> > Correct me if I'm wrong but I thought all the data beyond IMAGE_SIZE > > remain intact by OpenWrt on firstboot. Experimenting with Archer C7 v1 > > recently I was able to flash OpenWrt image (ar71xx) and after reflashing > > tplink fw previous settings were still valid indicating config partition > > hasn't > > been overwritten. > > At least TL-MR22U has config partition of 64KB and Archer C7 has 128KB > > - I've gone through GPL sources of Archer and it seems between two > > firmware versions this partition was increased from 64 to 128KB, actually I > > discovered this by hexdiff-ing u-boot versions from each firmware version > Nevertheless, addressing this with IMAGE_SIZE would still be just a hack. > If there is config data to be preserved, one should add a partition for it. > Then IMAGE_SIZE would just shrink according to the (then correct) firmware > partition. Now that we have DTS files with individual partition > schemes, > this would be even easier than for ar71xx. > Best > Adrian
To put this in a more positive frame: If you think that there is a config partition on C7v1 or other devices and you know where it is, please send a patch adding it as read-only partition in DTS. Best Adrian
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