ROC-RK3399-PC Board Boot Media Detection Sequence

Hardware
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#1

This is not the boot sequence of u-boot bootloader! This is the boot sequence of the board SoC.

  1. SPI
  2. eMMC
  3. MicroSD
  4. USB OTG

Please note that if you flash a partial or bad SPI image, the device might get bricked until the SPI is re-flashed. Since it is the first boot priority, you may have to short one of the SPI data pins with ground in order for the SoC bootloader to skip SPI.

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#2

Are there any plans to implement or assist with the tow-boot launcher? It is attempting to provide a BIOS like experience for SBC at the moment.

Link to the Mezzanine tow-boot for example.

https://tow-boot.org/devices/libreComputer-rocRk3399PcMezzanine.html

#3

u-boot 2023.01 will have lots of bootmenu changes. We will reimplement the bootloaders on that version and add the proper menus then.

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