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2024-03-22 a0752693d998599af469473b8dc239ef973a012f

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/** @file 
*  Debug Port Table 2 (DBG2) 
* 
*  Copyright (c) 2018, ARM Limited. All rights reserved. 
* 
*  SPDX-License-Identifier: BSD-2-Clause-Patent 
* 
**/ 
 
#include "SgiAcpiHeader.h" 
#include <Library/AcpiLib.h> 
#include <IndustryStandard/Acpi62.h> 
#include <IndustryStandard/DebugPort2Table.h> 
 
#define SGI_DBG2_NUM_DEBUG_PORTS           1 
#define SGI_DBG2_NUM_GAS                   1 
#define SGI_DBG2_NS_STR_LENGTH             12 
#define SGI_PL011_REGISTER_SPACE           0x1000 
 
#pragma pack(1) 
 
typedef struct { 
  EFI_ACPI_DBG2_DEBUG_DEVICE_INFORMATION_STRUCT Dbg2Device; 
  EFI_ACPI_6_2_GENERIC_ADDRESS_STRUCTURE        BaseAddressRegister; 
  UINT32                                        AddressSize; 
  UINT8                                         NameSpaceString[SGI_DBG2_NS_STR_LENGTH]; 
} DBG2_DEBUG_DEVICE_INFORMATION; 
 
typedef struct { 
  EFI_ACPI_DEBUG_PORT_2_DESCRIPTION_TABLE       Description; 
  DBG2_DEBUG_DEVICE_INFORMATION                 Dbg2DeviceInfo[SGI_DBG2_NUM_DEBUG_PORTS]; 
} DBG2_TABLE; 
 
#pragma pack() 
 
#define DBG2_DEBUG_PORT_DDI(NumReg, SubType, UartBase, UartAddrLen, UartNameStr) {                                  \ 
  {                                                                                                                 \ 
    EFI_ACPI_DBG2_DEBUG_DEVICE_INFORMATION_STRUCT_REVISION,         /* UINT8     Revision */                        \ 
    sizeof (DBG2_DEBUG_DEVICE_INFORMATION),                         /* UINT16    Length */                          \ 
    NumReg,                                                         /* UINT8     NumberofGenericAddressRegisters */ \ 
    SGI_DBG2_NS_STR_LENGTH,                                         /* UINT16    NameSpaceStringLength */           \ 
    OFFSET_OF (DBG2_DEBUG_DEVICE_INFORMATION, NameSpaceString),     /* UINT16    NameSpaceStringOffset */           \ 
    0,                                                              /* UINT16    OemDataLength */                   \ 
    0,                                                              /* UINT16    OemDataOffset */                   \ 
    EFI_ACPI_DBG2_PORT_TYPE_SERIAL,                                 /* UINT16    Port Type */                       \ 
    SubType,                                                        /* UINT16    Port Subtype */                    \ 
    { EFI_ACPI_RESERVED_BYTE, EFI_ACPI_RESERVED_BYTE },             /* UINT8     Reserved[2] */                     \ 
    OFFSET_OF (DBG2_DEBUG_DEVICE_INFORMATION, BaseAddressRegister), /* UINT16    BaseAddressRegister Offset */      \ 
    OFFSET_OF (DBG2_DEBUG_DEVICE_INFORMATION, AddressSize)          /* UINT16    AddressSize Offset */              \ 
  },                                                                                                                \ 
  ARM_GAS32 (UartBase),                            /* EFI_ACPI_6_2_GENERIC_ADDRESS_STRUCTURE BaseAddressRegister */ \ 
  UartAddrLen,                                     /* UINT32  AddressSize */                                        \ 
  UartNameStr                                      /* UINT8   NameSpaceString[MAX_DBG2_NAME_LEN] */                 \ 
} 
 
STATIC DBG2_TABLE Dbg2 = { 
  { 
    ARM_ACPI_HEADER ( 
      EFI_ACPI_6_2_DEBUG_PORT_2_TABLE_SIGNATURE, 
      DBG2_TABLE, 
      EFI_ACPI_DBG2_DEBUG_DEVICE_INFORMATION_STRUCT_REVISION 
    ), 
    OFFSET_OF (DBG2_TABLE, Dbg2DeviceInfo), 
    SGI_DBG2_NUM_DEBUG_PORTS 
  }, 
  { 
    // Kernel Debug Port 
    DBG2_DEBUG_PORT_DDI ( 
      SGI_DBG2_NUM_GAS, 
      EFI_ACPI_DBG2_PORT_SUBTYPE_SERIAL_ARM_PL011_UART, 
      FixedPcdGet64 (PcdSerialDbgRegisterBase), 
      SGI_PL011_REGISTER_SPACE, 
      "\\_SB.COM0" 
    ) 
  } 
}; 
 
// 
// Reference the table being generated to prevent the optimizer from removing 
// the data structure from the executable 
// 
VOID* CONST ReferenceAcpiTable = &Dbg2;