diff --git a/BUILD.gn b/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..79c156f163c6637dadd34f2f3944bd661e2d9440
--- /dev/null
+++ b/BUILD.gn
@@ -0,0 +1,100 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+import("//build/config/sysroot.gni")
+import("//build/ohos.gni")
+
+config("mtd_utils_config") {
+  visibility = [ ":*" ]
+
+  include_dirs = [
+    ".",
+    "include",
+    "lib",
+
+    # "//third_party/mtd-utils",
+    # "//third_party/mtd-utils/include",
+    # "//third_party/mtd-utils/lib",
+  ]
+
+  deps = []
+  if (use_musl) {
+    deps += [
+      "//third_party/musl:musl_headers",
+      "//third_party/musl:musl_libs",
+    ]
+    include_dirs += [ "//third_party/musl/include" ]
+  }
+
+  cflags = [
+    "-Wall",
+    "-Wextra",
+    "-Wunused",
+    "-Wmissing-prototypes",
+    "-Wmissing-declarations",
+    "-Wwrite-strings",
+    "-Wuninitialized",
+    "-Winit-self",
+    "-Wunused-parameter",
+    "-Wunused-result",
+    "-Wunused-variable",
+    "-Wnull-dereference",
+    "-Wno-shadow",
+    "-Wno-sign-compare",
+    "-std=gnu99",
+  ]
+  if (target_cpu == "riscv64") {
+    cflags += [
+      "-DTARGET=RISCV64",
+      "-march=rv64g",
+    ]
+  }
+
+  # cflags_cc = [
+  #     "-std=c++11"
+  # ]
+
+  ldflags = []
+
+  # defined at ares_config.h generated by cmake
+  # TODO: need check on other cpu_arch
+  defines = [
+    "HAVE_CONFIG_H=1",
+    "_GNU_SOURCE",
+  ]
+}
+
+ohos_source_set("mtd_utils_misc_headers") {
+  sources = [
+    "misc-utils/lsmtd.h",
+    "misc-utils/mcast_image.h",
+  ]
+}
+
+ohos_source_set("mtd_utils_jffs_headers") {
+  sources = [
+    "jffsX-utils/compr.h",
+    "jffsX-utils/rbtree.h",
+    "jffsX-utils/summary.h",
+  ]
+}
+
+group("mtd_utils") {
+  deps = [
+    # "ubifs-utils:mtd_utils_ubifs",
+    "jffsX-utils:mtd_utils_jffs",
+    "misc-utils:mtd_utils_misc",
+    "nand-utils:mtd_utils_nand",
+    "nor-utils:mtd_utils_nor",
+    "ubi-utils:mtd_utils_ubi",
+  ]
+}
+
+group("mtd_utils_tests") {
+  deps = [
+    "tests/fs-tests:fs_tests",
+    "tests/jittertest:jitter_test",
+    "tests/mtd-tests:mtd_tests",
+    "tests/ubi-tests:ubi_tests",
+
+    # "tests/unittests:unit_tests",
+  ]
+}
diff --git a/jffsX-utils/BUILD.gn b/jffsX-utils/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..8a7748a320e3d7a52570ca5ef09aae7d1ff1ead2
--- /dev/null
+++ b/jffsX-utils/BUILD.gn
@@ -0,0 +1,65 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("mkfs.jffs2") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/zlib:libz",
+
+    # FIXME: missing lzo library!!!!
+  ]
+  include_dirs = [ "." ]
+  sources = [
+    "compr.c",
+    "compr.h",
+    "compr_lzo.c",
+    "compr_rtime.c",
+    "compr_zlib.c",
+    "mkfs.jffs2.c",
+    "rbtree.c",
+    "rbtree.h",
+  ]
+}
+
+ohos_executable("jffs2dump") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/zlib:libz",
+
+    # FIXME: missing lzo library!!!!
+  ]
+  include_dirs = [ "." ]
+  sources = [ "jffs2dump.c" ]
+}
+
+ohos_executable("jffs2reader") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/zlib:libz",
+
+    # FIXME: missing lzo library!!!!
+  ]
+  include_dirs = [ "." ]
+  sources = [ "jffs2reader.c" ]
+}
+
+ohos_executable("sumtool") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "sumtool.c" ]
+}
+
+group("mtd_utils_jffs") {
+  deps = [
+    # FIXME: missing lzo library!!!!
+    # ":mkfs.jffs2",
+    # ":jffs2dump",
+    # ":jffs2reader",
+    ":sumtool",
+  ]
+}
diff --git a/lib/BUILD.gn b/lib/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..b412833faee517ebd74ed418f3c21164a50bb63f
--- /dev/null
+++ b/lib/BUILD.gn
@@ -0,0 +1,42 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_static_library("ubi") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [ "libubi.c" ]
+}
+
+ohos_static_library("missing") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [ "execinfo.c" ]
+}
+
+ohos_static_library("mtd") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [
+    "common.c",
+    "libcrc32.c",
+    "libfec.c",
+    "libmtd.c",
+    "libmtd_legacy.c",
+  ]
+}
+
+ohos_static_library("ubigen") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [ "libubigen.c" ]
+}
+
+ohos_static_library("iniparser") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [
+    "dictionary.c",
+    "libiniparser.c",
+  ]
+}
+
+ohos_static_library("scan") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [ "libscan.c" ]
+}
diff --git a/misc-utils/BUILD.gn b/misc-utils/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..8b50a34b467c50c25ce575af7eacc3a391e7ffd4
--- /dev/null
+++ b/misc-utils/BUILD.gn
@@ -0,0 +1,137 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("ftl_format") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "ftl_format.c" ]
+}
+
+ohos_executable("doc_loadbios") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "doc_loadbios.c" ]
+}
+
+ohos_executable("ftl_check") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "ftl_check.c" ]
+}
+
+ohos_executable("mtd_debug") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "mtd_debug.c" ]
+}
+
+ohos_executable("docfdisk") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "docfdisk.c" ]
+}
+
+ohos_executable("serve_image") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "serve_image.c" ]
+}
+
+ohos_executable("recv_image") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "recv_image.c" ]
+}
+
+ohos_executable("flash_erase") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_erase.c" ]
+}
+
+ohos_executable("flash_lock") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_lock.c" ]
+}
+
+ohos_executable("flash_unlock") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_unlock.c" ]
+}
+
+ohos_executable("flash_otp_info") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_otp_info.c" ]
+}
+
+ohos_executable("flash_otp_dump") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_otp_dump.c" ]
+}
+
+ohos_executable("flash_otp_lock") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_otp_lock.c" ]
+}
+
+ohos_executable("flash_otp_write") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flash_otp_write.c" ]
+}
+
+ohos_executable("flashcp") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "flashcp.c" ]
+}
+
+ohos_executable("mtdpart") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "mtdpart.c" ]
+}
+
+ohos_executable("lsmtd") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  include_dirs = [ "." ]
+  sources = [
+    "lsmtd.c",
+    "lsmtd_scan.c",
+  ]
+}
+
+group("mtd_utils_misc") {
+  deps = [
+    ":doc_loadbios",
+    ":docfdisk",
+    ":flash_erase",
+    ":flash_lock",
+    ":flash_otp_dump",
+    ":flash_otp_info",
+    ":flash_otp_lock",
+    ":flash_otp_write",
+    ":flash_unlock",
+    ":flashcp",
+    ":ftl_check",
+    ":ftl_format",
+    ":lsmtd",
+    ":mtd_debug",
+    ":mtdpart",
+    ":recv_image",
+    ":serve_image",
+  ]
+}
diff --git a/nand-utils/BUILD.gn b/nand-utils/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..cbf9e551e4b89deb076f3fcd0b945a29db6ea0dd
--- /dev/null
+++ b/nand-utils/BUILD.gn
@@ -0,0 +1,48 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("nanddump") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "nanddump.c" ]
+}
+
+ohos_executable("nandwrite") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "nandwrite.c" ]
+}
+
+ohos_executable("nandtest") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "nandtest.c" ]
+}
+
+ohos_executable("nftldump") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "nftldump.c" ]
+}
+
+ohos_executable("nftl_format") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "nftl_format.c" ]
+}
+
+group("mtd_utils_nand") {
+  deps = [
+    ":nanddump",
+    ":nandtest",
+    ":nandwrite",
+    ":nftl_format",
+    ":nftldump",
+  ]
+}
diff --git a/nor-utils/BUILD.gn b/nor-utils/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..b9757eff2d8f845362855e83677e2d0e6dcd9019
--- /dev/null
+++ b/nor-utils/BUILD.gn
@@ -0,0 +1,24 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("rfddump") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "rfddump.c" ]
+}
+
+ohos_executable("rfdformat") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  include_dirs = [ "." ]
+  sources = [ "rfdformat.c" ]
+}
+
+group("mtd_utils_nor") {
+  deps = [
+    ":rfddump",
+    ":rfdformat",
+  ]
+}
diff --git a/tests/fs-tests/BUILD.gn b/tests/fs-tests/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..0f14f2a12a760e0ccb6eacf4a39ea0b15800dd4a
--- /dev/null
+++ b/tests/fs-tests/BUILD.gn
@@ -0,0 +1,170 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_static_library("fs_tests_library") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "lib" ]
+  sources = [ "lib/tests.c" ]
+}
+
+# fs-tests/integrity
+ohos_executable("mtd_utils_tests_integck") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:missing",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  include_dirs = [ "lib" ]
+  sources = [ "integrity/integck.c" ]
+}
+
+# fs-tests/simple
+ohos_executable("mtd_utils_tests_test_1") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "simple/test_1.c" ]
+}
+
+ohos_executable("mtd_utils_tests_test_2") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "simple/test_2.c" ]
+}
+
+ohos_executable("mtd_utils_tests_ftrunc") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "simple/ftrunc.c" ]
+}
+
+ohos_executable("mtd_utils_tests_perf") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "simple/perf.c" ]
+}
+
+ohos_executable("mtd_utils_tests_orph") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "simple/orph.c" ]
+}
+
+# fs-tests/stress
+ohos_executable("mtd_utils_tests_stress_1") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/stress_1.c" ]
+}
+
+ohos_executable("mtd_utils_tests_stress_2") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/stress_2.c" ]
+}
+
+ohos_executable("mtd_utils_tests_stress_3") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/stress_3.c" ]
+}
+
+ohos_executable("mtd_utils_tests_pdfrun") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/pdfrun.c" ]
+}
+
+ohos_executable("mtd_utils_tests_gcd_hupper") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/gcd_hupper.c" ]
+}
+
+ohos_executable("mtd_utils_tests_rndwrite00") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/rndwrite00.c" ]
+}
+
+ohos_executable("mtd_utils_tests_fwrite00") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/fwrite00.c" ]
+}
+
+ohos_executable("mtd_utils_tests_rmdir00") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/rmdir00.c" ]
+}
+
+ohos_executable("mtd_utils_tests_rndrm00") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/rndrm00.c" ]
+}
+
+ohos_executable("mtd_utils_tests_rndrm99") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ ":fs_tests_library" ]
+  include_dirs = [ "lib" ]
+  sources = [ "stress/atoms/rndrm99.c" ]
+}
+
+# fs-tests/utils
+ohos_executable("mtd_utils_tests_fstest_monitor") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "lib" ]
+  sources = [ "utils/fstest_monitor.c" ]
+}
+
+ohos_executable("mtd_utils_tests_free_space") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "lib" ]
+  sources = [ "utils/free_space.c" ]
+}
+
+group("fs_tests") {
+  deps = [
+    # fs-tests/integrity
+    ":mtd_utils_tests_free_space",
+
+    # fs-tests/utils
+    ":mtd_utils_tests_fstest_monitor",
+    ":mtd_utils_tests_ftrunc",
+    ":mtd_utils_tests_fwrite00",
+    ":mtd_utils_tests_gcd_hupper",
+    ":mtd_utils_tests_integck",
+    ":mtd_utils_tests_orph",
+    ":mtd_utils_tests_pdfrun",
+    ":mtd_utils_tests_perf",
+    ":mtd_utils_tests_rmdir00",
+    ":mtd_utils_tests_rndrm00",
+    ":mtd_utils_tests_rndrm99",
+    ":mtd_utils_tests_rndwrite00",
+
+    # fs-tests/stress
+    ":mtd_utils_tests_stress_1",
+    ":mtd_utils_tests_stress_2",
+    ":mtd_utils_tests_stress_3",
+
+    # fs-tests/simple
+    ":mtd_utils_tests_test_1",
+    ":mtd_utils_tests_test_2",
+  ]
+}
diff --git a/tests/jittertest/BUILD.gn b/tests/jittertest/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..f5c3b1b57ff79bd70a8c6369fd820248c087410e
--- /dev/null
+++ b/tests/jittertest/BUILD.gn
@@ -0,0 +1,20 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("mtd_utils_tests_JitterTest") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [ "JitterTest.c" ]
+}
+
+ohos_executable("mtd_utils_tests_plotJittervsFill") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  sources = [ "plotJittervsFill.c" ]
+}
+
+group("jitter_test") {
+  deps = [
+    ":mtd_utils_tests_JitterTest",
+    ":mtd_utils_tests_plotJittervsFill",
+  ]
+}
diff --git a/tests/mtd-tests/BUILD.gn b/tests/mtd-tests/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..10c702848d5ec5655d9b1087d2d81ef0fb2d5bac
--- /dev/null
+++ b/tests/mtd-tests/BUILD.gn
@@ -0,0 +1,57 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("mtd_utils_tests_flash_torture") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "flash_torture.c" ]
+}
+
+ohos_executable("mtd_utils_tests_flash_stress") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "flash_stress.c" ]
+}
+
+ohos_executable("mtd_utils_tests_flash_speed") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "flash_speed.c" ]
+}
+
+ohos_executable("mtd_utils_tests_nandbiterrs") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "nandbiterrs.c" ]
+}
+
+ohos_executable("mtd_utils_tests_flash_readtest") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "flash_readtest.c" ]
+}
+
+ohos_executable("mtd_utils_tests_nandpagetest") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "nandpagetest.c" ]
+}
+
+ohos_executable("mtd_utils_tests_nandsubpagetest") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [ "//third_party/mtd-utils/lib:mtd" ]
+  sources = [ "nandsubpagetest.c" ]
+}
+
+group("mtd_tests") {
+  deps = [
+    ":mtd_utils_tests_flash_readtest",
+    ":mtd_utils_tests_flash_speed",
+    ":mtd_utils_tests_flash_stress",
+    ":mtd_utils_tests_flash_torture",
+    ":mtd_utils_tests_nandbiterrs",
+    ":mtd_utils_tests_nandpagetest",
+    ":mtd_utils_tests_nandsubpagetest",
+  ]
+}
diff --git a/tests/ubi-tests/BUILD.gn b/tests/ubi-tests/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..fa66a0cc941c7997dc4d03ce0e0cc3b4176461cf
--- /dev/null
+++ b/tests/ubi-tests/BUILD.gn
@@ -0,0 +1,156 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_static_library("ubi_tests_library") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [ "." ]
+  sources = [ "helpers.c" ]
+}
+
+ohos_executable("mtd_utils_tests_io_basic") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "io_basic.c" ]
+}
+
+ohos_executable("mtd_utils_tests_io_update") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "io_update.c" ]
+}
+
+ohos_executable("mtd_utils_tests_io_paral") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  cflags = [ "-pthread" ]
+  sources = [ "io_paral.c" ]
+}
+
+ohos_executable("mtd_utils_tests_io_read") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "io_read.c" ]
+}
+
+ohos_executable("mtd_utils_tests_volrefcnt") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "volrefcnt.c" ]
+}
+
+ohos_executable("mtd_utils_tests_integ") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "integ.c" ]
+}
+
+ohos_executable("mtd_utils_tests_mkvol_basic") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "mkvol_basic.c" ]
+}
+
+ohos_executable("mtd_utils_tests_mkvol_bad") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "mkvol_bad.c" ]
+}
+
+ohos_executable("mtd_utils_tests_mkvol_paral") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  cflags = [ "-pthread" ]
+  sources = [ "mkvol_paral.c" ]
+}
+
+ohos_executable("mtd_utils_tests_mkvol_rsvol") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  include_dirs = [
+    ".",
+    "../../ubi-utils",
+  ]
+  deps = [
+    ":ubi_tests_library",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "rsvol.c" ]
+}
+
+group("ubi_tests") {
+  deps = [
+    ":mtd_utils_tests_integ",
+    ":mtd_utils_tests_io_basic",
+    ":mtd_utils_tests_io_paral",
+    ":mtd_utils_tests_io_read",
+    ":mtd_utils_tests_io_update",
+    ":mtd_utils_tests_mkvol_bad",
+    ":mtd_utils_tests_mkvol_basic",
+    ":mtd_utils_tests_mkvol_paral",
+    ":mtd_utils_tests_mkvol_rsvol",
+    ":mtd_utils_tests_volrefcnt",
+  ]
+}
diff --git a/ubi-utils/BUILD.gn b/ubi-utils/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..bb600ae9f9b5dc02c9a8a12bb3a9998b4faa43bc
--- /dev/null
+++ b/ubi-utils/BUILD.gn
@@ -0,0 +1,143 @@
+# Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+
+import("//build/ohos.gni")
+
+ohos_executable("ubiupdatevol") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubiupdatevol.c" ]
+}
+
+ohos_executable("ubimkvol") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubimkvol.c" ]
+}
+
+ohos_executable("ubirmvol") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubirmvol.c" ]
+}
+
+ohos_executable("ubicrc32") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubicrc32.c" ]
+}
+
+ohos_executable("ubinfo") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubinfo.c" ]
+}
+
+ohos_executable("ubiattach") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubiattach.c" ]
+}
+
+ohos_executable("ubidetach") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubidetach.c" ]
+}
+
+ohos_executable("ubinize") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:iniparser",
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+    "//third_party/mtd-utils/lib:ubigen",
+  ]
+  sources = [ "ubinize.c" ]
+}
+
+ohos_executable("ubiformat") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:scan",
+    "//third_party/mtd-utils/lib:ubi",
+    "//third_party/mtd-utils/lib:ubigen",
+  ]
+  sources = [ "ubiformat.c" ]
+}
+
+ohos_executable("ubirename") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubirename.c" ]
+}
+
+ohos_executable("mtdinfo") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+    "//third_party/mtd-utils/lib:ubigen",
+  ]
+  sources = [ "mtdinfo.c" ]
+}
+
+ohos_executable("ubirsvol") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubirsvol.c" ]
+}
+
+ohos_executable("ubiblock") {
+  configs = [ "//third_party/mtd-utils:mtd_utils_config" ]
+  deps = [
+    "//third_party/mtd-utils/lib:mtd",
+    "//third_party/mtd-utils/lib:ubi",
+  ]
+  sources = [ "ubiblock.c" ]
+}
+
+group("mtd_utils_ubi") {
+  deps = [
+    ":mtdinfo",
+    ":ubiattach",
+    ":ubiblock",
+    ":ubicrc32",
+    ":ubidetach",
+    ":ubiformat",
+    ":ubimkvol",
+    ":ubinfo",
+    ":ubinize",
+    ":ubirename",
+    ":ubirmvol",
+    ":ubirsvol",
+    ":ubiupdatevol",
+  ]
+}