diff options
Diffstat (limited to 'ArmPlatformPkg/ArmRealViewEbPkg/Library/DebugAgentTimerLib/DebugAgentTimerLib.c')
-rw-r--r-- | ArmPlatformPkg/ArmRealViewEbPkg/Library/DebugAgentTimerLib/DebugAgentTimerLib.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmRealViewEbPkg/Library/DebugAgentTimerLib/DebugAgentTimerLib.c b/ArmPlatformPkg/ArmRealViewEbPkg/Library/DebugAgentTimerLib/DebugAgentTimerLib.c new file mode 100644 index 0000000000..e62384217f --- /dev/null +++ b/ArmPlatformPkg/ArmRealViewEbPkg/Library/DebugAgentTimerLib/DebugAgentTimerLib.c @@ -0,0 +1,80 @@ +/** @file
+ Template for ArmEb DebugAgentLib.
+
+ For ARM we reserve FIQ for the Debug Agent Timer. We don't care about
+ laytency as we only really need the timer to run a few times a second
+ (how fast can some one type a ctrl-c?), but it works much better if
+ the interrupt we are using to break into the debugger is not being
+ used, and masked, by the system.
+
+ Copyright (c) 2008 - 2010, Apple Inc. 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
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Base.h>
+
+#include <Library/DebugAgentTimerLib.h>
+
+#include <ArmEb/ArmEb.h>
+
+
+/**
+ Setup all the hardware needed for the debug agents timer.
+
+ This function is used to set up debug enviroment.
+
+**/
+VOID
+EFIAPI
+DebugAgentTimerIntialize (
+ VOID
+ )
+{
+ // Map Timer to FIQ
+}
+
+
+/**
+ Set the period for the debug agent timer. Zero means disable the timer.
+
+ @param[in] TimerPeriodMilliseconds Frequency of the debug agent timer.
+
+**/
+VOID
+EFIAPI
+DebugAgentTimerSetPeriod (
+ IN UINT32 TimerPeriodMilliseconds
+ )
+{
+ if (TimerPeriodMilliseconds == 0) {
+ // Disable timer and Disable FIQ
+ return;
+ }
+
+ // Set timer period and unmask FIQ
+}
+
+
+/**
+ Perform End Of Interrupt for the debug agent timer. This is called in the
+ interrupt handler after the interrupt has been processed.
+
+**/
+VOID
+EFIAPI
+DebugAgentTimerEndOfInterrupt (
+ VOID
+ )
+{
+ // EOI Timer interrupt for FIQ
+}
+
+
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