FreeBSD in Pandaboard panics in boot

[Warner Losh]

I'm having big issues with WITNESS. Also the stack traceback code is busterated lately, so try gcc instead of clang.

Warner

On Apr 19, 2013, at 4:35 AM, Pablo Ribalta Lorenzo wrote:

> Hi guys,
> 
> I'm trying to boot FreeBSD over Pandaboard for one of my projects, but I'm stuck with an issue that it's blocking me and
> I'd like to see if someone can provide some insight.
> 
> My setup goes as it follows:
> ============================
> 
> - Pandaboard with SD card.
> 
> - SD card correctly formated:
> 
> 	First partition:
> 		o U-Boot
> 		o MLO
> 		o FreeBSD kernel image
> 
> - FreeBSD kernel image was built from:
> 	o SVN Revision: 248896
> 	o Using: make buildkernel TARGET_ARCH=arm CPUTYPE=armv6 KERNCONF=PANDABOARD -j5 -DCLANG_IS_CC=no
> 
> - U-Boot and MLO were built from:
> 	o origin: git://git.linaro.org/boot/u-boot-linaro-stable.git
> 	o Commit ID: 30dd996a40c7673258bd5743c0813230d92abc7c
> 
> 
> The problem is the following:
> =============================
> 
> When Pandaboard is reseted I stop the autoboot and try to load the kernel image from tftpboot, which succeeds. However, when I
> try to run it in the address where it's loaded, it panics right at the beginning of the kernel boot.
> 
> I also tried booting the kernel from the SD card, with identical result. Also with different versions from the source tree,
> and I always get the same panic in the same place.
> 
> Am I doing something wrong? Maybe somebody can give me a hand.
> 
> 
> Here are some logs of what I see:
> =================================
> 
> /Panda # tftpboot 0x80200000 users/rlp/pandaboard/kernel.bin
> Waiting for Ethernet connection... done.
> Using sms0 device
> TFTP from server 10.2.0.1; our IP address is 10.2.0.98
> Filename 'users/rlp/pandaboard/kernel.bin'.
> Load address: 0x80200000
> Loading: #################################################################
> 	 #################################################################
> 	 #################################################################
> 	 #################################################################
> 	 #######################################
> done
> Bytes transferred = 4380644 (42d7e4 hex)
> Panda # go 0x80200000
> ## Starting application at 0x80200000 ...
> KDB: debugger backends: ddb
> KDB: current backend: ddb
> Copyright (c) 1992-2013 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 10.0-CURRENT #2 r+8cd94da: Thu Apr 18 16:23:24 CEST 2013
>    rlp at gilgamesh.semihalf.com:/home/rlp/obj-superpages/arm.arm/home/rlp/freebsd-arm-superpages/sys/PANDABOARD arm
> FreeBSD clang version 3.2 (tags/RELEASE_32/final 170710) 20121221
> CPU: Cortex A9-r1 rev 2 (Cortex-A core)
> Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext
> WB disabled EABT branch prediction enabled
> LoUU:2 LoC:1 LoUIS:2
> Cache level 1:
> 32KB/32B 4-way data cache WB Read-Alloc Write-Alloc
> 32KB/32B 4-way instruction cache Read-Alloc
> real memory  = 1073741824 (1024 MB)
> avail memory = 1034764288 (986 MB)
> panic: Cannot allocate L1 KVM
> KDB: enter: panic
> [ thread pid 0 tid 0 ]
> Stopped at      kdb_enter+0x48: ldrb    r15, [r15, r15, ror r15]!
> db> bt
> Tracing pid 0 tid 0 td 0xc064b460
> _end() at 0xc0660b34
> scp=0xc0660b34 rlv=0xc054e78c (db_trace_thread+0x34)
>        rsp=0xc0660b18 rfp=0xc064a4fc
> Bad frame pointer: 0xc064a4fc
> db>//
> /
> 
> -- 
> Pozdrawiam,
> Pablo Ribalta Lorenzo
> 
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