Port AcpiResetDxe from EDK to EDKII to enable reset function on DUET above legacy...

[mirror_edk2.git] / DuetPkg / AcpiResetDxe / Reset.c

/*++ @file\r
  Reset Architectural Protocol implementation.\r
\r
Copyright (c) 2006 - 2010, Intel Corporation                                                         \r
All rights reserved. This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
--*/\r
\r
#include "Reset.h"\r
\r
/**\r
  Use ACPI method to reset the sytem. If fail, use legacy 8042 method to reset the system\r
\r
  @param[in] AcpiDescription   Global variable to record reset info\r
\r
**/\r
VOID\r
SystemReset (\r
  IN EFI_ACPI_DESCRIPTION *AcpiDescription\r
  )\r
{\r
  UINT8   Dev;\r
  UINT8   Func;\r
  UINT8   Register;\r
\r
  if ((AcpiDescription->RESET_REG.Address != 0) &&\r
      ((AcpiDescription->RESET_REG.AddressSpaceId == EFI_ACPI_3_0_SYSTEM_IO) ||\r
       (AcpiDescription->RESET_REG.AddressSpaceId == EFI_ACPI_3_0_SYSTEM_MEMORY) ||\r
       (AcpiDescription->RESET_REG.AddressSpaceId == EFI_ACPI_3_0_PCI_CONFIGURATION_SPACE))) {\r
    //\r
    // Use ACPI System Reset\r
    //\r
    switch (AcpiDescription->RESET_REG.AddressSpaceId) {\r
    case EFI_ACPI_3_0_SYSTEM_IO:\r
      IoWrite8 ((UINTN) AcpiDescription->RESET_REG.Address, AcpiDescription->RESET_VALUE);\r
      break;\r
    case EFI_ACPI_3_0_SYSTEM_MEMORY:\r
      MmioWrite8 ((UINTN) AcpiDescription->RESET_REG.Address, AcpiDescription->RESET_VALUE);\r
      break;\r
    case EFI_ACPI_3_0_PCI_CONFIGURATION_SPACE:\r
      Register = (UINT8) AcpiDescription->RESET_REG.Address;\r
      Func     = (UINT8) (RShiftU64 (AcpiDescription->RESET_REG.Address, 16) & 0x7);\r
      Dev      = (UINT8) (RShiftU64 (AcpiDescription->RESET_REG.Address, 32) & 0x1F);\r
      PciWrite8 (PCI_LIB_ADDRESS (0, Dev, Func, Register), AcpiDescription->RESET_VALUE);\r
      break;\r
    }\r
  }\r
\r
  //\r
  // If system comes here, means ACPI reset fail, do Legacy System Reset, assume 8042 available\r
  //\r
  Register = 0xfe;\r
  IoWrite8 (0x64, Register);\r
\r
  //\r
  // System should reset now\r
  //\r
\r
  return ;\r
}\r
\r
/**\r
  Use ACPI method to shutdown the sytem\r
\r
  @param[in] AcpiDescription   Global variable to record reset info\r
\r
  @retval EFI_UNSUPPORTED      Shutdown fails\r
\r
**/\r
EFI_STATUS\r
SystemShutdown (\r
  IN EFI_ACPI_DESCRIPTION *AcpiDescription\r
  )\r
{\r
  UINT16  Value;\r
\r
  //\r
  // 1. Write SLP_TYPa\r
  //\r
  if ((AcpiDescription->PM1a_CNT_BLK.Address != 0) && (AcpiDescription->SLP_TYPa != 0)) {\r
    switch (AcpiDescription->PM1a_CNT_BLK.AddressSpaceId) {\r
    case EFI_ACPI_3_0_SYSTEM_IO:\r
      Value = IoRead16 ((UINTN) AcpiDescription->PM1a_CNT_BLK.Address);\r
      Value = (Value & 0xc3ff) | 0x2000 | (AcpiDescription->SLP_TYPa << 10);\r
      IoWrite16 ((UINTN) AcpiDescription->PM1a_CNT_BLK.Address, Value);\r
      break;\r
    case EFI_ACPI_3_0_SYSTEM_MEMORY:\r
      Value = MmioRead16 ((UINTN) AcpiDescription->PM1a_CNT_BLK.Address);\r
      Value = (Value & 0xc3ff) | 0x2000 | (AcpiDescription->SLP_TYPa << 10);\r
      MmioWrite16 ((UINTN) AcpiDescription->PM1a_CNT_BLK.Address, Value);\r
      break;\r
    }\r
  }\r
\r
  //\r
  // 2. Write SLP_TYPb\r
  //\r
  if ((AcpiDescription->PM1b_CNT_BLK.Address != 0) && (AcpiDescription->SLP_TYPb != 0)) {\r
    switch (AcpiDescription->PM1b_CNT_BLK.AddressSpaceId) {\r
    case EFI_ACPI_3_0_SYSTEM_IO:\r
      Value = IoRead16 ((UINTN) AcpiDescription->PM1b_CNT_BLK.Address);\r
      Value = (Value & 0xc3ff) | 0x2000 | (AcpiDescription->SLP_TYPb << 10);\r
      IoWrite16 ((UINTN) AcpiDescription->PM1b_CNT_BLK.Address, Value);\r
      break;\r
    case EFI_ACPI_3_0_SYSTEM_MEMORY:\r
      Value = MmioRead16 ((UINTN) AcpiDescription->PM1b_CNT_BLK.Address);\r
      Value = (Value & 0xc3ff) | 0x2000 | (AcpiDescription->SLP_TYPb << 10);\r
      MmioWrite16 ((UINTN) AcpiDescription->PM1b_CNT_BLK.Address, Value);\r
      break;\r
    }\r
  }\r
\r
  //\r
  // Done, if code runs here, mean not shutdown correctly\r
  //\r
  return EFI_UNSUPPORTED;\r
}\r
\r
/**\r
  Reset the system.\r
\r
  @param[in] ResetType       Warm or cold\r
  @param[in] ResetStatus     Possible cause of reset\r
  @param[in] DataSize        Size of ResetData in bytes\r
  @param[in] ResetData       Optional Unicode string\r
  @param[in] AcpiDescription Global variable to record reset info\r
\r
**/\r
VOID\r
EFIAPI\r
AcpiResetSystem (\r
  IN EFI_RESET_TYPE   ResetType,\r
  IN EFI_STATUS       ResetStatus,\r
  IN UINTN            DataSize,\r
  IN CHAR16           *ResetData, OPTIONAL\r
  IN EFI_ACPI_DESCRIPTION *AcpiDescription\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  switch (ResetType) {\r
  case EfiResetWarm:\r
  case EfiResetCold:\r
    SystemReset (AcpiDescription);\r
    break;\r
\r
  case EfiResetShutdown:\r
    Status = SystemShutdown (AcpiDescription);\r
    if (EFI_ERROR (Status)) {\r
      SystemReset (AcpiDescription);\r
    }\r
    break;\r
\r
  default:\r
    return ;\r
  }\r
\r
  //\r
  // Given we should have reset getting here would be bad\r
  //\r
  ASSERT (FALSE);\r
}\r
\r
BOOLEAN\r
GetAcpiDescription (\r
  IN EFI_ACPI_DESCRIPTION *AcpiDescription\r
  )\r
{\r
  EFI_HOB_GUID_TYPE       *HobAcpiDescription;\r
  //\r
  // Get AcpiDescription Hob\r
  //\r
  HobAcpiDescription = GetFirstGuidHob (&gEfiAcpiDescriptionGuid);\r
  if (HobAcpiDescription == NULL) {\r
    return FALSE;\r
  }\r
\r
  //\r
  // Copy it to Runtime Memory\r
  //\r
  ASSERT (sizeof (EFI_ACPI_DESCRIPTION) == GET_GUID_HOB_DATA_SIZE (HobAcpiDescription));\r
  CopyMem (AcpiDescription, GET_GUID_HOB_DATA (HobAcpiDescription), sizeof (EFI_ACPI_DESCRIPTION));\r
\r
  DEBUG ((EFI_D_ERROR, "ACPI Reset Base - %lx\n", AcpiDescription->RESET_REG.Address));\r
  DEBUG ((EFI_D_ERROR, "ACPI Reset Value - %02x\n", (UINTN)AcpiDescription->RESET_VALUE));\r
  DEBUG ((EFI_D_ERROR, "IAPC support - %x\n", (UINTN)(AcpiDescription->IAPC_BOOT_ARCH)));\r
  return TRUE;\r
}\r