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annotate packages/redboot/current/src/cksum.c @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
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1 //==========================================================================
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2 //
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3 // cksum.c
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4 //
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5 // RedBoot POSIX CRC calculation/command
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6 //
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7 //==========================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): gthomas
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43 // Contributors: gthomas
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44 // Date: 2001-01-31
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45 // Purpose:
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46 // Description:
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47 //
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48 // This code is part of RedBoot (tm).
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49 //
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50 //####DESCRIPTIONEND####
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51 //
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52 //==========================================================================
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53
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54 #include <redboot.h>
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55
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56 // Compute a CRC, using the POSIX 1003 definition
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57
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58 RedBoot_cmd("cksum",
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59 "Compute a 32bit checksum [POSIX algorithm] for a range of memory",
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60 "-b <location> -l <length>",
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61 do_cksum
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62 );
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63
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64 void
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65 do_cksum(int argc, char *argv[])
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66 {
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67 struct option_info opts[2];
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68 unsigned long base, len, crc;
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69 bool base_set, len_set;
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70
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71 init_opts(&opts[0], 'b', true, OPTION_ARG_TYPE_NUM,
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72 (void *)&base, (bool *)&base_set, "base address");
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73 init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM,
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74 (void *)&len, (bool *)&len_set, "length");
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75 if (!scan_opts(argc, argv, 1, opts, 2, 0, 0, "")) {
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76 return;
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77 }
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78 if (!base_set || !len_set) {
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79 if (load_address >= (CYG_ADDRESS)ram_start &&
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80 load_address_end < (CYG_ADDRESS)ram_end &&
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81 load_address < load_address_end) {
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82 base = load_address;
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83 len = load_address_end - load_address;
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84 diag_printf("Computing cksum for area %lx-%lx\n",
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85 base, load_address_end);
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86 } else {
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87 diag_printf("usage: cksum -b <addr> -l <length>\n");
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88 return;
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89 }
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90 }
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91 crc = cyg_posix_crc32((unsigned char *)base, len);
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92 diag_printf("POSIX cksum = %lu %lu (0x%08lx 0x%08lx)\n", crc, len, crc, len);
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93 }
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94