/** @file
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This driver installs SMBIOS information for QSP
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Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
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Copyright (c) 2011 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "SmbiosPlatformDxe.h"
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/**
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Get the system memory size below 4GB
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@return The size of system memory below 4GB
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**/
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UINT32
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GetSystemMemorySizeBelow4gb(
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VOID
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)
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{
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UINT32 Size;
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//
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// CMOS 0x34/0x35 specifies the system memory above 16 MB.
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// * The size is specified in 64kb chunks
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// * Since this is memory above 16MB, the 16MB must be added
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// into the calculation to get the total memory size.
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//
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Size = (UINT32) ((CmosRead16 (CMOS_SYSTEM_MEM_ABOVE_16MB_LOW_BYTE) << 16)
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+ SIZE_16MB);
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return Size;
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}
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/**
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Get the system memory size above 4GB
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@return The size of system memory above 4GB
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**/
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STATIC
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UINT64
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GetSystemMemorySizeAbove4gb(
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VOID
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)
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{
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UINT32 Size;
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//
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// CMOS 0x5b-0x5d specifies the system memory above 4GB MB.
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// * The size is specified in 64kb chunks
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//
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Size = (CmosRead16 (CMOS_SYSTEM_MEM_ABOVE_4GB_MIDDLE_BYTE) << 8)
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+ CmosRead8 (CMOS_SYSTEM_MEM_ABOVE_4GB_LOW_BYTE);
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return LShiftU64 (Size, 16);
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}
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/**
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Installs SMBIOS information for SIMICS QSP
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@param ImageHandle Module's image handle
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@param SystemTable Pointer of EFI_SYSTEM_TABLE
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@retval EFI_SUCCESS Smbios data successfully installed
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@retval Other Smbios data was not installed
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**/
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EFI_STATUS
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EFIAPI
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SmbiosTablePublishEntry (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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EFI_SMBIOS_PROTOCOL *Smbios;
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SMBIOS_TABLE_TYPE19 *Type19Record;
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EFI_SMBIOS_HANDLE MemArrayMappedAddrSmbiosHandle;
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UINT8 NumSlots;
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UINT64 TotalMemorySize;
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//
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// Find the SMBIOS protocol
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//
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Status = gBS->LocateProtocol (
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&gEfiSmbiosProtocolGuid,
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NULL,
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(VOID**)&Smbios
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Generate Memory Array Mapped Address info
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//
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NumSlots = 2;
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TotalMemorySize = 0;
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TotalMemorySize = GetSystemMemorySizeBelow4gb();
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Type19Record = AllocatePool(sizeof(SMBIOS_TABLE_TYPE19));
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ZeroMem(Type19Record, sizeof(SMBIOS_TABLE_TYPE19));
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Type19Record->Hdr.Type = EFI_SMBIOS_TYPE_MEMORY_ARRAY_MAPPED_ADDRESS;
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Type19Record->Hdr.Length = sizeof(SMBIOS_TABLE_TYPE19);
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Type19Record->Hdr.Handle = 0;
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Type19Record->StartingAddress = 0;
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Type19Record->EndingAddress = (UINT32)RShiftU64(TotalMemorySize, 10) - 1;
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Type19Record->MemoryArrayHandle = SMBIOS_HANDLE_PI_RESERVED;
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Type19Record->PartitionWidth = (UINT8)(NumSlots);
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MemArrayMappedAddrSmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
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Status = Smbios->Add(Smbios, NULL, &MemArrayMappedAddrSmbiosHandle, (EFI_SMBIOS_TABLE_HEADER*)Type19Record);
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ASSERT_EFI_ERROR(Status);
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TotalMemorySize = GetSystemMemorySizeAbove4gb();
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Type19Record->StartingAddress = 0xFFFFFFFF;
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Type19Record->ExtendedStartingAddress = 0xFFFFFFFF;
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Type19Record->ExtendedEndingAddress = TotalMemorySize + 0xFFFFFFFF - 1;
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MemArrayMappedAddrSmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
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Status = Smbios->Add(Smbios, NULL, &MemArrayMappedAddrSmbiosHandle, (EFI_SMBIOS_TABLE_HEADER*)Type19Record);
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FreePool(Type19Record);
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ASSERT_EFI_ERROR(Status);
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return Status;
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}
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