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esp_hw_support: add crypto lock layer for esp32

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This commit is contained in:
harshal.patil 2023-04-11 15:20:41 +05:30
parent 4ae1ea7b9f
commit 56327452ce
4 changed files with 56 additions and 16 deletions
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27
components/esp_hw_support/include/soc/esp32/esp_crypto_lock.h Normal file
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@ -0,0 +1,27 @@
/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Acquire lock for the mpi cryptography peripheral.
*
*/
void esp_crypto_mpi_lock_acquire(void);
/**
* @brief Release lock for the mpi cryptography peripheral.
*
*/
void esp_crypto_mpi_lock_release(void);
#ifdef __cplusplus
}
#endif

1
components/esp_hw_support/port/esp32/CMakeLists.txt
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@ -11,6 +11,7 @@ set(srcs
if(NOT BOOTLOADER_BUILD) if(NOT BOOTLOADER_BUILD)
list(APPEND srcs "cache_sram_mmu.c" list(APPEND srcs "cache_sram_mmu.c"
"esp_crypto_lock.c"
"sar_periph_ctrl.c") "sar_periph_ctrl.c")
endif() endif()

27
components/esp_hw_support/port/esp32/esp_crypto_lock.c Normal file
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@ -0,0 +1,27 @@
/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <sys/lock.h>
#include "esp_crypto_lock.h"
/* Lock overview:
MPI/RSA: independent
*/
/* Lock for the MPI/RSA peripheral */
static _lock_t s_crypto_mpi_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);
}

17
components/mbedtls/port/bignum/bignum_alt.c
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@ -3,28 +3,17 @@
* *
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
*/ */
#include "esp_crypto_lock.h"
#include "esp_private/periph_ctrl.h" #include "esp_private/periph_ctrl.h"
#include "bignum_impl.h" #include "bignum_impl.h"
#include "mbedtls/bignum.h" #include "mbedtls/bignum.h"
#if CONFIG_IDF_TARGET_ESP32
#include <sys/lock.h>
static _lock_t mpi_lock;
#else
#include "esp_crypto_lock.h"
#endif
#include "hal/mpi_hal.h" #include "hal/mpi_hal.h"
void esp_mpi_enable_hardware_hw_op( void ) void esp_mpi_enable_hardware_hw_op( void )
{ {
#if CONFIG_IDF_TARGET_ESP32
/* newlib locks lazy initialize on ESP-IDF */
_lock_acquire(&mpi_lock);
#else
esp_crypto_mpi_lock_acquire(); esp_crypto_mpi_lock_acquire();
#endif
/* Enable RSA hardware */ /* Enable RSA hardware */
periph_module_enable(PERIPH_RSA_MODULE); periph_module_enable(PERIPH_RSA_MODULE);
@ -40,11 +29,7 @@ void esp_mpi_disable_hardware_hw_op( void )
/* Disable RSA hardware */ /* Disable RSA hardware */
periph_module_disable(PERIPH_RSA_MODULE); periph_module_disable(PERIPH_RSA_MODULE);
#if CONFIG_IDF_TARGET_ESP32
_lock_release(&mpi_lock);
#else
esp_crypto_mpi_lock_release(); esp_crypto_mpi_lock_release();
#endif
} }
size_t esp_mpi_hardware_words(size_t words) size_t esp_mpi_hardware_words(size_t words)