#HOW TO EXECUTE DTB FIRMWARE HOW TO#
#HOW TO EXECUTE DTB FIRMWARE UPDATE#
#HOW TO EXECUTE DTB FIRMWARE PATCH#
#HOW TO EXECUTE DTB FIRMWARE SOFTWARE#

PC $> pushd $WORKDIR/kernel/kernel-sources PC $> make ARCH=arm O='$PWD/./build' multi_v7_defconfig fragment*.config PC $> for f in `ls -1.

#HOW TO EXECUTE DTB FIRMWARE PATCH#

/sources/arm-ostl-linux-gnueabi/linux-stm32mp-*/*.patch) do patch -p1 popd PC $> popd 5.2 KernelВ : copy the DTS into the source code PC $> pushd $WORKDIR PC $> cp -r MyDeviceTree_fromCubeMX/kernel/* kernel/kernel-sources/arch/arm/boot/dts/ PC $> popd 5.3 KernelВ : regenerate the kernel DTB Information PC $> pushd $WORKDIR PC $> mkdir -p kernel PC $> tar xf sources/arm-ostl-linux-gnueabi/linux-stm32mp-*/linux-*.tar.xz -C kernel PC $> mv kernel/linux-* kernel/kernel-sources/ PC $> pushd kernel/kernel-sources/ PC $> for p in $(ls -1. Please notice a grep '$>' README.HOW_TO.txt describes the few commands needed to build the artifact of kernel The procedure below is an extract of the README.HOW_TO.txt file which is available in $WORKDIR/sources/arm-ostl-linux-gnueabi/linux-stm32mp-*. The following chapters describe the procedure to generate and copy the new DTB into the target.ДҐ.1 KernelВ : unpack and patch sources Information The path used must be something like '/boot/.dtb'.

#HOW TO EXECUTE DTB FIRMWARE UPDATE#

Since 'nf' explicitly points to the DTB, just update the kernel device tree by replacing the DTB file of the '/boot' partition. The commands described in the rest of the document must be run in an SDK environment context: ( Starting_up_the_SDK).ДҐ Updating the kernel device tree PC $> cd $HOME PC $> mkdir WORKDIR PC $> cd WORKDIR PC $> export WORKDIR='$PWD' PC $> tar -strip-components=1 -xf -C $WORKDIR/ PC $> tar -strip-components=1 -xf -C $WORKDIR/ PC $> tar -strip-components=1 -xf -C $WORKDIR/ PC $> tar xf -C $WORKDIR/ It is recommended to organize the numerous inputs described in #Prerequisites in your environment.ДЇirst create a dedicated WORKDIR under your HOME folder and copy there all the inputs listed in #Prerequisites:

Make sure the hardware configuration described in PC_prerequisites#Linux PC has been executed (even with a WSL2 setup).

| |- stm32mp157f-mydevicetree-mx-u-boot.dtsi | |- stm32mp157f-mydevicetree-mx-fw-config.dts

In the rest of this document, we assume that the custom device tree is generated by STM32CubeMX and stored in a MyDeviceTree_ tarball with following file tree:.

the STM32CubeProgrammer, which is the tool used to flash the images and binaries into the target.

the SDK toolchain, provided within the en.

the component sources and patches, provided within the en. file (download it from st.com).

the flashlayout as well as the images to flash, provided within the en. file (download it from st.com).

#HOW TO EXECUTE DTB FIRMWARE SOFTWARE#

The material required to update the above software components is the following:

the swapping of some internal peripherals from Cortex В®-M side to Cortex-A side (or the opposite)Д®ven if STMicroelectronics strongly recommends to use a Linux В® environment, the steps described in this article can be executed in a WSL2 (Windows Sub-system Linux 2) environment.Д¬ompiling a new device tree means updating three software components belonging to the complete boot chain (trusted mode), Trusted Firmware A ( TF-A), u-boot, and Linux kernel.

the description of a new and private board.

There are various rationale for using a custom device tree, such as:

#HOW TO EXECUTE DTB FIRMWARE HOW TO#

This article describes how to update the device tree compiled ( DTB) part of the boot binaries. In particular, STM32CubeMX can generate a 'custom' device tree. This article explains how to update the boot chain (trusted mode) for a 'custom' device tree. 6.2.4 U-bootВ : copy the u-boot into the target.6.2.3 U-bootВ : regenerate fip image within new u-boot.6.2.2 U-bootВ : copy the DTS in the u-boot source code.6.2.1 U-bootВ : unpack and patch sources.6.1.2 TF-AВ : copy the DTS into the source code.5.2 KernelВ : copy the DTS into the source code.

How to execute dtb firmware