kernel doesn't start booting after chaning to minimum config (on qemu arm64 machine)
ckim at etri.re.kr
Wed Oct 13 04:21:58 EDT 2021
Hi Greg K-H,
> There are two different ways of getting a "minimal" kernel
> - start with a working one and remove items until something
> - start with a minimal config and keep adding things until it
> Usually the first option is the easier one, as it should go faster and you
> can figure out exactly what is needed. The second way is just blindly
> guessing, like it seems you are doing here.
> Best of luck!
> greg k-h
After reading your email I thought I'd try just a couple of more additions (because gradually removing will take so long..) and tried adding the most suspicious ones. Then I found CONFIG_SERIAL_AMBA_PL011, CONFIG_SERIAL_AMBA_PL011_CONSOLE and CONFIG_SERIAL_EARLYCON_ARM_SEMIHOST were not set! (qemu virt machine uses PL011 not PL010 which was set). After this addition, it boots ok to the shell! I was very luck.. 😊
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