+ulong bootstage_mark_name(enum bootstage_id id, const char *name);
+
+/**
+ * Mark a time stamp in the given function and line number
+ *
+ * See BOOTSTAGE_MARKER() for a convenient macro.
+ *
+ * @param file Filename to record (NULL if none)
+ * @param func Function name to record
+ * @param linenum Line number to record
+ * @return recorded time stamp
+ */
+ulong bootstage_mark_code(const char *file, const char *func,
+ int linenum);
+
+/**
+ * Mark the start of a bootstage activity. The end will be marked later with
+ * bootstage_accum() and at that point we accumulate the time taken. Calling
+ * this function turns the given id into a accumulator rather than and
+ * absolute mark in time. Accumulators record the total amount of time spent
+ * in an activty during boot.
+ *
+ * @param id Bootstage id to record this timestamp against
+ * @param name Textual name to display for this id in the report (maybe NULL)
+ * @return start timestamp in microseconds
+ */
+uint32_t bootstage_start(enum bootstage_id id, const char *name);
+
+/**
+ * Mark the end of a bootstage activity
+ *
+ * After previously marking the start of an activity with bootstage_start(),
+ * call this function to mark the end. You can call these functions in pairs
+ * as many times as you like.
+ *
+ * @param id Bootstage id to record this timestamp against
+ * @return time spent in this iteration of the activity (i.e. the time now
+ * less the start time recorded in the last bootstage_start() call
+ * with this id.
+ */
+uint32_t bootstage_accum(enum bootstage_id id);
+
+/* Print a report about boot time */
+void bootstage_report(void);
+
+/**
+ * Add bootstage information to the device tree
+ *
+ * @return 0 if ok, -ve on error
+ */
+int bootstage_fdt_add_report(void);
+
+/**
+ * Stash bootstage data into memory
+ *
+ * @param base Base address of memory buffer
+ * @param size Size of memory buffer
+ * @return 0 if stashed ok, -1 if out of space
+ */
+int bootstage_stash(void *base, int size);
+
+/**
+ * Read bootstage data from memory
+ *
+ * Bootstage data is read from memory and placed in the bootstage table
+ * in the user records.
+ *
+ * @param base Base address of memory buffer
+ * @param size Size of memory buffer (-1 if unknown)
+ * @return 0 if unstashed ok, -ENOENT if bootstage info not found, -ENOSPC if
+ * there is not space for read the stacked data, or other error if
+ * something else went wrong
+ */
+int bootstage_unstash(const void *base, int size);
+
+/**
+ * bootstage_get_size() - Get the size of the bootstage data
+ *
+ * @return size of boostage data in bytes
+ */
+int bootstage_get_size(void);
+
+/**
+ * bootstage_init() - Prepare bootstage for use
+ *
+ * @first: true if this is the first time bootstage is set up. This causes it
+ * to add a 'reset' record with a time of 0.
+ */
+int bootstage_init(bool first);
+