diff options
Diffstat (limited to 'board/esd/common/xilinx_jtag/lenval.h')
-rw-r--r-- | board/esd/common/xilinx_jtag/lenval.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/board/esd/common/xilinx_jtag/lenval.h b/board/esd/common/xilinx_jtag/lenval.h new file mode 100644 index 0000000..6bec4ea --- /dev/null +++ b/board/esd/common/xilinx_jtag/lenval.h @@ -0,0 +1,79 @@ +/* + * (C) Copyright 2003 + * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com + * + * 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 + */ + +/*******************************************************/ +/* file: lenval.h */ +/* abstract: This file contains a description of the */ +/* data structure "lenval". */ +/*******************************************************/ + +#ifndef lenval_dot_h +#define lenval_dot_h + +/* the lenVal structure is a byte oriented type used to store an */ +/* arbitrary length binary value. As an example, the hex value */ +/* 0x0e3d is represented as a lenVal with len=2 (since 2 bytes */ +/* and val[0]=0e and val[1]=3d. val[2-MAX_LEN] are undefined */ + +/* maximum length (in bytes) of value to read in */ +/* this needs to be at least 4, and longer than the */ +/* length of the longest SDR instruction. If there is, */ +/* only 1 device in the chain, MAX_LEN must be at least */ +/* ceil(27/8) == 4. For 6 devices in a chain, MAX_LEN */ +/* must be 5, for 14 devices MAX_LEN must be 6, for 20 */ +/* devices MAX_LEN must be 7, etc.. */ +/* You can safely set MAX_LEN to a smaller number if you*/ +/* know how many devices will be in your chain. */ +#define MAX_LEN 7000 + + +typedef struct var_len_byte +{ + short len; /* number of chars in this value */ + unsigned char val[MAX_LEN+1]; /* bytes of data */ +} lenVal; + + +/* return the long representation of a lenVal */ +extern long value(lenVal *x); + +/* set lenVal equal to value */ +extern void initLenVal(lenVal *x, long value); + +/* check if expected equals actual (taking the mask into account) */ +extern short EqualLenVal(lenVal *expected, lenVal *actual, lenVal *mask); + +/* add val1+val2 and put the result in resVal */ +extern void addVal(lenVal *resVal, lenVal *val1, lenVal *val2); + +/* return the (byte, bit) of lv (reading from left to right) */ +extern short RetBit(lenVal *lv, int byte, int bit); + +/* set the (byte, bit) of lv equal to val (e.g. SetBit("00000000",byte, 1) + equals "01000000" */ +extern void SetBit(lenVal *lv, int byte, int bit, short val); + +/* read from XSVF numBytes bytes of data into x */ +extern void readVal(lenVal *x, short numBytes); + +#endif |