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