1 /**
2   ******************************************************************************
3   * @file    stm32wlxx_ll_pka.c
4   * @author  MCD Application Team
5   * @brief   PKA LL module driver.
6   ******************************************************************************
7   * @attention
8   *
9   * Copyright (c) 2020 STMicroelectronics.
10   * All rights reserved.
11   *
12   * This software is licensed under terms that can be found in the LICENSE file
13   * in the root directory of this software component.
14   * If no LICENSE file comes with this software, it is provided AS-IS.
15   *
16   ******************************************************************************
17   */
18 #if defined(USE_FULL_LL_DRIVER)
19 
20 /* Includes ------------------------------------------------------------------*/
21 #include "stm32wlxx_ll_pka.h"
22 #include "stm32wlxx_ll_bus.h"
23 
24 #ifdef  USE_FULL_ASSERT
25 #include "stm32_assert.h"
26 #else
27 #define assert_param(expr) ((void)0U)
28 #endif /* USE_FULL_ASSERT */
29 
30 /** @addtogroup STM32WLxx_LL_Driver
31   * @{
32   */
33 
34 #if defined(PKA)
35 
36 /** @addtogroup PKA_LL
37   * @{
38   */
39 
40 /* Private types -------------------------------------------------------------*/
41 /* Private variables ---------------------------------------------------------*/
42 /* Private constants ---------------------------------------------------------*/
43 /* Private macros ------------------------------------------------------------*/
44 /** @defgroup PKA_LL_Private_Macros PKA Private Constants
45   * @{
46   */
47 #define IS_LL_PKA_MODE(__VALUE__)     (((__VALUE__) == LL_PKA_MODE_MONTGOMERY_PARAM_MOD_EXP) ||\
48                                        ((__VALUE__) == LL_PKA_MODE_MONTGOMERY_PARAM)          ||\
49                                        ((__VALUE__) == LL_PKA_MODE_MODULAR_EXP)               ||\
50                                        ((__VALUE__) == LL_PKA_MODE_MONTGOMERY_PARAM_ECC)      ||\
51                                        ((__VALUE__) == LL_PKA_MODE_ECC_KP_PRIMITIVE)          ||\
52                                        ((__VALUE__) == LL_PKA_MODE_ECDSA_SIGNATURE)           ||\
53                                        ((__VALUE__) == LL_PKA_MODE_ECDSA_VERIFICATION)        ||\
54                                        ((__VALUE__) == LL_PKA_MODE_POINT_CHECK)               ||\
55                                        ((__VALUE__) == LL_PKA_MODE_RSA_CRT_EXP)               ||\
56                                        ((__VALUE__) == LL_PKA_MODE_MODULAR_INV)               ||\
57                                        ((__VALUE__) == LL_PKA_MODE_ARITHMETIC_ADD)            ||\
58                                        ((__VALUE__) == LL_PKA_MODE_ARITHMETIC_SUB)            ||\
59                                        ((__VALUE__) == LL_PKA_MODE_ARITHMETIC_MUL)            ||\
60                                        ((__VALUE__) == LL_PKA_MODE_COMPARISON)                ||\
61                                        ((__VALUE__) == LL_PKA_MODE_MODULAR_REDUC)             ||\
62                                        ((__VALUE__) == LL_PKA_MODE_MODULAR_ADD)               ||\
63                                        ((__VALUE__) == LL_PKA_MODE_MODULAR_SUB)               ||\
64                                        ((__VALUE__) == LL_PKA_MODE_MONTGOMERY_MUL))
65 /**
66   * @}
67   */
68 
69 /* Private function prototypes -----------------------------------------------*/
70 
71 /* Exported functions --------------------------------------------------------*/
72 /** @addtogroup PKA_LL_Exported_Functions
73   * @{
74   */
75 
76 /** @addtogroup PKA_LL_EF_Init
77   * @{
78   */
79 
80 /**
81   * @brief  De-initialize PKA registers (Registers restored to their default values).
82   * @param  PKAx PKA Instance.
83   * @retval ErrorStatus
84   *          - SUCCESS: PKA registers are de-initialized
85   *          - ERROR: PKA registers are not de-initialized
86   */
LL_PKA_DeInit(PKA_TypeDef * PKAx)87 ErrorStatus LL_PKA_DeInit(PKA_TypeDef *PKAx)
88 {
89   ErrorStatus status = SUCCESS;
90 
91   /* Check the parameters */
92   assert_param(IS_PKA_ALL_INSTANCE(PKAx));
93 
94   if (PKAx == PKA)
95   {
96     /* Force PKA reset */
97     LL_AHB3_GRP1_ForceReset(LL_AHB3_GRP1_PERIPH_PKA);
98 
99     /* Release PKA reset */
100     LL_AHB3_GRP1_ReleaseReset(LL_AHB3_GRP1_PERIPH_PKA);
101   }
102   else
103   {
104     status = ERROR;
105   }
106 
107   return (status);
108 }
109 
110 /**
111   * @brief  Initialize PKA registers according to the specified parameters in PKA_InitStruct.
112   * @param  PKAx PKA Instance.
113   * @param  PKA_InitStruct pointer to a @ref LL_PKA_InitTypeDef structure
114   *         that contains the configuration information for the specified PKA peripheral.
115   * @retval ErrorStatus
116   *          - SUCCESS: PKA registers are initialized according to PKA_InitStruct content
117   *          - ERROR:   Not applicable
118   */
LL_PKA_Init(PKA_TypeDef * PKAx,LL_PKA_InitTypeDef * PKA_InitStruct)119 ErrorStatus LL_PKA_Init(PKA_TypeDef *PKAx, LL_PKA_InitTypeDef *PKA_InitStruct)
120 {
121   assert_param(IS_PKA_ALL_INSTANCE(PKAx));
122   assert_param(IS_LL_PKA_MODE(PKA_InitStruct->Mode));
123 
124   LL_PKA_Config(PKAx, PKA_InitStruct->Mode);
125 
126   return (SUCCESS);
127 }
128 
129 /**
130   * @brief Set each @ref LL_PKA_InitTypeDef field to default value.
131   * @param PKA_InitStruct pointer to a @ref LL_PKA_InitTypeDef structure
132   *                       whose fields will be set to default values.
133   * @retval None
134   */
135 
LL_PKA_StructInit(LL_PKA_InitTypeDef * PKA_InitStruct)136 void LL_PKA_StructInit(LL_PKA_InitTypeDef *PKA_InitStruct)
137 {
138   /* Reset PKA init structure parameters values */
139   PKA_InitStruct->Mode       = LL_PKA_MODE_MONTGOMERY_PARAM_MOD_EXP;
140 }
141 
142 /**
143   * @}
144   */
145 
146 /**
147   * @}
148   */
149 
150 /**
151   * @}
152   */
153 
154 #endif /* defined (PKA) */
155 
156 /**
157   * @}
158   */
159 
160 #endif /* USE_FULL_LL_DRIVER */
161