[FS#4137] OpenWRT 21.02.1 doesn't completely boot on RaidSonic IB-NAS4220-B
openwrt-bugs at lists.openwrt.org
Tue Nov 23 12:52:03 PST 2021
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FS#4137 - OpenWRT 21.02.1 doesn't completely boot on RaidSonic IB-NAS4220-B
User who did this - Christian Lamparter (chunkeey)
the provided flashdump has something that resembles a partition table right at 0xfe0000.
and from your post:
> root at OpenWrt:/# cat /sys/class/mtd/mtd0/erasesize
This means that your flash chip reports a 128KiB erasesize (and not the assumed 32 KiB)
if you could patch that 0x1fc value in the device-tree [[https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch/arm/boot/dts/gemini-nas4220b.dts?h=linux-5.10.y#n87|gemini-nas4220b.dts]]
to (0xfe0000 / 131072) = 127 = 0x7f. Then everything should fall into place and everything "should" work.
There's something to watch out though: manufacturers sometimes have to switch to a different flash chip. I looked around if I could find any mentions of what other flash chips are used.
I looked around and found a review which had [[https://bit-tech.net/reviews/tech/storage/icy-box-ib-nas4220-b-network-storage/2/|PCB shots]]. Their sample had a S29GL128N(11TFI01 - somewhat unreadable). This is a Spanion Parallel NOR MirrorBit™ Flash chip. The Spanion datasheet says "S29GL128N: One hundred twenty-eight 64 Kword (128 Kbyte) sectors".
(It seems the "kernel" is called "kern" instead. Still, I don't think this is an issue
since it seems that the gemini's sysupgrade platform.sh only supports the DIR-685)
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