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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [redboot/] [v2_0/] [src/] [mfill.c] - Blame information for rev 256

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1 27 unneback
//==========================================================================
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//
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//      mfill.c
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//
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//      RedBoot memory fill (mfill) routine
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//
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//==========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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// Copyright (C) 2002 Gary Thomas
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s):    gthomas
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// Contributors: gthomas
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// Date:         2002-08-06
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// Purpose:      
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// Description:  
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//              
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// This code is part of RedBoot (tm).
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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#include <redboot.h>
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RedBoot_cmd("mfill",
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            "Fill a block of memory with a pattern",
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            "-b <location> -l <length> -p <pattern> [-1|-2|-4]",
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            do_mfill
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    );
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void
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do_mfill(int argc, char *argv[])
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{
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    // Fill a region of memory with a pattern
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    struct option_info opts[6];
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    unsigned long base, pat;
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    long len;
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    bool base_set, len_set, pat_set;
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    bool set_32bit, set_16bit, set_8bit;
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    init_opts(&opts[0], 'b', true, OPTION_ARG_TYPE_NUM,
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              (void **)&base, (bool *)&base_set, "base address");
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    init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM,
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              (void **)&len, (bool *)&len_set, "length");
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    init_opts(&opts[2], 'p', true, OPTION_ARG_TYPE_NUM,
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              (void **)&pat, (bool *)&pat_set, "pattern");
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    init_opts(&opts[3], '4', false, OPTION_ARG_TYPE_FLG,
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              (void *)&set_32bit, (bool *)0, "fill 32 bit units");
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    init_opts(&opts[4], '2', false, OPTION_ARG_TYPE_FLG,
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              (void **)&set_16bit, (bool *)0, "fill 16 bit units");
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    init_opts(&opts[5], '1', false, OPTION_ARG_TYPE_FLG,
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              (void **)&set_8bit, (bool *)0, "fill 8 bit units");
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    if (!scan_opts(argc, argv, 1, opts, 6, 0, 0, "")) {
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        return;
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    }
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    if (!base_set || !len_set) {
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        diag_printf("usage: mfill -b <addr> -l <length> [-p <pattern>] [-1|-2|-4]\n");
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        return;
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    }
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    if (!pat_set) {
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        pat = 0;
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    }
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    // No checks here    
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    if (set_8bit) {
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        // Fill 8 bits at a time
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        while ((len -= sizeof(cyg_uint8)) >= 0) {
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            *((cyg_uint8 *)base)++ = (cyg_uint8)pat;
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        }
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    } else if (set_16bit) {
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        // Fill 16 bits at a time
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        while ((len -= sizeof(cyg_uint16)) >= 0) {
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            *((cyg_uint16 *)base)++ = (cyg_uint16)pat;
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        }
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    } else {
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        // Default - 32 bits
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        while ((len -= sizeof(cyg_uint32)) >= 0) {
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            *((cyg_uint32 *)base)++ = (cyg_uint32)pat;
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        }
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    }
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}

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