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→Options for AXELULite users
From the point of view of boot configuration programming, AXELULite portfolio consists of two basic categories of ordering codes:
#part numbers in the form TBD have eFUSEs not programmed
#the other ordering codes have eFUSE programmed as detailed in the following tablesection.
For convenience, the products belonging to the first category will be denoted as ''NP-eFUSE''. The others will be referred as ''P-eFUSE''.
*<code>SDMMC_MFG_DISABLE</code> set to 0: ''manufacture mode'' is '''enabled'''
*<code>BT_FUSE_SEL</code> is set to 1, meaning that that eFUSEs have been programmed
*<code>FORCE_INTERNAL_BOOT</code> is set to 0, in order to let <code>BOOT_MODE</code> pins to select main boot mode.*TBD lasciare attivo <code>SEC_CONFIG[1:0]</code> are set to 01 to allow any program image, even if authentication fails ('''this opption is intended for non-secure products''')*<code>eFuse 0x470[4]</code> is set to 1, to disable UART serial downloader sulle UARTs ???download.
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P-eFUSE products yet provides a moderated freedom in terms of configurability and openness. Generally speaking, this may affect system security negatively. '''Hence it is strongly recommended that system integrator does a detailed assessment in case he/she is considering the use of P-eFUSE SOMs, especially if security concerns are relevant'''.
===NP-eFUSE ordering codes===Users who need to have the '''full control''' of the boot process should choose one of the NP-eFUSE part numbers. This allows them to be able to*program eFUSEs by themselves*implement circuitry at carrier board level to exploit ''GPIO override''*decide to use ''GPIO override'' approach even for mass production. ====AXELULite adapter====
To ease the development effort of the customers working with NP-eFUSE SOMs, DAVE Embedded Systems has made available a specific adapter board. For more information please see [[AXELULite adapter|this page]].
==References==
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