diff options
Diffstat (limited to 'doc/board')
| -rw-r--r-- | doc/board/qualcomm/sdm845.rst | 100 |
1 files changed, 87 insertions, 13 deletions
diff --git a/doc/board/qualcomm/sdm845.rst b/doc/board/qualcomm/sdm845.rst index b6642c95790..8ef47492877 100644 --- a/doc/board/qualcomm/sdm845.rst +++ b/doc/board/qualcomm/sdm845.rst @@ -35,9 +35,25 @@ 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: +with appended dtb, so let's mimic linux to satisfy stock bootloader. -- create dump dtb:: +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 "$workdir" @@ -56,10 +72,15 @@ with appended dtb, so let's mimic linux to satisfy stock bootloader: }; EOF -- gzip u-boot ``gzip u-boot.bin`` -- append dtb to gzipped u-boot: ``cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb`` +- gzip u-boot:: + + gzip u-boot.bin -Now we've got everything to build android boot image::: +- 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 \ @@ -68,16 +89,69 @@ Now we've got everything to build android boot image::: --kernel u-boot.bin.gz-dtb \ -o boot.img -Flash image with your phone's flashing method. +- Flash image with your phone's flashing method. -Boards ------------- -starqlte -^^^^^^^^^^^^ +More information can be found on the `Samsung S9 page`_. -The starqltechn is a production board for Samsung S9 (SM-G9600) phone, -based on the Qualcomm SDM845 SoC. +dragonboard845c +^^^^^^^^^^^^^^^ -More information can be found on the `Samsung S9 page`_. +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. + +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/ |