diff --git a/src/drivers/dw/ssi-spi.c b/src/drivers/dw/ssi-spi.c
index a7d2c7509f7d..dd2204ccacd6 100644
--- a/src/drivers/dw/ssi-spi.c
+++ b/src/drivers/dw/ssi-spi.c
@@ -120,6 +120,7 @@ struct spi_dma_config {
 	enum spi_xfer_direction dir;
 	void *src_buf;
 	void *dest_buf;
+	uint32_t buffer_size;
 	uint32_t transfer_len;
 };
 
@@ -133,6 +134,7 @@ struct spi {
 	const struct gpio *gpio;
 	uint32_t index;
 	uint32_t chan[2];	/* spi-slave rx/tx dma */
+	uint32_t buffer_size;
 	uint8_t *rx_buffer;
 	uint8_t *tx_buffer;
 	struct dma *dma[2];
@@ -379,7 +381,8 @@ int spi_push(struct spi *spi, const void *data, size_t size)
 	spi->ipc_status = IPC_WRITE;
 
 	/* Actually we have to send IPC messages in one go */
-	rmemcpy(config->src_buf, data, size);
+	assert(!memcpy_s(config->src_buf, config->buffer_size, data, size));
+
 	dcache_writeback_region(config->src_buf, size);
 
 	ret = spi_trigger(spi, SPI_TRIGGER_START, SPI_DIR_TX);
@@ -427,6 +430,7 @@ static int spi_slave_init(struct spi *spi)
 	config = spi->config + SPI_DIR_TX;
 	config->dir = SPI_DIR_TX;
 	config->src_buf = spi->tx_buffer;
+	config->buffer_size = spi->buffer_size;
 
 	spi->completion.private = NULL;
 	return schedule_task_init(&spi->completion, SOF_SCHEDULE_EDF,
@@ -475,6 +479,7 @@ int spi_probe(struct spi *spi)
 
 	spi->tx_buffer = rzalloc(RZONE_SYS_RUNTIME, SOF_MEM_CAPS_DMA,
 				 SPI_BUFFER_SIZE);
+	spi->buffer_size = SPI_BUFFER_SIZE;
 	if (spi->tx_buffer == NULL) {
 		rfree(spi->rx_buffer);
 		trace_ipc_error("eSp");
diff --git a/src/drivers/intel/baytrail/ipc.c b/src/drivers/intel/baytrail/ipc.c
index c69fffd03717..1802a73fbadc 100644
--- a/src/drivers/intel/baytrail/ipc.c
+++ b/src/drivers/intel/baytrail/ipc.c
@@ -67,7 +67,8 @@ static void do_notify(void)
 
 	/* copy the data returned from DSP */
 	if (msg->rx_size && msg->rx_size < SOF_IPC_MSG_MAX_SIZE)
-		mailbox_dspbox_read(msg->rx_data, 0, msg->rx_size);
+		mailbox_dspbox_read(msg->rx_data, SOF_IPC_MSG_MAX_SIZE,
+				    0, msg->rx_size);
 
 	/* any callback ? */
 	if (msg->cb)
diff --git a/src/drivers/intel/cavs/dmic.c b/src/drivers/intel/cavs/dmic.c
index f153729097ab..cb42eaedd4d1 100644
--- a/src/drivers/intel/cavs/dmic.c
+++ b/src/drivers/intel/cavs/dmic.c
@@ -1164,8 +1164,8 @@ static int dmic_set_config(struct dai *dai, struct sof_ipc_dai_config *config)
 	/* Copy the new DMIC params to persistent.  The last request
 	 * determines the parameters.
 	 */
-	memcpy(dmic_prm[di], &config->dmic,
-	       sizeof(struct sof_ipc_dai_dmic_params));
+	assert(!memcpy_s(dmic_prm[di], sizeof(*dmic_prm[di]), &config->dmic,
+	       sizeof(struct sof_ipc_dai_dmic_params)));
 
 	if (config->dmic.num_pdm_active > DMIC_HW_CONTROLLERS) {
 		trace_dmic_error("dmic_set_config() error: the requested "
@@ -1179,11 +1179,14 @@ static int dmic_set_config(struct dai *dai, struct sof_ipc_dai_config *config)
 		dmic_prm[di]->pdm[i].id = i;
 		for (j = 0; j < config->dmic.num_pdm_active; j++) {
 			/* copy the pdm controller params id the id's match */
-			if (dmic_prm[di]->pdm[i].id == config->dmic.pdm[j].id)
-				memcpy(&dmic_prm[di]->pdm[i],
+			if (dmic_prm[di]->pdm[i].id == config->dmic.pdm[j].id) {
+				assert(!memcpy_s(&dmic_prm[di]->pdm[i],
+				       sizeof(
+				       dmic_prm[di]->pdm[i]),
 				       &config->dmic.pdm[j],
 				       sizeof(
-				       struct sof_ipc_dai_dmic_pdm_ctrl));
+				       struct sof_ipc_dai_dmic_pdm_ctrl)));
+			}
 		}
 	}
 
diff --git a/src/drivers/intel/cavs/sue-ipc.c b/src/drivers/intel/cavs/sue-ipc.c
index c2555b894749..68d2a649656e 100644
--- a/src/drivers/intel/cavs/sue-ipc.c
+++ b/src/drivers/intel/cavs/sue-ipc.c
@@ -64,7 +64,8 @@ void ipc_platform_do_cmd(struct ipc *ipc)
 	/* perform command and return any error */
 	err = ipc_cmd();
 	if (err > 0) {
-		mailbox_hostbox_read(&reply, 0, sizeof(reply));
+		mailbox_hostbox_read(&reply, SOF_IPC_MSG_MAX_SIZE,
+				     0, sizeof(reply));
 		goto done; /* reply created and copied by cmd() */
 	} else if (err < 0) {
 		/* send std error reply */
diff --git a/src/drivers/intel/haswell/ipc.c b/src/drivers/intel/haswell/ipc.c
index 253bc8aec585..4905485164ec 100644
--- a/src/drivers/intel/haswell/ipc.c
+++ b/src/drivers/intel/haswell/ipc.c
@@ -67,7 +67,8 @@ static void do_notify(void)
 
 	/* copy the data returned from DSP */
 	if (msg->rx_size && msg->rx_size < SOF_IPC_MSG_MAX_SIZE)
-		mailbox_dspbox_read(msg->rx_data, 0, msg->rx_size);
+		mailbox_dspbox_read(msg->rx_data, SOF_IPC_MSG_MAX_SIZE,
+				    0, msg->rx_size);
 
 	/* any callback ? */
 	if (msg->cb)
diff --git a/src/include/sof/debug.h b/src/include/sof/debug.h
index 075f834e8809..089d74238223 100644
--- a/src/include/sof/debug.h
+++ b/src/include/sof/debug.h
@@ -183,8 +183,9 @@ static inline uint32_t dump_stack(uint32_t p, void *addr, size_t offset,
 		size = limit;
 
 	/* copy stack contents and writeback */
-	rmemcpy(addr, (void*)stack_top, size - sizeof(void *));
+	assert(!memcpy_s(addr, limit, (void *)stack_top, size - sizeof(void *)));
 	dcache_writeback_region(addr, size - sizeof(void *));
+
 	return p;
 }
 
diff --git a/src/include/sof/mailbox.h b/src/include/sof/mailbox.h
index 17d9daa8c6dc..af8af01fa97d 100644
--- a/src/include/sof/mailbox.h
+++ b/src/include/sof/mailbox.h
@@ -36,6 +36,7 @@
 #include <arch/cache.h>
 #include <stdint.h>
 #include <sof/string.h>
+#include <sof/panic.h>
 
 /* For those platform did not have SW_REG window, use DEBUG at now */
 #ifndef MAILBOX_SW_REG_BASE
@@ -72,36 +73,47 @@
 static inline
 void mailbox_dspbox_write(size_t offset, const void *src, size_t bytes)
 {
-	rmemcpy((void *)(MAILBOX_DSPBOX_BASE + offset), src, bytes);
+	assert(!memcpy_s((void *)(MAILBOX_DSPBOX_BASE + offset),
+		 MAILBOX_DSPBOX_SIZE - offset - MAILBOX_DSPBOX_BASE,
+		 src, bytes));
 	dcache_writeback_region((void *)(MAILBOX_DSPBOX_BASE + offset), bytes);
 }
 
 static inline
-void mailbox_dspbox_read(void *dest, size_t offset, size_t bytes)
+void mailbox_dspbox_read(void *dest, size_t dest_size,
+			 size_t offset, size_t bytes)
 {
-	dcache_invalidate_region((void *)(MAILBOX_DSPBOX_BASE + offset), bytes);
-	rmemcpy(dest, (void *)(MAILBOX_DSPBOX_BASE + offset), bytes);
+	dcache_invalidate_region((void *)(MAILBOX_DSPBOX_BASE + offset),
+				 bytes);
+	assert(!memcpy_s(dest, dest_size, (void *)(MAILBOX_DSPBOX_BASE + offset),
+		 bytes));
 }
 
 static inline
 void mailbox_hostbox_write(size_t offset, const void *src, size_t bytes)
 {
-	rmemcpy((void *)(MAILBOX_HOSTBOX_BASE + offset), src, bytes);
+	assert(!memcpy_s((void *)(MAILBOX_HOSTBOX_BASE + offset),
+		MAILBOX_HOSTBOX_SIZE - offset - MAILBOX_HOSTBOX_BASE,
+		src, bytes));
 	dcache_writeback_region((void *)(MAILBOX_HOSTBOX_BASE + offset), bytes);
 }
 
 static inline
-void mailbox_hostbox_read(void *dest, size_t offset, size_t bytes)
+void mailbox_hostbox_read(void *dest, size_t dest_size,
+			  size_t offset, size_t bytes)
 {
 	dcache_invalidate_region((void *)(MAILBOX_HOSTBOX_BASE + offset),
 				 bytes);
-	rmemcpy(dest, (void *)(MAILBOX_HOSTBOX_BASE + offset), bytes);
+	assert(!memcpy_s(dest, dest_size, (void *)(MAILBOX_HOSTBOX_BASE + offset),
+		 bytes));
 }
 
 static inline
 void mailbox_stream_write(size_t offset, const void *src, size_t bytes)
 {
-	rmemcpy((void *)(MAILBOX_STREAM_BASE + offset), src, bytes);
+	assert(!memcpy_s((void *)(MAILBOX_STREAM_BASE + offset),
+		MAILBOX_STREAM_SIZE - offset - MAILBOX_STREAM_BASE,
+		src, bytes));
 	dcache_writeback_region((void *)(MAILBOX_STREAM_BASE + offset),
 				bytes);
 }
diff --git a/src/include/sof/panic.h b/src/include/sof/panic.h
index e56738e9d14e..e95dd52e8b28 100644
--- a/src/include/sof/panic.h
+++ b/src/include/sof/panic.h
@@ -32,6 +32,7 @@
 #define __INCLUDE_SOF_IPC_PANIC__
 
 #include <stdint.h>
+#include <uapi/ipc/trace.h>
 
 struct sof_ipc_panic_info;
 
@@ -43,4 +44,7 @@ void __panic(uint32_t p, char *filename, uint32_t linenum);
 /* panic dump filename and linenumber of the call */
 #define panic(x) __panic((x), (__FILE__), (__LINE__))
 
+/* runtime assertion */
+#define assert(cond) (void)((cond) || (panic(SOF_IPC_PANIC_ASSERT), 0))
+
 #endif
diff --git a/src/include/sof/sof.h b/src/include/sof/sof.h
index 7cff13251419..4b7dbc8208b7 100644
--- a/src/include/sof/sof.h
+++ b/src/include/sof/sof.h
@@ -57,9 +57,6 @@ struct sa;
 	__attribute__((unused))		\
 	typedef char META_CONCAT(assertion_failed_, MESSAGE)[(COND) ? 1 : -1]
 
-/* runtime assertion */
-#define assert(cond) (void)((cond) || (panic(SOF_IPC_PANIC_ASSERT), 0))
-
 /* general firmware context */
 struct sof {
 	/* init data */
diff --git a/src/ipc/handler.c b/src/ipc/handler.c
index 8c7fe2b909e8..04bea47003c6 100644
--- a/src/ipc/handler.c
+++ b/src/ipc/handler.c
@@ -105,16 +105,17 @@
 #define _IPC_COPY_CMD(rx, tx, rx_size)					\
 	do {								\
 		if (rx_size > tx->size) {				\
-			memcpy(rx, tx, tx->size);			\
+			assert(!memcpy_s(rx, rx_size, tx, tx->size));	\
 			bzero((void *)rx + tx->size, rx_size - tx->size);\
 			trace_ipc("ipc: hdr 0x%x rx (%d) > tx (%d)",	\
 				  rx->cmd, rx_size, tx->size);		\
 		} else if (tx->size > rx_size) {			\
-			memcpy(rx, tx, rx_size);			\
+			assert(!memcpy_s(rx, rx_size, tx, rx_size));	\
 			trace_ipc("ipc: hdr 0x%x tx (%d) > rx (%d)",	\
 				  rx->cmd, tx->size, rx_size);		\
 		} else							\
-			memcpy(rx, tx, rx_size);			\
+			assert(!memcpy_s(rx, rx_size, tx, rx_size));	\
+									\
 	} while (0)
 
 /* copies whole message from Tx to Rx, follows above ABI rules */
@@ -131,7 +132,7 @@ static inline struct sof_ipc_cmd_hdr *mailbox_validate(void)
 	struct sof_ipc_cmd_hdr *hdr = _ipc->comp_data;
 
 	/* read component values from the inbox */
-	mailbox_hostbox_read(hdr, 0, sizeof(*hdr));
+	mailbox_hostbox_read(hdr, SOF_IPC_MSG_MAX_SIZE, 0, sizeof(*hdr));
 
 	/* validate component header */
 	if (hdr->size > SOF_IPC_MSG_MAX_SIZE) {
@@ -140,7 +141,8 @@ static inline struct sof_ipc_cmd_hdr *mailbox_validate(void)
 	}
 
 	/* read rest of component data */
-	mailbox_hostbox_read(hdr + 1, sizeof(*hdr), hdr->size - sizeof(*hdr));
+	mailbox_hostbox_read(hdr + 1, SOF_IPC_MSG_MAX_SIZE,
+			     sizeof(*hdr), hdr->size - sizeof(*hdr));
 
 	dcache_writeback_region(hdr, hdr->size);
 
@@ -1247,7 +1249,7 @@ int ipc_queue_host_message(struct ipc *ipc, uint32_t header, void *tx_data,
 
 	/* copy mailbox data to message */
 	if (tx_bytes > 0 && tx_bytes < SOF_IPC_MSG_MAX_SIZE)
-		rmemcpy(msg->tx_data, tx_data, tx_bytes);
+		assert(!memcpy_s(msg->tx_data, msg->tx_size, tx_data, tx_bytes));
 
 	if (!found) {
 		/* now queue the message */
diff --git a/src/lib/panic.c b/src/lib/panic.c
index 84f3b2a3e0b8..2526d4bc7935 100644
--- a/src/lib/panic.c
+++ b/src/lib/panic.c
@@ -46,7 +46,7 @@ void dump_panicinfo(void *addr, struct sof_ipc_panic_info *panic_info)
 {
 	if (!panic_info)
 		return;
-	rmemcpy(addr, panic_info, sizeof(struct sof_ipc_panic_info));
+	memcpy(addr, panic_info, sizeof(struct sof_ipc_panic_info));
 	dcache_writeback_region(addr, sizeof(struct sof_ipc_panic_info));
 }
 
@@ -95,18 +95,21 @@ void panic_rewind(uint32_t p, uint32_t stack_rewind_frames,
 
 void __panic(uint32_t p, char *filename, uint32_t linenum)
 {
-	struct sof_ipc_panic_info panicinfo;
+	struct sof_ipc_panic_info panicinfo = { .linenum = linenum };
 	int strlen;
 
 	strlen = rstrlen(filename);
+
 	if (strlen >= SOF_TRACE_FILENAME_SIZE) {
-		rmemcpy(panicinfo.filename, filename + strlen -
-			SOF_TRACE_FILENAME_SIZE, SOF_TRACE_FILENAME_SIZE);
-		rmemcpy(panicinfo.filename, "...", 3);
+		memcpy_s(panicinfo.filename, sizeof(panicinfo.filename),
+			 filename + strlen - SOF_TRACE_FILENAME_SIZE,
+			 SOF_TRACE_FILENAME_SIZE);
+		memcpy_s(panicinfo.filename, sizeof(panicinfo.filename),
+			 "...", 3);
 	} else {
-		rmemcpy(panicinfo.filename, filename, strlen + 1);
+		memcpy_s(panicinfo.filename, sizeof(panicinfo.filename),
+			 filename, strlen + 1);
 	}
-	panicinfo.linenum = linenum;
 
 	panic_rewind(p, 0, &panicinfo);
 }
diff --git a/src/library/include/platform/memory.h b/src/library/include/platform/memory.h
index 3305645dfcb3..bb91f760bfde 100644
--- a/src/library/include/platform/memory.h
+++ b/src/library/include/platform/memory.h
@@ -41,7 +41,10 @@
 #define SOF_STACK_SIZE		0x1000
 
 #define MAILBOX_DSPBOX_BASE	0
+#define MAILBOX_DSPBOX_SIZE	0x400
 #define MAILBOX_HOSTBOX_BASE	0
+#define MAILBOX_HOSTBOX_SIZE	0x400
 #define MAILBOX_BASE		0
+#define MAILBOX_BASE_SIZE	0x400
 
 #endif