diff --git a/src/arch/host/include/arch/atomic.h b/src/arch/host/include/arch/atomic.h
new file mode 100644
index 000000000..d9e9fad8b
--- /dev/null
+++ b/src/arch/host/include/arch/atomic.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2018, Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of the Intel Corporation nor the
+ *     names of its contributors may be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
+ *	   Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+ *
+ */
+
+#ifndef __ARCH_ATOMIC_H_
+#define __ARCH_ATOMIC_H_
+
+#include <stdint.h>
+#include <errno.h>
+
+typedef struct {
+	volatile int32_t value;
+} atomic_t;
+
+static inline int32_t arch_atomic_read(const atomic_t *a)
+{
+	return (*(volatile int32_t *)&a->value);
+}
+
+static inline void arch_atomic_set(atomic_t *a, int32_t value)
+{
+	a->value = value;
+}
+
+static inline void arch_atomic_init(atomic_t *a, int32_t value)
+{
+	arch_atomic_set(a, value);
+}
+
+/* use gcc atomic built-ins for host library */
+static inline void arch_atomic_add(atomic_t *a, int32_t value)
+{
+	__sync_fetch_and_add(&a->value, value);
+}
+
+static inline void arch_atomic_sub(atomic_t *a, int32_t value)
+{
+	__sync_fetch_and_sub(&a->value, value);
+}
+
+#endif
diff --git a/src/library/include/platform/platform.h b/src/library/include/platform/platform.h
index afd64d890..780179479 100644
--- a/src/library/include/platform/platform.h
+++ b/src/library/include/platform/platform.h
@@ -50,6 +50,11 @@
 /* IPC page data copy timeout */
 #define PLATFORM_IPC_DMA_TIMEOUT 2000
 
+/* DSP default delay in cycles */
+#define PLATFORM_DEFAULT_DELAY	12
+
 static inline void platform_panic(uint32_t p) {}
 
+extern struct timer *platform_timer;
+
 #endif
diff --git a/src/library/include/platform/timer.h b/src/library/include/platform/timer.h
index 9c6a513eb..ca3cba21b 100644
--- a/src/library/include/platform/timer.h
+++ b/src/library/include/platform/timer.h
@@ -39,6 +39,14 @@
 struct comp_dev;
 struct sof_ipc_stream_posn;
 
+int platform_timer_set(struct timer *timer, uint64_t ticks);
+void platform_timer_clear(struct timer *timer);
+uint64_t platform_timer_get(struct timer *timer);
+void platform_timer_start(struct timer *timer);
+void platform_timer_stop(struct timer *timer);
+int platform_timer_register(struct timer *timer,
+			    void (*handler)(void *arg), void *arg);
+
 /* get timestamp for host stream DMA position */
 static inline void platform_host_timestamp(struct comp_dev *host,
 	struct sof_ipc_stream_posn *posn) {}