MBX860 loading denx kernel image with EPPC-Bug

MBX860 loading denx kernel image with EPPC-Bug

[Amit.Lubovsky]

Hi,

I try to load linux kernel 2.4.20 from denx (vmlinux) to MBX860 board
with the on board boot loader (EPPC-Bug) without success and get
the following:

EPPC-BUG output
---------------
Controller LUN =00? 20
Device LUN =00?
Node Control Memory Address =00FC8000?
Client IP Address =192.168.5.34?
Server IP Address =192.168.5.1?
Subnet IP Address Mask =255.255.255.0?
Broadcast IP Address =255.255.255.255?
Gateway IP Address =192.168.5.1?
Boot File Name ("NULL" for None) =vmlinux?
Argument File Name ("NULL" for None) =?
Boot File Length =00000000?
Boot File Byte Offset =00000000?
BOOTP/RARP Request Retry =02?
TFTP/ARP Request Retry =02?
Trace Character Buffer Address =00000000?
BOOTP/RARP Request Control: Always/When-Needed (A/W)=W?
BOOTP/RARP Reply Update Control: Yes/No (Y/N) =Y?

Update Non-Volatile Memory (Y/N)? y

EPPC-Bug>PL 20 00
Network Booting from: MPC860, Controller 20, Device 0
Loading: vmlinux

Client IP Address = 192.168.5.34
Server IP Address = 192.168.5.1
Gateway IP Address = 192.168.5.1
Subnet IP Address Mask = 255.255.255.0
Boot File Name = vmlinux
Argument File Name =

Bytes Received =&1338333, Bytes Loaded =&1338333
Bytes/Second =&446111, Elapsed Time =3 Second(s)

Exception: Implementation Dependent Software Emulation
SRR0 =C0000000 SRR1 =00001002 Vector-Offset =01000
IP =C0000000 MSR =00001002 CR =00000000
R0 =00000000 R1 =00FB4000 R2 =00000000 R3 =00FF4570
R4 =00000000 R5 =00000000 R6 =00000000 R7 =00000000
R8 =00000000 R9 =00000000 R10 =00000000 R11 =00000000
R12 =00000000 R13 =00000000 R14 =00000000 R15 =00000000
R16 =00000000 R17 =00000000 R18 =00000000 R19 =00000000
R20 =00000000 R21 =00000000 R22 =00000000 R23 =00000000
R24 =00000000 R25 =00000000 R26 =00000000 R27 =00000000
R28 =00000000 R29 =00000000 R30 =00000000 R31 =00000000
SPR1 =00000000 SPR8 =00000000 SPR9 =00000000
C0000000 0A0A0A0A TDI $10,R10,$A0A
EPPC-Bug>
Any idea what am I doing wrong?
Thanks,
Amit.


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Re: MBX860 loading denx kernel image with EPPC-Bug

[Wolfgang Denk]

Dear Amit,

in message <AD2F581BD7340A4C908AF1AFB066EA3B0E4977@ntah901e.savan.com> you wrote:
>
> I try to load linux kernel 2.4.20 from denx (vmlinux) to MBX860 board
> with the on board boot loader (EPPC-Bug) without success and get
> the following:
...
> Any idea what am I doing wrong?

You are using the wrong boot loader and/or the wrong image.

vmlinux is just the Linux kernel -  it  expects  to  receive  certain
parameters  in  registers,  and boot arameters in a command line. The
EPPCBug boot loader does not know anything about Linux, so the kernel
crashes because of missing / bad parameters.

Either you will have to use a boot loader that knows about Linux  and
the  parameters  needed  to boot it (like U-Boot), or you could use a
wrapper (bootstrap loader) around the Linux kernel like what you  get
when you use the arch/ppc/boot/images/zImage file.

Best regards, and Happy Hollidays,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"We don't have to protect the environment -- the Second Coming is  at
hand."                                                   - James Watt

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