| /****************************************************************************** |
| * Copyright (c) 2004, 2008 IBM Corporation |
| * All rights reserved. |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *****************************************************************************/ |
| #ifndef CALCULATECRC_H |
| #define CALCULATECRC_H |
| |
| #define FLASHFS_DATADDR 0x18 // uint64_t position of pointer to data |
| #define FLASHFS_FILE_SIZE_ADDR 0x08 // uint64_t pos of total flashimage size value relative to data |
| #define FLASHFS_HEADER_SIZE_ADDR 0x08 // uint64_t position of total flash header size value |
| |
| #ifdef __ASSEMBLER__ |
| // "CRC_GENERATOR" must contain equal inforamtion as "CRC_METHODE" |
| #define CRC_GENERATOR 0x0000000004C11DB7 |
| #define CRC_REGISTERMASK 0x00000000FFFFFFFF |
| #define CRC_REGISTERLENGTH 32 |
| #endif /* __ASSEMBLER__ */ |
| |
| #ifndef __ASSEMBLER__ |
| #define FLASHFS_ROMADDR 0x00 // uint64_t position of pointer to next file |
| #define FLASHFS_HEADER_DATA_SIZE 0x68 // 104 bytes of total header data size |
| #define CRC_METHODE Ethernet_32 // define the CRc genarator (CRC 16 bit to 64 is supported) |
| |
| //--- header format --------------------------------- |
| struct stH { |
| char magic[8]; // (generic!) headerfile |
| uint64_t flashlen; // dyn |
| char version[16]; // $DRIVER_INFO alignment! |
| char platform_name[32]; // (hardware) headerfile |
| char date[6]; // dyn (format -> JB) |
| char padding1[2]; // padding byte |
| char mdate[6]; // modify date |
| char padding2[2]; // padding byte |
| char platform_revision[4];// (hardware) headerfile |
| uint32_t padding; |
| uint64_t ui64CRC; // insert calculated CRC here |
| uint64_t ui64FileEnd; // = 0xFFFF FFFF FFFF FFFF |
| }; |
| #endif /* __ASSEMBLER__ */ |
| |
| #endif /* CALCULATECRC_H */ |
| |
| /*--- supported CRC Generators ------------------------- |
| + Name length usage Generator |
| + Tap_16 16 bit Tape 0x00008005 |
| + Floppy_16 16 bit Floppy 0x00001021 |
| + Ethernet_32 32 bit Ethernet 0x04C11DB7 |
| + SPTrEMBL_64 64 bit white noise like date 0x0000001B |
| + SPTrEMBL_improved_64 64 bit DNA code like date 0xAD93D23594C9362D |
| + DLT1_64 64 bit Tape 0x42F0E1EBA9EA3693 |
| + |
| + CRC_REGISTERLENGTH = bit length |
| + CRC_REGISTERMASK = -1 for a n-bit numer where n = bit length |
| + example TAP_16: CRC_REGSISTERLENGTH = 16 |
| + CRC_REGISTERMASK = 0xFFFFFFFF = (-1 if 16 bit number is used) |
| + |
| + TrEMBL see also http://www.cs.ud.ac.uk/staff/D.Jones/crcbote.pdf |
| + DLT1 se also http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-182.pdf |
| +--------------------------------------------------------*/ |
