arch/xtensa: Add arch layer SHA accelerator support for esp32[-s2|-s3]

Add arch layer SHA accelerator support for Xtensa based Espressif devices

Signed-off-by: Eren Terzioglu <eren.terzioglu@espressif.com>

arch/xtensa/src/common/espressif/Kconfig

@@ -61,6 +61,13 @@ config ESPRESSIF_LEDC
 	select PWM
 	select ARCH_HAVE_PWM_MULTICHAN
 
+config ESPRESSIF_SHA_ACCELERATOR
+	bool "SHA Accelerator"
+	depends on !ARCH_CHIP_ESP32
+	default n
+	---help---
+		Enable SHA accelerator support.
+
 config ESPRESSIF_I2S
 	bool
 	default n

arch/xtensa/src/common/espressif/Make.defs

@@ -84,6 +84,13 @@ ifeq ($(CONFIG_ESPRESSIF_DEDICATED_GPIO),y)
 CHIP_CSRCS += esp_dedic_gpio.c
 endif
 
+ifeq ($(CONFIG_ESPRESSIF_SHA_ACCELERATOR),y)
+CHIP_CSRCS += esp_sha.c
+ifeq ($(CONFIG_CRYPTO_CRYPTODEV_HARDWARE),y)
+CHIP_CSRCS += esp_crypto.c
+endif
+endif
+
 ifeq ($(CONFIG_SYSTEM_NXDIAG_ESPRESSIF_CHIP_WO_TOOL),y)
 CHIP_CSRCS += esp_nxdiag.c
 endif

arch/xtensa/src/common/espressif/esp_sha.h

@@ -0,0 +1,360 @@
+/****************************************************************************
+ * arch/xtensa/src/common/espressif/esp_sha.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#ifndef __ARCH_XTENSA_SRC_COMMON_ESPRESSIF_ESP_SHA_H
+#define __ARCH_XTENSA_SRC_COMMON_ESPRESSIF_ESP_SHA_H
+
+#include <nuttx/config.h>
+#include <stdint.h>
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+enum esp_sha_type_e
+{
+    ESP_SHA1_1 = 0,
+    ESP_SHA2_224,
+    ESP_SHA2_256,
+    ESP_SHA3_384,
+    ESP_SHA3_512,
+    ESP_SHA_TYPE_MAX
+};
+
+enum esp_sha_state_e
+{
+    ESP_SHA_STATE_INIT,
+    ESP_SHA_STATE_IN_PROCESS
+};
+
+/* SHA-1 context structure */
+
+struct esp_sha1_context_s
+{
+    uint32_t total[2];          /* number of bytes processed  */
+    uint32_t state[5];          /* intermediate digest state  */
+    unsigned char buffer[64];   /* data block being processed */
+    bool first_block;           /* if first then true, else false */
+    enum esp_sha_type_e mode;
+    enum esp_sha_state_e sha_state;
+};
+
+/* SHA-256 context structure */
+
+struct esp_sha256_context_s
+{
+    uint32_t total[2];          /* number of bytes processed  */
+    uint32_t state[8];          /* intermediate digest state  */
+    unsigned char buffer[64];   /* data block being processed */
+    bool first_block;           /* if first then true, else false */
+    enum esp_sha_type_e mode;
+    enum esp_sha_state_e sha_state;
+};
+
+/* SHA-512 context structure */
+
+struct esp_sha512_context_s
+{
+    uint64_t total[2];          /* number of bytes processed  */
+    uint64_t state[8];          /* intermediate digest state  */
+    unsigned char buffer[128];  /* data block being processed */
+    bool first_block;           /* if first then true, else false */
+    enum esp_sha_type_e mode;
+    enum esp_sha_state_e sha_state;
+};
+
+/****************************************************************************
+ * Name: esp_sha_init
+ *
+ * Description:
+ *   Initialize ESP32-C3 SHA hardware.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   OK is returned on success. Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha_init(void);
+
+/****************************************************************************
+ * Name: esp_sha1_init
+ *
+ * Description:
+ *   Initializes a SHA-1 context.
+ *
+ * Input Parameters:
+ *   ctx - The SHA-1 context to initialize
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void esp_sha1_init(struct esp_sha1_context_s *ctx);
+
+/****************************************************************************
+ * Name: esp_sha1_starts
+ *
+ * Description:
+ *   Starts a SHA-1 checksum calculation.
+ *
+ * Input Parameters:
+ *   ctx - The SHA-1 context to initialize
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *
+ ****************************************************************************/
+
+int esp_sha1_starts(struct esp_sha1_context_s *ctx);
+
+/****************************************************************************
+ * Name: esp_sha1_update
+ *
+ * Description:
+ *   Feeds an input buffer into an ongoing SHA-1 checksum calculation.
+ *
+ * Input Parameters:
+ *   ctx   - The SHA-1 context to use
+ *   input - The buffer holding the input data
+ *   ilen  - The length of the input data in Bytes
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *   Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha1_update(struct esp_sha1_context_s *ctx,
+                    const unsigned char *input,
+                    size_t ilen);
+
+/****************************************************************************
+ * Name: esp_sha1_finish
+ *
+ * Description:
+ *   Finishes the SHA-1 operation,
+ *   and writes the result to the output buffer.
+ *
+ * Input Parameters:
+ *   ctx    - The SHA-1 context to use
+ *   output - The SHA-1 checksum result
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *   Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha1_finish(struct esp_sha1_context_s *ctx,
+                    unsigned char output[20]);
+
+/****************************************************************************
+ * Name: esp_sha256_init
+ *
+ * Description:
+ *   Initializes a SHA-256 context.
+ *
+ * Input Parameters:
+ *   ctx - The SHA-256 context to initialize
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void esp_sha256_init(struct esp_sha256_context_s *ctx);
+
+/****************************************************************************
+ * Name: esp_sha256_starts
+ *
+ * Description:
+ *   Starts a SHA-224 or SHA-256 checksum calculation.
+ *
+ * Input Parameters:
+ *   ctx   - The SHA-256 context to initialize
+ *   is224 - Determines which function to use
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *
+ ****************************************************************************/
+
+int esp_sha256_starts(struct esp_sha256_context_s *ctx, bool is224);
+
+/****************************************************************************
+ * Name: esp_sha256_update
+ *
+ * Description:
+ *   Feeds an input buffer into an ongoing SHA-224 or SHA-256
+ *   checksum calculation.
+ *
+ * Input Parameters:
+ *   ctx   - The SHA-256 context to use
+ *   input - The buffer holding the input data
+ *   ilen  - The length of the input data in Bytes
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *   Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha256_update(struct esp_sha256_context_s *ctx,
+                      const unsigned char *input,
+                      size_t ilen);
+
+/****************************************************************************
+ * Name: esp_sha256_finish
+ *
+ * Description:
+ *   Finishes the SHA-224 or SHA-256 operation, and writes the result to
+ *   the output buffer.
+ *
+ * Input Parameters:
+ *   ctx    - The SHA-256 context to use
+ *   output - The SHA-256 checksum result
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *   Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha256_finish(struct esp_sha256_context_s *ctx,
+                      unsigned char output[32]);
+
+/****************************************************************************
+ * Name: esp_sha512_init
+ *
+ * Description:
+ *   Initializes a SHA-512 context.
+ *
+ * Input Parameters:
+ *   ctx - The SHA-512 context to initialize
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void esp_sha512_init(struct esp_sha512_context_s *ctx);
+
+/****************************************************************************
+ * Name: esp_sha512_starts
+ *
+ * Description:
+ *   Starts a SHA-384 or SHA-512 checksum calculation.
+ *
+ * Input Parameters:
+ *   ctx   - The SHA-512 context to initialize
+ *   is384 - Determines which function to use
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *
+ ****************************************************************************/
+
+int esp_sha512_starts(struct esp_sha512_context_s *ctx, bool is384);
+
+/****************************************************************************
+ * Name: esp_sha512_update
+ *
+ * Description:
+ *   Feeds an input buffer into an ongoing SHA-384 or SHA-512
+ *   checksum calculation.
+ *
+ * Input Parameters:
+ *   ctx   - The SHA-512 context to use
+ *   input - The buffer holding the input data
+ *   ilen  - The length of the input data in Bytes
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *   Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha512_update(struct esp_sha512_context_s *ctx,
+                      const unsigned char *input,
+                      size_t ilen);
+
+/****************************************************************************
+ * Name: esp_sha512_finish
+ *
+ * Description:
+ *   Finishes the SHA-384 or SHA-512 operation, and writes the result to
+ *   the output buffer.
+ *
+ * Input Parameters:
+ *   ctx    - The SHA-512 context to use
+ *   output - The SHA-512 checksum result
+ *
+ * Returned Value:
+ *   OK is returned on success.
+ *   Otherwise, a negated errno value is returned.
+ *
+ ****************************************************************************/
+
+int esp_sha512_finish(struct esp_sha512_context_s *ctx,
+                      unsigned char output[64]);
+
+/****************************************************************************
+ * Name: esp_sha512_free
+ *
+ * Description:
+ *   Clears a SHA-512 context.
+ *
+ * Input Parameters:
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void esp_sha512_free(struct esp_sha512_context_s *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+#undef EXTERN
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_XTENSA_SRC_COMMON_ESPRESSIF_ESP_SHA_H */

arch/xtensa/src/esp32s2/hal.mk

@@ -158,9 +158,11 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)rmt_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)sdm_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)i2s_hal.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)sha_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)timer_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)uart_hal_iram.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)uart_hal.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)dport_access_common.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)$(CHIP_SERIES)$(DELIM)adc_periph.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)$(CHIP_SERIES)$(DELIM)dedic_gpio_periph.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)$(CHIP_SERIES)$(DELIM)gpio_periph.c

arch/xtensa/src/esp32s3/hal.mk

@@ -148,6 +148,7 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)rmt_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)sdm_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)i2s_hal.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)sha_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)mcpwm_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)timer_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)cache_hal.c
@@ -165,6 +166,7 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)log$
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)log$(DELIM)src$(DELIM)noos$(DELIM)log_timestamp.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)log$(DELIM)src$(DELIM)os$(DELIM)log_write.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)mbedtls$(DELIM)port$(DELIM)sha$(DELIM)core$(DELIM)esp_sha256.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)dport_access_common.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)$(CHIP_SERIES)$(DELIM)dedic_gpio_periph.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)$(CHIP_SERIES)$(DELIM)gdma_periph.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)$(CHIP_SERIES)$(DELIM)adc_periph.c