From 7a185defac8b19f82a2c6a57e57efe28940623a3 Mon Sep 17 00:00:00 2001
From: Tobias Klauser <klto@zhaw.ch>
Date: Wed, 28 Oct 2009 10:40:26 +0100
Subject: Add U-Boot environment tools, move custom Makefile entries

---
 env/fw_env_main.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 env/fw_env_main.c

(limited to 'env/fw_env_main.c')

diff --git a/env/fw_env_main.c b/env/fw_env_main.c
new file mode 100644
index 0000000..7f631c4
--- /dev/null
+++ b/env/fw_env_main.c
@@ -0,0 +1,81 @@
+/*
+ * (C) Copyright 2000-2008
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Command line user interface to firmware (=U-Boot) environment.
+ *
+ * Implements:
+ *	fw_printenv [[ -n name ] | [ name ... ]]
+ *              - prints the value of a single environment variable
+ *                "name", the ``name=value'' pairs of one or more
+ *                environment variables "name", or the whole
+ *                environment if no names are specified.
+ *	fw_setenv name [ value ... ]
+ *		- If a name without any values is given, the variable
+ *		  with this name is deleted from the environment;
+ *		  otherwise, all "value" arguments are concatenated,
+ *		  separated by single blank characters, and the
+ *		  resulting string is assigned to the environment
+ *		  variable "name"
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "fw_env.h"
+
+#define	CMD_PRINTENV	"fw_printenv"
+#define CMD_SETENV	"fw_setenv"
+
+int
+main(int argc, char *argv[])
+{
+	char *p;
+	char *cmdname = *argv;
+
+	if ((p = strrchr (cmdname, '/')) != NULL) {
+		cmdname = p + 1;
+	}
+
+	if (strcmp(cmdname, CMD_PRINTENV) == 0) {
+
+		if (fw_printenv (argc, argv) != 0)
+			return (EXIT_FAILURE);
+
+		return (EXIT_SUCCESS);
+
+	} else if (strcmp(cmdname, CMD_SETENV) == 0) {
+
+		if (fw_setenv (argc, argv) != 0)
+			return (EXIT_FAILURE);
+
+		return (EXIT_SUCCESS);
+
+	}
+
+	fprintf (stderr,
+		"Identity crisis - may be called as `" CMD_PRINTENV
+		"' or as `" CMD_SETENV "' but not as `%s'\n",
+		cmdname);
+	return (EXIT_FAILURE);
+}
-- 
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