.. include:: ../substitutions.rst

.. _BootingEssentials-62P:

Booting Essentials
==================

This section of the product wiki contains guides to update and boot from different boot sources on the phyFLEX-AM62Px SOM.

.. toctree::
   :maxdepth: 1

   sdcard.rst
   emmc.rst
   uart.rst
   copyingFilesToTheTarget.rst
   stdboot.rst
   configuringTheBootloader.rst


Boot Modes
----------

The boot device is selected with the 4-position boot switch S1 on the |product-cb|. Each position drives one of the SOM's BOOT_MODE1-4 signals (|soc-caps| BOOTMODE3-6) to 1 (1.8V) or 0 (GND). A position set to ON is 1, and a position set to OFF is 0. By default, the development kit is set to boot from the micro-SD card. Boot switches should be changed with power off.

.. |image-boot-sd| image:: ../../images/phyflex-am62px/boot/pba-bg-41_boot-sd.webp
   :width: 150px
   :alt: S1 set to SD Card boot
.. |image-boot-emmc| image:: ../../images/phyflex-am62px/boot/pba-bg-41_boot-emmc.webp
   :width: 150px
   :alt: S1 set to eMMC boot
.. |image-boot-uart| image:: ../../images/phyflex-am62px/boot/pba-bg-41_boot-uart.webp
   :width: 150px
   :alt: S1 set to UART boot

.. list-table:: Boot Switch S1
   :header-rows: 1

   * - Boot Device
     - Switch Setting
   * - SD Card
     - |image-boot-sd|
   * - eMMC
     - |image-boot-emmc|
   * - UART
     - |image-boot-uart|

.. tip::
   Look for the "ON" marking on S1 to confirm which way the switches point. The setting can easily be flipped depending on the orientation of the development kit.

.. note::
   S1 only selects the primary boot device. The backup boot device is set on the SOM to the SD card.