Revision: 14289
http://edk2.svn.sourceforge.net/edk2/?rev=14289&view=rev
Author: niruiyu
Date: 2013-04-18 05:56:04 +0000 (Thu, 18 Apr 2013)
Log Message:
-----------
Enhance DebugCommunicationLibUsb to reset the debug port when the PORT_ENABLE
bit is not set.
Signed-off-by: Ruiyu Ni <[email protected]>
Reviewed-by: Feng Tian <[email protected]>
Modified Paths:
--------------
trunk/edk2/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb/DebugCommunicationLibUsb.c
Modified:
trunk/edk2/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb/DebugCommunicationLibUsb.c
===================================================================
---
trunk/edk2/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb/DebugCommunicationLibUsb.c
2013-04-18 05:46:13 UTC (rev 14288)
+++
trunk/edk2/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb/DebugCommunicationLibUsb.c
2013-04-18 05:56:04 UTC (rev 14289)
@@ -674,10 +674,16 @@
//
if (((MmioRead32((UINTN)&UsbDebugPortRegister->ControlStatus) &
(USB_DEBUG_PORT_OWNER | USB_DEBUG_PORT_IN_USE))
!= (USB_DEBUG_PORT_OWNER | USB_DEBUG_PORT_IN_USE)) ||
(Handle->Initialized == USBDBG_RESET)) {
+ DEBUG ((
+ EFI_D_INFO,
+ "UsbDbg: Need to reset the host controller. ControlStatus = %08x\n",
+ MmioRead32((UINTN)&UsbDebugPortRegister->ControlStatus)
+ ));
//
// If the host controller is halted, then reset and restart it.
//
if ((MmioRead32((UINTN)UsbStatus) & BIT12) != 0) {
+ DEBUG ((EFI_D_INFO, "UsbDbg: Reset the host controller.\n"));
//
// reset the host controller.
//
@@ -712,7 +718,9 @@
return RETURN_NOT_FOUND;
}
- if (Handle->Initialized != USBDBG_INIT_DONE) {
+ if (Handle->Initialized != USBDBG_INIT_DONE ||
+ (MmioRead32 ((UINTN) &UsbDebugPortRegister->ControlStatus) &
USB_DEBUG_PORT_ENABLE) == 0) {
+ DEBUG ((EFI_D_INFO, "UsbDbg: Reset the debug port.\n"));
//
// Reset the debug port
//
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