MLECO-1982: Update to using latest ethos-u embedded components

Change-Id: I744a4eb2553207004c9403b956e5bd9e9b352bfb
Signed-off-by: Isabella Gottardi <isabella.gottardi@arm.com>

17 files changed, 71 insertions, 59 deletions

diff --git a/Readme.md b/Readme.md
index 332a51c..63efa70 100644
--- a/Readme.md
+++ b/Readme.md
@@ -27,11 +27,11 @@ The example application at your disposal and the utilized models are listed in t
 
 |   ML application                     |  Description | Neural Network Model |
 | :----------------------------------: | :-----------------------------------------------------: | :----: |
-|  [Image classification](./docs/use_cases/img_class.md)        | Recognize the presence of objects in a given image | [Mobilenet V2](https://github.com/ARM-software/ML-zoo/tree/master/models/image_classification/mobilenet_v2_1.0_224/tflite_int8)   |
-|  [Keyword spotting(KWS)](./docs/use_cases/kws.md)             | Recognize the presence of a key word in a recording | [DS-CNN-L](https://github.com/ARM-software/ML-zoo/blob/master/models/keyword_spotting/ds_cnn_large/tflite_clustered_int8) |
-|  [Automated Speech Recognition(ASR)](./docs/use_cases/asr.md) | Transcribe words in a recording | [Wav2Letter](https://github.com/ARM-software/ML-zoo/blob/master/models/speech_recognition/wav2letter/tflite_int8) |
-|  [KWS and ASR](./docs/use_cases/kws_asr.md) | Utilise Cortex-M and Ethos-U to transcribe words in a recording after a keyword was spotted | [DS-CNN-L](https://github.com/ARM-software/ML-zoo/blob/master/models/keyword_spotting/ds_cnn_large/tflite_clustered_int8)  [Wav2Letter](https://github.com/ARM-software/ML-zoo/blob/master/models/speech_recognition/wav2letter/tflite_int8) |
-|  [Anomaly Detection](./docs/use_cases/ad.md)                 | Detecting abnormal behavior based on a sound recording of a machine | [Anomaly Detection](https://github.com/ARM-software/ML-zoo/raw/7c32b097f7d94aae2cd0b98a8ed5a3ba81e66b18/models/anomaly_detection/micronet_medium/tflite_int8/ad_medium_int8.tflite)|
+|  [Image classification](./docs/use_cases/img_class.md)        | Recognize the presence of objects in a given image | [Mobilenet V2](https://github.com/ARM-software/ML-zoo/tree/e0aa361b03c738047b9147d1a50e3f2dcb13dbcb/models/image_classification/mobilenet_v2_1.0_224/tflite_int8)   |
+|  [Keyword spotting(KWS)](./docs/use_cases/kws.md)             | Recognize the presence of a key word in a recording | [DS-CNN-L](https://github.com/ARM-software/ML-zoo/tree/68b5fbc77ed28e67b2efc915997ea4477c1d9d5b/models/keyword_spotting/ds_cnn_large/tflite_clustered_int8) |
+|  [Automated Speech Recognition(ASR)](./docs/use_cases/asr.md) | Transcribe words in a recording | [Wav2Letter](https://github.com/ARM-software/ML-zoo/tree/1a92aa08c0de49a7304e0a7f3f59df6f4fd33ac8/models/speech_recognition/wav2letter/tflite_int8) |
+|  [KWS and ASR](./docs/use_cases/kws_asr.md) | Utilise Cortex-M and Ethos-U to transcribe words in a recording after a keyword was spotted | [DS-CNN-L](https://github.com/ARM-software/ML-zoo/tree/68b5fbc77ed28e67b2efc915997ea4477c1d9d5b/models/keyword_spotting/ds_cnn_large/tflite_clustered_int8)  [Wav2Letter](https://github.com/ARM-software/ML-zoo/tree/1a92aa08c0de49a7304e0a7f3f59df6f4fd33ac8/models/speech_recognition/wav2letter/tflite_int8) |
+|  [Anomaly Detection](./docs/use_cases/ad.md)                 | Detecting abnormal behavior based on a sound recording of a machine | [Anomaly Detection](https://github.com/ARM-software/ML-zoo/tree/7c32b097f7d94aae2cd0b98a8ed5a3ba81e66b18/models/anomaly_detection/micronet_medium/tflite_int8/)|
 | [Generic inference runner](./docs/use_cases/inference_runner.md) | Code block allowing you to develop your own use case for Ethos-U NPU | Your custom model |
 
 The above use cases implement end-to-end ML flow including data pre-processing and post-processing. They will allow you
diff --git a/dependencies/cmsis b/dependencies/cmsis
-Subproject 0d7e4fa7131241a17e23dfae18140e0b2e77728
+Subproject e9637de2b4cfd99cd5c93893d88593262d8660c
diff --git a/dependencies/core-driver b/dependencies/core-driver
-Subproject effc7aa8b9272fb20cdd1a7d1097818af70acc9
+Subproject d1ea036bd870663d737db9bfbb25e2aa04a389e
diff --git a/dependencies/core-software b/dependencies/core-software
-Subproject 7f3c1c92732b611a53968b14e70a2b116e43b98
+Subproject 8b1d9ded33ec59545897ff45019d05403dba7ee
diff --git a/docs/documentation.md b/docs/documentation.md
index c1b1f3b..b9b0f91 100644
--- a/docs/documentation.md
+++ b/docs/documentation.md
@@ -33,7 +33,7 @@ Before starting the setup process, please make sure that you have:
 - At least one of the following toolchains:
   - GNU Arm Embedded toolchain (version 10.2.1 or above) -
   [GNU Arm Embedded toolchain downloads](https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads)
-  - Arm Compiler (version 6.14 or above) with a valid license -
+  - Arm Compiler (version 6.15 or above) with a valid license -
   [Arm Compiler download Page](https://developer.arm.com/tools-and-software/embedded/arm-compiler/downloads/)
 
 - An Arm® MPS3 FPGA prototyping board and components for FPGA evaluation or a `Fixed Virtual Platform` binary:
diff --git a/docs/quick_start.md b/docs/quick_start.md
index 878bdcf..ff260e1 100644
--- a/docs/quick_start.md
+++ b/docs/quick_start.md
@@ -143,7 +143,7 @@ mv resources_downloaded/inference_runner/dnn_s_quantized_vela.tflite resources_d
     --memory-mode=Shared_Sram \
     --system-config=Ethos_U55_High_End_Embedded \
     --output-dir=resources_downloaded/img_class
-mv resources_downloaded/img_class/mobilenet_v2_1.0_224_INT8.tflite_vela.tflite resources_downloaded/img_class/mobilenet_v2_1.0_224_INT8.tflite_vela_H128.tflite
+mv resources_downloaded/img_class/mobilenet_v2_1.0_224_INT8_vela.tflite resources_downloaded/img_class/mobilenet_v2_1.0_224_INT8_vela_H128.tflite
 
 . resources_downloaded/env/bin/activate && vela resources_downloaded/asr/wav2letter_int8.tflite \
     --accelerator-config=ethos-u55-128 \
diff --git a/docs/use_cases/ad.md b/docs/use_cases/ad.md
index a8476bd..84a601c 100644
--- a/docs/use_cases/ad.md
+++ b/docs/use_cases/ad.md
@@ -335,7 +335,6 @@ What the preceding choices do:
 4. Show NN model info: Prints information about the model data type, input, and output, tensor sizes:
 
     ```log
-    INFO - uTFL version: 2.5.0
     INFO - Model info:
     INFO - Model INPUT tensors:
     INFO -  tensor type is INT8
diff --git a/docs/use_cases/asr.md b/docs/use_cases/asr.md
index 134a706..9863ce6 100644
--- a/docs/use_cases/asr.md
+++ b/docs/use_cases/asr.md
@@ -398,7 +398,6 @@ What the preceding choices do:
 4. Show NN model info: Prints information about the model data type, input, and output, tensor sizes:
 
     ```log
-    INFO - uTFL version: 2.5.0
     INFO - Model info:
     INFO - Model INPUT tensors:
     INFO -  tensor type is INT8
diff --git a/docs/use_cases/kws.md b/docs/use_cases/kws.md
index 13ce7c3..d490f2b 100644
--- a/docs/use_cases/kws.md
+++ b/docs/use_cases/kws.md
@@ -365,7 +365,6 @@ What the preceding choices do:
 4. Show NN model info: Prints information about the model data type, input, and output, tensor sizes:
 
     ```log
-    INFO - uTFL version: 2.5.0
     INFO - Model info:
     INFO - Model INPUT tensors:
     INFO -  tensor type is INT8
diff --git a/docs/use_cases/kws_asr.md b/docs/use_cases/kws_asr.md
index 8d7b396..80e5265 100644
--- a/docs/use_cases/kws_asr.md
+++ b/docs/use_cases/kws_asr.md
@@ -456,7 +456,6 @@ What the preceding choices do:
 4. Show NN model info: Prints information about the model data type, input, and output, tensor sizes:
 
     ```log
-    INFO - uTFL version: 2.5.0
     INFO - Model INPUT tensors:
     INFO -  tensor type is INT8
     INFO -  tensor occupies 490 bytes with dimensions
diff --git a/download_dependencies.py b/download_dependencies.py
index b22c63f..9d2e6fa 100755
--- a/download_dependencies.py
+++ b/download_dependencies.py
@@ -25,13 +25,10 @@ import tempfile
 from urllib.request import urlopen
 from zipfile import ZipFile
 
-logging.basicConfig(filename='download_dependencies.log', level=logging.DEBUG)
-logging.getLogger().addHandler(logging.StreamHandler(sys.stdout))
-
-tf = "https://github.com/tensorflow/tensorflow/archive/6cff09aee1f832d495b3cae40cab0de58155a0af.zip"
-cmsis = "https://github.com/ARM-software/CMSIS_5/archive/0d7e4fa7131241a17e23dfae18140e0b2e77728f.zip"
-ethos_u_core_sw = "https://git.mlplatform.org/ml/ethos-u/ethos-u-core-software.git/snapshot/ethos-u-core-software-7f3c1c92732b611a53968b14e70a2b116e43b980.tar.gz"
-ethos_u_core_driver = "https://git.mlplatform.org/ml/ethos-u/ethos-u-core-driver.git/snapshot/ethos-u-core-driver-effc7aa8b9272fb20cdd1a7d1097818af70acc93.tar.gz"
+tf = "https://github.com/tensorflow/tflite-micro/archive/f510d38d0eaa3195ce3af66e3f32648740f08afb.zip"
+cmsis = "https://github.com/ARM-software/CMSIS_5/archive/e9637de2b4cfd99cd5c93893d88593262d8660c1.zip"
+ethos_u_core_sw = "https://git.mlplatform.org/ml/ethos-u/ethos-u-core-software.git/snapshot/ethos-u-core-software-8b1d9ded33ec59545897ff45019d05403dba7eee.tar.gz"
+ethos_u_core_driver = "https://git.mlplatform.org/ml/ethos-u/ethos-u-core-driver.git/snapshot/ethos-u-core-driver-d1ea036bd870663d737db9bfbb25e2aa04a389e0.tar.gz"
 
 
 def download(url_file: str, post_process=None):
@@ -84,6 +81,9 @@ def main(dependencies_path: str):
 
 
 if __name__ == '__main__':
+    logging.basicConfig(filename='download_dependencies.log', level=logging.DEBUG)
+    logging.getLogger().addHandler(logging.StreamHandler(sys.stdout))
+
     download_dir = os.path.abspath(os.path.join(os.path.dirname(os.path.abspath(__file__)), "dependencies"))
 
     if os.path.isdir(download_dir):
diff --git a/release_notes.txt b/release_notes.txt
index 1b2ced7..62618a5 100644
--- a/release_notes.txt
+++ b/release_notes.txt
@@ -1,17 +1,24 @@
+Changes in 21.08
+    * Support for 21.05 Ethos-U component (core-software, core-driver, Vela 3.0.0).
+    * TensorFlow submodule changed to https://github.com/tensorflow/tflite-micro (tested with TensorFlow Lite Micro commit hash: f510d38d0eaa3195ce3af66e3f32648740f08afb).
+    * Image classification model changed (from uint8 to int8 datatype).
+    * Documentation updates, added support to Corstone-300 + Ethos-U65.
+    * Various scripts improvements.
+
 Changes in 21.05
     * Added script to download and optimize default models.
     * Added script to run default build flow.
     * Added a model for Anomaly Detection use case.
-    * added support for build with Arm GNU Embedded Toolchain (10.2.1).
-    * deprecated support for target subsystem SSE-200.
+    * Added support for build with Arm GNU Embedded Toolchain (10.2.1).
+    * Deprecated support for target subsystem SSE-200.
 
 Changes in 21.03
-    * simple platform support added.
-    * model conditioning examples added.
-    * documentation updated.
-    * build changed to use sources of the dependency libraries.
-    * tests for native platform added.
-    * anomaly detection use case added.
+    * Simple platform support added.
+    * Model conditioning examples added.
+    * Documentation updated.
+    * Build changed to use sources of the dependency libraries.
+    * Tests for native platform added.
+    * Anomaly detection use-case added.
 
 Changes in 20.11
     * SSE-200 and SSE-300 system support was added.
diff --git a/scripts/cmake/toolchains/bare-metal-armclang.cmake b/scripts/cmake/toolchains/bare-metal-armclang.cmake
index 0a86eb6..d07aa9e 100644
--- a/scripts/cmake/toolchains/bare-metal-armclang.cmake
+++ b/scripts/cmake/toolchains/bare-metal-armclang.cmake
@@ -25,7 +25,7 @@ set(CMAKE_ASM_COMPILER_AR           armar)
 set(CMAKE_CROSSCOMPILING            true)
 set(CMAKE_SYSTEM_NAME               Generic)
 
-set(MIN_ARM_CLANG_VERSION           6.14)
+set(MIN_ARM_CLANG_VERSION           6.15)
 
 # Skip compiler test execution
 set(CMAKE_C_COMPILER_WORKS          1)
diff --git a/scripts/make/cortex_m_ethos_eval_makefile.inc b/scripts/make/cortex_m_ethos_eval_makefile.inc
index dbb460d..407bc85 100644
--- a/scripts/make/cortex_m_ethos_eval_makefile.inc
+++ b/scripts/make/cortex_m_ethos_eval_makefile.inc
@@ -117,12 +117,6 @@ ifeq ($(TARGET),$(filter $(TARGET), cortex_m_ethos_eval))
     MICROLITE_LIBS := $(filter-out -lm,$(MICROLITE_LIBS))
 
   else ifeq ($(TOOLCHAIN), gcc)
-    export PATH := $(MAKEFILE_DIR)/downloads/gcc_embedded/bin/:$(PATH)
-    DOWNLOAD_RESULT := $(shell $(MAKEFILE_DIR)/arm_gcc_download.sh ${MAKEFILE_DIR}/downloads)
-    ifneq ($(DOWNLOAD_RESULT), SUCCESS)
-      $(error Something went wrong with the GCC download: $(DOWNLOAD_RESULT))
-    endif
-
     TARGET_TOOLCHAIN_PREFIX := arm-none-eabi-
 
     FLAGS_GCC = -mcpu=$(GCC_TARGET_ARCH) -mfpu=auto
@@ -133,6 +127,16 @@ ifeq ($(TARGET),$(filter $(TARGET), cortex_m_ethos_eval))
     $(error "TOOLCHAIN=$(TOOLCHAIN) is not supported.")
   endif
 
+# TODO(#47718): resolve warnings.
+CXX_OMIT_ERRORS = \
+  -Wno-implicit-fallthrough \
+  -Wno-unused-variable
+
+# TODO: Remove when Arm Ethos-U NPU driver is updated to version > 21.05
+CC_OMIT_ERRORS = \
+  ${CXX_OMIT_ERRORS} \
+  -Wno-int-conversion
+
   PLATFORM_FLAGS = \
     -DTF_LITE_MCU_DEBUG_LOG \
     -mthumb \
@@ -147,7 +151,7 @@ ifeq ($(TARGET),$(filter $(TARGET), cortex_m_ethos_eval))
     $(TARGET_SPECIFIC_FLAGS)
 
   # Common + C/C++ flags
-  CXXFLAGS += $(PLATFORM_FLAGS)
-  CCFLAGS += $(PLATFORM_FLAGS)
+  CXXFLAGS += $(PLATFORM_FLAGS) ${CXX_OMIT_ERRORS}
+  CCFLAGS += $(PLATFORM_FLAGS) ${CC_OMIT_ERRORS}
 
 endif
diff --git a/source/application/hal/platforms/bare-metal/bsp/bsp-packs/mps3/uart_stdout.c b/source/application/hal/platforms/bare-metal/bsp/bsp-packs/mps3/uart_stdout.c
index ed12c8b..3211c4d 100644
--- a/source/application/hal/platforms/bare-metal/bsp/bsp-packs/mps3/uart_stdout.c
+++ b/source/application/hal/platforms/bare-metal/bsp/bsp-packs/mps3/uart_stdout.c
@@ -111,6 +111,10 @@ bool GetLine(char *lp, unsigned int len)
                 lp++;                           /* Increment line pointer         */
                 cnt++;                          /* and count.                     */
                 c = LF;
+                UartPutc (*lp = c);             /* Echo and store character.      */
+                fflush (stdout);
+                lp++;                           /* Increment line pointer         */
+                    cnt++;                      /* and count.                     */
                 break;
             default:
                 UartPutc (*lp = c);             /* Echo and store character.      */
diff --git a/source/application/hal/platforms/bare-metal/bsp/bsp-packs/simple_platform/uart_pl011.c b/source/application/hal/platforms/bare-metal/bsp/bsp-packs/simple_platform/uart_pl011.c
index b2dee14..1cbf70c 100644
--- a/source/application/hal/platforms/bare-metal/bsp/bsp-packs/simple_platform/uart_pl011.c
+++ b/source/application/hal/platforms/bare-metal/bsp/bsp-packs/simple_platform/uart_pl011.c
@@ -199,11 +199,15 @@ bool GetLine (char *lp, unsigned int len)
             case 0:
                 *lp = 0;                       /* ESC - stop editing line.       */
                 return false;
-            case CR:                            /* CR - done, stop editing line.  */
+            case CR:                            /* CR - done, stop editing line. */
+                UartPutc (*lp = c);             /* Echo and store character.     */
+                lp++;                           /* Increment line pointer        */
+                cnt++;                          /* and count.                    */
+                c = LF;
                 UartPutc (*lp = c);             /* Echo and store character.      */
+                fflush (stdout);
                 lp++;                           /* Increment line pointer         */
                 cnt++;                          /* and count.                     */
-                c = LF;
                 break;
             default:
                 UartPutc (*lp = c);            /* echo and store character.      */
diff --git a/source/application/hal/platforms/bare-metal/timer/baremetal_timer.c b/source/application/hal/platforms/bare-metal/timer/baremetal_timer.c
index 00028bd..c8e7252 100644
--- a/source/application/hal/platforms/bare-metal/timer/baremetal_timer.c
+++ b/source/application/hal/platforms/bare-metal/timer/baremetal_timer.c
@@ -25,6 +25,8 @@
 
 #include "pmu_ethosu.h"
 
+extern struct ethosu_driver ethosu_drv; /* Default Ethos-U55 device driver */
+
 /**
  * @brief Initialises the PMU and enables the cycle counter.
  **/
@@ -183,30 +185,25 @@ void init_timer(platform_timer *timer)
 }
 
 #if defined (ARM_NPU)
-
-static void _reset_ethosu_counters(void)
+static void _reset_ethosu_counters()
 {
     /* Reset all cycle and event counters. */
-    ETHOSU_PMU_CYCCNT_Reset();
-    ETHOSU_PMU_EVCNTR_ALL_Reset();
+    ETHOSU_PMU_CYCCNT_Reset(&ethosu_drv);
+    ETHOSU_PMU_EVCNTR_ALL_Reset(&ethosu_drv);
 }
-
-static void _init_ethosu_cyclecounter(void)
+static void _init_ethosu_cyclecounter()
 {
     /* Reset overflow status. */
-    ETHOSU_PMU_Set_CNTR_OVS(ETHOSU_PMU_CNT1_Msk | ETHOSU_PMU_CCNT_Msk);
-
+    ETHOSU_PMU_Set_CNTR_OVS(&ethosu_drv, ETHOSU_PMU_CNT1_Msk | ETHOSU_PMU_CCNT_Msk);
     /* We can retrieve only 4 PMU counters: */
-    ETHOSU_PMU_Set_EVTYPER(0, ETHOSU_PMU_NPU_IDLE);
-    ETHOSU_PMU_Set_EVTYPER(1, ETHOSU_PMU_AXI0_RD_DATA_BEAT_RECEIVED);
-    ETHOSU_PMU_Set_EVTYPER(2, ETHOSU_PMU_AXI0_WR_DATA_BEAT_WRITTEN);
-    ETHOSU_PMU_Set_EVTYPER(3, ETHOSU_PMU_AXI1_RD_DATA_BEAT_RECEIVED);
-
+    ETHOSU_PMU_Set_EVTYPER(&ethosu_drv, 0, ETHOSU_PMU_NPU_IDLE);
+    ETHOSU_PMU_Set_EVTYPER(&ethosu_drv, 1, ETHOSU_PMU_AXI0_RD_DATA_BEAT_RECEIVED);
+    ETHOSU_PMU_Set_EVTYPER(&ethosu_drv, 2, ETHOSU_PMU_AXI0_WR_DATA_BEAT_WRITTEN);
+    ETHOSU_PMU_Set_EVTYPER(&ethosu_drv, 3, ETHOSU_PMU_AXI1_RD_DATA_BEAT_RECEIVED);
     /* Enable PMU. */
-    ETHOSU_PMU_Enable();
-
+    ETHOSU_PMU_Enable(&ethosu_drv);
     /* Enable counters for cycle and counter# 0. */
-    ETHOSU_PMU_CNTR_Enable(ETHOSU_PMU_CNT1_Msk | ETHOSU_PMU_CNT2_Msk | ETHOSU_PMU_CNT3_Msk | ETHOSU_PMU_CNT4_Msk| ETHOSU_PMU_CCNT_Msk);
+    ETHOSU_PMU_CNTR_Enable(&ethosu_drv, ETHOSU_PMU_CNT1_Msk | ETHOSU_PMU_CNT2_Msk | ETHOSU_PMU_CNT3_Msk | ETHOSU_PMU_CNT4_Msk| ETHOSU_PMU_CCNT_Msk);
     _reset_ethosu_counters();
 }
 
@@ -235,7 +232,7 @@ static uint32_t counter_overflow(uint32_t pmu_counter_mask)
 {
     /* Check for overflow: The idle counter is 32 bit while the
        total cycle count is 64 bit. */
-    const uint32_t overflow_status = ETHOSU_PMU_Get_CNTR_OVS();
+    const uint32_t overflow_status = ETHOSU_PMU_Get_CNTR_OVS(&ethosu_drv);
     return pmu_counter_mask & overflow_status;
 }
 
@@ -298,11 +295,11 @@ static time_counter bm_get_time_counter(void)
         .counter = get_time_counter(),
 
 #if defined (ARM_NPU)
-            .npu_total_ccnt = ETHOSU_PMU_Get_CCNTR(),
-            .npu_idle_ccnt = ETHOSU_PMU_Get_EVCNTR(0),
-            .npu_axi0_read_beats = ETHOSU_PMU_Get_EVCNTR(1),
-            .npu_axi0_write_beats = ETHOSU_PMU_Get_EVCNTR(2),
-            .npu_axi1_read_beats = ETHOSU_PMU_Get_EVCNTR(3)
+            .npu_total_ccnt = ETHOSU_PMU_Get_CCNTR(&ethosu_drv),
+            .npu_idle_ccnt = ETHOSU_PMU_Get_EVCNTR(&ethosu_drv, 0),
+            .npu_axi0_read_beats = ETHOSU_PMU_Get_EVCNTR(&ethosu_drv, 1),
+            .npu_axi0_write_beats = ETHOSU_PMU_Get_EVCNTR(&ethosu_drv, 2),
+            .npu_axi1_read_beats = ETHOSU_PMU_Get_EVCNTR(&ethosu_drv, 3)
 #endif /* defined (ARM_NPU) */
 
     };