1menuconfig MAILBOX 2 bool "Mailbox Hardware Support" 3 help 4 Mailbox is a framework to control hardware communication between 5 on-chip processors through queued messages and interrupt driven 6 signals. Say Y if your platform supports hardware mailboxes. 7 8if MAILBOX 9config PL320_MBOX 10 bool "ARM PL320 Mailbox" 11 depends on ARM_AMBA 12 help 13 An implementation of the ARM PL320 Interprocessor Communication 14 Mailbox (IPCM), tailored for the Calxeda Highbank. It is used to 15 send short messages between Highbank's A9 cores and the EnergyCore 16 Management Engine, primarily for cpufreq. Say Y here if you want 17 to use the PL320 IPCM support. 18 19endif 20