On 2020-08-03 14:30, Rob Prowel wrote:
More hassle dealing with vendor supplied yocto distro.
In the original "sumo" yocto release that the vendor sent us I could
easily change their static flash image to a rootnfs image and tftpboot
the kernel, bitstream, and DTB, and use nfs as a root filesystem. This
works great for development and not having to constantly go thru the
slow flash update process.
Problem is that their updated release (also sumo) breaks any time I
introduce a new kernel fragment like turning on rootnfs. The resulting
image will boot but all attempts to modprobe or insmod any modules
result in the error
[ 8.237421] xxx_dev: disagrees about version of symbol module_layout
Make a note!
Always double check the name and version of the kernel you are booting
against the one you THINK you are loading. This becomes particularly
easy to screw up when doing nfs or tftp boots.
Problem was of my own doing:
concatenating a lengthy u-boot string I used ${name} instead of
${hostname} so the wrong kernel was being tftp loaded...and I didn't
catch this for a week!
problem solved!
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