JH Goldfuss
A description of how Symbian OS operates, manages hardware resources and provides services for application software is incomplete without an explanation of how it takes the hardware from an uninitialized, powered-off state to one in which the system is fully ready for action.
In this chapter I will walk through the boot process for mobile phones that run the operating system from execute-in-place (XIP) Flash memory, such as NOR Flash, and then describe the differences needed to support non-XIP media, such as NAND Flash.
The opposite process, shutdown, also deserves some attention. I will go on to explain how Symbian OS responds to a request to switch off, describing the design of the current Shutdown Server and the forthcoming Domain Manager architectures.
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