From b7a48bed16dd75ce6a864540ab7dc38d8f1f657b Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Thu, 7 Sep 2023 16:58:25 +0200 Subject: [PATCH] OvmfPkg/RiscVVirt/README.md: bring your own OpenSBI Explain how users can compose their pre-OS environment purely from binaries they've built themselves. Cc: Andrei Warkentin Cc: Ard Biesheuvel Cc: Gerd Hoffmann Cc: Jiewen Yao Cc: Jordan Justen Cc: Sunil V L Signed-off-by: Laszlo Ersek Reviewed-by: Sunil V L --- OvmfPkg/RiscVVirt/README.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/OvmfPkg/RiscVVirt/README.md b/OvmfPkg/RiscVVirt/README.md index 8c3ac37b80..dbb40bbe89 100644 --- a/OvmfPkg/RiscVVirt/README.md +++ b/OvmfPkg/RiscVVirt/README.md @@ -69,3 +69,20 @@ Below example shows how to boot openSUSE Tumbleweed E20. -device virtio-net-pci,netdev=net0 \ -device virtio-blk-device,drive=hd0 \ -drive file=openSUSE-Tumbleweed-RISC-V-E20-efi.riscv64.raw,format=raw,id=hd0 + +## Test with your own OpenSBI binary +Using the above QEMU command line, **RISCV_VIRT_CODE.fd** is launched by the +OpenSBI binary that is bundled with QEMU. You can build your own OpenSBI binary +as well: + + OPENSBI_DIR=... + git clone https://github.com/riscv/opensbi.git $OPENSBI_DIR + make -C $OPENSBI_DIR \ + -j $(getconf _NPROCESSORS_ONLN) \ + CROSS_COMPILE=riscv64-linux-gnu- \ + PLATFORM=generic + +then specify that binary for QEMU, with the following additional command line +option: + + -bios $OPENSBI_DIR/build/platform/generic/firmware/fw_dynamic.bin