opensbi.git/lib/utils/mailbox/objects.mk, branch master

lib/utils: Add RPMI messaging protocol and shared memory transport support

2024-12-06T03:56:21Z

The RISC-V Platform Management Interface (RPMI) defines a messaging protocol and shared memory based transport for bi-directional communication with an on-chip or external microcontroller. To support RPMI in OpenSBI, add: 1) The RPMI messaging protocol defines and helper macros 2) A FDT mailbox driver for the RPMI shared memory transport Signed-off-by: Rahul Pathak Co-developed-by: Subrahmanya Lingappa Signed-off-by: Subrahmanya Lingappa Co-developed-by: Anup Patel Signed-off-by: Anup Patel

lib: utils/mailbox: Add simple FDT based mailbox framework

2024-12-06T03:56:19Z

Add a simple FDT based mailbox framework which is built on top of the generic mailbox library. The phandle of FDT mailbox DT node is treated as the unique mailbox controller ID which is required by the generic mailbox library. The FDT based mailbox drivers will be probed on-demand from fdt_mailbox_request_chan() called by the mailbox client drivers. Signed-off-by: Anup Patel

lib: utils/mailbox: Add generic mailbox library

2024-12-06T03:56:13Z

Add generic mailbox library which is independent of hardware description format. The OpenSBI platform support or mailbox drivers can register mailbox controller instances which can be discovered and used by different mailbox client drivers. Each mailbox controller instance has a unique ID which can be used by mailbox client drivers for find the mailbox controller instance. The mailbox client drivers will typically request a mailbox channel from the mailbox controller and use it to do data transfer with the remote end of mailbox channel. Signed-off-by: Anup Patel