readme.rst

STM32U5

TF-M is supported on STM32U5 family

https://www.st.com/en/microcontrollers-microprocessors/stm32u5-series.html

Directory content

• stm/common/stm32u5xx/stm32u5xx_hal:

  Content from https://github.com/STMicroelectronics/stm32u5xx_hal_driver.git

• stm/common/stm32u5xx/Device:

  Content from https://github.com/STMicroelectronics/cmsis_device_u5.git

• stm/common/stm32u5xx/bl2:

  stm32l5xx bl2 code specific from https://github.com/STMicroelectronics/STM32CubeU5.git (Projects/B-U585I-IOT02A/Applications/TFM)

• stm/common/stm32u5xx/secure:

  stm32l5xx Secure porting adaptation from https://github.com/STMicroelectronics/STM32CubeU5.git (Projects/B-U585I-IOT02A/Applications/TFM)

• stm/common/stm32u5xx/boards:

  Adaptation for stm32 board using stm32l5xx soc from https://github.com/STMicroelectronics/STM32CubeU5.git (Projects/B-U585I-IOT02A/Applications/TFM)

Specific Software Requirements

STM32_Programmer_CLI is required.(see https://www.st.com/en/development-tools/stm32cubeprog.html)

Write software on target

In secure build folder directory api_ns:

• postbuild.sh: Updates regression.sh and TFM_UPDATE.sh scripts according to flash_layout.h
• regression.sh: Sets platform option bytes config and erase platform
• TFM_UPDATE.sh: Writes bl2, secure, and non secure image in target

Connect board to USB and Execute the 3 scripts in following order to update platform: postbuild.sh, regression.sh, TFM_UPDATE.sh

The virtual com port from STLINK is used for TFM log and serial port configuration should be:

• Baud rate = 115200
• Data = 8 bits
• Parity = none
• Stop = 1 bit
• Flow control = none

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Copyright (c) 2021 STMicroelectronics. All rights reserved. SPDX-License-Identifier: BSD-3-Clause