source: SVN/rincon/u-boot/board/esd/common/xilinx_jtag/lenval.h @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

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Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.9 KB
Line 
1/*
2 * (C) Copyright 2003
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*******************************************************/
25/* file: lenval.h                                      */
26/* abstract:  This file contains a description of the  */
27/*            data structure "lenval".                 */
28/*******************************************************/
29
30#ifndef lenval_dot_h
31#define lenval_dot_h
32
33/* the lenVal structure is a byte oriented type used to store an */
34/* arbitrary length binary value. As an example, the hex value   */
35/* 0x0e3d is represented as a lenVal with len=2 (since 2 bytes   */
36/* and val[0]=0e and val[1]=3d.  val[2-MAX_LEN] are undefined    */
37
38/* maximum length (in bytes) of value to read in        */
39/* this needs to be at least 4, and longer than the     */
40/* length of the longest SDR instruction.  If there is, */
41/* only 1 device in the chain, MAX_LEN must be at least */
42/* ceil(27/8) == 4.  For 6 devices in a chain, MAX_LEN  */
43/* must be 5, for 14 devices MAX_LEN must be 6, for 20  */
44/* devices MAX_LEN must be 7, etc..                     */
45/* You can safely set MAX_LEN to a smaller number if you*/
46/* know how many devices will be in your chain.         */
47#define MAX_LEN 7000
48
49
50typedef struct var_len_byte
51{
52        short len;   /* number of chars in this value */
53        unsigned char val[MAX_LEN+1];  /* bytes of data */
54} lenVal;
55
56
57/* return the long representation of a lenVal */
58extern long value(lenVal *x);
59
60/* set lenVal equal to value */
61extern void initLenVal(lenVal *x, long value);
62
63/* check if expected equals actual (taking the mask into account) */
64extern short EqualLenVal(lenVal *expected, lenVal *actual, lenVal *mask);
65
66/* add val1+val2 and put the result in resVal */
67extern void addVal(lenVal *resVal, lenVal *val1, lenVal *val2);
68
69/* return the (byte, bit) of lv (reading from left to right) */
70extern short RetBit(lenVal *lv, int byte, int bit);
71
72/* set the (byte, bit) of lv equal to val (e.g. SetBit("00000000",byte, 1)
73   equals "01000000" */
74extern void SetBit(lenVal *lv, int byte, int bit, short val);
75
76/* read from XSVF numBytes bytes of data into x */
77extern void  readVal(lenVal *x, short numBytes);
78
79#endif
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