/**@file\r
Platform PEI driver\r
\r
- Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>\r
\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
//\r
// The Library classes this module consumes\r
//\r
+#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/HobLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/PciLib.h>\r
#include <Library/PeimEntryPoint.h>\r
#include <Library/PeiServicesLib.h>\r
+#include <Library/QemuFwCfgLib.h>\r
+#include <Library/QemuFwCfgS3Lib.h>\r
#include <Library/ResourcePublicationLib.h>\r
#include <Guid/MemoryTypeInformation.h>\r
#include <Ppi/MasterBootMode.h>\r
+#include <IndustryStandard/I440FxPiix4.h>\r
#include <IndustryStandard/Pci22.h>\r
+#include <IndustryStandard/Q35MchIch9.h>\r
+#include <IndustryStandard/QemuCpuHotplug.h>\r
+#include <OvmfPlatforms.h>\r
\r
#include "Platform.h"\r
#include "Cmos.h"\r
};\r
\r
\r
+UINT16 mHostBridgeDevId;\r
+\r
+EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;\r
+\r
+BOOLEAN mS3Supported = FALSE;\r
+\r
+UINT32 mMaxCpuCount;\r
+\r
VOID\r
AddIoMemoryBaseSizeHob (\r
EFI_PHYSICAL_ADDRESS MemoryBase,\r
VOID\r
AddReservedMemoryBaseSizeHob (\r
EFI_PHYSICAL_ADDRESS MemoryBase,\r
- UINT64 MemorySize\r
+ UINT64 MemorySize,\r
+ BOOLEAN Cacheable\r
)\r
{\r
BuildResourceDescriptorHob (\r
EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r
+ (Cacheable ?\r
+ EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
+ EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
+ EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE :\r
+ 0\r
+ ) |\r
EFI_RESOURCE_ATTRIBUTE_TESTED,\r
MemoryBase,\r
MemorySize\r
}\r
\r
\r
-VOID\r
-AddUntestedMemoryBaseSizeHob (\r
- EFI_PHYSICAL_ADDRESS MemoryBase,\r
- UINT64 MemorySize\r
- )\r
-{\r
- BuildResourceDescriptorHob (\r
- EFI_RESOURCE_SYSTEM_MEMORY,\r
- EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
- EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE,\r
- MemoryBase,\r
- MemorySize\r
- );\r
-}\r
-\r
-\r
-VOID\r
-AddUntestedMemoryRangeHob (\r
- EFI_PHYSICAL_ADDRESS MemoryBase,\r
- EFI_PHYSICAL_ADDRESS MemoryLimit\r
- )\r
-{\r
- AddUntestedMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));\r
-}\r
-\r
VOID\r
MemMapInitialization (\r
VOID\r
)\r
{\r
+ UINT64 PciIoBase;\r
+ UINT64 PciIoSize;\r
+ RETURN_STATUS PcdStatus;\r
+\r
+ PciIoBase = 0xC000;\r
+ PciIoSize = 0x4000;\r
+\r
//\r
// Create Memory Type Information HOB\r
//\r
sizeof(mDefaultMemoryTypeInformation)\r
);\r
\r
- //\r
- // Add PCI IO Port space available for PCI resource allocations.\r
- //\r
- BuildResourceDescriptorHob (\r
- EFI_RESOURCE_IO,\r
- EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED,\r
- 0xC000,\r
- 0x4000\r
- );\r
-\r
//\r
// Video memory + Legacy BIOS region\r
//\r
\r
if (!mXen) {\r
UINT32 TopOfLowRam;\r
+ UINT64 PciExBarBase;\r
+ UINT32 PciBase;\r
+ UINT32 PciSize;\r
+\r
TopOfLowRam = GetSystemMemorySizeBelow4gb ();\r
+ PciExBarBase = 0;\r
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r
+ //\r
+ // The MMCONFIG area is expected to fall between the top of low RAM and\r
+ // the base of the 32-bit PCI host aperture.\r
+ //\r
+ PciExBarBase = FixedPcdGet64 (PcdPciExpressBaseAddress);\r
+ ASSERT (TopOfLowRam <= PciExBarBase);\r
+ ASSERT (PciExBarBase <= MAX_UINT32 - SIZE_256MB);\r
+ PciBase = (UINT32)(PciExBarBase + SIZE_256MB);\r
+ } else {\r
+ ASSERT (TopOfLowRam <= mQemuUc32Base);\r
+ PciBase = mQemuUc32Base;\r
+ }\r
\r
//\r
// address purpose size\r
// 0xFEC00000 IO-APIC 4 KB\r
// 0xFEC01000 gap 1020 KB\r
// 0xFED00000 HPET 1 KB\r
- // 0xFED00400 gap 1023 KB\r
+ // 0xFED00400 gap 111 KB\r
+ // 0xFED1C000 gap (PIIX4) / RCRB (ICH9) 16 KB\r
+ // 0xFED20000 gap 896 KB\r
// 0xFEE00000 LAPIC 1 MB\r
//\r
- AddIoMemoryRangeHob (TopOfLowRam < BASE_2GB ?\r
- BASE_2GB : TopOfLowRam, 0xFC000000);\r
+ PciSize = 0xFC000000 - PciBase;\r
+ AddIoMemoryBaseSizeHob (PciBase, PciSize);\r
+ PcdStatus = PcdSet64S (PcdPciMmio32Base, PciBase);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
+ PcdStatus = PcdSet64S (PcdPciMmio32Size, PciSize);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
+\r
AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);\r
AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);\r
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r
+ AddIoMemoryBaseSizeHob (ICH9_ROOT_COMPLEX_BASE, SIZE_16KB);\r
+ //\r
+ // Note: there should be an\r
+ //\r
+ // AddIoMemoryBaseSizeHob (PciExBarBase, SIZE_256MB);\r
+ //\r
+ // call below, just like the one above for RCBA. However, Linux insists\r
+ // that the MMCONFIG area be marked in the E820 or UEFI memory map as\r
+ // "reserved memory" -- Linux does not content itself with a simple gap\r
+ // in the memory map wherever the MCFG ACPI table points to.\r
+ //\r
+ // This appears to be a safety measure. The PCI Firmware Specification\r
+ // (rev 3.1) says in 4.1.2. "MCFG Table Description": "The resources can\r
+ // *optionally* be returned in [...] EFIGetMemoryMap as reserved memory\r
+ // [...]". (Emphasis added here.)\r
+ //\r
+ // Normally we add memory resource descriptor HOBs in\r
+ // QemuInitializeRam(), and pre-allocate from those with memory\r
+ // allocation HOBs in InitializeRamRegions(). However, the MMCONFIG area\r
+ // is most definitely not RAM; so, as an exception, cover it with\r
+ // uncacheable reserved memory right here.\r
+ //\r
+ AddReservedMemoryBaseSizeHob (PciExBarBase, SIZE_256MB, FALSE);\r
+ BuildMemoryAllocationHob (PciExBarBase, SIZE_256MB,\r
+ EfiReservedMemoryType);\r
+ }\r
AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);\r
- } else {\r
- XenPublishRamRegions ();\r
+\r
+ //\r
+ // On Q35, the IO Port space is available for PCI resource allocations from\r
+ // 0x6000 up.\r
+ //\r
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r
+ PciIoBase = 0x6000;\r
+ PciIoSize = 0xA000;\r
+ ASSERT ((ICH9_PMBASE_VALUE & 0xF000) < PciIoBase);\r
+ }\r
}\r
+\r
+ //\r
+ // Add PCI IO Port space available for PCI resource allocations.\r
+ //\r
+ BuildResourceDescriptorHob (\r
+ EFI_RESOURCE_IO,\r
+ EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
+ EFI_RESOURCE_ATTRIBUTE_INITIALIZED,\r
+ PciIoBase,\r
+ PciIoSize\r
+ );\r
+ PcdStatus = PcdSet64S (PcdPciIoBase, PciIoBase);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
+ PcdStatus = PcdSet64S (PcdPciIoSize, PciIoSize);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
}\r
\r
+EFI_STATUS\r
+GetNamedFwCfgBoolean (\r
+ IN CHAR8 *FwCfgFileName,\r
+ OUT BOOLEAN *Setting\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ FIRMWARE_CONFIG_ITEM FwCfgItem;\r
+ UINTN FwCfgSize;\r
+ UINT8 Value[3];\r
+\r
+ Status = QemuFwCfgFindFile (FwCfgFileName, &FwCfgItem, &FwCfgSize);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ if (FwCfgSize > sizeof Value) {\r
+ return EFI_BAD_BUFFER_SIZE;\r
+ }\r
+ QemuFwCfgSelectItem (FwCfgItem);\r
+ QemuFwCfgReadBytes (FwCfgSize, Value);\r
+\r
+ if ((FwCfgSize == 1) ||\r
+ (FwCfgSize == 2 && Value[1] == '\n') ||\r
+ (FwCfgSize == 3 && Value[1] == '\r' && Value[2] == '\n')) {\r
+ switch (Value[0]) {\r
+ case '0':\r
+ case 'n':\r
+ case 'N':\r
+ *Setting = FALSE;\r
+ return EFI_SUCCESS;\r
+\r
+ case '1':\r
+ case 'y':\r
+ case 'Y':\r
+ *Setting = TRUE;\r
+ return EFI_SUCCESS;\r
+\r
+ default:\r
+ break;\r
+ }\r
+ }\r
+ return EFI_PROTOCOL_ERROR;\r
+}\r
+\r
+#define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName) \\r
+ do { \\r
+ BOOLEAN Setting; \\r
+ RETURN_STATUS PcdStatus; \\r
+ \\r
+ if (!EFI_ERROR (GetNamedFwCfgBoolean ( \\r
+ "opt/ovmf/" #TokenName, &Setting))) { \\r
+ PcdStatus = PcdSetBoolS (TokenName, Setting); \\r
+ ASSERT_RETURN_ERROR (PcdStatus); \\r
+ } \\r
+ } while (0)\r
+\r
+VOID\r
+NoexecDxeInitialization (\r
+ VOID\r
+ )\r
+{\r
+ UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdPropertiesTableEnable);\r
+ UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdSetNxForStack);\r
+}\r
+\r
+VOID\r
+PciExBarInitialization (\r
+ VOID\r
+ )\r
+{\r
+ union {\r
+ UINT64 Uint64;\r
+ UINT32 Uint32[2];\r
+ } PciExBarBase;\r
+\r
+ //\r
+ // We only support the 256MB size for the MMCONFIG area:\r
+ // 256 buses * 32 devices * 8 functions * 4096 bytes config space.\r
+ //\r
+ // The masks used below enforce the Q35 requirements that the MMCONFIG area\r
+ // be (a) correctly aligned -- here at 256 MB --, (b) located under 64 GB.\r
+ //\r
+ // Note that (b) also ensures that the minimum address width we have\r
+ // determined in AddressWidthInitialization(), i.e., 36 bits, will suffice\r
+ // for DXE's page tables to cover the MMCONFIG area.\r
+ //\r
+ PciExBarBase.Uint64 = FixedPcdGet64 (PcdPciExpressBaseAddress);\r
+ ASSERT ((PciExBarBase.Uint32[1] & MCH_PCIEXBAR_HIGHMASK) == 0);\r
+ ASSERT ((PciExBarBase.Uint32[0] & MCH_PCIEXBAR_LOWMASK) == 0);\r
+\r
+ //\r
+ // Clear the PCIEXBAREN bit first, before programming the high register.\r
+ //\r
+ PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW), 0);\r
+\r
+ //\r
+ // Program the high register. Then program the low register, setting the\r
+ // MMCONFIG area size and enabling decoding at once.\r
+ //\r
+ PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_HIGH), PciExBarBase.Uint32[1]);\r
+ PciWrite32 (\r
+ DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW),\r
+ PciExBarBase.Uint32[0] | MCH_PCIEXBAR_BUS_FF | MCH_PCIEXBAR_EN\r
+ );\r
+}\r
\r
VOID\r
MiscInitialization (\r
VOID\r
)\r
{\r
+ UINTN PmCmd;\r
+ UINTN Pmba;\r
+ UINT32 PmbaAndVal;\r
+ UINT32 PmbaOrVal;\r
+ UINTN AcpiCtlReg;\r
+ UINT8 AcpiEnBit;\r
+ RETURN_STATUS PcdStatus;\r
+\r
//\r
// Disable A20 Mask\r
//\r
IoOr8 (0x92, BIT1);\r
\r
//\r
- // Build the CPU hob with 36-bit addressing and 16-bits of IO space.\r
+ // Build the CPU HOB with guest RAM size dependent address width and 16-bits\r
+ // of IO space. (Side note: unlike other HOBs, the CPU HOB is needed during\r
+ // S3 resume as well, so we build it unconditionally.)\r
+ //\r
+ BuildCpuHob (mPhysMemAddressWidth, 16);\r
+\r
+ //\r
+ // Determine platform type and save Host Bridge DID to PCD\r
//\r
- BuildCpuHob (36, 16);\r
+ switch (mHostBridgeDevId) {\r
+ case INTEL_82441_DEVICE_ID:\r
+ PmCmd = POWER_MGMT_REGISTER_PIIX4 (PCI_COMMAND_OFFSET);\r
+ Pmba = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMBA);\r
+ PmbaAndVal = ~(UINT32)PIIX4_PMBA_MASK;\r
+ PmbaOrVal = PIIX4_PMBA_VALUE;\r
+ AcpiCtlReg = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMREGMISC);\r
+ AcpiEnBit = PIIX4_PMREGMISC_PMIOSE;\r
+ break;\r
+ case INTEL_Q35_MCH_DEVICE_ID:\r
+ PmCmd = POWER_MGMT_REGISTER_Q35 (PCI_COMMAND_OFFSET);\r
+ Pmba = POWER_MGMT_REGISTER_Q35 (ICH9_PMBASE);\r
+ PmbaAndVal = ~(UINT32)ICH9_PMBASE_MASK;\r
+ PmbaOrVal = ICH9_PMBASE_VALUE;\r
+ AcpiCtlReg = POWER_MGMT_REGISTER_Q35 (ICH9_ACPI_CNTL);\r
+ AcpiEnBit = ICH9_ACPI_CNTL_ACPI_EN;\r
+ break;\r
+ default:\r
+ DEBUG ((EFI_D_ERROR, "%a: Unknown Host Bridge Device ID: 0x%04x\n",\r
+ __FUNCTION__, mHostBridgeDevId));\r
+ ASSERT (FALSE);\r
+ return;\r
+ }\r
+ PcdStatus = PcdSet16S (PcdOvmfHostBridgePciDevId, mHostBridgeDevId);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
\r
//\r
- // If PMREGMISC/PMIOSE is set, assume the ACPI PMBA has been configured (for\r
- // example by Xen) and skip the setup here. This matches the logic in\r
- // AcpiTimerLibConstructor ().\r
+ // If the appropriate IOspace enable bit is set, assume the ACPI PMBA\r
+ // has been configured (e.g., by Xen) and skip the setup here.\r
+ // This matches the logic in AcpiTimerLibConstructor ().\r
//\r
- if ((PciRead8 (PCI_LIB_ADDRESS (0, 1, 3, 0x80)) & 0x01) == 0) {\r
+ if ((PciRead8 (AcpiCtlReg) & AcpiEnBit) == 0) {\r
//\r
- // The PEI phase should be exited with fully accessibe PIIX4 IO space:\r
+ // The PEI phase should be exited with fully accessibe ACPI PM IO space:\r
// 1. set PMBA\r
//\r
- PciAndThenOr32 (\r
- PCI_LIB_ADDRESS (0, 1, 3, 0x40),\r
- (UINT32) ~0xFFC0,\r
- PcdGet16 (PcdAcpiPmBaseAddress)\r
- );\r
+ PciAndThenOr32 (Pmba, PmbaAndVal, PmbaOrVal);\r
\r
//\r
// 2. set PCICMD/IOSE\r
//\r
- PciOr8 (\r
- PCI_LIB_ADDRESS (0, 1, 3, PCI_COMMAND_OFFSET),\r
- EFI_PCI_COMMAND_IO_SPACE\r
+ PciOr8 (PmCmd, EFI_PCI_COMMAND_IO_SPACE);\r
+\r
+ //\r
+ // 3. set ACPI PM IO enable bit (PMREGMISC:PMIOSE or ACPI_CNTL:ACPI_EN)\r
+ //\r
+ PciOr8 (AcpiCtlReg, AcpiEnBit);\r
+ }\r
+\r
+ if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r
+ //\r
+ // Set Root Complex Register Block BAR\r
+ //\r
+ PciWrite32 (\r
+ POWER_MGMT_REGISTER_Q35 (ICH9_RCBA),\r
+ ICH9_ROOT_COMPLEX_BASE | ICH9_RCBA_EN\r
);\r
\r
//\r
- // 3. set PMREGMISC/PMIOSE\r
+ // Set PCI Express Register Range Base Address\r
//\r
- PciOr8 (PCI_LIB_ADDRESS (0, 1, 3, 0x80), 0x01);\r
+ PciExBarInitialization ();\r
}\r
}\r
\r
\r
VOID\r
BootModeInitialization (\r
+ VOID\r
)\r
{\r
- EFI_STATUS Status;\r
+ EFI_STATUS Status;\r
\r
- Status = PeiServicesSetBootMode (BOOT_WITH_FULL_CONFIGURATION);\r
+ if (CmosRead8 (0xF) == 0xFE) {\r
+ mBootMode = BOOT_ON_S3_RESUME;\r
+ }\r
+ CmosWrite8 (0xF, 0x00);\r
+\r
+ Status = PeiServicesSetBootMode (mBootMode);\r
ASSERT_EFI_ERROR (Status);\r
\r
Status = PeiServicesInstallPpi (mPpiBootMode);\r
)\r
{\r
EFI_PHYSICAL_ADDRESS VariableStore;\r
+ RETURN_STATUS PcdStatus;\r
\r
//\r
// Allocate storage for NV variables early on so it will be\r
//\r
VariableStore =\r
(EFI_PHYSICAL_ADDRESS)(UINTN)\r
- AllocateAlignedRuntimePages (\r
- EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)),\r
- PcdGet32 (PcdFlashNvStorageFtwSpareSize)\r
+ AllocateRuntimePages (\r
+ EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize))\r
);\r
DEBUG ((EFI_D_INFO,\r
"Reserved variable store memory: 0x%lX; size: %dkb\n",\r
VariableStore,\r
(2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)) / 1024\r
));\r
- PcdSet64 (PcdEmuVariableNvStoreReserved, VariableStore);\r
+ PcdStatus = PcdSet64S (PcdEmuVariableNvStoreReserved, VariableStore);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
}\r
\r
\r
VOID\r
)\r
{\r
- UINTN Loop;\r
+ UINT32 Loop;\r
\r
DEBUG ((EFI_D_INFO, "CMOS:\n"));\r
\r
}\r
\r
\r
+VOID\r
+S3Verification (\r
+ VOID\r
+ )\r
+{\r
+#if defined (MDE_CPU_X64)\r
+ if (FeaturePcdGet (PcdSmmSmramRequire) && mS3Supported) {\r
+ DEBUG ((EFI_D_ERROR,\r
+ "%a: S3Resume2Pei doesn't support X64 PEI + SMM yet.\n", __FUNCTION__));\r
+ DEBUG ((EFI_D_ERROR,\r
+ "%a: Please disable S3 on the QEMU command line (see the README),\n",\r
+ __FUNCTION__));\r
+ DEBUG ((EFI_D_ERROR,\r
+ "%a: or build OVMF with \"OvmfPkgIa32X64.dsc\".\n", __FUNCTION__));\r
+ ASSERT (FALSE);\r
+ CpuDeadLoop ();\r
+ }\r
+#endif\r
+}\r
+\r
+\r
+/**\r
+ Fetch the boot CPU count and the possible CPU count from QEMU, and expose\r
+ them to UefiCpuPkg modules. Set the mMaxCpuCount variable.\r
+**/\r
+VOID\r
+MaxCpuCountInitialization (\r
+ VOID\r
+ )\r
+{\r
+ UINT16 BootCpuCount;\r
+ RETURN_STATUS PcdStatus;\r
+\r
+ //\r
+ // Try to fetch the boot CPU count.\r
+ //\r
+ QemuFwCfgSelectItem (QemuFwCfgItemSmpCpuCount);\r
+ BootCpuCount = QemuFwCfgRead16 ();\r
+ if (BootCpuCount == 0) {\r
+ //\r
+ // QEMU doesn't report the boot CPU count. (BootCpuCount == 0) will let\r
+ // MpInitLib count APs up to (PcdCpuMaxLogicalProcessorNumber - 1), or\r
+ // until PcdCpuApInitTimeOutInMicroSeconds elapses (whichever is reached\r
+ // first).\r
+ //\r
+ DEBUG ((DEBUG_WARN, "%a: boot CPU count unavailable\n", __FUNCTION__));\r
+ mMaxCpuCount = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r
+ } else {\r
+ //\r
+ // We will expose BootCpuCount to MpInitLib. MpInitLib will count APs up to\r
+ // (BootCpuCount - 1) precisely, regardless of timeout.\r
+ //\r
+ // Now try to fetch the possible CPU count.\r
+ //\r
+ UINTN CpuHpBase;\r
+ UINT32 CmdData2;\r
+\r
+ CpuHpBase = ((mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) ?\r
+ ICH9_CPU_HOTPLUG_BASE : PIIX4_CPU_HOTPLUG_BASE);\r
+\r
+ //\r
+ // If only legacy mode is available in the CPU hotplug register block, or\r
+ // the register block is completely missing, then the writes below are\r
+ // no-ops.\r
+ //\r
+ // 1. Switch the hotplug register block to modern mode.\r
+ //\r
+ IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, 0);\r
+ //\r
+ // 2. Select a valid CPU for deterministic reading of\r
+ // QEMU_CPUHP_R_CMD_DATA2.\r
+ //\r
+ // CPU#0 is always valid; it is the always present and non-removable\r
+ // BSP.\r
+ //\r
+ IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, 0);\r
+ //\r
+ // 3. Send a command after which QEMU_CPUHP_R_CMD_DATA2 is specified to\r
+ // read as zero, and which does not invalidate the selector. (The\r
+ // selector may change, but it must not become invalid.)\r
+ //\r
+ // Send QEMU_CPUHP_CMD_GET_PENDING, as it will prove useful later.\r
+ //\r
+ IoWrite8 (CpuHpBase + QEMU_CPUHP_W_CMD, QEMU_CPUHP_CMD_GET_PENDING);\r
+ //\r
+ // 4. Read QEMU_CPUHP_R_CMD_DATA2.\r
+ //\r
+ // If the register block is entirely missing, then this is an unassigned\r
+ // IO read, returning all-bits-one.\r
+ //\r
+ // If only legacy mode is available, then bit#0 stands for CPU#0 in the\r
+ // "CPU present bitmap". CPU#0 is always present.\r
+ //\r
+ // Otherwise, QEMU_CPUHP_R_CMD_DATA2 is either still reserved (returning\r
+ // all-bits-zero), or it is specified to read as zero after the above\r
+ // steps. Both cases confirm modern mode.\r
+ //\r
+ CmdData2 = IoRead32 (CpuHpBase + QEMU_CPUHP_R_CMD_DATA2);\r
+ DEBUG ((DEBUG_VERBOSE, "%a: CmdData2=0x%x\n", __FUNCTION__, CmdData2));\r
+ if (CmdData2 != 0) {\r
+ //\r
+ // QEMU doesn't support the modern CPU hotplug interface. Assume that the\r
+ // possible CPU count equals the boot CPU count (precluding hotplug).\r
+ //\r
+ DEBUG ((DEBUG_WARN, "%a: modern CPU hotplug interface unavailable\n",\r
+ __FUNCTION__));\r
+ mMaxCpuCount = BootCpuCount;\r
+ } else {\r
+ //\r
+ // Grab the possible CPU count from the modern CPU hotplug interface.\r
+ //\r
+ UINT32 Present, Possible, Selected;\r
+\r
+ Present = 0;\r
+ Possible = 0;\r
+\r
+ //\r
+ // We've sent QEMU_CPUHP_CMD_GET_PENDING last; this ensures\r
+ // QEMU_CPUHP_RW_CMD_DATA can now be read usefully. However,\r
+ // QEMU_CPUHP_CMD_GET_PENDING may have selected a CPU with actual pending\r
+ // hotplug events; therefore, select CPU#0 forcibly.\r
+ //\r
+ IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, Possible);\r
+\r
+ do {\r
+ UINT8 CpuStatus;\r
+\r
+ //\r
+ // Read the status of the currently selected CPU. This will help with a\r
+ // sanity check against "BootCpuCount".\r
+ //\r
+ CpuStatus = IoRead8 (CpuHpBase + QEMU_CPUHP_R_CPU_STAT);\r
+ if ((CpuStatus & QEMU_CPUHP_STAT_ENABLED) != 0) {\r
+ ++Present;\r
+ }\r
+ //\r
+ // Attempt to select the next CPU.\r
+ //\r
+ ++Possible;\r
+ IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, Possible);\r
+ //\r
+ // If the selection is successful, then the following read will return\r
+ // the selector (which we know is positive at this point). Otherwise,\r
+ // the read will return 0.\r
+ //\r
+ Selected = IoRead32 (CpuHpBase + QEMU_CPUHP_RW_CMD_DATA);\r
+ ASSERT (Selected == Possible || Selected == 0);\r
+ } while (Selected > 0);\r
+\r
+ //\r
+ // Sanity check: fw_cfg and the modern CPU hotplug interface should\r
+ // return the same boot CPU count.\r
+ //\r
+ if (BootCpuCount != Present) {\r
+ DEBUG ((DEBUG_WARN, "%a: QEMU v2.7 reset bug: BootCpuCount=%d "\r
+ "Present=%u\n", __FUNCTION__, BootCpuCount, Present));\r
+ //\r
+ // The handling of QemuFwCfgItemSmpCpuCount, across CPU hotplug plus\r
+ // platform reset (including S3), was corrected in QEMU commit\r
+ // e3cadac073a9 ("pc: fix FW_CFG_NB_CPUS to account for -device added\r
+ // CPUs", 2016-11-16), part of release v2.8.0.\r
+ //\r
+ BootCpuCount = (UINT16)Present;\r
+ }\r
+\r
+ mMaxCpuCount = Possible;\r
+ }\r
+ }\r
+\r
+ DEBUG ((DEBUG_INFO, "%a: BootCpuCount=%d mMaxCpuCount=%u\n", __FUNCTION__,\r
+ BootCpuCount, mMaxCpuCount));\r
+ ASSERT (BootCpuCount <= mMaxCpuCount);\r
+\r
+ PcdStatus = PcdSet32S (PcdCpuBootLogicalProcessorNumber, BootCpuCount);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
+ PcdStatus = PcdSet32S (PcdCpuMaxLogicalProcessorNumber, mMaxCpuCount);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
+}\r
+\r
+\r
/**\r
Perform Platform PEI initialization.\r
\r
IN CONST EFI_PEI_SERVICES **PeiServices\r
)\r
{\r
- DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));\r
+ EFI_STATUS Status;\r
+\r
+ DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n"));\r
\r
DebugDumpCmos ();\r
\r
XenDetect ();\r
\r
+ if (QemuFwCfgS3Enabled ()) {\r
+ DEBUG ((EFI_D_INFO, "S3 support was detected on QEMU\n"));\r
+ mS3Supported = TRUE;\r
+ Status = PcdSetBoolS (PcdAcpiS3Enable, TRUE);\r
+ ASSERT_EFI_ERROR (Status);\r
+ }\r
+\r
+ S3Verification ();\r
BootModeInitialization ();\r
+ AddressWidthInitialization ();\r
\r
- PublishPeiMemory ();\r
+ //\r
+ // Query Host Bridge DID\r
+ //\r
+ mHostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID);\r
\r
- if (!mXen) {\r
- MemDetect ();\r
+ MaxCpuCountInitialization ();\r
+\r
+ if (FeaturePcdGet (PcdSmmSmramRequire)) {\r
+ Q35TsegMbytesInitialization ();\r
}\r
\r
+ PublishPeiMemory ();\r
+\r
+ QemuUc32BaseInitialization ();\r
+\r
+ InitializeRamRegions ();\r
+\r
if (mXen) {\r
DEBUG ((EFI_D_INFO, "Xen was detected\n"));\r
InitializeXen ();\r
}\r
\r
- ReserveEmuVariableNvStore ();\r
-\r
- PeiFvInitialization ();\r
-\r
- MemMapInitialization ();\r
+ if (mBootMode != BOOT_ON_S3_RESUME) {\r
+ if (!FeaturePcdGet (PcdSmmSmramRequire)) {\r
+ ReserveEmuVariableNvStore ();\r
+ }\r
+ PeiFvInitialization ();\r
+ MemMapInitialization ();\r
+ NoexecDxeInitialization ();\r
+ }\r
\r
+ InstallClearCacheCallback ();\r
+ AmdSevInitialize ();\r
MiscInitialization ();\r
+ InstallFeatureControlCallback ();\r
\r
return EFI_SUCCESS;\r
}\r
projects / mirror_edk2.git / blobdiff