qemu_sifive_u.md

QEMU SiFive Unleashed Machine Platform

The QEMU SiFive Unleashed Machine is an emulation of the SiFive Unleashed platform.

To build this platform specific library and firmwares, provide the PLATFORM=qemu/sifive_u parameter to the top level make command line.

Note with QEMU v4.2 release, the QEMU sifive_u machine has been updated to closely match the SiFive HiFive Unleashed hardware and can therefore run the same firmware as what gets loaded onto the board, and OpenSBI's qemu/sifive_u platform should only be used with QEMU v4.1 release or before.

The special qemu/sifive_u platform support will be dropped in the future OpenSBI release.

Platform Options

The QEMU SiFive Unleashed Machine platform does not have any platform specific options.

Executing on QEMU RISC-V 64-bit

No Payload Case

Build:

make PLATFORM=qemu/sifive_u

Run:

qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio \
	-kernel build/platform/qemu/sifive_u/firmware/fw_payload.elf

U-Boot as a Payload

Note: the command line examples here assume that U-Boot was compiled using the sifive_fu540_defconfig configuration.

Build:

make PLATFORM=qemu/sifive_u FW_PAYLOAD_PATH=<uboot_build_directory>/u-boot.bin

Run:

qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio \
	-kernel build/platform/qemu/sifive_u/firmware/fw_payload.elf

or

qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio \
	-kernel build/platform/qemu/sifive_u/firmware/fw_jump.elf \
	-device loader,file=<uboot_build_directory>/u-boot.bin,addr=0x80200000