Maurice, When PcdPciDisableBusEnumeration is TRUE, PciBus driver assumes the bus number and IO/MMIO BAR are all initialized before it gets started, so it doesn't call SetBusNumbers(). It's also true for PciBusNoEnumeration driver in DuetPkg. I compared the PciBus and PciBusNoEnumeration before, the major gap is PciBus won't dispatch the option roms collected by PciRootBridgeNoEnumeration driver.
Another gap is the PciRootBridgeNoEnumeration needs a slightly change in order to work with PciBus driver. Can you try this patch? Thanks, Ray -----Original Message----- From: Ma, Maurice Sent: Saturday, May 9, 2015 6:33 AM To: Justen, Jordan L; Agyeman, Prince Cc: reza.jel...@tuhh.de; Zeng, Star; Ni, Ruiyu; ler...@redhat.com; edk2-devel@lists.sourceforge.net Subject: RE: [edk2] [PATCH] CorebootPayloadPkg: Replace PciHostBridge driver with PciRootBridgeNoEnumeration Hi, Jordan, Thank you for your feedback. Ideally I don't want CorebootPayloadPkg to depend on DuetPkg. But on the other side I hesitate to duplicate drivers into the CorebootPayloadPkg from other packages. If I have to make a choice, I'd like the former. I just tried to use the standard PciBus driver with PcdPciDisableBusEnumeration set to TRUE. However It caused boot failure on my Baytrail platform. I think it might needs some slightly changes to make it behavior the same way as PciBusNoEnumeration in DuetPkg. However, even with the standard PciBus driver, I still need a PciRootBridgeNoEnumeration equivalent driver. By looking into the PciBus driver code, I found PciBus driver will not call PCI host bridge resource allocation interface SetBusNumbers() when PcdPciDisableBusEnumeration is set to TRUE. As a result the PCI root bridge bus range is always 0 because nobody will updated it. In this case Shell PCI command will think only bus 0 exists and no devices on other buses will be listed. For SataControllerDxe driver, I don't want to duplicate it CorebootPayloadPkg again if it has been done in OvmfPkg. Unless we have a more functional common drivers to replace the current ones used in CorebootPayloadPkg, I would prefer the current way. Please let me know if you have any other ideas. Thanks Maurice -----Original Message----- From: Justen, Jordan L Sent: Friday, May 08, 2015 1:03 PM To: Ma, Maurice; edk2-devel@lists.sourceforge.net; Agyeman, Prince Cc: reza.jel...@tuhh.de; Zeng, Star; Ni, Ruiyu; ler...@redhat.com Subject: Re: [edk2] [PATCH] CorebootPayloadPkg: Replace PciHostBridge driver with PciRootBridgeNoEnumeration Can you use git send-email to send your patches? (Note the email double-space strangeness below) I don't think CorebootPayloadPkg should depend on DuetPkg. Regarding the PciEnumeration issue, in OVMF we set gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration to TRUE at runtime for Xen to disable enumeration. Maybe CorebootPayloadPkg could just set it as a fixed PCD to TRUE? Regarding using DuetPkg/SataControllerDxe in CorebootPayloadPkg, well, we tried to create a common module under PcAtChipsetPkg to share with OVMF, but it was rejected. The recommendation was to duplicate the code in OVMF: http://permalink.gmane.org/gmane.comp.bios.tianocore.devel/9036 Shouldn't CorebootPayloadPkg then do something similar? One unfortunate outcome of the SataControllerDxe discussion for OVMF is that we still haven't managed to enable SATA in OVMF... But, I think this is maybe because Reza got tired of trying to work with us. :) -Jordan On 2015-05-08 09:02:11, Ma, Maurice wrote: > Current CorebootPayloadPkg uses PciHostBridge and > PciBusNoEnumeration > > driver. It will cause the PCI bus resource incorrectly set in root > > bridge instance. As a result all PCI devices behind a PCI bridge > will > > not show up in Shell 'PCI' command. > > > > To resolve it use PciRootBridgeNoEnumeration driver instead. > > > > Contributed-under: TianoCore Contribution Agreement 1.0 > > Signed-off-by: Maurice Ma <maurice...@intel.com> > > --- > > CorebootPayloadPkg/CorebootPayloadPkg.fdf | 2 +- > > CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc | 2 +- > > CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc | 4 ++-- > > 3 files changed, 4 insertions(+), 4 deletions(-) > > > > diff --git a/CorebootPayloadPkg/CorebootPayloadPkg.fdf > b/CorebootPayloadPkg/CorebootPayloadPkg.fdf > > index a1e72e7..810dcb1 100644 > > --- a/CorebootPayloadPkg/CorebootPayloadPkg.fdf > > +++ b/CorebootPayloadPkg/CorebootPayloadPkg.fdf > > @@ -110,7 +110,7 @@ INF > MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.inf > > # > > # PCI Support > > # > > -INF PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf > > +INF > DuetPkg/PciRootBridgeNoEnumerationDxe/PciRootBridgeNoEnumeration.inf > > INF DuetPkg/PciBusNoEnumerationDxe/PciBusNoEnumeration.inf > > > > # > > diff --git a/CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc > b/CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc > > index feae027..a661f5d 100644 > > --- a/CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc > > +++ b/CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc > > @@ -312,7 +312,7 @@ > > # > > # PCI Support > > # > > - PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf > > + > DuetPkg/PciRootBridgeNoEnumerationDxe/PciRootBridgeNoEnumeration.inf > > DuetPkg/PciBusNoEnumerationDxe/PciBusNoEnumeration.inf > > > > # > > diff --git a/CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc > b/CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc > > index d954666..ecd12fb 100644 > > --- a/CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc > > +++ b/CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc > > @@ -313,8 +313,8 @@ > > > > # > > # PCI Support > > - # > > - PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf > > + # > > + > DuetPkg/PciRootBridgeNoEnumerationDxe/PciRootBridgeNoEnumeration.inf > > DuetPkg/PciBusNoEnumerationDxe/PciBusNoEnumeration.inf > > > > # > > -- > > 1.8.3.1 > > > > Thanks > > Maurice
pcibridge_noenum.patch
Description: pcibridge_noenum.patch
------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
_______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
