Subject: MPC8245+2.6.12=oops

From: "Carl Ljungmark" <[email-masked]>
Date: Tue, 02 Aug 2005 10:44:00 +0200

Hello everyone!
Trying to boot linux 2.6.12 on an MPC8245 board from MEN (a12) with MenMon  
firmware. Nothing is printed to the console (ttyS0), but the __log_buf  
contains this:

<4>entering platform_init.
<4>MENMON parameter string: MPAR brd=A012a brdrev=01.04.00 brdmod=00  
sernbr=74 cbr=38400 cons=COM1 mem0=262144 cpu=MPC8245 cpuclk=250memclk=100  
vmeirqenb=FEclun=02dlun=00 mm=smm  
MMST=_00+_12+_1B+_1C+_0C+_17+_1A+_1D+_1E-SPD+RTC+LM75+WDOG+CHKS+ALL+.
<4>Command line now console=ttyS0,38400.
<4>Using memory size from MENMON 0x10000000.
<3>Non-recoverable exception at PC=c0007af0 MSR=b930.
<4>Oops: nonrecoverable exception,sig: 9 [#1].
<4>NIP: C0007AF0 LR:C000E474 SP: C00F7F70 REGS: c00f7ec0 TRAP: 0600 Not  
tainted.
<4>MSR: 0000b930 EE: 1 PR: 0 FP:1 ME: 1 IR/DR:11.
<4>DAR: C0138000, DSISR: 00017C00.
<4>TASK = c00dda10[0] 'swapper' THREAD: c00f6000.
<4>Last syscall: 0 .
<6>GPR00: 00000080 C00F7F70 C00DDA10 C0138000 0000000000001000 00000001  
00000001 .
<6>GPR08: 0000000200000000 00000001 00000000 00000000 00000000 00008081  
2A090A86 .
<6>GPR16: 10588403 1E21D063 21218986 50022502 3C0185B8 011368CA00FFF010  
00FFF024 .
<6>GPR24: 00000000 01F8FA68 40000000 C00DC000000005A9 FD000000 FD000000  
C0138000 .
<4>NIP [c0007af0] clear_pages+0x10/0x1c.
<4>LR [c000e474] pte_alloc_one_kernel+0x60/0x78.
<4>Call trace:.
<4> [c003e948] pte_alloc_kernel+0x54/0x84.
<4> [c000e5e4] map_page+0x3c/0xdc.
<4> [c00ff61c] io_block_mapping+0x78/0xdc.
<4> [c00fe560] men824xali_map_io+0x20/0x44.
<4> [c00fec38] MMU_init+0x194/0x204.
<4> [c00032a4]start_here+0x48/0x80.
0>Kernelpanic - not syncing: Attempted to kill the idletask!.
<4> ......

adding 'nobats' to the command line changes the boot output slightly (I  
then get two oops).

In order to get the whole output I had to turn off caching, maybe this has  
influenced the boot process.. with dcache on, the __log_buf is practically  
empty.

Has anyone managed to boot 6.12 on this board successfully?

Thanks in advance,
Carl.