arm64: AMD Overdrive MNP Bug

arm64: AMD Overdrive MNP Bug

[sahajsarup]

Hi all,

I just flashed edk2 to my AMD Overdrive 3000 for the first time, it is
a fresh edk2 build as well.

When it boot i'm bombarded with this error:
MnpReceivePacket: Snp->Receive() = Device Error.

This continues till the OS takes over UART, it makes the edk2 TUI
completely unusable.
Please let me know if you require any other logs and for the time
being is there a way to suppress this message or disable the component
completely?


-- 
Best Regards
Sahaj Sarup

Re: [edk2-devel] arm64: AMD Overdrive MNP Bug

[Laszlo Ersek]

On 08/22/20 21:43, Sahaj Sarup wrote:
> Hi all,
> 
> I just flashed edk2 to my AMD Overdrive 3000 for the first time, it is
> a fresh edk2 build as well.
> 
> When it boot i'm bombarded with this error:
> MnpReceivePacket: Snp->Receive() = Device Error.
> 
> This continues till the OS takes over UART, it makes the edk2 TUI
> completely unusable.
> Please let me know if you require any other logs and for the time
> being is there a way to suppress this message or disable the component
> completely?

It seems like MnpReceivePacket() [NetworkPkg/MnpDxe/MnpIo.c] reports
that Snp->Receive() failed. Unless we can prove that the SNP failure is
justified/expected due to invalid SNP use in the MNP driver, you really
have to look into your SNP driver. (It most probably comes flashed onto
your NIC; not sure where you can get access to the source code.)

Thanks
Laszlo