[mirror_edk2.git] / FatPkg / FatPei / FatLitePeim.h

/** @file\r
  Data structures for FAT recovery PEIM\r
\r
Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
\r
This program and the accompanying materials are licensed and made available\r
under the terms and conditions of the BSD License which accompanies this\r
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 _FAT_PEIM_H_\r
#define _FAT_PEIM_H_\r
\r
#include <PiPei.h>\r
\r
#include <Guid/RecoveryDevice.h>\r
#include <Ppi/BlockIo.h>\r
#include <Ppi/BlockIo2.h>\r
#include <Ppi/DeviceRecoveryModule.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/BaseLib.h>\r
#include <Library/PeimEntryPoint.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/PeiServicesTablePointerLib.h>\r
#include <Library/PeiServicesLib.h>\r
\r
#include "FatLiteApi.h"\r
#include "FatLiteFmt.h"\r
\r
//\r
// Definitions\r
//\r
#define PEI_FAT_RECOVERY_CAPSULE_WITH_NT_EMULATOR     L"fv0001.fv"\r
#define PEI_FAT_RECOVERY_CAPSULE_WITHOUT_NT_EMULATOR  L"fvmain.fv"\r
\r
#define PEI_FAT_CACHE_SIZE                            4\r
#define PEI_FAT_MAX_BLOCK_SIZE                        8192\r
#define FAT_MAX_FILE_NAME_LENGTH                      128\r
#define PEI_FAT_MAX_BLOCK_DEVICE                      64\r
#define PEI_FAT_MAX_BLOCK_IO_PPI                      32\r
#define PEI_FAT_MAX_VOLUME                            64\r
\r
#define PEI_FAT_MEMMORY_PAGE_SIZE                     0x1000\r
\r
//\r
// Data Structures\r
//\r
//\r
// The block device\r
//\r
typedef struct {\r
\r
  UINT32                        BlockSize;\r
  UINT64                        LastBlock;\r
  UINT32                        IoAlign;\r
  BOOLEAN                       Logical;\r
  BOOLEAN                       PartitionChecked;\r
\r
  //\r
  // Following fields only valid for logical device\r
  //\r
  CHAR8                         PartitionFlag[8];\r
  UINT64                        StartingPos;\r
  UINTN                         ParentDevNo;\r
\r
  //\r
  // Following fields only valid for physical device\r
  //\r
  EFI_PEI_BLOCK_DEVICE_TYPE     DevType;\r
  UINT8                         InterfaceType;\r
  //\r
  // EFI_PEI_READ_BLOCKS         ReadFunc;\r
  //\r
  EFI_PEI_RECOVERY_BLOCK_IO_PPI  *BlockIo;\r
  EFI_PEI_RECOVERY_BLOCK_IO2_PPI *BlockIo2;\r
  UINT8                          PhysicalDevNo;\r
} PEI_FAT_BLOCK_DEVICE;\r
\r
//\r
// the Volume structure\r
//\r
typedef struct {\r
\r
  UINTN         BlockDeviceNo;\r
  UINTN         VolumeNo;\r
  UINT64        VolumeSize;\r
  UINTN         MaxCluster;\r
  CHAR16        VolumeLabel[FAT_MAX_FILE_NAME_LENGTH];\r
  PEI_FAT_TYPE  FatType;\r
  UINT64        FatPos;\r
  UINT32        SectorSize;\r
  UINT32        ClusterSize;\r
  UINT64        FirstClusterPos;\r
  UINT64        RootDirPos;\r
  UINT32        RootEntries;\r
  UINT32        RootDirCluster;\r
\r
} PEI_FAT_VOLUME;\r
\r
//\r
// File instance\r
//\r
typedef struct {\r
\r
  PEI_FAT_VOLUME  *Volume;\r
  CHAR16          FileName[FAT_MAX_FILE_NAME_LENGTH];\r
\r
  BOOLEAN         IsFixedRootDir;\r
\r
  UINT32          StartingCluster;\r
  UINT32          CurrentPos;\r
  UINT32          StraightReadAmount;\r
  UINT32          CurrentCluster;\r
\r
  UINT8           Attributes;\r
  UINT32          FileSize;\r
\r
} PEI_FAT_FILE;\r
\r
//\r
// Cache Buffer\r
//\r
typedef struct {\r
\r
  BOOLEAN Valid;\r
  UINTN   BlockDeviceNo;\r
  UINT64  Lba;\r
  UINT32  Lru;\r
  UINT64  Buffer[PEI_FAT_MAX_BLOCK_SIZE / 8];\r
  UINTN   Size;\r
\r
} PEI_FAT_CACHE_BUFFER;\r
\r
//\r
// Private Data.\r
// This structure abstracts the whole memory usage in FAT PEIM.\r
// The entry point routine will get a chunk of memory (by whatever\r
// means) whose size is sizeof(PEI_FAT_PRIVATE_DATA), which is clean\r
// in both 32 and 64 bit environment. The boundary of the memory chunk\r
// should be 64bit aligned.\r
//\r
#define PEI_FAT_PRIVATE_DATA_SIGNATURE  SIGNATURE_32 ('p', 'f', 'a', 't')\r
\r
typedef struct {\r
\r
  UINTN                               Signature;\r
  EFI_PEI_DEVICE_RECOVERY_MODULE_PPI  DeviceRecoveryPpi;\r
  EFI_PEI_PPI_DESCRIPTOR              PpiDescriptor;\r
  EFI_PEI_NOTIFY_DESCRIPTOR           NotifyDescriptor[2];\r
\r
  UINT8                               UnicodeCaseMap[0x300];\r
  CHAR8                               *EngUpperMap;\r
  CHAR8                               *EngLowerMap;\r
  CHAR8                               *EngInfoMap;\r
\r
  UINT64                              BlockData[PEI_FAT_MAX_BLOCK_SIZE / 8];\r
  UINTN                               BlockDeviceCount;\r
  PEI_FAT_BLOCK_DEVICE                BlockDevice[PEI_FAT_MAX_BLOCK_DEVICE];\r
  UINTN                               VolumeCount;\r
  PEI_FAT_VOLUME                      Volume[PEI_FAT_MAX_VOLUME];\r
  PEI_FAT_FILE                        File;\r
  PEI_FAT_CACHE_BUFFER                CacheBuffer[PEI_FAT_CACHE_SIZE];\r
\r
} PEI_FAT_PRIVATE_DATA;\r
\r
#define PEI_FAT_PRIVATE_DATA_FROM_THIS(a) \\r
  CR (a,  PEI_FAT_PRIVATE_DATA, DeviceRecoveryPpi, PEI_FAT_PRIVATE_DATA_SIGNATURE)\r
\r
//\r
// Extract INT32 from char array\r
//\r
#define UNPACK_INT32(a) \\r
  (INT32) ((((UINT8 *) a)[0] << 0) | (((UINT8 *) a)[1] << 8) | (((UINT8 *) a)[2] << 16) | (((UINT8 *) a)[3] << 24))\r
\r
//\r
// Extract UINT32 from char array\r
//\r
#define UNPACK_UINT32(a) \\r
  (UINT32) ((((UINT8 *) a)[0] << 0) | (((UINT8 *) a)[1] << 8) | (((UINT8 *) a)[2] << 16) | (((UINT8 *) a)[3] << 24))\r
\r
\r
//\r
// API functions\r
//\r
\r
/**\r
  Finds the recovery file on a FAT volume.\r
  This function finds the the recovery file named FileName on a specified FAT volume and returns\r
  its FileHandle pointer.\r
\r
  @param  PrivateData             Global memory map for accessing global \r
                                  variables. \r
  @param  VolumeIndex             The index of the volume. \r
  @param  FileName                The recovery file name to find. \r
  @param  Handle                  The output file handle. \r
\r
  @retval EFI_DEVICE_ERROR        Some error occured when operating the FAT \r
                                  volume. \r
  @retval EFI_NOT_FOUND           The recovery file was not found. \r
  @retval EFI_SUCCESS             The recovery file was successfully found on the \r
                                  FAT volume.\r
\r
**/\r
EFI_STATUS\r
FindRecoveryFile (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN  UINTN                 VolumeIndex,\r
  IN  CHAR16                *FileName,\r
  OUT PEI_FILE_HANDLE       *Handle\r
  );\r
\r
\r
/**\r
  Returns the number of DXE capsules residing on the device.\r
  This function, by whatever mechanism, searches for DXE capsules from the associated device and\r
  returns the number and maximum size in bytes of the capsules discovered.Entry 1 is assumed to be\r
  the highest load priority and entry N is assumed to be the lowest priority.\r
\r
  @param  PeiServices             General-purpose services that are available to \r
                                  every PEIM. \r
  @param  This                    Indicates the \r
                                  EFI_PEI_DEVICE_RECOVERY_MODULE_PPI instance. \r
  @param  NumberRecoveryCapsules  Pointer to a caller-allocated UINTN.On output, \r
                                  *NumberRecoveryCapsules contains the number of \r
                                  recovery capsule images available for retrieval \r
                                  from this PEIM instance. \r
\r
  @retval EFI_SUCCESS             The function completed successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
GetNumberRecoveryCapsules (\r
  IN EFI_PEI_SERVICES                               **PeiServices,\r
  IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI             *This,\r
  OUT UINTN                                         *NumberRecoveryCapsules\r
  );\r
\r
\r
/**\r
  Returns the size and type of the requested recovery capsule.\r
  This function returns the size and type of the capsule specified by CapsuleInstance.\r
\r
  @param  PeiServices             General-purpose services that are available to \r
                                  every PEIM. \r
  @param  This                    Indicates the \r
                                  EFI_PEI_DEVICE_RECOVERY_MODULE_PPI instance. \r
  @param  CapsuleInstance         Specifies for which capsule instance to \r
                                  retrieve the information.T his parameter must \r
                                  be between one and the value returned by \r
                                  GetNumberRecoveryCapsules() in \r
                                  NumberRecoveryCapsules. \r
  @param  Size                    A pointer to a caller-allocated UINTN in which \r
                                  the size of the requested recovery module is \r
                                  returned. \r
  @param  CapsuleType             A pointer to a caller-allocated EFI_GUID in \r
                                  which the type of the requested recovery \r
                                  capsule is returned.T he semantic meaning of \r
                                  the value returned is defined by the \r
                                  implementation. \r
\r
  @retval EFI_SUCCESS             The capsule type and size were retrieved. \r
  @retval EFI_INVALID_PARAMETER   The input CapsuleInstance does not match any \r
                                  discovered recovery capsule.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
GetRecoveryCapsuleInfo (\r
  IN  EFI_PEI_SERVICES                              **PeiServices,\r
  IN  EFI_PEI_DEVICE_RECOVERY_MODULE_PPI            *This,\r
  IN  UINTN                                         CapsuleInstance,\r
  OUT UINTN                                         *Size,\r
  OUT EFI_GUID                                      *CapsuleType\r
  );\r
\r
\r
/**\r
  Loads a DXE capsule from some media into memory.\r
\r
  This function, by whatever mechanism, retrieves a DXE capsule from some device\r
  and loads it into memory. Note that the published interface is device neutral.\r
\r
  @param[in]     PeiServices       General-purpose services that are available \r
                                   to every PEIM\r
  @param[in]     This              Indicates the EFI_PEI_DEVICE_RECOVERY_MODULE_PPI\r
                                   instance.\r
  @param[in]     CapsuleInstance   Specifies which capsule instance to retrieve.\r
  @param[out]    Buffer            Specifies a caller-allocated buffer in which \r
                                   the requested recovery capsule will be returned.\r
\r
  @retval EFI_SUCCESS        The capsule was loaded correctly.\r
  @retval EFI_DEVICE_ERROR   A device error occurred.\r
  @retval EFI_NOT_FOUND      A requested recovery DXE capsule cannot be found.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
LoadRecoveryCapsule (\r
  IN EFI_PEI_SERVICES                             **PeiServices,\r
  IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI           *This,\r
  IN UINTN                                        CapsuleInstance,\r
  OUT VOID                                        *Buffer\r
  );\r
\r
\r
/**\r
  This version is different from the version in Unicode collation\r
  protocol in that this version strips off trailing blanks.\r
  Converts an 8.3 FAT file name using an OEM character set\r
  to a Null-terminated Unicode string.\r
  Here does not expand DBCS FAT chars.\r
\r
  @param  FatSize           The size of the string Fat in bytes. \r
  @param  Fat               A pointer to a Null-terminated string that contains \r
                            an 8.3 file name using an OEM character set. \r
  @param  Str               A pointer to a Null-terminated Unicode string. The \r
                            string must be allocated in advance to hold FatSize \r
                            Unicode characters\r
\r
**/\r
VOID\r
EngFatToStr (\r
  IN UINTN                            FatSize,\r
  IN CHAR8                            *Fat,\r
  OUT CHAR16                          *Str\r
  );\r
\r
\r
/**\r
  Performs a case-insensitive comparison of two Null-terminated Unicode strings.\r
\r
  @param  PrivateData       Global memory map for accessing global variables \r
  @param  Str1              First string to perform case insensitive comparison. \r
  @param  Str2              Second string to perform case insensitive comparison.\r
\r
**/\r
BOOLEAN\r
EngStriColl (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN CHAR16                 *Str1,\r
  IN CHAR16                 *Str2\r
  );\r
\r
\r
/**\r
  Reads a block of data from the block device by calling\r
  underlying Block I/O service.\r
\r
  @param  PrivateData       Global memory map for accessing global variables \r
  @param  BlockDeviceNo     The index for the block device number. \r
  @param  Lba               The logic block address to read data from. \r
  @param  BufferSize        The size of data in byte to read. \r
  @param  Buffer            The buffer of the \r
\r
  @retval EFI_DEVICE_ERROR  The specified block device number exceeds the maximum \r
                            device number. \r
  @retval EFI_DEVICE_ERROR  The maximum address has exceeded the maximum address \r
                            of the block device.\r
\r
**/\r
EFI_STATUS\r
FatReadBlock (\r
  IN  PEI_FAT_PRIVATE_DATA   *PrivateData,\r
  IN  UINTN                  BlockDeviceNo,\r
  IN  EFI_PEI_LBA            Lba,\r
  IN  UINTN                  BufferSize,\r
  OUT VOID                   *Buffer\r
  );\r
\r
\r
/**\r
  Check if there is a valid FAT in the corresponding Block device\r
  of the volume and if yes, fill in the relevant fields for the\r
  volume structure. Note there should be a valid Block device number\r
  already set.\r
\r
  @param  PrivateData            Global memory map for accessing global \r
                                 variables. \r
  @param  Volume                 On input, the BlockDeviceNumber field of the \r
                                 Volume  should be a valid value. On successful \r
                                 output, all  fields except the VolumeNumber \r
                                 field is initialized. \r
\r
  @retval EFI_SUCCESS            A FAT is found and the volume structure is \r
                                 initialized. \r
  @retval EFI_NOT_FOUND          There is no FAT on the corresponding device. \r
  @retval EFI_DEVICE_ERROR       There is something error while accessing device.\r
\r
**/\r
EFI_STATUS\r
FatGetBpbInfo (\r
  IN      PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN OUT  PEI_FAT_VOLUME        *Volume\r
  );\r
\r
\r
/**\r
  Gets the next cluster in the cluster chain.\r
\r
  @param  PrivateData            Global memory map for accessing global variables \r
  @param  Volume                 The volume \r
  @param  Cluster                The cluster \r
  @param  NextCluster            The cluster number of the next cluster \r
\r
  @retval EFI_SUCCESS            The address is got \r
  @retval EFI_INVALID_PARAMETER  ClusterNo exceeds the MaxCluster of the volume. \r
  @retval EFI_DEVICE_ERROR       Read disk error\r
\r
**/\r
EFI_STATUS\r
FatGetNextCluster (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN  PEI_FAT_VOLUME        *Volume,\r
  IN  UINT32                Cluster,\r
  OUT UINT32                *NextCluster\r
  );\r
\r
\r
/**\r
  Disk reading.\r
\r
  @param  PrivateData       the global memory map; \r
  @param  BlockDeviceNo     the block device to read; \r
  @param  StartingAddress   the starting address. \r
  @param  Size              the amount of data to read. \r
  @param  Buffer            the buffer holding the data \r
\r
  @retval EFI_SUCCESS       The function completed successfully.\r
  @retval EFI_DEVICE_ERROR  Something error.\r
\r
**/\r
EFI_STATUS\r
FatReadDisk (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN  UINTN                 BlockDeviceNo,\r
  IN  UINT64                StartingAddress,\r
  IN  UINTN                 Size,\r
  OUT VOID                  *Buffer\r
  );\r
\r
\r
/**\r
  Set a file's CurrentPos and CurrentCluster, then compute StraightReadAmount.\r
\r
  @param  PrivateData            the global memory map \r
  @param  File                   the file \r
  @param  Pos                    the Position which is offset from the file's \r
                                 CurrentPos \r
\r
  @retval EFI_SUCCESS            Success. \r
  @retval EFI_INVALID_PARAMETER  Pos is beyond file's size. \r
  @retval EFI_DEVICE_ERROR       Something error while accessing media.\r
\r
**/\r
EFI_STATUS\r
FatSetFilePos (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN  PEI_FAT_FILE          *File,\r
  IN  UINT32                Pos\r
  );\r
\r
\r
/**\r
  Reads file data. Updates the file's CurrentPos.\r
\r
  @param  PrivateData            Global memory map for accessing global variables \r
  @param  File                   The file. \r
  @param  Size                   The amount of data to read. \r
  @param  Buffer                 The buffer storing the data. \r
\r
  @retval EFI_SUCCESS            The data is read. \r
  @retval EFI_INVALID_PARAMETER  File is invalid. \r
  @retval EFI_DEVICE_ERROR       Something error while accessing media.\r
\r
**/\r
EFI_STATUS\r
FatReadFile (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN  PEI_FAT_FILE          *File,\r
  IN  UINTN                 Size,\r
  OUT VOID                  *Buffer\r
  );\r
\r
\r
/**\r
  This function reads the next item in the parent directory and\r
  initializes the output parameter SubFile (CurrentPos is initialized to 0).\r
  The function updates the CurrentPos of the parent dir to after the item read.\r
  If no more items were found, the function returns EFI_NOT_FOUND.\r
\r
  @param  PrivateData            Global memory map for accessing global variables \r
  @param  ParentDir              The parent directory. \r
  @param  SubFile                The File structure containing the sub file that \r
                                 is caught. \r
\r
  @retval EFI_SUCCESS            The next sub file is obtained. \r
  @retval EFI_INVALID_PARAMETER  The ParentDir is not a directory. \r
  @retval EFI_NOT_FOUND          No more sub file exists. \r
  @retval EFI_DEVICE_ERROR       Something error while accessing media.\r
\r
**/\r
EFI_STATUS\r
FatReadNextDirectoryEntry (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData,\r
  IN  PEI_FAT_FILE          *ParentDir,\r
  OUT PEI_FAT_FILE          *SubFile\r
  );\r
\r
\r
/**\r
  This function finds partitions (logical devices) in physical block devices.\r
\r
  @param  PrivateData       Global memory map for accessing global variables.\r
\r
**/\r
VOID\r
FatFindPartitions (\r
  IN  PEI_FAT_PRIVATE_DATA  *PrivateData\r
  );\r
\r
#endif // _FAT_PEIM_H_\r
Commit	Line	Data
2f4dfa84 JJ	1	/** @file\r
	2	Data structures for FAT recovery PEIM\r
	3	\r
8a467be1	4	Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
2f4dfa84 JJ	5	\r
	6	This program and the accompanying materials are licensed and made available\r
	7	under the terms and conditions of the BSD License which accompanies this\r
	8	distribution. The full text of the license may be found at\r
	9	http://opensource.org/licenses/bsd-license.php\r
	10	\r
	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	13	\r
	14	**/\r
	15	\r
	16	#ifndef _FAT_PEIM_H_\r
	17	#define _FAT_PEIM_H_\r
	18	\r
	19	#include <PiPei.h>\r
	20	\r
	21	#include <Guid/RecoveryDevice.h>\r
	22	#include <Ppi/BlockIo.h>\r
8a467be1	23	#include <Ppi/BlockIo2.h>\r
2f4dfa84 JJ	24	#include <Ppi/DeviceRecoveryModule.h>\r
	25	\r
	26	#include <Library/DebugLib.h>\r
	27	#include <Library/BaseLib.h>\r
	28	#include <Library/PeimEntryPoint.h>\r
	29	#include <Library/BaseMemoryLib.h>\r
	30	#include <Library/PcdLib.h>\r
	31	#include <Library/PeiServicesTablePointerLib.h>\r
	32	#include <Library/PeiServicesLib.h>\r
	33	\r
	34	#include "FatLiteApi.h"\r
	35	#include "FatLiteFmt.h"\r
	36	\r
	37	//\r
	38	// Definitions\r
	39	//\r
	40	#define PEI_FAT_RECOVERY_CAPSULE_WITH_NT_EMULATOR L"fv0001.fv"\r
	41	#define PEI_FAT_RECOVERY_CAPSULE_WITHOUT_NT_EMULATOR L"fvmain.fv"\r
	42	\r
	43	#define PEI_FAT_CACHE_SIZE 4\r
	44	#define PEI_FAT_MAX_BLOCK_SIZE 8192\r
	45	#define FAT_MAX_FILE_NAME_LENGTH 128\r
	46	#define PEI_FAT_MAX_BLOCK_DEVICE 64\r
	47	#define PEI_FAT_MAX_BLOCK_IO_PPI 32\r
	48	#define PEI_FAT_MAX_VOLUME 64\r
	49	\r
	50	#define PEI_FAT_MEMMORY_PAGE_SIZE 0x1000\r
	51	\r
	52	//\r
	53	// Data Structures\r
	54	//\r
	55	//\r
	56	// The block device\r
	57	//\r
	58	typedef struct {\r
	59	\r
	60	UINT32 BlockSize;\r
	61	UINT64 LastBlock;\r
	62	UINT32 IoAlign;\r
	63	BOOLEAN Logical;\r
	64	BOOLEAN PartitionChecked;\r
	65	\r
	66	//\r
	67	// Following fields only valid for logical device\r
	68	//\r
	69	CHAR8 PartitionFlag[8];\r
	70	UINT64 StartingPos;\r
	71	UINTN ParentDevNo;\r
	72	\r
	73	//\r
	74	// Following fields only valid for physical device\r
	75	//\r
	76	EFI_PEI_BLOCK_DEVICE_TYPE DevType;\r
8a467be1	77	UINT8 InterfaceType;\r
2f4dfa84 JJ	78	//\r
	79	// EFI_PEI_READ_BLOCKS ReadFunc;\r
	80	//\r
8a467be1 FT	81	EFI_PEI_RECOVERY_BLOCK_IO_PPI *BlockIo;\r
	82	EFI_PEI_RECOVERY_BLOCK_IO2_PPI *BlockIo2;\r
	83	UINT8 PhysicalDevNo;\r
2f4dfa84 JJ	84	} PEI_FAT_BLOCK_DEVICE;\r
	85	\r
	86	//\r
	87	// the Volume structure\r
	88	//\r
	89	typedef struct {\r
	90	\r
	91	UINTN BlockDeviceNo;\r
	92	UINTN VolumeNo;\r
	93	UINT64 VolumeSize;\r
	94	UINTN MaxCluster;\r
	95	CHAR16 VolumeLabel[FAT_MAX_FILE_NAME_LENGTH];\r
	96	PEI_FAT_TYPE FatType;\r
	97	UINT64 FatPos;\r
	98	UINT32 SectorSize;\r
	99	UINT32 ClusterSize;\r
	100	UINT64 FirstClusterPos;\r
	101	UINT64 RootDirPos;\r
	102	UINT32 RootEntries;\r
	103	UINT32 RootDirCluster;\r
	104	\r
	105	} PEI_FAT_VOLUME;\r
	106	\r
	107	//\r
	108	// File instance\r
	109	//\r
	110	typedef struct {\r
	111	\r
	112	PEI_FAT_VOLUME *Volume;\r
	113	CHAR16 FileName[FAT_MAX_FILE_NAME_LENGTH];\r
	114	\r
	115	BOOLEAN IsFixedRootDir;\r
	116	\r
	117	UINT32 StartingCluster;\r
	118	UINT32 CurrentPos;\r
	119	UINT32 StraightReadAmount;\r
	120	UINT32 CurrentCluster;\r
	121	\r
	122	UINT8 Attributes;\r
	123	UINT32 FileSize;\r
	124	\r
	125	} PEI_FAT_FILE;\r
	126	\r
	127	//\r
	128	// Cache Buffer\r
	129	//\r
	130	typedef struct {\r
	131	\r
	132	BOOLEAN Valid;\r
	133	UINTN BlockDeviceNo;\r
	134	UINT64 Lba;\r
	135	UINT32 Lru;\r
	136	UINT64 Buffer[PEI_FAT_MAX_BLOCK_SIZE / 8];\r
	137	UINTN Size;\r
	138	\r
	139	} PEI_FAT_CACHE_BUFFER;\r
	140	\r
	141	//\r
	142	// Private Data.\r
	143	// This structure abstracts the whole memory usage in FAT PEIM.\r
	144	// The entry point routine will get a chunk of memory (by whatever\r
	145	// means) whose size is sizeof(PEI_FAT_PRIVATE_DATA), which is clean\r
	146	// in both 32 and 64 bit environment. The boundary of the memory chunk\r
	147	// should be 64bit aligned.\r
148	//\r
149	#define PEI_FAT_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('p', 'f', 'a', 't')\r
150	\r
151	typedef struct {\r
152	\r
153	UINTN Signature;\r
154	EFI_PEI_DEVICE_RECOVERY_MODULE_PPI DeviceRecoveryPpi;\r
155	EFI_PEI_PPI_DESCRIPTOR PpiDescriptor;\r
8a467be1	156	EFI_PEI_NOTIFY_DESCRIPTOR NotifyDescriptor[2];\r
2f4dfa84 JJ	157	\r
	158	UINT8 UnicodeCaseMap[0x300];\r
	159	CHAR8 *EngUpperMap;\r
	160	CHAR8 *EngLowerMap;\r
	161	CHAR8 *EngInfoMap;\r
	162	\r
	163	UINT64 BlockData[PEI_FAT_MAX_BLOCK_SIZE / 8];\r
	164	UINTN BlockDeviceCount;\r
	165	PEI_FAT_BLOCK_DEVICE BlockDevice[PEI_FAT_MAX_BLOCK_DEVICE];\r
	166	UINTN VolumeCount;\r
	167	PEI_FAT_VOLUME Volume[PEI_FAT_MAX_VOLUME];\r
	168	PEI_FAT_FILE File;\r
	169	PEI_FAT_CACHE_BUFFER CacheBuffer[PEI_FAT_CACHE_SIZE];\r
	170	\r
	171	} PEI_FAT_PRIVATE_DATA;\r
	172	\r
	173	#define PEI_FAT_PRIVATE_DATA_FROM_THIS(a) \\r
	174	CR (a, PEI_FAT_PRIVATE_DATA, DeviceRecoveryPpi, PEI_FAT_PRIVATE_DATA_SIGNATURE)\r
	175	\r
	176	//\r
	177	// Extract INT32 from char array\r
	178	//\r
	179	#define UNPACK_INT32(a) \\r
	180	(INT32) ((((UINT8 ) a)[0] << 0) \| (((UINT8 ) a)[1] << 8) \| (((UINT8 ) a)[2] << 16) \| (((UINT8 ) a)[3] << 24))\r
	181	\r
	182	//\r
	183	// Extract UINT32 from char array\r
	184	//\r
	185	#define UNPACK_UINT32(a) \\r
	186	(UINT32) ((((UINT8 ) a)[0] << 0) \| (((UINT8 ) a)[1] << 8) \| (((UINT8 ) a)[2] << 16) \| (((UINT8 ) a)[3] << 24))\r
	187	\r
	188	\r
	189	//\r
	190	// API functions\r
	191	//\r
	192	\r
	193	/**\r
	194	Finds the recovery file on a FAT volume.\r
	195	This function finds the the recovery file named FileName on a specified FAT volume and returns\r
	196	its FileHandle pointer.\r
	197	\r
	198	@param PrivateData Global memory map for accessing global \r
	199	variables. \r
	200	@param VolumeIndex The index of the volume. \r
	201	@param FileName The recovery file name to find. \r
	202	@param Handle The output file handle. \r
	203	\r
	204	@retval EFI_DEVICE_ERROR Some error occured when operating the FAT \r
	205	volume. \r
	206	@retval EFI_NOT_FOUND The recovery file was not found. \r
	207	@retval EFI_SUCCESS The recovery file was successfully found on the \r
	208	FAT volume.\r
	209	\r
	210	**/\r
	211	EFI_STATUS\r
	212	FindRecoveryFile (\r
	213	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
	214	IN UINTN VolumeIndex,\r
	215	IN CHAR16 *FileName,\r
	216	OUT PEI_FILE_HANDLE *Handle\r
	217	);\r
	218	\r
	219	\r
	220	/**\r
221	Returns the number of DXE capsules residing on the device.\r
222	This function, by whatever mechanism, searches for DXE capsules from the associated device and\r
223	returns the number and maximum size in bytes of the capsules discovered.Entry 1 is assumed to be\r
224	the highest load priority and entry N is assumed to be the lowest priority.\r
225	\r
226	@param PeiServices General-purpose services that are available to \r
227	every PEIM. \r
228	@param This Indicates the \r
229	EFI_PEI_DEVICE_RECOVERY_MODULE_PPI instance. \r
230	@param NumberRecoveryCapsules Pointer to a caller-allocated UINTN.On output, \r
231	*NumberRecoveryCapsules contains the number of \r
232	recovery capsule images available for retrieval \r
233	from this PEIM instance. \r
234	\r
235	@retval EFI_SUCCESS The function completed successfully.\r
236	\r
237	**/\r
238	EFI_STATUS\r
239	EFIAPI\r
240	GetNumberRecoveryCapsules (\r
241	IN EFI_PEI_SERVICES **PeiServices,\r
242	IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI *This,\r
243	OUT UINTN *NumberRecoveryCapsules\r
244	);\r
245	\r
246	\r
247	/**\r
248	Returns the size and type of the requested recovery capsule.\r
249	This function returns the size and type of the capsule specified by CapsuleInstance.\r
250	\r
251	@param PeiServices General-purpose services that are available to \r
252	every PEIM. \r
253	@param This Indicates the \r
254	EFI_PEI_DEVICE_RECOVERY_MODULE_PPI instance. \r
255	@param CapsuleInstance Specifies for which capsule instance to \r
256	retrieve the information.T his parameter must \r
257	be between one and the value returned by \r
258	GetNumberRecoveryCapsules() in \r
259	NumberRecoveryCapsules. \r
260	@param Size A pointer to a caller-allocated UINTN in which \r
261	the size of the requested recovery module is \r
262	returned. \r
263	@param CapsuleType A pointer to a caller-allocated EFI_GUID in \r
264	which the type of the requested recovery \r
265	capsule is returned.T he semantic meaning of \r
266	the value returned is defined by the \r
267	implementation. \r
268	\r
269	@retval EFI_SUCCESS The capsule type and size were retrieved. \r
270	@retval EFI_INVALID_PARAMETER The input CapsuleInstance does not match any \r
271	discovered recovery capsule.\r
272	\r
273	**/\r
274	EFI_STATUS\r
275	EFIAPI\r
276	GetRecoveryCapsuleInfo (\r
277	IN EFI_PEI_SERVICES **PeiServices,\r
278	IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI *This,\r
279	IN UINTN CapsuleInstance,\r
280	OUT UINTN *Size,\r
281	OUT EFI_GUID *CapsuleType\r
282	);\r
283	\r
284	\r
285	/**\r
286	Loads a DXE capsule from some media into memory.\r
287	\r
288	This function, by whatever mechanism, retrieves a DXE capsule from some device\r
289	and loads it into memory. Note that the published interface is device neutral.\r
290	\r
291	@param[in] PeiServices General-purpose services that are available \r
292	to every PEIM\r
293	@param[in] This Indicates the EFI_PEI_DEVICE_RECOVERY_MODULE_PPI\r
294	instance.\r
295	@param[in] CapsuleInstance Specifies which capsule instance to retrieve.\r
296	@param[out] Buffer Specifies a caller-allocated buffer in which \r
297	the requested recovery capsule will be returned.\r
298	\r
299	@retval EFI_SUCCESS The capsule was loaded correctly.\r
300	@retval EFI_DEVICE_ERROR A device error occurred.\r
301	@retval EFI_NOT_FOUND A requested recovery DXE capsule cannot be found.\r
302	\r
303	**/\r
304	EFI_STATUS\r
305	EFIAPI\r
306	LoadRecoveryCapsule (\r
307	IN EFI_PEI_SERVICES **PeiServices,\r
308	IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI *This,\r
309	IN UINTN CapsuleInstance,\r
310	OUT VOID *Buffer\r
311	);\r
312	\r
313	\r
314	/**\r
315	This version is different from the version in Unicode collation\r
316	protocol in that this version strips off trailing blanks.\r
317	Converts an 8.3 FAT file name using an OEM character set\r
318	to a Null-terminated Unicode string.\r
319	Here does not expand DBCS FAT chars.\r
320	\r
321	@param FatSize The size of the string Fat in bytes. \r
322	@param Fat A pointer to a Null-terminated string that contains \r
323	an 8.3 file name using an OEM character set. \r
324	@param Str A pointer to a Null-terminated Unicode string. The \r
325	string must be allocated in advance to hold FatSize \r
326	Unicode characters\r
327	\r
328	**/\r
329	VOID\r
330	EngFatToStr (\r
331	IN UINTN FatSize,\r
332	IN CHAR8 *Fat,\r
333	OUT CHAR16 *Str\r
334	);\r
335	\r
336	\r
337	/**\r
338	Performs a case-insensitive comparison of two Null-terminated Unicode strings.\r
339	\r
340	@param PrivateData Global memory map for accessing global variables \r
341	@param Str1 First string to perform case insensitive comparison. \r
342	@param Str2 Second string to perform case insensitive comparison.\r
343	\r
344	**/\r
345	BOOLEAN\r
346	EngStriColl (\r
347	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
348	IN CHAR16 *Str1,\r
349	IN CHAR16 *Str2\r
350	);\r
351	\r
352	\r
353	/**\r
354	Reads a block of data from the block device by calling\r
355	underlying Block I/O service.\r
356	\r
357	@param PrivateData Global memory map for accessing global variables \r
358	@param BlockDeviceNo The index for the block device number. \r
359	@param Lba The logic block address to read data from. \r
360	@param BufferSize The size of data in byte to read. \r
361	@param Buffer The buffer of the \r
362	\r
363	@retval EFI_DEVICE_ERROR The specified block device number exceeds the maximum \r
364	device number. \r
365	@retval EFI_DEVICE_ERROR The maximum address has exceeded the maximum address \r
366	of the block device.\r
367	\r
368	**/\r
369	EFI_STATUS\r
370	FatReadBlock (\r
371	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
372	IN UINTN BlockDeviceNo,\r
373	IN EFI_PEI_LBA Lba,\r
374	IN UINTN BufferSize,\r
375	OUT VOID *Buffer\r
376	);\r
377	\r
378	\r
379	/**\r
380	Check if there is a valid FAT in the corresponding Block device\r
381	of the volume and if yes, fill in the relevant fields for the\r
382	volume structure. Note there should be a valid Block device number\r
383	already set.\r
384	\r
385	@param PrivateData Global memory map for accessing global \r
386	variables. \r
387	@param Volume On input, the BlockDeviceNumber field of the \r
388	Volume should be a valid value. On successful \r
389	output, all fields except the VolumeNumber \r
390	field is initialized. \r
391	\r
392	@retval EFI_SUCCESS A FAT is found and the volume structure is \r
393	initialized. \r
394	@retval EFI_NOT_FOUND There is no FAT on the corresponding device. \r
395	@retval EFI_DEVICE_ERROR There is something error while accessing device.\r
396	\r
397	**/\r
398	EFI_STATUS\r
399	FatGetBpbInfo (\r
400	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
401	IN OUT PEI_FAT_VOLUME *Volume\r
402	);\r
403	\r
404	\r
405	/**\r
406	Gets the next cluster in the cluster chain.\r
407	\r
408	@param PrivateData Global memory map for accessing global variables \r
409	@param Volume The volume \r
410	@param Cluster The cluster \r
411	@param NextCluster The cluster number of the next cluster \r
412	\r
413	@retval EFI_SUCCESS The address is got \r
414	@retval EFI_INVALID_PARAMETER ClusterNo exceeds the MaxCluster of the volume. \r
415	@retval EFI_DEVICE_ERROR Read disk error\r
416	\r
417	**/\r
418	EFI_STATUS\r
419	FatGetNextCluster (\r
420	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
421	IN PEI_FAT_VOLUME *Volume,\r
422	IN UINT32 Cluster,\r
423	OUT UINT32 *NextCluster\r
424	);\r
425	\r
426	\r
427	/**\r
428	Disk reading.\r
429	\r
430	@param PrivateData the global memory map; \r
431	@param BlockDeviceNo the block device to read; \r
432	@param StartingAddress the starting address. \r
433	@param Size the amount of data to read. \r
434	@param Buffer the buffer holding the data \r
435	\r
436	@retval EFI_SUCCESS The function completed successfully.\r
437	@retval EFI_DEVICE_ERROR Something error.\r
438	\r
439	**/\r
440	EFI_STATUS\r
441	FatReadDisk (\r
442	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
443	IN UINTN BlockDeviceNo,\r
444	IN UINT64 StartingAddress,\r
445	IN UINTN Size,\r
446	OUT VOID *Buffer\r
447	);\r
448	\r
449	\r
450	/**\r
451	Set a file's CurrentPos and CurrentCluster, then compute StraightReadAmount.\r
452	\r
453	@param PrivateData the global memory map \r
454	@param File the file \r
455	@param Pos the Position which is offset from the file's \r
456	CurrentPos \r
457	\r
458	@retval EFI_SUCCESS Success. \r
459	@retval EFI_INVALID_PARAMETER Pos is beyond file's size. \r
460	@retval EFI_DEVICE_ERROR Something error while accessing media.\r
461	\r
462	**/\r
463	EFI_STATUS\r
464	FatSetFilePos (\r
465	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
466	IN PEI_FAT_FILE *File,\r
467	IN UINT32 Pos\r
468	);\r
469	\r
470	\r
471	/**\r
472	Reads file data. Updates the file's CurrentPos.\r
473	\r
474	@param PrivateData Global memory map for accessing global variables \r
475	@param File The file. \r
476	@param Size The amount of data to read. \r
477	@param Buffer The buffer storing the data. \r
478	\r
479	@retval EFI_SUCCESS The data is read. \r
480	@retval EFI_INVALID_PARAMETER File is invalid. \r
481	@retval EFI_DEVICE_ERROR Something error while accessing media.\r
482	\r
483	**/\r
484	EFI_STATUS\r
485	FatReadFile (\r
486	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
487	IN PEI_FAT_FILE *File,\r
488	IN UINTN Size,\r
489	OUT VOID *Buffer\r
490	);\r
491	\r
492	\r
493	/**\r
494	This function reads the next item in the parent directory and\r
495	initializes the output parameter SubFile (CurrentPos is initialized to 0).\r
496	The function updates the CurrentPos of the parent dir to after the item read.\r
497	If no more items were found, the function returns EFI_NOT_FOUND.\r
498	\r
499	@param PrivateData Global memory map for accessing global variables \r
500	@param ParentDir The parent directory. \r
501	@param SubFile The File structure containing the sub file that \r
502	is caught. \r
503	\r
504	@retval EFI_SUCCESS The next sub file is obtained. \r
505	@retval EFI_INVALID_PARAMETER The ParentDir is not a directory. \r
506	@retval EFI_NOT_FOUND No more sub file exists. \r
507	@retval EFI_DEVICE_ERROR Something error while accessing media.\r
508	\r
509	**/\r
510	EFI_STATUS\r
511	FatReadNextDirectoryEntry (\r
512	IN PEI_FAT_PRIVATE_DATA *PrivateData,\r
513	IN PEI_FAT_FILE *ParentDir,\r
514	OUT PEI_FAT_FILE *SubFile\r
515	);\r
516	\r
517	\r
518	/**\r
519	This function finds partitions (logical devices) in physical block devices.\r
520	\r
521	@param PrivateData Global memory map for accessing global variables.\r
522	\r
523	**/\r
524	VOID\r
525	FatFindPartitions (\r
526	IN PEI_FAT_PRIVATE_DATA *PrivateData\r
527	);\r
528	\r
529	#endif // _FAT_PEIM_H_\r