2.6.37, NAND mtd/UBI problem

[Gennady Kupava]

Hi, Lars-Peter & list.

В Срд, 05/01/2011 в 20:26 +0100, Lars-Peter Clausen пишет:
> I've just pushed the 2.6.37 trees for the GTA02 to the openmoko git kernel repo[1].

First of all, thanks for your work!

Here i have quite big problem with this kernel -> ubi doesn't want to
work. It even can't mount rootfs (which is UBIfs), because 'UBI is
read-only". It worked well with same options with 2.6.34.

Booted from sd and attempting to mount it manually in following way:

#ubiattach -m 6 -O 2048
UBI device number 0, total 1973 LEBs (250523648 bytes, 238.9 MiB),
available 3 LEBs (380928 bytes, 372.0 KiB), LEB size 126976 bytes (124.0
KiB)

#mount -t ubifs ubi0:om-gta02-rootfs /mnt/flash/ -o
compr=zlib,no_chk_data_crc
mount: block device ubi0:om-gta02-rootfs is write-protected, mounting
read-only

I am getting following kernel errors:

92.660000] UBI: attaching mtd6 to ubi0
[   92.670000] UBI: physical eraseblock size:   131072 bytes (128 KiB)
[   92.680000] UBI: logical eraseblock size:    126976 bytes
[   92.690000] UBI: smallest flash I/O unit:    2048
[   92.700000] UBI: sub-page size:              512
[   92.710000] UBI: VID header offset:          2048 (aligned 2048)
[   92.720000] UBI: data offset:                4096
[   92.770000] uncorrectable error : 
[   92.780000] UBI error: ubi_io_read: error -74 (ECC error) while
reading 64 bytes from PEB 255:0, read 64 bytes
[   92.790000] uncorrectable error : 
[   92.790000] uncorrectable error : 
[   92.800000] UBI error: ubi_io_read: error -74 (ECC error) while
reading 512 bytes from PEB 255:2048, read 512 bytes
[   92.860000] uncorrectable error : 
[   92.860000] UBI error: ubi_io_read: error -74 (ECC error) while
reading 64 bytes from PEB 534:0, read 64 bytes
[   92.870000] uncorrectable error : 
[   92.870000] uncorrectable error : 
[   92.890000] UBI error: ubi_io_read: error -74 (ECC error) while
reading 512 bytes from PEB 534:2048, read 512 bytes
[   93.180000] uncorrectable error : 
[   93.180000] UBI error: ubi_io_read: error -74 (ECC error) while
reading 64 bytes from PEB 1553:0, read 64 bytes
[   93.190000] uncorrectable error : 
[   93.190000] uncorrectable error : 
[   93.200000] UBI error: ubi_io_read: error -74 (ECC error) while
reading 512 bytes from PEB 1553:2048, read 512 bytes
[   93.320000] UBI: max. sequence number:       3382
[   93.370000] UBI: attached mtd6 to ubi0
[   93.380000] UBI: MTD device name:            "rootfs"
[   93.390000] UBI: MTD device size:            246 MiB
[   93.400000] UBI: number of good PEBs:        1973
[   93.410000] UBI: number of bad PEBs:         0
[   93.420000] UBI: number of corrupted PEBs:   0
[   93.430000] UBI: max. allowed volumes:       128
[   93.440000] UBI: wear-leveling threshold:    4096

And so on (see full log in attachment)

Same partition working well with .34 kernel

My /proc/cmdline:
console=tty0 loglevel=8 regular_boot glamo_mci.sd_max_clk=15000000
mem=127M panic=20 root=/dev/mmcblk0p2 rootwait
mtdparts=physmap-flash:-(nor);neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x0f6a0000(rootfs) ro

.config is in attachment. i tried radek's config too - same story.

This is quite grave, as i can't boot or mount nand. From sd it is
working pretty well.

> So it would be good if the patches could get some more testing before.

I'll try to test it as soon as it will be working here.

Best regards,
Gennady
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