system76-edk2/CorebootModulePkg/CbSupportDxe/CbSupportDxe.c

/** @file
  This driver will report some MMIO/IO resources to dxe core, extract smbios and acpi
  tables from coreboot and install.

  Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/
#include "CbSupportDxe.h"

/**
  Reserve MMIO/IO resource in GCD

  @param  IsMMIO        Flag of whether it is mmio resource or io resource.
  @param  GcdType       Type of the space.
  @param  BaseAddress   Base address of the space.
  @param  Length        Length of the space.
  @param  Alignment     Align with 2^Alignment
  @param  ImageHandle   Handle for the image of this driver.

  @retval EFI_SUCCESS   Reserve successful
**/
EFI_STATUS
CbReserveResourceInGcd (
  IN BOOLEAN               IsMMIO,
  IN UINTN                 GcdType,
  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
  IN UINT64                Length,
  IN UINTN                 Alignment,
  IN EFI_HANDLE            ImageHandle
  )
{
  EFI_STATUS               Status;

  if (IsMMIO) {
    Status = gDS->AddMemorySpace (
                    GcdType,
                    BaseAddress,
                    Length,
                    EFI_MEMORY_UC
                    );
    if (EFI_ERROR (Status)) {
      DEBUG ((
        EFI_D_ERROR,
        "Failed to add memory space :0x%lx 0x%lx\n",
        BaseAddress,
        Length
        ));
    }
    ASSERT_EFI_ERROR (Status);
    Status = gDS->AllocateMemorySpace (
                    EfiGcdAllocateAddress,
                    GcdType,
                    Alignment,
                    Length,
                    &BaseAddress,
                    ImageHandle,
                    NULL
                    );
    ASSERT_EFI_ERROR (Status);
  } else {
    Status = gDS->AddIoSpace (
                    GcdType,
                    BaseAddress,
                    Length
                    );
    ASSERT_EFI_ERROR (Status);
    Status = gDS->AllocateIoSpace (
                    EfiGcdAllocateAddress,
                    GcdType,
                    Alignment,
                    Length,
                    &BaseAddress,
                    ImageHandle,
                    NULL
                    );
    ASSERT_EFI_ERROR (Status);
  }
  return Status;
}


/**
  Main entry for the Coreboot Support DXE module.

  @param[in] ImageHandle    The firmware allocated handle for the EFI image.
  @param[in] SystemTable    A pointer to the EFI System Table.

  @retval EFI_SUCCESS       The entry point is executed successfully.
  @retval other             Some error occurs when executing this entry point.

**/
EFI_STATUS
EFIAPI
CbDxeEntryPoint (
  IN EFI_HANDLE         ImageHandle,
  IN EFI_SYSTEM_TABLE   *SystemTable
  )
{
  EFI_STATUS Status;
  EFI_HOB_GUID_TYPE  *GuidHob;
  SYSTEM_TABLE_INFO  *pSystemTableInfo;
  FRAME_BUFFER_INFO  *FbInfo;

  Status = EFI_SUCCESS;
  //
  // Report MMIO/IO Resources
  //
  Status = CbReserveResourceInGcd (TRUE, EfiGcdMemoryTypeMemoryMappedIo, 0xFEC00000, SIZE_4KB, 0, SystemTable); // IOAPIC
  ASSERT_EFI_ERROR (Status);

  Status = CbReserveResourceInGcd (TRUE, EfiGcdMemoryTypeMemoryMappedIo, 0xFED00000, SIZE_1KB, 0, SystemTable); // HPET
  ASSERT_EFI_ERROR (Status);

  //
  // Find the system table information guid hob
  //
  GuidHob = GetFirstGuidHob (&gUefiSystemTableInfoGuid);
  ASSERT (GuidHob != NULL);
  pSystemTableInfo = (SYSTEM_TABLE_INFO *)GET_GUID_HOB_DATA (GuidHob);

  //
  // Install Acpi Table
  //
  if (pSystemTableInfo->AcpiTableBase != 0 && pSystemTableInfo->AcpiTableSize != 0) {
    DEBUG ((EFI_D_ERROR, "Install Acpi Table at 0x%lx, length 0x%x\n", pSystemTableInfo->AcpiTableBase, pSystemTableInfo->AcpiTableSize));
    Status = gBS->InstallConfigurationTable (&gEfiAcpiTableGuid, (VOID *)(UINTN)pSystemTableInfo->AcpiTableBase);
    ASSERT_EFI_ERROR (Status);
  }

  //
  // Install Smbios Table
  //
  if (pSystemTableInfo->SmbiosTableBase != 0 && pSystemTableInfo->SmbiosTableSize != 0) {
    DEBUG ((EFI_D_ERROR, "Install Smbios Table at 0x%lx, length 0x%x\n", pSystemTableInfo->SmbiosTableBase, pSystemTableInfo->SmbiosTableSize));
    Status = gBS->InstallConfigurationTable (&gEfiSmbiosTableGuid, (VOID *)(UINTN)pSystemTableInfo->SmbiosTableBase);
    ASSERT_EFI_ERROR (Status);
  }

  //
  // Find the frame buffer information and update PCDs
  //
  GuidHob = GetFirstGuidHob (&gUefiFrameBufferInfoGuid);
  if (GuidHob != NULL) {
    FbInfo  = (FRAME_BUFFER_INFO *)GET_GUID_HOB_DATA (GuidHob);
    Status = PcdSet32S (PcdVideoHorizontalResolution, FbInfo->HorizontalResolution);
    ASSERT_EFI_ERROR (Status);
    Status = PcdSet32S (PcdVideoVerticalResolution, FbInfo->VerticalResolution);
    ASSERT_EFI_ERROR (Status);
    Status = PcdSet32S (PcdSetupVideoHorizontalResolution, FbInfo->HorizontalResolution);
    ASSERT_EFI_ERROR (Status);
    Status = PcdSet32S (PcdSetupVideoVerticalResolution, FbInfo->VerticalResolution);
    ASSERT_EFI_ERROR (Status);
  }

  return EFI_SUCCESS;
}