diff --git a/smartbond/da1469x_hal/CMakeLists.txt b/smartbond/da1469x_hal/CMakeLists.txt
index eca2caa..5daf50e 100644
--- a/smartbond/da1469x_hal/CMakeLists.txt
+++ b/smartbond/da1469x_hal/CMakeLists.txt
@@ -6,4 +6,5 @@ zephyr_library_sources(
   da1469x_pd.c
   da1469x_pdc.c
   da1469x_trimv.c
+  system_da1469x.c
 )
diff --git a/smartbond/da1469x_hal/system_da1469x.c b/smartbond/da1469x_hal/system_da1469x.c
new file mode 100644
index 0000000..5e122a9
--- /dev/null
+++ b/smartbond/da1469x_hal/system_da1469x.c
@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <string.h>
+#include <assert.h>
+#include <DA1469xAB.h>
+#include <da1469x_config.h>
+#include <zephyr/sys/util.h>
+#include <system_DA1469x.h>
+
+enum REMAP_ADDR0 {
+	REMAP_ADDR0_ROM = 0x0,
+	REMAP_ADDR0_OTP,
+	REMAP_ADDR0_QSPIF_CACHED,
+	REMAP_ADDR0_SYSRAM,
+	REMAP_ADDR0_MAX,
+};
+
+uint32_t black_orca_phy_addr(uint32_t addr)
+{
+	uint32_t remap_addr0;
+	uint32_t phy_addr;
+
+	static const uint32_t remap_bases[] = {
+		[REMAP_ADDR0_ROM] = MCU_ROM_BASE,
+		[REMAP_ADDR0_OTP] = MCU_OTP_M_BASE,
+		[REMAP_ADDR0_QSPIF_CACHED] = MCU_QSPIF_M_CACHED_BASE,
+		[REMAP_ADDR0_SYSRAM] = MCU_SYSRAM_M_BASE
+	};
+
+	static const uint32_t flash_region_sizes[] = {
+		MB(32),
+		MB(16),
+		MB(8),
+		MB(4),
+		MB(2),
+		MB(1),
+		KB(512),
+		KB(256)
+	};
+
+	remap_addr0 = CRG_TOP->SYS_CTRL_REG & CRG_TOP_SYS_CTRL_REG_REMAP_ADR0_Msk;
+	assert(remap_addr0 < REMAP_ADDR0_MAX);
+
+	if (remap_addr0 != REMAP_ADDR0_QSPIF_CACHED) {
+		if (IS_REMAPPED_ADDRESS(addr)) {
+			phy_addr = addr + remap_bases[remap_addr0];
+		} else {
+			phy_addr = addr;
+		}
+	} else {
+		/* FLASH_REGION_BASE corresponds to Flash region base address bits [31:16] */
+		uint32_t flash_region_base = ((CACHE->CACHE_FLASH_REG & CACHE_CACHE_FLASH_REG_FLASH_REGION_BASE_Msk) >>
+																CACHE_CACHE_FLASH_REG_FLASH_REGION_BASE_Pos) << 16;
+		/* FLASH_REGION_OFFSET corresponds to Flash region base address bits [13:2]. Offset is expressed in words. */
+		flash_region_base += ((CACHE->CACHE_FLASH_REG & CACHE_CACHE_FLASH_REG_FLASH_REGION_OFFSET_Msk) >>
+														CACHE_CACHE_FLASH_REG_FLASH_REGION_OFFSET_Pos) << 2;
+		__unused uint32_t flash_region_size = flash_region_sizes[CACHE->CACHE_FLASH_REG & CACHE_CACHE_FLASH_REG_FLASH_REGION_SIZE_Msk];
+
+		if (IS_REMAPPED_ADDRESS(addr)) {
+			assert(addr < flash_region_size);
+
+			phy_addr = addr + flash_region_base;
+		} else if (IS_QSPIF_CACHED_ADDRESS(addr)) {
+			assert(addr >= flash_region_base && addr < (flash_region_base + flash_region_size));
+
+			phy_addr = addr;
+		} else {
+			phy_addr = addr;
+		}
+	}
+
+	return phy_addr;
+}
\ No newline at end of file
diff --git a/smartbond/sdk/bsp/include/system_DA1469x.h b/smartbond/sdk/bsp/include/system_DA1469x.h
index 6c53ee9..c48e9af 100644
--- a/smartbond/sdk/bsp/include/system_DA1469x.h
+++ b/smartbond/sdk/bsp/include/system_DA1469x.h
@@ -62,7 +62,7 @@ extern void SystemCoreClockUpdate (void);
  * \return physical address (for DMA, AES/HASH etc.) -- can be same or different as addr
  *
  */
-extern uint32_t black_orca_phy_addr(uint32_t addr);
+uint32_t black_orca_phy_addr(uint32_t addr);
 
 
 #ifdef __cplusplus