RISC-V 64bit qemu virt machine support has been added in edk2
version "stable202302". See [1].
Since edk2-stable202308, introduced in buildroot in commit 5c9f310
"boot/edk2: bump to version edk2-stable202308", it is now possible
to boot the edk2 UEFI shell in qemu.
This commit adds this early RISC-V support to edk2.
The RISC-V edk2 UEFI shell can be booted in Buildroot with the
following commands:
# Build EDK2 images
cat > .config <<EOF
BR2_riscv=y
BR2_RISCV_64=y
BR2_PACKAGE_HOST_QEMU=y
BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y
BR2_TARGET_EDK2=y
EOF
make olddefconfig
make
# edk2 image size should fit the 32MB of qemu pflash memories
truncate -s 32M output/images/RISCV_VIRT_CODE.fd
truncate -s 32M output/images/RISCV_VIRT_VARS.fd
# Start qemu:
output/host/usr/bin/qemu-system-riscv64 \
-M virt,pflash0=pflash0,pflash1=pflash1,acpi=off \
-nographic \
-blockdev node-name=pflash0,driver=file,read-only=on,filename=output/images/RISCV_VIRT_CODE.fd \
-blockdev node-name=pflash1,driver=file,filename=output/images/RISCV_VIRT_VARS.fd
Note: a Qemu version >= 8.0.0 is needed to properly start edk2. A qemu
version on the host system might not be sufficient. This is why the
Buildroot host-qemu is built in this config example.
[1] https://github.com/tianocore/edk2/releases/tag/edk2-stable202302
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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