Sorry. Forgot to mention this in my preceding email. My UDK DebugPort
setting is as follows:

[DebugPort]
Channel = Serial
Port = COM4
FlowControl = 1
BaudRate = 115200


On Fri, Jul 25, 2014 at 3:40 PM, Gurinder Singh
<[email protected]> wrote:
> Hi guys,
>
> I'm trying to debug a UEFI application by running it under OVMF and
> connecting to it over serial port with Intel UDK. I've created virtual
> serial ports using com0com. OVMF is running in Qemu and connected to
> one end of the port pair and WinDbg/UDK is connected to the other end.
>
> My problem is that the serial port communication between debugger and
> OVMF starts okay but then gets stucks at  "m_WaitingAckForReset is 0
> when INIT_BREAK". I can't seem to get past this point.
>
> My environment details are:
>
> OVMF built with -D SOURCE_DEBUG_ENABLE -D DEBUG_ON_SERIAL_PORT -D 
> NETWORK_ENABLE
> qemu is x64 version is 2.0.91
> OS is Windows 8.1 x64
> UDK version is 1.4
> WinDbg is x86 debugger from Windows SDK 8.1 (UDK requires x86 WinDbg
> even if you're on an x64 OS)
>
>
> Details of my virtual port pair are:
>
> BaudRate: 115200
> Data bits: 8
> Parity: none
> Stop bits: 1
> FlowControl: Xoff/Xon
>
>
> If anyone can spot what I'm doing wrong please help me.
>
> Thanks in advance.
>
> -Gurinder

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