projects / thirdparty / u-boot.git / blame
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1 | .. SPDX-License-Identifier: GPL-2.0+ |
| 2 | .. sectionauthor:: Stephan Gerhold <stephan@gerhold.net> | |
| 3 | ||
| 4 | DragonBoard 410c | |
| 5 | ================ | |
| 6 | ||
| 7 | The DragonBoard 410c is a development board based on the Qualcomm APQ8016E SoC. | |
| 8 | More information can be found on the `96Boards product page`_. | |
| 9 | ||
| 10 | U-Boot can be used as a replacement for Qualcomm's original Android bootloader | |
| 11 | (a fork of Little Kernel/LK). Like LK, it is installed directly into the ``aboot`` | |
| 12 | partition. Note that the U-Boot port used to be loaded as an Android boot image | |
| 13 | through LK. This is no longer the case, now U-Boot can replace LK entirely. | |
| 14 | ||
| 15 | .. _96Boards product page: https://www.96boards.org/product/dragonboard410c/ | |
| 16 | ||
| d795efef CC |
17 | .. _MSM8916/SD410/APQ8016 Technical Reference Manual: https://web.archive.org/web/20210525022203/https://developer.qualcomm.com/qfile/35259/lm80-p0436-100_d_snapdragon_410e_apq8016e_tech_reference_manual_revd.pdf |
| 18 | ||
| 0204d1b5 SG |
19 | Installation |
| 20 | ------------ | |
| 21 | First, setup ``CROSS_COMPILE`` for aarch64. Then, build U-Boot for ``dragonboard410c``:: | |
| 22 | ||
| 23 | $ export CROSS_COMPILE=<aarch64 toolchain prefix> | |
| 24 | $ make dragonboard410c_defconfig | |
| 25 | $ make | |
| 26 | ||
| 27 | This will build ``u-boot.elf`` in the configured output directory. | |
| 28 | ||
| 29 | Although the DragonBoard 410c does not have secure boot set up by default, | |
| 30 | the firmware still expects firmware ELF images to be "signed". The signature | |
| 31 | does not provide any security in this case, but it provides the firmware with | |
| 32 | some required metadata. | |
| 33 | ||
| 34 | To "sign" ``u-boot.elf`` you can use e.g. `qtestsign`_:: | |
| 35 | ||
| 36 | $ ./qtestsign.py aboot u-boot.elf | |
| 37 | ||
| 38 | Then install the resulting ``u-boot-test-signed.mbn`` to the ``aboot`` partition | |
| 39 | on your device, e.g. with ``fastboot flash aboot u-boot-test-signed.mbn``. | |
| 40 | ||
| 41 | U-Boot should be running after a reboot (``fastboot reboot``). | |
| 42 | ||
| 43 | .. _qtestsign: https://github.com/msm8916-mainline/qtestsign | |
| 44 | ||
| 45 | Usage | |
| 46 | ----- | |
| 47 | Press Volume Down during boot to enter Fastboot mode. |