[U-Boot] Internal Boot mode

[U-Boot] Internal Boot mode

[JYOTI DUBEY]

Can anybody tell what all happens inside an i.mx6 board when we try to boot
it in internal mode? Is it that in internal mode the board does not look
into the flash at all to discover the u-boot image and the image must be
provided only from the serial port? If yes then what steps should be
followed to perform internal booting? It would be of great help if commands
for performing internal booting is provided.

Thanks in Advance!

[U-Boot] Internal Boot mode

[Stefano Babic]

Hi Jyoti,

On 04/02/2014 10:07, JYOTI DUBEY wrote:
> Can anybody tell what all happens inside an i.mx6 board when we try to boot
> it in internal mode?

You have already got several answers pointing to the provided
documentation. Please read it. The boot process is descripted with
details in Chapter 8 of the i.MX6 User Manual. There is no short way,
you have to read it accurately.

> Is it that in internal mode the board does not look
> into the flash at all to discover the u-boot image and the image must be
> provided only from the serial port?

No, it is not. Internal mode is very similar to eFuse mode with the
exception that in internal mode the setup can be overwritten by GPIO.
Supported boards in U-Boot are booting in internal mode loading the
U-boot image from a storage (SPI, SD, NAND).

> If yes then what steps should be
> followed to perform internal booting? It would be of great help if commands
> for performing internal booting is provided.

Please read the documentation.

Best regards,
Stefano Babic

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