Lee -- How will you prevent the OS from touching this device? It seems that preventing the BIOS from touching it only delays your pain ;-)
Can you disable this PCI device entirely? I.e. make it disappear from config space? Tim -----Original Message----- From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of Hamel, Lee M Sent: Wednesday, August 26, 2015 6:44 AM To: edk2-devel@lists.01.org Subject: [edk2] skip enumeration of a PCI device o I have a platform that has an override for MdeModulePkg\Bus\Pci\PciBusDxe. My goal is to remove this platform override. There are times when a particular stepping of silicon needs to be skipped due to a HW bug, e.g. on a particular Bus/Device/Function, read the PCI Config Header and check the DeviceID value. The following override files of PciBusDxe have changes: 1. PciEnumeratorSupport.c: skip enumeration of a PCI device that is a TXT device 2. PciDeviceSupport.c: skip video device registration It doesn't appear I can install a platform PCI protocol on EFI_PCI_PLATFORM_PROTOCOL and have only PciDevicePresent() overridden. This function touches the TXT device and causes the problem. I can't use EFI_PCI_PLATFORM_PROTOCOL and override a greater scope of code because the core package bus enumeration is called after the platform notification functions, thus the TXT device is still touched. I don't see a mechanism to tell core code to not touch particular PCI devices. A. Is there a mechanism to tell core code to not touch particular PCI devices? B. If A is false, then the route may be for me to submit code changes to achieve the goal. _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
