debugging using BDI2000 on MPC860

debugging using BDI2000 on MPC860

[Stephan Linke]

Hi,

I want to use our BDI2000 to debug my MPC860 board. Unfortunately it always stops with a machine check interrupt at 0x00000100.
Flashing works fine.
Our flash is at 0xff000000, IMMR at f0000000...

Any ideas? How do I define the boot address in MPC860 config files.

Thanks, Stephan


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RE: debugging using BDI2000 on MPC860

[Stephan Linke]

Hi Shen,

Thanks for your response,

I don't know how to interprete this but it always stops with the following status:

    Target state      : debug mode
    Debug entry cause : machine check interrupt
    Current PC        : 0x00000100
    Data  address     : 0x00000000
    DSISR value       : 0x00000000

Regards, Stephan

> -----Original Message-----
> From: Shen Rong [mailto:rshen@udtech.com.cn]
> Sent: Montag, 16. Juni 2003 13:03
> To: Stephan Linke
> Subject: Re: debugging using BDI2000 on MPC860
>
>
> Machine check exception vector is located at 0x200.
> 0x100 is reset vector, and it is ok.
>
> ----- Original Message -----
> From: "Stephan Linke" <Stephan.Linke@epygi.de>
> To: "Linuxppc-Embedded" <linuxppc-embedded@lists.linuxppc.org>
> Sent: Monday, June 16, 2003 6:56 PM
> Subject: debugging using BDI2000 on MPC860
>
>
> >
> > Hi,
> >
> > I want to use our BDI2000 to debug my MPC860 board. Unfortunately it always stops with a machine check interrupt at 0x00000100.
> > Flashing works fine.
> > Our flash is at 0xff000000, IMMR at f0000000...
> >
> > Any ideas? How do I define the boot address in MPC860 config files.
> >
> > Thanks, Stephan
> >
> >
> >
>
>
>

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RE: debugging using BDI2000 on MPC860

[Stephan Linke]

I found the reason. The is no default boot addres defined. So I have to start the board with "go <bootaddress>" :-(

Thanks, Stephan

> -----Original Message-----
> From: Shen Rong [mailto:rshen@udtech.com.cn]
> Sent: Montag, 16. Juni 2003 13:58
> To: Stephan Linke
> Subject: Re: debugging using BDI2000 on MPC860
>
>
> Maybe a machine check occured and leaded to a reset.
> ME bit in MSR can be set to let machine check lead to a exception.
>
> Normally, BDI will stop at reset vector address after it catches the CPU,
> so you can use "go" to start from reset vector. Anyway, your can use
> "go [address]" to start from another address.
>
>
> ----- Original Message -----
> From: "Stephan Linke" <Stephan.Linke@epygi.de>
> To: "Shen Rong" <rshen@udtech.com.cn>
> Cc: "Linuxppc-Embedded" <linuxppc-embedded@lists.linuxppc.org>
> Sent: Monday, June 16, 2003 7:28 PM
> Subject: RE: debugging using BDI2000 on MPC860
>
>
> >
> > Hi Shen,
> >
> > Thanks for your response,
> >
> > I don't know how to interprete this but it always stops with the following status:
> >
> >     Target state      : debug mode
> >     Debug entry cause : machine check interrupt
> >     Current PC        : 0x00000100
> >     Data  address     : 0x00000000
> >     DSISR value       : 0x00000000
> >
> > Regards, Stephan
> >
> > > -----Original Message-----
> > > From: Shen Rong [mailto:rshen@udtech.com.cn]
> > > Sent: Montag, 16. Juni 2003 13:03
> > > To: Stephan Linke
> > > Subject: Re: debugging using BDI2000 on MPC860
> > >
> > >
> > > Machine check exception vector is located at 0x200.
> > > 0x100 is reset vector, and it is ok.
> > >
> > > ----- Original Message -----
> > > From: "Stephan Linke" <Stephan.Linke@epygi.de>
> > > To: "Linuxppc-Embedded" <linuxppc-embedded@lists.linuxppc.org>
> > > Sent: Monday, June 16, 2003 6:56 PM
> > > Subject: debugging using BDI2000 on MPC860
> > >
> > >
> > > >
> > > > Hi,
> > > >
> > > > I want to use our BDI2000 to debug my MPC860 board. Unfortunately it always stops with a machine check interrupt at
> 0x00000100.
> > > > Flashing works fine.
> > > > Our flash is at 0xff000000, IMMR at f0000000...
> > > >
> > > > Any ideas? How do I define the boot address in MPC860 config files.
> > > >
> > > > Thanks, Stephan
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
>
>
>

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Re: debugging using BDI2000 on MPC860

[Peter Barada]

>I don't know how to interprete this but it always stops with the following status:
>
>    Target state      : debug mode
>    Debug entry cause : machine check interrupt
>    Current PC        : 0x00000100
>    Data  address     : 0x00000000
>    DSISR value       : 0x00000000

>From this you can see that the BDI stopped processing at address 0x100
(Current PC) because of a machine check (Debug entry cause).  You
should check the values of srr0/srr1, etc to determine why it took the
machine check.

--
Peter Barada                             Peter.Barada@motorola.com
Wizard                                   781-852-2768 (direct)
WaveMark Solutions(A Motorola Company)   781-270-0193 (fax)

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