audio: microwakeword: add mww component

app/boards/intel_adsp_ace15_mtpm.conf

@@ -17,6 +17,12 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_SAMPLE_KEYPHRASE=y
 CONFIG_COMP_PHASE_VOCODER=y
 CONFIG_COMP_STFT_PROCESS=y
+CONFIG_SOF_STAGING=y
+CONFIG_CPP=y
+CONFIG_STD_CPP17=y
+CONFIG_COMP_TENSORFLOW=n
+CONFIG_COMP_MWW=m
+CONFIG_STACK_SIZE_EDF=32768
 
 # SOF / audio modules / mocks
 # This mock is part of official sof-bin releases because the CI that
@@ -57,6 +63,7 @@ CONFIG_LLEXT=y
 CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y
 CONFIG_LLEXT_EDK=n
+CONFIG_LLEXT_HEAP_SIZE=64
 CONFIG_MODULES=y
 CONFIG_TIMING_FUNCTIONS=y
 CONFIG_WATCHDOG=y

app/boards/intel_adsp_ace30_ptl.conf

@@ -15,6 +15,21 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
 CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
 CONFIG_COMP_STFT_PROCESS=y
+CONFIG_SOF_STAGING=y
+CONFIG_COMP_KPB=y
+CONFIG_CPP=y
+CONFIG_STD_CPP17=y
+# tflmcly (stock keyword model) is not yet GNU-toolchain-clean on aphid
+# (undefined sof_ut_log/__assert_no_args/abs); not required by mww, which
+# builds its own independent TFLM lib copy. Disabled here to unblock the
+# aphid mww LLEXT build.
+CONFIG_COMP_TENSORFLOW=n
+CONFIG_COMP_MFCC=y
+CONFIG_COMP_MWW=m
+CONFIG_AMS=y
+CONFIG_STACK_SIZE_EDF=32768
+CONFIG_COMP_VOLUME=y
+CONFIG_COMP_GAIN=y
 
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n
@@ -29,7 +44,7 @@ CONFIG_COLD_STORE_EXECUTE_DRAM=y
 CONFIG_INTEL_MODULES=y
 CONFIG_LIBRARY_AUTH_SUPPORT=y
 CONFIG_LIBRARY_MANAGER=y
-CONFIG_LIBRARY_BASE_ADDRESS=0xa0688000
+CONFIG_LIBRARY_BASE_ADDRESS=0xa0700000
 CONFIG_LIBRARY_BUILD_LIB=y
 CONFIG_LIBRARY_DEFAULT_MODULAR=y
 
@@ -38,11 +53,19 @@ CONFIG_SOF_LOG_LEVEL_INF=y
 
 # Zephyr / OS features
 CONFIG_COUNTER=y
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=32768
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=32768
 CONFIG_LLEXT=y
 CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y
 CONFIG_LLEXT_EDK=n
+
+# Default LLEXT metadata heap (CONFIG_LLEXT_HEAP_SIZE, 8 KB) is sized for
+# small extensions with few STB_GLOBAL-only exported symbols. mww.llext
+# links in TFLM, whose template-instantiated vtables/typeinfo are emitted
+# STB_WEAK -- now included in ext->sym_tab after the llext_load.c fix -- and
+# blows past 8 KB (Failed to allocate extension symbol table, ret -12).
+CONFIG_LLEXT_HEAP_SIZE=256
 CONFIG_MODULES=y
 
 # Zephyr / device drivers
@@ -78,3 +101,8 @@ CONFIG_SOF_USERSPACE_PROXY=y
 CONFIG_MAX_THREAD_BYTES=3
 
 CONFIG_MAX_DOMAIN_PARTITIONS=32
+
+# Debug: get faulting virtual address for openmodules-load panic
+# CONFIG_XTENSA_ADSP_FATAL_BREADCRUMB_DATA_VADDR=y
+CONFIG_SYS_HEAP_RUNTIME_STATS=y
+CONFIG_SOF_ZEPHYR_HEAP_SIZE=0x80000

app/boards/intel_adsp_cavs25.conf

@@ -12,6 +12,14 @@ CONFIG_COMP_MFCC=y
 CONFIG_COMP_MULTIBAND_DRC=y
 CONFIG_COMP_VOLUME_WINDOWS_FADE=y
 CONFIG_FORMAT_CONVERT_HIFI3=n
+CONFIG_SOF_STAGING=y
+CONFIG_CPP=y
+CONFIG_STD_CPP17=y
+# cavs2.5 has no LLEXT/module-manager support (see CONFIG_LIBRARY_MANAGER=n
+# below), so build mww in statically rather than as an LLEXT module.
+CONFIG_COMP_MWW=y
+CONFIG_COMP_MWW_DEBUG_TRACE=y
+CONFIG_STACK_SIZE_EDF=32768
 CONFIG_PCM_CONVERTER_FORMAT_S16LE=y
 CONFIG_PCM_CONVERTER_FORMAT_S24LE=y
 CONFIG_PCM_CONVERTER_FORMAT_S32LE=y
@@ -33,7 +41,8 @@ CONFIG_SOF_LOG_LEVEL_INF=y
 CONFIG_DEBUG_COREDUMP=y
 CONFIG_DEBUG_COREDUMP_BACKEND_INTEL_ADSP_MEM_WINDOW=y
 CONFIG_DEBUG_COREDUMP_MEMORY_DUMP_MIN=y
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=32768
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=32768
 
 # Zephyr / device drivers
 CONFIG_DAI_INIT_PRIORITY=70

app/llext_relocatable.conf

@@ -1 +1,2 @@
 CONFIG_LLEXT_TYPE_ELF_RELOCATABLE=y
+CONFIG_LLEXT_EXPORT_BUILTINS_BY_SLID=y

scripts/llext_offset_calc.py

@@ -47,6 +47,9 @@ def get_elf_size(elf_name):
 			if section.header['sh_addr'] + section.header['sh_size'] > end:
 				end = section.header['sh_addr'] + section.header['sh_size']
 
+		if start == 0xffffffff:
+			return 0
+
 		size = end - start
 
 	return size

scripts/tensorflow-clone.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright(c) 2025 Intel Corporation. All rights reserved.
+# Copyright(c) 2025-2026 Intel Corporation. All rights reserved.
 
 # fail immediately on any errors
 set -e
@@ -14,8 +14,7 @@ declare -a REPOS=(
     "https://github.com/google/ruy"
 )
 
-# Commit ID to check for (optional). If specified, the script will update
-# the repository if this commit ID is not found.  Leave empty to skip.
+# Commit ID to check out. If specified, the script will checkout this commit.
 declare -a COMMIT_ID=(
     "cdedfb1a1044eb774915de21b63a1b6aa93276f6"
     "e86d97b6237f88ab5925c0b41e3e3589a1560d86"
@@ -25,7 +24,10 @@ declare -a COMMIT_ID=(
 )
 
 # Directory where repositories will be cloned/updated.
-BASE_DIR="$HOME/work/sof"  # Or any other desired location
+# Default to the parent directory containing the SOF workspace.
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SOF_PARENT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
+BASE_DIR="${1:-"$SOF_PARENT_DIR"}"
 
 # Function to check if a commit ID exists in a repository
 check_commit() {
@@ -36,40 +38,65 @@ check_commit() {
         return 0  # Skip check if no commit ID is provided
     fi
 
-    if ! git -C "$repo_dir" rev-parse --quiet --verify "$commit_id" >/dev/null 2>&1; then
-        return 1  # Commit ID not found
+    if ! git -C "$repo_dir" rev-parse --quiet --verify "$commit_id^{commit}" >/dev/null 2>&1; then
+        return 1  # Commit ID not found locally
     else
-        return 0  # Commit ID found
+        return 0  # Commit ID found locally
     fi
 }
 
-
 # Function to update the repository
 update_repo() {
     local repo_dir="$1"
     echo "Updating repository: $repo_dir"
-    git -C "$repo_dir" fetch --all
-    git -C "$repo_dir" pull
+    git -C "$repo_dir" fetch --all --tags --prune
+}
+
+# Function to checkout the required commit ID
+checkout_commit() {
+    local repo_dir="$1"
+    local commit_id="$2"
+    local repo_name="$3"
+
+    if [ -z "$commit_id" ]; then
+        return 0
+    fi
+
+    local current_commit
+    current_commit=$(git -C "$repo_dir" rev-parse HEAD)
+
+    local target_commit
+    target_commit=$(git -C "$repo_dir" rev-parse "$commit_id^{commit}")
+
+    if [ "$current_commit" != "$target_commit" ]; then
+        echo "Checking out $commit_id in $repo_name..."
+        git -C "$repo_dir" checkout -q "$commit_id"
+    else
+        echo "Repository $repo_name is already at commit $commit_id."
+    fi
 }
 
 # Main script logic
 mkdir -p "$BASE_DIR"
 
 for ((i = 0; i < ${#REPOS[@]}; i++)); do
-    echo "Counter: $i, Value: ${REPOS[i]}"
-    repo_url=${REPOS[i]}
-
-    repo_name=$(basename "$repo_url" .git)  # Extract repo name
+    repo_url="${REPOS[i]}"
+    commit_id="${COMMIT_ID[i]}"
+    repo_name=$(basename "$repo_url" .git)
     repo_dir="$BASE_DIR/$repo_name"
 
-    if [ ! -d "$repo_dir" ]; then
-        echo "Cloning repository: $repo_url"
+    echo "=== [$((i + 1))/${#REPOS[@]}] $repo_name ==="
+
+    if [ ! -d "$repo_dir/.git" ]; then
+        echo "Cloning repository: $repo_url -> $repo_dir"
         git clone "$repo_url" "$repo_dir" || { echo "git clone failed for $repo_url"; exit 1; }
-    elif ! check_commit "$repo_dir" "${COMMIT_ID[i]}"; then
+    fi
+
+    if ! check_commit "$repo_dir" "$commit_id"; then
         update_repo "$repo_dir"
-    else
-        echo "Repository $repo_name is up to date."
     fi
+
+    checkout_commit "$repo_dir" "$commit_id" "$repo_name"
 done
 
-echo "All repositories processed."
+echo "All repositories processed and checked out to required commits."

scripts/xtensa-build-zephyr.py

@@ -1174,6 +1174,10 @@ def install_lib(platform, sof_output_dir, abs_build_dir, platform_wconfig):
 				symlink_or_copy(lib_install_dir, lib_name,
 						lib_dir, alias_libname)
 
+		for uuid in lib_uuids.get(key, []):
+			linkname = uuid + '.bin'
+			symlink_or_copy(lib_install_dir, lib_name, sof_lib_dir, linkname)
+
 def install_platform(platform, sof_output_dir, platf_build_environ, platform_wconfig):
 
 	# Keep in sync with caller

src/audio/CMakeLists.txt

@@ -56,6 +56,9 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	if(CONFIG_COMP_MFCC)
 		add_subdirectory(mfcc)
 	endif()
+	if(CONFIG_COMP_MWW)
+		add_subdirectory(microwakeword)
+	endif()
 	if(CONFIG_COMP_MIXER)
 		add_subdirectory(mixer)
 	endif()

src/audio/Kconfig

@@ -142,6 +142,7 @@ rsource "eq_iir/Kconfig"
 rsource "google/Kconfig"
 rsource "igo_nr/Kconfig"
 rsource "mfcc/Kconfig"
+rsource "microwakeword/Kconfig"
 rsource "mixer/Kconfig"
 rsource "mixin_mixout/Kconfig"
 rsource "module_adapter/Kconfig"

src/audio/buffers/audio_buffer.c

@@ -24,7 +24,10 @@
 int audio_buffer_attach_secondary_buffer(struct sof_audio_buffer *buffer, bool at_input,
 					 struct sof_audio_buffer *secondary_buffer)
 {
-	if (buffer->secondary_buffer_sink || buffer->secondary_buffer_source)
+	/* check per-side: allow attaching on both sides (needed for DP-to-DP) */
+	if (at_input && buffer->secondary_buffer_sink)
+		return -EINVAL;
+	if (!at_input && buffer->secondary_buffer_source)
 		return -EINVAL;
 
 	/* secondary buffer must share audio params with the primary buffer */
@@ -48,6 +51,54 @@ int audio_buffer_sync_secondary_buffer(struct sof_audio_buffer *buffer, size_t l
 	struct sof_source *data_src;
 	struct sof_sink *data_dst;
 
+	if (buffer->secondary_buffer_sink && buffer->secondary_buffer_source) {
+		/*
+		 * DP-to-DP case: both secondary buffers present.
+		 * Data flows: input_ring_buffer -> comp_buffer -> output_ring_buffer
+		 *
+		 * This buffer is visited twice during each LL cycle:
+		 *  - In the input loop (sink DP module via comp_dev_for_each_producer) with
+		 *    limit == SIZE_MAX. In a DP-to-DP connection, input to sink DP is fed
+		 *    via output_ring_buffer; the intermediate comp_buffer transfer is driven
+		 *    by the output loop. Hence, this call is a no-op.
+		 *  - In the output loop (source DP module via comp_dev_for_each_consumer) with
+		 *    limit == source_get_min_available(downstream). This executes the 2-step
+		 *    cascade with rate-limiting properly applied on the output transfer.
+		 */
+		if (limit == SIZE_MAX)
+			return 0;
+
+		/*
+		 * Step 1: copy from input secondary buffer to primary (comp_buffer).
+		 * No limit on input side - copy all available data.
+		 */
+		data_src = audio_buffer_get_source(buffer->secondary_buffer_sink);
+		data_dst = &buffer->_sink_api;
+
+		size_t data_available = source_get_data_available(data_src);
+		size_t free_size = sink_get_free_size(data_dst);
+		size_t to_copy = MIN(data_available, free_size);
+
+		err = source_to_sink_copy(data_src, data_dst, true, to_copy);
+		if (err)
+			return err;
+
+		/*
+		 * Step 2: copy from primary (comp_buffer) to output secondary buffer.
+		 * Apply the limit to the output side to control how much data
+		 * is made available to the downstream DP module per LL cycle.
+		 */
+		data_src = &buffer->_source_api;
+		data_dst = audio_buffer_get_sink(buffer->secondary_buffer_source);
+
+		data_available = source_get_data_available(data_src);
+		free_size = sink_get_free_size(data_dst);
+		to_copy = MIN(MIN(data_available, free_size), limit);
+
+		err = source_to_sink_copy(data_src, data_dst, true, to_copy);
+		return err;
+	}
+
 	if (buffer->secondary_buffer_sink) {
 		/*
 		 * audio_buffer sink API is shadowed, that means there's a secondary_buffer
@@ -203,18 +254,16 @@ uint32_t audio_buffer_sink_get_lft(struct sof_sink *sink)
 	return us_in_buffer;
 
 	/*
-	 * TODO, Currently there's no DP to DP connection
-	 * >>> the code below is never accessible and won't work because of cache incoherence <<<
-	 *
-	 * to make DP to DP connection possible:
+	 * NOTE: DP-to-DP connections are now supported via dual ring_buffers
+	 * attached as secondary buffers on both sides of a comp_buffer.
+	 * Data cascades: ring_buf_src -> comp_buffer -> ring_buf_sink
+	 * with syncing during each LL cycle.
 	 *
-	 * 1) module data must be ALWAYS located in non cached memory alias, allowing
-	 *    cross core access to params like period (needed below) and calling
-	 *    module_get_deadline for the next module, regardless of cores the modules are
-	 *    running on
-	 * 2) comp_buffer must be removed from all pipeline code, replaced with a generic abstract
-	 *    class audio_buffer - allowing using comp_buffer and ring_buffer without current
-	 *    "hybrid buffer" solution
+	 * Future improvements:
+	 * 1) module data should be in non-cached memory alias for reliable
+	 *    cross-core access to params like period and deadlines
+	 * 2) comp_buffer should be replaced with generic audio_buffer
+	 *    throughout pipeline code (Pipeline 2.0)
 	 */
 }
 

src/audio/buffers/ring_buffer.c

@@ -86,7 +86,6 @@ static inline void ring_buffer_writeback_shared(struct ring_buffer *ring_buffer,
 	dcache_writeback_region(ptr, size);
 }
 
-
 /**
  * @brief remove the queue from the list, free memory
  */
@@ -101,6 +100,12 @@ static void ring_buffer_free(struct sof_audio_buffer *audio_buffer)
 
 	sof_ctx_free(alloc, (__sparse_force void *)ring_buffer->_data_buffer);
 	sof_ctx_free(alloc, ring_buffer);
+
+	/* matches vregion_get() in ipc_comp_connect() for each ring_buffer */
+	if (alloc && alloc->vreg) {
+		if (!vregion_put(alloc->vreg))
+			rfree(alloc);
+	}
 }
 
 static void ring_buffer_reset(struct sof_audio_buffer *audio_buffer)