STM32MPU Developer Package

Applicable for

STM32MP13x lines, STM32MP15x lines, STM32MP25x lines

---

This article describes how to get and use the Developer Package of the STM32MPU Embedded Software for any development platform of the STM32MP1 series (STM32MP15 boards and STM32MP13 boards) and STM32MP2 series (STM32MP25 boards), in order to modify some of its pieces of software, or to add applications on top of it.

It lists some prerequisites in terms of knowledge and development environment, and gives the step-by-step approach to download and install the STM32MPU Embedded Software components for this Package.

Finally, it proposes some guidelines to upgrade (add, remove, configure, improve...) any piece of software.

1. Developer Package content

If you are not yet familiar with the STM32MPU Embedded Software distribution and its Packages, read the following articles:

• Which STM32MPU Embedded Software Package better suits your needs (and especially the Developer Package chapter)
• STM32MPU Embedded Software distribution

If you are already familiar with the Developer Package for the STM32MPU Embedded Software distribution, the fast links to essential commands might interest you.

To sum up, this Developer Package provides:

• for the OpenSTLinux distribution (development on Arm^® Cortex^®-A processor):
  • the software development kit (SDK), based on Yocto SDK, for cross-development on a host PC
  • the following pieces of software in source code:
    • Linux^® kernel
    • gcnano-driver
    • U-Boot
    • Trusted Firmware-A (TF-A)
    • Open source Trusted Execution Environment (OP-TEE)
    • External device tree (for STM32MP25x lines  only)
• for the Cortex^®-M processor firmware development (only for STM32MP15x lines  and STM32MP25x lines ):
  • the integrated development environment (IDE) (STM32CubeIDE)
  • the STM32CubeMPU Package including all pieces of software (BSP, HAL, middlewares, and applications) in source code
  • the Trusted Firmware-M (TF-M) in source code (for STM32MP25x lines  only)
• the debug symbol files for Linux^® kernel, U-Boot, TF-A, OP-TEE, and TF-M (for STM32MP25x lines  only)

Note that the application frameworks for the OpenSTLinux distribution are not available as source code in this Package.

Components of the Developer Package
TF-M is available only for STM32MP25x lines 

2. Developer Package step-by-step overview

The steps to get the STM32MPU Embedded Software Developer Package ready for your developments are:
☐ Checking the prerequisites
☐ Installing the Starter Package for your board

☐ Installing the components to develop software running on Arm^® Cortex^®-A (OpenSTLinux distribution)

☐ Installing the SDK (mandatory for any development on Arm^® Cortex^®-A)

☐ Installing the OpenSTLinux BSP package (mandatory only if you plan to modify the Linux kernel, to add external out-of-tree Linux kernel modules, to modify U-Boot, TF-A, OP-TEE OS)

☐ Installing the debug symbol files (mandatory only if you plan to debug Linux^® kernel, U-Boot, OP-TEE, or TF-A with GDB)

☐ Installing the components to develop software running Arm Cortex-M (STM32CubeMPU Package)

☐ Installing STM32CubeIDE (mandatory for any development on Arm^® Cortex^®-M)

☐ Installing the STM32CubeMPU Package (mandatory only if you plan to modify the STM32Cube firmware)

Once these steps are achieved, you are able to:

• develop software running on Arm Cortex-A
  • Modifying the Linux kernel
  • Adding Linux user space applications
  • Modifying the U-Boot
  • Modifying the TF-A
  • Modifying the OP-TEE
• develop software running on Arm Cortex-M (only on STM32MP15x lines  and STM32MP25x lines )

3. Checking the prerequisites

3.1. Knowledges

The STM32MPU Developer Package aims at enriching a Linux-based software for the targeted product: basic knowledge about Linux are recommended to make the most of this Package.

Having a look at the STM32MPU Embedded Software architecture overview is also highly recommended.

3.2. Development setup

The recommended setup for the development PC (host) is specified in the following article: PC prerequisites.

Whatever the development platform (board) and development PC (host) used, the range of possible development setups is illustrated by the picture below.

Development setup for Developer and Distribution Packages

The following components are mandatory:

• Host PC for cross-compilation and cross-debugging, installed as specified above
• Board assembled and configured as specified in the associated Starter Package article
• Mass storage device (for example, microSD card) to load and update the software images (binaries)

The following components are optional, but recommended:

• A serial link between the host PC (through Terminal program) and the board for traces (even early boot traces), and access to the board from the remote PC (command lines)
• An Ethernet link between the host PC and the board for cross-development and cross-debugging through a local network. This is an alternative or a complement to the serial (or USB) link
• A display connected to the board, depending on the technologies available on the board: DSI LCD display, HDMI monitor (or TV) and so on
• A mouse and a keyboard connected through USB ports

Additional optional components can be added by means of the connectivity capabilities of the board: cameras, displays, JTAG, sensors, actuators, and much more.

4. Installing the Starter Package

Before developing with the Developer Package, it is essential to start up your board thanks to its Starter Package. All articles relative to Starter Packages are found in Category:Starter Package: find the one that corresponds to your board, and follow the installation instructions (if not yet done), before going further.

In brief, it means that:

• your board boots successfully
• the flashed image comes from the same release of the STM32MPU Embedded Software distribution as the components that will be downloaded in this article

Thanks to the Starter Package, all Flash partitions are populated.

Then, with the Developer Package, it is possible to modify or to upgrade the partitions independently one from the others.

For example, if you only want to modify the Linux kernel (part of bootfs partition), installing the SDK and the Linux kernel are enough; no need to install anything else.

5. Installing the components to develop software running on Arm Cortex-A (OpenSTLinux distribution)

5.1. Installing the SDK

Important

It is highly recommended to use the SDK provided here and not stuck on the SDK provided during the previous release. Effectively, some major improvements have been made since the previous release

Optional step: it is mandatory only if you want to modify or add software running on Arm Cortex-A (for example Linux kernel, Linux user space applications...).

The SDK for OpenSTLinux distribution provides a stand-alone cross-development toolchain and libraries tailored to the contents of the specific image flashed in the board. If you want to know more about this SDK, read the SDK for OpenSTLinux distribution article.

For STM32MP1 series

The STM32MP1 SDK is delivered through two tarball file named :

• unknown revision for x86_64 host architecture
• unknown revision for arm64 host architecture

Download and install the STM32MP1 SDK. The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA0048). The detailed content licenses can be found here.

	STM32MP1 Developer Package SDK - STM32MP1-Ecosystem-v5.1.0 release
Download	Go on st.com to download unknown revision file for x86_64 host architecture unknown revision file for arm64 host architecture
Installation	For x86_64 host architecture Uncompress the tarball file to get the SDK installation script. tar xvf unknown revision If needed, change the permissions on the SDK installation script so that it is executable. chmod +x unknown revision/unknown revision Run the SDK installation script. Use the -d <SDK installation directory absolute path> option to specify the absolute path to the directory in which you want to install the SDK (<SDK installation directory>). If you follow the proposition to organize the working directory, it means: ./unknown revision/unknown revision -d <working directory absolute path>/Developer-Package/SDK A successful installation outputs the following log: ST OpenSTLinux - Weston - (A Yocto Project Based Distro) SDK installer version 4.2.4-openstlinux-6.1-yocto-mickledore-mp1-v24.06.26 =================================================================================================================================== You are about to install the SDK to "<working directory absolute path>/Developer-Package/SDK". Proceed [Y/n]? Extracting SDK.........................................................................................................................................................................................................................done Setting it up...done SDK has been successfully set up and is ready to be used. Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g. $ . <working directory absolute path>/Developer-Package/SDK/environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi
	For arm64 host architecture tar xvf unknown revision If needed, change the permissions on the SDK installation script so that it is executable. chmod +x unknown revision/unknown revision Run the SDK installation script. Use the -d <SDK installation directory absolute path> option to specify the absolute path to the directory in which you want to install the SDK (<SDK installation directory>). If you follow the proposition to organize the working directory, it means: ./unknown revision/unknown revision -d <working directory absolute path>/Developer-Package/SDK A successful installation outputs the following log: ST OpenSTLinux - Weston - (A Yocto Project Based Distro) SDK installer version 4.2.1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21 =================================================================================================================================== You are about to install the SDK to "<working directory absolute path>/Developer-Package/SDK". Proceed [Y/n]? Extracting SDK.........................................................................................................................................................................................................................done Setting it up...done SDK has been successfully set up and is ready to be used. Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g. $ . <working directory absolute path>/Developer-Package/SDK/environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi
Release note	Details about the content of the SDK are available in the associated STM32 MPU ecosystem release note. If you are interested in older releases, please have a look into the section Archives.

• The SDK is in the <SDK installation directory>:

<SDK installation directory>                                      SDK for OpenSTLinux distribution: details in Standard SDK directory structure article
├── environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi  Environment setup script for Developer Package
├── site-config-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi
├── sysroots
│   ├── cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi                Target sysroot (libraries, headers, and symbols)
│   │   └── [...]
│   └── x86_64-ostl_sdk-linux                                     Native sysroot (libraries, headers, and symbols)
│       └── [...]
└── version-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi

For arm64 host architecture

<SDK installation directory>                                      SDK for OpenSTLinux distribution: details in Standard SDK directory structure article
├── environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi  Environment setup script for Developer Package
├── site-config-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi
├── sysroots
│   ├── cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi                Target sysroot (libraries, headers, and symbols)
│   │   └── [...]
│   └── aarch64-ostl_sdk-linux                                     Native sysroot (libraries, headers, and symbols)
│       └── [...]
└── version-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi

For STM32MP25x lines 

The STM32MP2 SDK is delivered through two tarball file named :

• unknown revision for x86_64 host architecture
• unknown revision for arm64 host architecture

Download and install the STM32MP2 SDK. The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA0048). The detailed content licenses can be found here.

	STM32MP2 Developer Package SDK - STM32MP2-Ecosystem-v5.1.0 release
Download	Follow instructions given in the downloading instructions page, if you didn't retrieve yet the files unknown revision file for x86_64 host architecture unknown revision file for arm64 host architecture
Installation	For x86_64 host architecture Uncompress the tarball file to get the SDK installation script. tar xvf unknown revision If needed, change the permissions on the SDK installation script so that it is executable. chmod +x unknown revision/unknown revision Run the SDK installation script. Use the -d <SDK installation directory absolute path> option to specify the absolute path to the directory in which you want to install the SDK (<SDK installation directory>). If you follow the proposition to organize the working directory, it means: ./unknown revision/unknown revision -d <working directory absolute path>/Developer-Package/SDK A successful installation outputs the following log: ST OpenSTLinux - Weston - (A Yocto Project Based Distro) SDK installer version unknown revision =================================================================================================================================== You are about to install the SDK to "<working directory absolute path>/Developer-Package/SDK". Proceed [Y/n]? Extracting SDK.........................................................................................................................................................................................................................done Setting it up...done SDK has been successfully set up and is ready to be used. Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g. $ . <working directory absolute path>/Developer-Package/SDK/environment-setup-cortexa35-ostl-linux
	For arm64 host architecture tar xvf unknown revision If needed, change the permissions on the SDK installation script so that it is executable. chmod +x unknown revision/unknown revision Run the SDK installation script. Use the -d <SDK installation directory absolute path> option to specify the absolute path to the directory in which you want to install the SDK (<SDK installation directory>). If you follow the proposition to organize the working directory, it means: ./unknown revision/unknown revision -d <working directory absolute path>/Developer-Package/SDK A successful installation outputs the following log: ST OpenSTLinux - Weston - (A Yocto Project Based Distro) SDK installer version unknown revision =================================================================================================================================== You are about to install the SDK to "<working directory absolute path>/Developer-Package/SDK". Proceed [Y/n]? Extracting SDK.........................................................................................................................................................................................................................done Setting it up...done SDK has been successfully set up and is ready to be used. Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g. $ . <working directory absolute path>/Developer-Package/SDK/environment-setup-cortexa35-ostl-linux
Release note	Details about the content of the SDK are available in the associated STM32 MPU ecosystem release note. If you are interested in older releases, please have a look into the section Archives.

• The SDK is in the <SDK installation directory>:

<SDK installation directory>                                      SDK for OpenSTLinux distribution: details in Standard SDK directory structure article
├── environment-setup-cortexa35-ostl-linux                        Environment setup script for Developer Package
├── site-config-cortexa35-ostl-linux
├── sysroots
│   ├── cortexa35-ostl-linux                                      Target sysroot (libraries, headers, and symbols)
│   │   └── [...]
│   └── x86_64-ostl_sdk-linux                                     Native sysroot (libraries, headers, and symbols)
│       └── [...]
└── version-cortexa35-ostl-linux

For arm64 host architecture

<SDK installation directory>                                      SDK for OpenSTLinux distribution: details in Standard SDK directory structure article
├── environment-setup-cortexa35-ostl-linux                        Environment setup script for Developer Package
├── site-config-cortexa35-ostl-linux
├── sysroots
│   ├── cortexa35-ostl-linux                                      Target sysroot (libraries, headers, and symbols)
│   │   └── [...]
│   └── aarch64-ostl_sdk-linux                                     Native sysroot (libraries, headers, and symbols)
│       └── [...]
└── version-cortexa35-ostl-linux

Warning

Now that the SDK is installed, do not move or rename the <SDK installation directory>.

5.1.1. Starting up the SDK

The SDK environment setup script must be run once in each new working terminal in which you cross-compile:

For STM32MP1 series

source <SDK installation directory>/environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi

The following checkings allow to ensure that the environment is correctly setup:

• Check the target architecture

echo $ARCH
arm

• Check the toolchain binary prefix for the target tools

echo $CROSS_COMPILE
arm-ostl-linux-gnueabi-

• Check the C compiler version

$CC --version
arm-ostl-linux-gnueabi-gcc (GCC) <GCC version>
[...]

• Check that the SDK version is the expected one

echo $OECORE_SDK_VERSION
<expected SDK version>

For STM32MP25x lines 

source <SDK installation directory>/environment-setup-cortexa35-ostl-linux

The following checkings allow to ensure that the environment is correctly setup:

• Check the target architecture

echo $ARCH
arm64

• Check the toolchain binary prefix for the target tools

echo $CROSS_COMPILE
aarch64-ostl-linux-

• Check the C compiler version

$CC --version
aarch64-ostl-linux-gcc (GCC) <GCC version>
[...]

• Check that the SDK version is the expected one

echo $OECORE_SDK_VERSION
<expected SDK version>

If any of these commands fails or does not return the expected result, try to reinstall the SDK.

5.2. Installing the OpenSTLinux BSP packages

Optional step: it is mandatory only if you want to modify the BSP (Linux kernel, TF-A, U-Boot, OP-TEE OS), or to add external out-of-tree Linux kernel modules.

For STM32MP1 series:

The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA0048). The detailed content licenses can be found here.

• The OpenSTLinux BSP package is delivered through a tarball file named unknown revision for STM32MP157x-EV1 , STM32MP157x-DKx and STM32MP135x-DK boards.

• Download and install the STM32MP1 OpenSTLinux BSP package.

	STM32MP1 Developer Package - STM32MP1 ecosystem v5.1.0 release
Download	Go on st.com to download the STM32MP1 Developer Package, unknown revision file.
Installation	Go to the host PC directory where you extracted the package from the .jar file if you follow the proposition to organize the working directory, that is: cd <working directory path>/Developer-Package tar xvf unknown revision
Release note	Details about the content of the OpenSTLinux BSP package are available in the associated STM32 MPU OpenSTLinux release note. For information on older releases, go to Archives.

• In the <Developer Package installation directory>/unknown revision, a tarball archive of the OpenSTLinux BSP components can be found.

• The Linux kernel installation directory is named linux-stm32mp-<kernel version>:

unknown revision	Linux kernel installation directory
├── [*].patch				ST patches to apply during the Linux kernel preparation (see next chapter)
├── fragment-[*].config			ST configuration fragments to apply during the Linux kernel configuration (see next chapter)
├── optional-fragment-[*].config	Optional ST configuration fragments to apply during the Linux kernel configuration depending on your needs (SMP or not, signature or not, ...)
├── unknown revision			Tarball file of the Linux kernel source code
├── README.HOW_TO.txt			Helper file for Linux kernel management: reference for Linux kernel build
└── series				List of all ST patches to apply

• The gcnano driver installation directory is named gcnano-driver-stm32mp-<gcnano driver version>:

unknown revision		gcnano-driver installation directory
├── unknown revision	Tarball file of the gcnano-driver source code
└── README.HOW_TO.txt					Helper file for gcnano-driver management: reference for gcnano-driver  build

• The U-Boot installation directory is named u-boot-stm32mp-<U-Boot version>:

unknown revision			U-Boot installation directory
├── [*].patch						ST patches to apply during the U-Boot preparation (see next chapter)
├── fiptool-stm32mp					tool for fip generation
├── unknown revision			U-Boot source code directory
├── Makefile.sdk					Makefile for the U-Boot compilation
├── README.HOW_TO.txt					Helper file for U-Boot management: reference for U-Boot build
├── series						List of all ST patches to apply
└── unknown revision	Tarball file of the U-Boot source code

• The TF-A installation directory is named tf-a-stm32mp-<TF-A version>:

unknown revision		TF-A installation directory
├── [*].patch					ST patches to apply during the TF-A preparation (see next chapter)
├── fiptool-stm32mp					tool for fip generation
├── unknown revision		TF-A source code directory
├── Makefile.sdk				Makefile for the TF-A compilation
├── README.HOW_TO.txt				Helper file for TF-A management: reference for TF-A build
├── series					List of all ST patches to apply
└── unknown revision	Tarball file of the TF-A source code

• The OP-TEE installation directory is named optee-os-stm32mp-<OP-TEE version>:

unknown revision			OP-TEE installation directory
├── [*].patch						ST patches to apply during the OP-TEE preparation (see next chapter)
├── fiptool-stm32mp					tool for fip generation
├── unknown revision			OP-TEE source code directory
├── fonts.tar.gz					fonts for OPTEE-OS
├── Makefile.sdk					Makefile for the OP-TEE compilation
├── unknown revision	Tarball file of the OP-TEE source code
├── README.HOW_TO.txt					Helper file for OP-TEE management: reference for OP-TEE build
└── series						List of all ST patches to apply

• The FIP artifacts directory is named FIP_artifacts:

FIP_artifacts
├── arm-trusted-firmware
│   ├── fwconfig
│   │   ├── stm32mp13[*]-fw-config-optee.dtb		Device tree for FW config → STM32MP13 boards
│   │   └── stm32mp15[*]-fw-config-optee.dtb		Device tree for FW config → STM32MP15 boards
│   ├── metada.bin					Store boot information
│   ├── tf-a-stm32mp13[*].stm32				FSBL binary→ STM32MP13 boards
│   └── tf-a-stm32mp15[*].stm32				FSBL binary → STM32MP15 boards
├── optee
│   ├── tee-header_v2-stm32mp13[*].bin			Binary file for OP-TEE OS → STM32MP13 boards
│   ├── tee-header_v2-stm32mp15[*].bin			Binary file for OP-TEE OS → STM32MP15 kits
│   ├── tee-pageable_v2-stm32mp13[*].bin		Binary file for OP-TEE OS → STM32MP13 boards
│   ├── tee-pageable_v2-stm32mp15[*].bin		Binary file for OP-TEE OS → STM32MP15 boards
│   ├── tee-pager_v2-stm32mp13[*].bin			Binary file for OP-TEE OS → STM32MP13 boards
│   └── tee-pager_v2-stm32mp15[*].bin			Binary file for OP-TEE OS → STM32MP15 boards
└── u-boot
    ├── u-boot-nodtb-stm32mp13-default.bin
    ├── u-boot-nodtb-stm32mp15-default.bin
    ├── u-boot-nodtb-stm32mp13-fastboot-sdcard.bin	Binary file for fastboot on SD-Card for STM32MP13 boards
    ├── u-boot-nodtb-stm32mp15-fastboot-emmc.bin	Binary file for fastboot on eMMC for STM32MP15 boards
    ├── u-boot-nodtb-stm32mp15-fastboot-sdcard.bin	Binary file for fastboot on SD-Card for STM32MP15 boards
    ├── u-boot-stm32mp13[*].dtb				Device tree for U-Boot → STM32MP13 boards
    └── u-boot-stm32mp15[*].dtb				Device tree for U-Boot → STM32MP15 boards

• The debug symbol files are located under the <Developer Package installation directory>/unknown revision directory:

stm32mp1 ├── arm-trusted-firmware │   └── debug │      ├── debug-tf-a-stm32mp13[*].stm32 Debug file for FSBL → STM32MP13 boards │      ├── debug-tf-a-stm32mp15[*].stm32 Debug file for FSBL → STM32MP15 boards │   ├── tf-a-bl2-stm32mp13-sdcard.elf Debug symbol file for TF-A → TF-A for STM32MP13 boards for emmc boot stage │   ├── tf-a-bl2-stm32mp13-uart.elf Debug symbol file for TF-A → TF-A for STM32MP13 boards for UART downloading boot stage │   ├── tf-a-bl2-stm32mp13-usb.elf Debug symbol file for TF-A → TF-A for STM32MP13 boards for USB downloading boot stage │   ├── tf-a-bl2-stm32mp15-emmc.elf Debug symbol file for TF-A → TF-A for STM32MP15 for emmc boot stage │   ├── tf-a-bl2-stm32mp15-nand.elf Debug symbol file for TF-A → TF-A for STM32MP15 for nand boot stage │   ├── tf-a-bl2-stm32mp15-nor.elf Debug symbol file for TF-A → TF-A for STM32MP15 for nor boot stage │   ├── tf-a-bl2-stm32mp15-sdcard.elf Debug symbol file for TF-A → TF-A for STM32MP15 for SDcard boot stage │   ├── tf-a-bl2-stm32mp15-uart.elf Debug symbol file for TF-A → TF-A for STM32MP15 for UART downloading boot stage │   └── tf-a-bl2-stm32mp15-usb.elf Debug symbol file for TF-A → TF-A for STM32MP15 for USB downloading boot stage ├── kernel │   ├── config-6.1.82 Reference Config file for Linux kernel │   ├── vmlinux Image of the Linux kernel ├── optee │   └── debug │   ├── tee-stm32mp135f-dk.elf Debug symbol file for OP-TEE OS → STM32MP13 Discovery kits │   ├── tee-stm32mp157a-dk1.elf Debug symbol file for OP-TEE OS → STM32MP15 Discovery kits │   ├── tee-stm32mp157a-ev1.elf Debug symbol file for OP-TEE OS → STM32MP15 Evaluation boards │   ├── tee-stm32mp157c-dk2.elf Debug symbol file for OP-TEE OS → STM32MP15 Discovery kits │   ├── tee-stm32mp157c-ed1.elf Debug symbol file for OP-TEE OS → STM32MP15 Evaluation boards │   ├── tee-stm32mp157c-ev1.elf Debug symbol file for OP-TEE OS → STM32MP15 Evaluation boards │   ├── tee-stm32mp157d-dk1.elf Debug symbol file for OP-TEE OS → STM32MP15 Discovery kits │   ├── tee-stm32mp157d-ev1.elf Debug symbol file for OP-TEE OS → STM32MP15 Evaluation boards │   ├── tee-stm32mp157f-dk2.elf Debug symbol file for OP-TEE OS → STM32MP15 Discovery kits │   ├── tee-stm32mp157f-ed1.elf Debug symbol file for OP-TEE OS → STM32MP15 Evaluation boards │   └── tee-stm32mp157f-ev1.elf Debug symbol file for OP-TEE OS → STM32MP15 Evaluation boards └── u-boot └── debug ├── u-boot-stm32mp13-default.elf Debug symbol file for U-Boot → STM32MP13 Discovery kits ├── u-boot-stm32mp*-fastboot*.elf Debug symbol file for U-Boot with fastboot enabled └── u-boot-stm32mp13-default.elf Debug symbol file for U-Boot → STM32MP13 Discovery kits

For STM32MP25x lines :

The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA0048). The detailed content licenses can be found here.

• The OpenSTLinux BSP package is delivered through a tarball file named unknown revision for STM32MP257F-EV1 boards.

• Download and install the STM32MPU OpenSTLinux BSP package.

	STM32MPU Developer Package - STM32MPU ecosystem v5.1.0 release
Download	If you didn't retrieve yet the file unknown revision, please follow instructions on the downloading instructions page.
Installation	Go to the host PC directory where you extracted the package from the .jar file if you follow the proposition to organize the working directory, that is: cd <working directory path>/Developer-Package tar xvf unknown revision
Release note	Details about the content of the OpenSTLinux BSP package are available in the associated STM32 MPU OpenSTLinux release note. For information on older releases, go to Archives.

• In sub-directories from <Developer Package installation directory>/unknown revision, several tarball archive of the OpenSTLinux BSP components can be found.

• The external device tree directory is named external-dt-<ext-dt version>:

unknown revision		external device tree installation directory
├── unknown revision	Tarball file of the external device tree source code
└── README.HOW_TO.txt				Helper file for external device tree management: reference for external device tree usage

• The Linux kernel installation directory is named linux-stm32mp-<kernel version>:

unknown revision	Linux kernel installation directory
├── [*].patch					ST patches to apply during the Linux kernel preparation (see next chapter)
├── fragment-[*].config				ST configuration fragments to apply during the Linux kernel configuration (see next chapter)
├── optional-fragment-[*].config		Optional ST configuration fragments to apply during the Linux kernel configuration depending on your needs (SMP or not, signature or not, ...)
├── unknown revision				Tarball file of the Linux kernel source code
├── README.HOW_TO.txt				Helper file for Linux kernel management: reference for Linux kernel build
└── series					List of all ST patches to apply

• The gcnano driver installation directory is named gcnano-driver-stm32mp-<gcnano driver version>:

unknown revision			gcnano-driver installation directory
├── [*].patch							ST patches to apply during the gcnano driver preparation (see next chapter)
├── unknown revision	Tarball file of the gcnano-driver source code
├── README.HOW_TO.txt						Helper file for gcnano-driver management: reference for gcnano-driver  build
└── series							List of all ST patches to apply

• The ddr phy installation directory is named stm32mp-ddr-phy-<ddr phy version>:

unknown revision			ddr-phy installation directory
├── unknown revision	Tarball file of the stm32mp-ddr-phy binaries
└── README.HOW_TO.txt						Helper file for ddr phy management: reference for ddr-phy use

• The OP-TEE installation directory is named optee-os-stm32mp-<OP-TEE version>:

unknown revision		OP-TEE installation directory
├── [*].patch						ST patches to apply during the OP-TEE preparation (see next chapter)
├── fiptool-stm32mp					tool for fip generation
├── fonts.tar.gz					fonts for OPTEE-OS
├── Makefile.sdk					Makefile for the OP-TEE compilation
├── unknown revision	Tarball file of the OP-TEE source code
├── README.HOW_TO.txt					Helper file for OP-TEE management: reference for OP-TEE build
└── series						List of all ST patches to apply

• The U-Boot installation directory is named u-boot-stm32mp-<U-Boot version>:

unknown revision		U-Boot installation directory
├── [*].patch						ST patches to apply during the U-Boot preparation (see next chapter)
├── fiptool-stm32mp					tool for fip generation
├── fragment-[*].fb_cfg					ST configuration fragments to apply during the U-Boot configuration to support fastboot
├── Makefile.sdk					Makefile for the U-Boot compilation
├── README.HOW_TO.txt					Helper file for U-Boot management: reference for U-Boot build
├── series						List of all ST patches to apply
└── unknown revision	Tarball file of the U-Boot source code

• The TF-A installation directory is named tf-a-stm32mp-<TF-A version>:

unknown revision			TF-A installation directory
├── [*].patch						ST patches to apply during the TF-A preparation (see next chapter)
├── fiptool-stm32mp					tool for fip generation
├── Makefile.sdk					Makefile for the TF-A compilation
├── README.HOW_TO.txt					Helper file for TF-A management: reference for TF-A build
├── series						List of all ST patches to apply
├── tf-a-st-ddr.tar.gz					Tarball file of the DDR firmware
└── unknown revision	Tarball file of the TF-A source code

• The FIP artifacts directory is named FIP_artifacts:

FIP_artifacts
├── arm-trusted-firmware
│   ├── bl2
│   │   ├── tf-a-stm32mp257f-dk-[*]-optee-emmc.bin			TF-A binary for FSBL partition (eMMC boot device) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── tf-a-stm32mp257f-dk-[*]-optee-sdcard.bin			TF-A binary for FSBL partition (microSD card boot device) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── tf-a-stm32mp257f-dk-[*]-uart.bin				TF-A binary for uart serial boot partition (STM32CubeProgrammer) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── tf-a-stm32mp257f-dk-[*]-usb.bin				TF-A binary for usb serial boot partition (STM32CubeProgrammer) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── tf-a-stm32mp257f-dk-optee-emmc.bin
│   │   ├── tf-a-stm32mp257f-dk-optee-sdcard.bin
│   │   ├── tf-a-stm32mp257f-dk-uart.bin
│   │   ├── tf-a-stm32mp257f-dk-usb.bin
│   │   ├── tf-a-stm32mp257f-ev1-[*]-optee-emmc.bin			TF-A binary for FSBL partition (eMMC boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── tf-a-stm32mp257f-ev1-[*]-optee-sdcard.bin			TF-A binary for FSBL partition (microSD card boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── tf-a-stm32mp257f-ev1-[*]-uart.bin				TF-A binary for uart serial boot partition (STM32CubeProgrammer) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── tf-a-stm32mp257f-ev1-[*]-usb.bin				TF-A binary for usb serial boot partition (STM32CubeProgrammer) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── tf-a-stm32mp257f-ev1-optee-emmc.bin
│   │   ├── tf-a-stm32mp257f-ev1-optee-nor.bin
│   │   ├── tf-a-stm32mp257f-ev1-optee-sdcard.bin
│   │   ├── tf-a-stm32mp257f-ev1-uart.bin
│   │   └── tf-a-stm32mp257f-ev1-usb.bin
│   ├── bl31
│   │   ├── stm32mp257f-dk-[*]-bl31-optee-emmc.dtb			TF-A dtb for eMMC boot device for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── stm32mp257f-dk-[*]-bl31-optee-sdcard.dtb			TF-A dtb for sdcard boot device for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── stm32mp257f-ev1-[*]-bl31-optee-emmc.dtb			TF-A dtb for eMMC boot device for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── stm32mp257f-ev1-[*]-bl31-optee-nor.dtb			TF-A dtb for nor boot device for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── stm32mp257f-ev1-[*]-bl31-optee-sdcard.dtb			TF-A dtb for sdcard boot device for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── tf-a-bl31-stm32mp25-optee-emmc.bin
│   │   ├── tf-a-bl31-stm32mp25-optee-nor.bin
│   │   └── tf-a-bl31-stm32mp25-optee-sdcard.bin
│   ├── ddr
│   │   ├── ddr_pmu-stm32mp257f-dk-[*]-optee-emmc.bin			Trained DDR for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── ddr_pmu-stm32mp257f-dk-[*]-optee-sdcard.bin			Trained DDR for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── ddr_pmu-stm32mp257f-dk-[*]-uart.bin				Trained DDR for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── ddr_pmu-stm32mp257f-dk-[*]-usb.bin				Trained DDR for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   │   ├── ddr_pmu-stm32mp257f-ev1-[*]-optee-emmc.bin			Trained DDR for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── ddr_pmu-stm32mp257f-ev1-[*]-optee-nor.bin			Trained DDR for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── ddr_pmu-stm32mp257f-ev1-[*]-optee-sdcard.bin		Trained DDR for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   ├── ddr_pmu-stm32mp257f-ev1-[*]-uart.bin			Trained DDR for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   │   └── ddr_pmu-stm32mp257f-ev1-[*]-usb.bin				Trained DDR for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   ├── fwconfig
│   │   ├── stm32mp257f-dk-[*]-fw-config-optee-emmc.dtb
│   │   ├── stm32mp257f-dk-[*]-fw-config-optee-sdcard.dtb
│   │   ├── stm32mp257f-ev1-[*]-fw-config-optee-emmc.dtb
│   │   ├── stm32mp257f-ev1-[*]-fw-config-optee-nor.dtb
│   │   └── stm32mp257f-ev1-[*]-fw-config-optee-sdcard.dtb
│   ├── metadata.bin
│   ├── tf-a-stm32mp257f-dk-[*]-optee-emmc.stm32			TF-A binary for FSBL partition (eMMC boot device) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   ├── tf-a-stm32mp257f-dk-[*]-optee-sdcard.stm32			TF-A binary for FSBL partition (microSD card boot device) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   ├── tf-a-stm32mp257f-dk-[*]-uart.stm32				TF-A binary for uart serial boot partition (nor boot device) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   ├── tf-a-stm32mp257f-dk-[*]-usb.stm32				TF-A binary for usb serial boot partition (nor boot device) for STM32MP257F-DK OSTL → STM32MP25 Discovery boards
│   ├── tf-a-stm32mp257f-ev1-[*]-optee-emmc.stm32			TF-A binary for FSBL partition (eMMC boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   ├── tf-a-stm32mp257f-ev1-[*]-optee-nor.stm32			TF-A binary for FSBL partition (nor boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   ├── tf-a-stm32mp257f-ev1-[*]-optee-sdcard.stm32			TF-A binary for FSBL partition (microSD card boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   ├── tf-a-stm32mp257f-ev1-[*]-uart.stm32				TF-A binary for uart serial boot partition (nor boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
│   └── tf-a-stm32mp257f-ev1-[*]-usb.stm32				TF-A binary for usb serial boot partition (nor boot device) for STM32MP257F-EV1 OSTL → STM32MP25 Evaluation boards
├── optee
│   ├── tee-header_v2-stm32mp25[*].bin
│   ├── tee-pageable_v2-stm32mp25[*].bin
│   └── tee-pager_v2-stm32mp25[*].bin
└── u-boot
    ├── u-boot-nodtb-stm32mp25-default.bin				U-Boot binary → STM32MP5 boards
    ├── u-boot-nodtb-stm32mp25-fastboot-emmc.bin			U-Boot binary with fastboot on eMMC→ STM32MP5 boards
    ├── u-boot-nodtb-stm32mp25-fastboot-sdcard.bin			U-Boot binary with fastboot on SD-Card→ STM32MP5 boards
    └── u-boot-stm32mp25[*].dtb						Device tree for U-Boot → STM32MP5 boards

• The debug symbol files are located under the <Developer Package installation directory>/unknown revision directory:

stm32mp2 ├── arm-trusted-firmware │   ├── bl31 │   │   └── debug │   │   └── tf-a-bl31-stm32mp257f-[*].elf Debug symbol file for bl31 │   └── debug │   ├── debug-tf-a-stm32mp257f-[*].stm32 Debug file for FSBL → STM32MP25 boards │   ├── tf-a-bl2-stm32mp25-optee-emmc.elf Debug symbol file for TF-A → TF-A for STM32MP25 for eMMC boot stage │   ├── tf-a-bl2-stm32mp25-optee-nor.elf Debug symbol file for TF-A → TF-A for STM32MP25 for nor boot stage │   ├── tf-a-bl2-stm32mp25-optee-sdcard.elf Debug symbol file for TF-A → TF-A for STM32MP25 forsdcard boot stage │   ├── tf-a-bl2-stm32mp25-uart.elf Debug symbol file for TF-A → TF-A for STM32MP25 for UART downloading boot stage │   └── tf-a-bl2-stm32mp25-usb.elf Debug symbol file for TF-A → TF-A for STM32MP25 for USB downloading boot stage ├── kernel │   ├── config-6.1.82 Reference Config file for Linux kernel │   └── vmlinux Image of the Linux kernel ├── optee │   └── debug │   ├── tee-stm32mp257f-dk[*].elf Debug symbol file for OP-TEE OS → STM32MP25 Discovery kits │   └── tee-stm32mp257f-ev1[*].elf Debug symbol file for OP-TEE OS → STM32MP25 Evaluation boards └── u-boot └── debug ├── u-boot-stm32mp25-default.elf Debug symbol file for U-Boot → STM32MP25 ├── u-boot-stm32mp25-fastboot-emmc.elf Debug symbol file for fastboot on eMMC for U-Boot → STM32MP25 └── u-boot-stm32mp25-fastboot-sdcard.elf Debug symbol file for fastboot on SD-Card for U-Boot → STM32MP25

5.2.1. Building and deploying the external device tree for the first time (only on STM32MP25x lines )

Prerequisite: the SDK is installed.

Open the <external device tree installation directory>/README.HOW_TO.txt helper file, and execute its instructions to:
☐ setup a software configuration management (SCM) system (git) for the external device tree (optional but recommended)
☐ export the path of external device tree directory into the variable EXTDT_DIR

The external device tree is now set-up and can be used during compilation.

5.2.2. Building and deploying the Linux kernel for the first time

Prerequisite: the SDK is installed. It is mandatory to execute once the steps specified below before modifying the Linux kernel, or adding external out-of-tree Linux kernel modules.

The partitions related to the Linux kernel are:

• the bootfs partition that contains the Linux kernel U-Boot image (uImage) and device tree
• the rootfs partition that contains the Linux kernel modules

The Linux kernel might be cross-compiled, either in the source code directory, or in a dedicated directory different from the source code directory.
This last method is recommended as it clearly separates the files generated by the cross-compilation from the source code files.

Information

The README.HOW_TO.txt helper file is THE reference for the Linux kernel build

Warning

The SDK must be started

Open the <Linux kernel installation directory>/README.HOW_TO.txt helper file, and execute its instructions to:
☐ setup a software configuration management (SCM) system (git) for the Linux kernel (optional but recommended)
☐ prepare the Linux kernel (applying the ST patches)
☐ configure the Linux kernel (applying the ST fragments)
☐ cross-compile the Linux kernel
☐ deploy the Linux kernel (that is, update the software on board)

The Linux kernel is now installed: let's modify the Linux kernel.

5.2.3. Building and deploying the gcnano-driver for the first time (only on STM32MP15x lines  and STM32MP25x lines )

Prerequisite:

• the SDK is installed.
• the Linux kernel is built as explained here
  

It is mandatory to execute once the steps specified below before modifying gcnano-driver.

A kernel module depends on the Linux kernel version. If kernel module is not built with the correct Linux kernel, the kernel could refuse the module to be loaded.

Information

The README.HOW_TO.txt helper file is THE reference for the gcnano-driver build

Warning

The SDK must be started

Open the <gcnano-driver installation directory>/README.HOW_TO.txt helper file, and execute its instructions to:
☐ setup a software configuration management (SCM) system (git) for the gcnano-driver (optional but recommended)
☐ cross-compile the gcnano-driver
☐ deploy the gcnano-driver (that is, update the software on board)

The gcnano-driver is now installed.

5.2.4. Building and deploying the U-Boot for the first time

Prerequisite: the SDK is installed. It is mandatory to execute once the steps specified below before modifying the U-Boot.

As explained in the boot chain overview, the trusted boot chain is the default solution delivered by STMicroelectronics.

Within this scope, the partition related to the U-Boot is the ssbl one that contains the U-Boot and its device tree blob.

Information

The README.HOW_TO.txt helper file is THE reference for the U-Boot build

Warning

The SDK must be started

Open the <U-Boot installation directory>/README.HOW_TO.txt helper file, and execute its instructions to:
☐ setup a software configuration management (SCM) system (git) for the U-Boot (optional but recommended)
☐ prepare the U-Boot (applying the ST patches)
☐ cross-compile the U-Boot
☐ deploy the U-Boot (that is, update the software on board)

The U-Boot is now installed: let's modify the U-Boot.

5.2.5. Building and deploying the TF-A for the first time

Prerequisite: the SDK is installed. It is mandatory to execute once the steps specified below before modifying the TF-A.

As explained in the boot chain overview, the trusted boot chain is the default solution delivered by STMicroelectronics.

Within this scope, the partition related to the TF-A is the fsbl one.

Information

The README.HOW_TO.txt helper file is THE reference for the TF-A build

Warning

The SDK must be started

Open the <TF-A installation directory>/README.HOW_TO.txt helper file, and execute its instructions to:
☐ setup a software configuration management (SCM) system (git) for the TF-A (optional but recommended)
☐ prepare the TF-A (applying the ST patches)
☐ cross-compile the TF-A
☐ deploy the TF-A (that is, update the software on board)

The TF-A is now installed: let's modify the TF-A.

5.2.6. Building and deploying the OP-TEE for the first time

Prerequisite: the SDK is installed. It is mandatory to execute once the steps specified below before modifying the OP-TEE.

As explained in the boot chain overview, the trusted boot chain is the default solution delivered by STMicroelectronics. Within this scope, the partition related to the OP-TEE is the fsbl one.

Information

The README.HOW_TO.txt helper file is THE reference for the OP-TEE build

Warning

The SDK must be started

Open the <OP-TEE installation directory>/README.HOW_TO.txt helper file, and execute its instructions to:
☐ setup a software configuration management (SCM) system (git) for the OP-TEE (optional but recommended)
☐ prepare the OP-TEE (applying the ST patches)
☐ cross-compile the OP-TEE
☐ deploy the OP-TEE (that is, update the software on board)

The OP-TEE is now installed: let's modify the OP-TEE.

5.3. Installing the debug symbol files

Optional step: it is mandatory only if you want to debug Linux^® kernel, U-Boot, OP-TEE, or TF-A with GDB.

5.3.1. Using the debug symbol files

These files are used to debug the Linux^® kernel, U-Boot, OP-TEE, or TF-A with GDB. Especially, the Debug OpenSTLinux BSP components chapter explains how to load the debug symbol files in GDB.

6. Installing the components to develop software running on Arm Cortex-M (STM32CubeMPU Package) ( only on STM32MP15x lines  and STM32MP25x lines )

6.1. Installing STM32CubeIDE

Optional step: it is needed if you want to modify or add software running on Arm Cortex-M.

The table below explains how to download and install STM32CubeIDE which addresses STM32 MCU, and also provides support for Cortex-M inside STM32 MPU.

STM32 MPU support, inside STM32CubeIDE, is available on Linux^® and Windows^® host PCs, but it is NOT on macOS^®.

	STM32CubeIDE for Linux® host PC	STM32CubeIDE for Windows® host PC
Download	Version 1.15.0 Download the preferred all-in-one Linux installer from st.com Generic Linux Installer - STM32CubeIDE-Lnx RPM Linux Installer - STM32CubeIDE-RPM Debian Linux Installer - STM32CubeIDE-DEB	Version 1.15.0 Download the all-in-one Windows installer from st.com Windows Installer - STM32CubeIDE-Win
Installation guide	Refer to STM32CubeIDE installation guide (UM2563) available on st.com.
User manual	When the installation is completed, see additional information about STM32CubeIDE in st.com: STM32CubeIDE quick start guide (UM2553)
Detailed release note	Details about the content of this tool version are available in the STM32CubeIDE release v1.15.0 release note from st.com

Minor releases may be available from the update site. Check chapter 10 in (UM2609) for more information on how to update STM32CubeIDE.

6.2. Installing the STM32CubeMPU Package

Optional step: it is mandatory only if you want to modify the STM32CubeMPU Package.

Prerequisite: the STM32CubeIDE is installed.

For STM32MP1 series:

• The STM32CubeMP1 Package is delivered through an archive file named unknown revision.

• Download and install the STM32CubeMP1 Package

The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA0048). The detailed content licenses can be found here..

	STM32MP1 Developer Package STM32CubeMP1 Package - v5.1.0 release
Download	Go on st.com to download the unknown revision file.
Installation	Go to the host PC directory in which you want to install the Developer Package (<Developer Package installation directory>); if you follow the proposition to organize the working directory, it means: cd <working directory path>/Developer-Package Download the archive file in this directory Uncompress the archive file to get the STM32CubeMP1 Package: unzip unknown revision
Release note	Details about the content of the STM32CubeMP1 Package are available in the STM32Cube_FW_MP1_V1.6.0/Release_Notes.html file. If you are interested in older releases, please have a look into the section Archives.

• The STM32CubeMP1 Package installation directory is in the <Developer Package installation directory> directory, and is named STM32Cube_FW_MP1_V1.6.0:

unknown revision			STM32CubeMP1 Package: details in STM32CubeMP15 Package content article
├── Drivers
│   ├── BSP				BSP drivers for the supported STM32MP1 boards
│   │   └── [...]
│   ├── CMSIS
│   │   └── [...]
│   └── STM32MP1xx_HAL_Driver		HAL drivers for the supported STM32MP1 devices
│       └── [...]
├── _htmresc
│   └── [...]
├── License.md
├── Middlewares
│   └── [...]
├── package.xml
├── Projects
│   ├── STM32CubeProjectsList.html	List of examples and applications for STM32CubeMP1 Package
│   ├── STM32MP157C-DK2			Set of examples and applications → STM32MP15 Discovery kits
│   │   └── [...]
│   └── STM32MP157C-EV1			Set of examples and applications → STM32MP15 Evaluation boards
│       └── [...]
├── Readme.md
├── Release_Notes.html			Release note for STM32CubeMP1 Package
└── Utilities
    └── [...]

For STM32MP25x lines :

• The STM32CubeMP2 Package is delivered through an archive file named en.stm32cubemp2-v0-3-0.zip.

• Download and install the STM32CubeMP2 Package

The software package is provided AS IS, and by downloading it, you agree to be bound to the terms of the software license agreement (SLA0048). The detailed content licenses can be found here.

	STM32MP2 Developer Package STM32CubeMP2 Package - v5.0.2.BETA release
Download	If you didn't retrieve yet the file en.stm32cubemp2-v0-3-0.zip, download it via this link. Rename the downloaded "STM32CubeMP2-main.zip" archive file in en.stm32cubemp2-v0-3-0.zip.
Installation	Go to the host PC directory in which you want to install the Developer Package (<Developer Package installation directory>); if you follow the proposition to organize the working directory, it means: cd <working directory path>/Developer-Package Download the archive file in this directory Uncompress the archive file to get the STM32CubeMP2 Package: unzip en.stm32cubemp2-v0-3-0.zip
Release note	Details about the content of the STM32CubeMP2Package are available in the STM32CubeMP2/Release_Notes.html file. If you are interested in older releases, please have a look into the section Archives.

• The STM32CubeMP2 Package installation directory is in the <Developer Package installation directory> directory, and is named STM32CubeMP2-main:

STM32CubeMP2-main			STM32CubeMP2 Package: details in STM32CubeMP2 Package content article
├── Drivers
│   ├── BSP				BSP drivers for the supported STM32MP2 boards
│   │   └── [...]
│   ├── CMSIS
│   │   └── [...]
│   └── STM32MP2xx_HAL_Driver		HAL drivers for the supported STM32MP2 devices
│       └── [...]
├── _htmresc
│   └── [...]
├── License.md
├── Middlewares
│   └── [...]
├── package.xml
├── Projects
│   ├── STM32CubeProjectsList.html	List of examples and applications for STM32CubeMP2 Package
│   └── STM32MP257F-EV1			Set of examples and applications → STM32MP25 Evaluation boards
│       └── [...]
├── Readme.md
├── Release_Notes.html			Release note for STM32CubeMP2 Package
└── Utilities
    └── [...]

The STM32CubeMPU Package is now installed: let's develop software running on Arm Cortex-M.

7. Developing software running on Arm Cortex-A

7.1. Modifying the Linux kernel

Prerequisites:

• the SDK is installed
• the SDK is started up
• the BSP package is installed

The <Linux kernel installation directory>/README.HOW_TO.txt helper file gives the commands to:
☐ configure the Linux kernel
☐ cross-compile the Linux kernel
☐ deploy the Linux kernel (that is, update the software on board)

You can refer to the following simple examples:

• Modification of the kernel configuration
• Modification of the device tree
• Modification of a built-in device driver
• Modification of an external in-tree module
• Adding an external out-of-tree Linux kernel module

7.2. Adding Linux user space applications

Prerequisites:

• the SDK is installed
• the SDK is started up

Once a suitable cross-toolchain (OpenSTLinux SDK) is installed, it is easy to develop a project outside of the OpenEmbedded build system.
There are different ways to use the SDK toolchain directly, among which Makefile and Autotools.
Whatever the method, it relies on:

• the sysroot that is associated with the cross-toolchain, and that contains the header files and libraries needed for generating binaries (see target sysroot)
• the environment variables created by the SDK environment setup script (see SDK startup)

You can refer to the following simple example:

• Addition of a "hello world" user space application

7.3. Modifying the U-Boot

Prerequisites:

• the SDK is installed
• the SDK is started up
• the BSP package is installed

The <U-Boot installation directory>/README.HOW_TO.txt helper file gives the commands to:
☐ cross-compile the U-Boot
☐ deploy the U-Boot (that is, update the software on board)

You can refer to the following simple example:

• Modification of the U-Boot

7.4. Modifying the TF-A

Prerequisites:

• the SDK is installed
• the SDK is started up
• the BSP package is installed

The <TF-A installation directory>/README.HOW_TO.txt helper file gives the commands to:
☐ cross-compile the TF-A
☐ deploy the TF-A (that is, update the software on board)

You can refer to the following simple example:

• Modification of the TF-A

7.5. Modifying the OP-TEE

Prerequisites:

• the SDK is installed
• the SDK is started up
• the BSP package is installed

The <OP-TEE installation directory>/README.HOW_TO.txt helper file gives the commands to:
☐ cross-compile the OP-TEE
☐ deploy the OP-TEE (that is, update the software on board)

You can refer to the following simple example:

• Modification of the OP-TEE OS

8. Developing software running on Arm Cortex-M

Following chapters are valid only on STM32MP15x lines  and STM32MP25x lines .

8.1. How to create a STM32CubeMPU project from scratch or open/modify an existing one from STM32CubeMPU package

Refer to:

• STM32CubeMP15 Package for STM32MP15x lines 
• STM32CubeMP2 Package for STM32MP25x lines 

9. Fast links to essential commands

If you are already familiar with the Developer Package for the STM32MPU Embedded Software distribution, fast links to the essential commands are listed below.

Information

With the links below, you will be redirected to other article; use the back button of your browser to come back to these fast links

Link to the command
Starter Packages
Essential commands of the STM32MP25 Evaluation board Starter Package
Essential commands of the STM32MP15 Evaluation board Starter Package
Essential commands of the STM32MP15 Discovery kit Starter Package
Essential commands of the STM32MP13 Discovery kit Starter Package
SDK
Download and install the latest SDK for STM32MP1 series
Download and install the latest SDK for STM32MP2 series
Start the SDK
Linux kernel
Download and install the latest Linux kernel
Helper file for the Linux kernel build, and update on board
gcnano-driver
Download and install the latest gcnano-driver
Helper file for the gcnano-driver build, and update on board
U-Boot
Download and install the latest U-Boot
Helper file for the U-Boot build, and update on board
TF-A
Download and install the latest TF-A
Helper file for the TF-A build, and update on board
OP-TEE
Download and install the latest OP-TEE
Helper file for the OP-TEE build, and update on board
Linux user space
Simple user space application
STM32CubeMPU Package only for STM32MP15x lines  and STM32MP25x lines
Download and install the latest STM32CubeMP1 Package
Create or modify a STM32CubeMP1 project
Download and install the latest STM32CubeMP2 Package
Create or modify a STM32CubeMP2 project

10. How to go further?

Now that your developments are ready, you might want to switch to the STM32MPU Distribution Package, in order to create your own distribution and to generate your own SDK and image.