X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OvmfPkg%2FPlatformPei%2FPlatform.c;h=0876316eefbc7643aade7f8b1028a3ddd7e87fb9;hp=2219ebb7eedd2c4c48862f30b0bfc02fe55570a3;hb=d4534984111328ff839fbf51be2779a98bfefa30;hpb=49ba9447c92d6fca214476381107a180d08e59d1 diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c index 2219ebb7ee..0876316eef 100644 --- a/OvmfPkg/PlatformPei/Platform.c +++ b/OvmfPkg/PlatformPei/Platform.c @@ -1,14 +1,10 @@ /**@file Platform PEI driver - Copyright (c) 2006 - 2009, Intel Corporation - All rights reserved. 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 + Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.
+ Copyright (c) 2011, Andrei Warkentin - 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 **/ @@ -20,50 +16,96 @@ // // The Library classes this module consumes // +#include #include #include #include +#include +#include #include #include +#include +#include +#include #include #include +#include +#include +#include #include "Platform.h" +#include "Cmos.h" EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = { { EfiACPIMemoryNVS, 0x004 }, - { EfiACPIReclaimMemory, 0x01C }, - { EfiRuntimeServicesData, 0x050 }, - { EfiRuntimeServicesCode, 0x020 }, - { EfiBootServicesCode, 0x0F0 }, - { EfiBootServicesData, 0xA00 }, + { EfiACPIReclaimMemory, 0x008 }, + { EfiReservedMemoryType, 0x004 }, + { EfiRuntimeServicesData, 0x024 }, + { EfiRuntimeServicesCode, 0x030 }, + { EfiBootServicesCode, 0x180 }, + { EfiBootServicesData, 0xF00 }, { EfiMaxMemoryType, 0x000 } }; +EFI_PEI_PPI_DESCRIPTOR mPpiBootMode[] = { + { + EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST, + &gEfiPeiMasterBootModePpiGuid, + NULL + } +}; + + +UINT16 mHostBridgeDevId; + +EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION; + +BOOLEAN mS3Supported = FALSE; + +UINT32 mMaxCpuCount; + VOID AddIoMemoryBaseSizeHob ( EFI_PHYSICAL_ADDRESS MemoryBase, UINT64 MemorySize ) { - STATIC EFI_RESOURCE_ATTRIBUTE_TYPE Attributes = - ( + BuildResourceDescriptorHob ( + EFI_RESOURCE_MEMORY_MAPPED_IO, EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE | - EFI_RESOURCE_ATTRIBUTE_TESTED + EFI_RESOURCE_ATTRIBUTE_TESTED, + MemoryBase, + MemorySize ); +} +VOID +AddReservedMemoryBaseSizeHob ( + EFI_PHYSICAL_ADDRESS MemoryBase, + UINT64 MemorySize, + BOOLEAN Cacheable + ) +{ BuildResourceDescriptorHob ( - EFI_RESOURCE_MEMORY_MAPPED_IO, - Attributes, + EFI_RESOURCE_MEMORY_RESERVED, + 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 ); } - VOID AddIoMemoryRangeHob ( EFI_PHYSICAL_ADDRESS MemoryBase, @@ -80,20 +122,15 @@ AddMemoryBaseSizeHob ( UINT64 MemorySize ) { - STATIC EFI_RESOURCE_ATTRIBUTE_TYPE Attributes = - ( + 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 | - EFI_RESOURCE_ATTRIBUTE_TESTED - ); - - BuildResourceDescriptorHob ( - EFI_RESOURCE_SYSTEM_MEMORY, - Attributes, + EFI_RESOURCE_ATTRIBUTE_TESTED, MemoryBase, MemorySize ); @@ -112,8 +149,16 @@ AddMemoryRangeHob ( VOID MemMapInitialization ( + VOID ) { + UINT64 PciIoBase; + UINT64 PciIoSize; + RETURN_STATUS PcdStatus; + + PciIoBase = 0xC000; + PciIoSize = 0x4000; + // // Create Memory Type Information HOB // @@ -124,36 +169,437 @@ MemMapInitialization ( ); // - // Local APIC range + // Video memory + Legacy BIOS region // - AddIoMemoryBaseSizeHob (0xFEC80000, 0x80000); + AddIoMemoryRangeHob (0x0A0000, BASE_1MB); + + if (!mXen) { + UINT32 TopOfLowRam; + UINT64 PciExBarBase; + UINT32 PciBase; + UINT32 PciSize; + + 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. + // + // 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.) + // + // 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); + + // + // 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); + } + } // - // I/O APIC range + // Add PCI IO Port space available for PCI resource allocations. // - AddIoMemoryBaseSizeHob (0xFEC00000, 0x80000); + 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 +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; // - // Video memory + Legacy BIOS region + // We only support the 256MB size for the MMCONFIG area: + // 256 buses * 32 devices * 8 functions * 4096 bytes config space. // - AddMemoryRangeHob (0x0A0000, 0x0B0000); - AddIoMemoryRangeHob (0x0B0000, 0x100000); -} + // 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. + // + // 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. + // + PciExBarBase.Uint64 = FixedPcdGet64 (PcdPciExpressBaseAddress); + ASSERT ((PciExBarBase.Uint32[1] & MCH_PCIEXBAR_HIGHMASK) == 0); + ASSERT ((PciExBarBase.Uint32[0] & MCH_PCIEXBAR_LOWMASK) == 0); + // + // Clear the PCIEXBAREN bit first, before programming the high register. + // + PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW), 0); + + // + // 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 // - IoWrite8 (0x92, (UINT8) (IoRead8 (0x92) | 0x02)); + IoOr8 (0x92, BIT1); + + // + // 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 (mPhysMemAddressWidth, 16); + + // + // Determine platform type and save Host Bridge DID to PCD + // + 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); // - // Build the CPU hob with 36-bit addressing and 16-bits of IO space. + // 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 (). // - BuildCpuHob (36, 16); + if ((PciRead8 (AcpiCtlReg) & AcpiEnBit) == 0) { + // + // The PEI phase should be exited with fully accessibe ACPI PM IO space: + // 1. set PMBA + // + PciAndThenOr32 (Pmba, PmbaAndVal, PmbaOrVal); + + // + // 2. set PCICMD/IOSE + // + 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 + ); + + // + // Set PCI Express Register Range Base Address + // + PciExBarInitialization (); + } +} + + +VOID +BootModeInitialization ( + VOID + ) +{ + EFI_STATUS Status; + + if (CmosRead8 (0xF) == 0xFE) { + mBootMode = BOOT_ON_S3_RESUME; + } + CmosWrite8 (0xF, 0x00); + + Status = PeiServicesSetBootMode (mBootMode); + ASSERT_EFI_ERROR (Status); + + Status = PeiServicesInstallPpi (mPpiBootMode); + ASSERT_EFI_ERROR (Status); +} + + +VOID +ReserveEmuVariableNvStore ( + ) +{ + EFI_PHYSICAL_ADDRESS VariableStore; + RETURN_STATUS PcdStatus; + + // + // Allocate storage for NV variables early on so it will be + // at a consistent address. Since VM memory is preserved + // across reboots, this allows the NV variable storage to survive + // a VM reboot. + // + VariableStore = + (EFI_PHYSICAL_ADDRESS)(UINTN) + 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 + )); + PcdStatus = PcdSet64S (PcdEmuVariableNvStoreReserved, VariableStore); + ASSERT_RETURN_ERROR (PcdStatus); +} + + +VOID +DebugDumpCmos ( + VOID + ) +{ + UINT32 Loop; + + DEBUG ((EFI_D_INFO, "CMOS:\n")); + + for (Loop = 0; Loop < 0x80; Loop++) { + if ((Loop % 0x10) == 0) { + DEBUG ((EFI_D_INFO, "%02x:", Loop)); + } + DEBUG ((EFI_D_INFO, " %02x", CmosRead8 (Loop))); + if ((Loop % 0x10) == 0xf) { + DEBUG ((EFI_D_INFO, "\n")); + } + } +} + + +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)); } @@ -173,16 +619,57 @@ InitializePlatform ( IN CONST EFI_PEI_SERVICES **PeiServices ) { - DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n")); + EFI_STATUS Status; - MemDetect (); + DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n")); - PeiFvInitialization (); + DebugDumpCmos (); - MemMapInitialization (); + XenDetect (); + if (QemuFwCfgS3Enabled ()) { + DEBUG ((EFI_D_INFO, "S3 support was detected on QEMU\n")); + mS3Supported = TRUE; + Status = PcdSetBoolS (PcdAcpiS3Enable, TRUE); + ASSERT_EFI_ERROR (Status); + } + + S3Verification (); + BootModeInitialization (); + AddressWidthInitialization (); + MaxCpuCountInitialization (); + + // + // Query Host Bridge DID + // + mHostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID); + + if (FeaturePcdGet (PcdSmmSmramRequire)) { + Q35TsegMbytesInitialization (); + } + + PublishPeiMemory (); + + InitializeRamRegions (); + + if (mXen) { + DEBUG ((EFI_D_INFO, "Xen was detected\n")); + InitializeXen (); + } + + if (mBootMode != BOOT_ON_S3_RESUME) { + if (!FeaturePcdGet (PcdSmmSmramRequire)) { + ReserveEmuVariableNvStore (); + } + PeiFvInitialization (); + MemMapInitialization (); + NoexecDxeInitialization (); + } + + InstallClearCacheCallback (); + AmdSevInitialize (); MiscInitialization (); + InstallFeatureControlCallback (); return EFI_SUCCESS; } -