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114 lines
4 KiB
C
114 lines
4 KiB
C
/*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*--------------------------------------------------------------------------
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*
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* Motorola S-Record Format:
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*
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* Motorola S-Records are an industry-standard format for
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* transmitting binary files to target systems and PROM
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* programmers. LSI Logic have extended this standard to include
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* an S4-record containing an address and a symbol.
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*
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* The extended S-record standard is as follows:
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*
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* S<type><length><address><data....><checksum>
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* S4<length><address><name>,<checksum>
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*
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* Where:
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*
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* type
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* is the record type. Where:
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*
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* 0 starting record (optional)
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* 1 data record with 16-bit address
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* 2 data record with 24-bit address
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* 3 data record with 32-bit address
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* 4 symbol record (LSI extension)
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* 5 number of data records in preceeding block
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* 6 unused
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* 7 ending record for S3 records
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* 8 ending record for S2 records
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* 9 ending record for S1 records
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*
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* length
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* is two hex characters. This defines the length of the
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* record in bytes (not characters). It includes the address
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* field, the data field, and the checksum field.
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*
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* address
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* is 4, 6, or 8 characters. Corresponding to a 16-, 24-, or
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* 32-bit address. The address field for S4 records is
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* always 32 bits.
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*
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* data
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*
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* Are the data bytes. Each pair of hex characters represent
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* one byte in memory.
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*
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* name
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* Is the symbol name. The symbol is terminated by a ','.
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*
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* checksum
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* Is the one's complement of the 8-bit checksum.
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*
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* Example
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*
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* S0030000FC
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* .
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* .
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* S325000004403C0880018D08DD900000000011000026000000003C0880012508DC50C50000B401
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* S32500000460C50100B8C50200BCC50300C0C50400C4C50500C8C50600CCC50700D0C50800D4FA
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* S32500000480C50900D8C50A00DCC50B00E0C50C00E4C50D00E8C50E00ECC50F00F0C51000F49A
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* S325000004A0C51100F8C51200FCC5130100C5140104C5150108C516010CC5170110C518011434
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* .
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* .
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* S70500000000FA
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*
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* The S0 record starts the file. The S3 records contain the
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* data. The S7 record contains the entry address and terminates
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* the download.
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*
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*--------------------------------------------------------------------------
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*/
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#define SREC_START 0 /* Start Record (module name) */
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#define SREC_DATA2 1 /* Data Record with 2 byte address */
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#define SREC_DATA3 2 /* Data Record with 3 byte address */
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#define SREC_DATA4 3 /* Data Record with 4 byte address */
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#define SREC_COUNT 5 /* Count Record (previously transmitted) */
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#define SREC_END4 7 /* End Record with 4 byte start address */
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#define SREC_END3 8 /* End Record with 3 byte start address */
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#define SREC_END2 9 /* End Record with 2 byte start address */
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#define SREC_EMPTY 10 /* Empty Record without any data */
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#define SREC_REC_OK SREC_EMPTY /* last code without error condition */
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#define SREC_E_BADTYPE -1 /* no valid S-Record */
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#define SREC_E_NOSREC -2 /* line format differs from s-record */
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#define SREC_E_BADCHKS -3 /* checksum error in an s-record line */
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#define SREC_MAXRECLEN (512 + 4) /* max ASCII record length */
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#define SREC_MAXBINLEN 255 /* resulting binary length */
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int srec_decode (char *input, int *count, ulong *addr, char *data);
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