1 files changed, 84 insertions, 0 deletions
diff --git a/commands/nv.c b/commands/nv.c
new file mode 100644
index 0000000000..8cebb856f4
--- /dev/null
+++ b/commands/nv.c
@@ -0,0 +1,84 @@
+/*
+ * nv.c - non volatile shell variables
+ *
+ * Copyright (c) 2014 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 <malloc.h>
+#include <command.h>
+#include <globalvar.h>
+#include <environment.h>
+#include <getopt.h>
+
+static int do_nv(int argc, char *argv[])
+{
+	int opt;
+	int do_remove = 0;
+	int ret;
+	char *value;
+
+	while ((opt = getopt(argc, argv, "r")) > 0) {
+		switch (opt) {
+		case 'r':
+			do_remove = 1;
+			break;
+		default:
+			return COMMAND_ERROR_USAGE;
+		}
+	}
+
+	if (argc == optind) {
+		nvvar_print();
+		return 0;
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc != 1)
+		return COMMAND_ERROR_USAGE;
+
+	value = strchr(argv[0], '=');
+	if (value) {
+		*value = 0;
+		value++;
+	}
+
+	if (do_remove)
+		ret = nvvar_remove(argv[0]);
+	else
+		ret = nvvar_add(argv[0], value);
+
+	return ret;
+}
+
+BAREBOX_CMD_HELP_START(nv)
+BAREBOX_CMD_HELP_TEXT("Add a new non volatile variable named VAR, optionally set to VALUE.")
+BAREBOX_CMD_HELP_TEXT("non volatile variables are persistent variables that overwrite the")
+BAREBOX_CMD_HELP_TEXT("global variables of the same name. Their value is saved with")
+BAREBOX_CMD_HELP_TEXT("'saveenv'.")
+BAREBOX_CMD_HELP_TEXT("")
+BAREBOX_CMD_HELP_TEXT("Options:")
+BAREBOX_CMD_HELP_OPT("-r", "remove a non volatile variable")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(nv)
+	.cmd		= do_nv,
+	BAREBOX_CMD_DESC("create or set non volatile variables")
+	BAREBOX_CMD_OPTS("[-r] VAR[=VALUE]")
+	BAREBOX_CMD_GROUP(CMD_GRP_ENV)
+	BAREBOX_CMD_HELP(cmd_nv_help)
+BAREBOX_CMD_END