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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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34
components/hal/esp32s2/include/hal/mpi_ll.h
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@@ -19,6 +19,40 @@ 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)
{
if (enable) {
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN1_REG, DPORT_CRYPTO_RSA_CLK_EN);
} else {
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN1_REG, DPORT_CRYPTO_RSA_CLK_EN);
}
}
/// 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)
{
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN1_REG, DPORT_CRYPTO_RSA_RST);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN1_REG, DPORT_CRYPTO_RSA_RST);
// Clear reset on digital signature also, otherwise RSA is held in reset
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN1_REG, DPORT_CRYPTO_DS_RST);
}
/// 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;