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feat(hmac): use RCC atomic block to enable/reset the HMAC peripheral

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This commit is contained in:
harshal.patil
2023-10-11 14:59:04 +05:30
parent 1c6ff8ce9f
commit 18b93e9564
10 changed files with 181 additions and 10 deletions
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components/esp_hw_support/esp_hmac.c
+12 -3
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -13,11 +13,13 @@
#include "esp_hmac.h"
#include "esp_log.h"
#include "esp_crypto_lock.h"
#include "esp_private/esp_crypto_lock_internal.h"
#include "soc/hwcrypto_reg.h"
#include "soc/system_reg.h"
#if !CONFIG_IDF_TARGET_ESP32S2
#include "hal/hmac_hal.h"
#include "hal/hmac_ll.h"
#include "esp_private/periph_ctrl.h"
#endif
@@ -67,7 +69,11 @@ esp_err_t esp_hmac_calculate(hmac_key_id_t key_id,
esp_crypto_hmac_lock_acquire();
// We also enable SHA and DS here. SHA is used by HMAC, DS will otherwise hold SHA in reset state.
periph_module_enable(PERIPH_HMAC_MODULE);
HMAC_RCC_ATOMIC() {
hmac_ll_enable_bus_clock(true);
hmac_ll_reset_register();
}
periph_module_enable(PERIPH_SHA_MODULE);
periph_module_enable(PERIPH_DS_MODULE);
@@ -133,7 +139,10 @@ esp_err_t esp_hmac_calculate(hmac_key_id_t key_id,
periph_module_disable(PERIPH_DS_MODULE);
periph_module_disable(PERIPH_SHA_MODULE);
periph_module_disable(PERIPH_HMAC_MODULE);
HMAC_RCC_ATOMIC() {
hmac_ll_enable_bus_clock(false);
}
esp_crypto_hmac_lock_release();