commands: Add of_node command

This command allows to create/delete device nodes.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 111 insertions, 0 deletions

diff --git a/commands/of_node.c b/commands/of_node.c
new file mode 100644
index 0000000000..a370e2699a
--- /dev/null
+++ b/commands/of_node.c
@@ -0,0 +1,111 @@
+/*
+ * of_node.c - device tree node handling support
+ *
+ * Copyright (c) 2013 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.
+ *
+ */
+
+#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>
+#include <libgen.h>
+
+static int do_of_node(int argc, char *argv[])
+{
+	int opt;
+	int delete = 0;
+	int create = 0;
+	char *path = NULL;
+	struct device_node *node = NULL;
+
+	while ((opt = getopt(argc, argv, "cd")) > 0) {
+		switch (opt) {
+		case 'c':
+			create = 1;
+			break;
+		case 'd':
+			delete = 1;
+			break;
+		default:
+			return COMMAND_ERROR_USAGE;
+		}
+	}
+
+	if (optind < argc) {
+		path = argv[optind];
+	}
+
+	if (create) {
+		char *name;
+
+		if (!path)
+			return COMMAND_ERROR_USAGE;
+
+		name = xstrdup(basename(path));
+		path = dirname(path);
+
+		node = of_find_node_by_path(path);
+		if (!node) {
+			printf("Cannot find nodepath %s\n", path);
+			free(name);
+			return -ENOENT;
+		}
+
+		debug("create node \"%s\" \"%s\"\n", path, name);
+
+		of_new_node(node, name);
+
+		free(name);
+
+		return 0;
+	}
+
+	if (delete) {
+		if (!path)
+			return COMMAND_ERROR_USAGE;
+
+		node = of_find_node_by_path(path);
+		if (!node) {
+			printf("Cannot find nodepath %s\n", path);
+			return -ENOENT;
+		}
+
+		of_free(node);
+	}
+
+	return 0;
+}
+
+BAREBOX_CMD_HELP_START(of_node)
+BAREBOX_CMD_HELP_USAGE("of_node [OPTIONS] [NODE] [NAME]\n")
+BAREBOX_CMD_HELP_OPT  ("-c",  "create a new node\n")
+BAREBOX_CMD_HELP_OPT  ("-d",  "delete a node\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(of_node)
+	.cmd		= do_of_node,
+	.usage		= "handle of nodes",
+	BAREBOX_CMD_HELP(cmd_of_node_help)
+BAREBOX_CMD_END