diff --git a/begetd.gni b/begetd.gni
index cd1a134c4fece50734fa86beb875d00b33ad9d4b..920fc32d0018e7bf593635322bcfb935089b85f1 100755
--- a/begetd.gni
+++ b/begetd.gni
@@ -21,9 +21,8 @@ declare_args() {
   enable_ohos_startup_init_feature_begetctl_liteos = false
   enable_ohos_startup_init_lite_use_thirdparty_mbedtls = true
   enable_ohos_startup_init_lite_use_posix_file_api = false
+  enable_ohos_startup_init_feature_loader = false
   config_ohos_startup_init_lite_data_path = ""
-  if (defined(product_name) && product_name == "rk3568") {
-    boot_kernel_extended_cmdline =
-        "hardware=rk3568 default_boot_device=fe310000.sdhci"
-  }
+
+  # boot_kernel_extended_cmdline for extend cmdline
 }
diff --git a/services/begetctl/BUILD.gn b/services/begetctl/BUILD.gn
index 915707a94bef5df1438edabb55e0ad564b884a40..6b3d876f708da7f4e157df00c34ae4c4ba6cd4aa 100755
--- a/services/begetctl/BUILD.gn
+++ b/services/begetctl/BUILD.gn
@@ -73,7 +73,7 @@ if (defined(ohos_lite)) {
 
     defines = [ "_GNU_SOURCE" ]
 
-    if (defined(product_name) && product_name == "rk3568") {
+    if (enable_ohos_startup_init_feature_loader) {
       defines += [ "PRODUCT_RK" ]
     }
 
diff --git a/services/init/standard/BUILD.gn b/services/init/standard/BUILD.gn
index d001aaee939bf8155d4c1347505b8931c2d8e78f..66bdfee60ca93cb9fc8151132ff5e2a8bcf361ec 100644
--- a/services/init/standard/BUILD.gn
+++ b/services/init/standard/BUILD.gn
@@ -121,7 +121,7 @@ ohos_executable("init") {
     defines += [ "ASAN_DETECTOR" ]
   }
 
-  if (defined(product_name) && product_name == "rk3568") {
+  if (enable_ohos_startup_init_feature_loader) {
     defines += [ "PRODUCT_RK" ]
   }
   version_script = get_label_info(
diff --git a/services/param/linux/BUILD.gn b/services/param/linux/BUILD.gn
index 33f9576ae76e282623938484bae8acd59520fb3c..8324cc7faedee8542b9b0fea0ccb16bc80aa3d3d 100755
--- a/services/param/linux/BUILD.gn
+++ b/services/param/linux/BUILD.gn
@@ -108,10 +108,6 @@ if (defined(ohos_lite)) {
       defines += [ "BOOT_EXTENDED_CMDLINE=\"${boot_kernel_extended_cmdline}\"" ]
     }
 
-    if ("${product_name}" == "m40") {
-      defines += [ "USE_MTK_EMMC" ]
-    }
-
     if (build_selinux) {
       include_dirs += [
         "//third_party/selinux/libselinux/include/",
diff --git a/services/param/manager/param_server.c b/services/param/manager/param_server.c
index e75a0c8285cc30c722e54971b818c872d7d513ce..5074e783337461fed509c7e003b82ab7b200b293 100755
--- a/services/param/manager/param_server.c
+++ b/services/param/manager/param_server.c
@@ -58,34 +58,10 @@ static int CommonDealFun(const char *name, const char *value, int res)
     return ret;
 }
 
-static int SnDealFun(const char *name, const char *value, int res)
+static int ReadSnFromFile(const char *name, const char *file)
 {
-#ifdef USE_MTK_EMMC
-    static const char SN_FILE[] = {"/proc/bootdevice/cid"};
-#else
-    static const char SN_FILE[] = {"/sys/block/mmcblk0/device/cid"};
-#endif
-    int ret = CheckParamName(name, 0);
-    PARAM_CHECK(ret == 0, return ret, "Invalid name %s", name);
-    char *data = NULL;
-    if (res != 0) {  // if cmdline not set sn or set sn value is null,read sn from default file
-        data = ReadFileData(SN_FILE);
-        if (data == NULL) {
-            PARAM_LOGE("Error, Read sn from default file failed!");
-            return -1;
-        }
-    } else if (value[0] == '/') {
-        data = ReadFileData(value);
-        if (data == NULL) {
-            PARAM_LOGE("Error, Read sn from cmdline file failed!");
-            return -1;
-        }
-    } else {
-        PARAM_LOGV("**** name %s, value %s", name, value);
-        ret = WriteParam(name, value, NULL, 0);
-        PARAM_CHECK(ret == 0, return ret, "Failed to write param %s %s", name, value);
-        return ret;
-    }
+    char *data = ReadFileData(file);
+    PARAM_CHECK(data != NULL, return -1, "Read sn from %s file failed!", file);
 
     int index = 0;
     for (size_t i = 0; i < strlen(data); i++) {
@@ -100,11 +76,38 @@ static int SnDealFun(const char *name, const char *value, int res)
     }
     data[index] = '\0';
     PARAM_LOGV("**** name %s, value %s", name, data);
-    ret = WriteParam(name, data, NULL, 0);
-    PARAM_CHECK(ret == 0, free(data);
-        return ret, "Failed to write param %s %s", name, data);
+    int ret = WriteParam(name, data, NULL, 0);
     free(data);
+    PARAM_CHECK(ret == 0, return ret, "Failed to write param %s %s", name, data);
+    return ret;
+}
 
+static int SnDealFun(const char *name, const char *value, int res)
+{
+    const char *snFileList [] = {
+        "/sys/block/mmcblk0/device/cid",
+        "/proc/bootdevice/cid"
+    };
+    int ret = CheckParamName(name, 0);
+    PARAM_CHECK(ret == 0, return ret, "Invalid name %s", name);
+    if (value != NULL && res == 0 && value[0] != '/') {
+        PARAM_LOGV("**** name %s, value %s", name, value);
+        ret = WriteParam(name, value, NULL, 0);
+        PARAM_CHECK(ret == 0, return ret, "Failed to write param %s %s", name, value);
+        return ret;
+    }
+    if (value != NULL && value[0] == '/') {
+        ret = ReadSnFromFile(name, value);
+        if (ret == 0) {
+            return ret;
+        }
+    }
+    for (size_t i = 0; i < ARRAY_LENGTH(snFileList); i++) {
+        ret = ReadSnFromFile(name, snFileList[i]);
+        if (ret == 0) {
+            break;
+        }
+    }
     return ret;
 }