135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/*
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* oftree.c - device tree command support
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*
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* Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* based on U-Boot code by:
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*
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* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
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* Pantelis Antoniou <pantelis.antoniou@gmail.com> and
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* Matthew McClintock <msm@freescale.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <environment.h>
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#include <fdt.h>
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#include <of.h>
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#include <command.h>
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#include <fs.h>
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#include <malloc.h>
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#include <libfdt.h>
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#include <linux/ctype.h>
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#include <asm/byteorder.h>
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#include <errno.h>
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#include <getopt.h>
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#include <init.h>
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static int do_oftree(int argc, char *argv[])
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{
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struct fdt_header *fdt;
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int size;
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int opt;
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char *file = NULL;
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const char *node = "/";
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int dump = 0;
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int probe = 0;
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int ret;
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while ((opt = getopt(argc, argv, "dpfn:")) > 0) {
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switch (opt) {
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case 'd':
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dump = 1;
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break;
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case 'p':
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if (IS_ENABLED(CONFIG_CMD_OFTREE_PROBE)) {
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probe = 1;
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} else {
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printf("oftree device probe support disabled\n");
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return COMMAND_ERROR_USAGE;
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}
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break;
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case 'f':
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free(barebox_fdt);
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barebox_fdt = NULL;
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return 0;
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case 'n':
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node = optarg;
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break;
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}
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}
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if (optind < argc)
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file = argv[optind];
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if (!dump && !probe)
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return COMMAND_ERROR_USAGE;
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if (dump) {
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if (file) {
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fdt = read_file(file, &size);
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if (!fdt) {
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printf("unable to read %s\n", file);
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return 1;
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}
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fdt_print(fdt, node);
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free(fdt);
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} else {
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if (barebox_fdt) {
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fdt_print(barebox_fdt, node);
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return 0;
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} else {
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return 1;
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}
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}
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return 0;
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}
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if (probe) {
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if (!file)
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return COMMAND_ERROR_USAGE;
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fdt = read_file(file, &size);
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if (!fdt) {
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perror("open");
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return 1;
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}
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ret = of_parse_dtb(fdt);
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if (ret) {
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printf("parse oftree: %s\n", strerror(-ret));
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return 1;
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}
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of_probe();
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}
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return 0;
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}
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BAREBOX_CMD_HELP_START(oftree)
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BAREBOX_CMD_HELP_USAGE("oftree [OPTIONS]\n")
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BAREBOX_CMD_HELP_OPT ("-p <FILE>", "probe devices in oftree from <file>\n")
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BAREBOX_CMD_HELP_OPT ("-d [FILE]", "dump oftree from [FILE] or the parsed tree if no file is given\n")
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BAREBOX_CMD_HELP_OPT ("-f", "free stored oftree\n")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(oftree)
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.cmd = do_oftree,
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.usage = "handle oftrees",
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BAREBOX_CMD_HELP(cmd_oftree_help)
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BAREBOX_CMD_END
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