dave_user
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The iMX93x SoC uses some GPIOs to read the boot configuration set on the SOM: for this reason the SOM's ports UART1_TXD, UART2_TXD, SAI1_TXFS and SAI1_TXD0 are floating (high impedance) while CPU_PORn signal is low.
[[File:AURA-boot-opt.png | 800px]]
+TBD
no edit summary
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, that is the Cortex-A55 ROM loads all containers and images. See iMX93x refeerence manual for more details.
If primary boot fail '''TBD'''
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=== Note on boot signals: ===* BOOT_MODE_SEL is latched when processor reset is released.* The iMX93x SoC uses some GPIOs to read the boot configuration set on the SOM: for this reason the SOM's ports UART1_TXD, UART2_TXD, SAI1_TXFS and SAI1_TXD0 are floating (high impedance) while CPU_PORn signal is low.[[File:AURA-boot-opt.png | 800px]]
'''TBD'''
in case no valid image is found in XXXXX, boot ROM shall enable USB serial download mode automatically
===Important note for ''manufacture mode'' management===
