RIOT/board/msb-430-common/board_config.c

#include <stdint.h>
#include <string.h>
#include <board-conf.h>
#include <config.h>
#include <flashrom.h>

void config_load(void) {
   if (*((uint16_t*) INFOMEM) ==  CONFIG_KEY) {
       memcpy(&sysconfig, (char*) (INFOMEM + sizeof(CONFIG_KEY)), sizeof(sysconfig));
   }
   else {
       config_save();
   }
}

uint8_t config_save(void) {
    configmem_t mem = { CONFIG_KEY, sysconfig  };
    return (flashrom_erase((uint8_t*) INFOMEM) && flashrom_write((uint8_t*) INFOMEM, (char*) &mem, sizeof(mem)));
}