NOR damage problem

[Alexander Shiyan]

Hello All!

Found NOR partition damage after use ubiformat.
There is a NOR memory (256M) connected via atmel-qspi.
First partition is RAW, the other for use via UBI.

partition at 0 {
label = "bootstrap";
reg = <0 0x20000>;
};
...
partition at e0000 {
label = "system";
reg = <0xe0000 0>;
};

barebox at Mega-Milas Informer SAMA5D2:/ md -s /dev/m25p0.bootstrap
m25p80 flash at 00: from 0x00000000, len 256
00000000: ea000012 eafffffe eafffffe eafffffe                ................
00000010: eafffffe 00004144 eafffffe eafffffe                ....DA..........
00000020: 65726162 00786f62 00000000 000040b8                barebox...... at ..
00000030: 55555555 55555555 55555555 55555555                UUUUUUUUUUUUUUUU
00000040: 55555555 55555555 55555555 55555555                UUUUUUUUUUUUUUUU
00000050: eb000c4b e1a00004 eb0008ca e1a0200e                K............ ..
00000060: e1a0300d eb000c8d e10fc000 e22cc01a                .0............,.
00000070: e31c001f e3ccc01f e38cc0d3 1a000004                ................
00000080: e38ccc01 e28fe00c e16ff00c e12ef30e                ..........o.....
00000090: e160006e e121f00c ee07cf15 ee07cf9a                n.`...!.........
000000a0: ee07cf95 ee11cf10 e3ccc085 e3cccc23                ............#...
000000b0: e38cca01 e38cc501 e3ccc002 ee01cf10                ................
000000c0: e1a0d003 e1a0f002 ee11cf30 e38cc040                ........0... at ...
000000d0: ee01cf30 e1a0f00e e24f0008 e59f1004                0.........O.....
000000e0: e0500001 e12fff1e 000000d8 e3510000                ..P.../.......Q.
000000f0: 13a03000 15813000 e5d021ff e5d031fe                .0...0...!...1..

So, at this time all OK. Next, format with UBI.

barebox at Mega-Milas Informer SAMA5D2:/ ubiformat /dev/m25p0.system -y
ubiformat: m25p0.system (nor), size 267517952 bytes (255.1 MiB),
4082 eraseblocks of 65536 bytes (64 KiB), min. I/O size 1 bytes
^Mlibscan: scanning eraseblock 0 --  0 % complete
m25p80 flash at 00: from 0x000e0000, len 64
m25p80 flash at 00: from 0x000f0000, len 64
...
m25p80 flash at 00: from 0x0ffe0000, len 64
libscan: scanning eraseblock 4081 -- 100 % complete
m25p80 flash at 00: from 0x0fff0000, len 64

ubiformat: 7 eraseblocks have valid erase counter, mean value is 0
ubiformat: 4069 eraseblocks are supposedly empty
ubiformat: warning!: 6 of 4082 eraseblocks contain non-ubifs data
ubiformat: warning!: only 7 of 4082 eraseblocks have valid erase counter
ubiformat: erase counter 0 will be used for all eraseblocks
ubiformat: note, arbitrary erase counter value may be specified using -e option
ubiformat: use erase counter 0 for all eraseblocks
ubiformat: formatting eraseblock 0 --  0 % complete
m25p80 flash at 00: at 0xe0000, len 65536
m25p80 flash at 00: at 0xf0000, len 65536
m25p80 flash at 00: at 0x100000, len 65536
m25p80 flash at 00: to 0x00100000, len 64
...
m25p80 flash at 00: to 0x000f0000, len 65536

Then check first partition:
barebox at Mega-Milas Informer SAMA5D2:/ md -s /dev/m25p0.bootstrap
m25p80 flash at 00: from 0x00000000, len 256
00000000: 22000010 00000000 00000000 00000000                ..."............
00000010: 40000000 00000000 60dc9950 00000000                ... at ....P..`....
00000020: 00000000 00000000 00000000 00000000                ................
00000030: 00000000 00000000 00000000 50040051                ............Q..P
00000040: 55555555 55555555 55555555 55555555                UUUUUUUUUUUUUUUU
00000050: eb000c4b e1a00004 eb0008ca e1a0200e                K............ ..
00000060: e1a0300d eb000c8d e10fc000 e22cc01a                .0............,.
00000070: e31c001f e3ccc01f e38cc0d3 1a000004                ................
00000080: e38ccc01 e28fe00c e16ff00c e12ef30e                ..........o.....
00000090: e160006e e121f00c ee07cf15 ee07cf9a                n.`...!.........
000000a0: ee07cf95 ee11cf10 e3ccc085 e3cccc23                ............#...
000000b0: e38cca01 e38cc501 e3ccc002 ee01cf10                ................
000000c0: e1a0d003 e1a0f002 ee11cf30 e38cc040                ........0... at ...
000000d0: ee01cf30 e1a0f00e e24f0008 e59f1004                0.........O.....
000000e0: e0500001 e12fff1e 000000d8 e3510000                ..P.../.......Q.
000000f0: 13a03000 15813000 e5d021ff e5d031fe                .0...0...!...1..
barebox at Mega-Milas Informer SAMA5D2:/

Now the first partition is broken.

Any suggestions where to look for the bug?

Thanks!