- * Now, when we are in RAM, enable flash write access for detection process.
- * Note that CS_BOOT cannot be cleared when executing in flash.
+ * Now, when we are in RAM, enable flash write access for the
+ * detection process. Note that CS_BOOT cannot be cleared when
+ * executing in flash.
+ */
+ *(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
+
+#ifdef CONFIG_HW_WATCHDOG
+ /*
+ * Enable and configure the direction (output) of PSC3_9 - watchdog
+ * reset input. Refer to 7.3.2.2.[1,3,4] of the MPC5200B User's
+ * Manual.
+ */
+ *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC3_9;
+ *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC3_9;
+#endif /* CONFIG_HW_WATCHDOG */
+
+ /*
+ * Enable GPIO_WKUP_7 to "read the status of the actual power
+ * situation". Default direction is input, so no need to set it
+ * explicitly.