[mirror_edk2.git] / MdeModulePkg / Universal / Network / UefiPxeBcDxe / PxeBcSupport.c

/** @file\r
  Support routines for PxeBc.\r
  \r
Copyright (c) 2007 - 2009, 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
\r
#include "PxeBcImpl.h"\r
\r
\r
/**\r
  This function returns SMBIOS string given the string number.\r
  \r
  @param  Smbios              Pointer to SMBIOS structure\r
  @param  StringNumber        String number to return. 0 is used to skip all\r
                              strings and  point to the next SMBIOS structure.\r
\r
  @return Pointer to string, or pointer to next SMBIOS strcuture if StringNumber == 0\r
\r
**/\r
CHAR8 *\r
GetSmbiosString (\r
  IN  SMBIOS_STRUCTURE_POINTER  *Smbios,\r
  IN  UINT16                    StringNumber\r
  )\r
{\r
  UINT16  Index;\r
  CHAR8   *String;\r
\r
  //\r
  // Skip over formatted section\r
  //\r
  String = (CHAR8 *) (Smbios->Raw + Smbios->Hdr->Length);\r
\r
  //\r
  // Look through unformated section\r
  //\r
  for (Index = 1; Index <= StringNumber || StringNumber == 0; Index++) {\r
    if (StringNumber == Index) {\r
      return String;\r
    }\r
    //\r
    // Skip string\r
    //\r
    for (; *String != 0; String++)\r
      ;\r
    String++;\r
\r
    if (*String == 0) {\r
      //\r
      // If double NULL then we are done.\r
      //  Return pointer to next structure in Smbios.\r
      //  if you pass in a 0 you will always get here\r
      //\r
      Smbios->Raw = (UINT8 *)++String;\r
      return NULL;\r
    }\r
  }\r
\r
  return NULL;\r
}\r
\r
\r
/**\r
  This function gets system guid and serial number from the smbios table.\r
\r
  @param  SystemGuid          The pointer of returned system guid.\r
  @param  SystemSerialNumber  The pointer of returned system serial number.\r
\r
  @retval EFI_SUCCESS         Successfully get the system guid and system serial\r
                              number.\r
  @retval EFI_NOT_FOUND       Not find the SMBIOS table.\r
\r
**/\r
EFI_STATUS\r
GetSmbiosSystemGuidAndSerialNumber (\r
  IN  EFI_GUID  *SystemGuid,\r
  OUT CHAR8     **SystemSerialNumber\r
  )\r
{\r
  EFI_STATUS                Status;\r
  SMBIOS_TABLE_ENTRY_POINT  *SmbiosTable;\r
  SMBIOS_STRUCTURE_POINTER  Smbios;\r
  SMBIOS_STRUCTURE_POINTER  SmbiosEnd;\r
  UINT16                    Index;\r
\r
  Status = EfiGetSystemConfigurationTable (&gEfiSmbiosTableGuid, (VOID **) &SmbiosTable);\r
\r
  if (EFI_ERROR (Status)) {\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  Smbios.Hdr    = (SMBIOS_STRUCTURE *) (UINTN) SmbiosTable->TableAddress;\r
  SmbiosEnd.Raw = (UINT8 *) (UINTN) (SmbiosTable->TableAddress + SmbiosTable->TableLength);\r
\r
  for (Index = 0; Index < SmbiosTable->TableLength; Index++) {\r
    if (Smbios.Hdr->Type == 1) {\r
      if (Smbios.Hdr->Length < 0x19) {\r
        //\r
        // Older version did not support Guid and Serial number\r
        //\r
        continue;\r
      }\r
      //\r
      // SMBIOS tables are byte packed so we need to do a byte copy to\r
      // prevend alignment faults on Itanium-based platform.\r
      //\r
      CopyMem (SystemGuid, &Smbios.Type1->Uuid, sizeof (EFI_GUID));\r
      *SystemSerialNumber = GetSmbiosString (&Smbios, Smbios.Type1->SerialNumber);\r
\r
      return EFI_SUCCESS;\r
    }\r
    //\r
    // Make Smbios point to the next record\r
    //\r
    GetSmbiosString (&Smbios, 0);\r
\r
    if (Smbios.Raw >= SmbiosEnd.Raw) {\r
      //\r
      // SMBIOS 2.1 incorrectly stated the length of SmbiosTable as 0x1e.\r
      // given this we must double check against the length of the structure.\r
      //\r
      return EFI_SUCCESS;\r
    }\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  The common notify function associated with various PxeBc events. \r
\r
  @param  Event     The event signaled.\r
  @param  Context   The context.\r
\r
**/\r
VOID\r
EFIAPI\r
PxeBcCommonNotify (\r
  IN EFI_EVENT           Event,\r
  IN VOID                *Context\r
  )\r
{\r
  *((BOOLEAN *) Context) = TRUE;\r
}\r
\r
\r
/**\r
  This function initialize(or configure) the Udp4Write instance.\r
  \r
  @param  Udp4       Pointer to the EFI_UDP4_PROTOCOL instance.\r
  @param  StationIp  Pointer to the station ip address.\r
  @param  SubnetMask Pointer to the subnetmask of the station ip address.\r
  @param  Gateway    Pointer to the gateway ip address.\r
  @param  SrcPort    Pointer to the srouce port of the station.\r
  \r
  @retval EFI_SUCCESS           The configuration settings were set, changed, or reset successfully.\r
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,\r
                                RARP, etc.) is not finished yet.\r
  @retval EFI_INVALID_PARAMETER One or more following conditions are TRUE:\r
  @retval EFI_ALREADY_STARTED   The EFI UDPv4 Protocol instance is already started/configured\r
                                and must be stopped/reset before it can be reconfigured.\r
  @retval EFI_ACCESS_DENIED     UdpConfigData. AllowDuplicatePort is FALSE\r
                                and UdpConfigData.StationPort is already used by\r
                                other instance.\r
  @retval EFI_OUT_OF_RESOURCES  The EFI UDPv4 Protocol driver cannot allocate memory for this\r
                                EFI UDPv4 Protocol instance.\r
  @retval EFI_DEVICE_ERROR      An unexpected network or system error occurred and this instance\r
                                was not opened.\r
  @retval Others                Please examine the function Udp4->Routes(Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway) returns.\r
  \r
**/\r
EFI_STATUS\r
PxeBcConfigureUdpWriteInstance (\r
  IN EFI_UDP4_PROTOCOL  *Udp4,\r
  IN EFI_IPv4_ADDRESS   *StationIp,\r
  IN EFI_IPv4_ADDRESS   *SubnetMask,\r
  IN EFI_IPv4_ADDRESS   *Gateway,\r
  IN OUT UINT16         *SrcPort\r
  )\r
{\r
  EFI_UDP4_CONFIG_DATA  Udp4CfgData;\r
  EFI_STATUS            Status;\r
\r
  ZeroMem (&Udp4CfgData, sizeof (Udp4CfgData));\r
\r
  Udp4CfgData.ReceiveTimeout = 1000;\r
  Udp4CfgData.TypeOfService  = DEFAULT_ToS;\r
  Udp4CfgData.TimeToLive     = DEFAULT_TTL;\r
  Udp4CfgData.AllowDuplicatePort = TRUE;\r
\r
  CopyMem (&Udp4CfgData.StationAddress, StationIp, sizeof (*StationIp));\r
  CopyMem (&Udp4CfgData.SubnetMask, SubnetMask, sizeof (*SubnetMask));\r
\r
  Udp4CfgData.StationPort    = *SrcPort;\r
\r
  //\r
  // Reset the instance.\r
  //\r
  Udp4->Configure (Udp4, NULL);\r
\r
  Status = Udp4->Configure (Udp4, &Udp4CfgData);\r
  if (!EFI_ERROR (Status) && (Gateway->Addr[0] != 0)) {\r
    //\r
    // basic configuration OK, need to add the default route entry\r
    //\r
    Status = Udp4->Routes (Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway);\r
    if (EFI_ERROR (Status)) {\r
      //\r
      // roll back\r
      //\r
      Udp4->Configure (Udp4, NULL);\r
    }\r
  }\r
\r
  if (!EFI_ERROR (Status) && (*SrcPort == 0)) {\r
    Udp4->GetModeData (Udp4, &Udp4CfgData, NULL, NULL, NULL);\r
    *SrcPort = Udp4CfgData.StationPort;\r
  }\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Convert number to ASCII value.\r
\r
  @param  Number              Numeric value to convert to decimal ASCII value.\r
  @param  Buffer              Buffer to place ASCII version of the Number.\r
  @param  Length              Length of Buffer.\r
\r
**/\r
VOID\r
CvtNum (\r
  IN UINTN  Number,\r
  IN UINT8  *Buffer,\r
  IN UINTN   Length\r
  )\r
{\r
  UINTN Remainder;\r
\r
  while (Length > 0) {\r
    Remainder = Number % 10;\r
    Number /= 10;\r
    Length--;\r
    Buffer[Length] = (UINT8) ('0' + Remainder);\r
  }\r
}\r
\r
\r
/**\r
  Convert unsigned int number to decimal number.\r
\r
  @param  Number   The unsigned int number will be converted.\r
  @param  Buffer   Pointer to the buffer to store the decimal number after transform.\r
\r
  @return the length of the number after transform.\r
\r
**/\r
UINTN\r
UtoA10 (\r
  IN UINTN Number,\r
  IN CHAR8 *Buffer\r
  )\r
{\r
  UINTN Index;\r
  CHAR8 TempStr[64];\r
\r
  Index           = 63;\r
  TempStr[Index]  = 0;\r
\r
  do {\r
    Index--;\r
    TempStr[Index]  = (CHAR8) ('0' + (Number % 10));\r
    Number          = Number / 10;\r
  } while (Number != 0);\r
\r
  AsciiStrCpy (Buffer, &TempStr[Index]);\r
\r
  return AsciiStrLen (Buffer);\r
}\r
\r
\r
/**\r
  Convert ASCII numeric string to a UINTN value.\r
\r
  @param  Buffer  Pointer to the 8-byte unsigned int value.\r
\r
  @return UINTN value of the ASCII string.\r
\r
**/\r
UINT64\r
AtoU64 (\r
  IN UINT8 *Buffer\r
  )\r
{\r
  UINT64  Value;\r
  UINT8   Character;\r
\r
  Value = 0;\r
  while ((Character = *Buffer++) != '\0') {\r
    Value = MultU64x32 (Value, 10) + (Character - '0');\r
  }\r
\r
  return Value;\r
}\r
\r
Commit	Line	Data
dc361cc5	1	/** @file\r
f737cfb9	2	Support routines for PxeBc.\r
f737cfb9	3	\r
6d3ea23f	4	Copyright (c) 2007 - 2009, Intel Corporation.<BR> \r
dc361cc5	5	All rights reserved. This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
dc361cc5	13	**/\r
	14	\r
	15	\r
	16	#include "PxeBcImpl.h"\r
	17	\r
	18	\r
	19	/**\r
f737cfb9	20	This function returns SMBIOS string given the string number.\r
f737cfb9	21	\r
dc361cc5	22	@param Smbios Pointer to SMBIOS structure\r
	23	@param StringNumber String number to return. 0 is used to skip all\r
	24	strings and point to the next SMBIOS structure.\r
	25	\r
	26	@return Pointer to string, or pointer to next SMBIOS strcuture if StringNumber == 0\r
	27	\r
	28	**/\r
dc361cc5	29	CHAR8 *\r
	30	GetSmbiosString (\r
	31	IN SMBIOS_STRUCTURE_POINTER *Smbios,\r
	32	IN UINT16 StringNumber\r
	33	)\r
	34	{\r
	35	UINT16 Index;\r
	36	CHAR8 *String;\r
	37	\r
	38	//\r
	39	// Skip over formatted section\r
	40	//\r
	41	String = (CHAR8 *) (Smbios->Raw + Smbios->Hdr->Length);\r
	42	\r
	43	//\r
	44	// Look through unformated section\r
	45	//\r
	46	for (Index = 1; Index <= StringNumber \|\| StringNumber == 0; Index++) {\r
	47	if (StringNumber == Index) {\r
	48	return String;\r
	49	}\r
	50	//\r
	51	// Skip string\r
	52	//\r
	53	for (; *String != 0; String++)\r
	54	;\r
	55	String++;\r
	56	\r
	57	if (*String == 0) {\r
	58	//\r
	59	// If double NULL then we are done.\r
	60	// Return pointer to next structure in Smbios.\r
	61	// if you pass in a 0 you will always get here\r
	62	//\r
	63	Smbios->Raw = (UINT8 *)++String;\r
	64	return NULL;\r
	65	}\r
	66	}\r
	67	\r
	68	return NULL;\r
	69	}\r
	70	\r
	71	\r
	72	/**\r
f737cfb9	73	This function gets system guid and serial number from the smbios table.\r
dc361cc5	74	\r
f737cfb9	75	@param SystemGuid The pointer of returned system guid.\r
f737cfb9	76	@param SystemSerialNumber The pointer of returned system serial number.\r
dc361cc5	77	\r
dc361cc5	78	@retval EFI_SUCCESS Successfully get the system guid and system serial\r
f737cfb9	79	number.\r
f737cfb9	80	@retval EFI_NOT_FOUND Not find the SMBIOS table.\r
dc361cc5	81	\r
	82	**/\r
	83	EFI_STATUS\r
	84	GetSmbiosSystemGuidAndSerialNumber (\r
	85	IN EFI_GUID *SystemGuid,\r
	86	OUT CHAR8 **SystemSerialNumber\r
	87	)\r
	88	{\r
	89	EFI_STATUS Status;\r
	90	SMBIOS_TABLE_ENTRY_POINT *SmbiosTable;\r
	91	SMBIOS_STRUCTURE_POINTER Smbios;\r
	92	SMBIOS_STRUCTURE_POINTER SmbiosEnd;\r
	93	UINT16 Index;\r
	94	\r
	95	Status = EfiGetSystemConfigurationTable (&gEfiSmbiosTableGuid, (VOID **) &SmbiosTable);\r
	96	\r
	97	if (EFI_ERROR (Status)) {\r
	98	return EFI_NOT_FOUND;\r
	99	}\r
	100	\r
	101	Smbios.Hdr = (SMBIOS_STRUCTURE *) (UINTN) SmbiosTable->TableAddress;\r
	102	SmbiosEnd.Raw = (UINT8 *) (UINTN) (SmbiosTable->TableAddress + SmbiosTable->TableLength);\r
	103	\r
	104	for (Index = 0; Index < SmbiosTable->TableLength; Index++) {\r
	105	if (Smbios.Hdr->Type == 1) {\r
	106	if (Smbios.Hdr->Length < 0x19) {\r
	107	//\r
	108	// Older version did not support Guid and Serial number\r
	109	//\r
	110	continue;\r
	111	}\r
	112	//\r
	113	// SMBIOS tables are byte packed so we need to do a byte copy to\r
	114	// prevend alignment faults on Itanium-based platform.\r
	115	//\r
	116	CopyMem (SystemGuid, &Smbios.Type1->Uuid, sizeof (EFI_GUID));\r
	117	*SystemSerialNumber = GetSmbiosString (&Smbios, Smbios.Type1->SerialNumber);\r
	118	\r
	119	return EFI_SUCCESS;\r
	120	}\r
	121	//\r
	122	// Make Smbios point to the next record\r
	123	//\r
	124	GetSmbiosString (&Smbios, 0);\r
	125	\r
	126	if (Smbios.Raw >= SmbiosEnd.Raw) {\r
	127	//\r
	128	// SMBIOS 2.1 incorrectly stated the length of SmbiosTable as 0x1e.\r
	129	// given this we must double check against the length of the structure.\r
	130	//\r
	131	return EFI_SUCCESS;\r
	132	}\r
	133	}\r
	134	\r
	135	return EFI_SUCCESS;\r
	136	}\r
	137	\r
	138	\r
	139	/**\r
f737cfb9	140	The common notify function associated with various PxeBc events. \r
dc361cc5	141	\r
f737cfb9	142	@param Event The event signaled.\r
f737cfb9	143	@param Context The context.\r
dc361cc5	144	\r
dc361cc5	145	**/\r
dc361cc5	146	VOID\r
6d3ea23f	147	EFIAPI\r
dc361cc5	148	PxeBcCommonNotify (\r
	149	IN EFI_EVENT Event,\r
	150	IN VOID *Context\r
	151	)\r
	152	{\r
	153	((BOOLEAN ) Context) = TRUE;\r
	154	}\r
	155	\r
f737cfb9	156	\r
	157	/**\r
	158	This function initialize(or configure) the Udp4Write instance.\r
	159	\r
	160	@param Udp4 Pointer to the EFI_UDP4_PROTOCOL instance.\r
	161	@param StationIp Pointer to the station ip address.\r
	162	@param SubnetMask Pointer to the subnetmask of the station ip address.\r
	163	@param Gateway Pointer to the gateway ip address.\r
	164	@param SrcPort Pointer to the srouce port of the station.\r
	165	\r
	166	@retval EFI_SUCCESS The configuration settings were set, changed, or reset successfully.\r
	167	@retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP,\r
	168	RARP, etc.) is not finished yet.\r
	169	@retval EFI_INVALID_PARAMETER One or more following conditions are TRUE:\r
	170	@retval EFI_ALREADY_STARTED The EFI UDPv4 Protocol instance is already started/configured\r
	171	and must be stopped/reset before it can be reconfigured.\r
	172	@retval EFI_ACCESS_DENIED UdpConfigData. AllowDuplicatePort is FALSE\r
	173	and UdpConfigData.StationPort is already used by\r
	174	other instance.\r
	175	@retval EFI_OUT_OF_RESOURCES The EFI UDPv4 Protocol driver cannot allocate memory for this\r
	176	EFI UDPv4 Protocol instance.\r
	177	@retval EFI_DEVICE_ERROR An unexpected network or system error occurred and this instance\r
	178	was not opened.\r
	179	@retval Others Please examine the function Udp4->Routes(Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway) returns.\r
	180	\r
	181	**/\r
8792362f	182	EFI_STATUS\r
	183	PxeBcConfigureUdpWriteInstance (\r
	184	IN EFI_UDP4_PROTOCOL *Udp4,\r
	185	IN EFI_IPv4_ADDRESS *StationIp,\r
	186	IN EFI_IPv4_ADDRESS *SubnetMask,\r
	187	IN EFI_IPv4_ADDRESS *Gateway,\r
	188	IN OUT UINT16 *SrcPort\r
	189	)\r
	190	{\r
	191	EFI_UDP4_CONFIG_DATA Udp4CfgData;\r
	192	EFI_STATUS Status;\r
	193	\r
	194	ZeroMem (&Udp4CfgData, sizeof (Udp4CfgData));\r
	195	\r
	196	Udp4CfgData.ReceiveTimeout = 1000;\r
	197	Udp4CfgData.TypeOfService = DEFAULT_ToS;\r
	198	Udp4CfgData.TimeToLive = DEFAULT_TTL;\r
319075ff	199	Udp4CfgData.AllowDuplicatePort = TRUE;\r
8792362f	200	\r
	201	CopyMem (&Udp4CfgData.StationAddress, StationIp, sizeof (*StationIp));\r
	202	CopyMem (&Udp4CfgData.SubnetMask, SubnetMask, sizeof (*SubnetMask));\r
	203	\r
	204	Udp4CfgData.StationPort = *SrcPort;\r
	205	\r
	206	//\r
	207	// Reset the instance.\r
	208	//\r
	209	Udp4->Configure (Udp4, NULL);\r
	210	\r
	211	Status = Udp4->Configure (Udp4, &Udp4CfgData);\r
	212	if (!EFI_ERROR (Status) && (Gateway->Addr[0] != 0)) {\r
	213	//\r
	214	// basic configuration OK, need to add the default route entry\r
	215	//\r
	216	Status = Udp4->Routes (Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway);\r
	217	if (EFI_ERROR (Status)) {\r
	218	//\r
	219	// roll back\r
	220	//\r
	221	Udp4->Configure (Udp4, NULL);\r
	222	}\r
	223	}\r
	224	\r
	225	if (!EFI_ERROR (Status) && (*SrcPort == 0)) {\r
	226	Udp4->GetModeData (Udp4, &Udp4CfgData, NULL, NULL, NULL);\r
	227	*SrcPort = Udp4CfgData.StationPort;\r
	228	}\r
	229	\r
	230	return Status;\r
	231	}\r
	232	\r
dc361cc5	233	\r
dc361cc5	234	/**\r
f737cfb9	235	Convert number to ASCII value.\r
dc361cc5	236	\r
dc361cc5	237	@param Number Numeric value to convert to decimal ASCII value.\r
f737cfb9	238	@param Buffer Buffer to place ASCII version of the Number.\r
dc361cc5	239	@param Length Length of Buffer.\r
dc361cc5	240	\r
dc361cc5	241	**/\r
	242	VOID\r
	243	CvtNum (\r
	244	IN UINTN Number,\r
	245	IN UINT8 *Buffer,\r
f737cfb9	246	IN UINTN Length\r
dc361cc5	247	)\r
	248	{\r
	249	UINTN Remainder;\r
	250	\r
894d038a	251	while (Length > 0) {\r
dc361cc5	252	Remainder = Number % 10;\r
dc361cc5	253	Number /= 10;\r
894d038a	254	Length--;\r
dc361cc5	255	Buffer[Length] = (UINT8) ('0' + Remainder);\r
	256	}\r
	257	}\r
	258	\r
	259	\r
	260	/**\r
f737cfb9	261	Convert unsigned int number to decimal number.\r
dc361cc5	262	\r
f737cfb9	263	@param Number The unsigned int number will be converted.\r
f737cfb9	264	@param Buffer Pointer to the buffer to store the decimal number after transform.\r
dc361cc5	265	\r
f737cfb9	266	@return the length of the number after transform.\r
dc361cc5	267	\r
	268	**/\r
	269	UINTN\r
	270	UtoA10 (\r
	271	IN UINTN Number,\r
	272	IN CHAR8 *Buffer\r
	273	)\r
	274	{\r
	275	UINTN Index;\r
	276	CHAR8 TempStr[64];\r
	277	\r
	278	Index = 63;\r
	279	TempStr[Index] = 0;\r
	280	\r
	281	do {\r
	282	Index--;\r
	283	TempStr[Index] = (CHAR8) ('0' + (Number % 10));\r
	284	Number = Number / 10;\r
	285	} while (Number != 0);\r
	286	\r
	287	AsciiStrCpy (Buffer, &TempStr[Index]);\r
	288	\r
	289	return AsciiStrLen (Buffer);\r
	290	}\r
	291	\r
	292	\r
	293	/**\r
f737cfb9	294	Convert ASCII numeric string to a UINTN value.\r
dc361cc5	295	\r
f737cfb9	296	@param Buffer Pointer to the 8-byte unsigned int value.\r
dc361cc5	297	\r
f737cfb9	298	@return UINTN value of the ASCII string.\r
dc361cc5	299	\r
	300	**/\r
	301	UINT64\r
	302	AtoU64 (\r
	303	IN UINT8 *Buffer\r
	304	)\r
	305	{\r
	306	UINT64 Value;\r
	307	UINT8 Character;\r
	308	\r
	309	Value = 0;\r
	310	while ((Character = *Buffer++) != '\0') {\r
	311	Value = MultU64x32 (Value, 10) + (Character - '0');\r
	312	}\r
	313	\r
	314	return Value;\r
	315	}\r
	316	\r