Jeff,
Since we need to add an InitFlag, can we also add DEBUG_AGENT_INIT_PEI_POSTMEM?
The code base does not seem to offer the option of having the debugger be part
of the PEI Core, which I think is a design bug. I could envision system
architectures where it is not wise to have a debugger integrated into the
SEcurity Core, but a debugger for PEI is till wanted. So I think the PEI Core
should have InitializeDebugagent() calls for DEBUG_AGENT_INIT_PEI, and
DEBUG_AGENT_INIT_PEI_POSTMEM.
Thanks,
Andrew Fish
On Aug 27, 2012, at 1:15 AM, Fan, Jeff wrote:
> Andrew,
>
> Good catch! Now, only Debug Timer interrupt was disabled before hand-off to
> OS.
>
> Besides Debug Registers, we also need to think how to clear the soft break
> points set by WinDbg or GDB in runtime services or in SMM code. One new
> InitFlag could be introduced to help HOST debugger to clear such break points
> if needed.
>
> Jeff
> From: Andrew Fish [mailto:[email protected]]
> Sent: Saturday, August 25, 2012 3:01 AM
> To: [email protected]
> Subject: [edk2] DebugAgentLib question
>
> #define DEBUG_AGENT_INIT_PREMEM_SEC 1
> #define DEBUG_AGENT_INIT_POSTMEM_SEC 2
> #define DEBUG_AGENT_INIT_DXE_CORE 3
> #define DEBUG_AGENT_INIT_SMM 4
> #define DEBUG_AGENT_INIT_ENTER_SMI 5
> #define DEBUG_AGENT_INIT_EXIT_SMI 6
> #define DEBUG_AGENT_INIT_S3 7
> #define DEBUG_AGENT_INIT_DXE_AP 8
> #define DEBUG_AGENT_INIT_PEI 9
> #define DEBUG_AGENT_INIT_DXE_LOAD 10
> #define DEBUG_AGENT_INIT_DXE_UNLOAD 11
>
> I was looking for a InitializeDebugAgent() InitFlag to turn off the debugger
> on boot? I was worried that if debug register were active when the OS boots
> that may cause an issue. Is it safe to assume the OS would clear debug
> registers prior to switching over the IDT? That seems to be implied by this
> interface?
>
> Andrew Fish
>
> https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/MdeModulePkg/Include/Library/DebugAgentLib.h
>
>
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