display_options.c

来自「嵌入式试验箱S3C2410的bootloader源代码」· C语言 代码 · 共 68 行

/*
 * (C) Copyright 2000-2002
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program 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 of
 * the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>

int display_options (void)
{
	extern char version_string[];

#if defined(BUILD_TAG)
	printf ("\n\n%s, Build: %s\n\n", version_string, BUILD_TAG);
#else
	printf ("\n\n%s\n\n", version_string);
#endif
	return 0;
}

/*
 * print sizes as "xxx kB", "xxx.y kB", "xxx MB" or "xxx.y MB" as needed;
 * allow for optional trailing string (like "\n")
 */
void print_size (ulong size, const char *s)
{
	ulong m, n;
	ulong d = 1 << 20;		/* 1 MB */
	char  c = 'M';

	if (size < d) {			/* print in kB */
		c = 'k';
		d = 1 << 10;
	}

	n = size / d;

	m = (10 * (size - (n * d)) + (d / 2) ) / d;

	if (m >= 10) {
		m -= 10;
		n += 1;
	}

	printf ("%2ld", n);
	if (m) {
		printf (".%ld", m);
	}
	printf (" %cB%s", c, s);
}