feat(esp_hw_support): Add esp_crypto_lock layer for esp32c2

components/esp_hw_support/include/soc/esp32c2/esp_crypto_lock.h

@@ -0,0 +1,27 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Acquire lock for the ECC cryptography peripheral.
+ *
+ */
+void esp_crypto_ecc_lock_acquire(void);
+
+/**
+ * @brief Release lock for the ECC cryptography peripheral.
+ *
+ */
+void esp_crypto_ecc_lock_release(void);
+
+#ifdef __cplusplus
+}
+#endif

components/esp_hw_support/port/esp32c2/CMakeLists.txt

@@ -7,7 +7,8 @@ set(srcs "rtc_clk_init.c"
 
 if(NOT BOOTLOADER_BUILD)
 
-    list(APPEND srcs "sar_periph_ctrl.c")
+    list(APPEND srcs "esp_crypto_lock.c"
+                     "sar_periph_ctrl.c")
 
 endif()
 

components/esp_hw_support/port/esp32c2/esp_crypto_lock.c

@@ -0,0 +1,26 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <sys/lock.h>
+
+#include "esp_crypto_lock.h"
+
+/* Lock overview:
+ECC: independent
+*/
+
+/* Lock for ECC peripheral */
+static _lock_t s_crypto_ecc_lock;
+
+void esp_crypto_ecc_lock_acquire(void)
+{
+    _lock_acquire(&s_crypto_ecc_lock);
+}
+
+void esp_crypto_ecc_lock_release(void)
+{
+    _lock_release(&s_crypto_ecc_lock);
+}