[U-Boot-Users] Enabling Cache in MPC5200

[sanguru]

Thanks  Detlev for the reply.

Its a "standard lite5200" from Freescale.
The cache gets enabled in some boards and not in some.
2 out of 4 boards we have,  has this issue.
I will check my RAM initialisation.
Any more pointers will be helpful.

-San

Detlev Zundel wrote:
> 
> Hi San,
> 
>> I am using a LITE5200 evaluation board, and am not able to enable the
>> cache.
>> The execution hangs in these calls.
>> void EnableInstCache(void)
>> {
> 
> [...]
> 
>> }
>>
>> void EnableDataCache(void)
>> {
> 
> [...]
> 
>> }
>> What could be the problem?
> 
> It might be one of our favourites, i.e. wrong ram initialization.
> When enabling the caches, the CPU generates burst accesses for the
> first time.  It is pretty common (on this mailing list) that not quite
> correctly initialized RAM works for single beat but fails for bursts.
> So my advice would be to check the RAM init.
> 
> Is is really a standard lite5200 board that you use?
> 
> Cheers
>   Detlev
> 
> -- 
> The best way to predict the future is to invent it.
>                                            -- Alan Kay
> --
> DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
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