fdtget: Split out cell list display into a new function

The show_data() function is quite long. Split out the part that loops
through the values. This makes it easier to add new features.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

fdtget.c

@@ -53,6 +53,37 @@ static void report_error(const char *where, int err)
 	fprintf(stderr, "Error at '%s': %s\n", where, fdt_strerror(err));
 }
 
+/**
+ * Shows a list of cells in the requested format
+ *
+ * @param disp		Display information / options
+ * @param data		Data to display
+ * @param len		Maximum length of buffer
+ * @param size		Data size to use for display (e.g. 4 for 32-bit)
+ * @return 0 if ok, -1 on error
+ */
+static int show_cell_list(struct display_info *disp, const char *data, int len,
+			  int size)
+{
+	const uint8_t *p = (const uint8_t *)data;
+	char fmt[3];
+	int value;
+	int i;
+
+	fmt[0] = '%';
+	fmt[1] = disp->type ? disp->type : 'd';
+	fmt[2] = '\0';
+	for (i = 0; i < len; i += size, p += size) {
+		if (i)
+			printf(" ");
+		value = size == 4 ? fdt32_to_cpu(*(const fdt32_t *)p) :
+			size == 2 ? (*p << 8) | p[1] : *p;
+		printf(fmt, value);
+	}
+
+	return 0;
+}
+
 /**
  * Displays data of a given length according to selected options
  *
@@ -66,12 +97,9 @@ static void report_error(const char *where, int err)
  */
 static int show_data(struct display_info *disp, const char *data, int len)
 {
-	int i, size;
-	const uint8_t *p = (const uint8_t *)data;
+	int size;
 	const char *s;
-	int value;
 	int is_string;
-	char fmt[3];
 
 	/* no data, don't print */
 	if (len == 0)
@@ -99,17 +127,8 @@ static int show_data(struct display_info *disp, const char *data, int len)
 				"selected data size\n");
 		return -1;
 	}
-	fmt[0] = '%';
-	fmt[1] = disp->type ? disp->type : 'd';
-	fmt[2] = '\0';
-	for (i = 0; i < len; i += size, p += size) {
-		if (i)
-			printf(" ");
-		value = size == 4 ? fdt32_to_cpu(*(const fdt32_t *)p) :
-			size == 2 ? (*p << 8) | p[1] : *p;
-		printf(fmt, value);
-	}
-	return 0;
+
+	return show_cell_list(disp, data, len, size);
 }
 
 /**