RAM 6.0 BUX II Series Guía de usuario Pagina 18

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VxWorks
BSP Developer’s Guide, 6.0
10
Figure 2-2 illustrates the boot sequence used when VxWorks is booted from a boot
ROM.
Figure 2-2 Boot Sequence Using a Boot ROM
romInit
romInit.s
ROM-based image
romStart
bootLoad
usrInit
bootCmdLoop
go
Copies ROM image to RAM
Clears unused RAM
Decompression (if required)
provided in target/config/all/bootInit.c
provided in
target/config/all/bootConfig.c
Performs minimal kernel initialization
Initializes CPU
Initializes RAM (controller)
Initializes Stack - Quiets CPU (disable interrupts)
autoBoot
bootLoad
go
tBootTask entry point
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