[Suzaku-en:00151] Re: DSOCM

Suheel email@hidden
Wed Feb 15 22:34:27 JST 2006


OK

linux is booting (there must have been somthing other wrong in the 
fpga-core)
with hermit i can write and read from the DSOCM-connected RAM @ address 
0x80000000

for linux i modified the Char-device driver, that worked fine with the 
PLB, or OPB- connected RAM,
but it dont works (reads just 0s)

do i have to write a MTD-device-driver, like the one for the flash?
is a char-device andthe copy_to_user/copy_from user -functions the wrong 
way?

thank you very much!



S.Georges schrieb:
> first problem solved,
>
> C_DSCNTLVALUE was wrong, the clockdivider was 3 instead 0f 7.
>
>
> but uClinux still hangs!
> would be very happy, if anone gives some sugessts on this, because i am very new
> to linux.
> do i have to allocte the adressrange anywhere? how?
>
> thanx
> Suheel
>
>
>
>   
>> Hello,
>>
>> can anyone help me with DSOCM?
>> i connected a bramblock with the dsbram_if_ctrl to the dsocm bus.
>>
>> in hermit with frob, when i write 0x12345678 to the adress, i get only peeked
>> back 0x00040078
>>
>> when booting to uclinux, after the line:"Freeing unused kernel memory: 40k
>> init"
>> it becomes very slow, and writes each letter in half a second... and then
>> after
>> "Mounting var:" it hangs completeley.
>>
>> i tried different adresses 0x80000000 or 0x200000000 or 0x7000000000
>> everywhere
>> the same.
>>
>> where is the trick, what did i miss?
>>
>> thank you very much!
>> Suheel
>>
>>
>>
>>
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