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Diffstat (limited to 'src/roms/SLOF/include/calculatecrc.h')
| -rw-r--r-- | src/roms/SLOF/include/calculatecrc.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/roms/SLOF/include/calculatecrc.h b/src/roms/SLOF/include/calculatecrc.h new file mode 100644 index 0000000..2168478 --- /dev/null +++ b/src/roms/SLOF/include/calculatecrc.h @@ -0,0 +1,66 @@ +/****************************************************************************** + * 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 ++--------------------------------------------------------*/ |
