system76-edk2/UnitTestFrameworkPkg/Library/UnitTestUefiBootServicesTableLib/UnitTestUefiBootServicesTableLibMisc.c

/** @file
  Implementation of miscellaneous services in the UEFI Boot Services table for use in unit tests.

Copyright (c) Microsoft Corporation
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UnitTestUefiBootServicesTableLib.h"

/**
  Returns a monotonically increasing count for the platform.

  @param[out]  Count            The pointer to returned value.

  @retval EFI_SUCCESS           The next monotonic count was returned.
  @retval EFI_INVALID_PARAMETER Count is NULL.
  @retval EFI_DEVICE_ERROR      The device is not functioning properly.

**/
EFI_STATUS
EFIAPI
UnitTestGetNextMonotonicCount (
  OUT UINT64  *Count
  )
{
  STATIC  UINT64  StaticCount = 0;

  *Count = StaticCount++;

  return EFI_SUCCESS;
}

/**
  Introduces a fine-grained stall.

  @param  Microseconds           The number of microseconds to stall execution.

  @retval EFI_SUCCESS            Execution was stalled for at least the requested
                                 amount of microseconds.
  @retval EFI_NOT_AVAILABLE_YET  gMetronome is not available yet

**/
EFI_STATUS
EFIAPI
UnitTestStall (
  IN UINTN  Microseconds
  )
{
  return EFI_NOT_AVAILABLE_YET;
}

/**
  Sets the system's watchdog timer.

  @param  Timeout         The number of seconds to set the watchdog timer to.
                          A value of zero disables the timer.
  @param  WatchdogCode    The numeric code to log on a watchdog timer timeout
                          event. The firmware reserves codes 0x0000 to 0xFFFF.
                          Loaders and operating systems may use other timeout
                          codes.
  @param  DataSize        The size, in bytes, of WatchdogData.
  @param  WatchdogData    A data buffer that includes a Null-terminated Unicode
                          string, optionally followed by additional binary data.
                          The string is a description that the call may use to
                          further indicate the reason to be logged with a
                          watchdog event.

  @return EFI_SUCCESS               Timeout has been set
  @return EFI_NOT_AVAILABLE_YET     WatchdogTimer is not available yet
  @return EFI_UNSUPPORTED           System does not have a timer (currently not used)
  @return EFI_DEVICE_ERROR          Could not complete due to hardware error

**/
EFI_STATUS
EFIAPI
UnitTestSetWatchdogTimer (
  IN UINTN   Timeout,
  IN UINT64  WatchdogCode,
  IN UINTN   DataSize,
  IN CHAR16  *WatchdogData OPTIONAL
  )
{
  return EFI_NOT_AVAILABLE_YET;
}

/**
  Connects one or more drivers to a controller.

  @param  ControllerHandle      The handle of the controller to which driver(s) are to be connected.
  @param  DriverImageHandle     A pointer to an ordered list handles that support the
                                EFI_DRIVER_BINDING_PROTOCOL.
  @param  RemainingDevicePath   A pointer to the device path that specifies a child of the
                                controller specified by ControllerHandle.
  @param  Recursive             If TRUE, then ConnectController() is called recursively
                                until the entire tree of controllers below the controller specified
                                by ControllerHandle have been created. If FALSE, then
                                the tree of controllers is only expanded one level.

  @retval EFI_SUCCESS           1) One or more drivers were connected to ControllerHandle.
                                2) No drivers were connected to ControllerHandle, but
                                RemainingDevicePath is not NULL, and it is an End Device
                                Path Node.
  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
  @retval EFI_NOT_FOUND         1) There are no EFI_DRIVER_BINDING_PROTOCOL instances
                                present in the system.
                                2) No drivers were connected to ControllerHandle.
  @retval EFI_SECURITY_VIOLATION
                                The user has no permission to start UEFI device drivers on the device path
                                associated with the ControllerHandle or specified by the RemainingDevicePath.

**/
EFI_STATUS
EFIAPI
UnitTestConnectController (
  IN  EFI_HANDLE                ControllerHandle,
  IN  EFI_HANDLE                *DriverImageHandle    OPTIONAL,
  IN  EFI_DEVICE_PATH_PROTOCOL  *RemainingDevicePath  OPTIONAL,
  IN  BOOLEAN                   Recursive
  )
{
  return EFI_SUCCESS; // Return success for now
}

/**
  Disconnects a controller from a driver

  @param  ControllerHandle                      ControllerHandle The handle of
                                                the controller from which
                                                driver(s)  are to be
                                                disconnected.
  @param  DriverImageHandle                     DriverImageHandle The driver to
                                                disconnect from ControllerHandle.
  @param  ChildHandle                           ChildHandle The handle of the
                                                child to destroy.

  @retval EFI_SUCCESS                           One or more drivers were
                                                disconnected from the controller.
  @retval EFI_SUCCESS                           On entry, no drivers are managing
                                                ControllerHandle.
  @retval EFI_SUCCESS                           DriverImageHandle is not NULL,
                                                and on entry DriverImageHandle is
                                                not managing ControllerHandle.
  @retval EFI_INVALID_PARAMETER                 ControllerHandle is NULL.
  @retval EFI_INVALID_PARAMETER                 DriverImageHandle is not NULL,
                                                and it is not a valid EFI_HANDLE.
  @retval EFI_INVALID_PARAMETER                 ChildHandle is not NULL, and it
                                                is not a valid EFI_HANDLE.
  @retval EFI_OUT_OF_RESOURCES                  There are not enough resources
                                                available to disconnect any
                                                drivers from ControllerHandle.
  @retval EFI_DEVICE_ERROR                      The controller could not be
                                                disconnected because of a device
                                                error.

**/
EFI_STATUS
EFIAPI
UnitTestDisconnectController (
  IN  EFI_HANDLE  ControllerHandle,
  IN  EFI_HANDLE  DriverImageHandle  OPTIONAL,
  IN  EFI_HANDLE  ChildHandle        OPTIONAL
  )
{
  return EFI_SUCCESS; // Return success for now
}

/**
  Computes and returns a 32-bit CRC for a data buffer.

  @param[in]   Data             A pointer to the buffer on which the 32-bit CRC is to be computed.
  @param[in]   DataSize         The number of bytes in the buffer Data.
  @param[out]  Crc32            The 32-bit CRC that was computed for the data buffer specified by Data
                                and DataSize.

  @retval EFI_SUCCESS           The 32-bit CRC was computed for the data buffer and returned in
                                Crc32.
  @retval EFI_INVALID_PARAMETER Data is NULL.
  @retval EFI_INVALID_PARAMETER Crc32 is NULL.
  @retval EFI_INVALID_PARAMETER DataSize is 0.

**/
EFI_STATUS
EFIAPI
UnitTestCalculateCrc32 (
  IN  VOID    *Data,
  IN  UINTN   DataSize,
  OUT UINT32  *Crc32
  )
{
  if ((Data == NULL) || (Crc32 == NULL) || (DataSize == 0)) {
    return EFI_INVALID_PARAMETER;
  }

  *Crc32 = CalculateCrc32 (Data, DataSize);

  return EFI_SUCCESS;
}