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