LCOV - code coverage report
Current view: top level - home/jason/ncs-2.0.0/modules/hal/nordic/nrfx/mdk - system_nrf53_approtect.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 4 0.0 %
Date: 2022-08-18 11:36:24 Functions: 0 1 0.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            : 
       3                 :            : Copyright (c) 2009-2021 ARM Limited. All rights reserved.
       4                 :            : 
       5                 :            :     SPDX-License-Identifier: Apache-2.0
       6                 :            : 
       7                 :            : Licensed under the Apache License, Version 2.0 (the License); you may
       8                 :            : not use this file except in compliance with the License.
       9                 :            : You may obtain a copy of the License at
      10                 :            : 
      11                 :            :     www.apache.org/licenses/LICENSE-2.0
      12                 :            : 
      13                 :            : Unless required by applicable law or agreed to in writing, software
      14                 :            : distributed under the License is distributed on an AS IS BASIS, WITHOUT
      15                 :            : WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      16                 :            : See the License for the specific language governing permissions and
      17                 :            : limitations under the License.
      18                 :            : 
      19                 :            : NOTICE: This file has been modified by Nordic Semiconductor ASA.
      20                 :            : 
      21                 :            : */
      22                 :            : 
      23                 :            : #ifndef SYSTEM_NRF53_APPROTECT_H
      24                 :            : #define SYSTEM_NRF53_APPROTECT_H
      25                 :            : 
      26                 :            : #include "nrf.h"
      27                 :            : #include "nrf53_erratas.h"
      28                 :            : 
      29                 :            : #ifdef __cplusplus
      30                 :            : extern "C" {
      31                 :            : #endif
      32                 :            : 
      33                 :            : /* Function that handles firmware-driven enabling or disabling of APPROTECT on devices where it is supported.
      34                 :            :         If ENABLE_APPROTECT is defined, the FW will lock the fw branch of the APPROTECT mechanism,
      35                 :            :                             preventing it from being opened.
      36                 :            :         If ENABLE_APPROTECT_USER_HANDLING is defined, the FW will not write to the fw branch of the APPROTECT mechanism.
      37                 :            :                             This allows later stages of the fw to handle APPROTECT,
      38                 :            :                             for example to implement authenticated debug.
      39                 :            :         Otherwise, the fw branch state is loaded from UICR.
      40                 :            : 
      41                 :            :          The same mechanism is implemented for SECURE APPROTECT, with the macros
      42                 :            :          ENABLE_SECURE_APPROTECT and ENABLE_SECURE_APPROTECT_USER_HANDLING. */
      43                 :            : 
      44                 :          0 : static inline void nrf53_handle_approtect(void)
      45                 :            : {
      46                 :            :     #if defined(NRF_APPLICATION)
      47                 :            :         #if defined (ENABLE_APPROTECT)
      48                 :            :             /* Prevent processor from unlocking APPROTECT soft branch after this point. */
      49                 :            :             NRF_CTRLAP_S->APPROTECT.LOCK = CTRLAPPERI_APPROTECT_LOCK_LOCK_Locked;
      50                 :            : 
      51                 :            :         #elif  defined (ENABLE_APPROTECT_USER_HANDLING)
      52                 :            :                 /* Do nothing, allow user code to handle APPROTECT. Use this if you want to enable authenticated debug. */
      53                 :            : 
      54                 :            :         #else
      55                 :            :             /* Load APPROTECT soft branch from UICR.
      56                 :            :                If UICR->APPROTECT is disabled, CTRLAP->APPROTECT will be disabled. */
      57                 :          0 :             NRF_CTRLAP_S->APPROTECT.DISABLE = NRF_UICR_S->APPROTECT;
      58                 :            :         #endif
      59                 :            : 
      60                 :            :         /* Secure APPROTECT is only available for Application core. */
      61                 :            :         #if defined (ENABLE_SECURE_APPROTECT)
      62                 :            :             /* Prevent processor from unlocking SECURE APPROTECT soft branch after this point. */
      63                 :            :             NRF_CTRLAP_S->SECUREAPPROTECT.LOCK = CTRLAPPERI_SECUREAPPROTECT_LOCK_LOCK_Locked;
      64                 :            : 
      65                 :            :         #elif  defined (ENABLE_SECURE_APPROTECT_USER_HANDLING)
      66                 :            :                 /* Do nothing, allow user code to handle SECURE APPROTECT. Use this if you want to enable authenticated debug. */
      67                 :            : 
      68                 :            :         #else
      69                 :            :             /* Load SECURE APPROTECT soft branch from UICR.
      70                 :            :                If UICR->SECUREAPPROTECT is disabled, CTRLAP->SECUREAPPROTECT will be disabled. */
      71                 :          0 :             NRF_CTRLAP_S->SECUREAPPROTECT.DISABLE = NRF_UICR_S->SECUREAPPROTECT;
      72                 :            :         #endif
      73                 :            :     #endif
      74                 :            :     #if defined(NRF_NETWORK)
      75                 :            :         #if defined (ENABLE_APPROTECT)
      76                 :            :             /* Prevent processor from unlocking APPROTECT soft branch after this point. */
      77                 :            :             NRF_CTRLAP_NS->APPROTECT.LOCK = CTRLAPPERI_APPROTECT_LOCK_LOCK_Locked;
      78                 :            : 
      79                 :            :         #elif  defined (ENABLE_APPROTECT_USER_HANDLING)
      80                 :            :                 /* Do nothing, allow user code to handle APPROTECT. Use this if you want to enable authenticated debug. */
      81                 :            : 
      82                 :            :         #else
      83                 :            :             /* Load APPROTECT soft branch from UICR.
      84                 :            :                If UICR->APPROTECT is disabled, CTRLAP->APPROTECT will be disabled. */
      85                 :            :             NRF_CTRLAP_NS->APPROTECT.DISABLE = NRF_UICR_NS->APPROTECT;
      86                 :            :         #endif
      87                 :            :     #endif
      88                 :          0 : }
      89                 :            : 
      90                 :            : #ifdef __cplusplus
      91                 :            : }
      92                 :            : #endif
      93                 :            : 
      94                 :            : #endif /* SYSTEM_NRF5_APPROTECT_H */

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