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* reads the OTP settings
→System boot
* determines whether the boot is secure or non-secure
* performs some initialization of the system and clean-ups
* reads the mode pins to determine the primary boot device
* once it is satisfied, it executes the boot code
=== Boot options ===
The default primary boot device is defined at the factory and identified by the 'Boot Mode ' fileld of the ordering code as follows:
* 0: SPI NOR / SD option (SOM code: DAUxxx0xxxxR)
* 1: eMMC / SD option (SOM code: DAUxxx1xxxxR)
For both options an alternative primary boot from SD/MMC card is provided, selectable by driving low the BOOT_MODE_SEL signal. Bootable SD/MMC card connects via the SD2 (USDHC2) bus.
All boot modes provide 'single boot' mode, meaning that is the Cortex-A55 ROM loads all containers and imagesis the first core to boot. See iMX93x refeerence manual for more details.
If primary boot fail '''TBD'''
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Other options are available on-demand, however. DAVE Embedded Systems' team is available for additional information on this matter. If necessary, please contact [[Mailto:sales@dave.eu|sales@dave.eu]].
=== Note on boot signals: ===
