PowerPC + SMP

Kumar Gala kumar.gala at freescale.com
Tue Apr 26 07:39:56 EST 2005

On Apr 25, 2005, at 4:10 PM, Stuart Yoder wrote:

> Hi.
> I am trying to figure out where in the PowerPC kernel the HID1 
> register is updated to enable bits dealing with cache coherency in an 
> SMP system.   Grepping through the arch/ppc source does not reveal 
> much.
> I have two 7447A processors and somewhere the ABE and SYNCBE bits in 
> HID1 need to be turned on to enable cache coherency.   Is supposed to 
> happen in the bootloader prior to the kernel running??

The expectation is that the bootloader normally handles such things.

- kumar

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