ArmVirtualizationPkg: PlatformIntelBdsLib: kernel boot should provide ACPI

[mirror_edk2.git] / ArmPlatformPkg / ArmVirtualizationPkg / Library / PlatformIntelBdsLib / IntelBdsPlatform.c

diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c b/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
index a03e9097c39f97178517a1d2438b5a8a743a78d9..ae43f9c21dd2a00b5aa057798aef2b0d2ddda9d7 100644 (file)
--- a/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
+++ b/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
@@ -289,14 +289,17 @@ PlatformBdsPolicyBehavior (
   Status = PlatformBdsConnectConsole ();\r
   ASSERT_EFI_ERROR (Status);\r
 \r
+  BdsLibConnectAll ();\r
+\r
   //\r
-  // Process QEMU's -kernel command line option\r
+  // Process QEMU's -kernel command line option. Note that the kernel booted\r
+  // this way should receive ACPI tables, which is why we connect all devices\r
+  // first (see above) -- PCI enumeration blocks ACPI table installation, if\r
+  // there is a PCI host.\r
   //\r
   TryRunningQemuKernel ();\r
 \r
-  BdsLibConnectAll ();\r
   BdsLibEnumerateAllBootOption (BootOptionList);\r
-\r
   SetBootOrderFromQemu (BootOptionList);\r
   //\r
   // The BootOrder variable may have changed, reload the in-memory list with\r