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Date:      Fri, 6 Jan 2023 05:41:36 +0100
From:      =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com>
To:        Mark Millard <marklmi@yahoo.com>, "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, freebsd-arm@freebsd.org
Subject:   Re: (RPi) db> reboot -> cpu_reset failed [Klus's crash]
Message-ID:  <650C4A06-1205-489A-B69A-0BB657F1C0E5@googlemail.com>
In-Reply-To: <894C0DAA-A199-434A-A5D7-C4BB1FBC5BEC@yahoo.com>
References:  <29q7q878-091-r17n-8r3n-o3n68p3646@mnoonqbm.arg> <F4435E57-1F90-454D-8E75-01DF50DD37DA@googlemail.com> <np4qps4-2o34-3n9n-q4s4-4931p4s7p13@yvfgf.mnoonqbm.arg> <38B92299-2776-476D-A81F-7C8EB4D59A13@googlemail.com> <894C0DAA-A199-434A-A5D7-C4BB1FBC5BEC@yahoo.com>

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Mark, thanks for the detailed hints !

I will investigate in that firmware issues/your suggested patch,=20
and will report back later.

Regards

K.


> Am 05.01.2023 um 21:43 schrieb Mark Millard <marklmi@yahoo.com>:
>=20
> On Jan 5, 2023, at 11:32, Klaus K=C3=BCchemann =
<maciphone2@googlemail.com> wrote:
>=20
>> Hi Bj=C3=B6rn,
>> ( ..I had a JTAG setup on the PI, but didn=E2=80=99t use it for some =
time..)
>>=20
>> yes that was a  "live=E2=80=9C boot example from today of the cm4(on =
orig. I/O-board),
>> it hangs while initializing sdhci, while the boot partition is living =
on the emmc :
>> =E2=80=94
>>=20
>> sdhci_bcm0: <Broadcom 2708 SDHCI controller> mem =
0x7e300000-0x7e3000ff irq 24 on simplebus0
>> Fatal data abort:
>> x0:         ffffffff
>> x1: ffff00000092b404
>> x2:                0
>> x3:                6
>> x4: ffff000000fdf77c
>> x5: ffff000000fdf72c
>> x6:          4000000
>> x7:          4000000
>> x8: ffff000000dfb6a0
>> x9:               20
>> x10:                0
>> x11:                1
>> x12:  300000000006e65
>> x13:   fefefefeff0100
>> x14:               1d
>> x15:                0
>> x16:                0
>> x17:                0
>> x18: ffff000000fdf7e0
>> x19:         ffffffff
>> x20:                0
>> x21: ffff000000bad000
>> x22: ffff000000bad000
>> x23: ffffa00000f8f038
>> x24: ffff00000091b5b2
>> x25: ffff0000008dfc9c
>> x26: ffff0000009436b6
>> x27: ffffa00000f8b140
>> x28:         32000000
>> x29: ffff000000fdf7e0
>> sp: ffff000000fdf7e0
>> lr: ffff000000868040
>> elr: ffff0000008620d4
>> spsr:         a00000c5
>> far:               20
>> esr:         96000004
>> panic: vm_fault failed: ffff0000008620d4
>> cpuid =3D 0
>> time =3D 1
>> KDB: stack backtrace:
>> #0 0xffff000000516458 at kdb_backtrace+0x60
>> #1 0xffff0000004c24ac at vpanic+0x174
>> #2 0xffff0000004c2334 at panic+0x44
>> #3 0xffff0000007f48c0 at data_abort+0x204
>> #4 0xffff0000007d5010 at handle_el1h_sync+0x10
>> #5 0xffff00000086803c at bcm_sdhci_attach+0x314
>> #6 0xffff00000086803c at bcm_sdhci_attach+0x314
>> #7 0xffff000000502428 at device_attach+0x3fc
>> #8 0xffff000000504514 at bus_generic_new_pass+0x120
>> #9 0xffff0000005044a4 at bus_generic_new_pass+0xb0
>> #10 0xffff0000005044a4 at bus_generic_new_pass+0xb0
>> #11 0xffff0000005044a4 at bus_generic_new_pass+0xb0
>> #12 0xffff0000005065f4 at root_bus_configure+0x40
>> #13 0xffff000000439ee8 at mi_startup+0x11c
>> #14 0xffff0000000008b4 at virtdone+0x78
>> Uptime: 1s
>>=20
>=20
> You are using modern enough RPI* firmware that the FreeBSD
> kernel does not tolerate it. Same sort of backtrace as I
> reported back in 2022-Apr when I explored what RPi*
> firmware releases avoided kernel crashes on RPi4B's,
> such as:
>=20
> KDB: stack backtrace:
> #0 0xffff000000516268 at kdb_backtrace+0x60
> #1 0xffff0000004c22bc at vpanic+0x174
> #2 0xffff0000004c2144 at panic+0x44
> #3 0xffff0000007f4928 at data_abort+0x204
> #4 0xffff0000007d5010 at handle_el1h_sync+0x10
> #5 0xffff00000086809c at bcm_sdhci_attach+0x314
> #6 0xffff00000086809c at bcm_sdhci_attach+0x314
> #7 0xffff000000502238 at device_attach+0x3fc
> #8 0xffff000000504324 at bus_generic_new_pass+0x120
> #9 0xffff0000005042b4 at bus_generic_new_pass+0xb0
> #10 0xffff0000005042b4 at bus_generic_new_pass+0xb0
> #11 0xffff0000005042b4 at bus_generic_new_pass+0xb0
> #12 0xffff000000506404 at root_bus_configure+0x40
> #13 0xffff000000439cf8 at mi_startup+0x11c
> #14 0xffff0000000008b4 at virtdone+0x78
>=20
> In:
>=20
> =
https://lists.freebsd.org/archives/freebsd-arm/2022-December/002115.html
>=20
> I reported what I'm experimenting with (2nd version) for 13.1 and
> main for allowing modern RPi* firmware. It basically leads to
> bcm_dma being set up earlier so it is available for reference in
> the bcm_sdhci_attach activity.
>=20
> If you build your own kernel with the type of patching that
> I report, the specific crash should disappear and booting
> with modern RPi* firmware seems to have worked for me so
> far on the machines I've done the experimenting on.
>=20
> Expect more messages caused by new things in the .dtb files
> that the kernel does not support but keeps rechecking during
> boot. Sort of a noisy form of otherwise-ignored.
>=20
> =3D=3D=3D
> Mark Millard
> marklmi at yahoo.com





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