samples/audio: Add Sound Open Firmware

Adds the Sound Open Firmware project, built as a Zephyr application,
under samples/subsys/sudio/sof.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>

samples/audio/sof/CMakeLists.txt

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.13.1)
+
+find_package(Zephyr HINTS $ENV{ZEPHYR_BASE})
+project(sample_sof)
+
+target_sources(app PRIVATE
+    src/main.c
+  )
+
+zephyr_interface_library_named(sof_lib)
+
+zephyr_library_include_directories(app PUBLIC
+    ${sof_module}/src/arch/xtensa/include
+    ${sof_module}/src/include
+  )

samples/audio/sof/boards/intel_adsp_cavs15.conf

@@ -0,0 +1,8 @@
+CONFIG_APOLLOLAKE=y
+CONFIG_INTEL_DMIC=y
+CONFIG_INTEL_SSP=y
+CONFIG_CORE_COUNT=1
+CONFIG_LP_MEMORY_BANKS=2
+CONFIG_HP_MEMORY_BANKS=8
+CONFIG_PERFORMANCE_COUNTERS=y
+CONFIG_COMP_SRC_SMALL=y

samples/audio/sof/boards/intel_adsp_cavs18.conf

@@ -0,0 +1,7 @@
+CONFIG_CANNONLAKE=y
+CONFIG_INTEL_DMIC=y
+CONFIG_INTEL_SSP=y
+CONFIG_INTEL_ALH=y
+CONFIG_LP_MEMORY_BANKS=1
+CONFIG_HP_MEMORY_BANKS=47
+CONFIG_PERFORMANCE_COUNTERS=y

samples/audio/sof/boards/intel_adsp_cavs20.conf

@@ -0,0 +1,6 @@
+CONFIG_ICELAKE=y
+CONFIG_INTEL_DMIC=y
+CONFIG_INTEL_SSP=y
+CONFIG_INTEL_ALH=y
+CONFIG_LP_MEMORY_BANKS=1
+CONFIG_HP_MEMORY_BANKS=47

samples/audio/sof/boards/intel_adsp_cavs25.conf

@@ -0,0 +1,6 @@
+CONFIG_TIGERLAKE=y
+CONFIG_INTEL_DMIC=y
+CONFIG_INTEL_SSP=y
+CONFIG_INTEL_ALH=y
+CONFIG_LP_MEMORY_BANKS=1
+CONFIG_HP_MEMORY_BANKS=46

samples/audio/sof/prj.conf

@@ -0,0 +1,7 @@
+CONFIG_SOF=y
+CONFIG_SMP=n
+CONFIG_LOG=y
+CONFIG_MP_NUM_CPUS=1
+
+# Requires heap_info() be implemented, but no Zephyr wrapper
+CONFIG_DEBUG_MEMORY_USAGE_SCAN=n

samples/audio/sof/sample.yaml

@@ -0,0 +1,11 @@
+sample:
+  description: Audio with SOF
+  name: sof
+common:
+    tags: audio
+tests:
+  sample.audio.sof:
+    tags: sof
+    build_only: true
+    integration_platforms:
+      - intel_adsp_cavs15

samples/audio/sof/src/main.c

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2020 Intel Corporation.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr.h>
+
+#include <logging/log.h>
+LOG_MODULE_REGISTER(main, LOG_LEVEL_DBG);
+
+/**
+ * Should be included from sof/schedule/task.h
+ * but triggers include chain issue
+ * FIXME
+ */
+int sof_main(int argc, char *argv[]);
+
+/**
+ * TODO: Here comes SOF initialization
+ */
+
+void main(void)
+{
+	int ret;
+
+	LOG_INF("SOF on %s", CONFIG_BOARD);
+
+	/* sof_main is actually SOF initialization */
+	ret = sof_main(0, NULL);
+	if (ret) {
+		LOG_ERR("SOF initialization failed");
+	}
+
+	LOG_INF("SOF initialized");
+}