Re: not working /dev/console

> On 9 Dec 2024, at 10:35, Daniel Braniss <danny@cs.huji.ac.il> wrote:
> 
> hi Kurt & Warner:
> im trying on a PCengines apu2 fbsd 14.2, but have the same symptoms, no console.
> dmesg|grep uart -> nothing.
> after some trials the best i have is:
> 	the bsd-menu showing 
> 		5. Cons: Serial
> and only the kernel messages.
> 
> no /dev/console, no /dev/ttyu0, but can remote login.
> 
> btw, all works fine with a 13.1 kernel
> 
>> On 8 Dec 2024, at 20:27, Kurt Jaeger <pi@freebsd.org> wrote:
>> 
>> Hi!
>> 
>>> So, there should be a line like
>>> 
>>> uart0: console (115200,n,8,1)
>>> 
>>> if not, then hw.uart.console isn't making it through.
>> 
>> So somehow the uarts are not found during initialization ?
>> 
>>> If you are using a custom kernel,
>> 
>> It's the generic kernel.
>> 
>>> you can add that to a file and add 'env
>>> /path/to/file/on/build/host' to the kernel config to wire that into the
>>> kernel, should the boot path make it hard to set an initial environment
>>> otherwise. Also, DHCP should still try to grab /boot/loader.conf from the
>>> tftp/http server as well. That might also be something that needs debugging
>>> (or hopefully just correct config).
>> 
>> I'll investigate further.


I made a diff from booting 13.1 and 14.2 with boot_verbose, and this stands out:
(only in the 13.1)

-pcib0: allocated type 4 (0x3f8-0x3f8) for rid 0 of uart0
-pcib0: allocated type 4 (0x3f8-0x3f8) for rid 0 of uart0
-uart0: <16550 or compatible> at port 0x3f8 irq 4 flags 0x10 on isa0
-pcib0: allocated type 4 (0x3f8-0x3f8) for rid 0 of uart0
-uart0: console (115200,n,8,1)
-ioapic0: routing intpin 4 (ISA IRQ 4) to lapic 2 vector 53
-uart0: fast interrupt
-uart0: PPS capture mode: DCD
-pcib0: allocated type 4 (0x2f8-0x2f8) for rid 0 of uart1
-pcib0: allocated type 4 (0x2f8-0x2f8) for rid 0 of uart1
-uart1: <16550 or compatible> at port 0x2f8 irq 3 on isa0
-pcib0: allocated type 4 (0x2f8-0x2f8) for rid 0 of uart1
-ioapic0: routing intpin 3 (ISA IRQ 3) to lapic 3 vector 53
-uart1: fast interrupt
-uart1: PPS capture mode: DCD

does this help?
cheers,
	danny


>> 
>> -- 
>> pi@FreeBSD.org         +49 171 3101372                  Now what ?
>