common: add prototype & rename populate_serial_number()
Rename populate_serial_number() to a more descriptive
serial_read_from_eeprom() and provide the missing function prototype.
This is useful for boards that wish to read their serial number from
EEPROM at init.
Signed-off-by: Artur Rojek <artur@conclusive.pl>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/init.h b/include/init.h
index 4e7fe26..d57a24f 100644
--- a/include/init.h
+++ b/include/init.h
@@ -271,6 +271,20 @@
int cpu_init_r(void);
int mac_read_from_eeprom(void);
+
+/**
+ * serial_read_from_eeprom - read the serial number from EEPROM
+ *
+ * This function reads the serial number from the EEPROM and sets the
+ * appropriate environment variable.
+ *
+ * The environment variable is only set if it has not been set
+ * already. This ensures that any user-saved variables are never
+ * overwritten.
+ *
+ * This function must be called after relocation.
+ */
+int serial_read_from_eeprom(int devnum);
int set_cpu_clk_info(void);
int update_flash_size(int flash_size);
int arch_early_init_r(void);