[U-Boot-Users] Kernel panic: VFS: Unable to mount root fs on 1f:03

[SETTE AGOSTINO - technolabs]

Hi All,

I am having problems with U-Boot 1.2.0. Hereafter is reported the card
boot

U-Boot 1.2.0 (Jun 18 2007 - 12:58:28)

CPU:   MPC852TxxZPnnA at 66 MHz: 4 kB I-Cache 4 kB D-Cache FEC present
Board: MPC852
       Watchdog enabled
DRAM:  16 MB
FLASH: 16 MB
In:    serial
Out:   serial
Err:   serial
Restart Reason: 0xc0000000
SPI Chipselects: 0= EPLD, 1= EEPROM, 2= EXT
PUMA:  env. variable puma_addr undefined
Net:   FEC ETHERNET
Hit any key to stop autoboot:  0

## Booting image at 40180000 ...
   Image Name:   Linux-2.4.20-rthal5
   Created:      2006-12-22  10:23:37 UTC
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    617326 Bytes = 602.9 kB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
Kernel panic: VFS: Unable to mount root fs on 1f:03

Here is the env

baudrate=19200
loads_echo=1
gatewayip=0.0.0.0
ethact=FEC ETHERNET
ethaddr=00:0f:bb:19:cd:1f
fileaddr=100000
netmask=255.255.255.0
ipaddr=192.168.0.42
serverip=192.168.0.254
board=MPC852
pram=256
bootdelay=2
kernel_addr=40180000
kernel_end=4025ffff
basefs_addr=40260000
basefs_end=4047ffff
optfs_addr=40480000
optfs_end=404fffff
usrfs_addr=40500000
usrfs_end=407fffff
info_addr=4003FEC0
unlock=yes
mtdargs=mtdparts=0:256k(b),1280k(u),896k(k),2176k(r),512k(o),-(j)
optargs=quiet flashwidth=16 ccm=852
dl_kernel=tftp 100000 "$(board)/bps/pImage"; erase $(kernel_addr)
$(kernel_end); cp.b 100000 $(kernel_addr) $(filesize)
dl_basefs=tftp 100000 "$(board)/bps/basefs.cramfs"; erase $(basefs_addr)
$(basefs_end); cp.b 100000 $(basefs_addr) $(filesize)
dl_optfs=tftp 100000 "$(board)/bps/optfs.cramfs"; erase $(optfs_addr)
$(optfs_end); cp.b 100000 $(optfs_addr) $(filesize)
dl_bootenv=tftp 100000 "$(board)/bps/bootenv.img"; autoscr 100000
dl_info=tftp 100000 "$(board)/bps/bpsinfo.img";protect off 40000000
4003FFFF;cp.b 100000 $(info_addr) $(filesize);protect on 40000000
4003FFFF
dl_all=run dl_bootenv;run dl_kernel;run dl_basefs;run dl_optfs;run
dl_info
bootcmd=run dl_bps; run bargs; bootm $(kernel_addr)
bargs=setenv bootargs $(mtdargs) $(optargs) mem=$(mem)
root=/dev/mtdblock3
ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off wdt
8xx=timeout:120
dl_bps=echo
stdin=serial
stdout=serial
stderr=serial
mem=16128k

Environment size: 1427/65532 bytes

And the flinfo

Bank # 1: CFI conformant FLASH (16 x 16)  Size: 16 MB in 131 Sectors
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x21
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 2 ms, buffer size: 64 bytes

  Sector Start Addresses:
  40000000   RO   40008000   RO   40010000   RO   40018000   RO
40020000   RO
  40040000        40060000        40080000        400A0000
400C0000
  400E0000        40100000        40120000        40140000
40160000
  40180000        401A0000        401C0000        401E0000
40200000
  40220000        40240000        40260000        40280000
402A0000
  402C0000        402E0000        40300000        40320000
40340000
  40360000        40380000        403A0000        403C0000
403E0000
  40400000        40420000        40440000        40460000
40480000
  404A0000        404C0000        404E0000        40500000
40520000
  40540000        40560000        40580000        405A0000
405C0000
  405E0000        40600000        40620000        40640000
40660000
  40680000        406A0000        406C0000        406E0000
40700000
  40720000        40740000        40760000        40780000
407A0000
  407C0000        407E0000        40800000        40820000
40840000
  40860000        40880000        408A0000        408C0000
408E0000
  40900000        40920000        40940000        40960000
40980000
  409A0000        409C0000        409E0000        40A00000
40A20000
  40A40000        40A60000        40A80000        40AA0000
40AC0000
  40AE0000        40B00000        40B20000        40B40000
40B60000
  40B80000        40BA0000        40BC0000        40BE0000
40C00000
  40C20000        40C40000        40C60000        40C80000
40CA0000
  40CC0000        40CE0000        40D00000        40D20000
40D40000
  40D60000        40D80000        40DA0000        40DC0000
40DE0000
  40E00000        40E20000        40E40000        40E60000
40E80000
  40EA0000        40EC0000        40EE0000        40F00000
40F20000
  40F40000        40F60000        40F80000        40FA0000
40FC0000
  40FE0000

I think there are problems with MTDs. If I change in the bootargs
"root=/dev/mtdblock3" with "root=/dev/mtdblock/3" I have the following
error:

=> boot

## Booting image at 40180000 ...
   Image Name:   Linux-2.4.20-rthal5
   Created:      2006-12-22  10:23:37 UTC
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    617326 Bytes = 602.9 kB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
Kernel panic: VFS: Unable to mount root fs on 1f:00


Does anyone know how to fix it?

Thanks
Ciao
Agostino