diff --git common/compatibility.h common/compatibility.h
index e202b42..7c42fa7 100644
--- common/compatibility.h
+++ common/compatibility.h
@@ -61,6 +61,10 @@
 #       define ARCH_ppc
 #   elif defined(__aarch64__)
 #       define ARCH_arm64
+#   elif defined(__s390x__)
+#       define ARCH_s390x
+#   elif defined(__s390__)
+#       define ARCH_s390
 #   else
 #       error Unknown CPU architecture using the linux OS
 #   endif
@@ -92,7 +96,7 @@
 #define U16H_FMT    "0x%04x"
 #define U8H_FMT     "0x%02x"
 
-#if defined(ARCH_x86) || defined(ARCH_ppc) || defined(UEFI_BUILD)
+#if defined(ARCH_x86) || defined(ARCH_ppc) || defined(UEFI_BUILD) || defined(ARCH_s390)
 #   if defined(__MINGW32__) || defined(__MINGW64__)
 #       include <inttypes.h>
 #       define U64D_FMT    "0x%" PRId64
@@ -107,7 +111,7 @@
 #       define U48H_FMT     "0x%012llx"
 #       define U64D_FMT_GEN "llu"
 #   endif
-#elif defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(ARCH_arm64)
+#elif defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(ARCH_arm64) || defined(ARCH_s390x)
 #    define U64D_FMT     "%lu"
 #    define U64H_FMT     "0x%016lx"
 #    define U48H_FMT     "0x%012lx"
diff --git mtcr_ul/packets_common.h mtcr_ul/packets_common.h
index dd02b71..0963ba7 100644
--- mtcr_ul/packets_common.h
+++ mtcr_ul/packets_common.h
@@ -150,6 +150,10 @@
 #       define ARCH_ppc
 #   elif defined(__aarch64__)
 #       define ARCH_arm64
+#   elif defined(__s390x__)
+#       define ARCH_s390x
+#   elif defined(__s390__)
+#       define ARCH_s390
 #   else
 #       error Unknown CPU architecture using the linux OS
 #   endif
@@ -163,9 +167,9 @@
 
 /**********************************/
 /* define macros for print fields */
-//#if defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(__MINGW64__)
+//#if defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(__MINGW64__) || defined(ARCH_s390x)
 /*
-#if !defined(UEFI_BUILD) && (defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(__MINGW64__))
+#if !defined(UEFI_BUILD) && (defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(__MINGW64__)) || defined(ARCH_s390x)
 #   define U64H_FMT "0x%016lx"
 #   define U64D_FMT "%lu"
 #   define U32H_FMT "0x%08x"
@@ -173,7 +177,7 @@
 #   define U8H_FMT  "0x%02x"
 #   define U32D_FMT "%u"
 #   define STR_FMT "%s"
-#elif defined(ARCH_x86) || defined(ARCH_ppc) || defined(__MINGW32__) || defined(UEFI_BUILD)
+#elif defined(ARCH_x86) || defined(ARCH_ppc) || defined(__MINGW32__) || defined(UEFI_BUILD) || defined(ARCH_s390)
 #   define U64H_FMT "0x%016llx"
 #   define U64D_FMT "%llu"
 #   define U32H_FMT "0x%08x"
diff --git tools_layouts/adb_to_c_utils.h tools_layouts/adb_to_c_utils.h
index 6268b69..26adb09 100644
--- tools_layouts/adb_to_c_utils.h
+++ tools_layouts/adb_to_c_utils.h
@@ -137,6 +137,10 @@ extern "C" {
 #       define ARCH_ppc
 #   elif defined(__aarch64__)
 #       define ARCH_arm64
+#   elif defined(__s390x__)
+#       define ARCH_s390x
+#   elif defined(__s390__)
+#       define ARCH_s390
 #   else
 #       error Unknown CPU architecture using the linux OS
 #   endif
@@ -169,7 +173,11 @@ extern "C" {
 #define U16H_FMT    "0x%04x"
 #define U8H_FMT     "0x%02x"
 
-#if defined(ARCH_x86) || defined(ARCH_ppc) || defined(UEFI_BUILD)
+#if defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(ARCH_arm64) || defined(ARCH_s390x)
+#    define U64D_FMT    "%lu"
+#    define U64H_FMT    "0x%016lx"
+#	 define U48H_FMT	"0x%012lx" 
+#elif defined(ARCH_x86) || defined(ARCH_ppc) || defined(UEFI_BUILD) || defined(ARCH_s390)
 #   if defined(__MINGW32__) || defined(__MINGW64__)
 #       include <inttypes.h>
 #       define U64D_FMT    "0x%" PRId64
@@ -180,10 +188,6 @@ extern "C" {
 #       define U64H_FMT    "0x%016llx"
 #       define U48H_FMT    "0x%012llx"
 #   endif
-#elif defined (ARCH_ia64) || defined(ARCH_x86_64) || defined(ARCH_ppc64) || defined(ARCH_arm64)
-#    define U64D_FMT    "%lu"
-#    define U64H_FMT    "0x%016lx"
-#	 define U48H_FMT	"0x%012lx" 
 #else
 #   error Unknown architecture
 #endif  /* ARCH */