https://community.nxp.com/t5/S32K/S32K146-Csec/m-p/1693830#M25493 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/204726">@Kris_chao</a> <BR />to destroy the partition (to reset the device back to factory state), it is necessary to run CMD_DBG_CHAL and CMD_DBG_AUTH commands with knowledge of MASTER_ECU_KEY. <BR />If you use software from AN5401, you can run 5_Resetting_flash_to_the_factory_state project. If you modified default MASTER_ECU_KEY, you need to update the key in DBG_AUTH function in CSEc_functions.c file.</P> <P>If you use SDK code, you can run this project:<BR />c:\NXP\S32DS.3.4\S32DS\software\S32SDK_S32K1XX_RTM_4.0.3\examples\S32K146\driver_examples\system\csec_keyconfig\<BR />Just change this definition from:<BR />#define ERASE_ALL_KEYS 0<BR />to <BR />#define ERASE_ALL_KEYS 1<BR />And again, if you changed the MASTER_ECU_KEY, make sure it is updated in file csec_utils.c accordingly (g_authIdKey).</P> <P>And if you want to update BOOT_MAC without destroying the partition, it is possible to - you can update it using standard key update protocol. It's described in section "4.4.4.2 Scenario 2: One or more keys is write protected and all user<BR />keys cannot be erased. (or not all user keys are known)" in AN5401.<BR />Regards,<BR />Lukas</P> Thu, 27 Jul 2023 06:03:30 GMT lukaszadrapa 2023-07-27T06:03:30Z https://community.nxp.com/t5/S32K/S32K146-Csec/m-p/1692966#M25454 <P>各位大佬，想问一下这个S32K的Csec模块，我在反刷了Boot后需要更新BOOT_MAC值，但又不能重置Flexram和Flexnvm区域，有什么好的办法？</P> Wed, 26 Jul 2023 09:56:39 GMT https://community.nxp.com/t5/S32K/S32K146-Csec/m-p/1692966#M25454 Kris_chao 2023-07-26T09:56:39Z https://community.nxp.com/t5/S32K/S32K146-Csec/m-p/1693830#M25493 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/204726">@Kris_chao</a> <BR />to destroy the partition (to reset the device back to factory state), it is necessary to run CMD_DBG_CHAL and CMD_DBG_AUTH commands with knowledge of MASTER_ECU_KEY. <BR />If you use software from AN5401, you can run 5_Resetting_flash_to_the_factory_state project. If you modified default MASTER_ECU_KEY, you need to update the key in DBG_AUTH function in CSEc_functions.c file.</P> <P>If you use SDK code, you can run this project:<BR />c:\NXP\S32DS.3.4\S32DS\software\S32SDK_S32K1XX_RTM_4.0.3\examples\S32K146\driver_examples\system\csec_keyconfig\<BR />Just change this definition from:<BR />#define ERASE_ALL_KEYS 0<BR />to <BR />#define ERASE_ALL_KEYS 1<BR />And again, if you changed the MASTER_ECU_KEY, make sure it is updated in file csec_utils.c accordingly (g_authIdKey).</P> <P>And if you want to update BOOT_MAC without destroying the partition, it is possible to - you can update it using standard key update protocol. It's described in section "4.4.4.2 Scenario 2: One or more keys is write protected and all user<BR />keys cannot be erased. (or not all user keys are known)" in AN5401.<BR />Regards,<BR />Lukas</P> Thu, 27 Jul 2023 06:03:30 GMT https://community.nxp.com/t5/S32K/S32K146-Csec/m-p/1693830#M25493 lukaszadrapa 2023-07-27T06:03:30Z