env: make import/export optional

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

README

@@ -637,6 +637,7 @@ The following options need to be configured:
 		CONFIG_CMD_EDITENV	  edit env variable
 		CONFIG_CMD_EEPROM	* EEPROM read/write support
 		CONFIG_CMD_ELF		* bootelf, bootvx
+		CONFIG_CMD_EXPORTENV	* export the environment
 		CONFIG_CMD_SAVEENV	  saveenv
 		CONFIG_CMD_FDC		* Floppy Disk Support
 		CONFIG_CMD_FAT		* FAT partition support
@@ -649,6 +650,7 @@ The following options need to be configured:
 		CONFIG_CMD_IMI		  iminfo
 		CONFIG_CMD_IMLS		  List all found images
 		CONFIG_CMD_IMMAP	* IMMR dump support
+		CONFIG_CMD_IMPORTENV	* import an environment
 		CONFIG_CMD_IRQ		* irqinfo
 		CONFIG_CMD_ITEST	  Integer/string test of 2 values
 		CONFIG_CMD_JFFS2	* JFFS2 Support

common/cmd_nvedit.c

@@ -559,6 +559,7 @@ static int do_env_delete(cmd_tbl_t * cmdtp, int flag, int argc, char * const arg
 	return 0;
 }
 
+#ifdef CONFIG_CMD_EXPORTENV
 /*
  * env export [-t | -b | -c] addr [size]
  *	-t:	export as text format; if size is given, data will be
@@ -695,7 +696,9 @@ sep_err:
 		cmd);
 	return 1;
 }
+#endif
 
+#ifdef CONFIG_CMD_IMPORTENV
 /*
  * env import [-d] [-t | -b | -c] addr [size]
  *	-d:	delete existing environment before importing;
@@ -805,6 +808,7 @@ sep_err:
 		cmd);
 	return 1;
 }
+#endif
 
 #if defined(CONFIG_CMD_RUN)
 extern int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
@@ -822,8 +826,12 @@ static cmd_tbl_t cmd_env_sub[] = {
 #if defined(CONFIG_CMD_EDITENV)
 	U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
 #endif
+#if defined(CONFIG_CMD_EXPORTENV)
 	U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
+#endif
+#if defined(CONFIG_CMD_IMPORTENV)
 	U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
+#endif
 	U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
 #if defined(CONFIG_CMD_RUN)
 	U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),

include/config_cmd_defaults.h

@@ -10,5 +10,7 @@
 #define _CONFIG_CMD_DEFAULTS_H_
 
 #define CONFIG_CMD_BOOTM 1
+#define CONFIG_CMD_EXPORTENV 1
+#define CONFIG_CMD_IMPORTENV 1
 
 #endif