Amlogic HDMI Boot Dongle: “Boot from HDMI”?

Boot from floppy, boot from HD,
Boot from network, boot from CD,
Boot from SD, even boot from USB.

Boot from HDMI… wait, come again? https://t.co/sRQSI72KLc
(courtesy of @Superna9999 )

— Kieran Bingham (@kieranbingham) October 5, 2019

It’s not really « boot from HDMI » the bootROM will fetch 8bytes from the HDMI ddc link from a non-standard i2c address and offset to force a specific boot mode (Usb, sdcard, eMMC, nand, SPI) for debug purposes

— Neil Armstrong (@Superna9999) October 5, 2019