/** @file
*  Multiple APIC Description Table (MADT)
*
*  Copyright (c) 2012 - 2016, ARM Limited. All rights reserved.
*
*  SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/

#include "ArmPlatform.h"
#include <Library/AcpiLib.h>
#include <Library/ArmLib.h>
#include <Library/PcdLib.h>
#include <IndustryStandard/Acpi.h>

//
// Multiple APIC Description Table
//
#ifdef ARM_JUNO_ACPI_5_0
  #pragma pack (1)

  typedef struct {
    EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER   Header;
    EFI_ACPI_5_0_GIC_STRUCTURE                            GicInterfaces[FixedPcdGet32 (PcdCoreCount)];
    EFI_ACPI_5_0_GIC_DISTRIBUTOR_STRUCTURE                GicDistributor;
  } EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE;

  #pragma pack ()

  EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
    {
      ARM_ACPI_HEADER (
        EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE,
        EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE,
        EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION
      ),
      //
      // MADT specific fields
      //
      0, // LocalApicAddress
      0, // Flags
    },
    {
      // Format: EFI_ACPI_5_0_GIC_STRUCTURE_INIT(GicId, AcpiCpuId, Flags, PmuIrq, GicBase)
      // Note: The GIC Structure of the primary CPU must be the first entry (see note in 5.2.12.14 GIC Structure of
      //       ACPI v5.0).
      //       On Juno we can change the primary CPU changing the SCC register. It is not currently supported in the
      //       Trusted Firmware. When supported, we will need to code to dynamically change the ordering.
      //       For now we leave CPU2 (A53-0) at the first position.
      //       The cores from a same cluster are kept together. It is not an ACPI requirement but in case the OSPM uses
      //       the ACPI ARM Parking protocol, it might want to wake up the cores in the order of this table.
      EFI_ACPI_5_0_GIC_STRUCTURE_INIT(2, 0, EFI_ACPI_5_0_GIC_ENABLED, 50, FixedPcdGet64 (PcdGicInterruptInterfaceBase)), // A53-0
      EFI_ACPI_5_0_GIC_STRUCTURE_INIT(3, 1, EFI_ACPI_5_0_GIC_ENABLED, 54, FixedPcdGet64 (PcdGicInterruptInterfaceBase)), // A53-1
      EFI_ACPI_5_0_GIC_STRUCTURE_INIT(4, 2, EFI_ACPI_5_0_GIC_ENABLED, 58, FixedPcdGet64 (PcdGicInterruptInterfaceBase)), // A53-2
      EFI_ACPI_5_0_GIC_STRUCTURE_INIT(5, 3, EFI_ACPI_5_0_GIC_ENABLED, 62, FixedPcdGet64 (PcdGicInterruptInterfaceBase)), // A53-3
      EFI_ACPI_5_0_GIC_STRUCTURE_INIT(0, 4, EFI_ACPI_5_0_GIC_ENABLED, 34, FixedPcdGet64 (PcdGicInterruptInterfaceBase)), // A57-0
      EFI_ACPI_5_0_GIC_STRUCTURE_INIT(1, 5, EFI_ACPI_5_0_GIC_ENABLED, 38, FixedPcdGet64 (PcdGicInterruptInterfaceBase))  // A57-1
    },
    EFI_ACPI_5_0_GIC_DISTRIBUTOR_INIT(0, FixedPcdGet64 (PcdGicDistributorBase), 0)
  };
#else
  #pragma pack (1)

  typedef struct {
    EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER   Header;
    EFI_ACPI_5_1_GIC_STRUCTURE                            GicInterfaces[FixedPcdGet32 (PcdCoreCount)];
    EFI_ACPI_5_1_GIC_DISTRIBUTOR_STRUCTURE                GicDistributor;
    EFI_ACPI_6_0_GIC_MSI_FRAME_STRUCTURE                  MsiFrame;
  } MULTIPLE_APIC_DESCRIPTION_TABLE;

  #pragma pack ()

  MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
    {
      ARM_ACPI_HEADER (
        EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE,
        MULTIPLE_APIC_DESCRIPTION_TABLE,
        EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION
      ),
      //
      // MADT specific fields
      //
      0, // LocalApicAddress
      0, // Flags
    },
    {
      // Format: EFI_ACPI_5_1_GICC_STRUCTURE_INIT(GicId, AcpiCpuUid, Flags, PmuIrq, GicBase, GicVBase, GicHBase,
      //                                          GsivId, GicRBase, Mpidr)
      // Note: The GIC Structure of the primary CPU must be the first entry (see note in 5.2.12.14 GICC Structure of
      //       ACPI v5.1).
      //       On Juno we can change the primary CPU changing the SCC register. It is not currently supported in the
      //       Trusted Firmware. When supported, we will need to code to dynamically change the ordering.
      //       For now we leave CPU2 (A53-0) at the first position.
      //       The cores from a same cluster are kept together. It is not an ACPI requirement but in case the OSPM uses
      //       the ACPI ARM Parking protocol, it might want to wake up the cores in the order of this table.
      EFI_ACPI_5_1_GICC_STRUCTURE_INIT( // A53-0
          2, 0, GET_MPID(1, 0), EFI_ACPI_5_0_GIC_ENABLED, 50, FixedPcdGet64 (PcdGicInterruptInterfaceBase),
          0x2C06F000, 0x2C04F000, 25, 0 /* GicRBase */),
      EFI_ACPI_5_1_GICC_STRUCTURE_INIT( // A53-1
          3, 1, GET_MPID(1, 1),  EFI_ACPI_5_0_GIC_ENABLED, 54, FixedPcdGet64 (PcdGicInterruptInterfaceBase),
          0x2C06F000, 0x2C04F000, 25, 0 /* GicRBase */),
      EFI_ACPI_5_1_GICC_STRUCTURE_INIT( // A53-2
          4, 2, GET_MPID(1, 2),  EFI_ACPI_5_0_GIC_ENABLED, 58, FixedPcdGet64 (PcdGicInterruptInterfaceBase),
          0x2C06F000, 0x2C04F000, 25, 0 /* GicRBase */),
      EFI_ACPI_5_1_GICC_STRUCTURE_INIT( // A53-3
          5, 3, GET_MPID(1, 3),  EFI_ACPI_5_0_GIC_ENABLED, 62, FixedPcdGet64 (PcdGicInterruptInterfaceBase),
          0x2C06F000, 0x2C04F000, 25, 0 /* GicRBase */),
      EFI_ACPI_5_1_GICC_STRUCTURE_INIT( // A57-0
          0, 4, GET_MPID(0, 0),  EFI_ACPI_5_0_GIC_ENABLED, 34, FixedPcdGet64 (PcdGicInterruptInterfaceBase),
          0x2C06F000, 0x2C04F000, 25, 0 /* GicRBase */),
      EFI_ACPI_5_1_GICC_STRUCTURE_INIT( // A57-1
          1, 5, GET_MPID(0, 1),  EFI_ACPI_5_0_GIC_ENABLED, 38, FixedPcdGet64 (PcdGicInterruptInterfaceBase),
          0x2C06F000, 0x2C04F000, 25, 0 /* GicRBase */),
    },
    EFI_ACPI_6_0_GIC_DISTRIBUTOR_INIT(0, FixedPcdGet64 (PcdGicDistributorBase), 0, 2),
    // Format: EFI_ACPI_6_0_GIC_MSI_FRAME_INIT(GicMsiFrameId, PhysicalBaseAddress, Flags, SPICount, SPIBase)
    EFI_ACPI_6_0_GIC_MSI_FRAME_INIT(0, ARM_JUNO_GIV2M_MSI_BASE, 0, ARM_JUNO_GIV2M_MSI_SPI_COUNT, ARM_JUNO_GIV2M_MSI_SPI_BASE)
  };
#endif

//
// Reference the table being generated to prevent the optimizer from removing the
// data structure from the executable
//
VOID* CONST ReferenceAcpiTable = &Madt;