[U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ?

[U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ?

[Sudhakar]

Hi all,

I'm working in a MPC 8540 based board where the Local Bus Chip Selects [ LCS1 
- LCS 7 ] are used to connect variuos peripherals such as NPU,CPLD etc.

To access the devices thru Uboot , What are the changes to be done ?

I have configured the BRn/ORn Settings and I treid to access the devices by 
reading a Read Only Register.But when i try to probe i could find any chip 
select Assertion.

Is there any configuration to be done to start using the Chip selects ?

If anyone have some idea please share some info to me.

-- 
Thanks and Regards,
Sudhakar V

GDA Technologies Ltd.
http://www.gdatech.com

[U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ?

[Scott Harper]

Don't forget to setup the TLB1_MAS register and the LAW registers.

Look at init.S in the MPC8540ads for examples.   I had to change this for my 
board.

Scott

On Friday 17 September 2004 02:26, Sudhakar wrote:
> Hi all,
>
> I'm working in a MPC 8540 based board where the Local Bus Chip Selects [
> LCS1 - LCS 7 ] are used to connect variuos peripherals such as NPU,CPLD
> etc.
>
> To access the devices thru Uboot , What are the changes to be done ?
>
> I have configured the BRn/ORn Settings and I treid to access the devices by
> reading a Read Only Register.But when i try to probe i could find any chip
> select Assertion.
>
> Is there any configuration to be done to start using the Chip selects ?
>
> If anyone have some idea please share some info to me.