1config PCI 2 bool "PCI support" 3 depends on SYS_SUPPORTS_PCI 4 help 5 Find out whether you have a PCI motherboard. PCI is the name of a 6 bus system, i.e. the way the CPU talks to the other stuff inside 7 your box. If you have PCI, say Y, otherwise N. 8 9config SH_PCIDMA_NONCOHERENT 10 bool "Cache and PCI noncoherent" 11 depends on PCI 12 default y 13 help 14 Enable this option if your platform does not have a CPU cache which 15 remains coherent with PCI DMA. It is safest to say 'Y', although you 16 will see better performance if you can say 'N', because the PCI DMA 17 code will not have to flush the CPU's caches. If you have a PCI host 18 bridge integrated with your SH CPU, refer carefully to the chip specs 19 to see if you can say 'N' here. Otherwise, leave it as 'Y'. 20 21# This is also board-specific 22config PCI_AUTO 23 bool 24 depends on PCI 25 default y 26 27config PCI_AUTO_UPDATE_RESOURCES 28 bool 29 depends on PCI_AUTO 30 default y if !SH_DREAMCAST 31 help 32 Selecting this option will cause the PCI auto code to leave your 33 BAR values alone. Otherwise they will be updated automatically. If 34 for some reason, you have a board that simply refuses to work 35 with its resources updated beyond what they are when the device 36 is powered up, set this to N. Everyone else will want this as Y. 37 38