Re: [edk2-devel] [PATCH 1/1] OvmfPkg/RiscVVirt/README.md: bring your own OpenSBI

["Sunil V L" <sunilvl@ventanamicro.com>]

On Mon, Sep 11, 2023 at 07:32:06AM +0200, Laszlo Ersek wrote:
> On 9/8/23 08:13, Sunil V L wrote:
> > Hi Laszlo,
> > 
> > On Thu, Sep 07, 2023 at 04:58:25PM +0200, Laszlo Ersek wrote:
> >> 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>
> >> ---
> >>
> >> Notes:
> >>     rendered version:
> >>     
> >>     https://github.com/lersek/edk2/tree/bring-your-own-opensbi/OvmfPkg/RiscVVirt#test-with-your-own-opensbi-binary
> >>
> >>  OvmfPkg/RiscVVirt/README.md | 17 +++++++++++++++++
> >>  1 file changed, 17 insertions(+)
> >>
> >> diff --git a/OvmfPkg/RiscVVirt/README.md b/OvmfPkg/RiscVVirt/README.md
> >> index 8c3ac37b802a..dbb40bbe89b0 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
> >> +
> > Do we need to duplicate these OpenSBI build instructions in EDK2? IMO,
> > we should just document how to use -bios to use custom OpenSBI image.
> > The build instructions for other software repos can change at any
> > time.
> 
> Can we include the opensbi project URL at least?
> 
Hi Laszlo,

Yes, I think providing the URL is a good idea.

Thanks,
Sunil

> Laszlo
> 
> > 
> > Thanks,
> > Sunil
> >> +then specify that binary for QEMU, with the following additional command line
> >> +option:
> >> +
> >> +    -bios $OPENSBI_DIR/build/platform/generic/firmware/fw_dynamic.bin
> > 
> 


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