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
and an modprobe says
xxx: disagrees about version of symbol module_layout
modprobe: ERROR: could not insert 'xxx': Exec format error
In the bbappend I APPEND the new config filepath and add the cfg file to
SRC_URI...and it seemingly finds the config file just fine.
# -----------------------------------------------------------
FILESEXTRAPATHS_append := "${THISDIR}/cfg:"
SRC_URI += "file://rootnfs.cfg"
#SRC_URI += "file://debug.cfg"
#SRC_URI += "file://networking.cfg"
The fragment itself just allows for IP autoconfig, enables NFS
filesystem (in kernel, not modules), and brings in the DNS resolver.
# -------------------------------------------------------
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_DNS_RESOLVER=y
CONFIG_NFS_FS=y
CONFIG_NFS_V2=y
CONFIG_NFS_V3=y
CONFIG_NFS_V4=y
CONFIG_PNFS_FILE_LAYOUT=y
CONFIG_ROOT_NFS=y
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
Where in the process would the kernel modules and the kernel be getting
out of sync when I make a change? Even forced modules loading fails.
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