The init does not write to console backed by UART

[imkiva]

related:

https://stackoverflow.com/questions/66237903/qemu-linux-doesnt-write-in-console-after-init
https://stackoverflow.com/questions/66204856/busybox-doesnt-run-console

[imkiva]

https://stackoverflow.com/questions/33843143/booting-linux-kernel-using-a-simple-char-driver-as-console

A work around might be to create a custom initramfs that changes the /dev/console device node from major 5 minor 1 to use minor 3, thus changing it into /dev/ttyprintk. Or symlink to achieve the same thing. This should get init to use ttyprintk as its stdin/stdout/stderr.

updated: not work

[imkiva]

https://stackoverflow.com/questions/10437995/initramfs-built-into-custom-linux-kernel-is-not-running

[imkiva]

Another thought: HTIF?