It seems that message from Karsten Sperling never made it to debian-arm. * Karsten Sperling <[email protected]> [2020-12-30 13:33]: > Thanks, > > turns out overriding the MTD layout via the kernel command line works. In > case anyone else finds this useful, these are the U-Boot environment > settings I'm using to merge RootFS1 and RootFS2. I'm setting both mtd2 and > mtd3 to be the combined RootFS1+2 (i.e. the two partitions overlap) so that > mtd4 and 5 also keep their numbers / device names and no change is needed > to fw_env.config or flash-kernel. > > bootargs_mtdparts cmdlinepart.mtdparts="physmap-flash.0:512K@7680K > (U-Boot)ro,2M@0(Kernel),5M@2M(RootFS1),5M@2M(RootFS2),128K@7552K(U-Boot > Config),384K@7M(NAS Config)ro" > fsargs setenv bootargs console=ttyS0,115200n8 root=/dev/ram rw > initrd=0x800000,0x500000 $(bootargs_mtdparts) > prefs cp.b 0xff200000 0x800000 0x500000 > > It's probably a good idea to zero out RootFS2 (mtd3) before applying this > as I'm not sure the kernel tolerates trailing garbage in the initrd. > > For some reason the system still doesn't boot up correctly with the stock > 4.19.0-13-marvell kernel though, but I didn't have time to look into why > yet. > > On Mon, 21 Dec 2020 at 22:44, Martin Michlmayr <[email protected]> wrote: > > > * Karsten Sperling <[email protected]> [2020-12-16 12:06]: > > > By pinning lvm to the stretch version I got the initrd to just below 5M, > > so > > > it would fit into a combined RootFS1+RootFS2 partition. It looks like on > > > the u-boot side I would just need to bump the initrd size from 0x3fffff > > > to 0x4fffff in the cp command and the kernel command line, but is there a > > > way to override the partition table the kernel uses? The TS-209 doesn't > > use > > > a device tree. > > > > You'd have to edit arch/arm/mach-orion5x/ts209-setup.c and compile > > your own kernel, but I'm not sure it's worth it. > > > > OTOH, since RootFS2 is right behind RootFS1, you could manually split > > the ramdisk and write the first 4 MB to RootFS1 and the remaining 1 MB > > to RootFS2. This way, you could keep the Debian kernel and just need > > to change u-boot. > > > > -- > > Martin Michlmayr > > https://www.cyrius.com/ > >
-- Martin Michlmayr https://www.cyrius.com/
