93f81bd490
repo: https://github.com/T-head-Semi/opensbi commit: 89182b257c8798e15e4c685c1af0c2862d528d2a Change-Id: I7b39d66729e0108661a6f4c9e28acbdb303684ea
3.6 KiB
QEMU RISC-V Virt Machine Platform
The QEMU RISC-V Virt Machine is a virtual platform created for RISC-V software development and testing. It is also referred to as QEMU RISC-V VirtIO machine because it uses VirtIO devices for network, storage, and other types of IO.
To build the platform-specific library and firmware images, provide the
PLATFORM=generic parameter to the top level make command.
Platform Options
The QEMU RISC-V Virt Machine platform does not have any platform-specific options.
Execution on QEMU RISC-V 64-bit
No Payload Case
Build:
make PLATFORM=generic
Run:
qemu-system-riscv64 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_payload.bin
U-Boot Payload
Note: the command line examples here assume that U-Boot was compiled using
the qemu-riscv64_smode_defconfig configuration.
Build:
make PLATFORM=generic FW_PAYLOAD_PATH=<uboot_build_directory>/u-boot.bin
Run:
qemu-system-riscv64 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_payload.elf
or
qemu-system-riscv64 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_jump.bin \
-kernel <uboot_build_directory>/u-boot.bin
Linux Kernel Payload
Note: We assume that the Linux kernel is compiled using arch/riscv/configs/defconfig.
Build:
make PLATFORM=generic FW_PAYLOAD_PATH=<linux_build_directory>/arch/riscv/boot/Image
Run:
qemu-system-riscv64 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_payload.elf \
-drive file=<path_to_linux_rootfs>,format=raw,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-append "root=/dev/vda rw console=ttyS0"
or
qemu-system-riscv64 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_jump.bin \
-kernel <linux_build_directory>/arch/riscv/boot/Image \
-drive file=<path_to_linux_rootfs>,format=raw,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-append "root=/dev/vda rw console=ttyS0"
Execution on QEMU RISC-V 32-bit
No Payload Case
Build:
make PLATFORM=generic PLATFORM_RISCV_XLEN=32
Run:
qemu-system-riscv32 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_payload.bin
U-Boot Payload
Note: the command line examples here assume that U-Boot was compiled using
the qemu-riscv32_smode_defconfig configuration.
Build:
make PLATFORM=generic PLATFORM_RISCV_XLEN=32 FW_PAYLOAD_PATH=<uboot_build_directory>/u-boot.bin
Run:
qemu-system-riscv32 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_payload.elf
or
qemu-system-riscv32 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_jump.bin \
-kernel <uboot_build_directory>/u-boot.bin
Linux Kernel Payload
Note: We assume that the Linux kernel is compiled using arch/riscv/configs/rv32_defconfig.
Build:
make PLATFORM=generic PLATFORM_RISCV_XLEN=32 FW_PAYLOAD_PATH=<linux_build_directory>/arch/riscv/boot/Image
Run:
qemu-system-riscv32 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_payload.elf \
-drive file=<path_to_linux_rootfs>,format=raw,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-append "root=/dev/vda rw console=ttyS0"
or
qemu-system-riscv32 -M virt -m 256M -nographic \
-bios build/platform/generic/firmware/fw_jump.bin \
-kernel <linux_build_directory>/arch/riscv/boot/Image \
-drive file=<path_to_linux_rootfs>,format=raw,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-append "root=/dev/vda rw console=ttyS0"