tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
audk/FatPkg/FatPei/FatLitePeim.h

500 lines
17 KiB
C
Raw Blame History

/** @file
Data structures for FAT recovery PEIM
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _FAT_PEIM_H_
#define _FAT_PEIM_H_
#include <PiPei.h>
#include <Guid/RecoveryDevice.h>
#include <Ppi/BlockIo.h>
#include <Ppi/BlockIo2.h>
#include <Ppi/DeviceRecoveryModule.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/PeimEntryPoint.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PcdLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <Library/PeiServicesLib.h>
#include "FatLiteApi.h"
#include "FatLiteFmt.h"
//
// Definitions
//
#define PEI_FAT_CACHE_SIZE 4
#define PEI_FAT_MAX_BLOCK_SIZE 8192
#define FAT_MAX_FILE_NAME_LENGTH 128
#define PEI_FAT_MAX_BLOCK_DEVICE 64
#define PEI_FAT_MAX_BLOCK_IO_PPI 32
#define PEI_FAT_MAX_VOLUME 64
#define PEI_FAT_MEMORY_PAGE_SIZE 0x1000
//
// Data Structures
//
//
// The block device
//
typedef struct {
UINT32 BlockSize;
UINT64 LastBlock;
UINT32 IoAlign;
BOOLEAN Logical;
BOOLEAN PartitionChecked;
//
// Following fields only valid for logical device
//
CHAR8 PartitionFlag[8];
UINT64 StartingPos;
UINTN ParentDevNo;
//
// Following fields only valid for physical device
//
EFI_PEI_BLOCK_DEVICE_TYPE DevType;
UINT8 InterfaceType;
//
// EFI_PEI_READ_BLOCKS ReadFunc;
//
EFI_PEI_RECOVERY_BLOCK_IO_PPI *BlockIo;
EFI_PEI_RECOVERY_BLOCK_IO2_PPI *BlockIo2;
UINT8 PhysicalDevNo;
} PEI_FAT_BLOCK_DEVICE;
//
// the Volume structure
//
typedef struct {
UINTN BlockDeviceNo;
UINTN VolumeNo;
UINT64 VolumeSize;
UINTN MaxCluster;
CHAR16 VolumeLabel[FAT_MAX_FILE_NAME_LENGTH];
PEI_FAT_TYPE FatType;
UINT64 FatPos;
UINT32 SectorSize;
UINT32 ClusterSize;
UINT64 FirstClusterPos;
UINT64 RootDirPos;
UINT32 RootEntries;
UINT32 RootDirCluster;
} PEI_FAT_VOLUME;
//
// File instance
//
typedef struct {
PEI_FAT_VOLUME *Volume;
CHAR16 FileName[FAT_MAX_FILE_NAME_LENGTH];
BOOLEAN IsFixedRootDir;
UINT32 StartingCluster;
UINT32 CurrentPos;
UINT32 StraightReadAmount;
UINT32 CurrentCluster;
UINT8 Attributes;
UINT32 FileSize;
} PEI_FAT_FILE;
//
// Cache Buffer
//
typedef struct {
BOOLEAN Valid;
UINTN BlockDeviceNo;
UINT64 Lba;
UINT32 Lru;
UINT64 Buffer[PEI_FAT_MAX_BLOCK_SIZE / 8];
UINTN Size;
} PEI_FAT_CACHE_BUFFER;
//
// Private Data.
// This structure abstracts the whole memory usage in FAT PEIM.
// The entry point routine will get a chunk of memory (by whatever
// means) whose size is sizeof(PEI_FAT_PRIVATE_DATA), which is clean
// in both 32 and 64 bit environment. The boundary of the memory chunk
// should be 64bit aligned.
//
#define PEI_FAT_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('p', 'f', 'a', 't')
typedef struct {
UINTN Signature;
EFI_PEI_DEVICE_RECOVERY_MODULE_PPI DeviceRecoveryPpi;
EFI_PEI_PPI_DESCRIPTOR PpiDescriptor;
EFI_PEI_NOTIFY_DESCRIPTOR NotifyDescriptor[2];
UINT8 UnicodeCaseMap[0x300];
CHAR8 *EngUpperMap;
CHAR8 *EngLowerMap;
CHAR8 *EngInfoMap;
UINT64 BlockData[PEI_FAT_MAX_BLOCK_SIZE / 8];
UINTN BlockDeviceCount;
PEI_FAT_BLOCK_DEVICE BlockDevice[PEI_FAT_MAX_BLOCK_DEVICE];
UINTN VolumeCount;
PEI_FAT_VOLUME Volume[PEI_FAT_MAX_VOLUME];
PEI_FAT_FILE File;
PEI_FAT_CACHE_BUFFER CacheBuffer[PEI_FAT_CACHE_SIZE];
} PEI_FAT_PRIVATE_DATA;
#define PEI_FAT_PRIVATE_DATA_FROM_THIS(a) \
CR (a, PEI_FAT_PRIVATE_DATA, DeviceRecoveryPpi, PEI_FAT_PRIVATE_DATA_SIGNATURE)
//
// Extract INT32 from char array
//
#define UNPACK_INT32(a) \
(INT32) ((((UINT8 *) a)[0] << 0) | (((UINT8 *) a)[1] << 8) | (((UINT8 *) a)[2] << 16) | (((UINT8 *) a)[3] << 24))
//
// Extract UINT32 from char array
//
#define UNPACK_UINT32(a) \
(UINT32) ((((UINT8 *) a)[0] << 0) | (((UINT8 *) a)[1] << 8) | (((UINT8 *) a)[2] << 16) | (((UINT8 *) a)[3] << 24))
//
// API functions
//
/**
Finds the recovery file on a FAT volume.
This function finds the recovery file named FileName on a specified FAT volume and returns
its FileHandle pointer.
@param PrivateData Global memory map for accessing global
variables.
@param VolumeIndex The index of the volume.
@param FileName The recovery file name to find.
@param Handle The output file handle.
@retval EFI_DEVICE_ERROR Some error occurred when operating the FAT
volume.
@retval EFI_NOT_FOUND The recovery file was not found.
@retval EFI_SUCCESS The recovery file was successfully found on the
FAT volume.
**/
EFI_STATUS
FindRecoveryFile (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN UINTN VolumeIndex,
IN CHAR16 *FileName,
OUT PEI_FILE_HANDLE *Handle
);
/**
Returns the number of DXE capsules residing on the device.
This function, by whatever mechanism, searches for DXE capsules from the associated device and
returns the number and maximum size in bytes of the capsules discovered.Entry 1 is assumed to be
the highest load priority and entry N is assumed to be the lowest priority.
@param PeiServices General-purpose services that are available to
every PEIM.
@param This Indicates the
EFI_PEI_DEVICE_RECOVERY_MODULE_PPI instance.
@param NumberRecoveryCapsules Pointer to a caller-allocated UINTN.On output,
*NumberRecoveryCapsules contains the number of
recovery capsule images available for retrieval
from this PEIM instance.
@retval EFI_SUCCESS The function completed successfully.
**/
EFI_STATUS
EFIAPI
GetNumberRecoveryCapsules (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI *This,
OUT UINTN *NumberRecoveryCapsules
);
/**
Returns the size and type of the requested recovery capsule.
This function returns the size and type of the capsule specified by CapsuleInstance.
@param PeiServices General-purpose services that are available to
every PEIM.
@param This Indicates the
EFI_PEI_DEVICE_RECOVERY_MODULE_PPI instance.
@param CapsuleInstance Specifies for which capsule instance to
retrieve the information.T his parameter must
be between one and the value returned by
GetNumberRecoveryCapsules() in
NumberRecoveryCapsules.
@param Size A pointer to a caller-allocated UINTN in which
the size of the requested recovery module is
returned.
@param CapsuleType A pointer to a caller-allocated EFI_GUID in
which the type of the requested recovery
capsule is returned.T he semantic meaning of
the value returned is defined by the
implementation.
@retval EFI_SUCCESS The capsule type and size were retrieved.
@retval EFI_INVALID_PARAMETER The input CapsuleInstance does not match any
discovered recovery capsule.
**/
EFI_STATUS
EFIAPI
GetRecoveryCapsuleInfo (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI *This,
IN UINTN CapsuleInstance,
OUT UINTN *Size,
OUT EFI_GUID *CapsuleType
);
/**
Loads a DXE capsule from some media into memory.
This function, by whatever mechanism, retrieves a DXE capsule from some device
and loads it into memory. Note that the published interface is device neutral.
@param[in] PeiServices General-purpose services that are available
to every PEIM
@param[in] This Indicates the EFI_PEI_DEVICE_RECOVERY_MODULE_PPI
instance.
@param[in] CapsuleInstance Specifies which capsule instance to retrieve.
@param[out] Buffer Specifies a caller-allocated buffer in which
the requested recovery capsule will be returned.
@retval EFI_SUCCESS The capsule was loaded correctly.
@retval EFI_DEVICE_ERROR A device error occurred.
@retval EFI_NOT_FOUND A requested recovery DXE capsule cannot be found.
**/
EFI_STATUS
EFIAPI
LoadRecoveryCapsule (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_DEVICE_RECOVERY_MODULE_PPI *This,
IN UINTN CapsuleInstance,
OUT VOID *Buffer
);
/**
This version is different from the version in Unicode collation
protocol in that this version strips off trailing blanks.
Converts an 8.3 FAT file name using an OEM character set
to a Null-terminated Unicode string.
Here does not expand DBCS FAT chars.
@param FatSize The size of the string Fat in bytes.
@param Fat A pointer to a Null-terminated string that contains
an 8.3 file name using an OEM character set.
@param Str A pointer to a Null-terminated Unicode string. The
string must be allocated in advance to hold FatSize
Unicode characters
**/
VOID
EngFatToStr (
IN UINTN FatSize,
IN CHAR8 *Fat,
OUT CHAR16 *Str
);
/**
Performs a case-insensitive comparison of two Null-terminated Unicode strings.
@param PrivateData Global memory map for accessing global variables
@param Str1 First string to perform case insensitive comparison.
@param Str2 Second string to perform case insensitive comparison.
**/
BOOLEAN
EngStriColl (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN CHAR16 *Str1,
IN CHAR16 *Str2
);
/**
Reads a block of data from the block device by calling
underlying Block I/O service.
@param PrivateData Global memory map for accessing global variables
@param BlockDeviceNo The index for the block device number.
@param Lba The logic block address to read data from.
@param BufferSize The size of data in byte to read.
@param Buffer The buffer of the
@retval EFI_DEVICE_ERROR The specified block device number exceeds the maximum
device number.
@retval EFI_DEVICE_ERROR The maximum address has exceeded the maximum address
of the block device.
**/
EFI_STATUS
FatReadBlock (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN UINTN BlockDeviceNo,
IN EFI_PEI_LBA Lba,
IN UINTN BufferSize,
OUT VOID *Buffer
);
/**
Check if there is a valid FAT in the corresponding Block device
of the volume and if yes, fill in the relevant fields for the
volume structure. Note there should be a valid Block device number
already set.
@param PrivateData Global memory map for accessing global
variables.
@param Volume On input, the BlockDeviceNumber field of the
Volume should be a valid value. On successful
output, all fields except the VolumeNumber
field is initialized.
@retval EFI_SUCCESS A FAT is found and the volume structure is
initialized.
@retval EFI_NOT_FOUND There is no FAT on the corresponding device.
@retval EFI_DEVICE_ERROR There is something error while accessing device.
**/
EFI_STATUS
FatGetBpbInfo (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN OUT PEI_FAT_VOLUME *Volume
);
/**
Gets the next cluster in the cluster chain.
@param PrivateData Global memory map for accessing global variables
@param Volume The volume
@param Cluster The cluster
@param NextCluster The cluster number of the next cluster
@retval EFI_SUCCESS The address is got
@retval EFI_INVALID_PARAMETER ClusterNo exceeds the MaxCluster of the volume.
@retval EFI_DEVICE_ERROR Read disk error
**/
EFI_STATUS
FatGetNextCluster (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN PEI_FAT_VOLUME *Volume,
IN UINT32 Cluster,
OUT UINT32 *NextCluster
);
/**
Disk reading.
@param PrivateData the global memory map;
@param BlockDeviceNo the block device to read;
@param StartingAddress the starting address.
@param Size the amount of data to read.
@param Buffer the buffer holding the data
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_DEVICE_ERROR Something error.
**/
EFI_STATUS
FatReadDisk (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN UINTN BlockDeviceNo,
IN UINT64 StartingAddress,
IN UINTN Size,
OUT VOID *Buffer
);
/**
Set a file's CurrentPos and CurrentCluster, then compute StraightReadAmount.
@param PrivateData the global memory map
@param File the file
@param Pos the Position which is offset from the file's
CurrentPos
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER Pos is beyond file's size.
@retval EFI_DEVICE_ERROR Something error while accessing media.
**/
EFI_STATUS
FatSetFilePos (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN PEI_FAT_FILE *File,
IN UINT32 Pos
);
/**
Reads file data. Updates the file's CurrentPos.
@param PrivateData Global memory map for accessing global variables
@param File The file.
@param Size The amount of data to read.
@param Buffer The buffer storing the data.
@retval EFI_SUCCESS The data is read.
@retval EFI_INVALID_PARAMETER File is invalid.
@retval EFI_DEVICE_ERROR Something error while accessing media.
**/
EFI_STATUS
FatReadFile (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN PEI_FAT_FILE *File,
IN UINTN Size,
OUT VOID *Buffer
);
/**
This function reads the next item in the parent directory and
initializes the output parameter SubFile (CurrentPos is initialized to 0).
The function updates the CurrentPos of the parent dir to after the item read.
If no more items were found, the function returns EFI_NOT_FOUND.
@param PrivateData Global memory map for accessing global variables
@param ParentDir The parent directory.
@param SubFile The File structure containing the sub file that
is caught.
@retval EFI_SUCCESS The next sub file is obtained.
@retval EFI_INVALID_PARAMETER The ParentDir is not a directory.
@retval EFI_NOT_FOUND No more sub file exists.
@retval EFI_DEVICE_ERROR Something error while accessing media.
**/
EFI_STATUS
FatReadNextDirectoryEntry (
IN PEI_FAT_PRIVATE_DATA *PrivateData,
IN PEI_FAT_FILE *ParentDir,
OUT PEI_FAT_FILE *SubFile
);
/**
This function finds partitions (logical devices) in physical block devices.
@param PrivateData Global memory map for accessing global variables.
**/
VOID
FatFindPartitions (
IN PEI_FAT_PRIVATE_DATA *PrivateData
);
#endif // _FAT_PEIM_H_
Reference in New Issue View Git Blame Copy Permalink