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diff --git a/doc/board/qualcomm/sdm845.rst b/doc/board/qualcomm/sdm845.rst deleted file mode 100644 index a65f00df39f..00000000000 --- a/doc/board/qualcomm/sdm845.rst +++ /dev/null @@ -1,167 +0,0 @@ -.. SPDX-License-Identifier: GPL-2.0+ -.. sectionauthor:: Dzmitry Sankouski <dsankouski@gmail.com> - -Snapdragon 845 -============== - -About this ----------- - -This document describes the information about Qualcomm Snapdragon 845 -supported boards and it's usage steps. - -SDM845 - hi-end qualcomm chip, introduced in late 2017. -Mostly used in flagship phones and tablets of 2018. - -The current boot flow support loading u-boot as an Android boot image via -Qualcomm's UEFI-based ABL (Android) Bootloader. - -Installation ------------- - -Build -^^^^^ - -Setup ``CROSS_COMPILE`` for aarch64 and build U-Boot for your board:: - - $ export CROSS_COMPILE=<aarch64 toolchain prefix> - $ make <your board name here, see Boards section>_defconfig - $ make - -This will build ``u-boot.bin`` in the configured output directory. - -Generate FIT image -^^^^^^^^^^^^^^^^^^ - -See doc/uImage.FIT for more details - -Pack android boot image -^^^^^^^^^^^^^^^^^^^^^^^ - -We'll assemble android boot image with ``u-boot.bin`` instead of linux kernel, -and FIT image instead of ``initramfs``. Android bootloader expect gzipped kernel -with appended dtb, so let's mimic linux to satisfy stock bootloader. - -Boards ------- - -starqlte -^^^^^^^^ - -The starqltechn is a production board for Samsung S9 (SM-G9600) phone, -based on the Qualcomm SDM845 SoC. - -Steps: - -- Build u-boot:: - - $ export CROSS_COMPILE=<aarch64 toolchain prefix> - $ make starqltechn_defconfig - $ make - -- Create dump dtb:: - - workdir=/tmp/prepare_payload - mkdir -p "$workdir" - cd "$workdir" - mock_dtb="$workdir"/payload_mock.dtb - - dtc -I dts -O dtb -o "$mock_dtb" << EOF - /dts-v1/; - / { - memory { - /* We expect the bootloader to fill in the size */ - reg = <0 0 0 0>; - }; - - chosen { }; - }; - EOF - -- gzip u-boot:: - - gzip u-boot.bin - -- Append dtb to gzipped u-boot:: - - cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb - -- Now we've got everything to build android boot image:: - - mkbootimg --base 0x0 --kernel_offset 0x00008000 \ - --ramdisk_offset 0x02000000 --tags_offset 0x01e00000 \ - --pagesize 4096 --second_offset 0x00f00000 \ - --ramdisk "$fit_image" \ - --kernel u-boot.bin.gz-dtb \ - -o boot.img - -- Flash image with your phone's flashing method. - -More information can be found on the `Samsung S9 page`_. - -dragonboard845c -^^^^^^^^^^^^^^^ - -The dragonboard845c is a Qualcomm Robotics RB3 Development Platform, based on -the Qualcomm SDM845 SoC. - -Steps: - -- Build u-boot:: - - $ export CROSS_COMPILE=<aarch64 toolchain prefix> - $ make dragonboard845c_defconfig - $ make - -- Create dummy dtb:: - - workdir=/tmp/prepare_payload - mkdir -p "$workdir" - mock_dtb="$workdir"/payload_mock.dtb - - dtc -I dts -O dtb -o "$mock_dtb" << EOF - /dts-v1/; - / { - #address-cells = <2>; - #size-cells = <2>; - - memory@80000000 { - device_type = "memory"; - /* We expect the bootloader to fill in the size */ - reg = <0 0x80000000 0 0>; - }; - - chosen { }; - }; - EOF - -- gzip u-boot:: - - gzip u-boot.bin - -- Append dtb to gzipped u-boot:: - - cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb - -- A ``db845c.its`` file can be found in ``board/qualcomm/dragonboard845c/`` - directory. It expects a folder as ``db845c_imgs/`` in the main directory - containing pre-built kernel, dts and ramdisk images. See ``db845c.its`` - for full path to images:: - - mkimage -f db845c.its db845c.itb - -- Now we've got everything to build android boot image:: - - mkbootimg --kernel u-boot.bin.gz-dtb --ramdisk db845c.itb \ - --output boot.img --pagesize 4096 --base 0x80000000 - -- Flash boot.img using db845c fastboot method: - - .. code-block:: bash - - sudo fastboot flash boot boot.img - -More information can be found on the `DragonBoard 845c page`_. - -.. _Samsung S9 page: https://en.wikipedia.org/wiki/Samsung_Galaxy_S9 -.. _DragonBoard 845c page: https://www.96boards.org/product/rb3-platform/ |