Because you are using SerialDxe (see 'VenHw(D3987D4B-971A-435F-8CAF-4967EB627241)'), ensure you have the following drivers in your DSC and FDF files: - MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatformDxe.inf - MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterDxe.inf - MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
ConSplitterDxe is the driver that will set gST->ConOut in this scenario. Olivier > -----Original Message----- > From: Bhupesh Sharma [mailto:bhupesh.sha...@freescale.com] > Sent: 02 December 2013 11:09 > To: Olivier Martin; 'Andrew Fish'; 'edk2-devel@lists.sourceforge.net' > Subject: gST->ConOut is NULL and Timer issues (Was: RE: SerialPrint not > working in DxeServicesLib.c) > > Hi, > > I managed to trace down the issues with my UEFI ported code for a > Cortex-A9 MP core based SoC. > > I see two issues (after solving a few on the way) on which I cannot > seem to make any headway. > > 1. gST->ConOut is NULL causing the Print routines inside > StartDefaultBootOnTimeout > > (https://github.com/tianocore/edk2/blob/master/ArmPlatformPkg/Bds/Bds.c > #L327), to not print > anything on the UART console. > > - At first, I suspected this to be an issue with my .dsc file as I > don't have a LCD available on my SoC > and I had serial port as well as (a left over) LCD configured as > SIMPLE TEXT protocols for ConOut. > I have hence changed my .dsc to something like: > > # Use the serial console for both ConIn & ConOut > gArmPlatformTokenSpaceGuid.PcdDefaultConOutPaths|L"VenHw(D3987D4B- > 971A-435F-8CAF-4967EB627241)/Uart(115200,8,N,1)/VenPcAnsi();" > gArmPlatformTokenSpaceGuid.PcdDefaultConInPaths|L"VenHw(D3987D4B- > 971A-435F-8CAF-4967EB627241)/Uart(115200,8,N,1)/VenPcAnsi()" > > However, still I see that gST->ConOut is NULL (via the DS-5 source > debugger). > > 2. Timer support in UEFI: > > - For every BoardPkg (e.g. ArmPlatformPkg/SP804, BeagleBoardPkg and > Samsung etc), I can see that there are two Timer helper layers: > > # [1] Timer Dxe Driver: > > https://github.com/tianocore/edk2/tree/master/ArmPlatformPkg/Driv > ers/SP804TimerDxe > > # [2] Timer Lib: > > https://github.com/tianocore/edk2/tree/master/ArmPlatformPkg/Libr > ary/SP804TimerLib > > > When I start to look at this code it seems that the UEFI code > requires support for atleast 2 timers: Performance Timer (used in [1]) > and another free SoC timer which is used to provide delays ([2]). > > Is this understanding correct? Does UEFI require atleast 2 timers > to be supported by the SoC and are these timers used in parallel > by the UEFI framework? > > Thanks for any pointers on the above two aspects. > > Regards, > Bhupesh > > > > -----Original Message----- > > From: Sharma Bhupesh-B45370 > > Sent: Tuesday, November 26, 2013 5:02 PM > > To: Olivier Martin; 'Andrew Fish'; edk2-devel@lists.sourceforge.net > > Cc: Kushwaha Prabhakar-B32579 > > Subject: RE: SerialPrint not working in DxeServicesLib.c > > > > Hi Olivier, > > > > Thanks for your mail. > > > > I have a SerialPortLib which tries to configure Serial controller > > specific to my board (so *no* 'SerialPortLib' pointing to > > 'MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf' > > in my DSC). > > > > I am getting the UEFI firmware .. banner at the very start. > > > > I will now try to add some SerialPortWrite() before calling > > GetSectionFromAnyFv(). > > > > Regards, > > Bhupesh > > > > > > > -----Original Message----- > > > From: Olivier Martin [mailto:olivier.mar...@arm.com] > > > Sent: Tuesday, November 26, 2013 4:27 PM > > > To: Sharma Bhupesh-B45370; 'Andrew Fish'; edk2- > > > de...@lists.sourceforge.net > > > Cc: Kushwaha Prabhakar-B32579 > > > Subject: RE: SerialPrint not working in DxeServicesLib.c > > > > > > Sorry to not reply earlier, I was on holiday in the last two weeks. > > > > > > If you do not see any output from the serial, ensure your are using > > > the appropriate 'SerialPortLib'. > > > Check in your DSC file, there is no 'SerialPortLib' pointing to > > > 'MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf'. > > > Example: > > > > > > [LibraryClasses.common] > > > (...) > > > > > > > SerialPortLib|MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNu > > > SerialPortLib|ll > > > SerialPortLib|.inf > > > (...) > > > > > > SerialPortLib should use the implementation for your Serial > controller. > > > > > > Try also to add some SerialPortWrite() before calling > > > GetSectionFromAnyFv(). > > > I would not be surprised if the crash happens much earlier than the > > > DXE phase. > > > > > > > > > > -----Original Message----- > > > > From: Bhupesh Sharma [mailto:bhupesh.sha...@freescale.com] > > > > Sent: 20 November 2013 11:50 > > > > To: 'Andrew Fish'; 'edk2-devel@lists.sourceforge.net'; Olivier > > > > Martin > > > > Cc: Prabhakar Kushwaha > > > > Subject: RE: SerialPrint not working in DxeServicesLib.c > > > > > > > > I don't know why but I didn't get any mail from the mail list > server > > > > for my original mail below, though I can see same in the mail > list > > > > archives. > > > > > > > > Adding Andrew.. > > > > > > > > Can you guys please help me with the issue mentioned below. > > > > > > > > Regards, > > > > Bhupesh > > > > > > > > > -----Original Message----- > > > > > From: Sharma Bhupesh-B45370 > > > > > Sent: Tuesday, November 19, 2013 4:25 PM > > > > > To: 'edk2-devel@lists.sourceforge.net'; 'Olivier Martin' > > > > > Cc: 'boot-architect...@lists.linaro.org'; Kushwaha > > > > > Prabhakar-B32579 > > > > > Subject: SerialPrint not working in DxeServicesLib.c > > > > > > > > > > Hi List, > > > > > > > > > > I am experiencing a Data Abort inside function > > 'GetSectionFromAnyFv' > > > > in > > > > > file 'DxeServicesLib.c' > > > > > on my ARMv7 UEFI platform. > > > > > > > > > > To debug the same I added some print messages like: > > > > > > > > > > /* Added for debugging */ > > > > > CHAR8 Buffer1[100]; > > > > > UINTN CharCount; > > > > > CharCount = AsciiSPrint (Buffer1,sizeof (Buffer1),"Inside > > > > Func\n\r"); > > > > > SerialPortWrite ((UINT8 *) Buffer1, CharCount); > > > > > > > > > > > > > > > And also something like: > > > > > SerialPrint ("Inside Func\n\r"); > > > > > > > > > > I have included: > > > > > #include <Library/PrintLib.h> > > > > > #include <Library/SerialPortLib.h> > > > > > > > > > > and defined: > > > > > > > > > > #define SerialPrint(txt) SerialPortWrite ((UINT8*)(txt), > > > > > AsciiStrLen(txt)+1); > > > > > > > > > > I still cannot see any debug prints on the UART (placed right > > > > > after > > > > the > > > > > entry point of 'GetSectionFromAnyFv' function). > > > > > Debugger (DS-5) suggests that the crash is inside > > > > 'GetSectionFromAnyFv' > > > > > itself. > > > > > > > > > > I get the UEFI firmware <version xx built at xx on xx) and Data > > > > > Abort Exception PC at xx prints on the console, but no prints > from > > > > > 'DxeServicesLib.c' > > > > > > > > > > Any pointers to what I may be missing here. > > > > > > > > > > Regards, > > > > > Bhupesh > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. 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