[PATCH edk2-platforms v2 4/9] Platform/NXP/LX2160ARDB: Add ArmPlatformLib

["Pankaj Bansal" <pankaj.bansal@nxp.com>]

From: Pankaj Bansal <pankaj.bansal@nxp.com>

Add ArmPlatformLib for LX2160ARDB platform that is based on
ArmPlatformPkg/Library/ArmPlatformLibNull.

Apart from the the interfaces exposed by ArmPlatformLibNull, this
library also implements gPlatformGetClockPpi, which is specific to NXP
SOCs' based platforms.

Refer edk2-platforms/Silicon/NXP/Include/Ppi/NxpPlatformGetClock.h for
the details.

Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
---

Notes:
    V2:
    - New commit
    - split Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ in two parts
      part containing gPlatformGetClockPpi is put before PL011UartClockLib
      implementation.

 Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.inf          |  39 ++++++
 Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.c            | 145 ++++++++++++++++++++
 Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLibMem.c         |  28 ++++
 Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/AArch64/ArmPlatformHelper.S |  45 ++++++
 4 files changed, 257 insertions(+)

diff --git a/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.inf b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.inf
new file mode 100644
index 000000000000..743836e57141
--- /dev/null
+++ b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.inf
@@ -0,0 +1,39 @@
+#/* @file
+#  Copyright 2018, 2020 NXP
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#*/
+
+[Defines]
+  INF_VERSION                    = 0x0001001A
+  BASE_NAME                      = PlatformLib
+  FILE_GUID                      = d1361285-8a47-421c-9efd-6b262c9093fc
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = ArmPlatformLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  ArmPkg/ArmPkg.dec
+  ArmPlatformPkg/ArmPlatformPkg.dec
+  Silicon/NXP/NxpQoriqLs.dec
+
+[LibraryClasses]
+  ArmLib
+  DebugLib
+
+[Sources.common]
+  ArmPlatformLib.c
+  ArmPlatformLibMem.c
+
+[Sources.AArch64]
+  AArch64/ArmPlatformHelper.S
+
+[FixedPcd]
+  gArmTokenSpaceGuid.PcdArmPrimaryCoreMask
+  gArmTokenSpaceGuid.PcdArmPrimaryCore
+
+[Ppis]
+  gArmMpCoreInfoPpiGuid
diff --git a/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.c b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.c
new file mode 100644
index 000000000000..806cfd180bee
--- /dev/null
+++ b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLib.c
@@ -0,0 +1,145 @@
+/** @file
+*
+*  Copyright 2018-2020 NXP
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Library/ArmLib.h>
+#include <Library/ArmPlatformLib.h>
+
+#include <Ppi/ArmMpCoreInfo.h>
+#include <Ppi/NxpPlatformGetClock.h>
+
+ARM_CORE_INFO mLX2160aMpCoreInfoTable[] = {
+  {
+    // Cluster 0, Core 0
+    0x0, 0x0,
+
+    // MP Core MailBox Set/Get/Clear Addresses and Clear Value
+    (EFI_PHYSICAL_ADDRESS)0,
+    (EFI_PHYSICAL_ADDRESS)0,
+    (EFI_PHYSICAL_ADDRESS)0,
+    (UINT64)0xFFFFFFFF
+  }
+};
+
+/**
+  Return the current Boot Mode
+
+  This function returns the boot reason on the platform
+
+**/
+EFI_BOOT_MODE
+ArmPlatformGetBootMode (
+  VOID
+  )
+{
+  return BOOT_WITH_FULL_CONFIGURATION;
+}
+
+/**
+  Get the clocks supplied by Platform(Board) to NXP Layerscape SOC IPs
+
+  @param[in]  ClockType  Variable of Type NXP_IP_CLOCK. Indicates which IP clock
+                         is to be retrieved.
+  @param[in]  ...        Variable argument list which is parsed based on
+                         ClockType. e.g. if the ClockType is NXP_I2C_CLOCK, then
+                         the second argument will be interpreted as controller
+                         number.
+                         if ClockType is NXP_CORE_CLOCK, then second argument
+                         is interpreted as cluster number and third argument is
+                         interpreted as core number (within the cluster)
+
+  @return                Actual Clock Frequency. Return value 0 should be
+                         interpreted as clock not being provided to IP.
+**/
+UINT64
+EFIAPI
+NxpPlatformGetClock(
+  IN  UINT32  ClockType,
+  ...
+  )
+{
+  UINT64      Clock;
+  VA_LIST     Args;
+
+  Clock = 0;
+
+  VA_START (Args, ClockType);
+
+  switch (ClockType) {
+  case NXP_SYSTEM_CLOCK:
+    Clock = 100 * 1000 * 1000; // 100 MHz
+    break;
+  case NXP_I2C_CLOCK:
+  case NXP_UART_CLOCK:
+    Clock = NxpPlatformGetClock (NXP_SYSTEM_CLOCK);
+    break;
+  default:
+    break;
+  }
+
+  VA_END (Args);
+
+  return Clock;
+}
+
+/**
+  Initialize controllers that must setup in the normal world
+
+  This function is called by the ArmPlatformPkg/PrePi or ArmPlatformPkg/PlatformPei
+  in the PEI phase.
+
+**/
+EFI_STATUS
+ArmPlatformInitialize (
+  IN  UINTN                     MpId
+  )
+{
+  //TODO: Implement me
+
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+PrePeiCoreGetMpCoreInfo (
+  OUT UINTN                   *CoreCount,
+  OUT ARM_CORE_INFO           **ArmCoreTable
+  )
+{
+  if (ArmIsMpCore()) {
+    *CoreCount    = sizeof(mLX2160aMpCoreInfoTable) / sizeof(ARM_CORE_INFO);
+    *ArmCoreTable = mLX2160aMpCoreInfoTable;
+    return EFI_SUCCESS;
+  } else {
+    return EFI_UNSUPPORTED;
+  }
+}
+
+ARM_MP_CORE_INFO_PPI mMpCoreInfoPpi = { PrePeiCoreGetMpCoreInfo };
+NXP_PLATFORM_GET_CLOCK_PPI gPlatformGetClockPpi = { NxpPlatformGetClock };
+
+EFI_PEI_PPI_DESCRIPTOR      gPlatformPpiTable[] = {
+  {
+    EFI_PEI_PPI_DESCRIPTOR_PPI,
+    &gArmMpCoreInfoPpiGuid,
+    &mMpCoreInfoPpi
+  }
+};
+
+VOID
+ArmPlatformGetPlatformPpiList (
+  OUT UINTN                   *PpiListSize,
+  OUT EFI_PEI_PPI_DESCRIPTOR  **PpiList
+  )
+{
+  if (ArmIsMpCore()) {
+    *PpiListSize = sizeof(gPlatformPpiTable);
+    *PpiList = gPlatformPpiTable;
+  } else {
+    *PpiListSize = 0;
+    *PpiList = NULL;
+  }
+}
diff --git a/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLibMem.c b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLibMem.c
new file mode 100644
index 000000000000..ad6862dd81eb
--- /dev/null
+++ b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/ArmPlatformLibMem.c
@@ -0,0 +1,28 @@
+/** @file
+*
+*  Copyright 2018, 2020 NXP
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Library/ArmPlatformLib.h>
+#include <Library/DebugLib.h>
+
+/**
+  Return the Virtual Memory Map of your platform
+
+  This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
+
+  @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
+                                    Virtual Memory mapping. This array must be ended by a zero-filled
+                                    entry
+
+**/
+VOID
+ArmPlatformGetVirtualMemoryMap (
+  IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
+  )
+{
+  ASSERT(0);
+}
diff --git a/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/AArch64/ArmPlatformHelper.S b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/AArch64/ArmPlatformHelper.S
new file mode 100644
index 000000000000..b7c6dbdc2e61
--- /dev/null
+++ b/Platform/NXP/LX2160aRdbPkg/Library/ArmPlatformLib/AArch64/ArmPlatformHelper.S
@@ -0,0 +1,45 @@
+//
+//  Copyright (c) 2012-2013, ARM Limited. All rights reserved.
+//
+//  SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//
+
+#include <AsmMacroIoLibV8.h>
+#include <Library/ArmLib.h>
+
+ASM_FUNC(ArmPlatformPeiBootAction)
+  ret
+
+//UINTN
+//ArmPlatformGetCorePosition (
+//  IN UINTN MpId
+//  );
+// With this function: CorePos = (ClusterId * 4) + CoreId
+ASM_FUNC(ArmPlatformGetCorePosition)
+  and   x1, x0, #ARM_CORE_MASK
+  and   x0, x0, #ARM_CLUSTER_MASK
+  add   x0, x1, x0, LSR #6
+  ret
+
+//UINTN
+//ArmPlatformGetPrimaryCoreMpId (
+//  VOID
+//  );
+ASM_FUNC(ArmPlatformGetPrimaryCoreMpId)
+  MOV32  (w0, FixedPcdGet32 (PcdArmPrimaryCore))
+  ret
+
+//UINTN
+//ArmPlatformIsPrimaryCore (
+//  IN UINTN MpId
+//  );
+ASM_FUNC(ArmPlatformIsPrimaryCore)
+  MOV32  (w1, FixedPcdGet32 (PcdArmPrimaryCoreMask))
+  and   x0, x0, x1
+  MOV32  (w1, FixedPcdGet32 (PcdArmPrimaryCore))
+  cmp   w0, w1
+  mov   x0, #1
+  mov   x1, #0
+  csel  x0, x0, x1, eq
+  ret
-- 
2.17.1