//==========================================================================
//
//      mfill.c
//
//      RedBoot memory fill (mfill) routine
//
//==========================================================================
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// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos 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     
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// version.                                                                 
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// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
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// General Public License v2.                                               
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// on this file might be covered by the GNU General Public License.         
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// ####ECOSGPLCOPYRIGHTEND####                                              
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    gthomas
// Contributors: gthomas
// Date:         2002-08-06
// Purpose:      
// Description:  
//              
// This code is part of RedBoot (tm).
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <redboot.h>

RedBoot_cmd("mfill", 
            "Fill a block of memory with a pattern",
            "-b <location> -l <length> -p <pattern> [-1|-2|-4]",
            do_mfill
    );

void
do_mfill(int argc, char *argv[])
{
    // Fill a region of memory with a pattern
    struct option_info opts[6];
    unsigned long base, pat;
    long len;
    bool base_set, len_set, pat_set;
    bool set_32bit, set_16bit, set_8bit;

    init_opts(&opts[0], 'b', true, OPTION_ARG_TYPE_NUM, 
              (void *)&base, (bool *)&base_set, "base address");
    init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM, 
              (void *)&len, (bool *)&len_set, "length");
    init_opts(&opts[2], 'p', true, OPTION_ARG_TYPE_NUM, 
              (void *)&pat, (bool *)&pat_set, "pattern");
    init_opts(&opts[3], '4', false, OPTION_ARG_TYPE_FLG,
              (void *)&set_32bit, (bool *)0, "fill 32 bit units");
    init_opts(&opts[4], '2', false, OPTION_ARG_TYPE_FLG,
              (void *)&set_16bit, (bool *)0, "fill 16 bit units");
    init_opts(&opts[5], '1', false, OPTION_ARG_TYPE_FLG,
              (void *)&set_8bit, (bool *)0, "fill 8 bit units");
    if (!scan_opts(argc, argv, 1, opts, 6, 0, 0, "")) {
        return;
    }
    if (!base_set || !len_set) {
        diag_printf("usage: mfill -b <addr> -l <length> [-p <pattern>] [-1|-2|-4]\n");
        return;
    }
    if (!pat_set) {
        pat = 0;
    }
    // No checks here    

    if (set_8bit) {
        cyg_uint8 *p = (cyg_uint8 *)base;
        while ((len -= sizeof(cyg_uint8)) >= 0)
            *p++ = (cyg_uint8)pat;
    } else if (set_16bit) {
        cyg_uint16 *p = (cyg_uint16 *)base;
        while ((len -= sizeof(cyg_uint16)) >= 0)
            *p++ = (cyg_uint16)pat;
    } else {
        cyg_uint32 *p = (cyg_uint32 *)base;
        while ((len -= sizeof(cyg_uint32)) >= 0)
            *p++ = (cyg_uint32)pat;
    }
    
}

