UefiCpuPkg/CpuMpPei/CpuMpPei.h

   1 /** @file
   2   Definitions to install Multiple Processor PPI.
   3
   4   Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _CPU_MP_PEI_H_
  16 #define _CPU_MP_PEI_H_
  17
  18 #include <PiPei.h>
  19
  20
  21 #include <Library/BaseLib.h>
  22 #include <Library/HobLib.h>
  23 #include <Library/PeimEntryPoint.h>
  24 #include <Library/UefiCpuLib.h>
  25
  26 //
  27 // AP reset code information
  28 //
  29 typedef struct {
  30   UINT8             *RendezvousFunnelAddress;
  31   UINTN             PModeEntryOffset;
  32   UINTN             LModeEntryOffset;
  33   UINTN             RendezvousFunnelSize;
  34 } MP_ASSEMBLY_ADDRESS_MAP;
  35
  36 #pragma pack(1)
  37
  38 typedef union {
  39   struct {
  40     UINT32  LimitLow    : 16;
  41     UINT32  BaseLow     : 16;
  42     UINT32  BaseMid     : 8;
  43     UINT32  Type        : 4;
  44     UINT32  System      : 1;
  45     UINT32  Dpl         : 2;
  46     UINT32  Present     : 1;
  47     UINT32  LimitHigh   : 4;
  48     UINT32  Software    : 1;
  49     UINT32  Reserved    : 1;
  50     UINT32  DefaultSize : 1;
  51     UINT32  Granularity : 1;
  52     UINT32  BaseHigh    : 8;
  53   } Bits;
  54   UINT64  Uint64;
  55 } IA32_GDT;
  56
  57 //
  58 // MP CPU exchange information for AP reset code
  59 //
  60 typedef struct {
  61   UINTN                 Lock;
  62   UINTN                 StackStart;
  63   UINTN                 StackSize;
  64   UINTN                 CFunction;
  65   IA32_DESCRIPTOR       GdtrProfile;
  66   IA32_DESCRIPTOR       IdtrProfile;
  67   UINTN                 BufferStart;
  68   UINTN                 PmodeOffset;
  69   UINTN                 NumApsExecuting;
  70   UINTN                 LmodeOffset;
  71   UINTN                 Cr3;
  72 } MP_CPU_EXCHANGE_INFO;
  73
  74 #pragma pack()
  75
  76 /**
  77   Assembly code to get starting address and size of the rendezvous entry for APs.
  78   Information for fixing a jump instruction in the code is also returned.
  79
  80   @param AddressMap  Output buffer for address map information.
  81 **/
  82 VOID
  83 EFIAPI
  84 AsmGetAddressMap (
  85   OUT MP_ASSEMBLY_ADDRESS_MAP    *AddressMap
  86   );
  87
  88 /**
  89   Assembly code to load GDT table and update segment accordingly.
  90
  91   @param Gdtr   Pointer to GDT descriptor
  92 **/
  93 VOID
  94 EFIAPI
  95 AsmInitializeGdt (
  96   IN IA32_DESCRIPTOR  *Gdtr
  97   );
  98
  99
 100 #endif