Buld AR8MXMQ U-boot imx_v2018.03_4.14.98_2.2.0-bcm
===

[](https://hackmd.io/d1Cwode-TrK4s3bsN81vWA)
1. Download and install Yocto SDK
* [Yocto 4.14.98](https://engineering.bcmcom.com/CustomerDL/AR8MXMQ/fsl-imx-xwayland-glibc-x86_64-core-image-minimal-aarch64-toolchain-4.14-sumo.sh)
* [Yocto 5.4.47](https://engineering.bcmcom.com/CustomerDL/AR8MXMQ/fsl-imx-xwayland-glibc-x86_64-core-image-minimal-aarch64-imx8mnevk-toolchain-5.4-zeus.sh)

1.1 Installation (pick up one or both)

    $ wget https://engineering.bcmcom.com/CustomerDL/AR8MXMQ/fsl-imx-xwayland-glibc-x86_64-core-image-minimal-aarch64-toolchain-4.14-sumo.sh
    $ sh ./fsl-imx-xwayland-glibc-x86_64-core-image-minimal-aarch64-toolchain-4.14-sumo.sh
    
    $ wget https://engineering.bcmcom.com/CustomerDL/AR8MXMQ/fsl-imx-xwayland-glibc-x86_64-core-image-minimal-aarch64-imx8mnevk-toolchain-5.4-zeus.sh
    $ sh ./fsl-imx-xwayland-glibc-x86_64-core-image-minimal-aarch64-imx8mnevk-toolchain-5.4-zeus.sh

1.1.1 Remove `-wl` in LDFLAGS

`sudo sed -i 's/-Wl,//g' /opt/fsl-imx-xwayland/4.14-sumo/environment-setup-aarch64-poky-linux`

or

`sudo sed -i 's/-Wl,//g' /opt/fsl-imx-xwayland/5.4-zeus/environment-setup-aarch64-poky-linux`

1.2 Prepare build environment

` . /opt/fsl-imx-xwayland/4.14-sumo/environment-setup-aarch64-poky-linux`

or

`. /opt/fsl-imx-xwayland/5.4-zeus/environment-setup-aarch64-poky-linux`

2. Download [imx-mkimage](https://engineering.bcmcom.com/CustomerDL/AR8MXMQ/imx-mkimage.tgz) for u-boot v2018.03

    $ wget https://engineering.bcmcom.com/CustomerDL/AR8MXMQ/imx-mkimage.tgz
    $ tar zxvf imx-mkimage.tgz

3. Download and Build u-boot source code

3.1 Download u-boot source from Github

    $ git clone https://github.com/bcmadvancedresearch/u-boot-imx.git
    $ cd u-boot-imx
    $ git checkout imx_v2018.03_4.14.98_2.2.0-bcm

3.2 Configure and build
|RAM |Linux |Android|
| :---: | :---: | :---: |
|2GB |imx8mq_ar8mxm_defconfig | imx8mq_ar8mxm_android_defconfig |
|4GB |imx8mq_ar8mxm_4gb_defconfig | imx8mq_ar8mxm_4gb_android_defconfig |

    $ make mrproper
    $ make imx8mq_ar8mxm_defconfig
    $ make -j4
    $ cp arch/arm/dts/bcmtwn-imx8mq-ar8mxm.dtb $(imx-mkimage-dir)/iMX8M/
    $ cp u-boot-nodtb.bin $(imx-mkimage-dir)/iMX8M/
    $ cp spl/u-boot-spl.bin $(imx-mkimage-dir)/iMX8M/
    
    $ cd $(imx-mkimage-dir)
    $ make clean; make SOC=iMX8M flash_hdmi_spl_uboot_ar8mxm

get `flash.bin` in `$(imx-mkimage-dir)/iMX8M/`
4. Burn the flash.bin to MicroSD card/eMMC offset 33KB (dd for removalbe storage and uuu for USB type-c downlaoding)

4.1 Use dd

`sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33`

4.2 Use [uuu](https://github.com/NXPmicro/mfgtools/releases) (preferred)

Move jumper from JP5 to JP4, enter downloader mode

`uuu -b sd flash.bin`

or

`uuu -b emmc flash.bin`

Move jumper back to JP5

4.3 Boot Mode (JP6)

with jumper = 1, without jumper = 0
|MicroSD |eMMC |
| :---: | :---: |
|1100 |0010 |