mirror of https://github.com/acidanthera/audk.git
50 lines
1.9 KiB
Markdown
50 lines
1.9 KiB
Markdown
# Support for RISC-V QEMU virt platform
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## Overview
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RISC-V QEMU 'virt' is a generic platform which does not correspond to any real
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hardware.
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EDK2 for RISC-V virt platform is a payload (S-mode) for the previous stage M-mode
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firmware like OpenSBI. It follows PEI less design.
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The minimum QEMU version required is
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**[8.1](https://wiki.qemu.org/Planning/8.1)** or with commit
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[7efd65423a](https://github.com/qemu/qemu/commit/7efd65423ab22e6f5890ca08ae40c84d6660242f)
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which supports separate pflash devices for EDK2 code and variable storage.
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## Build
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export WORKSPACE=`pwd`
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export GCC5_RISCV64_PREFIX=riscv64-linux-gnu-
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export PACKAGES_PATH=$WORKSPACE/edk2
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export EDK_TOOLS_PATH=$WORKSPACE/edk2/BaseTools
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source edk2/edksetup.sh
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make -C edk2/BaseTools
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source edk2/edksetup.sh BaseTools
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build -a RISCV64 --buildtarget RELEASE -p OvmfPkg/RiscVVirt/RiscVVirtQemu.dsc -t GCC5
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## Test
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Below example shows how to boot openSUSE Tumbleweed E20.
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1) RISC-V QEMU pflash devices should be of of size 32MiB.
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`truncate -s 32M Build/RiscVVirtQemu/RELEASE_GCC5/FV/RISCV_VIRT_CODE.fd`
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`truncate -s 32M Build/RiscVVirtQemu/RELEASE_GCC5/FV/RISCV_VIRT_VARS.fd`
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2) Running QEMU
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qemu-system-riscv64 \
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-M virt,pflash0=pflash0,pflash1=pflash1,acpi=off \
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-m 4096 -smp 2 \
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-serial mon:stdio \
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-device virtio-gpu-pci -full-screen \
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-device qemu-xhci \
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-device usb-kbd \
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-device virtio-rng-pci \
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-blockdev node-name=pflash0,driver=file,read-only=on,filename=RISCV_VIRT_CODE.fd \
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-blockdev node-name=pflash1,driver=file,filename=RISCV_VIRT_VARS.fd \
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-netdev user,id=net0 \
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-device virtio-net-pci,netdev=net0 \
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-device virtio-blk-device,drive=hd0 \
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-drive file=openSUSE-Tumbleweed-RISC-V-E20-efi.riscv64.raw,format=raw,id=hd0
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