UefiCpuPkg/CpuDxe/CpuDxe.h

   1 /** @file
   2   CPU DXE Module.
   3
   4   Copyright (c) 2008 - 2012, 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_DXE_H_
  16 #define _CPU_DXE_H_
  17
  18 #include <PiDxe.h>
  19
  20 #include <Protocol/Cpu.h>
  21
  22 #include <Library/UefiDriverEntryPoint.h>
  23 #include <Library/UefiBootServicesTableLib.h>
  24 #include <Library/DxeServicesTableLib.h>
  25 #include <Library/BaseLib.h>
  26 #include <Library/CpuLib.h>
  27 #include <Library/BaseMemoryLib.h>
  28 #include <Library/MemoryAllocationLib.h>
  29 #include <Library/DebugLib.h>
  30 #include <Library/MtrrLib.h>
  31 #include <Library/LocalApicLib.h>
  32 #include <Library/UefiCpuLib.h>
  33 #include <Guid/IdleLoopEvent.h>
  34
  35 //
  36 //
  37 //
  38 #define INTERRUPT_VECTOR_NUMBER   256
  39
  40 #define EFI_MEMORY_CACHETYPE_MASK     (EFI_MEMORY_UC  | \
  41                                        EFI_MEMORY_WC  | \
  42                                        EFI_MEMORY_WT  | \
  43                                        EFI_MEMORY_WB  | \
  44                                        EFI_MEMORY_UCE   \
  45                                        )
  46
  47
  48 /**
  49   Flush CPU data cache. If the instruction cache is fully coherent
  50   with all DMA operations then function can just return EFI_SUCCESS.
  51
  52   @param  This              Protocol instance structure
  53   @param  Start             Physical address to start flushing from.
  54   @param  Length            Number of bytes to flush. Round up to chipset
  55                             granularity.
  56   @param  FlushType         Specifies the type of flush operation to perform.
  57
  58   @retval EFI_SUCCESS       If cache was flushed
  59   @retval EFI_UNSUPPORTED   If flush type is not supported.
  60   @retval EFI_DEVICE_ERROR  If requested range could not be flushed.
  61
  62 **/
  63 EFI_STATUS
  64 EFIAPI
  65 CpuFlushCpuDataCache (
  66   IN EFI_CPU_ARCH_PROTOCOL     *This,
  67   IN EFI_PHYSICAL_ADDRESS      Start,
  68   IN UINT64                    Length,
  69   IN EFI_CPU_FLUSH_TYPE        FlushType
  70   );
  71
  72 /**
  73   Enables CPU interrupts.
  74
  75   @param  This              Protocol instance structure
  76
  77   @retval EFI_SUCCESS       If interrupts were enabled in the CPU
  78   @retval EFI_DEVICE_ERROR  If interrupts could not be enabled on the CPU.
  79
  80 **/
  81 EFI_STATUS
  82 EFIAPI
  83 CpuEnableInterrupt (
  84   IN EFI_CPU_ARCH_PROTOCOL     *This
  85   );
  86
  87 /**
  88   Disables CPU interrupts.
  89
  90   @param  This              Protocol instance structure
  91
  92   @retval EFI_SUCCESS       If interrupts were disabled in the CPU.
  93   @retval EFI_DEVICE_ERROR  If interrupts could not be disabled on the CPU.
  94
  95 **/
  96 EFI_STATUS
  97 EFIAPI
  98 CpuDisableInterrupt (
  99   IN EFI_CPU_ARCH_PROTOCOL     *This
 100   );
 101
 102 /**
 103   Return the state of interrupts.
 104
 105   @param  This                   Protocol instance structure
 106   @param  State                  Pointer to the CPU's current interrupt state
 107
 108   @retval EFI_SUCCESS            If interrupts were disabled in the CPU.
 109   @retval EFI_INVALID_PARAMETER  State is NULL.
 110
 111 **/
 112 EFI_STATUS
 113 EFIAPI
 114 CpuGetInterruptState (
 115   IN  EFI_CPU_ARCH_PROTOCOL     *This,
 116   OUT BOOLEAN                   *State
 117   );
 118
 119 /**
 120   Generates an INIT to the CPU.
 121
 122   @param  This              Protocol instance structure
 123   @param  InitType          Type of CPU INIT to perform
 124
 125   @retval EFI_SUCCESS       If CPU INIT occurred. This value should never be
 126                             seen.
 127   @retval EFI_DEVICE_ERROR  If CPU INIT failed.
 128   @retval EFI_UNSUPPORTED   Requested type of CPU INIT not supported.
 129
 130 **/
 131 EFI_STATUS
 132 EFIAPI
 133 CpuInit (
 134   IN EFI_CPU_ARCH_PROTOCOL     *This,
 135   IN EFI_CPU_INIT_TYPE         InitType
 136   );
 137
 138 /**
 139   Registers a function to be called from the CPU interrupt handler.
 140
 141   @param  This                   Protocol instance structure
 142   @param  InterruptType          Defines which interrupt to hook. IA-32
 143                                  valid range is 0x00 through 0xFF
 144   @param  InterruptHandler       A pointer to a function of type
 145                                  EFI_CPU_INTERRUPT_HANDLER that is called
 146                                  when a processor interrupt occurs.  A null
 147                                  pointer is an error condition.
 148
 149   @retval EFI_SUCCESS            If handler installed or uninstalled.
 150   @retval EFI_ALREADY_STARTED    InterruptHandler is not NULL, and a handler
 151                                  for InterruptType was previously installed.
 152   @retval EFI_INVALID_PARAMETER  InterruptHandler is NULL, and a handler for
 153                                  InterruptType was not previously installed.
 154   @retval EFI_UNSUPPORTED        The interrupt specified by InterruptType
 155                                  is not supported.
 156
 157 **/
 158 EFI_STATUS
 159 EFIAPI
 160 CpuRegisterInterruptHandler (
 161   IN EFI_CPU_ARCH_PROTOCOL         *This,
 162   IN EFI_EXCEPTION_TYPE            InterruptType,
 163   IN EFI_CPU_INTERRUPT_HANDLER     InterruptHandler
 164   );
 165
 166 /**
 167   Returns a timer value from one of the CPU's internal timers. There is no
 168   inherent time interval between ticks but is a function of the CPU frequency.
 169
 170   @param  This                - Protocol instance structure.
 171   @param  TimerIndex          - Specifies which CPU timer is requested.
 172   @param  TimerValue          - Pointer to the returned timer value.
 173   @param  TimerPeriod         - A pointer to the amount of time that passes
 174                                 in femtoseconds (10-15) for each increment
 175                                 of TimerValue. If TimerValue does not
 176                                 increment at a predictable rate, then 0 is
 177                                 returned.  The amount of time that has
 178                                 passed between two calls to GetTimerValue()
 179                                 can be calculated with the formula
 180                                 (TimerValue2 - TimerValue1) * TimerPeriod.
 181                                 This parameter is optional and may be NULL.
 182
 183   @retval EFI_SUCCESS           - If the CPU timer count was returned.
 184   @retval EFI_UNSUPPORTED       - If the CPU does not have any readable timers.
 185   @retval EFI_DEVICE_ERROR      - If an error occurred while reading the timer.
 186   @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue is NULL.
 187
 188 **/
 189 EFI_STATUS
 190 EFIAPI
 191 CpuGetTimerValue (
 192   IN  EFI_CPU_ARCH_PROTOCOL       *This,
 193   IN  UINT32                      TimerIndex,
 194   OUT UINT64                      *TimerValue,
 195   OUT UINT64                      *TimerPeriod OPTIONAL
 196   );
 197
 198 /**
 199   Set memory cacheability attributes for given range of memeory.
 200
 201   @param  This                   Protocol instance structure
 202   @param  BaseAddress            Specifies the start address of the
 203                                  memory range
 204   @param  Length                 Specifies the length of the memory range
 205   @param  Attributes             The memory cacheability for the memory range
 206
 207   @retval EFI_SUCCESS            If the cacheability of that memory range is
 208                                  set successfully
 209   @retval EFI_UNSUPPORTED        If the desired operation cannot be done
 210   @retval EFI_INVALID_PARAMETER  The input parameter is not correct,
 211                                  such as Length = 0
 212
 213 **/
 214 EFI_STATUS
 215 EFIAPI
 216 CpuSetMemoryAttributes (
 217   IN EFI_CPU_ARCH_PROTOCOL      *This,
 218   IN EFI_PHYSICAL_ADDRESS       BaseAddress,
 219   IN UINT64                     Length,
 220   IN UINT64                     Attributes
 221   );
 222
 223 /**
 224   Label of base address of IDT vector 0.
 225
 226   This is just a label of base address of IDT vector 0.
 227
 228 **/
 229 VOID
 230 EFIAPI
 231 AsmIdtVector00 (
 232   VOID
 233   );
 234
 235 /**
 236   Initializes the pointer to the external interrupt vector table.
 237
 238   @param  VectorTable  Address of the external interrupt vector table.
 239
 240 **/
 241 VOID
 242 EFIAPI
 243 InitializeExternalVectorTablePtr (
 244   EFI_CPU_INTERRUPT_HANDLER  *VectorTable
 245   );
 246
 247 /**
 248   Initialize Global Descriptor Table.
 249
 250 **/
 251 VOID
 252 InitGlobalDescriptorTable (
 253   VOID
 254   );
 255
 256 /**
 257   Sets the code selector (CS).
 258
 259   @param  Selector  Value of code selector.
 260
 261 **/
 262 VOID
 263 EFIAPI
 264 SetCodeSelector (
 265   UINT16 Selector
 266   );
 267
 268 /**
 269   Sets the data selector (DS).
 270
 271   @param  Selector  Value of data selector.
 272
 273 **/
 274 VOID
 275 EFIAPI
 276 SetDataSelectors (
 277   UINT16 Selector
 278   );
 279
 280 /**
 281   Restore original Interrupt Descriptor Table Handler Address.
 282
 283   @param Index        The Index of the interrupt descriptor table handle.
 284
 285 **/
 286 VOID
 287 RestoreInterruptDescriptorTableHandlerAddress (
 288   IN UINTN       Index
 289   );
 290
 291 #endif
 292