FreeCalypso > hg > freecalypso-sw

annotate target-utils/libtiffs/rdinmem.c @ 992:a7b0b426f9ca

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target-utils: boot ROM UART autodetection revamped The new implementation should work with both the familiar Calypso C035 boot ROM version found in our regular targets as well as the older Calypso F741979B version found on the vintage D-Sample board.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 21:28:41 +0000
parents 2900fe603f8a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
103
ac310ee73788 target-utils/libmpffs: minor refactoring, read into RAM implemented
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1 #include <sys/types.h>
ac310ee73788 target-utils/libmpffs: minor refactoring, read into RAM implemented
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2 #include "types.h"
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3 #include "struct.h"
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4 #include "globals.h"
ac310ee73788 target-utils/libmpffs: minor refactoring, read into RAM implemented
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5 #include "macros.h"
ac310ee73788 target-utils/libmpffs: minor refactoring, read into RAM implemented
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6
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7 mpffs_read_into_ram(pathname, buf, maxlen, lenrtn)
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8 char *pathname;
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9 u8 *buf;
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10 size_t maxlen, *lenrtn;
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11 {
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12 int stat, cont;
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13 u8 *chunk_start;
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14 size_t chunk_size, real_len, roomleft;
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15
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16 stat = mpffs_find_file(pathname, &chunk_start, &chunk_size, &cont);
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17 if (stat < 0)
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18 return(stat);
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19 if (chunk_size > maxlen) {
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20 toobig: printf("Error: %s is bigger than the read buffer\n", pathname);
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21 return(-1);
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22 }
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23 real_len = chunk_size;
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24 bcopy(chunk_start, buf, chunk_size);
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25 buf += chunk_size;
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26 roomleft = maxlen - chunk_size;
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27 while (cont) {
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28 stat = mpffs_get_segment(cont, &chunk_start, &chunk_size,
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29 &cont);
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30 if (stat < 0)
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31 return(stat);
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32 if (chunk_size > roomleft)
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33 goto toobig;
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34 real_len += chunk_size;
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35 bcopy(chunk_start, buf, chunk_size);
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36 buf += chunk_size;
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37 roomleft -= chunk_size;
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38 }
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39 if (lenrtn)
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40 *lenrtn = real_len;
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41 return(0);
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42 }