diff --git a/tools/binman/test/225_dev.key b/tools/binman/test/225_dev.key
new file mode 100644
index 0000000..b36bad2
--- /dev/null
+++ b/tools/binman/test/225_dev.key
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/tools/binman/test/225_pre_load.dts b/tools/binman/test/225_pre_load.dts
new file mode 100644
index 0000000..c1ffe1a
--- /dev/null
+++ b/tools/binman/test/225_pre_load.dts
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha256,rsa2048";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <0x11223344>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};
diff --git a/tools/binman/test/226_pre_load_pkcs.dts b/tools/binman/test/226_pre_load_pkcs.dts
new file mode 100644
index 0000000..3db0a37
--- /dev/null
+++ b/tools/binman/test/226_pre_load_pkcs.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha256,rsa2048";
+			 padding-name = "pkcs-1.5";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <0x11223344>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};
diff --git a/tools/binman/test/227_pre_load_pss.dts b/tools/binman/test/227_pre_load_pss.dts
new file mode 100644
index 0000000..b1b01d5
--- /dev/null
+++ b/tools/binman/test/227_pre_load_pss.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha256,rsa2048";
+			 padding-name = "pss";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <0x11223344>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};
diff --git a/tools/binman/test/228_pre_load_invalid_padding.dts b/tools/binman/test/228_pre_load_invalid_padding.dts
new file mode 100644
index 0000000..84fe289
--- /dev/null
+++ b/tools/binman/test/228_pre_load_invalid_padding.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha256,rsa2048";
+			 padding-name = "padding";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <1>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};
diff --git a/tools/binman/test/229_pre_load_invalid_sha.dts b/tools/binman/test/229_pre_load_invalid_sha.dts
new file mode 100644
index 0000000..a2b6725
--- /dev/null
+++ b/tools/binman/test/229_pre_load_invalid_sha.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha2560,rsa2048";
+			 padding-name = "pkcs-1.5";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <1>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};
diff --git a/tools/binman/test/230_pre_load_invalid_algo.dts b/tools/binman/test/230_pre_load_invalid_algo.dts
new file mode 100644
index 0000000..34c8d34
--- /dev/null
+++ b/tools/binman/test/230_pre_load_invalid_algo.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha256,rsa20480";
+			 padding-name = "pkcs-1.5";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <1>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};
diff --git a/tools/binman/test/231_pre_load_invalid_key.dts b/tools/binman/test/231_pre_load_invalid_key.dts
new file mode 100644
index 0000000..08d5a75
--- /dev/null
+++ b/tools/binman/test/231_pre_load_invalid_key.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		pre-load {
+			content = <&image>;
+			 algo-name = "sha256,rsa4096";
+			 padding-name = "pkcs-1.5";
+			 key-name = "tools/binman/test/225_dev.key";
+			 header-size = <4096>;
+			 version = <1>;
+		};
+
+		image: blob-ext {
+			filename = "refcode.bin";
+		};
+	};
+};