Hey,
I'm a bit clueless about using bootchooser/state (together with rauc) on
raspberry pi.
Inside barebox itself, everything works fine. I defined a state backend
inside the dt, and I can set/update/read values:
state: state {
magic = <0x4d433230>;
compatible = "barebox,state";
backend-type = "raw";
backend = <&backend_state_sd>;
backend-storage-type = "circular";
backend-stridesize = <0x800>;
[...]
};
&sdhci { // extended the original entry
pinctrl-0 = <&emmc_gpio48>;
no-sd;
non-removable;
status = "okay";
partitions {
compatible = "fixed-partitions";
#size-cells = <1>;
#address-cells = <1>;
backend_state_sd: part@200000 {
label = "state_sd";
reg = <0x200000 0x200000>;
};
};
};
Linux uses &sdhost, barebox switched to &sdhci in
ed5d970c16d14aa24edc20b8a096f230a398f7be as it has no driver for the
sdhost interface. barebox-state doesn't find the storage, as expected:
# barebox-state
of_get_devicepath: cannot find device from node /soc/mmc@7e300000
state: state failed to parse path to backend: No such device
unable to initialize state: Unknown error -19
I would need some way to switch the backend for the state variable to
the sdhost interface when it is copied into the device tree used for
booting - or any other good proposal how to deal with the problem.
Best regards
Moritz
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