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