param: add config to disable it

this will allow to save 992 Bytes for TI xlaoder or AT91 bootstrap

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

common/Kconfig

@@ -258,6 +258,7 @@ choice
 		bool "hush parser"
 		select ENVIRONMENT_VARIABLES
 		select COMMAND_SUPPORT
+		select PARAMETER
 		help
 		  Enable hush support. This is the most advanced shell available
 		  for barebox.
@@ -266,6 +267,7 @@ choice
 		bool "Simple parser"
 		select ENVIRONMENT_VARIABLES
 		select COMMAND_SUPPORT
+		select PARAMETER
 		help
 		  simple shell. No if/then, no return values from commands, no loops
 

drivers/mtd/core.c

@@ -204,14 +204,16 @@ int add_mtd_device(struct mtd_info *mtd, char *devname)
 	mtd->cdev.dev = &mtd->class_dev;
 	mtd->cdev.mtd = mtd;
 
-	sprintf(str, "%u", mtd->size);
-	dev_add_param_fixed(&mtd->class_dev, "size", str);
-	sprintf(str, "%u", mtd->erasesize);
-	dev_add_param_fixed(&mtd->class_dev, "erasesize", str);
-	sprintf(str, "%u", mtd->writesize);
-	dev_add_param_fixed(&mtd->class_dev, "writesize", str);
-	sprintf(str, "%u", mtd->oobsize);
-	dev_add_param_fixed(&mtd->class_dev, "oobsize", str);
+	if (IS_ENABLED(CONFIG_PARAMETER)) {
+		sprintf(str, "%u", mtd->size);
+		dev_add_param_fixed(&mtd->class_dev, "size", str);
+		sprintf(str, "%u", mtd->erasesize);
+		dev_add_param_fixed(&mtd->class_dev, "erasesize", str);
+		sprintf(str, "%u", mtd->writesize);
+		dev_add_param_fixed(&mtd->class_dev, "writesize", str);
+		sprintf(str, "%u", mtd->oobsize);
+		dev_add_param_fixed(&mtd->class_dev, "oobsize", str);
+	}
 
 	devfs_create(&mtd->cdev);
 

include/param.h

@@ -19,6 +19,7 @@ struct param_d {
 	struct list_head list;
 };
 
+#ifdef CONFIG_PARAMETER
 const char *dev_get_param(struct device_d *dev, const char *name);
 int dev_set_param(struct device_d *dev, const char *name, const char *val);
 struct param_d *get_param_by_name(struct device_d *dev, const char *name);
@@ -40,6 +41,58 @@ int dev_set_param_ip(struct device_d *dev, char *name, IPaddr_t ip);
 IPaddr_t dev_get_param_ip(struct device_d *dev, char *name);
 
 int global_add_parameter(struct param_d *param);
+#else
+static inline const char *dev_get_param(struct device_d *dev, const char *name)
+{
+	return NULL;
+}
+static inline int dev_set_param(struct device_d *dev, const char *name,
+				const char *val)
+{
+	return 0;
+}
+static inline struct param_d *get_param_by_name(struct device_d *dev,
+						const char *name)
+{
+	return NULL;
+}
+
+static inline int dev_add_param(struct device_d *dev, char *name,
+		int (*set)(struct device_d *dev, struct param_d *p, const char *val),
+		char *(*get)(struct device_d *, struct param_d *p),
+		unsigned long flags)
+{
+	return 0;
+}
+
+static inline int dev_add_param_fixed(struct device_d *dev, char *name, char *value)
+{
+	return 0;
+}
+
+static inline void dev_remove_parameters(struct device_d *dev) {}
+
+static inline int dev_param_set_generic(struct device_d *dev, struct param_d *p,
+		const char *val)
+{
+	return 0;
+}
+
+/* Convenience functions to handle a parameter as an ip address */
+static inline int dev_set_param_ip(struct device_d *dev, char *name, IPaddr_t ip)
+{
+	return 0;
+}
+static inline IPaddr_t dev_get_param_ip(struct device_d *dev, char *name)
+{
+	return 0;
+}
+
+static inline int global_add_parameter(struct param_d *param)
+{
+	return 0;
+}
+#endif
 
 #endif /* PARAM_H */
 

lib/Kconfig

@@ -1,4 +1,7 @@
 menu "Library routines"
+config PARAMETER
+	bool
+
 config UNCOMPRESS
 	bool
 	select FILETYPE

lib/Makefile

@@ -5,7 +5,7 @@ obj-y			+= string.o
 obj-y			+= vsprintf.o
 obj-y			+= div64.o
 obj-y			+= misc.o
-obj-y			+= parameter.o
+obj-$(CONFIG_PARAMETER)	+= parameter.o
 obj-y			+= xfuncs.o
 obj-y			+= getopt.o
 obj-y 			+= readkey.o