diff --git a/src/platforms/px4_micro_hal.h b/src/platforms/px4_micro_hal.h
index 3ac265e758..d4a92a7826 100644
--- a/src/platforms/px4_micro_hal.h
+++ b/src/platforms/px4_micro_hal.h
@@ -47,6 +47,14 @@ __BEGIN_DECLS
  * schemes or 0,1,2 for zero based schemes.
  */
 
+/*  PX4_SOC_ARCH_ID is monotonic ordinal number assigned by PX4 to a chip
+ *  architecture. The 2 bytes are used to create a globally unique ID when
+ *  prepended to a padded Soc ID.
+ */
+
+#define PX4_SOC_ARCH_ID_BASE             0x0001
+#define PX4_MK_SOC_ARCH_ID(a)            ((a)+PX4_SOC_ARCH_ID_BASE)
+
 #define PX4_BUS_NUMBER_TO_PX4(x)        ((x)+PX4_BUS_OFFSET)  /* Use to define Zero based to match Nuttx Driver but provide 1 based to PX4 */
 #define PX4_BUS_NUMBER_FROM_PX4(x)      ((x)-PX4_BUS_OFFSET)  /* Use to map PX4 1 based to NuttX driver 0 based */
 
@@ -57,6 +65,7 @@ __BEGIN_DECLS
 
 #    if defined(CONFIG_ARCH_CHIP_STM32)
 #      include <stm32.h>
+#      define PX4_SOC_ARCH_ID             PX4_MK_SOC_ARCH_ID(0)
 #      define PX4_FLASH_BASE  STM32_FLASH_BASE
 #      if defined(CONFIG_STM32_STM32F4XXX)
 #        include <stm32_bbsram.h>
@@ -67,6 +76,7 @@ __BEGIN_DECLS
 #    endif
 
 #    if defined(CONFIG_ARCH_CHIP_STM32F7)
+#      define PX4_SOC_ARCH_ID             PX4_MK_SOC_ARCH_ID(1)
 #      include <chip.h>
 #      include <up_internal.h> //include up_systemreset() which is included on stm32.h
 #      include <stm32_bbsram.h>
@@ -144,6 +154,7 @@ __BEGIN_DECLS
 #endif // defined(CONFIG_ARCH_CHIP_STM32) || defined(CONFIG_ARCH_CHIP_STM32F7)
 
 #if defined(CONFIG_ARCH_CHIP_KINETIS)
+#    define PX4_SOC_ARCH_ID             PX4_MK_SOC_ARCH_ID(2)
 
 #    // Fixme: using ??
 #    define PX4_BBSRAM_SIZE          2048
@@ -217,6 +228,8 @@ __BEGIN_DECLS
 #    include <sam_spi.h>
 #    include <sam_twihs.h>
 
+#    define PX4_SOC_ARCH_ID             PX4_MK_SOC_ARCH_ID(3)
+
 #    // Fixme: using ??
 #    define PX4_BBSRAM_SIZE          2048
 #    define PX4_BBSRAM_GETDESC_IOCTL 0