Booting large images on iMX.8-evk board

[Stefan Kalkowski]

Hi Chris,

thank you for sharing this. Your contribution is very much welcome!

Best regards
Stefan

On Fri, Mar 06, 2020 at 12:44:15PM +0100, Chris Hofer wrote:
> Hi everyone,
> 
> I recently wanted to test the Armv8 virtualization introduced in the 19.11
> release on hardware. I ran into a limitation of the preinstalled u-boot on
> the i.MX8-evk board.
> 
> After I loaded the uImage to a reasonable address (e.g. 0x60000000), I
> executed it with bootm 0x60000000. However, the preinstalled u-boot refused
> to execute it, since a config-parameter (CONFIG_SYS_BOOTM_LEN) limits the
> max. size of a bootable image and mine was too large.
> 
> Stefan confirmed this issue and pointed me to position [1] in the release
> notes 20.02; it shows how to build a modified u-boot version without this
> (and other) limitation(s) and flash it to an SD card. Once u-boot is on the
> card, one may have to change the default boot-mode of the board from
> internal flash to SD card, by changing the boot mode pads on the board
> according to [2].
> 
> I just wanted to share this with you, in case you run into the same issue.
> 
> 
> Best,
> 
> Chris Hofer
> 
> 
> [1] https://genode.org/documentation/release-notes/20.02#USB_and_Input
> 
> [2] https://community.nxp.com/docs/DOC-343178
> 
> 
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-- 
Stefan Kalkowski
Genode labs

https://github.com/skalk | https://genode.org