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- /** @file
- Creates HOB during Standalone MM Foundation entry point
- on ARM platforms.
- Copyright (c) 2017 - 2021, Arm Ltd. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <PiMm.h>
- #include <PiPei.h>
- #include <Guid/MmramMemoryReserve.h>
- #include <Guid/MpInformation.h>
- #include <Library/Arm/StandaloneMmCoreEntryPoint.h>
- #include <Library/ArmMmuLib.h>
- #include <Library/ArmSvcLib.h>
- #include <Library/DebugLib.h>
- #include <Library/HobLib.h>
- #include <Library/BaseLib.h>
- #include <Library/BaseMemoryLib.h>
- #include <Library/SerialPortLib.h>
- #include <IndustryStandard/ArmStdSmc.h>
- extern EFI_HOB_HANDOFF_INFO_TABLE*
- HobConstructor (
- IN VOID *EfiMemoryBegin,
- IN UINTN EfiMemoryLength,
- IN VOID *EfiFreeMemoryBottom,
- IN VOID *EfiFreeMemoryTop
- );
- // GUID to identify HOB with whereabouts of communication buffer with Normal
- // World
- extern EFI_GUID gEfiStandaloneMmNonSecureBufferGuid;
- // GUID to identify HOB where the entry point of the CPU driver will be
- // populated to allow this entry point driver to invoke it upon receipt of an
- // event
- extern EFI_GUID gEfiArmTfCpuDriverEpDescriptorGuid;
- /**
- Use the boot information passed by privileged firmware to populate a HOB list
- suitable for consumption by the MM Core and drivers.
- @param [in, out] CpuDriverEntryPoint Address of MM CPU driver entrypoint
- @param [in] PayloadBootInfo Boot information passed by privileged
- firmware
- **/
- VOID *
- CreateHobListFromBootInfo (
- IN OUT PI_MM_ARM_TF_CPU_DRIVER_ENTRYPOINT *CpuDriverEntryPoint,
- IN EFI_SECURE_PARTITION_BOOT_INFO *PayloadBootInfo
- )
- {
- EFI_HOB_HANDOFF_INFO_TABLE *HobStart;
- EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
- UINT32 Index;
- UINT32 BufferSize;
- UINT32 Flags;
- EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHob;
- EFI_MMRAM_DESCRIPTOR *MmramRanges;
- EFI_MMRAM_DESCRIPTOR *NsCommBufMmramRange;
- MP_INFORMATION_HOB_DATA *MpInformationHobData;
- EFI_PROCESSOR_INFORMATION *ProcInfoBuffer;
- EFI_SECURE_PARTITION_CPU_INFO *CpuInfo;
- ARM_TF_CPU_DRIVER_EP_DESCRIPTOR *CpuDriverEntryPointDesc;
- // Create a hoblist with a PHIT and EOH
- HobStart = HobConstructor (
- (VOID *) (UINTN) PayloadBootInfo->SpMemBase,
- (UINTN) PayloadBootInfo->SpMemLimit - PayloadBootInfo->SpMemBase,
- (VOID *) (UINTN) PayloadBootInfo->SpHeapBase,
- (VOID *) (UINTN) (PayloadBootInfo->SpHeapBase + PayloadBootInfo->SpHeapSize)
- );
- // Check that the Hoblist starts at the bottom of the Heap
- ASSERT (HobStart == (VOID *) (UINTN) PayloadBootInfo->SpHeapBase);
- // Build a Boot Firmware Volume HOB
- BuildFvHob (PayloadBootInfo->SpImageBase, PayloadBootInfo->SpImageSize);
- // Build a resource descriptor Hob that describes the available physical
- // memory range
- Attributes = (
- EFI_RESOURCE_ATTRIBUTE_PRESENT |
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
- EFI_RESOURCE_ATTRIBUTE_TESTED |
- EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
- );
- BuildResourceDescriptorHob (
- EFI_RESOURCE_SYSTEM_MEMORY,
- Attributes,
- (UINTN) PayloadBootInfo->SpMemBase,
- PayloadBootInfo->SpMemLimit - PayloadBootInfo->SpMemBase
- );
- // Find the size of the GUIDed HOB with MP information
- BufferSize = sizeof (MP_INFORMATION_HOB_DATA);
- BufferSize += sizeof (EFI_PROCESSOR_INFORMATION) * PayloadBootInfo->NumCpus;
- // Create a Guided MP information HOB to enable the ARM TF CPU driver to
- // perform per-cpu allocations.
- MpInformationHobData = BuildGuidHob (&gMpInformationHobGuid, BufferSize);
- // Populate the MP information HOB with the topology information passed by
- // privileged firmware
- MpInformationHobData->NumberOfProcessors = PayloadBootInfo->NumCpus;
- MpInformationHobData->NumberOfEnabledProcessors = PayloadBootInfo->NumCpus;
- ProcInfoBuffer = MpInformationHobData->ProcessorInfoBuffer;
- CpuInfo = PayloadBootInfo->CpuInfo;
- for (Index = 0; Index < PayloadBootInfo->NumCpus; Index++) {
- ProcInfoBuffer[Index].ProcessorId = CpuInfo[Index].Mpidr;
- ProcInfoBuffer[Index].Location.Package = GET_CLUSTER_ID(CpuInfo[Index].Mpidr);
- ProcInfoBuffer[Index].Location.Core = GET_CORE_ID(CpuInfo[Index].Mpidr);
- ProcInfoBuffer[Index].Location.Thread = GET_CORE_ID(CpuInfo[Index].Mpidr);
- Flags = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;
- if (CpuInfo[Index].Flags & CPU_INFO_FLAG_PRIMARY_CPU) {
- Flags |= PROCESSOR_AS_BSP_BIT;
- }
- ProcInfoBuffer[Index].StatusFlag = Flags;
- }
- // Create a Guided HOB to tell the ARM TF CPU driver the location and length
- // of the communication buffer shared with the Normal world.
- NsCommBufMmramRange = (EFI_MMRAM_DESCRIPTOR *) BuildGuidHob (
- &gEfiStandaloneMmNonSecureBufferGuid,
- sizeof (EFI_MMRAM_DESCRIPTOR)
- );
- NsCommBufMmramRange->PhysicalStart = PayloadBootInfo->SpNsCommBufBase;
- NsCommBufMmramRange->CpuStart = PayloadBootInfo->SpNsCommBufBase;
- NsCommBufMmramRange->PhysicalSize = PayloadBootInfo->SpNsCommBufSize;
- NsCommBufMmramRange->RegionState = EFI_CACHEABLE | EFI_ALLOCATED;
- // Create a Guided HOB to enable the ARM TF CPU driver to share its entry
- // point and populate it with the address of the shared buffer
- CpuDriverEntryPointDesc = (ARM_TF_CPU_DRIVER_EP_DESCRIPTOR *) BuildGuidHob (
- &gEfiArmTfCpuDriverEpDescriptorGuid,
- sizeof (ARM_TF_CPU_DRIVER_EP_DESCRIPTOR)
- );
- *CpuDriverEntryPoint = NULL;
- CpuDriverEntryPointDesc->ArmTfCpuDriverEpPtr = CpuDriverEntryPoint;
- // Find the size of the GUIDed HOB with SRAM ranges
- BufferSize = sizeof (EFI_MMRAM_HOB_DESCRIPTOR_BLOCK);
- BufferSize += PayloadBootInfo->NumSpMemRegions * sizeof (EFI_MMRAM_DESCRIPTOR);
- // Create a GUIDed HOB with SRAM ranges
- MmramRangesHob = BuildGuidHob (&gEfiMmPeiMmramMemoryReserveGuid, BufferSize);
- // Fill up the number of MMRAM memory regions
- MmramRangesHob->NumberOfMmReservedRegions = PayloadBootInfo->NumSpMemRegions;
- // Fill up the MMRAM ranges
- MmramRanges = &MmramRangesHob->Descriptor[0];
- // Base and size of memory occupied by the Standalone MM image
- MmramRanges[0].PhysicalStart = PayloadBootInfo->SpImageBase;
- MmramRanges[0].CpuStart = PayloadBootInfo->SpImageBase;
- MmramRanges[0].PhysicalSize = PayloadBootInfo->SpImageSize;
- MmramRanges[0].RegionState = EFI_CACHEABLE | EFI_ALLOCATED;
- // Base and size of buffer shared with privileged Secure world software
- MmramRanges[1].PhysicalStart = PayloadBootInfo->SpSharedBufBase;
- MmramRanges[1].CpuStart = PayloadBootInfo->SpSharedBufBase;
- MmramRanges[1].PhysicalSize = PayloadBootInfo->SpPcpuSharedBufSize * PayloadBootInfo->NumCpus;
- MmramRanges[1].RegionState = EFI_CACHEABLE | EFI_ALLOCATED;
- // Base and size of buffer used for synchronous communication with Normal
- // world software
- MmramRanges[2].PhysicalStart = PayloadBootInfo->SpNsCommBufBase;
- MmramRanges[2].CpuStart = PayloadBootInfo->SpNsCommBufBase;
- MmramRanges[2].PhysicalSize = PayloadBootInfo->SpNsCommBufSize;
- MmramRanges[2].RegionState = EFI_CACHEABLE | EFI_ALLOCATED;
- // Base and size of memory allocated for stacks for all cpus
- MmramRanges[3].PhysicalStart = PayloadBootInfo->SpStackBase;
- MmramRanges[3].CpuStart = PayloadBootInfo->SpStackBase;
- MmramRanges[3].PhysicalSize = PayloadBootInfo->SpPcpuStackSize * PayloadBootInfo->NumCpus;
- MmramRanges[3].RegionState = EFI_CACHEABLE | EFI_ALLOCATED;
- // Base and size of heap memory shared by all cpus
- MmramRanges[4].PhysicalStart = (EFI_PHYSICAL_ADDRESS) (UINTN) HobStart;
- MmramRanges[4].CpuStart = (EFI_PHYSICAL_ADDRESS) (UINTN) HobStart;
- MmramRanges[4].PhysicalSize = HobStart->EfiFreeMemoryBottom - (EFI_PHYSICAL_ADDRESS) (UINTN) HobStart;
- MmramRanges[4].RegionState = EFI_CACHEABLE | EFI_ALLOCATED;
- // Base and size of heap memory shared by all cpus
- MmramRanges[5].PhysicalStart = HobStart->EfiFreeMemoryBottom;
- MmramRanges[5].CpuStart = HobStart->EfiFreeMemoryBottom;
- MmramRanges[5].PhysicalSize = HobStart->EfiFreeMemoryTop - HobStart->EfiFreeMemoryBottom;
- MmramRanges[5].RegionState = EFI_CACHEABLE;
- return HobStart;
- }
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