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Date:      Fri, 6 Aug 2010 12:06:41 +0530
From:      waynegong L <waynegong83@gmail.com>
To:        "Jayachandran C." <c.jayachandran@gmail.com>
Cc:        freebsd-mips@freebsd.org
Subject:   Re: HEADSUP : n64 changes in HEAD.
Message-ID:  <AANLkTi=xnCRZPdM8b0kwLjSM_0RPMLf2D2wZp%2BHgFFYy@mail.gmail.com>
In-Reply-To: <AANLkTikiTun2GXNnLs%2BwftBBJqjaMr73CXGghbgcLkW5@mail.gmail.com>
References:  <AANLkTimykzp%2Bv-x1V_u%2Bp3Q9BUW=vdbv84D0e%2BTwJ1Em@mail.gmail.com> <AANLkTimXKCPUWvmitNADEakCRxDks51Bd3-0MqhR=kwb@mail.gmail.com> <AANLkTikiTun2GXNnLs%2BwftBBJqjaMr73CXGghbgcLkW5@mail.gmail.com>

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Jayachandran,

Please see my reply inline.

On Thu, Aug 5, 2010 at 7:43 PM, Jayachandran C. <c.jayachandran@gmail.com>wrote:

> On Thu, Aug 5, 2010 at 6:43 PM, waynegong L <waynegong83@gmail.com> wrote:
> > Hi Jayachandran,
> >
> > I have been waiting for n64 support and happy to see this mail.
> > But unfortunately i got a panic with the from HEAD(revision 210854) on my
> > octeon board. Please find the information below.
> > I have built rootfs in to the kernel and the rootfs is stripped one with
> 30M
> > size. Also SMP support is disabled in the config file.
>
> As i am building for OCTEON board, my config file OCTEON1 has the
respective options

options         ISA_MIPS64
makeoptions     LDSCRIPT_NAME=ldscript.mips.octeon1.64
makeoptions     ARCH_FLAGS="-march=octeon -mabi=64"
makeoptions     KERNLOADADDR=0xffffffff80100000


There are few other changes to the config file too, to
>
> options         ISA_MIPS64
> makeoptions     LDSCRIPT_NAME=ldscript.mips.64
> makeoptions     ARCH_FLAGS="-march=mips64 -mabi=64"
> makeoptions   KERNLOADADDR=0xffffffff80100000
>
> ideally, we should get this setup when TARGET_ABI is set, but not yet.
>
> > -----------------panic
> > info------------------------------------------------------------------
> > Trying to mount root from ufs:/dev/md0
> > warning: no time-of-day clock registered, system time will not be set
> > accurately
> > Lookup of /dev for devfs, error: 2
> > start_init: trying /sbin/init
> > panic: userret: Returning with 1 locks held.
> > KDB: enter: panic
> > [ thread pid 1 tid 100001 ]
> > Stopped at      kdb_enter+0x90: lui     at,0x0
> >
> >
> > A bit of debugging pointed has taken me to lockmgr.
> >
> > db> show alllocks
> > Process 1 (init) thread 0xc000000007926000 (100001)
> > exclusive lockmgr devfs (devfs) r = 0 (0xc000000007fb8cf0) locked @
> > /freebsd/testmainline/
> > head/sys/kern/vfs_subr.c:2101
> >
> > db> show lockedvnods
> > Locked vnodes
> >
> > db> show lock 0xc000000007fb8cf0
> >  class: lockmgr
> >  name: devfs
> >  state: XLOCK: 0xc000000007926000 (tid 100001, pid 1, "init")
> >  waiters: none
> >  spinners: none
> >
> > db> show thread 100001
> > Thread 100001 at 0xc000000007926000:
> >  proc (pid 1): 0xc000000007923000
> >  name: init
> >  stack: 0xc00000002589c000-0xc00000002589dfff
> >  flags: 0x1000004  pflags: 0
> >  state: RUNNING (CPU 0)
> >  priority: 180
> >  container lock: sched lock (0xffffffff8240a338)
> >
> >
> > db>  ps
> >   pid  ppid  pgrp   uid   state   wmesg         wchan        cmd
> >    15     0     0     0  DL      mdwait   0xc0000000080a0800 [md0]
> >    14     0     0     0  DL      -        0xffffffff82404eb4 [schedcpu]
> >    13     0     0     0  DL      sdflush  0xffffffff825b00c8
> [softdepflush]
> >     9     0     0     0  DL      syncer   0xffffffff825ac2a0 [syncer]
> >     8     0     0     0  DL      vlruwt   0xc0000000080a9448 [vnlru]
> >     7     0     0     0  DL      psleep   0xffffffff825abe50 [bufdaemon]
> >     6     0     0     0  RL                                  [pagezero]
> >     5     0     0     0  DL      psleep   0xffffffff825b0e8c [pagedaemon]
> >    12     0     0     0  DL      -        0xffffffff82404eb4 [yarrow]
> >     4     0     0     0  DL      -        0xffffffff82401950 [g_down]
> >     3     0     0     0  DL      -        0xffffffff82401948 [g_up]
> >     2     0     0     0  DL      -        0xffffffff82401938 [g_event]
> >    11     0     0     0  WL      (threaded)                  [intr]
> > 100015                   I                                   [swi0: uart
> > uart]
> > 100014                   I                                   [swi5: +]
> > 100012                   I                                   [swi6: task
> > queue]
> > 100011                   I                                   [swi6: Giant
> > taskq]
> > 100005                   I                                   [swi3: vm]
> > 100004                   I                                   [swi1:
> netisr
> > 0]
> > 100003                   I                                   [swi4:
> clock]
> >    10     0     0     0  RL                                  [idle]
> >     1     0     0     0  RL      CPU 0                       [init]
> >     0     0     0     0  DLs     (threaded)                  [kernel]
> > 100017                   D       deadlkre 0xffffffff82404eb4 [deadlkres]
> > 100016                   D       -        0xc0000000079b4380 [octe taskq]
> > 100013                   D       -        0xc000000007972e00 [kqueue
> taskq]
> > 100010                   D       -        0xc000000007955500 [thread
> taskq]
> > 100000                   D       sched    0xffffffff824019c8 [swapper]
> >
> > My env is as below.
> > TARGET=mips
> > TARGET_ABI=n64
> > TARGET_CPUTYPE=mips64
> > TARGET_BIG_ENDIAN=y
> >
> > My kernel build was successful, Also buildworld/install world was done
> with
> > the below components as suggested.
> > -DWITHOUT_CDDL -DWITHOUT_USB -DWITHOUT_BLUETOOTH
> >
> > Please let me know if you need any more info.
>
> `show registers' output will be good, but I think the kernel is still
> not 64 bit, so the 64 bit userspace crashed.
>

db> show reg
at          0xffffffff82410000  sysctl__debug_witness_children+0x26d8
v0                0x12  _DYNAMIC_LINKING+0x11
v1                0x12  _DYNAMIC_LINKING+0x11
a0                   0
a1                 0xa  _DYNAMIC_LINKING+0x9
a2          0xffffffff825d1fe0
a3               0x109  _DYNAMIC_LINKING+0x108
t0                   0
t1                   0
t2                   0
t3                   0
t4          0xc000000007987638
t5                   0
t6                   0
t7                   0
s0          0xffffffff80408ab0
s1          0xc000000007926000
s2          0xc00000002589dd30
s3          0xc000000007923000
s4                0x22  _DYNAMIC_LINKING+0x21
s5          0xc000000007926000
s6          0xc000000007927c80
s7                 0x1  _DYNAMIC_LINKING
t8                   0
t9          0x120004da0
k0                   0
k1                 0xa  _DYNAMIC_LINKING+0x9
gp          0xffffffff82405684  _gp
sp          0xc00000002589db70
s8                 0x1  _DYNAMIC_LINKING
ra          0xffffffff801ffd64  kdb_enter+0x74
sr          0x408084e3
lo                   0
hi              0x111d  _DYNAMIC_LINKING+0x111c
bad         0xc0000000079ac600
cs                0x24  _DYNAMIC_LINKING+0x23
pc          0xffffffff801ffd80  kdb_enter+0x90
kdb_enter+0x90: lui     at,0x0


Please let me know if u need any more info.

Thanks,
wayne.


>
> JC.
>



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