AXEL ULite SOM/AXEL ULite Hardware/Power and Reset/Boot process and bootstrap configuration
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Introduction[edit | edit source]
NXP iMX6UL processor implements a very flexible boot process. This versatility comes at the price of a non trivial bootstrap configuration scheme. Typical system-on-module (SOM for short) adopter does not want/need to deal with such complexity. In other words he/she expects to manage few - virtually none! - boot configuration issues because it is assumed they are handled by the SOM itself. Nevertheless, there are specific applications where the system integrator needs full control of all the bootstrap configuration options, even if the design is built upon a SOM.
These two needs - ease of use and configurability - clearly push in opposite directions. During the conception of the product AXELULite, specific attention has been addressed to find a viable trade off to satisfy such requirements. This effort has led to the options that are detailed in the section
On the other hand, if a very conservative approach would have been adopted for the
