diff options
Diffstat (limited to 'doc/board/schneider/hmibsc.rst')
| -rw-r--r-- | doc/board/schneider/hmibsc.rst | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/doc/board/schneider/hmibsc.rst b/doc/board/schneider/hmibsc.rst new file mode 100644 index 00000000000..f09fb5af1b3 --- /dev/null +++ b/doc/board/schneider/hmibsc.rst @@ -0,0 +1,45 @@ +.. SPDX-License-Identifier: GPL-2.0+ +.. sectionauthor:: Sumit Garg <sumit.garg@linaro.org> + +HMIBSC +====== + +The HMIBSC is an IIoT Edge Box Core board based on the Qualcomm APQ8016E SoC. +More information can be found on the `SE 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. + +.. _SE product page: https://www.se.com/us/en/product/HMIBSCEA53D1L0T/iiot-edge-box-core-harmony-ipc-emmc-dc-linux-tpm/ + +Build steps +----------- + +First, setup ``CROSS_COMPILE`` for aarch64. Then, build U-Boot for ``hmibsc``:: + + $ export CROSS_COMPILE=<aarch64 toolchain prefix> + $ make hmibsc_defconfig + $ make + +This will build ``u-boot.elf`` in the configured output directory. + +Installation +------------ + +Although the HMIBSC 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 |