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APU2 v4.9.0.5

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    Andriy - Posted May 22nd

    I have upgarde my APU2C4 from factory flashed 4.0.7 to 4.9.0.5 and I noticed that device COM1 has been removed from ACPI namespace.

    Just curious what was a reason for that.

    Previously the port was auto-configured via ACPI. Now I have to provide configuratons hints for it (on FreeBSD, via device.hints).

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    miczyg - Posted May 23rd

    Interesting...

    I will look into v4.0.7 codebase and check whether it has been removed in the midway to v4.9.0.5.

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    Andriy - Posted May 23rd

    Thank you!

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    miczyg - Posted May 24th

    Andriy

    I have implemented the serial ports in ACPI however I see no difference between v4.0.7 or current v4.9.0.5 with serial described in ACPI.

    I am using FreeBSD 12.0 RELEASE installer and it just hangs at `Can't find /boot/entropy`

    Any guidelines on how can I reproduce the situation where I do not have to configure the port? Would be appreciated.

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    Andriy - Posted May 24th

    Hmm, that's bad. I personally didn't have that problem, but my first boot was over the network (PXE) and I used FreeBSD 13.

    Are you booting from USB? Maybe try 11.2 instead of 12.0 ...

     

    Regarding the configuration: remove all uart lines from /boot/device.hints and see if any uart devices get detected.

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    miczyg - Posted May 24th

    OK I need to set those explicitly either way in loader prompt:

    set boot_multicons=YES
    set boot_serial=YES
    set comconsole_speed=115200
    set console=comconsole

    and then the kernel log shows:

    uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
    uart0: console (115200,n,8,1)
    uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0

    which I assume is correct. However I suspect this is not the goal we wanted to achieve.


    Post last edited May 24th
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    Andriy - Posted May 24th

    It looks good to me. "on acpi0" means that uart was detected via the ACPI device.

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    miczyg - Posted May 24th

    Fine, as long as it suits You.

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