diff --git a/boards/st/stm32mp257f_ev1/Kconfig.stm32mp257f_ev1 b/boards/st/stm32mp257f_ev1/Kconfig.stm32mp257f_ev1
new file mode 100644
index 00000000000..5184ef6636e
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/Kconfig.stm32mp257f_ev1
@@ -0,0 +1,5 @@
+# Copyright (C) 2025 Savoir-faire Linux, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STM32MP257F_EV1
+	select SOC_STM32MP2X_M33 if BOARD_STM32MP257F_EV1_STM32MP257FXX_M33
diff --git a/boards/st/stm32mp257f_ev1/board.cmake b/boards/st/stm32mp257f_ev1/board.cmake
new file mode 100644
index 00000000000..eb52f9981fe
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/board.cmake
@@ -0,0 +1,9 @@
+# Copyright (C) 2025 Savoir-faire Linux, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+if(CONFIG_BOARD_STM32MP257F_EV1_STM32MP257FXX_M33)
+	board_runner_args(openocd "--config=${BOARD_DIR}/support/openocd_stm32mp257f_ev1_m33.cfg")
+	board_runner_args(openocd "--gdb-init=target extended-remote :3334")
+endif()
+
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
diff --git a/boards/st/stm32mp257f_ev1/board.yml b/boards/st/stm32mp257f_ev1/board.yml
new file mode 100644
index 00000000000..81cdba09064
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/board.yml
@@ -0,0 +1,6 @@
+board:
+  name: stm32mp257f_ev1
+  full_name: STM32MP257F-EV1 Evaluation Board
+  vendor: st
+  socs:
+    - name: stm32mp257fxx
diff --git a/boards/st/stm32mp257f_ev1/doc/img/stm32mp257f_ev1.webp b/boards/st/stm32mp257f_ev1/doc/img/stm32mp257f_ev1.webp
new file mode 100644
index 00000000000..ad2c6e8dd77
Binary files /dev/null and b/boards/st/stm32mp257f_ev1/doc/img/stm32mp257f_ev1.webp differ
diff --git a/boards/st/stm32mp257f_ev1/doc/index.rst b/boards/st/stm32mp257f_ev1/doc/index.rst
new file mode 100644
index 00000000000..15145e73735
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/doc/index.rst
@@ -0,0 +1,250 @@
+.. zephyr:board:: stm32mp257f_ev1
+
+Overview
+********
+
+The STM32MP257F-EV1 Evaluation board is designed as a complete demonstration
+and development platform for the STMicroelectronics STM32MP257F microprocessor
+based on Arm |reg| dual-core Cortex |reg|-A35 (1.5 GHz) and Cortex |reg|-M33
+(400 MHz), and the STPMIC25APQR companion chip.
+Zephyr OS is ported to run on the Cortex |reg|-M33 core, as a coprocessor of
+the Cortex |reg|-A35 core.
+
+Features:
+=========
+
+- STM32MP257FAI3 microprocessor featuring dual-core Arm |reg| Cortex |reg|-A35,
+  a Cortex |reg|-M33 and a Cortex |reg|-M0+ in a TFBGA436 package
+- ST power management STPMIC25APQR
+- Two 16-Gbit DDR4 DRAMs
+- 512-Mbit (64 Mbytes) S-NOR flash memory
+- 32-Gbit (4 Gbytes) eMMC v5.0
+- Three 1-Gbit/s Ethernet (RGMII) with TSN switch compliant with IEEE-802.3ab
+- High-speed USB Host 2-port hub
+- High-speed USB Type-C |reg| DRP
+- Four user LEDs
+- Two user, one tamper, and one reset push-buttons
+- One wake-up button
+- Four boot pin switches
+- Board connectors:
+
+  - Three Ethernet RJ45
+  - Two USB Host Type-A
+  - USB Type-C |reg|
+  - microSD |trade| card holder
+  - Mini PCIe
+  - Dual-lane MIPI CSI-2 |reg| camera module expansion connector
+  - Two CAN FD
+  - LVDS
+  - MIPI10
+  - GPIO expansion connector
+  - mikroBUS |trade| expansion connector
+  - VBAT for power backup
+
+- On-board STLINK-V3EC debugger/programmer with USB re-enumeration capability
+  Two Virtual COM ports (VCPs), and debug ports (JTAG/SWD)
+- Mainlined open-source Linux |reg| STM32 MPU OpenSTLinux Distribution and
+  STM32CubeMP2 software with examples
+- Linux |reg| Yocto project, Buildroot, and STM32CubeIDE as
+  development environments
+
+More information about the board can be found at the
+`STM32MP257F-EV1 website`_.
+
+Hardware
+********
+
+Cores:
+======
+
+- 64-bit dual-core Arm |reg| Cortex |reg|-A35 with 1.5 GHz max frequency
+  - 32-Kbyte I + 32-Kbyte D level 1 cache for each Cortex |reg|-A35 core
+  - 512-Kbyte unified level 2 cache
+  - Arm |reg| NEON |trade| and Arm |reg| TrustZone |reg|
+- 32-bit Arm |reg| Cortex |reg|-M33 with FPU/MPU, Arm |reg| TrustZone |reg|,
+  and 400 MHz max frequency
+  - L1 16-Kbyte ICache / 16-Kbyte DCache for Cortex |reg|-M33
+- 32-bit Arm |reg| Cortex |reg|-M0+ in SmartRun domain with 200 MHz max
+  frequency (up to 16 MHz in autonomous mode)
+
+Memories:
+=========
+
+- External DDR memory up to 4 Gbytes
+  - Up to DDR3L-2133 16/32-bit
+  - Up to DDR4-2400 16/32-bit
+  - Up to LPDDR4-2400 16/32-bit
+- 808-Kbyte internal SRAM: 256-Kbyte AXI SYSRAM, 128-Kbyte AXI video RAM or
+  SYSRAM extension, 256-Kbyte AHB SRAM, 128-Kbyte AHB SRAM with ECC in backup
+  domain, 8-Kbyte SRAM with ECC in backup domain, 32 Kbytes in SmartRun domain
+- Two Octo-SPI memory interfaces
+- Flexible external memory controller with up to 16-bit data bus: parallel
+  interface to connect external ICs, and SLC NAND memories with up to 8-bit ECC
+
+Power
+=====
+
+- STPMIC25 for voltage regulation (multiple buck/LDO regulators)
+- USB-C or 5V DC jack power input
+- VBAT backup battery connector (RTC, backup SRAM)
+
+Clock management
+================
+
+- External oscillators:
+  - 32.768 kHz LSE crystal
+  - 40 MHz HSE crystal
+- Internal oscillators:
+  - 64 MHz HSI oscillator
+  - 4 MHz CSI oscillator
+  - 32 kHz LSI oscillator
+  - Five separate PLLs with integer and fractional mode
+
+Security/Safety
+===============
+
+- Secure boot, TrustZone |reg| peripherals, active tamper, environmental
+  monitors, display secure layers, hardware accelerators
+- Complete resource isolation framework
+
+Connectivity
+============
+
+- 3x Gigabit Ethernet (RGMII, TSN switch capable)
+- 2x CAN FD
+- USB 2.0 High-Speed Host (dual-port)
+- USB Type-C |reg| DRP
+- mikroBUS |trade| expansion
+- GPIO expansion connector
+
+Display & Camera
+================
+
+- DSI interface (4-lane)
+- LVDS interface (4-lane)
+- Camera CSI-2 interface (2-lane)
+
+Debug
+=====
+
+- STLINK-V3EC (onboard debugger with VCP, JTAG and SWD)
+
+More information about STM32MP257F can be found here:
+
+- `STM32MP257F on www.st.com`_
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+Connections and IOs
+===================
+
+STM32MP257F-EV1 Evaluation Board schematic is available here:
+`STM32MP257F-EV1 Evaluation board schematics`_
+
+System Clock
+============
+
+Cortex |reg|-A35
+----------------
+
+Not yet supported in Zephyr.
+
+Cortex |reg|-M33
+----------------
+
+The Cortex |reg|-M33 Core is configured to run at a 400 MHz clock speed.
+
+Programming and Debugging
+*************************
+
+.. zephyr:board-supported-runners::
+
+Prerequisite
+============
+
+Before you can run Zephyr on the STM32MP257F-EV1 Evaluation board, you need to
+set up the Cortex |reg|-A35 core with a Linux |reg| environment. The Cortex
+|reg|-M33 core runs Zephyr as a coprocessor, and it requires the Cortex
+|reg|-A35 to load and start the firmware using remoteproc.
+
+One way to set up the Linux environment is to use the official ST
+OpenSTLinux distribution, following the `Starter Package`_. (more information
+about the procedure can be found in the `STM32MPU Wiki`_)
+
+Loading the firmware
+====================
+
+Once the OpenSTLinux distribution is installed on the board, the Cortex |reg|
+-A35 is responsible (in the current distribution) for loading the Zephyr
+firmware image in DDR and/or SRAM and starting the Cortex |reg| -M33 core. The
+application can be built using west, taking the :zephyr:code-sample:`blinky` as
+an example.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/basic/blinky
+   :board: stm32mp257f_ev1/stm32mp257fxx/m33
+   :goals: build
+
+The firmware can be copied to the board file system and started with the Linux
+remoteproc framework. (more information about the procedure can be found in the
+`STM32MP257F boot Cortex-M33 firmware`_)
+
+Debugging
+=========
+Applications can be debugged using OpenOCD and GDB. The OpenOCD files can be
+found at `device-stm-openocd`_.
+The firmware must first be started by the Cortex |reg|-A35. The debugger can
+then be attached to the running Zephyr firmware using OpenOCD.
+
+- Build the sample:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/basic/blinky
+   :board: stm32mp257f_ev1/stm32mp257fxx/m33
+   :goals: build
+
+- Copy the firmware to the board, load it and start it with remoteproc
+  (`STM32MP257F boot Cortex-M33 firmware`_). The orange LED should be blinking.
+- Attach to the target:
+
+.. code-block:: console
+
+   $ west attach
+
+References
+==========
+
+.. target-notes::
+
+.. _STM32MP257F-EV1 website:
+  https://www.st.com/en/evaluation-tools/stm32mp257f-ev1.html#overview
+
+.. _STM32MP257F-EV1 Evaluation board User Manual:
+  https://www.st.com/resource/en/user_manual/um3359-evaluation-board-with-stm32mp257f-mpu-stmicroelectronics.pdf
+
+.. _STM32MP257F-EV1 Evaluation board schematics:
+  https://www.st.com/resource/en/schematic_pack/mb1936-mp257f-x-d01-schematic.pdf
+
+.. _STM32MP25xC/F Evaluation board datasheet:
+  https://www.st.com/resource/en/datasheet/stm32mp257c.pdf
+
+.. _STM32MP257F on www.st.com:
+  https://www.st.com/en/microcontrollers-microprocessors/stm32mp257f.html
+
+.. _STM32MP257F reference manual:
+  https://www.st.com/resource/en/reference_manual/rm0457-stm32mp25xx-advanced-armbased-3264bit-mpus-stmicroelectronics.pdf
+
+.. _STM32MP257F boot Cortex-M33 firmware:
+  https://wiki.st.com/stm32mpu/wiki/Linux_remoteproc_framework_overview#Remote_processor_boot_through_sysfs
+
+.. _Starter Package:
+  https://wiki.st.com/stm32mpu/wiki/STM32MP25_Evaluation_boards_-_Starter_Package
+
+.. _STM32MPU Wiki:
+  https://wiki.st.com/stm32mpu/wiki/Main_Page
+
+.. _device-stm-openocd:
+  https://github.com/STMicroelectronics/device-stm-openocd/tree/main
diff --git a/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.dts b/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.dts
new file mode 100644
index 00000000000..35225a95a92
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.dts
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2025 Savoir-faire Linux, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <st/mp2/stm32mp257_m33.dtsi>
+
+/ {
+	model = "STMicroelectronics STM32MP257F-EV1 board";
+	compatible = "st,stm32mp257f-ev1", "st,stm32mp25";
+
+	chosen {
+		zephyr,flash = &ddr_code;
+		zephyr,sram = &ddr_sys;
+	};
+};
+
+&rcc {
+	clock-frequency = <DT_FREQ_M(400)>;
+};
diff --git a/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.yaml b/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.yaml
new file mode 100644
index 00000000000..127e2f85d8b
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.yaml
@@ -0,0 +1,24 @@
+identifier: stm32mp257f_ev1/stm32mp257fxx/m33
+name: STM32MP257F_EV1
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gccarmemb
+supported:
+  - LED
+  - gpio
+testing:
+  ignore_tags:
+    - cmsis_rtos_v2
+    - net
+    - mpu
+    - tinycrypt
+    - crypto
+    - aes
+    - cmm
+    - shell
+    - nfc
+ram: 8192
+flash: 8192
+vendor: st
diff --git a/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33_defconfig b/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33_defconfig
new file mode 100644
index 00000000000..a400e52c0cd
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33_defconfig
@@ -0,0 +1,10 @@
+# Copyright (C) 2025 Savoir-faire Linux, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+# Enable MPU
+CONFIG_ARM_MPU=y
+
+CONFIG_CLOCK_CONTROL=n
+
+# Enable HW stack protection
+CONFIG_HW_STACK_PROTECTION=y
diff --git a/boards/st/stm32mp257f_ev1/support/openocd_stm32mp257f_ev1_m33.cfg b/boards/st/stm32mp257f_ev1/support/openocd_stm32mp257f_ev1_m33.cfg
new file mode 100644
index 00000000000..a690cfa5499
--- /dev/null
+++ b/boards/st/stm32mp257f_ev1/support/openocd_stm32mp257f_ev1_m33.cfg
@@ -0,0 +1,10 @@
+# Only enable the Cortex-M33 debugger
+set EN_CA35_0 	0
+set EN_CA35_1 	0
+set EN_CM33   	1
+set EN_CM0P 	0
+
+source [find board/stm32mp25x_dk.cfg]
+
+# Set active target to Cortex-M33
+targets stm32mp25x.m33