BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3863
From this patch we start to restruct the functions which set PCDs into
two, one for PlatformInitLib, one for PlatformPei.
AddressWidthInitialization is the first one. It is splitted into two:
- PlatformAddressWidthInitialization is for PlatformInitLib
- AddressWidthInitialization is for PlatformPei. It calls
PlatformAddressWidthInitialization then set PCDs.
Below functions are also refined for PlatformInitLib:
- PlatformScanOrAdd64BitE820Ram
- PlatformGetSystemMemorySizeAbove4gb
- PlatformGetFirstNonAddress
All the SetPcd codes are removed from above functions.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
OvmfPkg/PlatformPei/MemDetect.c | 111 ++++++++++++++++++++------------
OvmfPkg/PlatformPei/Platform.c | 6 +-
2 files changed, 75 insertions(+), 42 deletions(-)
diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index 981a9ff28685..56011143759c 100644
--- a/OvmfPkg/PlatformPei/MemDetect.c
+++ b/OvmfPkg/PlatformPei/MemDetect.c
@@ -191,7 +191,7 @@ QemuUc32BaseInitialization (
Find the highest exclusive >=4GB RAM address, or produce memory resource
descriptor HOBs for RAM entries that start at or above 4GB.
- @param[out] MaxAddress If MaxAddress is NULL, then ScanOrAdd64BitE820Ram()
+ @param[out] MaxAddress If MaxAddress is NULL, then PlatformScanOrAdd64BitE820Ram()
produces memory resource descriptor HOBs for RAM
entries that start at or above 4GB.
@@ -212,7 +212,7 @@ QemuUc32BaseInitialization (
**/
STATIC
EFI_STATUS
-ScanOrAdd64BitE820Ram (
+PlatformScanOrAdd64BitE820Ram (
IN BOOLEAN AddHighHob,
OUT UINT64 *LowMemory OPTIONAL,
OUT UINT64 *MaxAddress OPTIONAL
@@ -387,7 +387,7 @@ GetSystemMemorySizeBelow4gb (
return (UINT32)GetHighestSystemMemoryAddressFromPvhMemmap (TRUE);
}
- Status = ScanOrAdd64BitE820Ram (FALSE, &LowerMemorySize, NULL);
+ Status = PlatformScanOrAdd64BitE820Ram (FALSE, &LowerMemorySize, NULL);
if ((Status == EFI_SUCCESS) && (LowerMemorySize > 0)) {
return (UINT32)LowerMemorySize;
}
@@ -409,7 +409,7 @@ GetSystemMemorySizeBelow4gb (
STATIC
UINT64
-GetSystemMemorySizeAbove4gb (
+PlatformGetSystemMemorySizeAbove4gb (
)
{
UINT32 Size;
@@ -436,7 +436,7 @@ GetSystemMemorySizeAbove4gb (
**/
STATIC
UINT64
-GetFirstNonAddress (
+PlatformGetFirstNonAddress (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
)
{
@@ -446,7 +446,6 @@ GetFirstNonAddress (
FIRMWARE_CONFIG_ITEM FwCfgItem;
UINTN FwCfgSize;
UINT64 HotPlugMemoryEnd;
- RETURN_STATUS PcdStatus;
//
// set FirstNonAddress to suppress incorrect compiler/analyzer warnings
@@ -460,9 +459,9 @@ GetFirstNonAddress (
// Otherwise, get the flat size of the memory above 4GB from the CMOS (which
// can only express a size smaller than 1TB), and add it to 4GB.
//
- Status = ScanOrAdd64BitE820Ram (FALSE, NULL, &FirstNonAddress);
+ Status = PlatformScanOrAdd64BitE820Ram (FALSE, NULL, &FirstNonAddress);
if (EFI_ERROR (Status)) {
- FirstNonAddress = BASE_4GB + GetSystemMemorySizeAbove4gb ();
+ FirstNonAddress = BASE_4GB + PlatformGetSystemMemorySizeAbove4gb ();
}
//
@@ -477,12 +476,6 @@ GetFirstNonAddress (
#endif
- //
- // Otherwise, in order to calculate the highest address plus one, we must
- // consider the 64-bit PCI host aperture too. Fetch the default size.
- //
- PlatformInfoHob->PcdPciMmio64Size = PcdGet64 (PcdPciMmio64Size);
-
//
// See if the user specified the number of megabytes for the 64-bit PCI host
// aperture. Accept an aperture size up to 16TB.
@@ -524,8 +517,6 @@ GetFirstNonAddress (
"%a: disabling 64-bit PCI host aperture\n",
__FUNCTION__
));
- PcdStatus = PcdSet64S (PcdPciMmio64Size, 0);
- ASSERT_RETURN_ERROR (PcdStatus);
}
//
@@ -576,26 +567,6 @@ GetFirstNonAddress (
//
PlatformInfoHob->PcdPciMmio64Base = ALIGN_VALUE (PlatformInfoHob->PcdPciMmio64Base, GetPowerOfTwo64 (PlatformInfoHob->PcdPciMmio64Size));
- if (PlatformInfoHob->BootMode != BOOT_ON_S3_RESUME) {
- //
- // The core PciHostBridgeDxe driver will automatically add this range to
- // the GCD memory space map through our PciHostBridgeLib instance; here we
- // only need to set the PCDs.
- //
- PcdStatus = PcdSet64S (PcdPciMmio64Base, PlatformInfoHob->PcdPciMmio64Base);
- ASSERT_RETURN_ERROR (PcdStatus);
- PcdStatus = PcdSet64S (PcdPciMmio64Size, PlatformInfoHob->PcdPciMmio64Size);
- ASSERT_RETURN_ERROR (PcdStatus);
-
- DEBUG ((
- DEBUG_INFO,
- "%a: Pci64Base=0x%Lx Pci64Size=0x%Lx\n",
- __FUNCTION__,
- PlatformInfoHob->PcdPciMmio64Base,
- PlatformInfoHob->PcdPciMmio64Size
- ));
- }
-
//
// The useful address space ends with the 64-bit PCI host aperture.
//
@@ -607,7 +578,8 @@ GetFirstNonAddress (
Initialize the mPhysMemAddressWidth variable, based on guest RAM size.
**/
VOID
-AddressWidthInitialization (
+EFIAPI
+PlatformAddressWidthInitialization (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
)
{
@@ -620,7 +592,7 @@ AddressWidthInitialization (
// The DXL IPL keys off of the physical address bits advertized in the CPU
// HOB. To conserve memory, we calculate the minimum address width here.
//
- FirstNonAddress = GetFirstNonAddress (PlatformInfoHob);
+ FirstNonAddress = PlatformGetFirstNonAddress (PlatformInfoHob);
PhysMemAddressWidth = (UINT8)HighBitSet64 (FirstNonAddress);
//
@@ -647,6 +619,65 @@ AddressWidthInitialization (
PlatformInfoHob->PhysMemAddressWidth = PhysMemAddressWidth;
}
+/**
+ Initialize the mPhysMemAddressWidth variable, based on guest RAM size.
+**/
+VOID
+AddressWidthInitialization (
+ IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
+ )
+{
+ RETURN_STATUS PcdStatus;
+
+ PlatformAddressWidthInitialization (PlatformInfoHob);
+
+ //
+ // If DXE is 32-bit, then we're done; PciBusDxe will degrade 64-bit MMIO
+ // resources to 32-bit anyway. See DegradeResource() in
+ // "PciResourceSupport.c".
+ //
+ #ifdef MDE_CPU_IA32
+ if (!FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {
+ return;
+ }
+
+ #endif
+
+ if (PlatformInfoHob->PcdPciMmio64Size == 0) {
+ if (PlatformInfoHob->BootMode != BOOT_ON_S3_RESUME) {
+ DEBUG ((
+ DEBUG_INFO,
+ "%a: disabling 64-bit PCI host aperture\n",
+ __FUNCTION__
+ ));
+ PcdStatus = PcdSet64S (PcdPciMmio64Size, 0);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ }
+
+ return;
+ }
+
+ if (PlatformInfoHob->BootMode != BOOT_ON_S3_RESUME) {
+ //
+ // The core PciHostBridgeDxe driver will automatically add this range to
+ // the GCD memory space map through our PciHostBridgeLib instance; here we
+ // only need to set the PCDs.
+ //
+ PcdStatus = PcdSet64S (PcdPciMmio64Base, PlatformInfoHob->PcdPciMmio64Base);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ PcdStatus = PcdSet64S (PcdPciMmio64Size, PlatformInfoHob->PcdPciMmio64Size);
+ ASSERT_RETURN_ERROR (PcdStatus);
+
+ DEBUG ((
+ DEBUG_INFO,
+ "%a: Pci64Base=0x%Lx Pci64Size=0x%Lx\n",
+ __FUNCTION__,
+ PlatformInfoHob->PcdPciMmio64Base,
+ PlatformInfoHob->PcdPciMmio64Size
+ ));
+ }
+}
+
/**
Calculate the cap for the permanent PEI memory.
**/
@@ -904,9 +935,9 @@ QemuInitializeRam (
// entries. Otherwise, create a single memory HOB with the flat >=4GB
// memory size read from the CMOS.
//
- Status = ScanOrAdd64BitE820Ram (TRUE, NULL, NULL);
+ Status = PlatformScanOrAdd64BitE820Ram (TRUE, NULL, NULL);
if (EFI_ERROR (Status)) {
- UpperMemorySize = GetSystemMemorySizeAbove4gb ();
+ UpperMemorySize = PlatformGetSystemMemorySizeAbove4gb ();
if (UpperMemorySize != 0) {
PlatformAddMemoryBaseSizeHob (BASE_4GB, UpperMemorySize);
}
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 3e0c56db57ed..7d370c9b8fa8 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -734,8 +734,10 @@ InitializePlatform (
DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n"));
- mPlatformInfoHob.SmmSmramRequire = FeaturePcdGet (PcdSmmSmramRequire);
- mPlatformInfoHob.SevEsIsEnabled = MemEncryptSevEsIsEnabled ();
+ mPlatformInfoHob.SmmSmramRequire = FeaturePcdGet (PcdSmmSmramRequire);
+ mPlatformInfoHob.SevEsIsEnabled = MemEncryptSevEsIsEnabled ();
+ mPlatformInfoHob.PcdPciMmio64Size = PcdGet64 (PcdPciMmio64Size);
+ mPlatformInfoHob.DefaultMaxCpuNumber = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);
PlatformDebugDumpCmos ();
--
2.29.2.windows.2
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