On Tue, Jun 17, 2025 at 03:41:15PM +0100, Robert Swindells wrote: > Start at the 'struct consdev comcons' declaration, that links to the > functions needed.
I made some progress. When booting with consdev=ucom,0,115200, ucom0 attaches the console when ucom_attach() is called. Here is the code so far: https://dl.espci.fr/ticket/cf60ed7e55d22201404446e3fc3f0544 I did not include the efiboot part, which is still a bit messy. There are three problems: 1.system freeze shortly after reaching multiuser. I have been able to get a panic once: spec_close() was unhappy about an open count. I suspect the call to ucomopen() in ucom_attach() is the culprit. Comments welcome 2.I cannot get a getty to open /dev/ttyU0. ktrace says: 5347 5347 getty CALL open(0xab24e0,2,0xfffffffffffff5a8) 5347 5347 getty NAMI "/dev/ttyU0" 5347 5347 getty RET open RESTART 5347 5347 getty CALL open(0xab24e0,2,0xfffffffffffff5a8) 5347 5347 getty NAMI "/dev/ttyU0" 5347 5347 getty RET open RESTART 5347 5347 getty CALL open(0xab24e0,2,0xfffffffffffff5a8) 5347 5347 getty NAMI "/dev/ttyU0" 5347 5347 getty RET open RESTART 3.No way to break into DDB. What did I do wrong? -- Emmanuel Dreyfus m...@netbsd.org
