OPENAMP: Open Asymmetric Multi-Processing MAX IO regions created by libmetal. Messaging buffer size. Configure the OPENAMP application to run as Master or Slave on Cortex-M4. Configure the OPENAMP application to run as Master or Slave on Cortex-M7. Number of Resources. Fixed value = 2. Number of Vrings. Fixed value = 2. Virtio Device ID. Fixed value = 0xFF. VRING0 ID (master to remote). Fixed value = 0. VRING1 ID (remote to master). Fixed value = 1. OPENAMP_Init S_OPENAMP_SET$context