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authorLaszlo Ersek <lersek@redhat.com>2023-09-07 16:58:25 +0200
committermergify[bot] <37929162+mergify[bot]@users.noreply.github.com>2023-09-12 06:07:32 +0000
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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 <andrei.warkentin@intel.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Sunil V L <sunilvl@ventanamicro.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Diffstat (limited to 'OvmfPkg/RiscVVirt')
-rw-r--r--OvmfPkg/RiscVVirt/README.md17
1 files changed, 17 insertions, 0 deletions
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