DC_Unlockdown

C Specification

#include <nitro/os.h>
void DC_Unlockdown( u32 num );

Arguments

num Designates the number of lockdown blocks to deallocate.

Return Values

None.

Description

Instruction cache can be locked with DC_LockdownRange, which prevents the cache from being deleted. DC_Unlockdown releases the instruction cache to be deleted when the cache is replaced. This function releases, in order, a num number of lockdown blocks from the region that was last locked with the DC_LockdownRange function. There are a maximum of three configurable lockdown blocks, so the maximum number of lockdown blocks designated with num is also three.

Internal Operation

Operates registers 7 and 9 of the system control coprocessor.

See Also

DC_LockdownRange,DC_UnlockdownAll

Revision History

01/21/2005 Initial version.