[mirror_edk2.git] / MdeModulePkg / Include / Library / GenericBdsLib.h

/** @file\r
  Generic BDS library definition, include the data structure and function.\r
\r
Copyright (c) 2004 - 2008, Intel Corporation. <BR>\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
#ifndef _GENERIC_BDS_LIB_H_\r
#define _GENERIC_BDS_LIB_H_\r
\r
#include <Protocol/HiiDatabase.h>\r
#include <IndustryStandard/PeImage.h>\r
\r
\r
extern EFI_HANDLE mBdsImageHandle;\r
\r
//\r
// Constants which are variable names used to access variables\r
//\r
#define VAR_LEGACY_DEV_ORDER L"LegacyDevOrder"\r
\r
//\r
// Data structures and defines\r
//\r
#define FRONT_PAGE_QUESTION_ID  0x0000\r
#define FRONT_PAGE_DATA_WIDTH   0x01\r
\r
//\r
// ConnectType\r
//\r
#define CONSOLE_OUT 0x00000001\r
#define STD_ERROR   0x00000002\r
#define CONSOLE_IN  0x00000004\r
#define CONSOLE_ALL (CONSOLE_OUT | CONSOLE_IN | STD_ERROR)\r
\r
//\r
// Load Option Attributes defined in EFI Specification\r
//\r
#define LOAD_OPTION_ACTIVE              0x00000001\r
#define LOAD_OPTION_FORCE_RECONNECT     0x00000002\r
\r
#define LOAD_OPTION_HIDDEN              0x00000008\r
#define LOAD_OPTION_CATEGORY            0x00001F00\r
\r
#define LOAD_OPTION_CATEGORY_BOOT       0x00000000\r
#define LOAD_OPTION_CATEGORY_APP        0x00000100\r
\r
#define EFI_BOOT_OPTION_SUPPORT_KEY     0x00000001\r
#define EFI_BOOT_OPTION_SUPPORT_APP     0x00000002\r
\r
#define IS_LOAD_OPTION_TYPE(_c, _Mask)  (BOOLEAN) (((_c) & (_Mask)) != 0)\r
\r
//\r
// Define Maxmim characters that will be accepted\r
//\r
#define MAX_CHAR            480\r
#define MAX_CHAR_SIZE       (MAX_CHAR * 2)\r
\r
#define MIN_ALIGNMENT_SIZE  4\r
#define ALIGN_SIZE(a)       ((a % MIN_ALIGNMENT_SIZE) ? MIN_ALIGNMENT_SIZE - (a % MIN_ALIGNMENT_SIZE) : 0)\r
\r
//\r
// Define maximum characters for boot option variable "BootXXXX"\r
//\r
#define BOOT_OPTION_MAX_CHAR 10\r
\r
//\r
// This data structure is the part of BDS_CONNECT_ENTRY that we can hard code.\r
//\r
#define BDS_LOAD_OPTION_SIGNATURE EFI_SIGNATURE_32 ('B', 'd', 'C', 'O')\r
\r
typedef struct {\r
\r
  UINTN                     Signature;\r
  LIST_ENTRY                Link;\r
\r
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
\r
  CHAR16                    *OptionName;\r
  UINTN                     OptionNumber;\r
  UINT16                    BootCurrent;\r
  UINT32                    Attribute;\r
  CHAR16                    *Description;\r
  VOID                      *LoadOptions;\r
  UINT32                    LoadOptionsSize;\r
  CHAR16                    *StatusString;\r
\r
} BDS_COMMON_OPTION;\r
\r
typedef struct {\r
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  UINTN                     ConnectType;\r
} BDS_CONSOLE_CONNECT_ENTRY;\r
\r
//\r
// Lib Functions\r
//\r
\r
//\r
// Bds boot related lib functions\r
//\r
/**\r
  Boot from the UEFI spec defined "BootNext" variable.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibBootNext (\r
  VOID\r
  );\r
\r
/**\r
  Process the boot option follow the UEFI specification and\r
  special treat the legacy boot option with BBS_DEVICE_PATH.\r
\r
  @param  Option                 The boot option need to be processed\r
  @param  DevicePath             The device path which describe where to load the\r
                                 boot image or the legcy BBS device path to boot\r
                                 the legacy OS\r
  @param  ExitDataSize           The size of exit data.\r
  @param  ExitData               Data returned when Boot image failed.\r
\r
  @retval EFI_SUCCESS            Boot from the input boot option successfully.\r
  @retval EFI_NOT_FOUND          If the Device Path is not found in the system\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibBootViaBootOption (\r
  IN  BDS_COMMON_OPTION             * Option,\r
  IN  EFI_DEVICE_PATH_PROTOCOL      * DevicePath,\r
  OUT UINTN                         *ExitDataSize,\r
  OUT CHAR16                        **ExitData OPTIONAL\r
  );\r
\r
\r
/**\r
  This function will enumerate all possible boot device in the system,\r
  it will only excute once of every boot.\r
\r
  @param  BdsBootOptionList      The header of the link list which indexed all\r
                                 current boot options\r
\r
  @retval EFI_SUCCESS            Finished all the boot device enumerate and create\r
                                 the boot option base on that boot device\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibEnumerateAllBootOption (\r
  IN OUT LIST_ENTRY          *BdsBootOptionList\r
  );\r
\r
/**\r
  Build the boot option with the handle parsed in\r
\r
  @param  Handle                 The handle which present the device path to create\r
                                 boot option\r
  @param  BdsBootOptionList      The header of the link list which indexed all\r
                                 current boot options\r
  @param  String                 The description of the boot option.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibBuildOptionFromHandle (\r
  IN  EFI_HANDLE                 Handle,\r
  IN  LIST_ENTRY                 *BdsBootOptionList,\r
  IN  CHAR16                     *String\r
  );\r
\r
\r
/**\r
  Build the on flash shell boot option with the handle parsed in.\r
\r
  @param  Handle                 The handle which present the device path to create\r
                                 on flash shell boot option\r
  @param  BdsBootOptionList      The header of the link list which indexed all\r
                                 current boot options\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibBuildOptionFromShell (\r
  IN EFI_HANDLE                  Handle,\r
  IN OUT LIST_ENTRY              *BdsBootOptionList\r
  );\r
\r
//\r
// Bds misc lib functions\r
//\r
/**\r
  Return the default value for system Timeout variable.\r
\r
  @return Timeout value.\r
\r
**/\r
UINT16\r
EFIAPI\r
BdsLibGetTimeout (\r
  VOID\r
  );\r
\r
/**\r
  Get boot mode by looking up configuration table and parsing HOB list\r
\r
  @param  BootMode              Boot mode from PEI handoff HOB.\r
\r
  @retval EFI_SUCCESS           Successfully get boot mode\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibGetBootMode (\r
  OUT EFI_BOOT_MODE       *BootMode\r
  );\r
\r
\r
/**\r
  The function will go through the driver optoin link list, load and start\r
  every driver the driver optoin device path point to.\r
\r
  @param  BdsDriverLists        The header of the current driver option link list\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibLoadDrivers (\r
  IN LIST_ENTRY                   *BdsDriverLists\r
  );\r
\r
\r
/**\r
  Process BootOrder, or DriverOrder variables, by calling\r
  BdsLibVariableToOption () for each UINT16 in the variables.\r
\r
  @param  BdsCommonOptionList   The header of the option list base on variable\r
                                VariableName\r
  @param  VariableName          EFI Variable name indicate the BootOrder or\r
                                DriverOrder\r
\r
  @retval EFI_SUCCESS           Success create the boot option or driver option\r
                                list\r
  @retval EFI_OUT_OF_RESOURCES  Failed to get the boot option or driver option list\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibBuildOptionFromVar (\r
  IN  LIST_ENTRY                      *BdsCommonOptionList,\r
  IN  CHAR16                          *VariableName\r
  );\r
\r
/**\r
  Read the EFI variable (VendorGuid/Name) and return a dynamically allocated\r
  buffer, and the size of the buffer. If failure return NULL.\r
\r
  @param  Name                  String part of EFI variable name\r
  @param  VendorGuid            GUID part of EFI variable name\r
  @param  VariableSize          Returns the size of the EFI variable that was read\r
\r
  @return                       Dynamically allocated memory that contains a copy of the EFI variable\r
                                Caller is responsible freeing the buffer.\r
  @retval NULL                  Variable was not read\r
\r
**/\r
VOID *\r
EFIAPI\r
BdsLibGetVariableAndSize (\r
  IN  CHAR16              *Name,\r
  IN  EFI_GUID            *VendorGuid,\r
  OUT UINTN               *VariableSize\r
  );\r
\r
\r
/**\r
  This function prints a series of strings.\r
\r
  @param  ConOut                Pointer to EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL\r
  @param  ...                   A variable argument list containing series of\r
                                strings, the last string must be NULL.\r
\r
  @retval EFI_SUCCESS           Success print out the string using ConOut.\r
  @retval EFI_STATUS            Return the status of the ConOut->OutputString ().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibOutputStrings (\r
  IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL   *ConOut,\r
  ...\r
  );\r
\r
/**\r
  Build the boot#### or driver#### option from the VariableName, the\r
  build boot#### or driver#### will also be linked to BdsCommonOptionList.\r
\r
  @param  BdsCommonOptionList   The header of the boot#### or driver#### option\r
                                link list\r
  @param  VariableName          EFI Variable name indicate if it is boot#### or\r
                                driver####\r
\r
  @retval BDS_COMMON_OPTION     Get the option just been created\r
  @retval NULL                  Failed to get the new option\r
\r
**/\r
BDS_COMMON_OPTION *\r
EFIAPI\r
BdsLibVariableToOption (\r
  IN OUT LIST_ENTRY                   *BdsCommonOptionList,\r
  IN  CHAR16                          *VariableName\r
  );\r
\r
/**\r
  This function will register the new boot#### or driver#### option base on\r
  the VariableName. The new registered boot#### or driver#### will be linked\r
  to BdsOptionList and also update to the VariableName. After the boot#### or\r
  driver#### updated, the BootOrder or DriverOrder will also be updated.\r
\r
  @param  BdsOptionList         The header of the boot#### or driver#### link list\r
  @param  DevicePath            The device path which the boot#### or driver####\r
                                option present\r
  @param  String                The description of the boot#### or driver####\r
  @param  VariableName          Indicate if the boot#### or driver#### option\r
\r
  @retval EFI_SUCCESS           The boot#### or driver#### have been success\r
                                registered\r
  @retval EFI_STATUS            Return the status of gRT->SetVariable ().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibRegisterNewOption (\r
  IN  LIST_ENTRY                     *BdsOptionList,\r
  IN  EFI_DEVICE_PATH_PROTOCOL       *DevicePath,\r
  IN  CHAR16                         *String,\r
  IN  CHAR16                         *VariableName\r
  );\r
\r
//\r
// Bds connect or disconnect driver lib funcion\r
//\r
/**\r
  Connects all drivers to all controllers.\r
  This function make sure all the current system driver will manage\r
  the correspoinding controllers if have. And at the same time, make\r
  sure all the system controllers have driver to manage it if have.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibConnectAllDriversToAllControllers (\r
  VOID\r
  );\r
\r
/**\r
  This function will connect all the system driver to controller\r
  first, and then special connect the default console, this make\r
  sure all the system controller avialbe and the platform default\r
  console connected.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibConnectAll (\r
  VOID\r
  );\r
\r
/**\r
  This function will create all handles associate with every device\r
  path node. If the handle associate with one device path node can not\r
  be created success, then still give one chance to do the dispatch,\r
  which load the missing drivers if possible.\r
\r
  @param  DevicePathToConnect   The device path which will be connected, it can be\r
                                a multi-instance device path\r
\r
  @retval EFI_SUCCESS           All handles associate with every device path  node\r
                                have been created\r
  @retval EFI_OUT_OF_RESOURCES  There is no resource to create new handles\r
  @retval EFI_NOT_FOUND         Create the handle associate with one device  path\r
                                node failed\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectDevicePath (\r
  IN EFI_DEVICE_PATH_PROTOCOL  *DevicePathToConnect\r
  );\r
\r
/**\r
  This function will connect all current system handles recursively. The\r
  connection will finish until every handle's child handle created if it have.\r
\r
  @retval EFI_SUCCESS           All handles and it's child handle have been\r
                                connected\r
  @retval EFI_STATUS            Return the status of gBS->LocateHandleBuffer().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectAllEfi (\r
  VOID\r
  );\r
\r
\r
/**\r
  This function will disconnect all current system handles. The disconnection\r
  will finish until every handle have been disconnected.\r
\r
  @retval EFI_SUCCESS           All handles have been disconnected\r
  @retval EFI_STATUS            Return the status of gBS->LocateHandleBuffer().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibDisconnectAllEfi (\r
  VOID\r
  );\r
\r
//\r
// Bds console related lib functions\r
//\r
/**\r
  This function will search every simpletxt devive in current system,\r
  and make every simpletxt device as pertantial console device.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibConnectAllConsoles (\r
  VOID\r
  );\r
\r
\r
/**\r
  This function will connect console device base on the console\r
  device variable ConIn, ConOut and ErrOut.\r
\r
  @retval EFI_SUCCESS              At least one of the ConIn and ConOut device have\r
                                   been connected success.\r
  @retval EFI_STATUS               Return the status of BdsLibConnectConsoleVariable ().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectAllDefaultConsoles (\r
  VOID\r
  );\r
\r
/**\r
  This function update console variable based on ConVarName, it can\r
  add or remove one specific console device path from the variable\r
\r
  @param  ConVarName               Console related variable name, ConIn, ConOut,\r
                                   ErrOut.\r
  @param  CustomizedConDevicePath  The console device path which will be added to\r
                                   the console variable ConVarName, this parameter\r
                                   can not be multi-instance.\r
  @param  ExclusiveDevicePath      The console device path which will be removed\r
                                   from the console variable ConVarName, this\r
                                   parameter can not be multi-instance.\r
\r
  @retval EFI_UNSUPPORTED          The added device path is same to the removed one.\r
  @retval EFI_SUCCESS              Success add or remove the device path from  the\r
                                   console variable.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibUpdateConsoleVariable (\r
  IN  CHAR16                    *ConVarName,\r
  IN  EFI_DEVICE_PATH_PROTOCOL  *CustomizedConDevicePath,\r
  IN  EFI_DEVICE_PATH_PROTOCOL  *ExclusiveDevicePath\r
  );\r
\r
/**\r
  Connect the console device base on the variable ConVarName, if\r
  device path of the ConVarName is multi-instance device path, if\r
  anyone of the instances is connected success, then this function\r
  will return success.\r
\r
  @param  ConVarName               Console related variable name, ConIn, ConOut,\r
                                   ErrOut.\r
\r
  @retval EFI_NOT_FOUND            There is not any console devices connected\r
                                   success\r
  @retval EFI_SUCCESS              Success connect any one instance of the console\r
                                   device path base on the variable ConVarName.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectConsoleVariable (\r
  IN  CHAR16                 *ConVarName\r
  );\r
\r
//\r
// Bds device path related lib functions\r
//\r
/**\r
  Function unpacks a device path data structure so that all the nodes\r
  of a device path are naturally aligned.\r
\r
  @param  DevPath  A pointer to a device path data structure\r
\r
  @return If the memory for the device path is successfully allocated, then a\r
          pointer to the new device path is returned.  Otherwise, NULL is returned.\r
\r
**/\r
EFI_DEVICE_PATH_PROTOCOL *\r
EFIAPI\r
BdsLibUnpackDevicePath (\r
  IN EFI_DEVICE_PATH_PROTOCOL  *DevPath\r
  );\r
\r
/**\r
  Delete the instance in Multi which matches partly with Single instance\r
\r
  @param  Multi                 A pointer to a multi-instance device path data\r
                                structure.\r
  @param  Single                A pointer to a single-instance device path data\r
                                structure.\r
\r
  @return This function will remove the device path instances in Multi which partly\r
          match with the Single, and return the result device path. If there is no\r
          remaining device path as a result, this function will return NULL.\r
\r
**/\r
EFI_DEVICE_PATH_PROTOCOL *\r
EFIAPI\r
BdsLibDelPartMatchInstance (\r
  IN     EFI_DEVICE_PATH_PROTOCOL  *Multi,\r
  IN     EFI_DEVICE_PATH_PROTOCOL  *Single\r
  );\r
\r
/**\r
  Function compares a device path data structure to that of all the nodes of a\r
  second device path instance.\r
\r
  @param  Multi                 A pointer to a multi-instance device path data\r
                                structure.\r
  @param  Single                A pointer to a single-instance device path data\r
                                structure.\r
\r
  @retval TRUE                  If the Single device path is contained within Multi device path.\r
  @retval FALSE                 The Single device path is not match within Multi device path.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
BdsLibMatchDevicePaths (\r
  IN  EFI_DEVICE_PATH_PROTOCOL  *Multi,\r
  IN  EFI_DEVICE_PATH_PROTOCOL  *Single\r
  );\r
\r
/**\r
  This function converts an input device structure to a Unicode string.\r
\r
  @param DevPath                  A pointer to the device path structure.\r
\r
  @return A new allocated Unicode string that represents the device path.\r
\r
**/\r
CHAR16 *\r
EFIAPI\r
DevicePathToStr (\r
  IN EFI_DEVICE_PATH_PROTOCOL     *DevPath\r
  );\r
\r
\r
//\r
// Internal definitions\r
//\r
typedef struct {\r
  CHAR16  *str;\r
  UINTN   len;\r
  UINTN   maxlen;\r
} POOL_PRINT;\r
\r
typedef struct {\r
  UINT8 Type;\r
  UINT8 SubType;\r
  VOID (*Function) (POOL_PRINT *, VOID *);\r
} DEVICE_PATH_STRING_TABLE;\r
\r
extern EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid;\r
\r
typedef struct {\r
  EFI_DEVICE_PATH_PROTOCOL  Header;\r
  EFI_GUID                  Guid;\r
  UINT8                     VendorDefinedData[1];\r
} VENDOR_DEVICE_PATH_WITH_DATA;\r
\r
\r
extern EFI_GUID mEfiDevicePathMessagingSASGuid;\r
\r
typedef struct {\r
  EFI_DEVICE_PATH_PROTOCOL  Header;\r
  UINT16                    NetworkProtocol;\r
  UINT16                    LoginOption;\r
  UINT64                    Lun;\r
  UINT16                    TargetPortalGroupTag;\r
  CHAR16                    iSCSITargetName[1];\r
} ISCSI_DEVICE_PATH_WITH_NAME;\r
\r
\r
//\r
// Notes: EFI 64 shadow all option rom\r
//\r
#if defined (MDE_CPU_IPF)\r
#define EFI64_SHADOW_ALL_LEGACY_ROM() ShadowAllOptionRom ();\r
#else\r
#define EFI64_SHADOW_ALL_LEGACY_ROM()\r
#endif\r
\r
/**\r
  Shadow all Legacy OptionRom. \r
\r
**/\r
VOID\r
EFIAPI\r
ShadowAllOptionRom (\r
  VOID\r
  );\r
\r
//\r
// BBS support macros and functions\r
//\r
\r
#if defined(MDE_CPU_IA32) || defined(MDE_CPU_X64)\r
#define REFRESH_LEGACY_BOOT_OPTIONS \\r
        BdsDeleteAllInvalidLegacyBootOptions ();\\r
        BdsAddNonExistingLegacyBootOptions (); \\r
        BdsUpdateLegacyDevOrder ()\r
#else\r
#define REFRESH_LEGACY_BOOT_OPTIONS\r
#endif\r
\r
/**\r
  Delete all the invalid legacy boot options.\r
\r
  @retval EFI_SUCCESS             All invalide legacy boot options are deleted.\r
  @retval EFI_OUT_OF_RESOURCES    Fail to allocate necessary memory.\r
  @retval EFI_NOT_FOUND           Fail to retrive variable of boot order.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsDeleteAllInvalidLegacyBootOptions (\r
  VOID\r
  );\r
\r
/**\r
\r
  Add the legacy boot options from BBS table if they do not exist.\r
\r
  @retval EFI_SUCCESS       The boot options are added successfully \r
                            or they are already in boot options.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsAddNonExistingLegacyBootOptions (\r
  VOID\r
  );\r
\r
/**\r
\r
  Add the legacy boot devices from BBS table into \r
  the legacy device boot order.\r
\r
  @retval EFI_SUCCESS       The boot devices are added successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsUpdateLegacyDevOrder (\r
  VOID\r
  );\r
\r
/**\r
\r
  Set the boot priority for BBS entries based on boot option entry and boot order.\r
\r
  @param  Entry             The boot option is to be checked for refresh BBS table.\r
  \r
  @retval EFI_SUCCESS       The boot priority for BBS entries is refreshed successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsRefreshBbsTableForBoot (\r
  IN BDS_COMMON_OPTION        *Entry\r
  );\r
\r
/**\r
\r
  Delete boot option specified by OptionNumber and adjust the boot order.\r
\r
  @param  OptionNumber      The boot option to be deleted.\r
  @param  BootOrder         Boot order list to be adjusted by remove this boot option.\r
  @param  BootOrderSize     The size of Boot order list will be modified.\r
  \r
  @retval EFI_SUCCESS       The boot option is deleted successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsDeleteBootOption (\r
  IN UINTN                       OptionNumber,\r
  IN OUT UINT16                  *BootOrder,\r
  IN OUT UINTN                   *BootOrderSize\r
  );\r
\r
//\r
//The interface functions relate with Setup Browser Reset Reminder feature\r
//\r
/**\r
  Enable the setup browser reset reminder feature.\r
  This routine is used in platform tip. If the platform policy need the feature, use the routine to enable it.\r
\r
**/\r
VOID\r
EFIAPI\r
EnableResetReminderFeature (\r
  VOID\r
  );\r
\r
/**\r
  Disable the setup browser reset reminder feature.\r
  This routine is used in platform tip. If the platform policy do not want the feature, use the routine to disable it.\r
\r
**/\r
VOID\r
EFIAPI\r
DisableResetReminderFeature (\r
  VOID\r
  );\r
\r
/**\r
  Record the info that  a reset is required.\r
  A  module boolean variable is used to record whether a reset is required.\r
\r
**/\r
VOID\r
EFIAPI\r
EnableResetRequired (\r
  VOID\r
  );\r
\r
\r
/**\r
  Record the info that  no reset is required.\r
  A  module boolean variable is used to record whether a reset is required.\r
\r
**/\r
VOID\r
EFIAPI\r
DisableResetRequired (\r
  VOID\r
  );\r
\r
/**\r
  Check whether platform policy enable the reset reminder feature. The default is enabled.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
IsResetReminderFeatureEnable (\r
  VOID\r
  );\r
\r
/**\r
  Check if  user changed any option setting which needs a system reset to be effective.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
IsResetRequired (\r
  VOID\r
  );\r
\r
/**\r
  Check whether a reset is needed, and finish the reset reminder feature.\r
  If a reset is needed, Popup a menu to notice user, and finish the feature\r
  according to the user selection.\r
\r
**/\r
VOID\r
EFIAPI\r
SetupResetReminder (\r
  VOID\r
  );\r
\r
\r
/**\r
  Get the headers (dos, image, optional header) from an image\r
\r
  @param  Device                SimpleFileSystem device handle\r
  @param  FileName              File name for the image\r
  @param  DosHeader             Pointer to dos header\r
  @param  Hdr                   The buffer in which to return the PE32, PE32+, or TE header.\r
\r
  @retval EFI_SUCCESS           Successfully get the machine type.\r
  @retval EFI_NOT_FOUND         The file is not found.\r
  @retval EFI_LOAD_ERROR        File is not a valid image file.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibGetImageHeader (\r
  IN  EFI_HANDLE                  Device,\r
  IN  CHAR16                      *FileName,\r
  OUT EFI_IMAGE_DOS_HEADER        *DosHeader,\r
  OUT EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION   Hdr\r
  );\r
\r
//\r
// Define the boot type which to classify the boot option type\r
// Different boot option type could have different boot behavior\r
// Use their device path node (Type + SubType) as type value\r
// The boot type here can be added according to requirement\r
//\r
//\r
// ACPI boot type. For ACPI device, cannot use sub-type to distinguish device, so hardcode their value\r
//\r
#define  BDS_EFI_ACPI_FLOPPY_BOOT         0x0201\r
//\r
// Message boot type\r
// If a device path of boot option only point to a message node, the boot option is message boot type\r
//\r
#define  BDS_EFI_MESSAGE_ATAPI_BOOT       0x0301 // Type 03; Sub-Type 01\r
#define  BDS_EFI_MESSAGE_SCSI_BOOT        0x0302 // Type 03; Sub-Type 02\r
#define  BDS_EFI_MESSAGE_USB_DEVICE_BOOT  0x0305 // Type 03; Sub-Type 05\r
#define  BDS_EFI_MESSAGE_MISC_BOOT        0x03FF\r
//\r
// Media boot type\r
// If a device path of boot option contain a media node, the boot option is media boot type\r
//\r
#define  BDS_EFI_MEDIA_HD_BOOT            0x0401 // Type 04; Sub-Type 01\r
#define  BDS_EFI_MEDIA_CDROM_BOOT         0x0402 // Type 04; Sub-Type 02\r
//\r
// BBS boot type\r
// If a device path of boot option contain a BBS node, the boot option is BBS boot type\r
//\r
#define  BDS_LEGACY_BBS_BOOT              0x0501 //  Type 05; Sub-Type 01\r
\r
#define  BDS_EFI_UNSUPPORT                0xFFFF\r
\r
//\r
// USB host controller Programming Interface.\r
//\r
#define  PCI_CLASSC_PI_UHCI               0x00\r
#define  PCI_CLASSC_PI_EHCI               0x20\r
\r
/**\r
  Check whether there is a instance in BlockIoDevicePath, which contain multi device path\r
  instances, has the same partition node with HardDriveDevicePath device path\r
\r
  @param  BlockIoDevicePath      Multi device path instances which need to check\r
  @param  HardDriveDevicePath    A device path which starts with a hard drive media\r
                                 device path.\r
\r
  @retval TRUE                   There is a matched device path instance.\r
  @retval FALSE                  There is no matched device path instance.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
MatchPartitionDevicePathNode (\r
  IN  EFI_DEVICE_PATH_PROTOCOL   *BlockIoDevicePath,\r
  IN  HARDDRIVE_DEVICE_PATH      *HardDriveDevicePath\r
  );\r
\r
\r
/**\r
  Expand a device path that starts with a hard drive media device path node to be a\r
  full device path that includes the full hardware path to the device. We need\r
  to do this so it can be booted. As an optimizaiton the front match (the part point\r
  to the partition node. E.g. ACPI() /PCI()/ATA()/Partition() ) is saved in a variable\r
  so a connect all is not required on every boot. All successful history device path\r
  which point to partition node (the front part) will be saved.\r
\r
  @param  HardDriveDevicePath    EFI Device Path to boot, if it starts with a hard\r
                                 drive media device path.\r
  @return A Pointer to the full device path or NULL if a valid Hard Drive devic path\r
          cannot be found.\r
\r
**/\r
EFI_DEVICE_PATH_PROTOCOL *\r
EFIAPI\r
BdsExpandPartitionPartialDevicePathToFull (\r
  IN  HARDDRIVE_DEVICE_PATH      *HardDriveDevicePath\r
  );\r
  \r
/**\r
  Return the bootable media handle.\r
  First, check the device is connected\r
  Second, check whether the device path point to a device which support SimpleFileSystemProtocol,\r
  Third, detect the the default boot file in the Media, and return the removable Media handle.\r
\r
  @param  DevicePath             Device Path to a  bootable device\r
\r
  @retval NULL                   The media on the DevicePath is not bootable\r
\r
**/\r
EFI_HANDLE\r
EFIAPI\r
BdsLibGetBootableHandle (\r
  IN  EFI_DEVICE_PATH_PROTOCOL      *DevicePath\r
  );\r
  \r
\r
/**\r
  Check whether the Device path in a boot option point to a valide bootable device,\r
  And if CheckMedia is true, check the device is ready to boot now.\r
\r
  @param  DevPath     the Device path in a boot option\r
  @param  CheckMedia  if true, check the device is ready to boot now.\r
\r
  @retval TRUE        the Device path  is valide\r
  @retval FALSE       the Device path  is invalide .\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
BdsLibIsValidEFIBootOptDevicePath (\r
  IN EFI_DEVICE_PATH_PROTOCOL     *DevPath,\r
  IN BOOLEAN                      CheckMedia\r
  );\r
  \r
/**\r
  For a bootable Device path, return its boot type.\r
\r
  @param  DevicePath                      The bootable device Path to check\r
\r
  @retval BDS_EFI_MEDIA_HD_BOOT           If the device path contains any media deviec path node, it is media boot type\r
                                          For the floppy node, handle it as media node\r
  @retval BDS_EFI_MEDIA_CDROM_BOOT        If the device path contains any media deviec path node, it is media boot type\r
                                          For the floppy node, handle it as media node\r
  @retval BDS_EFI_ACPI_FLOPPY_BOOT        If the device path contains any media deviec path node, it is media boot type\r
                                          For the floppy node, handle it as media node\r
  @retval BDS_EFI_MESSAGE_ATAPI_BOOT      If the device path not contains any media deviec path node,  and\r
                                          its last device path node point to a message device path node, it is\r
  \r
  @retval BDS_EFI_MESSAGE_SCSI_BOOT       If the device path not contains any media deviec path node,  and\r
                                          its last device path node point to a message device path node, it is\r
  @retval BDS_EFI_MESSAGE_USB_DEVICE_BOOT If the device path not contains any media deviec path node,  and\r
                                          its last device path node point to a message device path node, it is\r
  @retval BDS_EFI_MESSAGE_MISC_BOOT       If the device path not contains any media deviec path node,  and\r
                                          its last device path node point to a message device path node, it is\r
  @retval BDS_LEGACY_BBS_BOOT             Legacy boot type\r
  @retval BDS_EFI_UNSUPPORT               An EFI Removable BlockIO device path not point to a media and message devie,   \r
\r
**/\r
UINT32\r
EFIAPI\r
BdsGetBootTypeFromDevicePath (\r
  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath\r
  );\r
\r
\r
/**\r
  This routine register a function to adjust the different type memory page number\r
  just before booting and save the updated info into the variable for next boot to use.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibSaveMemoryTypeInformation (\r
  VOID\r
  );\r
  \r
\r
/**\r
  According to a file guild, check a Fv file device path is valid. If it is invalid,\r
  try to return the valid device path.\r
  FV address maybe changes for memory layout adjust from time to time, use this funciton\r
  could promise the Fv file device path is right.\r
\r
  @param  DevicePath             on input, the Fv file device path need to check on\r
                                 output, the updated valid Fv file device path\r
  @param  FileGuid               the Fv file guild\r
\r
  @retval EFI_INVALID_PARAMETER  the input DevicePath or FileGuid is invalid\r
                                 parameter\r
  @retval EFI_UNSUPPORTED        the input DevicePath does not contain Fv file\r
                                 guild at all\r
  @retval EFI_ALREADY_STARTED    the input DevicePath has pointed to Fv file, it is\r
                                 valid\r
  @retval EFI_SUCCESS            has successfully updated the invalid DevicePath,\r
                                 and return the updated device path in DevicePath\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibUpdateFvFileDevicePath (\r
  IN  OUT EFI_DEVICE_PATH_PROTOCOL      ** DevicePath,\r
  IN  EFI_GUID                          *FileGuid\r
  );\r
\r
\r
/**\r
  Connect the specific Usb device which match the short form device path,\r
  and whose bus is determined by Host Controller (Uhci or Ehci)\r
\r
  @param  HostControllerPI      Uhci (0x00) or Ehci (0x20) or Both uhci and ehci\r
                                (0xFF)\r
  @param  RemainingDevicePath   a short-form device path that starts with the first\r
                                element being a USB WWID or a USB Class device\r
                                path\r
\r
  @retval EFI_SUCCESS           The specific Usb device is connected successfully.\r
  @retval EFI_INVALID_PARAMETER Invalid HostControllerPi (not 0x00, 0x20 or 0xFF) \r
                                or RemainingDevicePath is not the USB class device path.\r
  @retval EFI_NOT_FOUND         The device specified by device path is not found.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectUsbDevByShortFormDP(\r
  IN UINT8                      HostControllerPI,\r
  IN EFI_DEVICE_PATH_PROTOCOL   *RemainingDevicePath\r
  );\r
  \r
\r
//\r
// The implementation of this function is provided by Platform code.\r
//\r
/**\r
  Convert Vendor device path to device name.\r
\r
  @param  Str      The buffer store device name\r
  @param  DevPath  Pointer to vendor device path\r
\r
**/\r
VOID\r
EFIAPI\r
DevPathVendor (\r
  IN OUT POOL_PRINT       *Str,\r
  IN VOID                 *DevPath\r
  );\r
\r
/**\r
  Concatenates a formatted unicode string to allocated pool.\r
  The caller must free the resulting buffer.\r
\r
  @param  Str      Tracks the allocated pool, size in use, and amount of pool allocated.\r
  @param  fmt      The format string\r
  @param  ...      The data will be printed.\r
\r
  @return Allocated buffer with the formatted string printed in it.\r
          The caller must free the allocated buffer.\r
          The buffer allocation is not packed.\r
\r
**/\r
CHAR16 *\r
EFIAPI\r
CatPrint (\r
  IN OUT POOL_PRINT   *Str,\r
  IN CHAR16           *fmt,\r
  ...\r
  );\r
#endif\r
\r