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+STM32 MPUs
+==========
+
+STM32 MPUs are microprocessors designed by STMicroelectronics
+based on Arm Cortex-A. This page presents the common configuration of STM32
+MPUs, more details and dedicated configuration can be found in each STM32 MPU
+page (:ref:`STM32MP1` or :ref:`STM32MP2`)
+
+Design
+------
+The STM32 MPU resets in the ROM code of the Cortex-A.
+The primary boot core (core 0) executes the boot sequence while
+secondary boot core (core 1) is kept in a holding pen loop.
+The ROM code boot sequence loads the TF-A binary image from boot device
+to embedded SRAM.
+
+The TF-A image must be properly formatted with a STM32 header structure
+for ROM code is able to load this image.
+Tool stm32image can be used to prepend this header to the generated TF-A binary.
+
+Boot
+~~~~
+Only BL2 (with STM32 header) is loaded by ROM code. The other binaries are
+inside the FIP binary: BL31 (for Aarch64 platforms), BL32 (OP-TEE), U-Boot
+and their respective device tree blobs.
+
+Boot sequence
+~~~~~~~~~~~~~
+
+ROM code -> BL2 (compiled with RESET_TO_BL2) -> OP-TEE -> BL33 (U-Boot)
+
+Build Instructions
+------------------
+Boot media(s) supported by BL2 must be specified in the build command.
+Available storage medias are:
+
+- ``STM32MP_SDMMC``
+- ``STM32MP_EMMC``
+- ``STM32MP_RAW_NAND``
+- ``STM32MP_SPI_NAND``
+- ``STM32MP_SPI_NOR``
+
+Serial boot devices:
+
+- ``STM32MP_UART_PROGRAMMER``
+- ``STM32MP_USB_PROGRAMMER``
+
+
+Other configuration flags:
+
+- | ``DTB_FILE_NAME``: to precise board device-tree blob to be used.
+  | Default: stm32mp157c-ev1.dtb
+- | ``DWL_BUFFER_BASE``: the 'serial boot' load address of FIP,
+  | default location (end of the first 128MB) is used when absent
+- | ``STM32MP_EARLY_CONSOLE``: to enable early traces before clock driver is setup.
+  | Default: 0 (disabled)
+- | ``STM32MP_RECONFIGURE_CONSOLE``: to re-configure crash console (especially after BL2).
+  | Default: 0 (disabled)
+- | ``STM32MP_UART_BAUDRATE``: to select UART baud rate.
+  | Default: 115200
+
+
+Populate SD-card
+----------------
+
+Boot with FIP
+~~~~~~~~~~~~~
+The SD-card has to be formatted with GPT.
+It should contain at least those partitions:
+
+- fsbl: to copy the tf-a-stm32mp157c-ev1.stm32 binary (BL2)
+- fip (GUID 19d5df83-11b0-457b-be2c-7559c13142a5): which contains the FIP binary
+
+Usually, two copies of fsbl are used (fsbl1 and fsbl2) instead of one partition fsbl.
+
+--------------
+
+*Copyright (c) 2023, STMicroelectronics - All Rights Reserved*