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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 Red Hat, Inc. // Copyright (C) 2002 Gary Thomas // // 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., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-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) { // Fill 8 bits at a time while ((len -= sizeof(cyg_uint8)) >= 0) { *((cyg_uint8 *)base)++ = (cyg_uint8)pat; } } else if (set_16bit) { // Fill 16 bits at a time while ((len -= sizeof(cyg_uint16)) >= 0) { *((cyg_uint16 *)base)++ = (cyg_uint16)pat; } } else { // Default - 32 bits while ((len -= sizeof(cyg_uint32)) >= 0) { *((cyg_uint32 *)base)++ = (cyg_uint32)pat; } } }