14 lines
612 B
ReStructuredText
14 lines
612 B
ReStructuredText
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The diagram of boot sequence
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============================
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The premise of this sequence diagram is NuttX12.4.0, cxd56xx, non-SMP and Flat build.
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The beginning of boot sequence is __start().
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__start() will call nx_start(). nx_start() will initialize the kernel and call nsh_main().
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nsh_main() will execute NuttShell(NSH).
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nx_start() is NuttX standard function, but the behavior depends on some kernel configurations.
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For example, the calling nsh_main() is also configurable.
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About related kernel configurations, see :doc:`/guides/port_relatedkernelconfigrations`.
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.. image:: image/port_bootsequence-12.4.0.png
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