1 files changed, 59 insertions, 0 deletions
diff --git a/include/drivers/st/stm32_saes.h b/include/drivers/st/stm32_saes.h
new file mode 100644
index 0000000..0a50438
--- /dev/null
+++ b/include/drivers/st/stm32_saes.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STM32_SAES_H
+#define STM32_SAES_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define DT_SAES_COMPAT		"st,stm32-saes"
+
+struct stm32_saes_platdata {
+	uintptr_t base;
+	unsigned long clock_id;
+	unsigned int reset_id;
+};
+
+enum stm32_saes_chaining_mode {
+	STM32_SAES_MODE_ECB,
+	STM32_SAES_MODE_CBC,
+	STM32_SAES_MODE_CTR,
+	STM32_SAES_MODE_GCM,
+	STM32_SAES_MODE_CCM, /* Not use in TF-A */
+};
+
+enum stm32_saes_key_selection {
+	STM32_SAES_KEY_SOFT,
+	STM32_SAES_KEY_DHU,           /* Derived HW unique key */
+	STM32_SAES_KEY_BH,            /* Boot HW key */
+	STM32_SAES_KEY_BHU_XOR_BH,    /* XOR of DHUK and BHK */
+	STM32_SAES_KEY_WRAPPED
+};
+
+struct stm32_saes_context {
+	uintptr_t base;
+	uint32_t cr;
+	uint32_t assoc_len;
+	uint32_t load_len;
+	uint32_t key[8]; /* In HW byte order */
+	uint32_t iv[4];  /* In HW byte order */
+};
+
+int stm32_saes_driver_init(void);
+
+int stm32_saes_init(struct stm32_saes_context *ctx, bool is_decrypt,
+		    enum stm32_saes_chaining_mode ch_mode, enum stm32_saes_key_selection key_select,
+		    const void *key, size_t key_len, const void *iv, size_t iv_len);
+int stm32_saes_update(struct stm32_saes_context *ctx, bool last_block,
+		      uint8_t *data_in, uint8_t *data_out, size_t data_len);
+int stm32_saes_update_assodata(struct stm32_saes_context *ctx, bool last_block,
+			       uint8_t *data, size_t data_len);
+int stm32_saes_update_load(struct stm32_saes_context *ctx, bool last_block,
+			   uint8_t *data_in, uint8_t *data_out, size_t data_len);
+int stm32_saes_final(struct stm32_saes_context *ctx, uint8_t *tag, size_t tag_len);
+#endif