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NanoKVM-MIRROR/support/sg2002/README.md
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Use per-codec capture locks and encoder backpressure, simplify frame ownership, and follow HDMI input dimensions. Refresh prebuilt video libraries while preserving server-only builds and deployment instructions.
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NanoKVM Support Instructions

Environment Preparation

NanoKVM-Lite/Full/PCIe uses the SG2002. The system daemon and libkvm.so wrapper build with MaixCDK; libkvm_mmf.so builds separately with CMake using the Sophgo sources in that checkout. Configure and activate the MaixCDK environment and add the RISC-V musl toolchain to PATH. Run the commands below from support/sg2002/. Alternatively, make vision at the repository root builds the video libraries in Docker. make app builds the server using the prebuilt libraries in server/dl_lib/.

kvm_system Compilation Instructions

The kvm_system is responsible for monitoring the NanoKVM system status, system updates, screen key drivers, and a few system functions, compiled with MaixCDK.

  1. Before compiling, please ensure that the above-mentioned MaixCDK environment is correctly configured.
  2. Modify the paths of MAIXCDK_PATH and NanoKVM_PATH in ./build.
  3. Execute ./build kvm_system to compile kvm_system.
  4. Use scp ./kvm_system/dist/kvm_system_release/kvm_system root@192.168.x.x:/kvmapp/kvm_system to copy it to NanoKVM for testing.
  5. Use ./build kvm_system add_to_kvmapp to stage the executable in the repository's kvmapp/ directory.
  6. Use ./build kvm_system clean to clean the compilation of kvm_system.

kvm_vision Compilation Instructions

kvm_vision builds libkvm_mmf.so, then the MaixCDK wrapper libkvm.so and the kvm_vision_test example.

  1. Before compiling, please ensure that the above-mentioned MaixCDK environment is correctly configured.
  2. Modify the paths of MAIXCDK_PATH and NanoKVM_PATH in ./build.
  3. Execute ./build kvm_vision to build both libraries and the example. The library build and install directories are kvm_vision_test/build/kvm_mmf-build/ and kvm_vision_test/build/kvm_mmf-install/.
  4. The resulting libraries are in kvm_vision_test/dist/kvm_vision_test_release/dl_lib/.
  5. Run ./build kvm_vision add_to_kvmapp to stage them in the repository's kvmapp/server/dl_lib/.
  6. After changing the video library interfaces, update both prebuilt files server/dl_lib/libkvm.so and server/dl_lib/libkvm_mmf.so from the same build. Server compilation uses these files directly; see the server build instructions.
  7. Use ./build kvm_vision clean to remove the build outputs, including both library build and install directories.