mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-11 14:28:08 +01:00
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
|
/** @file
|
||
|
|
|
||
|
|
The KvmtoolPlatformDxe performs the platform specific initialization like:
|
||
|
|
- It decides if the firmware should expose ACPI or Device Tree-based
|
||
|
|
hardware description to the operating system.
|
||
|
|
|
||
|
|
Copyright (c) 2018 - 2020, ARM Limited. All rights reserved.
|
||
|
|
|
||
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
|
||
|
|
**/
|
||
|
|
|
||
|
|
#include <Guid/VariableFormat.h>
|
||
|
|
#include <Library/BaseLib.h>
|
||
|
|
#include <Library/DebugLib.h>
|
||
|
|
#include <Library/UefiBootServicesTableLib.h>
|
||
|
|
#include <Protocol/FdtClient.h>
|
||
|
|
|
||
|
|
/** Decide if the firmware should expose ACPI tables or Device Tree and
|
||
|
|
install the appropriate protocol interface.
|
||
|
|
|
||
|
|
Note: This function is derived from "ArmVirtPkg/PlatformHasAcpiDtDxe",
|
||
|
|
by dropping the word size check, and the fw_cfg check.
|
||
|
|
|
||
|
|
@param [in] ImageHandle Handle for this image.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS Success.
|
||
|
|
@retval EFI_OUT_OF_RESOURCES There was not enough memory to install the
|
||
|
|
protocols.
|
||
|
|
@retval EFI_INVALID_PARAMETER A parameter is invalid.
|
||
|
|
|
||
|
|
**/
|
||
|
|
STATIC
|
||
|
|
EFI_STATUS
|
||
|
|
PlatformHasAcpiDt (
|
||
|
|
IN EFI_HANDLE ImageHandle
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (!PcdGetBool (PcdForceNoAcpi)) {
|
||
|
|
// Expose ACPI tables
|
||
|
|
return gBS->InstallProtocolInterface (
|
||
|
|
&ImageHandle,
|
||
|
|
&gEdkiiPlatformHasAcpiGuid,
|
||
|
|
EFI_NATIVE_INTERFACE,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Expose the Device Tree.
|
||
|
|
return gBS->InstallProtocolInterface (
|
||
|
|
&ImageHandle,
|
||
|
|
&gEdkiiPlatformHasDeviceTreeGuid,
|
||
|
|
EFI_NATIVE_INTERFACE,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Entry point for Kvmtool Platform Dxe
|
||
|
|
|
||
|
|
@param [in] ImageHandle Handle for this image.
|
||
|
|
@param [in] SystemTable Pointer to the EFI system table.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS Success.
|
||
|
|
@retval EFI_OUT_OF_RESOURCES There was not enough memory to install the
|
||
|
|
protocols.
|
||
|
|
@retval EFI_INVALID_PARAMETER A parameter is invalid.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
KvmtoolPlatformDxeEntryPoint (
|
||
|
|
IN EFI_HANDLE ImageHandle,
|
||
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
|
||
|
|
Status = PlatformHasAcpiDt (ImageHandle);
|
||
|
|
ASSERT_EFI_ERROR (Status);
|
||
|
|
|
||
|
|
return Status;
|
||
|
|
}
|