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This is a page about ST's STM32MP1 series of Cortex-A7 based Development Kits.

Availability

Boards:
Discovery kit with STM32MP157A MPU at Digi-Key
Discovery kit with STM32MP157C MPU at Digi-Key
Evaluation board with STM32MP157A MPU at Digi-Key
Evaluation board with STM32MP157C MPU at Digi-Key

Vendor Documentation

Basic Requirements

ARM Cross Compiler: GCC

This is a pre-built (64bit) version of Linaro GCC that runs on generic linux, sorry (32bit) x86 users, it's time to upgrade...
Download/Extract:

user@localhost:~$
wget -c https://releases.linaro.org/components/toolchain/binaries/6.5-2018.12/arm-linux-gnueabihf/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
tar xf gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
export CC=`pwd`/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-

Test Cross Compiler:

user@localhost:~$
${CC}gcc --version
Test Output:
arm-linux-gnueabihf-gcc (Linaro GCC 6.5-2018.12) 6.5.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Bootloader: U-Boot

Das U-Boot – the Universal Boot Loader: http://www.denx.de/wiki/U-Boot
Download:

user@localhost:~$
git clone https://github.com/u-boot/u-boot
cd u-boot/
git checkout v2019.10-rc1 -b tmp

Configure and Build:
stm32mp157c-ev1

user@localhost:~/u-boot$
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} stm32mp15_basic_defconfig
make ARCH=arm CROSS_COMPILE=${CC} DEVICE_TREE=stm32mp157c-ev1 all

stm32mp157c-ed1

user@localhost:~/u-boot$
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} stm32mp15_basic_defconfig
make ARCH=arm CROSS_COMPILE=${CC} DEVICE_TREE=stm32mp157c-ed1 all

stm32mp157a-dk1

user@localhost:~/u-boot$
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} stm32mp15_basic_defconfig
make ARCH=arm CROSS_COMPILE=${CC} DEVICE_TREE=stm32mp157a-dk1 all

stm32mp157c-dk2

user@localhost:~/u-boot$
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} stm32mp15_basic_defconfig
make ARCH=arm CROSS_COMPILE=${CC} DEVICE_TREE=stm32mp157c-dk2 all

Linux Kernel

This script will build the kernel, modules, device tree binaries and copy them to the deploy directory.
Download:

user@localhost:~$
git clone https://github.com/RobertCNelson/armv7-lpae-multiplatform
cd armv7-lpae-multiplatform/

For v5.3.x (Prepatch):

user@localhost:~/armv7-lpae-multiplatform$
git checkout origin/v5.3.x -b tmp

Build:

user@localhost:~/armv7-lpae-multiplatform$
./build_kernel.sh

Root File System

Debian 9

User

Password

debian

temppwd

root

root

Download:

user@localhost:~$
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/debian-9.9-minimal-armhf-2019-04-27.tar.xz

Verify:

user@localhost:~$
sha256sum debian-9.9-minimal-armhf-2019-04-27.tar.xz
sha256sum output:
4fe3d6d3854f3918d235e9848c406d2ba044316438470cf356dd3a69bc8bbd10  debian-9.9-minimal-armhf-2019-04-27.tar.xz

Extract:

user@localhost:~$
tar xf debian-9.9-minimal-armhf-2019-04-27.tar.xz

Ubuntu 18.04 LTS

User

Password

ubuntu

temppwd

Download:

user@localhost:~$
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/ubuntu-18.04.2-minimal-armhf-2019-04-27.tar.xz

Verify:

user@localhost:~$
sha256sum ubuntu-18.04.2-minimal-armhf-2019-04-27.tar.xz
sha256sum output:
a5f3bce78f4d332c533012fedd6e3b949d43407fbc178c8a34eeb85d57e65d70  ubuntu-18.04.2-minimal-armhf-2019-04-27.tar.xz

Extract:

user@localhost:~$
tar xf ubuntu-18.04.2-minimal-armhf-2019-04-27.tar.xz

Setup microSD card

We need to access the External Drive to be utilized by the target device. Run lsblk to help figure out what linux device has been reserved for your External Drive.

Example: for DISK=/dev/sdX
lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 465.8G  0 disk
├─sda1   8:1    0   512M  0 part /boot/efi
└─sda2   8:2    0 465.3G  0 part /                <- Development Machine Root Partition
sdb      8:16   1   962M  0 disk                  <- microSD/USB Storage Device
└─sdb1   8:17   1   961M  0 part                  <- microSD/USB Storage Partition
Thus you would use:
export DISK=/dev/sdb
Example: for DISK=/dev/mmcblkX
lsblk
NAME      MAJ:MIN   RM   SIZE RO TYPE MOUNTPOINT
sda         8:0      0 465.8G  0 disk
├─sda1      8:1      0   512M  0 part /boot/efi
└─sda2      8:2      0 465.3G  0 part /                <- Development Machine Root Partition
mmcblk0     179:0    0   962M  0 disk                  <- microSD/USB Storage Device
└─mmcblk0p1 179:1    0   961M  0 part                  <- microSD/USB Storage Partition
Thus you would use:
export DISK=/dev/mmcblk0

Erase partition table/labels on microSD card:

sudo dd if=/dev/zero of=${DISK} bs=1M count=10

Create Partition Layout:

{code:title=Check the version of sgdisk installed on your pc}
sudo sgdisk --version
Example Output
GPT fdisk (sgdisk) version 1.0.3
Clear Previous Formatting
sudo sgdisk -o ${DISK}
sgdisk
sudo sgdisk --resize-table=128 -a 1 \
        -n 1:34:545    -c 1:fsbl1   \
        -n 2:546:1057  -c 2:fsbl2   \
        -n 3:1058:5153 -c 3:ssbl    \
        -n 4:5154:     -c 4:rootfs  \
        -p ${DISK}
Set legacy BIOS partition
sudo sgdisk -A 4:set:2 ${DISK}

Install Bootloader:

user@localhost:~$
for: DISK=/dev/mmcblk0
sudo dd if=./u-boot/u-boot-spl.stm32 of=${DISK}p1
sudo dd if=./u-boot/u-boot-spl.stm32 of=${DISK}p2
sudo dd if=./u-boot/u-boot.img of=${DISK}p3
 
for: DISK=/dev/sdX
sudo dd if=./u-boot/u-boot-spl.stm32 of=${DISK}1
sudo dd if=./u-boot/u-boot-spl.stm32 of=${DISK}2
sudo dd if=./u-boot/u-boot.img of=${DISK}3

Format Partition:
With mkfs.ext4 1.43, we need to make sure metadata_csum and 64bit ext4 features are disabled.

U-Boot 2019.10
Unsupported feature metadata_csum found, not writing.
 
** Unable to write /uboot.env from mmc0:4 **
mkfs.ext4 >= 1.43
for: DISK=/dev/mmcblk0
sudo mkfs.ext4 -L rootfs -O ^metadata_csum,^64bit ${DISK}p4
 
for: DISK=/dev/sdX
sudo mkfs.ext4 -L rootfs -O ^metadata_csum,^64bit ${DISK}4
mkfs.ext4 <= 1.42
for: DISK=/dev/mmcblkX
sudo mkfs.ext4 -L rootfs ${DISK}p4
 
for: DISK=/dev/sdX
sudo mkfs.ext4 -L rootfs ${DISK}4

Mount Partition:
On most systems these partitions may will be auto-mounted...

sudo mkdir -p /media/rootfs/
 
for: DISK=/dev/mmcblkX
sudo mount ${DISK}p4 /media/rootfs/
 
for: DISK=/dev/sdX
sudo mount ${DISK}4 /media/rootfs/

Install Kernel and Root File System

To help new users, since the kernel version can change on a daily basis. The kernel building scripts listed on this page will now give you a hint of what kernel version was built.

-----------------------------
Script Complete
eewiki.net: [user@localhost:~$ export kernel_version=4.X.Y-Z]
-----------------------------

Copy and paste that "export kernel_version=4.X.Y-Z" exactly as shown in your own build/desktop environment and hit enter to create an environment variable to be used later.

export kernel_version=4.X.Y-Z

Copy Root File System

user@localhost:~$
sudo tar xfvp ./*-*-*-armhf-*/armhf-rootfs-*.tar -C /media/rootfs/
sync
sudo chown root:root /media/rootfs/
sudo chmod 755 /media/rootfs/

Setup extlinux.conf

user@localhost:~$
sudo mkdir -p /media/rootfs/boot/extlinux/
sudo sh -c "echo 'label Linux ${kernel_version}' > /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    kernel /boot/vmlinuz-${kernel_version}' >> /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    append console=ttySTM0,115200 root=/dev/mmcblk0p4 ro rootfstype=ext4 rootwait quiet' >> /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    fdtdir /boot/dtbs/${kernel_version}/' >> /media/rootfs/boot/extlinux/extlinux.conf"
sudo sh -c "echo '    devicetree /boot/dtbs/${kernel_version}/stm32mp157c-dk2.dtb' >> /media/rootfs/boot/extlinux/extlinux.conf"

Copy Kernel Image

Kernel Image:

user@localhost:~$
sudo cp -v ./armv7-lpae-multiplatform/deploy/${kernel_version}.zImage /media/rootfs/boot/vmlinuz-${kernel_version}

Copy Kernel Device Tree Binaries

user@localhost:~$
sudo mkdir -p /media/rootfs/boot/dtbs/${kernel_version}/
sudo tar xfv ./armv7-lpae-multiplatform/deploy/${kernel_version}-dtbs.tar.gz -C /media/rootfs/boot/dtbs/${kernel_version}/

Copy Kernel Modules

user@localhost:~$
sudo tar xfv ./armv7-lpae-multiplatform/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/

File Systems Table (/etc/fstab)

sudo sh -c "echo '/dev/mmcblk0p4  /  auto  errors=remount-ro  0  1' >> /media/rootfs/etc/fstab"

Remove microSD/SD card

sync
sudo umount /media/rootfs

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