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SourceLevelDebugPkg: Avoid NULL pointer reference. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>




git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17183 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan 2015-04-15 06:55:12 +00:00 committed by vanjeff
parent d3938cc861
commit 14f3f88214
1 changed files with 16 additions and 15 deletions
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31
SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c
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@ -525,22 +525,23 @@ InitializeDebugAgent (
if (Mailbox == NULL) {
DEBUG ((EFI_D_ERROR, "DebugAgent: Failed to allocate memory!\n"));
CpuDeadLoop ();
} else {
MailboxLocation = (UINT64)(UINTN)Mailbox;
MailboxLocationPointer = BuildGuidDataHob (
&gEfiDebugAgentGuid,
&MailboxLocation,
sizeof (UINT64)
);
//
// Initialize Debug Timer hardware and save its frequency
//
InitializeDebugTimer (&DebugTimerFrequency);
UpdateMailboxContent (Mailbox, DEBUG_MAILBOX_DEBUG_TIMER_FREQUENCY, DebugTimerFrequency);
//
// Update IDT entry to save the location pointer saved mailbox pointer
//
SetLocationSavedMailboxPointerInIdtEntry (MailboxLocationPointer);
}
MailboxLocation = (UINT64)(UINTN)Mailbox;
MailboxLocationPointer = BuildGuidDataHob (
&gEfiDebugAgentGuid,
&MailboxLocation,
sizeof (UINT64)
);
//
// Initialize Debug Timer hardware and save its frequency
//
InitializeDebugTimer (&DebugTimerFrequency);
UpdateMailboxContent (Mailbox, DEBUG_MAILBOX_DEBUG_TIMER_FREQUENCY, DebugTimerFrequency);
//
// Update IDT entry to save the location pointer saved mailbox pointer
//
SetLocationSavedMailboxPointerInIdtEntry (MailboxLocationPointer);
//
// Save init arch type when debug agent initialized
//