Linux Code

The Linux code contains the following three elements:
  1. RPMsg code:

    Inter-processor uses the standard virtio-base RPMsg protocol to communicate. RPMsg, also known as Remote Processor Messaging, defines the standard binary interface used for communication between cores in heterogeneous AMP system.

    In Linux kernel, the codes of RPMsg are:
    driver/rpmsg/virtio_rpmsg_bus.c
drivers/rpmsg/starfive_rpmsg.c
  2. Mailbox code:
    drivers/mailbox/starfive_ipi_mailbox.c
  3. AMP DTS file:

    arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-amp.dts