Also add network testing example using virtio-net device, which should be helpful for users wanting to test U-Boot networking.
Signed-off-by: Manjae Cho <[email protected]> --- doc/board/emulation/qemu-riscv.rst | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst index b5948d9affc..25fe7beb43f 100644 --- a/doc/board/emulation/qemu-riscv.rst +++ b/doc/board/emulation/qemu-riscv.rst @@ -43,7 +43,7 @@ qemu-riscv64_smode_defconfig instead. Note that U-Boot running in supervisor mode requires a supervisor binary interface (SBI), such as RISC-V OpenSBI. To create a U-Boot binary that can be utilized with a pflash device in QEMU -apply these addtional settings to qemu-riscv64_smode_defconfig: +apply these additional settings to qemu-riscv64_smode_defconfig: :: @@ -205,6 +205,29 @@ Invoke QEMU with: qemu-system-riscv64 -M virt -nographic \ -drive if=pflash,format=raw,unit=0,file=u-boot.bin,readonly=off +Testing with Network +-------------------- + +The QEMU virt machine supports VirtIO network devices, which can be useful for +testing network functionality in U-Boot. To add a network device, use the +following QEMU parameters: + +.. code-block:: bash + + qemu-system-riscv64 -nographic -machine virt -bios u-boot.bin \ + -m 256M -netdev user,id=net0 -device virtio-net-device,netdev=net0 + +This will create a VirtIO network device (eth0) that U-Boot can detect and use. +You can verify the network device is recognized by checking the boot output for:: + + Net: eth0: virtio-net#0 + +From the U-Boot prompt, you can test network functionality with:: + + => net list + => dhcp + => ping 10.0.2.2 + Debug UART ---------- -- 2.43.0
