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author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-01-09 23:23:55 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-01-19 11:48:17 +0100 |
commit | db474fe0bb5e0efbb4c48d278c1bf9c592e94d4e (patch) | |
tree | b1b270911202052cc9039b2f5f7602b6420d4d72 /commands/of_node.c | |
parent | 8943b86aa8e821ed1b5238de840fbfadfeb37224 (diff) | |
download | barebox-db474fe0bb5e0efbb4c48d278c1bf9c592e94d4e.tar.gz barebox-db474fe0bb5e0efbb4c48d278c1bf9c592e94d4e.tar.xz |
commands: Add of_node command
This command allows to create/delete device nodes.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/of_node.c')
-rw-r--r-- | commands/of_node.c | 111 |
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 |