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feat(mpi): use RCC atomic block to enable/reset the MPI peripheral

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This commit is contained in:
harshal.patil
2023-09-28 14:14:29 +05:30
parent 3483cf61aa
commit c5cc4f488a
10 changed files with 253 additions and 9 deletions
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31
components/hal/esp32s3/include/hal/mpi_ll.h
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@@ -13,12 +13,43 @@
#include "soc/hwcrypto_periph.h"
#include "soc/dport_reg.h"
#include "soc/mpi_periph.h"
#include "soc/system_struct.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Enable the bus clock for MPI peripheral module
*
* @param enable true to enable the module, false to disable the module
*/
static inline void mpi_ll_enable_bus_clock(bool enable)
{
SYSTEM.perip_clk_en1.crypto_rsa_clk_en = enable;
}
/// use a macro to wrap the function, force the caller to use it in a critical section
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
#define mpi_ll_enable_bus_clock(...) (void)__DECLARE_RCC_ATOMIC_ENV; mpi_ll_enable_bus_clock(__VA_ARGS__)
/**
* @brief Reset the MPI peripheral module
*/
static inline void mpi_ll_reset_register(void)
{
SYSTEM.perip_rst_en1.crypto_rsa_rst = 1;
SYSTEM.perip_rst_en1.crypto_rsa_rst = 0;
// Clear reset on digital signature also, otherwise RSA is held in reset
SYSTEM.perip_rst_en1.crypto_ds_rst = 0;
}
/// use a macro to wrap the function, force the caller to use it in a critical section
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
#define mpi_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; mpi_ll_reset_register(__VA_ARGS__)
static inline size_t mpi_ll_calculate_hardware_words(size_t words)
{
return words;