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

[Laszlo Ersek]

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 at intel.com>
>> Cc: Ard Biesheuvel <ardb+tianocore at kernel.org>
>> Cc: Gerd Hoffmann <kraxel at redhat.com>
>> Cc: Jiewen Yao <jiewen.yao at intel.com>
>> Cc: Jordan Justen <jordan.l.justen at intel.com>
>> Cc: Sunil V L <sunilvl at ventanamicro.com>
>> Signed-off-by: Laszlo Ersek <lersek at 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?

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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