esp32c3: added target component

components/esp32c3/esp_crypto_lock.c

@@ -0,0 +1,98 @@
+// 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.
+
+#include <sys/lock.h>
+
+#include "esp_crypto_lock.h"
+
+/* Lock overview:
+SHA: independent
+AES: independent
+MPI/RSA: independent
+HMAC: needs SHA
+DS: needs HMAC (which needs SHA), AES and MPI
+*/
+
+/* Lock for DS peripheral */
+static _lock_t s_crypto_ds_lock;
+
+/* Lock for HMAC peripheral */
+static _lock_t s_crypto_hmac_lock;
+
+/* Lock for the SHA peripheral, also used by the HMAC and DS peripheral */
+static _lock_t s_crypto_sha_lock;
+
+/* Lock for the AES peripheral, also used by DS peripheral */
+static _lock_t s_crypto_aes_lock;
+
+/* Lock for the MPI/RSA peripheral, also used by the DS peripheral */
+static _lock_t s_crypto_mpi_lock;
+
+void esp_crypto_hmac_lock_acquire(void)
+{
+    _lock_acquire(&s_crypto_hmac_lock);
+    esp_crypto_sha_lock_acquire();
+}
+
+void esp_crypto_hmac_lock_release(void)
+{
+    esp_crypto_sha_lock_release();
+    _lock_release(&s_crypto_hmac_lock);
+}
+
+void esp_crypto_ds_lock_acquire(void)
+{
+    _lock_acquire(&s_crypto_ds_lock);
+    esp_crypto_hmac_lock_acquire();
+    esp_crypto_aes_lock_acquire();
+    esp_crypto_mpi_lock_acquire();
+}
+
+void esp_crypto_ds_lock_release(void)
+{
+    esp_crypto_mpi_lock_release();
+    esp_crypto_aes_lock_release();
+    esp_crypto_hmac_lock_release();
+    _lock_release(&s_crypto_ds_lock);
+}
+
+void esp_crypto_sha_lock_acquire(void)
+{
+    _lock_acquire(&s_crypto_sha_lock);
+}
+
+void esp_crypto_sha_lock_release(void)
+{
+    _lock_release(&s_crypto_sha_lock);
+}
+
+void esp_crypto_aes_lock_acquire(void)
+{
+    _lock_acquire(&s_crypto_aes_lock);
+}
+
+void esp_crypto_aes_lock_release(void)
+{
+    _lock_release(&s_crypto_aes_lock);
+}
+
+void esp_crypto_mpi_lock_acquire(void)
+{
+    _lock_acquire(&s_crypto_mpi_lock);
+}
+
+void esp_crypto_mpi_lock_release(void)
+{
+    _lock_release(&s_crypto_mpi_lock);
+}