MLECO-3096: Removing "timer" from HAL profile.

Attempting to have timer functionality contained within
the platform drivers "package" as it should (in line with
the refactoring work done so far under HAL). This will
ensure that we don't need two timer implementations under
HAL "profiles" and therefore, this whole directory can be
removed.

This change also addressed issue with the applicatio level
Profiler code knowing about how the PMU has been set up by
the platform code. This link has been removed completely.
This will make it much easier to add/amend the Ethos-U PMU
event counters types and give each platform the capability
of populating their relvant counters. The application level
Profiler doesn't know which metrics it is displaying but
just calculates and maintains statistics for whatever PMU
counters it receives from the HAL level.

A fix for timing adapter issue introduced in the last CR
is also included.

Change-Id: Ia46e03a06e7b8e42b9ed2ba8f2af2dcd2229c110
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>
diff --git a/source/hal/source/platform/mps3/include/timer_mps3.h b/source/hal/source/platform/mps3/include/timer_mps3.h
index e1faf69..b370e89 100644
--- a/source/hal/source/platform/mps3/include/timer_mps3.h
+++ b/source/hal/source/platform/mps3/include/timer_mps3.h
@@ -17,10 +17,17 @@
 #ifndef TIMER_MPS3_H
 #define TIMER_MPS3_H
 
+#include "platform_pmu.h"
+
 #include <stdint.h>
+#include <stdbool.h>
+
+#if defined (ARM_NPU)
+    #include "ethosu_profiler.h"    /* Arm Ethos-U NPU profiling functions. */
+#endif /* defined (ARM_NPU) */
 
 /* Container for timestamp up-counters. */
-typedef struct _mps3_time_counter {
+typedef struct mps3_pmu_counters_ {
     uint32_t    counter_1Hz;
     uint32_t    counter_100Hz;
 
@@ -29,8 +36,18 @@
 
     /* Running at processor core's internal clock rate, triggered by SysTick. */
     uint64_t    counter_systick;
-} base_time_counter;
+} mps3_pmu_counters;
 
+/**
+ * @brief   Resets the counters.
+ */
+void platform_reset_counters(void);
+
+/**
+ * @brief   Gets the current counter values.
+ * @returns A populated instance of pmu_counters struct.
+ **/
+pmu_counters platform_get_counters(void);
 
 /**
  * @brief  Gets the MPS3 core clock
@@ -39,57 +56,6 @@
 uint32_t get_mps3_core_clock(void);
 
 /**
- * @brief   Resets the counters.
- */
-void timer_reset(void);
-
-/**
- * @brief   Gets the current counter values.
- * @returns Mps3 timer counter.
- **/
-base_time_counter get_time_counter(void);
-
-/**
- * @brief       Gets the duration elapsed between two counters in milliseconds.
- * @param[in]   start   Pointer to base_time_counter value at start time.
- * @param[in]   end     Pointer to base_time_counter value at end.
- * @returns     Difference in milliseconds between the two give counters
- *              expressed as an unsigned integer.
- **/
-uint32_t get_duration_milliseconds(base_time_counter *start,
-                                   base_time_counter *end);
-
-/**
- * @brief       Gets the duration elapsed between two counters in microseconds.
- * @param[in]   start   Pointer to base_time_counter value at start time.
- * @param[in]   end     Pointer to base_time_counter value at end.
- * @returns     Difference in microseconds between the two give counters
- *              expressed as an unsigned integer.
- **/
-uint32_t get_duration_microseconds(base_time_counter *start,
-                                   base_time_counter *end);
-
-/**
- * @brief       Gets the cycle counts elapsed between start and end.
- * @param[in]   start   Pointer to base_time_counter value at start time.
- * @param[in]   end     Pointer to base_time_counter value at end.
- * @return      Difference in counter values as 32 bit unsigned integer.
- **/
-uint64_t get_cycle_count_diff(base_time_counter *start,
-                              base_time_counter *end);
-
-/**
- * @brief   Enables or triggers cycle counting mechanism, if required
- *          by the platform.
- **/
-void start_cycle_counter(void);
-
-/**
- * @brief   Stops cycle counting mechanism, if required by the platform.
- **/
-void stop_cycle_counter(void);
-
-/**
  * @brief   System tick interrupt handler.
  **/
 void SysTick_Handler(void);