meta-stm32mp15x

Summary

meta-stm32mp15x is a yocto layer containing BSP support for the stm32mp15x based devices.

This layer relies on OpenEmbedded/Yocto build system and depends on:

[OECORE]
URI: https://git.yoctoproject.org/git/poky.git
layers: meta
branch: same dedicated branch as meta-stm32mp15x

and

[OE]
URI: https://github.com/openembedded/meta-openembedded.git
layers: meta-oe
branch: same dedicated branch as meta-stm32mp15x

Build

This layer can be integrated in your layers or built standalone using kas-tool:

KAS_MACHINE=stm32mp157f-dk2 kas build kas-stm32mp15x.yml

or using kas docker container:

KAS_MACHINE=stm32mp157f-dk2 kas-container build kas-stm32mp15x.yml

Flash SD Card

Flash image on a SD Card using bmap-tools:

sudo bmaptool copy \
    build/tmp/deploy/images/stm32mp157f-dk2/stm32mp15x-demo-image-stm32mp157f-dk2.wic.gz \
    /dev/mmcblk0

Run

Insert your SD Card into the compatible device and you should see in your serial console:

NOTICE:  CPU: STM32MP157FAC Rev.Z
NOTICE:  Model: STMicroelectronics STM32MP157F-DK2 Discovery Board
NOTICE:  Board: MB1272 Var4.0 Rev.C-03
NOTICE:  Bootrom authentication failed
NOTICE:  BL2: v2.8-stm32mp1-r1.1(release):v2.8-stm32mp-r1.1-3-g61924c04c-dirty(61924c04)
NOTICE:  BL2: Built : 13:07:51, Oct 18 2023
NOTICE:  TRUSTED_BOARD_BOOT support enabled
NOTICE:  ROTPK is not deployed on platform. Skipping ROTPK verification.
NOTICE:  ROTPK is not deployed on platform. Skipping ROTPK verification.
NOTICE:  BL2: Booting BL32
optee optee: OP-TEE: revision 3.19 (d0159bbf)


U-Boot 2022.10-stm32mp-r1.1 (Sep 18 2023 - 11:38:19 +0000)

CPU: STM32MP157FAC Rev.Z
Model: STMicroelectronics STM32MP157F-DK2 Discovery Board
Board: stm32mp1 in trusted mode (st,stm32mp157f-dk2)
Board: MB1272 Var4.0 Rev.C-03
DRAM:  512 MiB
optee optee: OP-TEE: revision 3.19 (d0159bbf)
Clocks:
- MPU : 800 MHz
- MCU : 208.878 MHz
- AXI : 266.500 MHz
- PER : 24 MHz
- DDR : 533 MHz
Core:  368 devices, 44 uclasses, devicetree: board
WDT:   Started watchdog with servicing (32s timeout)
NAND:  0 MiB
MMC:   STM32 SD/MMC: 0, STM32 SD/MMC: 1
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet@5800a000
Hit any key to stop autoboot:  0 
6975862 bytes read in 413 ms (16.1 MiB/s)
## Loading kernel from FIT Image at c8000000 ...
   Using 'conf-stm32mp157f-dk2.dtb' configuration
   Verifying Hash Integrity ... sha256,rsa2048:ubootfit+ OK
   Trying 'kernel-1' kernel subimage
     Description:  Linux kernel
     Created:      2023-10-02  11:43:32 UTC
     Type:         Kernel Image
     Compression:  uncompressed
     Data Start:   0xc8000108
     Data Size:    6886496 Bytes = 6.6 MiB
     Architecture: ARM
     OS:           Linux
     Load Address: 0xc2000000
     Entry Point:  0xc2000000
     Hash algo:    sha256
     Hash value:   b1fbe72d03c4c334ec5007167483684e61de35a5b843efc4d80a1d780a04a31b
   Verifying Hash Integrity ... sha256+ OK
## Loading fdt from FIT Image at c8000000 ...
   Using 'conf-stm32mp157f-dk2.dtb' configuration
   Verifying Hash Integrity ... sha256,rsa2048:ubootfit+ OK
   Trying 'fdt-stm32mp157f-dk2.dtb' fdt subimage
     Description:  Flattened Device Tree blob
     Created:      2023-10-02  11:43:32 UTC
     Type:         Flat Device Tree
     Compression:  uncompressed
     Data Start:   0xc8691678
     Data Size:    87138 Bytes = 85.1 KiB
     Architecture: ARM
     Load Address: 0xc4000000
     Hash algo:    sha256
     Hash value:   4acc0143bd2cc251ab55e9576e51b60ba9e5f767a734dac308aee309b7bf4d08
   Verifying Hash Integrity ... sha256+ OK
   Loading fdt from 0xc8691678 to 0xc4000000
   Booting using the fdt blob at 0xc4000000
   Loading Kernel Image
   Loading Device Tree to cffe7000, end cffff461 ... OK
Bootstage space exhasuted

Starting kernel ...


Poky (Yocto Project Reference Distro) 5.0 stm32mp157f-dk2 ttySTM0

stm32mp157f-dk2 login: root
root@stm32mp157f-dk2:~# 

Secure Boot:

Secure Boot Signing of tf-a an fip binaries is enabled by default using a development key

we recommend that you generate your own key using:

openssl ecparam -name prime256v1 -genkey -out /path/to/secure-boot-mykey.pem

Set the new Key path in a Bitbake Variable put in your local.conf:

SECBOOT_SIGN_KEY = "/path/to/secure-boot-mykey.pem"

The hashes of public key are automatically generated under:

build/tmp/deploy/images/stm32mp157f-dk2/secureboot-pubkey-hash.bin

The corresponding u-boot fuse prog commands are also generated and can be fused using:

build/tmp/deploy/images/stm32mp157f-dk2/u-boot-fuse-prog.txt

Note

We provide services to integrate HSM signing to secure boot, extend it to the applications and improve the overall security of your product.

Wireless LAN

to enable Wifi Manually you should set /etc/wpa_supplicant.conf file e.g:

network={
        ssid="embetrix-2.4"
        psk=315089e3db2ce18ad94caba8a3b71f35947487d1c7913a44130e7ec2f91905040
}

and start wpa_supplicant:

wpa_supplicant -c /etc/wpa_supplicant.conf -i wlan0 -B

you can then acquire an IP address using for example:

udhcpc -i wlan0

List of tested boards:

• stm32mp157c-dk2
• stm32mp157f-dk2

Contributing

If you want to contribute changes, you can send Github pull requests at: https://github.com/embetrix/meta-stm32mp15x/pulls

Maintainers

• Ayoub Zaki info@embetrix.com