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authorLaszlo Ersek <lersek@redhat.com>2015-02-23 16:03:11 +0000
committerlersek <lersek@Edk2>2015-02-23 16:03:11 +0000
commit120a25c2874081ef69024be4f3fdc9707146745c (patch)
treeb488b16d1e017b1192ca8e54b98b454185560699 /ArmPlatformPkg
parentaca7e8b6d42533bd2977c9d36574da4df2710f45 (diff)
downloadedk2-platforms-120a25c2874081ef69024be4f3fdc9707146745c.tar.xz
ArmVirtualizationPkg/PciHostBridgeDxe: abort if there's no PCI host bridge
If VirtFdtDxe found no PCI host in the DTB, then the config space base address will be left at zero -- the default is set in the DSC --, and we should exit PciHostBridgeDxe immediately. This causes gEfiPciRootBridgeIoProtocolGuid not to be installed, which in turn prevents MdeModulePkg/Bus/Pci/PciBusDxe from binding (see PciBusDriverBindingSupported()). Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Olivier Martin <Olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16898 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg')
-rw-r--r--ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridge.c6
-rw-r--r--ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf1
2 files changed, 7 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridge.c b/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridge.c
index ced7528a2e..50f61cbfff 100644
--- a/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridge.c
+++ b/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridge.c
@@ -85,6 +85,7 @@ PCI_HOST_BRIDGE_INSTANCE mPciHostBridgeInstanceTemplate = {
@param ImageHandle Handle of driver image
@param SystemTable Point to EFI_SYSTEM_TABLE
+ @retval EFI_ABORTED PCI host bridge not present
@retval EFI_OUT_OF_RESOURCES Can not allocate memory resource
@retval EFI_DEVICE_ERROR Can not install the protocol instance
@retval EFI_SUCCESS Success to initialize the Pci host bridge.
@@ -102,6 +103,11 @@ InitializePciHostBridge (
PCI_HOST_BRIDGE_INSTANCE *HostBridge;
PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ if (PcdGet64 (PcdPciExpressBaseAddress) == 0) {
+ DEBUG ((EFI_D_INFO, "%a: PCI host bridge not present\n", __FUNCTION__));
+ return EFI_ABORTED;
+ }
+
mDriverImageHandle = ImageHandle;
mResAperture[0][0].BusBase = PcdGet32 (PcdPciBusMin);
diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf b/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf
index be3200dedb..5497fa61d2 100644
--- a/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf
+++ b/ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf
@@ -58,6 +58,7 @@
gArmPlatformTokenSpaceGuid.PcdPciIoTranslation
gArmPlatformTokenSpaceGuid.PcdPciMmio32Base
gArmPlatformTokenSpaceGuid.PcdPciMmio32Size
+ gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
[depex]
gEfiMetronomeArchProtocolGuid