Re: PPC 750 booting... exception

At 07:54 PM 9/20/01 -0700, Prasad, Siva wrote:

Hi,

I am trying to boot custom board with PPC 750.

* I tftp'd the zImage into the target and when I give "go" command, it
gives
exception error. I can't understand what is going on. Below are the copy
paste of it. I am using "powerboot" as the boot loader.

- When I got the kernel from bk source (or from HHL 1.2), I had to
explicitly say "n" to CONFIG_FB in arch/ppc/config.in. If not, I was
getting
compilations errors. Does this has any thing to do with booting.

- I also tried with HHL 1.2 version (kernel 2.2.14). I was having the same
problem of exception there also.

* I know this is a basic question...
What is "Prep" and "Chrp". zImage built had these two suffixes to it.

Can some one please help me out.

Thanks in advance.

PowerBoot> netload zImage 400000 10.149.4.228 10.149.4.28
 Ethernet controller diagnostics...pass
 Init Ethernet Controller MII-Port and PHY-Device
 PHY-Device at 100MB/s negotiated
 LAN-controller at address FE880000 set to Ethernet 12:00:34:23:56:45
 Transmitting ARP-REQUEST... Reception of ARP-REPLY
 Transmitting TFTP-REQUEST to server 00:60:08:5A:F0:AC, IP 10.149.4.28
 PACKET:1080 - loaded $00400000..$00486E65 (552550 bytes)

PowerBoot> go 400000

exception occured: 0x700
SRR0 = 0x00400000
SRR1 = 0x0008B030
MSR  = 0x00000030
DAR  = 0x00000000
HID0 = 0x8010C004
HID1 = 0x70000000
L2CR = 0xBD080000
*** Program Exception ***
PowerBoot>

-- Siva

srr0 holds the address of the instruction where you resume after
handling an exception (if possible :-).  In this case, it is the target
of your "go" instruction.  You are dead before you (successfully)
executed one instruction.  Disassemble the instructions at location
0x400000.  Check that that location holds the values that you think you
loaded and that the load file makes sense (if your PowerBoot doesn't
disassemble, disassemble the loadable file on your host).

gvb

******************** Lawyer gibberish: ********************


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