-#define AT91C_MAIN_CLOCK 179712000
-#define AT91C_MASTER_CLOCK 59904000
-
-#define AT91_SLOW_CLOCK 32768
-
-#define CONFIG_ARM920T 1
-#define CONFIG_AT91RM9200 1
-#define CONFIG_CPUAT91 1
+#define AT91C_XTAL_CLOCK 18432000
+#define CONFIG_SYS_AT91_SLOW_CLOCK 32768
+#define AT91C_MAIN_CLOCK ((AT91C_XTAL_CLOCK / 4) * 39)
+#define AT91C_MASTER_CLOCK (AT91C_MAIN_CLOCK / 3)
+#define CONFIG_SYS_HZ_CLOCK (AT91C_MASTER_CLOCK / 2)
+#define CONFIG_SYS_HZ 1000