Difference between revisions of "STM32MP15 distribution for Android release note"

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This article describes the content of STM32MPU distribution for Android software release version st-android-9.0.0-2019-09-27 (tag), which is part of STM32MP15 ecosystem release note - v1.1.0.

1 Intended audience[edit]

The targeted audience is STM32MP15 customers or partners.

2 Delivery scope and purpose[edit]

The STM32MPU distribution for Android provides all necessary components for running, developing and/or making your own platform based on Android framework. It runs on the Arm® Cortex®-A7 processors, and is a fundamental part of the STM32MPU Embedded Software distribution for Android.

It is compatible with Android 9.0.0 (Pie).

It is provided as example. The Android certifications are not insured.


This delivery of STM32MP15 distribution for Android™ v1.0.0 is part of STM32MP15-Ecosystem-v1.1.0 (see the STM32MP15 ecosystem release note - v1.1.0).

3 Licensing[edit]

This software package is licensed under a SOFTWARE LICENSE AGREEMENT (SLA). Customers may not use this package except in compliance with the software license agreement (SLA).

All of the packages use the same source components. All components and their respective licenses are listed here.

4 Supported hardware[edit]

This software delivery is compatible with the following boards:

5 Delivered features[edit]

5.1 Main software components[edit]

  • Android version v9.0.0 (AOSP android-9.0.0_r46 tag)
  • Kernel version v4.19.49 (AOSP common kernel) + updates for STM32MP1 and associated boards (waiting upstream finalization)
  • TF-A version v2.0 + updates for STM32MP1 and associated boards (waiting upstream finalization)
  • U-Boot version v2018.11 + updates for STM32MP1 and associated boards (waiting upstream finalization)
  • OP-TEE version v3.3.0 + updates for STM32MP1 and associated boards (waiting upstream finalization)
  • STM32CubeMP1 FW v1.1.0
  • GCC version v8.2
  • openOCD version v0.10.0
  • GCnano version v6.2.4

5.2 Detailed features[edit]

5.2.1 BSP features[edit]

The STM32MP15 distribution for Android™ v1.0.0 is based on the OpenSTLinux BSP v1.1.0 described in the following chapters:

5.2.2 Android features[edit]

Domain Feature STM32MP15
Evaluation board
Comment
Boot Fastboot Yes Entering this mode through connect ST-Link console (uart) or by HW control
Verified boot No
A/B mechanism No A/B images available but boot on A by default
Recovery No
Multimedia Audio speaker Yes audio speaker output can be used only to connect headset
Audio headset Yes not selected by default (no headset detection)
Audio built-in digital micro Yes limited to one microphone (mono)
Audio USB No
Camera Yes
Camera USB No
Video SW decode Yes 480p30 max. without audio
Security SELinux Yes
Runtime verification No
Disk encryption No
Trusted environment Yes OP-TEE
Keystore No only software backup used
Gatekeeper No
Network and connectivity Ethernet Yes
Wifi Yes Using TP-LINK dongle (TL-WN722N) for test purpose
Wifi hotspot No
BT / BLE No
USB Yes Mass storage / MTP / PTP
Systems Boot control Partially Available but not enable
Power control Yes
Thermal control Yes Only one temperature managed for CPU/GPU (others are stubbed)
Update engine No
Sensors Accelerometer No
Gyroscope No
Magnetometer No
Proximity No
Pressure No
Temperature No
Hub No
Debug ADB (USB) Yes
ADB (Ethernet) Yes
ADEB Yes Only for SELinux trace
Perfetto Yes Several limitations with Android 9.0.0
SYSTRACE Yes
Metrics No
Storage USB Key Yes
microSD card Yes
eMMC Yes
Others Lights Yes
Touchscreen Yes

6 Recommendations for use[edit]

6.1 Safe use[edit]

  • Flash-load and boot from all supported Flash devices: SDCard and eMMC Flash memories
  • Develop Android™ applications, libraries, kernel modules...
  • Prototype applications based on ST boards
  • Develop your own board based on STM32MP15x

6.2 Non-recommended use[edit]

  • None

7 Main restrictions list[edit]

7.1 BSP restrictions list[edit]

  • CubeMX configuration panels propose some internal peripheral modes not supported by TF-A or OP-TEE drivers running in Cortex-A7 secure context.
  • The following table lists all known restrictions.
IP Information/Restriction usage in Cortex-A7 secure context
I2C4/I2C6 The SMBus-two-wire-Interface mode proposed is not supported for Cortex-A7 secure context (TF-A , OP-TEE) as no use case foreseen
PWR TF-A and OP-TEE implementation do not support wake-up events for secure IPs assigned to Cortex-A7 secure context
RCC The master clock output1 et 2, Audio clock input modes proposed are not applicable for Cortex-A7 secure context (TF-A, OP-TEE)
SPI6 The SPI SW driver is not available in OP-TEE implementation for Cortex-A7 secure context
TAMP OP-TEE implementation does not support TAMP_IN inputs and TAMP_OUT outputs in Cortex-A7 secure context
USART1 OP-TEE implementation does not support USART synchronous mode in Cortex-A7 secure context

7.2 Android restrictions list[edit]

STM32P15 distribution for Android™ is provided as example.

In this context:

  • Android 9.0.0 with Linux Kernel 4.19 is not an association officially supported by the frameworks (several limitations to be expected)
  • Compliance tests (VTS/CTS) are not insured (but they are executed and treated as much as possible)
  • Security HAL (Keystore, Gatekeeper, Oemlock) are not available (removed from manifest) or stubbed
  • Verified Boot and A/B boot mechanism not available (or partially)

Available on STM32MP15 Evaluation Board but not integrated in STM32P15 distribution for Android™:

  • Audio headset detection is not available (need to force the usage)
  • Audio RCA is not available (SPDIF input / SPDIF output)
  • Audio digital microphone is limited to mono (record usage)
  • Joystick is not available

8 Minor release updates[edit]

STMicroelectronics can delivers corrections on purpose through github® components.

9 How to get started with st-android-9.0.0-2019-09-27[edit]

Refer to How to get the software and start with this release.

10 Associated tools[edit]

Refer to the Referenced tools release notes .

11 Demo applications[edit]

The STM32MP15 distribution for Android™ is delivered with several applications provided as example.

11.1 STCopro M4Echo application[edit]

Example of application using the proprietary coprocessor service (allow direct interaction with the firmware started on the embedded Arm® Cortex®M4).

The firmware just returns the received character on the opened serial port.

The associated application project is available on github® (compatible with Android Studio IDE): STCoproM4Echo application.

11.2 STCopro M4Example application[edit]

Example of application using the proprietary coprocessor service (allow direct interaction with the firmware started on the embedded Arm® Cortex®M4).

The firmware generates a signal on the DAC and get back a signal from the ADC. A wire can be added to loop the DAC on ADC. The firmware shows also a simple usage of several blocks available on Arm® Cortex®M4 side.

The associated application project is available on github® (compatible with Android Studio IDE): STCoproM4Example application.

The associated firmware project is available on github® (compatible with System Workbench IDE): STCoproM4Example firmware.

11.3 STCamera[edit]

Simple Camera application (preview) used to show a way to manage the built-in camera, only compatible with MB1379 camera extension board. An external storage configured as portable device shall be available to allow taking a picture.

11.4 STVideo[edit]

Simple Video application used to show a way to play a video. The video files shall be stored in the directory Movies of an external storage (ex: USB key) configured as portable device.

11.5 STPerf[edit]

Performance overlay application used to show in foreground the device performances (CPU usage, GPU usage, frame rate). The settings and stop commands are available on notifications system interface.

12 Change log / Main changes[edit]

Initial version.

13 Detailed delivery content[edit]

13.1 Detailed description of STMicroelectronics modules[edit]

13.1.1 BSP modules[edit]

Module name Path of module Description
stm32mp1-bootloader device/stm/
stm32mp1-bootloader
Primary (Trusted Firmware-A) and secondary (Universal Boot Loader for embedded devices) bootloaders for STM32MP
Name Version License
tf-a-stm32mp1 2.0 BSD-3-Clause
Name Version License
u-boot-stm32mp1 2018.11 GPLv2+
STM32MPU distribution for Android licenses - v1.0.0
STM32MPU distribution for Android licenses - v1.0.0
stm32mp1-kernel device/stm/
stm32mp1-kernel
Linux STM32MP Kernel
Name Version License
linux-stm32mp1 4.19 GPLv2
STM32MPU distribution for Android licenses - v1.0.0
stm32mp1-tee device/stm/
stm32mp1-tee
OPTEE OS for STM32MP
Name Version License
optee_os-stm32mp1 3.3.0 BSD-2-Clause & BSD-3-Clause
STM32MPU distribution for Android licenses - v1.0.0
stm32mp1-openocd device/stm/
stm32mp1-openocd
Free and Open On-Chip Debugging, In-System Programming and Boundary-Scan Testing
Name Version License
stm32mp1-openocd 0.10.0 GPLv2

13.1.2 Common and peripherals modules[edit]

Module name Path of module Description
stm32mp1 device/stm/
stm32mp1
Configuration of the STM32MP1 distribution for Android
Name Version License
stm32mp1 NA Apache v2.0
allocator device/stm/stm32mp1/
peripheral/allocator
STMicroelectronics allocator HAL public header files useful for composer
Name Version License
allocator NA Apache v2.0
audio device/stm/stm32mp1/
peripheral/audio
STMicroelectronics Audio HAL source code
Name Version License
audio NA Apache v2.0
bootctrl device/stm/stm32mp1/
peripheral/bootctrl
STMicroelectronics Boot Control HAL source code and the dedicated misc partition image generator
Name Version License
bootctrl NA Apache v2.0
camera device/stm/stm32mp1/
peripheral/camera
STMicroelectronics Camera HAL source code
Name Version License
camera NA Apache v2.0
composer device/stm/stm32mp1/
peripheral/composer
STMicroelectronics composer HAL source code
Name Version License
composer NA Apache v2.0
copro device/stm/stm32mp1/
peripheral/copro
STMicroelectronics Copro HAL source code
Name Version License
copro NA Apache v2.0
health device/stm/stm32mp1/
peripheral/health
STMicroelectronics Health hardware service source code
Name Version License
health NA Apache v2.0
lights device/stm/stm32mp1/
peripheral/lights
STMicroelectronics Lights HAL source code
Name Version License
lights NA Apache v2.0
memtrack device/stm/stm32mp1/
peripheral/memtrack
STMicroelectronics Memtrack HAL source code
Name Version License
memtrack NA Apache v2.0
oemlock device/stm/stm32mp1/
peripheral/oemlock
STMicroelectronics OemLock HAL source code (stub version)
Name Version License
oemlock NA Apache v2.0
thermal device/stm/stm32mp1/
peripheral/thermal
STMicroelectronics Thermal hardware service source code
Name Version License
thermal NA Apache v2.0
usb device/stm/stm32mp1/
peripheral/usb
STMicroelectronics Usb hardware service source code
Name Version License
usb NA Apache v2.0
wifi device/stm/stm32mp1/
peripheral/wifi
STMicroelectronics libwifi HAL source code
Name Version License
wifi NA Apache v2.0

13.1.3 Board modules[edit]

Module name Path of module Description
eval device/stm/stm32mp1/
eval
STMicroelectronics configuration for Android used to generate images adapted to the STM32MP15 Evaluation boards
Name Version License
eval NA Apache v2.0

13.1.4 Coprocessor service module[edit]

Module name Path of module Description
CoproService packages/apps/
CoproService
STMicroelectronics coprocessor service
Name Version License
CoproService NA Apache v2.0

13.1.5 ST application modules[edit]

Module name Path of module Description
app vendor/stm/app STMicroelectronics applications associated if required to their respective coprocessor firmware
Name Version License
app NA Apache v2.0


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