Have you tried to telnet to localhost:20715? Can you get any output in the
telnet window?
From: cruxpot [mailto:[email protected]]
Sent: Friday, January 04, 2013 3:05 PM
To: [email protected]
Subject: Re: [edk2] serial port debugging and ErrOut
Yes, I can debug with the intel debugger and set breakpoints but cannot get the
standard error device to print anything to serial using debuglib. Maybe its
because of the debug session?
On Jan 4, 2013 12:01 AM, "Ni, Ruiyu"
<[email protected]<mailto:[email protected]>> wrote:
Hi,
Are you able to debug (single step/go/break/...) the TunnelMountain in WinDbg?
==> If no, then you might have incorrect configuration. Close the UDK Debugger
(Exdi.exe & SoftDebugger.exe) and launch a hyper terminal to connect the Com
port, check whether there is output in the hyper terminal.
==> If yes, then launch the hyper terminal to telnet to localhost:20715 because
the UDK Debugger redirects the debug message to this TCP port. (yes your
understanding is correct only one app can open the serial port that's why the
terminal redirection feature is required by the UDK Debugger.)
Thanks,
Ray
From: cruxpot [mailto:[email protected]<mailto:[email protected]>]
Sent: Friday, January 04, 2013 8:18 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: [edk2] serial port debugging and ErrOut
Andrew,
Thanks, I was able to get it configured on NT32's setup in Boot Maintenance
Manager->Console options and it prints purple output to the console screens.
Doing the same thing on the tunnelmountain box and setting the "Console
Standard Error Device Select" to the serial port options yielded no output to
the debugger. I am wondering if this is because the debugger is already
attached over the serial port UDK source debug ROM and the standard error
device cannot be set to this because of a conflict. Any ideas on how to work
around this and get standard error in this scenario?
On Thu, Jan 3, 2013 at 5:35 PM, Andrew Fish
<[email protected]<mailto:[email protected]>> wrote:
On Jan 3, 2013, at 3:15 PM, cruxpot
<[email protected]<mailto:[email protected]>> wrote:
> Hi all,
>
> I am trying to set up proper debugging with the EDK2 compiled
> applications/drivers and have been unsuccessful. So far, I have only been
> able to get UefiDebugLibConOut library to work and output DebugPrint messages
> to the console.
>
> However, I would prefer that they be sent to the serial console. I am using a
> tunnel mountain UEFI debug system with the source level debug ROM and have
> the DebugCommunicationLibSerialPort library turned on as per the
> instructions. I am wondering if this conflicts with turning on
> BaseSerialPortLib16550 and BaseDebugLibSerialPort for sending DebugPrint
> messages to the attached Intel/WinDbg debugger. I was unable to get
> DebugPrint to print anything.
>
> My other problem is that error messages seem to go nowhere. I have read that
> you are supposed to configure ErrOut and ErrOutDev variables or somehow
> configure a standard error device but I can't find anything on how to do
> this. How can I get these point to the console and/or a serial port?
> ErrorPrint messages to do not appear at all and neither do any DebugPrint
> messages when using UefiDebugLibStdErr. I had the same problem when running
> in NT32.
>
The UEFI spec only speaks on what to do if the variables are set, not on the
platform policy on setting ,or configuring, variables. The shell has a
'dmpstore' command that you can use to see how the variables are configured.
The 'bcfg' shell command allows configuration of the driver and boot variables,
but I can't remember a command that does the same for console variables.
Your best bet is to look at the system setup screens and see if there is an
option to configure this?
Thanks,
Andrew
> I have been scouring the Internet for information on setting up proper
> debugging and looking at ch. 31 of the UEFI driver writer guide. Maybe I
> missed something.
>
> Thanks,
> Nick
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