111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/*
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* of_node.c - device tree node handling support
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*
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* Copyright (c) 2013 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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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 <complete.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 <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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#include <libgen.h>
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static int do_of_node(int argc, char *argv[])
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{
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int opt;
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int delete = 0;
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int create = 0;
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char *path = NULL;
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struct device_node *node = NULL;
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struct device_node *root;
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while ((opt = getopt(argc, argv, "cd")) > 0) {
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switch (opt) {
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case 'c':
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create = 1;
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break;
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case 'd':
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delete = 1;
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break;
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default:
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return COMMAND_ERROR_USAGE;
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}
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}
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if (optind == argc)
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return COMMAND_ERROR_USAGE;
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if (optind < argc) {
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path = argv[optind];
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}
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root = of_get_root_node();
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if (!root) {
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printf("root node not set\n");
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return -ENOENT;
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}
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if (create) {
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if (!path)
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return COMMAND_ERROR_USAGE;
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node = of_create_node(root, path);
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if (!node)
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return -EINVAL;
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return 0;
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}
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if (delete) {
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if (!path)
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return COMMAND_ERROR_USAGE;
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node = of_find_node_by_path(path);
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if (!node) {
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printf("Cannot find nodepath %s\n", path);
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return -ENOENT;
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}
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of_delete_node(node);
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}
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return 0;
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}
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BAREBOX_CMD_HELP_START(of_node)
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BAREBOX_CMD_HELP_TEXT("Options:")
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BAREBOX_CMD_HELP_OPT ("-c", "create a new node")
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BAREBOX_CMD_HELP_OPT ("-d", "delete a node")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(of_node)
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.cmd = do_of_node,
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BAREBOX_CMD_DESC("create/delete nodes in the device tree")
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BAREBOX_CMD_OPTS("[-cd] NODE NAME")
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BAREBOX_CMD_GROUP(CMD_GRP_MISC)
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BAREBOX_CMD_COMPLETE(devicetree_complete)
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BAREBOX_CMD_HELP(cmd_of_node_help)
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BAREBOX_CMD_END
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