Is it possible to compile Linux for Wio Terminal? From this it seems like you need a chip with an MMU to run Linux.
From the link, uCLinux seems like an enhanced version of RTOS. If you want to achieve multi-processing in Wio Terminal, there has been FreeRTOS in Arduino. Cortex-M3 does not have enough resources to run the full OS.
Additionally, Wio Terminal only has 120MHz (Boost up to 200MHz) clock, 4MB External Flash and 192KB RAM. Compare those specs with Raspberry Pi 0 - 4, you will find that Wio Terminal is not suitable.
If you still want to try, this link can worth your attempt even if the last commit was 3 years ago.
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