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//==========================================================================
//
// mfill.c
//
// RedBoot memory fill (mfill) routine
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// 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
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// 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
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####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;
}
}
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