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- .. SPDX-License-Identifier: GPL-2.0+
- .. sectionauthor:: Stephan Gerhold <stephan@gerhold.net>
- DragonBoard 410c
- ================
- The DragonBoard 410c is a development board based on the Qualcomm APQ8016E SoC.
- More information can be found on the `96Boards product page`_.
- U-Boot can be used as a replacement for Qualcomm's original Android bootloader
- (a fork of Little Kernel/LK). Like LK, it is installed directly into the ``aboot``
- partition. Note that the U-Boot port used to be loaded as an Android boot image
- through LK. This is no longer the case, now U-Boot can replace LK entirely.
- .. _96Boards product page: https://www.96boards.org/product/dragonboard410c/
- Installation
- ------------
- First, setup ``CROSS_COMPILE`` for aarch64. Then, build U-Boot for ``dragonboard410c``::
- $ export CROSS_COMPILE=<aarch64 toolchain prefix>
- $ make dragonboard410c_defconfig
- $ make
- This will build ``u-boot.elf`` in the configured output directory.
- Although the DragonBoard 410c does not have secure boot set up by default,
- the firmware still expects firmware ELF images to be "signed". The signature
- does not provide any security in this case, but it provides the firmware with
- some required metadata.
- To "sign" ``u-boot.elf`` you can use e.g. `qtestsign`_::
- $ ./qtestsign.py aboot u-boot.elf
- Then install the resulting ``u-boot-test-signed.mbn`` to the ``aboot`` partition
- on your device, e.g. with ``fastboot flash aboot u-boot-test-signed.mbn``.
- U-Boot should be running after a reboot (``fastboot reboot``).
- .. _qtestsign: https://github.com/msm8916-mainline/qtestsign
- Usage
- -----
- Press Volume Down during boot to enter Fastboot mode.
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