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Date:      Sat, 1 Feb 2020 20:28:53 -0800
From:      Mark Millard <marklmi@yahoo.com>
To:        Andreas Tobler <andreast-list@fgznet.ch>
Cc:        freebsd-arm <freebsd-arm@freebsd.org>, "jeff@freebsd.org" <jeff@FreeBSD.org>, Kyle Evans <kevans@FreeBSD.org>, =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com>
Subject:   Re: head -r357356: fails to boot RPi4 but boots Rock64 (same media, moved between machines); -r356426 booted both
Message-ID:  <78694513-66DE-4616-91C0-896D99C97B33@yahoo.com>
In-Reply-To: <62250B30-E1F6-470D-BB84-F9565D063A06@yahoo.com>
References:  <63205335-8E8A-4CCB-BC80-E4EC767FBC09.ref@yahoo.com> <63205335-8E8A-4CCB-BC80-E4EC767FBC09@yahoo.com> <e083e017-af5a-e219-3a3c-bc82b16c6027@fgznet.ch> <62250B30-E1F6-470D-BB84-F9565D063A06@yahoo.com>

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[head -r357392 made no difference in the failure sequence
for booting the RPi4B.]

On 2020-Feb-1, at 16:11, Mark Millard <marklmi at yahoo.com> wrote:



> On 2020-Feb-1, at 14:25, Andreas Tobler <andreast-list at fgznet.ch> =
wrote:
>=20
>> On 01.02.20 12:58, Mark Millard via freebsd-arm wrote:
>>> I had a working head -r356426 based microSD card that booted
>>> both the Rock64 and the RPi4.
>>> I upgraded it to be based on head -r357356 .
>>> Now the RPi4B hangs up during boot and does not start its APs.
>>> But the Rock64 boots fine via the same media.
>>> Diffing RPi4B console logs for -r356426 vs. -r357356 shows
>>> -r357356 shw the following as the only types of
>>> textual differences:
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> device_attach: psci0 attach returned 6
>>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>>> psci0: PSCI version number mismatched with DT
>>> (More blocks of 3 such lines at a time happen later as well.)
>>=20
>> I see the same on a rpi3b+. Try r356775, r356776 is the breaking =
commit for me.

I still get the above sort of thing from -r357392
(non-debug kernel, as I usually run).

I also still get "APs not started" and the like.

The fix seems to have made no difference for this issue.
If -r356775 really works, then there is more to the
-r356776 story.

> Looks like head -r357392 is an intended fix
> to head -r356776 :
>=20
> Author: jeff
> Date: Sat Feb  1 23:46:30 2020
> New Revision: 357392
> URL:=20
> https://svnweb.freebsd.org/changeset/base/357392
>=20
>=20
> Log:
>  Fix a bug in r356776 where the page allocator was not properly =
restored to
>  the percpu page allocator after it had been temporarily overridden by
>  startup_alloc.
>=20
>  Reported by:	pho, bdragon
>=20
> Modified:
>  head/sys/vm/uma_core.c
>=20
> Modified: head/sys/vm/uma_core.c
> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> --- head/sys/vm/uma_core.c	Sat Feb  1 23:16:30 2020	=
(r357391)
> +++ head/sys/vm/uma_core.c	Sat Feb  1 23:46:30 2020	=
(r357392)
> @@ -2101,7 +2101,9 @@ zone_kva_available(uma_zone_t zone, void =
*unused)
> 	if ((zone->uz_flags & UMA_ZFLAG_CACHE) !=3D 0)
> 		return;
> 	KEG_GET(zone, keg);
> -	if (keg->uk_allocf =3D=3D startup_alloc)
> +	if (keg->uk_flags & UMA_ZONE_PCPU)
> +		keg->uk_allocf =3D pcpu_page_alloc;
> +	else if (keg->uk_allocf =3D=3D startup_alloc)
> 		keg->uk_allocf =3D page_alloc;
> }
>=20
>=20
> I'll probably try it later today sometime.
>=20

I tried -r357392 for the RPi4B boot issue, but it
was not a solution.

The fix may well be a solution to some other
issue(s).

=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)




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