Martin Pool's blog

serial/network console on rx2600 linux

Getting the serial/network console to work on rx2600 is more difficult than it should be.

The trick is:

Use the EFI menu to configure exactly one UART as the input/output/error channel. (I find it works better to use the PCI rather than PNP hardware path, but that may be just superstition.)

Choose Cold Reset from the EFI menu. Merely booting Linux after changing the devices won't work!

Boot with linux console=ttyS0.

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