config PPC_PREP bool "PowerPC Reference Platform (PReP) based machines" depends on 6xx && BROKEN select HAVE_PCSPKR_PLATFORM select MPIC select PPC_I8259 select PPC_INDIRECT_PCI select PPC_UDBG_16550 select PPC_NATIVE default n config PREP_RESIDUAL bool "Support for PReP Residual Data" depends on PPC_PREP help Some PReP systems have residual data passed to the kernel by the firmware. This allows detection of memory size, devices present and other useful pieces of information. Sometimes this information is not present or incorrect, in which case it could lead to the machine behaving incorrectly. If this happens, either disable PREP_RESIDUAL or pass the 'noresidual' option to the kernel. If you are running a PReP system, say Y here, otherwise say N.