diff --git a/tools/rockchip/boot_merger.c b/tools/rockchip/boot_merger.c
index 923bdb75ba..f258f6c3c3 100644
--- a/tools/rockchip/boot_merger.c
+++ b/tools/rockchip/boot_merger.c
@@ -21,6 +21,7 @@ bool gDebug =
 options gOpts;
 char gLegacyPath[MAX_LINE_LEN] = { 0 };
 char gNewPath[MAX_LINE_LEN] = { 0 };
+static char *gPrePath;
 char gSubfix[MAX_LINE_LEN] = OUT_SUBFIX;
 char gEat[MAX_LINE_LEN];
 char *gConfigPath;
@@ -148,6 +149,10 @@ static inline void fixPath(char *path)
 			strcpy(path, gNewPath);
 			strcat(path, tmp);
 		}
+	} else if (gPrePath) {
+		strcpy(tmp, path);
+		strcpy(path, gPrePath);
+		strcat(path, tmp);
 	}
 }
 
@@ -976,6 +981,7 @@ static void printHelp(void)
 	printf("\t" OPT_VERSION "\t\tDisplay version information.\n");
 	printf("\t" OPT_SUBFIX "\t\tSpec subfix.\n");
 	printf("\t" OPT_REPLACE "\t\tReplace some part of binary path.\n");
+	printf("\t" OPT_PREPATH "\t\tAdd prefix path of binary path.\n");
 	printf("\t" OPT_SIZE
 	       "\t\tImage size.\"--size [image KB size]\", must be 512KB aligned\n");
 	printf("Usage2: boot_merger [options] [parameter]\n");
@@ -1021,6 +1027,9 @@ int main(int argc, char **argv)
 			snprintf(gLegacyPath, sizeof(gLegacyPath), "%s", argv[i]);
 			i++;
 			snprintf(gNewPath, sizeof(gNewPath), "%s", argv[i]);
+		} else if (!strcmp(OPT_PREPATH, argv[i])) {
+			i++;
+			gPrePath = argv[i];
 		} else if (!strcmp(OPT_SIZE, argv[i])) {
 			g_merge_max_size = strtoul(argv[++i], NULL, 10);
 			if (g_merge_max_size % 512) {
diff --git a/tools/rockchip/boot_merger.h b/tools/rockchip/boot_merger.h
index ef25a2236d..97586d7cba 100644
--- a/tools/rockchip/boot_merger.h
+++ b/tools/rockchip/boot_merger.h
@@ -186,6 +186,7 @@ typedef struct {
 #define OPT_UNPACK          "--unpack"
 #define OPT_SUBFIX          "--subfix"
 #define OPT_REPLACE         "--replace"
+#define OPT_PREPATH         "--prepath"
 #define OPT_SIZE	    "--size"
 
 #define OPT_CHIP	"-c"
diff --git a/tools/rockchip/trust_merger.c b/tools/rockchip/trust_merger.c
index 81e4da8a9b..a33125e224 100644
--- a/tools/rockchip/trust_merger.c
+++ b/tools/rockchip/trust_merger.c
@@ -51,6 +51,7 @@ static uint8_t gBuf[BL3X_FILESIZE_MAX];
 static bool gSubfix;
 static char *gLegacyPath;
 static char *gNewPath;
+static char *gPrePath;
 static uint8_t gRSAmode = RSA_SEL_2048;
 static uint8_t gSHAmode = SHA_SEL_256;
 static bool gIgnoreBL32;
@@ -109,6 +110,10 @@ static inline void fixPath(char *path)
 			strcpy(path, gNewPath);
 			strcat(path, tmp);
 		}
+	} else if (gPrePath) {
+		strcpy(tmp, path);
+		strcpy(path, gPrePath);
+		strcat(path, tmp);
 	}
 }
 
@@ -833,6 +838,7 @@ static void printHelp(void)
 	printf("\t" OPT_VERSION "\t\tDisplay version information.\n");
 	printf("\t" OPT_SUBFIX "\t\tSpec subfix.\n");
 	printf("\t" OPT_REPLACE "\t\tReplace some part of binary path.\n");
+	printf("\t" OPT_PREPATH "\t\tAdd prefix path of binary path.\n");
 	printf("\t" OPT_RSA "\t\t\tRSA mode.\"--rsa [mode]\", [mode] can be: "
 	       "0(none), 1(1024), 2(2048), 3(2048 pss).\n");
 	printf("\t" OPT_SHA
@@ -870,6 +876,9 @@ int main(int argc, char **argv)
 			gLegacyPath = argv[i];
 			i++;
 			gNewPath = argv[i];
+		} else if (!strcmp(OPT_PREPATH, argv[i])) {
+			i++;
+			gPrePath = argv[i];
 		} else if (!strcmp(OPT_RSA, argv[i])) {
 			i++;
 			if (!is_digit(*(argv[i]))) {
diff --git a/tools/rockchip/trust_merger.h b/tools/rockchip/trust_merger.h
index 2a46e60dfc..e25683fdf3 100644
--- a/tools/rockchip/trust_merger.h
+++ b/tools/rockchip/trust_merger.h
@@ -44,6 +44,7 @@
 #define OPT_UNPACK          "--unpack"
 #define OPT_SUBFIX          "--subfix"
 #define OPT_REPLACE         "--replace"
+#define OPT_PREPATH         "--prepath"
 #define OPT_RSA		    "--rsa"
 #define OPT_SHA		    "--sha"
 #define OPT_SIZE	    "--size"