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authorraywu <raywu0301@gmail.com>2018-06-15 00:00:50 +0800
committerraywu <raywu0301@gmail.com>2018-06-15 00:00:50 +0800
commitb7c51c9cf4864df6aabb99a1ae843becd577237c (patch)
treeeebe9b0d0ca03062955223097e57da84dd618b9a /Core/EfiCommonLib.h
downloadzprj-b7c51c9cf4864df6aabb99a1ae843becd577237c.tar.xz
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+/*++
+
+Copyright (c) 2004 - 2006, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ EfiCommonLib.h
+
+Abstract:
+
+ Light weight lib to support EFI drivers.
+
+--*/
+
+#ifndef _EFI_COMMON_LIB_H_
+#define _EFI_COMMON_LIB_H_
+
+EFI_STATUS
+EfiLibGetSystemConfigurationTable (
+ IN EFI_GUID *TableGuid,
+ IN OUT VOID **Table
+ )
+/*++
+
+Routine Description:
+
+ Return the EFI 1.0 System Tabl entry with TableGuid
+
+Arguments:
+
+ TableGuid - Name of entry to return in the system table
+ Table - Pointer in EFI system table associated with TableGuid
+
+Returns:
+
+ EFI_SUCCESS - Table returned;
+ EFI_NOT_FOUND - TableGuid not in EFI system table
+
+--*/
+;
+
+//
+// ASPrint and AvSPrint definitions you must include the specific library
+// to get the expected behavior from the two functions
+// PEI: PeiLib
+// Graphics: Dxe\Graphics\Unicode Dxe\Graphics\ASCII
+// ASCII: Dxe\Print\ASCII
+// Unicode: Dxe\Print\Unicode
+//
+UINTN
+ASPrint (
+ OUT CHAR8 *Buffer,
+ IN UINTN BufferSize,
+ IN CONST CHAR8 *Format,
+ ...
+ )
+/*++
+
+Routine Description:
+
+ Process format and place the results in Buffer for narrow chars.
+
+Arguments:
+
+ Buffer - Narrow char buffer to print the results of the parsing of Format into.
+ BufferSize - Maximum number of characters to put into buffer.
+ Format - Format string
+ ... - Vararg list consumed by processing Format.
+
+Returns:
+
+ Number of characters printed.
+
+--*/
+;
+
+UINTN
+AvSPrint (
+ OUT CHAR8 *StartOfBuffer,
+ IN UINTN StrSize,
+ IN CONST CHAR8 *Format,
+ IN VA_LIST Marker
+ )
+/*++
+
+Routine Description:
+
+ Internal implementation of ASPrint.
+ Process format and place the results in Buffer for narrow chars.
+
+Arguments:
+
+ StartOfBuffer - Narrow char buffer to print the results of the parsing of Format into.
+ StrSize - Maximum number of characters to put into buffer.
+ FormatString - Format string
+ Marker - Vararg list consumed by processing Format.
+
+Returns:
+
+ Number of characters printed.
+
+--*/
+;
+
+//
+// Lib functions which can be used in both PEI and DXE pahse
+//
+EFI_STATUS
+EfiInitializeCommonDriverLib (
+ IN EFI_HANDLE ImageHandle,
+ IN VOID *SystemTable
+ )
+/*++
+
+Routine Description:
+
+ Initialize lib function calling phase: PEI or DXE
+
+Arguments:
+
+ ImageHandle - The firmware allocated handle for the EFI image.
+
+ SystemTable - A pointer to the EFI System Table.
+
+Returns:
+
+ EFI_STATUS always returns EFI_SUCCESS
+
+--*/
+;
+
+EFI_STATUS
+EfiCommonIoRead (
+ IN UINT8 Width,
+ IN UINTN Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+/*++
+
+Routine Description:
+
+ Io read operation.
+
+Arguments:
+
+ Width - Width of read operation
+ Address - Start IO address to read
+ Count - Read count
+ Buffer - Buffer to store result
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+EFI_STATUS
+EfiCommonIoWrite (
+ IN UINT8 Width,
+ IN UINTN Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+/*++
+
+Routine Description:
+
+ Io write operation.
+
+Arguments:
+
+ Width - Width of write operation
+ Address - Start IO address to write
+ Count - Write count
+ Buffer - Buffer to write to the address
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+EFI_STATUS
+EfiCommonPciRead (
+ IN UINT8 Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+/*++
+
+Routine Description:
+
+ Pci read operation
+
+Arguments:
+
+ Width - Width of PCI read
+ Address - PCI address to read
+ Count - Read count
+ Buffer - Output buffer for the read
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+EFI_STATUS
+EfiCommonPciWrite (
+ IN UINT8 Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+/*++
+
+Routine Description:
+
+ Pci write operation
+
+Arguments:
+
+ Width - Width of PCI write
+ Address - PCI address to write
+ Count - Write count
+ Buffer - Buffer to write to the address
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+BOOLEAN
+EfiCompareGuid (
+ IN EFI_GUID *Guid1,
+ IN EFI_GUID *Guid2
+ )
+/*++
+
+Routine Description:
+
+ Compares two GUIDs
+
+Arguments:
+
+ Guid1 - guid to compare
+
+ Guid2 - guid to compare
+
+Returns:
+ TRUE if Guid1 == Guid2
+ FALSE if Guid1 != Guid2
+
+--*/
+;
+
+VOID
+EfiCommonLibSetMem (
+ IN VOID *Buffer,
+ IN UINTN Size,
+ IN UINT8 Value
+ )
+/*++
+
+Routine Description:
+
+ Set Buffer to Value for Size bytes.
+
+Arguments:
+
+ Buffer - Memory to set.
+
+ Size - Number of bytes to set
+
+ Value - Value of the set operation.
+
+Returns:
+
+ None
+
+--*/
+;
+
+VOID
+EfiCommonLibCopyMem (
+ IN VOID *Destination,
+ IN VOID *Source,
+ IN UINTN Length
+ )
+/*++
+
+Routine Description:
+
+ Copy Length bytes from Source to Destination.
+
+Arguments:
+
+ Destination - Target of copy
+
+ Source - Place to copy from
+
+ Length - Number of bytes to copy
+
+Returns:
+
+ None
+
+--*/
+;
+
+INTN
+EfiCompareMem (
+ IN VOID *MemOne,
+ IN VOID *MemTwo,
+ IN UINTN Len
+ )
+/*++
+
+Routine Description:
+
+ Compares two memory buffers of a given length.
+
+Arguments:
+
+ MemOne - First memory buffer
+
+ MemTwo - Second memory buffer
+
+ Len - Length of Mem1 and Mem2 memory regions to compare
+
+Returns:
+
+ = 0 if MemOne == MemTwo
+
+ > 0 if MemOne > MemTwo
+
+ < 0 if MemOne < MemTwo
+
+--*/
+;
+
+VOID
+EfiCommonLibZeroMem (
+ IN VOID *Buffer,
+ IN UINTN Size
+ )
+/*++
+
+Routine Description:
+
+ Set Buffer to 0 for Size bytes.
+
+Arguments:
+
+ Buffer - Memory to set.
+
+ Size - Number of bytes to set
+
+Returns:
+
+ None
+
+--*/
+;
+
+//
+// Min Max
+//
+#define EFI_MIN(a, b) (((a) < (b)) ? (a) : (b))
+#define EFI_MAX(a, b) (((a) > (b)) ? (a) : (b))
+
+//
+// Align a pointer. The pointer represented by ptr is aligned to the bound.
+// The resulting pointer is always equal or greater (by no more than bound-1)
+// than the ptr. I.e., if the ptr is already aligned, the result will be equal to ptr.
+// Valid values for bound are powers of two: 2, 4, 8, 16, 32 etc.
+// The returned pointer is VOID* this assignment-compatible with all pointer types.
+//
+#define EFI_ALIGN(ptr, bound) ((VOID *) (((UINTN) (ptr) + ((UINTN) (bound) - 1)) &~((UINTN) (bound) - 1)))
+
+//
+// Alignment tests.
+//
+#define EFI_UINTN_ALIGN_MASK (sizeof (UINTN) - 1)
+#define EFI_UINTN_ALIGNED(ptr) (((UINTN) (ptr)) & EFI_UINTN_ALIGN_MASK)
+
+//
+// Integer division with rounding to the nearest rather than truncating.
+// For example 8/3=2 but EFI_IDIV_ROUND(8,3)=3. 1/3=0 and EFI_IDIV_ROUND(1,3)=0.
+// A half is rounded up e.g., EFI_IDIV_ROUND(1,2)=1 but 1/2=0.
+//
+#define EFI_IDIV_ROUND(r, s) ((r) / (s) + (((2 * ((r) % (s))) < (s)) ? 0 : 1))
+
+//
+// ReportStatusCode.c init
+//
+VOID *
+EfiConstructStatusCodeData (
+ IN UINT16 DataSize,
+ IN EFI_GUID *TypeGuid,
+ IN OUT EFI_STATUS_CODE_DATA *Data
+ )
+/*++
+
+Routine Description:
+
+ Construct stanader header for optional data passed into ReportStatusCode
+
+Arguments:
+
+ DataSize - Size of optional data. Does not include EFI_STATUS_CODE_DATA header
+ TypeGuid - GUID to place in EFI_STATUS_CODE_DATA
+ Data - Buffer to use.
+
+Returns:
+
+ Return pointer to Data buffer pointing past the end of EFI_STATUS_CODE_DATA
+
+--*/
+;
+
+EFI_STATUS
+EfiDebugVPrintWorker (
+ IN UINTN ErrorLevel,
+ IN CHAR8 *Format,
+ IN VA_LIST Marker,
+ IN UINTN BufferSize,
+ IN OUT VOID *Buffer
+ )
+/*++
+
+Routine Description:
+
+ Worker function for DEBUG(). If Error Logging hub is loaded log ASSERT
+ information. If Error Logging hub is not loaded do nothing.
+
+ We use UINT64 buffers due to IPF alignment concerns.
+
+Arguments:
+
+ ErrorLevel - If error level is set do the debug print.
+
+ Format - String to use for the print, followed by Print arguments.
+
+ Marker - VarArgs
+
+ BufferSize - Size of Buffer.
+
+ Buffer - Caller allocated buffer, contains ReportStatusCode extended data
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+EFI_STATUS
+EfiDebugAssertWorker (
+ IN CHAR8 *FileName,
+ IN INTN LineNumber,
+ IN CHAR8 *Description,
+ IN UINTN BufferSize,
+ IN OUT VOID *Buffer
+ )
+/*++
+
+Routine Description:
+
+ Worker function for ASSERT (). If Error Logging hub is loaded log ASSERT
+ information. If Error Logging hub is not loaded DEADLOOP ().
+
+ We use UINT64 buffers due to IPF alignment concerns.
+
+Arguments:
+
+ FileName - File name of failing routine.
+
+ LineNumber - Line number of failing ASSERT().
+
+ Description - Description, usually the assertion,
+
+ BufferSize - Size of Buffer.
+
+ Buffer - Caller allocated buffer, contains ReportStatusCode extendecd data
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+BOOLEAN
+ReportStatusCodeExtractAssertInfo (
+ IN EFI_STATUS_CODE_TYPE CodeType,
+ IN EFI_STATUS_CODE_VALUE Value,
+ IN EFI_STATUS_CODE_DATA *Data,
+ OUT CHAR8 **Filename,
+ OUT CHAR8 **Description,
+ OUT UINT32 *LineNumber
+ )
+/*++
+
+Routine Description:
+
+ Extract assert information from status code data.
+
+Arguments:
+
+ CodeType - Code type
+ Value - Code value
+ Data - Optional data associated with this status code.
+ Filename - Filename extracted from Data
+ Description - Description extracted from Data
+ LineNumber - Line number extracted from Data
+
+Returns:
+
+ TRUE - Successfully extracted
+
+ FALSE - Extraction failed
+
+--*/
+;
+
+BOOLEAN
+ReportStatusCodeExtractDebugInfo (
+ IN EFI_STATUS_CODE_DATA *Data,
+ OUT UINT32 *ErrorLevel,
+ OUT VA_LIST *Marker,
+ OUT CHAR8 **Format
+ )
+/*++
+
+Routine Description:
+
+ Extract debug information from status code data.
+
+Arguments:
+
+ Data - Optional data associated with status code.
+ ErrorLevel - Error level extracted from Data
+ Marker - VA_LIST extracted from Data
+ Format - Format string extracted from Data
+
+Returns:
+
+ TRUE - Successfully extracted
+
+ FALSE - Extraction failed
+
+--*/
+;
+
+BOOLEAN
+CodeTypeToPostCode (
+ IN EFI_STATUS_CODE_TYPE CodeType,
+ IN EFI_STATUS_CODE_VALUE Value,
+ OUT UINT8 *PostCode
+ )
+/*++
+
+Routine Description:
+
+ Convert code value to an 8 bit post code
+
+Arguments:
+
+ CodeType - Code type
+ Value - Code value
+ PostCode - Post code as output
+
+Returns:
+
+ TRUE - Successfully converted
+
+ FALSE - Convertion failed
+
+--*/
+;
+
+//
+// math.c
+//
+UINT64
+MultU64x32 (
+ IN UINT64 Multiplicand,
+ IN UINTN Multiplier
+ )
+/*++
+
+Routine Description:
+
+ This routine allows a 64 bit value to be multiplied with a 32 bit
+ value returns 64bit result.
+ No checking if the result is greater than 64bits
+
+Arguments:
+
+ Multiplicand - multiplicand
+ Multiplier - multiplier
+
+Returns:
+
+ Multiplicand * Multiplier
+
+--*/
+;
+
+UINT64
+DivU64x32 (
+ IN UINT64 Dividend,
+ IN UINTN Divisor,
+ OUT UINTN *Remainder OPTIONAL
+ )
+/*++
+
+Routine Description:
+
+ This routine allows a 64 bit value to be divided with a 32 bit value returns
+ 64bit result and the Remainder.
+
+Arguments:
+
+ Dividend - dividend
+ Divisor - divisor
+ Remainder - buffer for remainder
+
+Returns:
+
+ Dividend / Divisor
+ Remainder = Dividend mod Divisor
+
+--*/
+;
+
+UINT64
+RShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ )
+/*++
+
+Routine Description:
+
+ This routine allows a 64 bit value to be right shifted by 32 bits and returns the
+ shifted value.
+ Count is valid up 63. (Only Bits 0-5 is valid for Count)
+
+Arguments:
+
+ Operand - Value to be shifted
+ Count - Number of times to shift right.
+
+Returns:
+
+ Value shifted right identified by the Count.
+
+--*/
+;
+
+UINT64
+LShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ )
+/*++
+
+Routine Description:
+
+ This routine allows a 64 bit value to be left shifted by 32 bits and
+ returns the shifted value.
+ Count is valid up 63. (Only Bits 0-5 is valid for Count)
+
+Arguments:
+
+ Operand - Value to be shifted
+ Count - Number of times to shift left.
+
+Returns:
+
+ Value shifted left identified by the Count.
+
+--*/
+;
+
+UINT64
+Power10U64 (
+ IN UINT64 Operand,
+ IN UINTN Power
+ )
+/*++
+
+Routine Description:
+
+ Raise 10 to the power of Power, and multiply the result with Operand
+
+Arguments:
+
+ Operand - multiplicand
+ Power - power
+
+Returns:
+
+ Operand * 10 ^ Power
+
+--*/
+;
+
+UINT8
+Log2 (
+ IN UINT64 Operand
+ )
+/*++
+
+Routine Description:
+
+ Calculates and floors logarithms based on 2
+
+Arguments:
+
+ Operand - value to calculate logarithm
+
+Returns:
+
+ The largest integer that is less than or equal
+ to the logarithm of Operand based on 2
+
+--*/
+;
+
+UINT64
+GetPowerOfTwo (
+ IN UINT64 Input
+ )
+/*++
+
+Routine Description:
+
+ Calculates the largest integer that is both
+ a power of two and less than Input
+
+Arguments:
+
+ Input - value to calculate power of two
+
+Returns:
+
+ the largest integer that is both a power of
+ two and less than Input
+
+--*/
+;
+
+//
+// Unicode String primatives
+//
+VOID
+EfiStrCpy (
+ IN CHAR16 *Destination,
+ IN CHAR16 *Source
+ )
+/*++
+
+Routine Description:
+ Copy the Unicode string Source to Destination.
+
+Arguments:
+ Destination - Location to copy string
+ Source - String to copy
+
+Returns:
+ NONE
+
+--*/
+;
+
+UINTN
+EfiStrLen (
+ IN CHAR16 *String
+ )
+/*++
+
+Routine Description:
+ Return the number of Unicode characters in String. This is not the same as
+ the length of the string in bytes.
+
+Arguments:
+ String - String to process
+
+Returns:
+ Number of Unicode characters in String
+
+--*/
+;
+
+UINTN
+EfiStrSize (
+ IN CHAR16 *String
+ )
+/*++
+
+Routine Description:
+ Return the number bytes in the Unicode String. This is not the same as
+ the length of the string in characters. The string size includes the NULL
+
+Arguments:
+ String - String to process
+
+Returns:
+ Number of bytes in String
+
+--*/
+;
+
+INTN
+EfiStrCmp (
+ IN CHAR16 *String,
+ IN CHAR16 *String2
+ )
+/*++
+
+Routine Description:
+ Return the alphabetic relationship between two stirngs.
+
+Arguments:
+ String - Compare to String2
+
+ String2 - Compare to String
+
+Returns:
+ 0 - Identical
+
+ > 0 - String is alphabeticly greater than String2
+
+ < 0 - String is alphabeticly less than String2
+
+--*/
+;
+
+VOID
+EfiStrCat (
+ IN CHAR16 *Destination,
+ IN CHAR16 *Source
+ )
+/*++
+
+Routine Description:
+ Concatinate Source on the end of Destination
+
+Arguments:
+ Destination - String to added to the end of.
+ Source - String to concatinate.
+
+Returns:
+ NONE
+
+--*/
+;
+
+UINTN
+EfiAsciiStrLen (
+ IN CHAR8 *String
+ )
+/*++
+
+Routine Description:
+ Return the number of Ascii characters in String. This is not the same as
+ the length of the string in bytes.
+
+Arguments:
+ String - String to process
+
+Returns:
+ Number of Unicode characters in String
+
+--*/
+;
+
+CHAR8 *
+EfiAsciiStrCpy (
+ IN CHAR8 *Destination,
+ IN CHAR8 *Source
+ )
+/*++
+
+Routine Description:
+ Copy the Ascii string Source to Destination.
+
+Arguments:
+ Destination - Location to copy string
+ Source - String to copy
+
+Returns:
+ Pointer just pass the end of Destination
+
+--*/
+;
+
+
+UINTN
+EfiAsciiStrSize (
+ IN CHAR8 *String
+ )
+/*++
+
+Routine Description:
+ Return the number bytes in the Ascii String. This is not the same as
+ the length of the string in characters. The string size includes the NULL
+
+Arguments:
+ String - String to process
+
+Returns:
+ Number of bytes in String
+
+--*/
+;
+
+
+INTN
+EfiAsciiStrCmp (
+ IN CHAR8 *String,
+ IN CHAR8 *String2
+ )
+/*++
+
+Routine Description:
+ Compare the Ascii string pointed by String to the string pointed by String2.
+
+Arguments:
+ String - String to process
+
+ String2 - The other string to process
+
+Returns:
+ Return a positive integer if String is lexicall greater than String2; Zero if
+ the two strings are identical; and a negative interger if String is lexically
+ less than String2.
+--*/
+;
+
+VOID
+EfiAsciiStrCat (
+ IN CHAR8 *Destination,
+ IN CHAR8 *Source
+ )
+/*++
+
+Routine Description:
+ Concatinate Source on the end of Destination
+
+Arguments:
+ Destination - String to added to the end of.
+ Source - String to concatinate.
+
+Returns:
+ NONE
+
+--*/
+;
+
+//
+// Print primitives
+//
+#define LEFT_JUSTIFY 0x01
+#define PREFIX_SIGN 0x02
+#define PREFIX_BLANK 0x04
+#define COMMA_TYPE 0x08
+#define LONG_TYPE 0x10
+#define PREFIX_ZERO 0x20
+
+//
+// Length of temp string buffer to store value string.
+//
+#define CHARACTER_NUMBER_FOR_VALUE 30
+
+UINTN
+EfiValueToHexStr (
+ IN OUT CHAR16 *Buffer,
+ IN UINT64 Value,
+ IN UINTN Flags,
+ IN UINTN Width
+ )
+/*++
+
+Routine Description:
+
+ VSPrint worker function that prints a Value as a hex number in Buffer
+
+Arguments:
+
+ Buffer - Location to place ascii hex string of Value.
+
+ Value - Hex value to convert to a string in Buffer.
+
+ Flags - Flags to use in printing Hex string, see file header for details.
+
+ Width - Width of hex value.
+
+Returns:
+
+ Number of characters printed.
+
+--*/
+;
+
+UINTN
+EfiValueToString (
+ IN OUT CHAR16 *Buffer,
+ IN INT64 Value,
+ IN UINTN Flags,
+ IN UINTN Width
+ )
+/*++
+
+Routine Description:
+
+ VSPrint worker function that prints a Value as a decimal number in Buffer
+
+Arguments:
+
+ Buffer - Location to place ascii decimal number string of Value.
+
+ Value - Decimal value to convert to a string in Buffer.
+
+ Flags - Flags to use in printing decimal string, see file header for details.
+
+ Width - Width of hex value.
+
+Returns:
+
+ Number of characters printed.
+
+--*/
+;
+
+BOOLEAN
+IsHexDigit (
+ OUT UINT8 *Digit,
+ IN CHAR16 Char
+ )
+/*++
+
+ Routine Description:
+ Determines if a Unicode character is a hexadecimal digit.
+ The test is case insensitive.
+
+ Arguments:
+ Digit - Pointer to byte that receives the value of the hex character.
+ Char - Unicode character to test.
+
+ Returns:
+ TRUE - If the character is a hexadecimal digit.
+ FALSE - Otherwise.
+
+--*/
+;
+
+CHAR16
+NibbleToHexChar (
+ UINT8 Nibble
+ )
+/*++
+
+ Routine Description:
+ Converts the low nibble of a byte to hex unicode character.
+
+ Arguments:
+ Nibble - lower nibble of a byte.
+
+ Returns:
+ Hex unicode character.
+
+--*/
+;
+
+EFI_STATUS
+HexStringToBuf (
+ IN OUT UINT8 *Buf,
+ IN OUT UINTN *Len,
+ IN CHAR16 *Str,
+ OUT UINTN *ConvertedStrLen OPTIONAL
+ )
+/*++
+
+ Routine Description:
+ Converts Unicode string to binary buffer.
+ The conversion may be partial.
+ The first character in the string that is not hex digit stops the conversion.
+ At a minimum, any blob of data could be represented as a hex string.
+
+ Arguments:
+ Buf - Pointer to buffer that receives the data.
+ Len - Length in bytes of the buffer to hold converted data.
+ If routine return with EFI_SUCCESS, containing length of converted data.
+ If routine return with EFI_BUFFER_TOO_SMALL, containg length of buffer desired.
+ Str - String to be converted from.
+ ConvertedStrLen - Length of the Hex String consumed.
+
+ Returns:
+ EFI_SUCCESS: Routine Success.
+ EFI_BUFFER_TOO_SMALL: The buffer is too small to hold converted data.
+ EFI_
+
+--*/
+;
+
+EFI_STATUS
+BufToHexString (
+ IN OUT CHAR16 *Str,
+ IN OUT UINTN *HexStringBufferLength,
+ IN UINT8 *Buf,
+ IN UINTN Len
+ )
+/*++
+
+ Routine Description:
+ Converts binary buffer to Unicode string.
+ At a minimum, any blob of data could be represented as a hex string.
+
+ Arguments:
+ Str - Pointer to the string.
+ HexStringBufferLength - Length in bytes of buffer to hold the hex string. Includes tailing '\0' character.
+ If routine return with EFI_SUCCESS, containing length of hex string buffer.
+ If routine return with EFI_BUFFER_TOO_SMALL, containg length of hex string buffer desired.
+ Buf - Buffer to be converted from.
+ Len - Length in bytes of the buffer to be converted.
+
+ Returns:
+ EFI_SUCCESS: Routine success.
+ EFI_BUFFER_TOO_SMALL: The hex string buffer is too small.
+
+--*/
+;
+
+VOID
+EfiStrTrim (
+ IN OUT CHAR16 *str,
+ IN CHAR16 CharC
+ )
+/*++
+
+Routine Description:
+
+ Removes (trims) specified leading and trailing characters from a string.
+
+Arguments:
+
+ str - Pointer to the null-terminated string to be trimmed. On return,
+ str will hold the trimmed string.
+ CharC - Character will be trimmed from str.
+
+Returns:
+
+ None
+
+--*/
+;
+CHAR16*
+EfiStrStr (
+ IN CHAR16 *String,
+ IN CHAR16 *StrCharSet
+ )
+/*++
+
+Routine Description:
+
+ Find a substring.
+
+Arguments:
+
+ String - Null-terminated string to search.
+ StrCharSet - Null-terminated string to search for.
+
+Returns:
+ The address of the first occurrence of the matching substring if successful, or NULL otherwise.
+--*/
+;
+
+CHAR8*
+EfiAsciiStrStr (
+ IN CHAR8 *String,
+ IN CHAR8 *StrCharSet
+ )
+/*++
+
+Routine Description:
+
+ Find a Ascii substring.
+
+Arguments:
+
+ String - Null-terminated Ascii string to search.
+ StrCharSet - Null-terminated Ascii string to search for.
+
+Returns:
+ The address of the first occurrence of the matching Ascii substring if successful, or NULL otherwise.
+--*/
+;
+#endif