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2024-03-22 a0752693d998599af469473b8dc239ef973a012f

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/** @file 
  LS1043 DXE platform driver. 
 
  Copyright 2018-2020 NXP 
 
  SPDX-License-Identifier: BSD-2-Clause-Patent 
 
**/ 
 
#include <Library/BaseLib.h> 
#include <Library/BaseMemoryLib.h> 
#include <Library/DebugLib.h> 
#include <Library/MemoryAllocationLib.h> 
#include <Library/PcdLib.h> 
#include <Library/UefiBootServicesTableLib.h> 
#include <Library/UefiLib.h> 
#include <Soc.h> 
 
#include <Protocol/NonDiscoverableDevice.h> 
 
typedef struct { 
  EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR StartDesc; 
  UINT8 EndDesc; 
} ADDRESS_SPACE_DESCRIPTOR; 
 
STATIC ADDRESS_SPACE_DESCRIPTOR mI2cDesc[LS1043A_I2C_NUM_CONTROLLERS]; 
 
STATIC 
EFI_STATUS 
RegisterDevice ( 
  IN  EFI_GUID                        *TypeGuid, 
  IN  ADDRESS_SPACE_DESCRIPTOR        *Desc, 
  OUT EFI_HANDLE                      *Handle 
  ) 
{ 
  NON_DISCOVERABLE_DEVICE             *Device; 
  EFI_STATUS                          Status; 
 
  Device = (NON_DISCOVERABLE_DEVICE *)AllocateZeroPool (sizeof (*Device)); 
  if (Device == NULL) { 
    return EFI_OUT_OF_RESOURCES; 
  } 
 
  Device->Type = TypeGuid; 
  Device->DmaType = NonDiscoverableDeviceDmaTypeNonCoherent; 
  Device->Resources = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Desc; 
 
  Status = gBS->InstallMultipleProtocolInterfaces (Handle, 
                  &gEdkiiNonDiscoverableDeviceProtocolGuid, Device, 
                  NULL); 
  if (EFI_ERROR (Status)) { 
    goto FreeDevice; 
  } 
  return EFI_SUCCESS; 
 
FreeDevice: 
  FreePool (Device); 
 
  return Status; 
} 
 
VOID 
PopulateI2cInformation ( 
  IN VOID 
  ) 
{ 
  UINT32 Index; 
 
  for (Index = 0; Index < ARRAY_SIZE (mI2cDesc); Index++) { 
    mI2cDesc[Index].StartDesc.Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR; 
    mI2cDesc[Index].StartDesc.Len = sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3; 
    mI2cDesc[Index].StartDesc.ResType = ACPI_ADDRESS_SPACE_TYPE_MEM; 
    mI2cDesc[Index].StartDesc.GenFlag = 0; 
    mI2cDesc[Index].StartDesc.SpecificFlag = 0; 
    mI2cDesc[Index].StartDesc.AddrSpaceGranularity = 32; 
    mI2cDesc[Index].StartDesc.AddrRangeMin = LS1043A_I2C0_PHYS_ADDRESS + 
                                             (Index * LS1043A_I2C_SIZE); 
    mI2cDesc[Index].StartDesc.AddrRangeMax = mI2cDesc[Index].StartDesc.AddrRangeMin + 
                                             LS1043A_I2C_SIZE - 1; 
    mI2cDesc[Index].StartDesc.AddrTranslationOffset = 0; 
    mI2cDesc[Index].StartDesc.AddrLen = LS1043A_I2C_SIZE; 
 
    mI2cDesc[Index].EndDesc = ACPI_END_TAG_DESCRIPTOR; 
  } 
} 
 
EFI_STATUS 
EFIAPI 
PlatformDxeEntryPoint ( 
  IN EFI_HANDLE         ImageHandle, 
  IN EFI_SYSTEM_TABLE   *SystemTable 
  ) 
{ 
  EFI_STATUS                      Status; 
  EFI_HANDLE                      Handle; 
 
  Handle = NULL; 
 
  PopulateI2cInformation (); 
 
  Status = RegisterDevice (&gNxpNonDiscoverableI2cMasterGuid, 
             &mI2cDesc[0], &Handle); 
  ASSERT_EFI_ERROR (Status); 
 
  // 
  // Install the DS1307 I2C Master protocol on this handle so the RTC driver 
  // can identify it as the I2C master it can invoke directly. 
  // 
  Status = gBS->InstallProtocolInterface (&Handle, 
                  &gDs1307RealTimeClockLibI2cMasterProtocolGuid, 
                  EFI_NATIVE_INTERFACE, NULL); 
  ASSERT_EFI_ERROR (Status); 
 
  return EFI_SUCCESS; 
}