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/*
* oftree.c - device tree command support
*
* Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* based on U-Boot code by:
*
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
* Pantelis Antoniou <pantelis.antoniou@gmail.com> and
* Matthew McClintock <msm@freescale.com>
*
* 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 <environment.h>
#include <fdt.h>
#include <of.h>
#include <command.h>
#include <fs.h>
#include <malloc.h>
#include <libfdt.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
#include <errno.h>
#include <getopt.h>
#include <init.h>
static int do_oftree(struct command *cmdtp, int argc, char *argv[])
{
struct fdt_header *fdt;
int size;
int opt;
char *file = NULL;
const char *node = "/";
int dump = 0;
int parse = 0;
while ((opt = getopt(argc, argv, "dpfn:")) > 0) {
switch (opt) {
case 'd':
dump = 1;
break;
case 'p':
parse = 1;
break;
case 'f':
free(barebox_fdt);
barebox_fdt = NULL;
return 0;
case 'n':
node = optarg;
break;
}
}
if (optind < argc)
file = argv[optind];
if (!dump && !parse)
return COMMAND_ERROR_USAGE;
if (dump) {
if (file) {
fdt = read_file(file, &size);
if (!fdt) {
printf("unable to read %s\n", file);
return 1;
}
fdt_print(fdt, node);
free(fdt);
} else {
if (barebox_fdt) {
fdt_print(barebox_fdt, node);
return 0;
} else {
return 1;
}
}
return 0;
}
if (parse) {
if (!file)
return COMMAND_ERROR_USAGE;
fdt = read_file(file, &size);
if (!fdt) {
perror("open");
return 1;
}
fdt = xrealloc(fdt, size + 0x8000);
fdt_open_into(fdt, fdt, size + 0x8000);
if (!fdt) {
printf("unable to read %s\n", file);
return 1;
}
if (barebox_fdt)
free(barebox_fdt);
barebox_fdt = fdt;
}
return 0;
}
BAREBOX_CMD_HELP_START(oftree)
BAREBOX_CMD_HELP_USAGE("oftree [OPTIONS]\n")
BAREBOX_CMD_HELP_OPT ("-p <FILE>", "parse and store oftree from <file>\n")
BAREBOX_CMD_HELP_OPT ("-d [FILE]", "dump oftree from [FILE] or the parsed tree if no file is given\n")
BAREBOX_CMD_HELP_OPT ("-f", "free stored oftree\n")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(oftree)
.cmd = do_oftree,
.usage = "handle oftrees",
BAREBOX_CMD_HELP(cmd_oftree_help)
BAREBOX_CMD_END
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