There is also the SPCR table
https://docs.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table?redirectedfrom=MSDN
This is the primary serial console
From: boot-architecture <boot-architecture-boun...@lists.linaro.org> on behalf
of François Ozog <francois.o...@linaro.org>
Date: Monday, January 18, 2021 at 2:43 PM
To: Grant Likely <grant.lik...@arm.com>
Cc: Jeff Booher-Kaeding <jeff.booher-kaed...@arm.com>, Samer El-Haj-Mahmoud
<samer.el-haj-mahm...@arm.com>, mbrug...@suse.com <mbrug...@suse.com>, Jose
Marinho <jose.mari...@arm.com>, s...@google.com <s...@google.com>,
bill.mi...@linaro.org <bill.mi...@linaro.org>,
boot-architecture@lists.linaro.org <boot-architecture@lists.linaro.org>,
takahiro.aka...@linaro.org <takahiro.aka...@linaro.org>, nd <n...@arm.com>,
Mark Brown <mark.br...@arm.com>, ati...@atishpatra.org <ati...@atishpatra.org>,
joakim.b...@linaro.org <joakim.b...@linaro.org>, daniel.thomp...@linaro.org
<daniel.thomp...@linaro.org>, d...@suse.de <d...@suse.de>, Reed Hinkel
<reed.hin...@arm.com>
Subject: Re: EBBR Biweekly for 18 Jan 2021
Hi
During the call you mentioned that SBBR had some defined values for console.
I can only find that the _HID="ARMH0011" identifies a SBSA com port but I
don't find any standard object path that would point to the UART to use.
let's assume:
Device (COM0)
{
Name (_HID, "ARMH0011") // _HID: Hardware ID
Name (_UID, Zero) // _UID: Unique ID
Name (_CRS, ResourceTemplate () // _CRS: Current Resource
Settings
{
Memory32Fixed (ReadWrite,
0x09000000, // Address Base
0x00001000, // Address Length
)
Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive,
,, )
{
0x00000021,
}
})
Name (_ADR, 0x09000000) // _ADR: Address
}
Device (COM1)
{
Name (_HID, "ARMH0011") // _HID: Hardware ID
Name (_UID, One) // _UID: Unique ID
Name (_CRS, ResourceTemplate () // _CRS: Current Resource
Settings
{
Memory32Fixed (ReadWrite,
0x09002000, // Address Base
0x00001000, // Address Length
)
Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive,
,, )
{
0x00000022,
}
})
Name (_ADR, 0x09002000) // _ADR: Address
}
Which port to use as a console?
by definition we could say that \_SB_.COM0 is the port to use.
Or we could define \_SB_.SOUT as a reference object to any of the defined
UARTs.
Cheers
FF
On Mon, 18 Jan 2021 at 16:32, Grant Likely <grant.lik...@arm.com> wrote:
>
>
> On 17/01/2021 15:01, François Ozog wrote:
> > Hi Grant
> >
> > I’d like EBBR to specify a solution to identify the default serial
> > console out of existing optional indications.
>
> Hi Francois,
>
> This is a good topic. EBBR starts from the assumption that whether ACPI
> or DT is used for the system description, the data will follow the
> requirements of the technology. For ACPI I don't think we need to add
> any language, but it would be worthwhile to require stdout-path is
> specified in the DT. Do you want to propose some language?
>
> > On DT systems , we shall state that /chosen/stdout-path must point to a
> > valid path.
> >
> > On ACPI, we may get the info form \_SB_.COM0 @ DSDT or specify we will
> > get the info from SPCR table. >
> > Regardless of the method , this is required to just boot and do not have
> > to care about clumsy command lines with early_console or console
> parameters.
>
> Agree. Mucking with the commandline should not be required.
>
>
> > I like this topic be added to the agenda ?
>
> yes. Can you also add an issue to track this topic please?
>
> g.
>
> > Le sam. 16 janv. 2021 à 13:59, Grant Likely <grant.lik...@arm.com
> > <mailto:grant.lik...@arm.com>> a écrit :
> >
> > Hi all,
> >
> > Next EBBR meeting is ON for Monday, 18 Jan 2021 at 16:00 GMT. I think
> > there is quite a backlog of items to discuss. Here's what I've got
> for
> > the agenda so far:
> >
> > * Update on specific required protocols
> > * https://github.com/ARM-software/ebbr/issues/60
> > <https://github.com/ARM-software/ebbr/issues/60>
> > * https://github.com/ARM-software/ebbr/issues/61
> > <https://github.com/ARM-software/ebbr/issues/61>
> > * https://github.com/ARM-software/ebbr/issues/64
> > <https://github.com/ARM-software/ebbr/issues/64>
> > * Firmware update requirements
> > * https://github.com/ARM-software/ebbr/issues/69
> > <https://github.com/ARM-software/ebbr/issues/69>
> > * DT fixup protocol proposal
> > * https://github.com/U-Boot-EFI/EFI_DT_FIXUP_PROTOCOL
> > <https://github.com/U-Boot-EFI/EFI_DT_FIXUP_PROTOCOL>
> > * https://github.com/ARM-software/ebbr/issues/68
> > <https://github.com/ARM-software/ebbr/issues/68>
> > * Other business
> >
> > If you would like to discuss anything else, please reply to this
> email.
> >
> > Dial in details are here:
> >
> > ---
> >
> > Grant Likely is inviting you to a scheduled Zoom meeting.
> >
> >
> >
> > Topic: EBBR Biweekly
> >
> > Time: 18 Jan 2021, 16:00-17:00 GMT
> >
> >
> > Join Zoom Meeting
> >
> >
> https://armltd.zoom.us/j/92081365511?pwd=SFZpRitXUEp3Zy9GM0h3UUZ1b1pnUT09
> > <
> https://armltd.zoom.us/j/92081365511?pwd=SFZpRitXUEp3Zy9GM0h3UUZ1b1pnUT09>
> >
> >
> >
> > Meeting ID: 920 8136 5511
> >
> > Passcode: 490324
> >
> > One tap mobile
> >
> > +14086380968,,92081365511#,,,,*490324# US (San Jose)
> >
> > +16465189805,,92081365511#,,,,*490324# US (New York)
> >
> >
> >
> > Dial by your location
> >
> > +1 408 638 0968 US (San Jose)
> >
> > +1 646 518 9805 US (New York)
> >
> > +1 346 248 7799 US (Houston)
> >
> > Meeting ID: 920 8136 5511
> >
> > Passcode: 490324
> >
> > Find your local number: https://armltd.zoom.us/u/aelJgr9ZAW
> > <https://armltd.zoom.us/u/aelJgr9ZAW>
> >
> >
> > _______________________________________________
> > boot-architecture mailing list
> > boot-architecture@lists.linaro.org
> > <mailto:boot-architecture@lists.linaro.org>
> > https://lists.linaro.org/mailman/listinfo/boot-architecture
> > <https://lists.linaro.org/mailman/listinfo/boot-architecture>
> >
> > --
> >
> > François-Frédéric Ozog | /Director Linaro Edge & Fog Computing Group/
> > T: +33.67221.6485
> > francois.o...@linaro.org <mailto:francois.o...@linaro.org>
> | Skype: ffozog
> >
> >
>
--
François-Frédéric Ozog | *Director Linaro Edge & Fog Computing Group*
T: +33.67221.6485
francois.o...@linaro.org | Skype: ffozog
_______________________________________________
boot-architecture mailing list
boot-architecture@lists.linaro.org
https://lists.linaro.org/mailman/listinfo/boot-architecture
IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended recipient,
please notify the sender immediately and do not disclose the contents to any
other person, use it for any purpose, or store or copy the information in any
medium. Thank you.
_______________________________________________
boot-architecture mailing list
boot-architecture@lists.linaro.org
https://lists.linaro.org/mailman/listinfo/boot-architecture
