community Digest, Vol 221, Issue 9

[Gennady Kupava]

В Птн, 04/02/2011 в 16:18 +0100, giacomo 'giotti' mariani пишет:
> On 02/04/2011 16:08, community-request at lists.openmoko.org wrote:
> >> >  Hi
> >> >  
> >> >  Just flashed qtmoko v31 in NAND.
> >> >  It hangs on first boot with kernel panic:
> >> >  
> >> >  UBIFS error (pid 1): mount_ubifs: 'compressor "lzo" is not compiled in
> >> >  Kernel-panic - not syncing: VFS: Unable to mount root fs on
> >> >  onknown-block(0,0)
> >> >  
> >> >  Usind qtmoko kernel&  qi:
> >> >  
> >> >  
> >> >  -rw-r--r--  1 user group 29088 feb  4 12:59 qi-31.udfu
> >> >  -rw-r--r--  1 user group 93585408 feb  4 13:03 qtmoko-debian-v31.ubi
> >> >  -rw-r--r--  1 user group  2218272 feb  4 12:58 uImage-v31.bin
> >> >  
> >> >  Any idea?
> > Same here.
> >
> > http://lists.openmoko.org/pipermail/community/2010-December/063993.html
> >
> > I had QtMoko v28 in NAND(jffs).
> > Installed QtMoko v30(ubifs) to NAND. Worked fine.
> > Installed Debian to SD with install.sh script started from NAND QtMoko.
> >    Debian worked
> > Installed SRH(ubifs) to NAND. Worked.
> > Installed QtMoko v30 to NAND. Can't boot. Same error as yours.
> > With some random multiple reflashing of kernel/rootfs/u-boot-env
> > managed to make QtMoko v30 boot from NAND.
> > Upgraded to QtMoko v31. Can't boot. Same error as yours.
> > Kernel complains it cant find root fs. Pity it doesn't show boot
> > options in the panic message.
> > Installed QtMoko v28 to NAND(jffs). Boots fine.
> > QtMoko v31 from SD boots fine and shows regular NAND partition layout.
> >
> > neo:~# cat /proc/mtd
> > dev:    size   erasesize  name
> > mtd0: 00200000 00010000 "physmap-flash.0"
> > mtd1: 00040000 00020000 "qi"
> > mtd2: 00040000 00020000 "depr-ub-env"
> > mtd3: 00800000 00020000 "kernel"
> > mtd4: 000a0000 00020000 "depr"
> > mtd5: 00040000 00020000 "identity-ext2"
> > mtd6: 0f6a0000 00020000 "rootfs"
> >
> > Have no idea how to debug this. The problem manifests only on some
> > phones so no hope for help from people who know.
> > Can someone enlighten me how the partitions are marked in NAND?
> >
> I have a similar problem, with gena2x uboot:
> with qtmoko 31 and 32 in NAND, uboot gives me somenthig like:
> 
> wrong data CRC
> 
> the 28.2 one works good
> any idea?

Yes, i saw this at least 3 times with other users. Cause is you have
wrong environment (u-boot setup). 

Cause of 'wrong data CRC' on NAND is older settings. In old u-boots
configs (and in read-only NOR u-boot config) it's set:

nand read.e 0x32000000 kernel 0x200000;

Which mean 'load 2Mb from NAND to ram'. if kernel >2mb, it load only
part of kernel and you getting 'wrong CRC' cause kernel had header with
CRC sum and it is checked upon boot.

You should set this to "nand read.e 0x32000000 kernel 0x300000;" to load
kernels up to 3Mb...

Now, usual problems:

1. you booting NOR instead of NAND boot (check first line in boot
screen)

2. you forgot to flash u-boot environment (read
http://wiki.openmoko.org/wiki/U-boot-gena2x )

3. you forgot to setup your u-boot environment (read
http://wiki.openmoko.org/wiki/U-boot-gena2x )

Go read that FAQ and ensure you did everything mentioned in it.

Gennady.