[PATCH edk2-platforms 3/7] Platform/NXP: LX2160aRdbPkg: Add PlatformDxe driver

[Wasim Khan <wasim.khan@oss.nxp.com>]

From: Wasim Khan <wasim.khan@nxp.com>

Add PlatformDxe to do platform specific work.
At present it perform platform specific Pci initialization.

Signed-off-by: Wasim Khan <wasim.khan@nxp.com>
---
 Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf | 35 +++++++++
 Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c   | 78 ++++++++++++++++++++
 2 files changed, 113 insertions(+)

diff --git a/Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf b/Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf
new file mode 100644
index 000000000000..2514adf1d69d
--- /dev/null
+++ b/Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.inf
@@ -0,0 +1,35 @@
+## @file
+#
+#  Copyright 2020 NXP
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION               = 0x00010019
+  BASE_NAME                 = PlatformDxe
+  FILE_GUID                 = C4063EBA-7729-11EA-BC55-0232AC130003
+  MODULE_TYPE               = DXE_DRIVER
+  VERSION_STRING            = 1.0
+  ENTRY_POINT               = PlatformDxeEntryPoint
+
+[Sources]
+  PlatformDxe.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  Silicon/NXP/Chassis3V2/Chassis3V2.dec
+  Silicon/NXP/LX2160A/LX2160A.dec
+  Silicon/NXP/NxpQoriqLs.dec
+
+[LibraryClasses]
+  PcdLib
+  UefiDriverEntryPoint
+
+[Pcd]
+  gNxpQoriqLsTokenSpaceGuid.PcdPciCfgShiftEnable
+  gNxpQoriqLsTokenSpaceGuid.PcdPciLsGen4Ctrl
+
+[Depex]
+  TRUE
diff --git a/Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c b/Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c
new file mode 100644
index 000000000000..73599aaeb7bf
--- /dev/null
+++ b/Platform/NXP/LX2160aRdbPkg/Drivers/PlatformDxe/PlatformDxe.c
@@ -0,0 +1,78 @@
+/** @file
+*
+*  Copyright 2020 NXP
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+#include <Library/PcdLib.h>
+#include <Library/SocLib.h>
+#include <Soc.h>
+
+/**
+  Enable PciCfgShift feature for LX2160-Rev2
+
+**/
+VOID
+EnableCfgShift (
+  VOID
+  )
+{
+  UINT32 Svr;
+
+  Svr = SocGetSvr ();
+  if ((SVR_SOC_VER(Svr) == SVR_LX2160A) && (SVR_MAJOR(Svr) == 0x2)) {
+    PcdSetBoolS (PcdPciCfgShiftEnable, TRUE);
+  }
+}
+
+/**
+  Enable Layerscape Gen4 controller for LX2160A-Rev1
+
+**/
+VOID
+EnablePciController (
+  VOID
+  )
+{
+  UINT32 Svr;
+
+  Svr = SocGetSvr ();
+  if ((SVR_SOC_VER(Svr) == SVR_LX2160A) && (SVR_MAJOR(Svr) == 0x1)) {
+    PcdSetBoolS (PcdPciLsGen4Ctrl, TRUE);
+  }
+}
+
+/**
+  Platfrom Specific PCI Initialization
+
+**/
+VOID
+PlatformPciInit (
+  VOID
+  )
+{
+  EnableCfgShift ();
+  EnablePciController ();
+}
+
+/**
+  The entry point for PlatformDxe driver. This driver
+  intends to perform platform specific initialization.
+
+  @param[in] ImageHandle     The image handle of the driver.
+  @param[in] SystemTable     The system table.
+
+  @retval EFI_SUCCESS         Driver initialization success.
+
+**/
+EFI_STATUS
+EFIAPI
+PlatformDxeEntryPoint (
+  IN EFI_HANDLE                   ImageHandle,
+  IN EFI_SYSTEM_TABLE             *SystemTable
+  )
+{
+  // Platfrom Specific PCI Initialization
+  PlatformPciInit ();
+  return EFI_SUCCESS;
+}
-- 
2.7.4