Subject: Re: [PATCH 3/3] PowerPC4xx/E500 WatchDogTimerDriver(exception handler part)

From: Kumar Gala <[email-masked]>
Date: Thu, 3 Mar 2005 01:14:51 -0600

I've sent the part of this that was a bug fix to head_booke.h up stream 
to andrew.

- kumar

On Feb 28, 2005, at 7:27 AM, Takeharu KATO wrote:

> Dear Matt and all:
>
> This is PowerPC405 exception handling part.
>  This patch consist of two parts.
>
> I create this just in case, if you think that this is not needed,
>  please ignore them.
>
> 1) WatchDogException vector routine for ppc4xx.
>      It cause Oops with MachineCheckException as other PPC4xx do.
>  2) Trivial bug fix in head_booke.h
>     Trivial bug fix of CRITICAL_EXCEPTION macro.
>
> Signed-off-by: Takeharu KATO <[email-masked]>
>
>
>
> diff -uprN linux-2.6.11-rc5.orig/arch/ppc/kernel/head_4xx.S
>  linux-2.6.11-rc5-ppc4xx/arch/ppc/kernel/head_4xx.S
> --- linux-2.6.11-rc5.orig/arch/ppc/kernel/head_4xx.S    2005-02-27 
> 15:30:39.000000000 +0900
>  +++ linux-2.6.11-rc5-ppc4xx/arch/ppc/kernel/head_4xx.S  2005-02-28 
> 21:47:42.531317912 +0900
>  @@ -484,11 +484,11 @@ label:
>    */
>          STND_EXCEPTION(0x1010,  FITException,           
> UnknownException)
>
> +#endif
>    /* 0x1020 - Watchdog Timer (WDT) Exception
>    */
>
>         CRITICAL_EXCEPTION(0x1020, WDTException, UnknownException)
> -#endif
>
>   /* 0x1100 - Data TLB Miss Exception
>     * As the name implies, translation is not in the MMU, so search the
>  diff -uprN linux-2.6.11-rc5.orig/arch/ppc/kernel/head_booke.h
>  linux-2.6.11-rc5-ppc4xx/arch/ppc/kernel/head_booke.h
> --- linux-2.6.11-rc5.orig/arch/ppc/kernel/head_booke.h  2005-02-27 
> 15:27:12.000000000 +0900
>  +++ linux-2.6.11-rc5-ppc4xx/arch/ppc/kernel/head_booke.h        
> 2005-02-28 21:50:05.060650160 +0900
>  @@ -194,8 +194,8 @@ label:
>          CRITICAL_EXCEPTION_PROLOG;                              \
>          addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
>          EXC_XFER_TEMPLATE(hdlr, n+2, (MSR_KERNEL & 
> ~(MSR_ME|MSR_DE|MSR_CE)), \
>  -                         NOCOPY, transfer_to_handler_full, \
>  -                         ret_from_except_full)
> +                         NOCOPY, crit_transfer_to_handler, \
>  +                         ret_from_crit_exc)
>
>   #define MCHECK_EXCEPTION(n, label, hdlr)                      \
>          START_EXCEPTION(label);                                 \
>
>
>
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