diff --git a/components/esp_rom/include/esp32/rom/secure_boot.h b/components/esp_rom/include/esp32/rom/secure_boot.h
index 1eb69e2537..50a3fcd494 100644
--- a/components/esp_rom/include/esp32/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32/rom/secure_boot.h
@@ -1,21 +1,12 @@
-// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include "sdkconfig.h"
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include "ets_sys.h"
@@ -128,5 +119,3 @@ bool ets_use_secure_boot_v2(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32c3/rom/secure_boot.h b/components/esp_rom/include/esp32c3/rom/secure_boot.h
index 71cf7250d2..a9d417283b 100644
--- a/components/esp_rom/include/esp32c3/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32c3/rom/secure_boot.h
@@ -1,19 +1,10 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -24,9 +15,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -127,5 +115,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32h2/rom/secure_boot.h b/components/esp_rom/include/esp32h2/rom/secure_boot.h
index 71cf7250d2..36a490d858 100644
--- a/components/esp_rom/include/esp32h2/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32h2/rom/secure_boot.h
@@ -1,19 +1,10 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -24,9 +15,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -127,5 +115,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32s2/rom/secure_boot.h b/components/esp_rom/include/esp32s2/rom/secure_boot.h
index 8e88081786..a0fcecfd3c 100644
--- a/components/esp_rom/include/esp32s2/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32s2/rom/secure_boot.h
@@ -1,19 +1,10 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include "ets_sys.h"
@@ -23,9 +14,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -126,5 +114,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32s3/rom/secure_boot.h b/components/esp_rom/include/esp32s3/rom/secure_boot.h
index e720697b3e..a372517b7a 100644
--- a/components/esp_rom/include/esp32s3/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32s3/rom/secure_boot.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
@@ -23,9 +15,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
diff --git a/components/esp_rom/include/esp8684/rom/secure_boot.h b/components/esp_rom/include/esp8684/rom/secure_boot.h
index 1b21ee8f11..3dcaf6f09c 100644
--- a/components/esp_rom/include/esp8684/rom/secure_boot.h
+++ b/components/esp_rom/include/esp8684/rom/secure_boot.h
@@ -4,8 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -16,9 +15,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -119,5 +115,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/tools/ci/check_copyright_ignore.txt b/tools/ci/check_copyright_ignore.txt
index b4ac68ac29..d67759e8b9 100644
--- a/tools/ci/check_copyright_ignore.txt
+++ b/tools/ci/check_copyright_ignore.txt
@@ -747,7 +747,6 @@ components/esp_rom/include/esp32/rom/md5_hash.h
 components/esp_rom/include/esp32/rom/miniz.h
 components/esp_rom/include/esp32/rom/rsa_pss.h
 components/esp_rom/include/esp32/rom/rtc.h
-components/esp_rom/include/esp32/rom/secure_boot.h
 components/esp_rom/include/esp32/rom/sha.h
 components/esp_rom/include/esp32/rom/spi_flash.h
 components/esp_rom/include/esp32/rom/tbconsole.h
@@ -771,7 +770,6 @@ components/esp_rom/include/esp32c3/rom/miniz.h
 components/esp_rom/include/esp32c3/rom/rom_layout.h
 components/esp_rom/include/esp32c3/rom/rsa_pss.h
 components/esp_rom/include/esp32c3/rom/rtc.h
-components/esp_rom/include/esp32c3/rom/secure_boot.h
 components/esp_rom/include/esp32c3/rom/sha.h
 components/esp_rom/include/esp32c3/rom/spi_flash.h
 components/esp_rom/include/esp32c3/rom/tjpgd.h
@@ -794,7 +792,6 @@ components/esp_rom/include/esp32h2/rom/miniz.h
 components/esp_rom/include/esp32h2/rom/rom_layout.h
 components/esp_rom/include/esp32h2/rom/rsa_pss.h
 components/esp_rom/include/esp32h2/rom/rtc.h
-components/esp_rom/include/esp32h2/rom/secure_boot.h
 components/esp_rom/include/esp32h2/rom/sha.h
 components/esp_rom/include/esp32h2/rom/spi_flash.h
 components/esp_rom/include/esp32h2/rom/tjpgd.h
@@ -815,7 +812,6 @@ components/esp_rom/include/esp32s2/rom/miniz.h
 components/esp_rom/include/esp32s2/rom/opi_flash.h
 components/esp_rom/include/esp32s2/rom/rsa_pss.h
 components/esp_rom/include/esp32s2/rom/rtc.h
-components/esp_rom/include/esp32s2/rom/secure_boot.h
 components/esp_rom/include/esp32s2/rom/sha.h
 components/esp_rom/include/esp32s2/rom/spi_flash.h
 components/esp_rom/include/esp32s2/rom/uart.h
@@ -846,7 +842,6 @@ components/esp_rom/include/esp32s3/rom/miniz.h
 components/esp_rom/include/esp32s3/rom/opi_flash.h
 components/esp_rom/include/esp32s3/rom/rom_layout.h
 components/esp_rom/include/esp32s3/rom/rsa_pss.h
-components/esp_rom/include/esp32s3/rom/secure_boot.h
 components/esp_rom/include/esp32s3/rom/sha.h
 components/esp_rom/include/esp32s3/rom/spi_flash.h
 components/esp_rom/include/esp32s3/rom/tjpgd.h