
@@ -0,0 +1,33 @@
+# ##############################################################################
+# 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")
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/Make.defs b/boards/arm/stm32n6/stm32n6570-dk/src/Make.defs
new file mode 100644
index 00000000000..0714c5c2dcc
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/Make.defs
@@ -0,0 +1,36 @@
+##############################################################################
+# 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
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c
new file mode 100644
index 00000000000..aa42aa4d869
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c
@@ -0,0 +1,103 @@
+/****************************************************************************
+ * 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 */
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c
new file mode 100644
index 00000000000..b84940016a4
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c
@@ -0,0 +1,83 @@
+/****************************************************************************
+ * 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
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c
new file mode 100644
index 00000000000..82212af087b
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c
@@ -0,0 +1,87 @@
+/****************************************************************************
+ * 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;
+}
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c
new file mode 100644
index 00000000000..4c748429405
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c
@@ -0,0 +1,127 @@
+/****************************************************************************
+ * 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 */
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h b/boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h
new file mode 100644
index 00000000000..586aeb3ee3f
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+ * 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 */