X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OvmfPkg%2FPlatformPei%2FPlatform.c;h=0876316eefbc7643aade7f8b1028a3ddd7e87fb9;hp=7363702beecb2f0d0d55276a5a17f302ca36d052;hb=d4534984111328ff839fbf51be2779a98bfefa30;hpb=447d264115c476142f884af0be287622cd244423
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 7363702bee..0876316eef 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -1,16 +1,10 @@
/**@file
Platform PEI driver
- Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.
Copyright (c) 2011, Andrei Warkentin
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -22,6 +16,7 @@
//
// The Library classes this module consumes
//
+#include
#include
#include
#include
@@ -30,14 +25,13 @@
#include
#include
#include
+#include
+#include
#include
#include
#include
#include
-#include
-#include
-#include
-#include
+#include
#include "Platform.h"
#include "Cmos.h"
@@ -63,6 +57,14 @@ EFI_PEI_PPI_DESCRIPTOR mPpiBootMode[] = {
};
+UINT16 mHostBridgeDevId;
+
+EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;
+
+BOOLEAN mS3Supported = FALSE;
+
+UINT32 mMaxCpuCount;
+
VOID
AddIoMemoryBaseSizeHob (
EFI_PHYSICAL_ADDRESS MemoryBase,
@@ -83,7 +85,8 @@ AddIoMemoryBaseSizeHob (
VOID
AddReservedMemoryBaseSizeHob (
EFI_PHYSICAL_ADDRESS MemoryBase,
- UINT64 MemorySize
+ UINT64 MemorySize,
+ BOOLEAN Cacheable
)
{
BuildResourceDescriptorHob (
@@ -91,6 +94,12 @@ AddReservedMemoryBaseSizeHob (
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
+ (Cacheable ?
+ EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE :
+ 0
+ ) |
EFI_RESOURCE_ATTRIBUTE_TESTED,
MemoryBase,
MemorySize
@@ -139,44 +148,16 @@ AddMemoryRangeHob (
VOID
-AddUntestedMemoryBaseSizeHob (
- EFI_PHYSICAL_ADDRESS MemoryBase,
- UINT64 MemorySize
- )
-{
- BuildResourceDescriptorHob (
- EFI_RESOURCE_SYSTEM_MEMORY,
- EFI_RESOURCE_ATTRIBUTE_PRESENT |
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
- EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE,
- MemoryBase,
- MemorySize
- );
-}
-
-
-VOID
-AddUntestedMemoryRangeHob (
- EFI_PHYSICAL_ADDRESS MemoryBase,
- EFI_PHYSICAL_ADDRESS MemoryLimit
- )
-{
- AddUntestedMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
-}
-
-VOID
-XenMemMapInitialization (
+MemMapInitialization (
VOID
)
{
- EFI_E820_ENTRY64 *E820Map;
- UINT32 E820EntriesCount;
- EFI_STATUS Status;
+ UINT64 PciIoBase;
+ UINT64 PciIoSize;
+ RETURN_STATUS PcdStatus;
- DEBUG ((EFI_D_INFO, "Using memory map provided by Xen\n"));
+ PciIoBase = 0xC000;
+ PciIoSize = 0x4000;
//
// Create Memory Type Information HOB
@@ -187,157 +168,323 @@ XenMemMapInitialization (
sizeof(mDefaultMemoryTypeInformation)
);
- //
- // Add PCI IO Port space available for PCI resource allocations.
- //
- BuildResourceDescriptorHob (
- EFI_RESOURCE_IO,
- EFI_RESOURCE_ATTRIBUTE_PRESENT |
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED,
- 0xC000,
- 0x4000
- );
-
//
// Video memory + Legacy BIOS region
//
AddIoMemoryRangeHob (0x0A0000, BASE_1MB);
- //
- // Parse RAM in E820 map
- //
- Status = XenGetE820Map(&E820Map, &E820EntriesCount);
-
- ASSERT_EFI_ERROR (Status);
-
- if (E820EntriesCount > 0) {
- EFI_E820_ENTRY64 *Entry;
- UINT32 Loop;
+ if (!mXen) {
+ UINT32 TopOfLowRam;
+ UINT64 PciExBarBase;
+ UINT32 PciBase;
+ UINT32 PciSize;
- for (Loop = 0; Loop < E820EntriesCount; Loop++) {
- Entry = E820Map + Loop;
+ TopOfLowRam = GetSystemMemorySizeBelow4gb ();
+ PciExBarBase = 0;
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
+ //
+ // The MMCONFIG area is expected to fall between the top of low RAM and
+ // the base of the 32-bit PCI host aperture.
+ //
+ PciExBarBase = FixedPcdGet64 (PcdPciExpressBaseAddress);
+ ASSERT (TopOfLowRam <= PciExBarBase);
+ ASSERT (PciExBarBase <= MAX_UINT32 - SIZE_256MB);
+ PciBase = (UINT32)(PciExBarBase + SIZE_256MB);
+ } else {
+ PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
+ }
+ //
+ // address purpose size
+ // ------------ -------- -------------------------
+ // max(top, 2g) PCI MMIO 0xFC000000 - max(top, 2g)
+ // 0xFC000000 gap 44 MB
+ // 0xFEC00000 IO-APIC 4 KB
+ // 0xFEC01000 gap 1020 KB
+ // 0xFED00000 HPET 1 KB
+ // 0xFED00400 gap 111 KB
+ // 0xFED1C000 gap (PIIX4) / RCRB (ICH9) 16 KB
+ // 0xFED20000 gap 896 KB
+ // 0xFEE00000 LAPIC 1 MB
+ //
+ PciSize = 0xFC000000 - PciBase;
+ AddIoMemoryBaseSizeHob (PciBase, PciSize);
+ PcdStatus = PcdSet64S (PcdPciMmio32Base, PciBase);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ PcdStatus = PcdSet64S (PcdPciMmio32Size, PciSize);
+ ASSERT_RETURN_ERROR (PcdStatus);
+
+ AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);
+ AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
+ AddIoMemoryBaseSizeHob (ICH9_ROOT_COMPLEX_BASE, SIZE_16KB);
+ //
+ // Note: there should be an
+ //
+ // AddIoMemoryBaseSizeHob (PciExBarBase, SIZE_256MB);
+ //
+ // call below, just like the one above for RCBA. However, Linux insists
+ // that the MMCONFIG area be marked in the E820 or UEFI memory map as
+ // "reserved memory" -- Linux does not content itself with a simple gap
+ // in the memory map wherever the MCFG ACPI table points to.
//
- // Only care about RAM
+ // This appears to be a safety measure. The PCI Firmware Specification
+ // (rev 3.1) says in 4.1.2. "MCFG Table Description": "The resources can
+ // *optionally* be returned in [...] EFIGetMemoryMap as reserved memory
+ // [...]". (Emphasis added here.)
//
- if (Entry->Type != EfiAcpiAddressRangeMemory) {
- continue;
- }
+ // Normally we add memory resource descriptor HOBs in
+ // QemuInitializeRam(), and pre-allocate from those with memory
+ // allocation HOBs in InitializeRamRegions(). However, the MMCONFIG area
+ // is most definitely not RAM; so, as an exception, cover it with
+ // uncacheable reserved memory right here.
+ //
+ AddReservedMemoryBaseSizeHob (PciExBarBase, SIZE_256MB, FALSE);
+ BuildMemoryAllocationHob (PciExBarBase, SIZE_256MB,
+ EfiReservedMemoryType);
+ }
+ AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);
- if (Entry->BaseAddr >= BASE_4GB) {
- AddUntestedMemoryBaseSizeHob (Entry->BaseAddr, Entry->Length);
- } else {
- AddMemoryBaseSizeHob (Entry->BaseAddr, Entry->Length);
- }
+ //
+ // On Q35, the IO Port space is available for PCI resource allocations from
+ // 0x6000 up.
+ //
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
+ PciIoBase = 0x6000;
+ PciIoSize = 0xA000;
+ ASSERT ((ICH9_PMBASE_VALUE & 0xF000) < PciIoBase);
+ }
+ }
- MtrrSetMemoryAttribute (Entry->BaseAddr, Entry->Length, CacheWriteBack);
+ //
+ // Add PCI IO Port space available for PCI resource allocations.
+ //
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_IO,
+ EFI_RESOURCE_ATTRIBUTE_PRESENT |
+ EFI_RESOURCE_ATTRIBUTE_INITIALIZED,
+ PciIoBase,
+ PciIoSize
+ );
+ PcdStatus = PcdSet64S (PcdPciIoBase, PciIoBase);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ PcdStatus = PcdSet64S (PcdPciIoSize, PciIoSize);
+ ASSERT_RETURN_ERROR (PcdStatus);
+}
+
+EFI_STATUS
+GetNamedFwCfgBoolean (
+ IN CHAR8 *FwCfgFileName,
+ OUT BOOLEAN *Setting
+ )
+{
+ EFI_STATUS Status;
+ FIRMWARE_CONFIG_ITEM FwCfgItem;
+ UINTN FwCfgSize;
+ UINT8 Value[3];
+
+ Status = QemuFwCfgFindFile (FwCfgFileName, &FwCfgItem, &FwCfgSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ if (FwCfgSize > sizeof Value) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+ QemuFwCfgSelectItem (FwCfgItem);
+ QemuFwCfgReadBytes (FwCfgSize, Value);
+
+ if ((FwCfgSize == 1) ||
+ (FwCfgSize == 2 && Value[1] == '\n') ||
+ (FwCfgSize == 3 && Value[1] == '\r' && Value[2] == '\n')) {
+ switch (Value[0]) {
+ case '0':
+ case 'n':
+ case 'N':
+ *Setting = FALSE;
+ return EFI_SUCCESS;
+
+ case '1':
+ case 'y':
+ case 'Y':
+ *Setting = TRUE;
+ return EFI_SUCCESS;
+
+ default:
+ break;
}
}
+ return EFI_PROTOCOL_ERROR;
}
+#define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName) \
+ do { \
+ BOOLEAN Setting; \
+ RETURN_STATUS PcdStatus; \
+ \
+ if (!EFI_ERROR (GetNamedFwCfgBoolean ( \
+ "opt/ovmf/" #TokenName, &Setting))) { \
+ PcdStatus = PcdSetBoolS (TokenName, Setting); \
+ ASSERT_RETURN_ERROR (PcdStatus); \
+ } \
+ } while (0)
VOID
-MemMapInitialization (
- EFI_PHYSICAL_ADDRESS TopOfMemory
+NoexecDxeInitialization (
+ VOID
)
{
+ UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdPropertiesTableEnable);
+ UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdSetNxForStack);
+}
+
+VOID
+PciExBarInitialization (
+ VOID
+ )
+{
+ union {
+ UINT64 Uint64;
+ UINT32 Uint32[2];
+ } PciExBarBase;
+
//
- // Create Memory Type Information HOB
+ // We only support the 256MB size for the MMCONFIG area:
+ // 256 buses * 32 devices * 8 functions * 4096 bytes config space.
//
- BuildGuidDataHob (
- &gEfiMemoryTypeInformationGuid,
- mDefaultMemoryTypeInformation,
- sizeof(mDefaultMemoryTypeInformation)
- );
-
+ // The masks used below enforce the Q35 requirements that the MMCONFIG area
+ // be (a) correctly aligned -- here at 256 MB --, (b) located under 64 GB.
//
- // Add PCI IO Port space available for PCI resource allocations.
+ // Note that (b) also ensures that the minimum address width we have
+ // determined in AddressWidthInitialization(), i.e., 36 bits, will suffice
+ // for DXE's page tables to cover the MMCONFIG area.
//
- BuildResourceDescriptorHob (
- EFI_RESOURCE_IO,
- EFI_RESOURCE_ATTRIBUTE_PRESENT |
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED,
- 0xC000,
- 0x4000
- );
+ PciExBarBase.Uint64 = FixedPcdGet64 (PcdPciExpressBaseAddress);
+ ASSERT ((PciExBarBase.Uint32[1] & MCH_PCIEXBAR_HIGHMASK) == 0);
+ ASSERT ((PciExBarBase.Uint32[0] & MCH_PCIEXBAR_LOWMASK) == 0);
//
- // Video memory + Legacy BIOS region
+ // Clear the PCIEXBAREN bit first, before programming the high register.
//
- AddIoMemoryRangeHob (0x0A0000, BASE_1MB);
+ PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW), 0);
//
- // address purpose size
- // ------------ -------- -------------------------
- // max(top, 2g) PCI MMIO 0xFC000000 - max(top, 2g)
- // 0xFC000000 gap 44 MB
- // 0xFEC00000 IO-APIC 4 KB
- // 0xFEC01000 gap 1020 KB
- // 0xFED00000 HPET 1 KB
- // 0xFED00400 gap 1023 KB
- // 0xFEE00000 LAPIC 1 MB
- //
- AddIoMemoryRangeHob (TopOfMemory < BASE_2GB ? BASE_2GB : TopOfMemory, 0xFC000000);
- AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);
- AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);
- AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);
+ // Program the high register. Then program the low register, setting the
+ // MMCONFIG area size and enabling decoding at once.
+ //
+ PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_HIGH), PciExBarBase.Uint32[1]);
+ PciWrite32 (
+ DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW),
+ PciExBarBase.Uint32[0] | MCH_PCIEXBAR_BUS_FF | MCH_PCIEXBAR_EN
+ );
}
-
VOID
MiscInitialization (
VOID
)
{
+ UINTN PmCmd;
+ UINTN Pmba;
+ UINT32 PmbaAndVal;
+ UINT32 PmbaOrVal;
+ UINTN AcpiCtlReg;
+ UINT8 AcpiEnBit;
+ RETURN_STATUS PcdStatus;
+
//
// Disable A20 Mask
//
IoOr8 (0x92, BIT1);
//
- // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
+ // Build the CPU HOB with guest RAM size dependent address width and 16-bits
+ // of IO space. (Side note: unlike other HOBs, the CPU HOB is needed during
+ // S3 resume as well, so we build it unconditionally.)
//
- BuildCpuHob (36, 16);
+ BuildCpuHob (mPhysMemAddressWidth, 16);
//
- // If PMREGMISC/PMIOSE is set, assume the ACPI PMBA has been configured (for
- // example by Xen) and skip the setup here. This matches the logic in
- // AcpiTimerLibConstructor ().
+ // Determine platform type and save Host Bridge DID to PCD
//
- if ((PciRead8 (PCI_LIB_ADDRESS (0, 1, 3, 0x80)) & 0x01) == 0) {
+ switch (mHostBridgeDevId) {
+ case INTEL_82441_DEVICE_ID:
+ PmCmd = POWER_MGMT_REGISTER_PIIX4 (PCI_COMMAND_OFFSET);
+ Pmba = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMBA);
+ PmbaAndVal = ~(UINT32)PIIX4_PMBA_MASK;
+ PmbaOrVal = PIIX4_PMBA_VALUE;
+ AcpiCtlReg = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMREGMISC);
+ AcpiEnBit = PIIX4_PMREGMISC_PMIOSE;
+ break;
+ case INTEL_Q35_MCH_DEVICE_ID:
+ PmCmd = POWER_MGMT_REGISTER_Q35 (PCI_COMMAND_OFFSET);
+ Pmba = POWER_MGMT_REGISTER_Q35 (ICH9_PMBASE);
+ PmbaAndVal = ~(UINT32)ICH9_PMBASE_MASK;
+ PmbaOrVal = ICH9_PMBASE_VALUE;
+ AcpiCtlReg = POWER_MGMT_REGISTER_Q35 (ICH9_ACPI_CNTL);
+ AcpiEnBit = ICH9_ACPI_CNTL_ACPI_EN;
+ break;
+ default:
+ DEBUG ((EFI_D_ERROR, "%a: Unknown Host Bridge Device ID: 0x%04x\n",
+ __FUNCTION__, mHostBridgeDevId));
+ ASSERT (FALSE);
+ return;
+ }
+ PcdStatus = PcdSet16S (PcdOvmfHostBridgePciDevId, mHostBridgeDevId);
+ ASSERT_RETURN_ERROR (PcdStatus);
+
+ //
+ // If the appropriate IOspace enable bit is set, assume the ACPI PMBA
+ // has been configured (e.g., by Xen) and skip the setup here.
+ // This matches the logic in AcpiTimerLibConstructor ().
+ //
+ if ((PciRead8 (AcpiCtlReg) & AcpiEnBit) == 0) {
//
- // The PEI phase should be exited with fully accessibe PIIX4 IO space:
+ // The PEI phase should be exited with fully accessibe ACPI PM IO space:
// 1. set PMBA
//
- PciAndThenOr32 (
- PCI_LIB_ADDRESS (0, 1, 3, 0x40),
- (UINT32) ~0xFFC0,
- PcdGet16 (PcdAcpiPmBaseAddress)
- );
+ PciAndThenOr32 (Pmba, PmbaAndVal, PmbaOrVal);
//
// 2. set PCICMD/IOSE
//
- PciOr8 (
- PCI_LIB_ADDRESS (0, 1, 3, PCI_COMMAND_OFFSET),
- EFI_PCI_COMMAND_IO_SPACE
+ PciOr8 (PmCmd, EFI_PCI_COMMAND_IO_SPACE);
+
+ //
+ // 3. set ACPI PM IO enable bit (PMREGMISC:PMIOSE or ACPI_CNTL:ACPI_EN)
+ //
+ PciOr8 (AcpiCtlReg, AcpiEnBit);
+ }
+
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {
+ //
+ // Set Root Complex Register Block BAR
+ //
+ PciWrite32 (
+ POWER_MGMT_REGISTER_Q35 (ICH9_RCBA),
+ ICH9_ROOT_COMPLEX_BASE | ICH9_RCBA_EN
);
//
- // 3. set PMREGMISC/PMIOSE
+ // Set PCI Express Register Range Base Address
//
- PciOr8 (PCI_LIB_ADDRESS (0, 1, 3, 0x80), 0x01);
+ PciExBarInitialization ();
}
}
VOID
BootModeInitialization (
+ VOID
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
+
+ if (CmosRead8 (0xF) == 0xFE) {
+ mBootMode = BOOT_ON_S3_RESUME;
+ }
+ CmosWrite8 (0xF, 0x00);
- Status = PeiServicesSetBootMode (BOOT_WITH_FULL_CONFIGURATION);
+ Status = PeiServicesSetBootMode (mBootMode);
ASSERT_EFI_ERROR (Status);
Status = PeiServicesInstallPpi (mPpiBootMode);
@@ -350,6 +497,7 @@ ReserveEmuVariableNvStore (
)
{
EFI_PHYSICAL_ADDRESS VariableStore;
+ RETURN_STATUS PcdStatus;
//
// Allocate storage for NV variables early on so it will be
@@ -359,16 +507,16 @@ ReserveEmuVariableNvStore (
//
VariableStore =
(EFI_PHYSICAL_ADDRESS)(UINTN)
- AllocateAlignedRuntimePages (
- EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)),
- PcdGet32 (PcdFlashNvStorageFtwSpareSize)
+ AllocateRuntimePages (
+ EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize))
);
DEBUG ((EFI_D_INFO,
"Reserved variable store memory: 0x%lX; size: %dkb\n",
VariableStore,
(2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)) / 1024
));
- PcdSet64 (PcdEmuVariableNvStoreReserved, VariableStore);
+ PcdStatus = PcdSet64S (PcdEmuVariableNvStoreReserved, VariableStore);
+ ASSERT_RETURN_ERROR (PcdStatus);
}
@@ -377,7 +525,7 @@ DebugDumpCmos (
VOID
)
{
- UINTN Loop;
+ UINT32 Loop;
DEBUG ((EFI_D_INFO, "CMOS:\n"));
@@ -393,6 +541,68 @@ DebugDumpCmos (
}
+VOID
+S3Verification (
+ VOID
+ )
+{
+#if defined (MDE_CPU_X64)
+ if (FeaturePcdGet (PcdSmmSmramRequire) && mS3Supported) {
+ DEBUG ((EFI_D_ERROR,
+ "%a: S3Resume2Pei doesn't support X64 PEI + SMM yet.\n", __FUNCTION__));
+ DEBUG ((EFI_D_ERROR,
+ "%a: Please disable S3 on the QEMU command line (see the README),\n",
+ __FUNCTION__));
+ DEBUG ((EFI_D_ERROR,
+ "%a: or build OVMF with \"OvmfPkgIa32X64.dsc\".\n", __FUNCTION__));
+ ASSERT (FALSE);
+ CpuDeadLoop ();
+ }
+#endif
+}
+
+
+/**
+ Fetch the number of boot CPUs from QEMU and expose it to UefiCpuPkg modules.
+ Set the mMaxCpuCount variable.
+**/
+VOID
+MaxCpuCountInitialization (
+ VOID
+ )
+{
+ UINT16 ProcessorCount;
+ RETURN_STATUS PcdStatus;
+
+ QemuFwCfgSelectItem (QemuFwCfgItemSmpCpuCount);
+ ProcessorCount = QemuFwCfgRead16 ();
+ //
+ // If the fw_cfg key or fw_cfg entirely is unavailable, load mMaxCpuCount
+ // from the PCD default. No change to PCDs.
+ //
+ if (ProcessorCount == 0) {
+ mMaxCpuCount = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);
+ return;
+ }
+ //
+ // Otherwise, set mMaxCpuCount to the value reported by QEMU.
+ //
+ mMaxCpuCount = ProcessorCount;
+ //
+ // Additionally, tell UefiCpuPkg modules (a) the exact number of VCPUs, (b)
+ // to wait, in the initial AP bringup, exactly as long as it takes for all of
+ // the APs to report in. For this, we set the longest representable timeout
+ // (approx. 71 minutes).
+ //
+ PcdStatus = PcdSet32S (PcdCpuMaxLogicalProcessorNumber, ProcessorCount);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ PcdStatus = PcdSet32S (PcdCpuApInitTimeOutInMicroSeconds, MAX_UINT32);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ DEBUG ((DEBUG_INFO, "%a: QEMU reports %d processor(s)\n", __FUNCTION__,
+ ProcessorCount));
+}
+
+
/**
Perform Platform PEI initialization.
@@ -409,42 +619,57 @@ InitializePlatform (
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
- EFI_PHYSICAL_ADDRESS TopOfMemory;
- UINT32 XenLeaf;
-
- TopOfMemory = 0;
+ EFI_STATUS Status;
- DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));
+ DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n"));
DebugDumpCmos ();
- XenLeaf = XenDetect ();
+ XenDetect ();
- if (XenLeaf != 0) {
- PublishPeiMemory ();
- PcdSetBool (PcdPciDisableBusEnumeration, TRUE);
- } else {
- TopOfMemory = MemDetect ();
+ if (QemuFwCfgS3Enabled ()) {
+ DEBUG ((EFI_D_INFO, "S3 support was detected on QEMU\n"));
+ mS3Supported = TRUE;
+ Status = PcdSetBoolS (PcdAcpiS3Enable, TRUE);
+ ASSERT_EFI_ERROR (Status);
}
- if (XenLeaf != 0) {
- DEBUG ((EFI_D_INFO, "Xen was detected\n"));
- InitializeXen (XenLeaf);
+ S3Verification ();
+ BootModeInitialization ();
+ AddressWidthInitialization ();
+ MaxCpuCountInitialization ();
+
+ //
+ // Query Host Bridge DID
+ //
+ mHostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID);
+
+ if (FeaturePcdGet (PcdSmmSmramRequire)) {
+ Q35TsegMbytesInitialization ();
}
- ReserveEmuVariableNvStore ();
+ PublishPeiMemory ();
- PeiFvInitialization ();
+ InitializeRamRegions ();
- if (XenLeaf != 0) {
- XenMemMapInitialization ();
- } else {
- MemMapInitialization (TopOfMemory);
+ if (mXen) {
+ DEBUG ((EFI_D_INFO, "Xen was detected\n"));
+ InitializeXen ();
}
- MiscInitialization ();
+ if (mBootMode != BOOT_ON_S3_RESUME) {
+ if (!FeaturePcdGet (PcdSmmSmramRequire)) {
+ ReserveEmuVariableNvStore ();
+ }
+ PeiFvInitialization ();
+ MemMapInitialization ();
+ NoexecDxeInitialization ();
+ }
- BootModeInitialization ();
+ InstallClearCacheCallback ();
+ AmdSevInitialize ();
+ MiscInitialization ();
+ InstallFeatureControlCallback ();
return EFI_SUCCESS;
}