ad431dcc23
This patch completes the addition of support for the STM32L4 AES accelerator by introducing conditional handling for different STM32 AES HAL variants. Key changes include: - Created device tree bindings `st,stm32l4-aes` for STM32L4 AES - Replaced `copy_reverse_words` with `copy_words_adjust_endianness` to handle endianness conversion for different variants. Signed-off-by: Lucas Dietrich <ld.adecy@gmail.com>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
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* Copyright (c) 2020 Markus Fuchs <markus.fuchs@de.sauter-bc.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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*/
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#ifndef ZEPHYR_DRIVERS_CRYPTO_CRYPTO_STM32_PRIV_H_
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#define ZEPHYR_DRIVERS_CRYPTO_CRYPTO_STM32_PRIV_H_
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#if DT_HAS_COMPAT_STATUS_OKAY(st_stm32l4_aes)
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#define crypt_config_t CRYP_InitTypeDef
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#else
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#define crypt_config_t CRYP_ConfigTypeDef
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#endif
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/* Maximum supported key length is 256 bits */
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#define CRYPTO_STM32_AES_MAX_KEY_LEN (256 / 8)
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struct crypto_stm32_config {
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const struct reset_dt_spec reset;
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struct stm32_pclken pclken;
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};
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struct crypto_stm32_data {
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CRYP_HandleTypeDef hcryp;
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struct k_sem device_sem;
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struct k_sem session_sem;
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};
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struct crypto_stm32_session {
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crypt_config_t config;
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uint32_t key[CRYPTO_STM32_AES_MAX_KEY_LEN / sizeof(uint32_t)];
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bool in_use;
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};
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#define CRYPTO_STM32_CFG(dev) \
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((const struct crypto_stm32_config *const)(dev)->config)
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#define CRYPTO_STM32_DATA(dev) \
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((struct crypto_stm32_data *const)(dev)->data)
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#define CRYPTO_STM32_SESSN(ctx) \
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((struct crypto_stm32_session *const)(ctx)->drv_sessn_state)
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#endif /* ZEPHYR_DRIVERS_CRYPTO_CRYPTO_STM32_PRIV_H_ */
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