Description
====================
HiKey is one of 96boards. Hisilicon Kirin6220 processor is installed on HiKey.

More information are listed in [link](https://github.com/96boards/documentation/blob/master/ConsumerEdition/HiKey/Quickstart/README.md).


How to build
====================

1. Code Locations
-----------------

  * ARM Trusted Firmware:
    [link](https://github.com/ARM-software/arm-trusted-firmware)

  * edk2:
    [link](https://github.com/96boards-hikey/edk2/tree/testing/hikey960_v2.5)

  * OpenPlatformPkg:
    [link](https://github.com/96boards-hikey/OpenPlatformPkg/tree/testing/hikey960_v1.3.4)

  * l-loader:
    [link](https://github.com/96boards-hikey/l-loader/tree/testing/hikey960_v1.2)

  * uefi-tools:
    [link](https://github.com/96boards-hikey/uefi-tools/tree/testing/hikey960_v1)

  * atf-fastboot:
    [link](https://github.com/96boards-hikey/atf-fastboot/tree/master)


2. Build Procedure
------------------

  * Fetch all the above repositories into local host.
    Make all the repositories in the same ${BUILD_PATH}.

  * Create the symbol link to OpenPlatformPkg in edk2.
    ```shell
    $cd ${BUILD_PATH}/edk2
    $ln -sf ../OpenPlatformPkg
    ```

  * Prepare AARCH64 && AARCH32 toolchain. Prepare python.

  * If your hikey hardware is built by CircuitCo, update _uefi-tools/platform.config_ first. _(optional)_
    __Uncomment the below sentence. Otherwise, UEFI can't output messages on serial
    console on hikey.__
    ```shell
    BUILDFLAGS=-DSERIAL_BASE=0xF8015000
    ```
    If your hikey hardware is built by LeMarker, nothing to do.

  * Build it as debug mode. Create your own build script file or you could refer to __build_uefi.sh__ in l-loader git repository.
    ```shell
    BUILD_OPTION=DEBUG
    export AARCH64_TOOLCHAIN=GCC5
    export UEFI_TOOLS_DIR=${BUILD_PATH}/uefi-tools
    export EDK2_DIR=${BUILD_PATH}/edk2
    EDK2_OUTPUT_DIR=${EDK2_DIR}/Build/HiKey/${BUILD_OPTION}_${AARCH64_TOOLCHAIN}
    # Build fastboot for ARM Trust Firmware. It's used for recovery mode.
    cd ${BUILD_PATH}/atf-fastboot
    CROSS_COMPILE=aarch64-linux-gnu- make PLAT=hikey DEBUG=1
    # Convert DEBUG/RELEASE to debug/release
    FASTBOOT_BUILD_OPTION=$(echo ${BUILD_OPTION} | tr '[A-Z]' '[a-z]')
    cd ${EDK2_DIR}
    # Build UEFI & ARM Trust Firmware
    ${UEFI_TOOLS_DIR}/uefi-build.sh -b ${BUILD_OPTION} -a ../arm-trusted-firmware hikey
    # Generate l-loader.bin
    cd ${BUILD_PATH}/l-loader
    ln -sf ${EDK2_OUTPUT_DIR}/FV/bl1.bin
    ln -sf ${EDK2_OUTPUT_DIR}/FV/fip.bin
    ln -sf ${BUILD_PATH}/atf-fastboot/build/hikey/${FASTBOOT_BUILD_OPTION}/bl1.bin fastboot.bin
    python gen_loader.py -o l-loader.bin --img_bl1=bl1.bin --img_ns_bl1u=BL33_AP_UEFI.fd
    arm-linux-gnueabihf-gcc -c -o start.o start.S
    arm-linux-gnueabihf-ld -Bstatic -Tl-loader.lds -Ttext 0xf9800800 start.o -o loader
    arm-linux-gnueabihf-objcopy -O binary loader temp
    python gen_loader_hikey.py -o l-loader.bin --img_loader=temp --img_bl1=bl1.bin --img_ns_bl1u=fastboot.bin
    ```

  * Generate partition table for aosp. The eMMC capacity is either 4GB or 8GB. Just change "aosp-4g" to "linux-4g" for debian.
    ```shell
    $PTABLE=aosp-4g SECTOR_SIZE=512 bash -x generate_ptable.sh
    ```


3. Setup Console
----------------

  * Install ser2net. Use telnet as the console since UEFI fails to display Boot Manager GUI in minicom. __If you don't need Boot Manager GUI, just ignore this section.__
    ```shell
    $sudo apt-get install ser2net
    ```

  * Configure ser2net.
    ```shell
    $sudo vi /etc/ser2net.conf
    ```

    Append one line for serial-over-USB in below.
    _#ser2net.conf_
    ```shell
    2004:telnet:0:/dev/ttyUSB0:115200 8DATABITS NONE 1STOPBIT banner
    ```

  * Open the console.
    ```shell
    $telnet localhost 2004
    ```

    And you could open the console remotely, too.


4. Flush images in recovery mode
-----------------------------

  * Make sure Pin3-Pin4 on J15 are connected for recovery mode. Then power on HiKey.

  * Remove the modemmanager package. This package may cause the idt tool failure.
    ```shell
    $sudo apt-get purge modemmanager
    ```

  * Run the command to download l-loader.bin into HiKey.
    ```shell
    $sudo python hisi-idt.py -d /dev/ttyUSB1 --img1 l-loader.bin
    ```

  * Update images. All aosp or debian images could be fetched from [link](https://builds.96boards.org/).
    ```shell
    $sudo fastboot flash ptable prm_ptable.img
    $sudo fastboot flash fastboot fip.bin
    $sudo fastboot flash boot boot.img
    $sudo fastboot flash cache cache.img
    $sudo fastboot flash system system.img
    $sudo  fastboot flash userdata userdata.img
    ```


5. Boot UEFI in normal mode
-----------------------------

  * Make sure Pin3-Pin4 on J15 are open for normal boot mode. Then power on HiKey.

  * Reference [link](https://github.com/96boards-hikey/tools-images-hikey960/blob/master/build-from-source/README-ATF-UEFI-build-from-source.md)