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Recent changes to debug timer handling ended up leaving the timer disabled in PEI. This made it impossible to stop execution in PEI externally via the debugger. Enable the timer when InitializeDebugAgent calls InitializeDebugAgentPhase2, as well as when it returns directly. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brian J. Johnson <bjohnson@sgi.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17819 6f19259b-4bc3-4df7-8a09-765794883524
UDK based firmware on UEFI IA-32 and UEFI x64 platforms can be debugged with SourceLevelDebugPkg in conjunction with Intel(R) UEFI Development Kit Debugger Tool (Intel (R) UDK Debugger Tool). The Intel(R) UDK Debugger Tool and its detailed user manual can be obtained from: http://www.uefidk.com/develop.