From 08021523f8a581437b07986d2c1876a7b6f0d282 Mon Sep 17 00:00:00 2001
From: Jeff Fan <jeff.fan@intel.com>
Date: Wed, 1 Apr 2015 07:51:15 +0000
Subject: SourceLevelDebugPkg: Use CPU Local APIC timer to handle timeout.

Use CPU Local APIC timer to handle timeout when read data from debug port, instead of the TimerLib in Debug Communication lib instances.
It could remove much duplicated code in Debug Communication Lib instances.

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@17089 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

(limited to 'SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c')

diff --git a/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c b/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c
index 6e7ff8e22e..b718e82e20 100644
--- a/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c
+++ b/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c
@@ -1,7 +1,7 @@
 /** @file
   SEC Core Debug Agent Library instance implementition.
 
-  Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -93,7 +93,7 @@ DebugReadBreakSymbol (
     //
     // Try to read the start symbol
     //
-    DebugPortReadBuffer (Handle, Data8, 1, 0);
+    DebugAgentReadBuffer (Handle, Data8, 1, 0);
     if (*Data8 == DEBUG_STARTING_SYMBOL_ATTACH) {
       *BreakSymbol = *Data8;
       DebugAgentMsgPrint (DEBUG_AGENT_INFO, "Debug Timer attach symbol received %x", *BreakSymbol);
@@ -375,6 +375,7 @@ InitializeDebugAgent (
   UINT64                           MailboxLocation;
   UINT64                           *MailboxLocationPointer;
   EFI_PHYSICAL_ADDRESS             Address;
+  UINT32                           DebugTimerFrequency;
 
   DisableInterrupts ();
 
@@ -399,8 +400,11 @@ InitializeDebugAgent (
     // Save init arch type when debug agent initialized
     //
     SetDebugFlag (DEBUG_AGENT_FLAG_INIT_ARCH, DEBUG_ARCH_SYMBOL);
-
-    InitializeDebugTimer ();
+    //
+    // Initialize Debug Timer hardware and save its frequency
+    //
+    InitializeDebugTimer (&DebugTimerFrequency);
+    UpdateMailboxContent (Mailbox, DEBUG_MAILBOX_DEBUG_TIMER_FREQUENCY, DebugTimerFrequency);
 
     Phase2Context.InitFlag = InitFlag;
     Phase2Context.Context  = Context;
@@ -524,8 +528,11 @@ InitializeDebugAgent (
                                &MailboxLocation,
                                sizeof (UINT64)
                                );
-
-    InitializeDebugTimer ();
+    //
+    // 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
     //
-- 
cgit