| U-Boot for the Technexion Pico i.MX8MQ |
| |
| Quick Start |
| =========== |
| - Build the TFA binary |
| - Get DDR and HDMI firmware |
| - Build U-Boot |
| - Boot |
| |
| Get and Build the TFA blob |
| ========================== |
| Note: srctree is U-Boot source directory |
| Get ATF from: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git |
| branch: master |
| $ CROSS_COMPILE=aarch64-linux-gnu- make PLAT=imx8mq bl31 |
| $ cp build/imx8mq/release/bl31.bin $(builddir) |
| |
| Get the DDR and HDMI firmware |
| ============================= |
| $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-7.9.bin |
| $ chmod +x firmware-imx-7.9.bin |
| $ ./firmware-imx-7.9.bin |
| # Or use this to avoid running random scripts from the internet, |
| # but note that you must agree to the license the script displays: |
| # $ dd if=firmware-imx-7.9.bin of=firmware-imx-7.9.tar.bz2 bs=38868 skip=1 |
| # $ tar -xf firmware-imx-7.9.tar.bz2 |
| $ cp firmware-imx-7.9/firmware/hdmi/cadence/signed_hdmi_imx8m.bin $(builddir) |
| $ cp firmware-imx-7.9/firmware/ddr/synopsys/lpddr4*.bin $(builddir) |
| |
| Build U-Boot |
| ============ |
| $ export CROSS_COMPILE=aarch64-poky-linux- |
| $ make pico-imx8mq_defconfig |
| $ make flash.bin |
| |
| Burn the flash.bin to MicroSD card offset 33KB |
| $ dd if=flash.bin of=/dev/mmcblkX bs=1024 seek=33 |
| Or into eMMC from a running system |
| $ dhcp flash.bin && mmc write $loadaddr 0x42 0x800 |
| |
| Boot |
| ==== |
| "o" denotes a pin |
| "[]" denotes two pins bridged by a jumper |
| |
| eMMC boot: |
| J1 o[] []o J2 |
| []o o[] |
| |
| USB upload via USB-C connector: |
| J1 ooo ooo J2 |
| o[] []o |