/** @file\r
- Implementation of reading and writing operations on the NVRAM device\r
- attached to a network interface.\r
- \r
-Copyright (c) 2004 - 2009, Intel Corporation. <BR> \r
-All rights reserved. This program and the accompanying materials are licensed \r
-and made available under the terms and conditions of the BSD License which \r
-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
+ Implementation of reading and writing operations on the NVRAM device\r
+ attached to a network interface.\r
+\r
+Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;\r
Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;\r
\r
- Snp->Cdb.DBsize = sizeof (PXE_DB_NVDATA);\r
+ Snp->Cdb.DBsize = (UINT16) sizeof (PXE_DB_NVDATA);\r
Snp->Cdb.DBaddr = (UINT64)(UINTN) Db;\r
\r
Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;\r
return EFI_DEVICE_ERROR;\r
}\r
\r
- ASSERT ((Offset + BufferSize) <= sizeof (Db->Data));\r
+ ASSERT (Offset < sizeof (Db->Data));\r
\r
- CopyMem (Buffer, Db->Data.Byte + Offset, BufferSize);\r
+ CopyMem (Buffer, &Db->Data.Byte[Offset], BufferSize);\r
\r
return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
- Performs read and write operations on the NVRAM device attached to a network \r
+ Performs read and write operations on the NVRAM device attached to a network\r
interface.\r
- \r
- This function performs read and write operations on the NVRAM device attached \r
+\r
+ This function performs read and write operations on the NVRAM device attached\r
to a network interface. If ReadWrite is TRUE, a read operation is performed.\r
- If ReadWrite is FALSE, a write operation is performed. Offset specifies the \r
- byte offset at which to start either operation. Offset must be a multiple of \r
- NvRamAccessSize , and it must have a value between zero and NvRamSize. \r
+ If ReadWrite is FALSE, a write operation is performed. Offset specifies the\r
+ byte offset at which to start either operation. Offset must be a multiple of\r
+ NvRamAccessSize , and it must have a value between zero and NvRamSize.\r
BufferSize specifies the length of the read or write operation. BufferSize must\r
also be a multiple of NvRamAccessSize, and Offset + BufferSize must not exceed\r
- NvRamSize. \r
- If any of the above conditions is not met, then EFI_INVALID_PARAMETER will be \r
- returned. \r
- If all the conditions are met and the operation is "read," the NVRAM device \r
- attached to the network interface will be read into Buffer and EFI_SUCCESS \r
+ NvRamSize.\r
+ If any of the above conditions is not met, then EFI_INVALID_PARAMETER will be\r
+ returned.\r
+ If all the conditions are met and the operation is "read," the NVRAM device\r
+ attached to the network interface will be read into Buffer and EFI_SUCCESS\r
will be returned. If this is a write operation, the contents of Buffer will be\r
- used to update the contents of the NVRAM device attached to the network \r
+ used to update the contents of the NVRAM device attached to the network\r
interface and EFI_SUCCESS will be returned.\r
- \r
+\r
It does the basic checking on the input parameters and retrieves snp structure\r
and then calls the read_nvdata() call which does the actual reading\r
\r
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.\r
@param ReadWrite TRUE for read operations, FALSE for write operations.\r
- @param Offset Byte offset in the NVRAM device at which to start the read or \r
- write operation. This must be a multiple of NvRamAccessSize \r
- and less than NvRamSize. (See EFI_SIMPLE_NETWORK_MODE) \r
- @param BufferSize The number of bytes to read or write from the NVRAM device. \r
+ @param Offset Byte offset in the NVRAM device at which to start the read or\r
+ write operation. This must be a multiple of NvRamAccessSize\r
+ and less than NvRamSize. (See EFI_SIMPLE_NETWORK_MODE)\r
+ @param BufferSize The number of bytes to read or write from the NVRAM device.\r
This must also be a multiple of NvramAccessSize.\r
@param Buffer A pointer to the data buffer.\r
\r
@retval EFI_SUCCESS The NVRAM access was performed.\r
@retval EFI_NOT_STARTED The network interface has not been started.\r
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r
- * The This parameter is NULL \r
- * The This parameter does not point to a valid \r
+ * The This parameter is NULL\r
+ * The This parameter does not point to a valid\r
EFI_SIMPLE_NETWORK_PROTOCOL structure\r
- * The Offset parameter is not a multiple of \r
+ * The Offset parameter is not a multiple of\r
EFI_SIMPLE_NETWORK_MODE.NvRamAccessSize\r
- * The Offset parameter is not less than \r
+ * The Offset parameter is not less than\r
EFI_SIMPLE_NETWORK_MODE.NvRamSize\r
- * The BufferSize parameter is not a multiple of \r
+ * The BufferSize parameter is not a multiple of\r
EFI_SIMPLE_NETWORK_MODE.NvRamAccessSize\r
* The Buffer parameter is NULL\r
- @retval EFI_DEVICE_ERROR The command could not be sent to the network \r
+ @retval EFI_DEVICE_ERROR The command could not be sent to the network\r
interface.\r
@retval EFI_UNSUPPORTED This function is not supported by the network\r
interface.\r
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