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What does the platform driver _do_?
(No comments on the code.)
/
Leif
On Wed, Nov 28, 2018 at 08:31:22PM +0530, Meenakshi Aggarwal wrote:
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Meenakshi Aggarwal <meenakshi.aggar...@nxp.com>
> ---
> .../Drivers/PlatformDxe/PlatformDxe.c | 119
> +++++++++++++++++++++
> .../Drivers/PlatformDxe/PlatformDxe.inf | 58 ++++++++++
> 2 files changed, 177 insertions(+)
> create mode 100644
> Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c
> create mode 100644
> Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf
>
> diff --git a/Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c
> b/Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c
> new file mode 100644
> index 0000000..7ce7318
> --- /dev/null
> +++ b/Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c
> @@ -0,0 +1,119 @@
> +/** @file
> + LS1043 DXE platform driver.
> +
> + Copyright 2018 NXP
> +
> + This program and the accompanying materials are licensed and made available
> + under the terms and conditions of the BSD License which accompanies this
> + distribution. The full text of the license may be found at
> + http://opensource.org/licenses/bsd-license.php
> +
> + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
> IMPLIED.
> +**/
> +
> +#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 <Protocol/NonDiscoverableDevice.h>
> +
> +typedef struct {
> + EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR StartDesc;
> + UINT8 EndDesc;
> +} ADDRESS_SPACE_DESCRIPTOR;
> +
> +STATIC ADDRESS_SPACE_DESCRIPTOR mI2cDesc[FixedPcdGet64
> (PcdNumI2cController)];
> +
> +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 < FixedPcdGet32 (PcdNumI2cController); 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 = FixedPcdGet64 (PcdI2c0BaseAddr)
> +
> + (Index * FixedPcdGet32
> (PcdI2cSize));
> + mI2cDesc[Index].StartDesc.AddrRangeMax =
> mI2cDesc[Index].StartDesc.AddrRangeMin +
> + FixedPcdGet32 (PcdI2cSize) - 1;
> + mI2cDesc[Index].StartDesc.AddrTranslationOffset = 0;
> + mI2cDesc[Index].StartDesc.AddrLen = FixedPcdGet32 (PcdI2cSize);
> +
> + 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;
> +}
> diff --git a/Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf
> b/Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf
> new file mode 100644
> index 0000000..91d6ad3
> --- /dev/null
> +++ b/Platform/NXP/LS1043aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf
> @@ -0,0 +1,58 @@
> +## @file
> +#
> +# Component description file for LS1043 DXE platform driver.
> +#
> +# Copyright 2018 NXP
> +#
> +# This program and the accompanying materials
> +# are licensed and made available under the terms and conditions of the BSD
> License
> +# which accompanies this distribution. The full text of the license may be
> found at
> +# http://opensource.org/licenses/bsd-license.php
> +#
> +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
> IMPLIED.
> +#
> +##
> +
> +[Defines]
> + INF_VERSION = 0x0001001A
> + BASE_NAME = PlatformDxe
> + FILE_GUID = 21108101-adcd-4123-930e-a2354a554db7
> + MODULE_TYPE = DXE_DRIVER
> + VERSION_STRING = 1.0
> + ENTRY_POINT = PlatformDxeEntryPoint
> +
> +[Sources]
> + PlatformDxe.c
> +
> +[Packages]
> + ArmPkg/ArmPkg.dec
> + MdePkg/MdePkg.dec
> + MdeModulePkg/MdeModulePkg.dec
> + Silicon/Maxim/Library/Ds1307RtcLib/Ds1307RtcLib.dec
> + Silicon/NXP/NxpQoriqLs.dec
> +
> +[LibraryClasses]
> + BaseLib
> + BaseMemoryLib
> + DebugLib
> + MemoryAllocationLib
> + PcdLib
> + UefiBootServicesTableLib
> + UefiDriverEntryPoint
> + UefiLib
> +
> +[Guids]
> + gNxpNonDiscoverableI2cMasterGuid
> +
> +[Protocols]
> + gEdkiiNonDiscoverableDeviceProtocolGuid ## PRODUCES
> + gDs1307RealTimeClockLibI2cMasterProtocolGuid ## PRODUCES
> +
> +[FixedPcd]
> + gNxpQoriqLsTokenSpaceGuid.PcdI2c0BaseAddr
> + gNxpQoriqLsTokenSpaceGuid.PcdI2cSize
> + gNxpQoriqLsTokenSpaceGuid.PcdNumI2cController
> +
> +[Depex]
> + TRUE
> --
> 1.9.1
>
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