Index: kernel/genarch/include/drivers/am335x/ctrl_module.h
===================================================================
--- kernel/genarch/include/drivers/am335x/ctrl_module.h	(revision f942226ea50c77249ed4d60ca7cfd1c318bfe104)
+++ kernel/genarch/include/drivers/am335x/ctrl_module.h	(revision fe6593b7a0db4b2a96d94af77e60e6b11687ef51)
@@ -51,4 +51,6 @@
 	unsigned const control_status = AM335x_CTRL_MODULE_REG_VALUE(base,
 	    CONTROL_STATUS);
+
+	/* Get the sysboot1 field at control_status[22,23] */
 	unsigned const sysboot1 = (control_status >> 22) & 0x03;