1 files changed, 50 insertions, 0 deletions
diff --git a/common/cmd_help.c b/common/cmd_help.c
new file mode 100644
index 0000000..e860dfb
--- /dev/null
+++ b/common/cmd_help.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2000-2009
+ * 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
+ */
+
+#include <common.h>
+#include <command.h>
+
+int do_help(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	return _do_help(&__u_boot_cmd_start,
+			&__u_boot_cmd_end - &__u_boot_cmd_start,
+			cmdtp, flag, argc, argv);
+}
+
+U_BOOT_CMD(
+	help,	CONFIG_SYS_MAXARGS,	1,	do_help,
+	"print command description/usage",
+	"\n"
+	"	- print brief description of all commands\n"
+	"help command ...\n"
+	"	- print detailed usage of 'command'"
+);
+
+/* This does not use the U_BOOT_CMD macro as ? can't be used in symbol names */
+cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = {
+	"?",	CONFIG_SYS_MAXARGS,	1,	do_help,
+	"alias for 'help'",
+#ifdef  CONFIG_SYS_LONGHELP
+	""
+#endif /* CONFIG_SYS_LONGHELP */
+};