- Move to Microkit 1.4.0.
- Previously a development version of Microkit was used, now we use an official release for everything.
- Add QEMU support to the timer and echo server examples.
- Remove dependency on a full libc, all the provided components use our own utility functions now.
- Transition to a modular 'Makefile snippets' build system structure to simplify the composition of sDDF components.
- Introduce snippets for the Zig build system, as an alternative to Make.
- Instructions for using the Zig build system can be found in each example's README.
- No components are solely built with Zig, the primary build system is still Make.
- Introduce configurable printf logging for debug versus release mode, making it easier to have some components continue logging to the serial in release mode.
- Move the capacity of the shared queue out of shared memory and into the queue handles. This prevents malicious clients from messing with the queue size and potentially causing the virtualiser or other trusted components to crash/misbehave.
- Introduce a config header to enable the system designer to have a variable
amount of clients, previously it was all hard-coded.
- It should be noted that we are working on tooling to automate this process and these configs are likely to significantly change by the next release.
- Change block virtualiser to use offsets when interfacing with clients and DMA
physical addresses when interfacing with the driver.
- This makes the block system consistent with the networking system in how it handles client-to-driver address translation.
- Use 'capacity' instead of size in the shared queue library to avoid confusion.
- Use 'capacity' instead of size in the shared queue library to avoid confusion.
- Add a virtIO network driver.
- This allows us to have networking on QEMU making it easier to simulate non-trivial systems.
- Change RX virtualiser policy for broadcast packets.
- Previously all broadcast packets would go to the ARP component, now the default policy is to forward broadcast packets to all clients.
- We have only run into this becoming necessary so far when simulating our systems using QEMU since its internal DHCP server sends broadcast packets.
- Introduce a config header to enable the system designer to have a variable
amount of clients, previously it was all hard-coded.
- It should be noted that we are working on tooling to automate this process and these configs are likely to significantly change by the next release.
- Fix caching operations in RX virtualiser, previously this would lead to issues with TCP traffic.
- Various bug fixes in the Amlogic ethernet driver.
- Fixes and changes for improved TCP performance.
- Redesign the entire sub-system.
- The serial device class was previously following the network design which was not an ideal design for serial devices. This new design is intended to be used for character-by-character devices. DMA capable serial devices will have a separate design, more aligned with the design of our other DMA capable devices such as ethernet and block.
- Various bugs were fixed and so individual drivers as well as the system as a whole should be more stable.
- Introduce a config header to enable the system designer to have a variable
amount of clients, previously it was all hard-coded.
- It should be noted that we are working on tooling to automate this process and these configs are likely to significantly change by the next release.
This release adds the initial sound virtualiser and shared queue library.
We do not yet have any native sound drivers.
See the design document for the specification and more information.
- Add a driver for the ARM architectural timer (necessary for QEMU on ARM).
- Various cleanup/refactoring of all the drivers to simplify their implementation and fix bugs.