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OvmfPkg/Library/HardwareInfoLib: Fix memory allocation for a root bridge 

Currently, PciHostBridgeUtilityGetRootBridgesHostProvided allocates memory
for aperture structures without clearing memory. This causes garbage in
the Translation field, but the Base and Limit fields have the correct
values because they are copied from the HOST_BRIDGE_INFO fields in the
HardwareInfoPciHostBridgeHostBridgeHostBridgeGetApertures function.

RootBridge: PciRoot(0x0)
  Support/Attr: 70069 / 70069
    DmaAbove4G: No
NoExtConfSpace: No
     AllocAttr: 3 (CombineMemPMem Mem64Decode)
           Bus: 0 - 80 Translation=0
            Io: 6000 - FFFF Translation=5E9EB018
           Mem: 80000000 - DFFFFFFF Translation=0
    MemAbove4G: 600000000000 - 7FFFFFFFFFFF Translation=0
          PMem: FFFFFFFFFFFFFFFF - 0 Translation=0
   PMemAbove4G: FFFFFFFFFFFFFFFF - 0 Translation=0

Signed-off-by: Alexander Gryanko <xpahos@gmail.com>
This commit is contained in:
Alexander Gryanko 2024-10-05 03:17:17 +03:00 committed by mergify[bot]
parent 4928851899
commit 24d835a131
1 changed files with 6 additions and 0 deletions
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6
OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c
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@ -444,6 +444,12 @@ PciHostBridgeUtilityGetRootBridgesHostProvided (
PCI_ROOT_BRIDGE_APERTURE PMem;
PCI_ROOT_BRIDGE_APERTURE PMemAbove4G;
ZeroMem (&Io, sizeof (Io));
ZeroMem (&Mem, sizeof (Mem));
ZeroMem (&MemAbove4G, sizeof (MemAbove4G));
ZeroMem (&PMem, sizeof (PMem));
ZeroMem (&PMemAbove4G, sizeof (PMemAbove4G));
//
// Initialize the Hardware Info list head to start with an empty but valid
// list head.