Rock 5C lite - SPI boot

#1

Hello,

I’m trying to boot my Rock 5C lite from SPI with 5C files from here (because I can’t find 5C lite files).

However when I flash the rock-5c-spi-image-20240528.img my board lights up both LEDs (green and blue) without blinking and there’s no display on the HDMI screen.

I’m wondering whether the screen is the faulty one or the files.
I know that normal boot would make the blue LED blink as it does when booting from SD card.

I would appreciate some help :pray:

BR

#2

please try to clear this spi imgs, and then watch the hdmi and leds

#3

and if you want to boot from spi, you can use rsetup to update the spi img

#4

perhaps you need this guide https://docs.radxa.com/en/rock5/rock5c/getting-started/install-os/nvme

#5

Thanks @Nasca I appreciate your help :pray:
I did install https://github.com/radxa-build/rock-5c/releases/tag/rsdk-b1 on a SD card.
I booted from it and used rsetup to flash rock-5c-spi on the SPI flash module.
It appears to have succeed since I have rsetup telling me the SPI bootloader has been updated successfully.

However when I reboot (without the SD card) the board lights up both LEDs (green and blue) with no blinking and does not output anything on the screen.

Shouldn’t I have a U-Boot prompt displayed on the screen?

Any idea?

#6

Currently, the screen only displays the kernel’s logs, are you trying to display a u-boot console or something else? Or please help to express what you want to show in u-boot?

#7

Since there’s not enough space to hold the kernel inside the SPI 16 mb, yes I expect to see U-boot console at least.
I’m trying to netboot the device so I would like the U-boot prompt to be displayed so I can enter TFTP env commands and so on.

Rk3582 soc broken ip node check
#8

The u-boot prompt is displayed over the UART. You can enter commands there.

#9

Thank you @DualTachyon I was wrong since the beginning.
I decided to follow instructions from https://wiki.radxa.com/Rock5/guide/serial-console but I can’t manage to have any serial output from my board.

I have two pairs of USB-TTL cables:

  • CP2102
  • CH340

None of them provide any output (either with minicom or Putty)

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Am I wrong somewhere else?
BR

#10

Please change your RX and TX positions

#11

Thank you! Indeed I had to invert RX with TX, u-boot prompt is now displayed :raised_hands:

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