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OvmfPkg/PlatformInitLib: reorder PlatformQemuUc32BaseInitialization 

First handle the cases which do not need know the value of
PlatformInfoHob->LowMemory (microvm and cloudhv).  Then call
PlatformGetSystemMemorySizeBelow4gb() to get LowMemory.  Finally handle
the cases (q35 and pc) which need to look at LowMemory,

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Gerd Hoffmann 2023-01-17 13:16:29 +01:00 committed by mergify[bot]
parent c0a0b9bc35
commit 015a001b03
1 changed files with 8 additions and 8 deletions
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16
OvmfPkg/Library/PlatformInitLib/MemDetect.c
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@ -55,8 +55,15 @@ PlatformQemuUc32BaseInitialization (
return;
}
if (PlatformInfoHob->HostBridgeDevId == CLOUDHV_DEVICE_ID) {
PlatformInfoHob->Uc32Size = CLOUDHV_MMIO_HOLE_SIZE;
PlatformInfoHob->Uc32Base = CLOUDHV_MMIO_HOLE_ADDRESS;
return;
}
PlatformGetSystemMemorySizeBelow4gb (PlatformInfoHob);
if (PlatformInfoHob->HostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
PlatformGetSystemMemorySizeBelow4gb (PlatformInfoHob);
ASSERT (PcdGet64 (PcdPciExpressBaseAddress) <= MAX_UINT32);
ASSERT (PcdGet64 (PcdPciExpressBaseAddress) >= PlatformInfoHob->LowMemory);
@ -78,19 +85,12 @@ PlatformQemuUc32BaseInitialization (
return;
}
if (PlatformInfoHob->HostBridgeDevId == CLOUDHV_DEVICE_ID) {
PlatformInfoHob->Uc32Size = CLOUDHV_MMIO_HOLE_SIZE;
PlatformInfoHob->Uc32Base = CLOUDHV_MMIO_HOLE_ADDRESS;
return;
}
ASSERT (PlatformInfoHob->HostBridgeDevId == INTEL_82441_DEVICE_ID);
//
// On i440fx, start with the [LowerMemorySize, 4GB) range. Make sure one
// variable MTRR suffices by truncating the size to a whole power of two,
// while keeping the end affixed to 4GB. This will round the base up.
//
PlatformGetSystemMemorySizeBelow4gb (PlatformInfoHob);
PlatformInfoHob->Uc32Size = GetPowerOfTwo32 ((UINT32)(SIZE_4GB - PlatformInfoHob->LowMemory));
PlatformInfoHob->Uc32Base = (UINT32)(SIZE_4GB - PlatformInfoHob->Uc32Size);
//