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/*
* misc.c - various assorted functions
*
* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* 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 version 2
* as published by the Free Software Foundation.
*
* 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>
#include <malloc.h>
#include <errno.h>
#include <fs.h>
unsigned long strtoul_suffix(const char *str, char **endp, int base)
{
unsigned long val;
char *end;
val = simple_strtoul(str, &end, base);
switch (*end) {
case 'G':
val *= 1024;
case 'M':
val *= 1024;
case 'k':
case 'K':
val *= 1024;
end++;
}
if (endp)
*endp = (char *)end;
return val;
}
int parse_area_spec(const char *str, ulong *start, ulong *size)
{
char *endp;
if (*str == '+') {
/* no beginning given but size so start is 0 */
*start = 0;
*size = strtoul_suffix(str + 1, &endp, 0);
return 0;
}
if (*str == '-') {
/* no beginning given but end, so start is 0 */
*start = 0;
*size = strtoul_suffix(str + 1, &endp, 0) + 1;
return 0;
}
*start = strtoul_suffix(str, &endp, 0);
str = endp;
if (!*str) {
/* beginning given, but no size, assume maximum size */
*size = ~0;
return 0;
}
if (*str == '-') {
/* beginning and end given */
*size = strtoul_suffix(str + 1, NULL, 0) + 1;
return 0;
}
if (*str == '+') {
/* beginning and size given */
*size = strtoul_suffix(str + 1, NULL, 0);
return 0;
}
return -1;
}
int spec_str_to_info(const char *str, struct memarea_info *info)
{
char *endp;
int ret;
info->device = device_from_spec_str(str, &endp);
if (!info->device) {
printf("unknown device: %s\n", deviceid_from_spec_str(str, NULL));
return -ENODEV;
}
ret = parse_area_spec(endp, &info->start, &info->size);
if (ret)
return ret;
if (info->size == ~0)
info->size = info->device->size;
return 0;
}
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