Am 07.07.2015 11:19, schrieb Hans de Goede:
We could agree upon a special magic signature between the fel tool
and the sunxi u-boot code which means that u-boot should patch
its boot_cmd in the env to load a script from DRAM (at a fixed
offset). We could always do the boot_cmd patching when in fel-mode
(which we already detect) but I do not believe this is desirable.
Until now I've use a simple (and somewhat crude) workaround for this,
i.e. to achieve a more flexible FEL boot sequence.
I defined a different bootcmd for u-boot to check for the presence of
a script file (uploaded via fel):
#define CONFIG_BOOTCOMMAND "source ${scriptaddr} || run distro_bootcmd"
A "normal" boot is expected to have invalid data at ${scriptaddr},
so the source command would fail (due to checksum mismatch).
But if a FEL-provided script is present, it will be executed before
anything else.
Regards, B. Nortmann
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