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feat(U-Boot): Add USB MSC boot documentation for AM62L #794

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Merged
praneethbajjuri merged 1 commit into from
Sep 15, 2026
+29 −2
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feat(U-Boot): Add USB MSC boot documentation for AM62L #794

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11 changes: 10 additions & 1 deletion source/linux/Foundational_Components/U-Boot/BG-Build-K3.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -433,7 +433,7 @@ All of these binaries are available in the SDK at :file:`<path to tisdk>/board-s
.. csv-table::
:header: "Board","SD / UART / OSPI / USB DFU","USB MSC"

"AM62LX EVM", ``am62lx_evm_defconfig``, ``am62lx_evm_defconfig``
"AM62LX EVM", ``am62lx_evm_defconfig``, ``am62lx_evm_defconfig`` ``am62x_a53_usbmsc.config``
"BeagleBadge", ``am62lx_badge_defconfig``, ""

.. note::
Expand Down Expand Up @@ -476,6 +476,15 @@ All of these binaries are available in the SDK at :file:`<path to tisdk>/board-s
BINMAN_INDIRS=$TI_LINUX_FW_DIR \
TEE=$OPTEE_DIR/out/arm-plat-k3/core/tee-pager_v2.bin

.. note::

The :file:`am62x_a53_usbmsc.config` config fragment can be used to enable
USB MSC boot support.

.. code-block:: console

$ make CROSS_COMPILE="$CROSS_COMPILE_64" am62lx_evm_defconfig am62x_a53_usbmsc.config

.. note::

The :file:`am62lx_falcon.config` config fragment can be used to enable
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20 changes: 19 additions & 1 deletion source/linux/Foundational_Components/U-Boot/UG-Memory-K3.rst
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Expand Up @@ -411,7 +411,7 @@
Flash and boot SPL from USB storage
===================================

.. ifconfig:: CONFIG_part_variant not in ('J7200', 'J721E', 'AM64X', 'AM65X', 'J722S')
.. ifconfig:: CONFIG_part_variant not in ('J7200', 'J721E', 'AM64X', 'AM65X', 'J722S', 'AM62LX')

Boot SPL from USB storage documentation is pending for |__PART_FAMILY_DEVICE_NAMES__|
reach out to: `Help e2e <https://e2e.ti.com//>`__ for additional information.
Expand All @@ -423,6 +423,24 @@
The SoC does not support booting from USB mass storage, but USB can still be
accessed as storage device at U-Boot prompt.

.. ifconfig:: CONFIG_part_variant in ('AM62LX')

Booting to U-Boot prompt from USB storage is supported. The following are the
steps to be followed:

- Build the boot loader images using the default ``am62lx_evm_defconfig`` with the
config fragment ``am62x_a53_usbmsc.config``. The configs required for USB MSC boot
are enabled by this fragment. For instructions to build the boot loader images,
refer to :ref:`Build-U-Boot-label`.
- Create a FAT32 partition with boot flag enabled on the USB storage device.
- Copy the boot loader images (:file:`tiboot3.bin`, :file:`tispl.bin`,
:file:`u-boot.img`) into the above created partition.
- Set the boot mode switches to USB host boot mode (Refer to the
**Initialization/Boot Mode Pins** chapter of TRM for boot switch details).

Check warning on line 439 in source/linux/Foundational_Components/U-Boot/UG-Memory-K3.rst

View workflow job for this annotation

GitHub Actions / vale 

[vale] reported by reviewdog 🐶
[RedHat.Slash] Use either 'or' or 'and' in 'Initialization/Boot'

Raw Output:
{"message":"[RedHat.Slash] Use either 'or' or 'and' in 'Initialization/Boot'","location":{"path":"source/linux/Foundational_Components/U-Boot/UG-Memory-K3.rst","range":{"start":{"line":439,"column":8},"end":{"line":439,"column":27}}},"severity":"WARNING","code":{"value":"RedHat.Slash","url":"https://redhat-documentation.github.io/vale-at-red-hat/reference-guide.html#slash"}}
- Connect the USB Mass storage device with the boot loader images and boot up
the board.
- The board should now boot to u-boot prompt.

.. ifconfig:: CONFIG_part_variant in ('AM64X', 'AM65X', 'J722S')

.. ifconfig:: CONFIG_part_variant in ('AM64X')
Expand Down