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Date:      Sun, 24 May 2015 17:12:32 -0700
From:      Oleksandr Tymoshenko <gonzo@freebsd.org>
To:        Marcel Moolenaar <marcel@xcllnt.net>
Cc:        "freebsd-arm@freebsd.org List" <freebsd-arm@freebsd.org>
Subject:   Re: panic: arm_unmask_irq [was: Re: TI platforms code update: switching to vendor FDT data]
Message-ID:  <3741A6A7-1185-4E5A-9E98-22F5A6C730DC@freebsd.org>
In-Reply-To: <72E1D87A-1CEF-4719-907E-CF8E9D720FD1@xcllnt.net>
References:  <C9791C97-D5B1-433A-9AC0-CA2707C6137F@freebsd.org> <72E1D87A-1CEF-4719-907E-CF8E9D720FD1@xcllnt.net>

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> On May 24, 2015, at 5:05 PM, Marcel Moolenaar <marcel@xcllnt.net> =
wrote:
>=20
>=20
>> On May 21, 2015, at 8:37 PM, Oleksandr Tymoshenko <gonzo@FreeBSD.org> =
wrote:
>>=20
>> Hello,
>>=20
>> I've just committed (r283276) major code update for TI platforms
>> support. It gets rid of custom-baked .dts files for
>> Beaglebone/Pandaboard and switches to using FDT data provided by
>> TI and/or boards/capes manufacturers.
>=20
> *snip*
>=20
> It seems the interrupt controller isn=E2=80=99t been probed and =
attached
> in time on my BBB:
>=20
> Booting [/boot/kernel/kernel]...
> Using DTB provided by U-Boot at address 0x80000100.
> Kernel entry at 0x80200100...
> Kernel args: (null)
> KDB: debugger backends: ddb
> KDB: current backend: ddb
> Copyright (c) 1992-2015 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, =
1994
> 	The Regents of the University of California. All rights =
reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 11.0-CURRENT #1 r283321M: Sun May 24 16:58:54 PDT 2015
>    marcel@fbsdvm64:/usr/obj/arm.armv6/host/head/sys/BEAGLEBONE arm
> FreeBSD clang version 3.6.0 (tags/RELEASE_360/final 230434) 20150225
> WARNING: WITNESS option enabled, expect reduced performance.
> can't re-use a leaf (geom_label)!
> module_register: module g_label already exists!
> Module g_label failed to register: 17
> CPU: Cortex A8-r3 rev 2 (Cortex-A core)
> Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext
> WB disabled EABT branch prediction enabled
> LoUU:2 LoC:3 LoUIS:1
> Cache level 1:
> 32KB/64B 4-way data cache WT WB Read-Alloc
> 32KB/64B 4-way instruction cache Read-Alloc
> Cache level 2:
> 256KB/64B 8-way unified cache WT WB Read-Alloc Write-Alloc
> real memory  =3D 536870912 (512 MB)
> avail memory =3D 513081344 (489 MB)
> Texas Instruments AM335x Processor, Revision ES1.2
> random: entropy device infrastructure driver
> random: selecting highest priority adaptor <Dummy>
> random: SOFT: yarrow init()
> random: selecting highest priority adaptor <Yarrow>
> ofwbus0: <Open Firmware Device Tree>
> simplebus0: <Flattened device tree simple bus> on ofwbus0
> am335x_rtc0: <AM335x RTC (power management mode)> mem =
0x44e3e000-0x44e3efff irq 75,76 on simplebus0
> am335x_rtc0: AM335X RTC v1.0.6
> ti_wdt0: <TI Watchdog Timer> mem 0x44e35000-0x44e35fff irq 91 on =
simplebus0
> Fatal kernel mode data abort: 'Translation Fault (L1)' on read
> trapframe: 0xc090ac68
> FSR=3D00000005, FAR=3D00000010, spsr=3Da0000193
> r0 =3D0000001b, r1 =3D00000001, r2 =3Dc2952e48, r3 =3D08000000
> r4 =3D00000040, r5 =3D00000000, r6 =3D0000005b, r7 =3D00000310
> r8 =3Dc2ae11c0, r9 =3Dc0605974, r10=3D00000000, r11=3Dc090ad00
> r12=3Dc0788b34, ssp=3Dc090acf8, slr=3Dc05f72a8, pc =3Dc05f72b8
>=20
> [ thread pid 0 tid 100000 ]
> Stopped at      arm_unmask_irq+0x30:    ldr     r0, [r5, #0x010]
> db>
>=20
>=20
> I=E2=80=99ll poke at it some more, so for now it=E2=80=99s an FYI.

ti_scm and ti_pinmux should be detected right after simplebus.
Could you make sure if dtb loaded by u-boot is not
from previous builds? You can decompile it using dtc:
dtc -I dtb -O dts beaglebone-black.dtb





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