kernel panic on MPC8323 custom board

DISCUSSION Dario Presti 2 participants 6 messages Jan 7, 2010 – Jan 12, 2010

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Dario Presti

author

2010-01-07 13:11 UTC #0 lore raw

Hello,
I'm working on MPC8323_rdb board whit 1 new flash device S29GL512P instead of original flash devices.
the bootloader is u-boot 1.1.6 (I know is too old and I'm going to upgrade it) and the kernel is 2.6.20.
I did this modification to the bootloader to support new flash:

1)I modified the board/mpc8323rdb/config.mk file to set TEXT_BASE from 0xFE000000 TO 0xFC000000
2)I modified the file /include/configs/MPC8323RDB.h:

#define CFG_FLASH_BASE 0xFC000000 /* FLASH base address */
#define CFG_FLASH_SIZE 64 /* FLASH size is 64M */
#define CFG_LBLAWBAR0_PRELIM CFG_FLASH_BASE /* Window base at flash base */
#define CFG_LBLAWAR0_PRELIM 0x80000019 /* 64MB window size */
#define CFG_OR0_PRELIM 0xfc006ff7 /* 64MB Flash size */
#define CFG_MAX_FLASH_BANKS 1 /* number of banks */
#define CFG_MAX_FLASH_SECT 512 /* sectors per device */

3)I modify and recompiled .dts file

flash@fc000000 {
		device_type = "jedec-flash";
		compatible = "direct-mapped";
		probe-type = "CFI";
		reg = <0xfc000000 0x1000000>;
		bank-width = <0x2>;
		partitions = <0x0 0x80001 0x80000 0x20000 0xa0000 0x180000 0x220000
0xde0000>;
		partition-names = "U-Boot", "dtb", "Kernel", "rootfs";
	};

but the kernel find the flash at 0xFE000000 and the boot stop because kernel panic. The log is:

U-Boot 1.1.6 (Dec 16 2009 - 18:24:26) MPC83XX

Clock configuration:

  Coherent System Bus:  133 MHz
  Core:                 333 MHz
  QE:                   200 MHz
  BRG:                  100 MHz
  Local Bus Controller: 133 MHz
  Local Bus:             66 MHz
  DDR:                  266 MHz
  SEC:                  133 MHz
  I2C1:                 133 MHz

CPU: MPC8321E, Rev: 11 at 333.333 MHz
Board: Freescale MPC8323ERDB
I2C: ready
DRAM:
DDR RAM: 64 MB
FLASH: 64 MB
PCI clock is 66MHz

In:    serial
Out:   serial
Err:   serial
Net:   UEC: PHY is Generic MII (2430d80)
UEC: PHY is Generic MII (2430d80)

FSL UEC0, FSL UEC1
Hit any key to stop autoboot: 0
Scanning PCI devices on bus 0
BusDevFun VendorId DeviceId Device Class Sub-Class
_____________________________________________________________
00.00.00 0x1957 0x00a6 Processor 0x20
## Booting image at fc100000 ...

   Image Name:   Linux-2.6.20.6-rt8
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    1872707 Bytes =  1.8 MB

Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Booting using flat device tree at 0xfc080000
Loading Device Tree to 00783000, end 007fd11f ... Using MPC832x RDB
machine description
Linux version 2.6.20.6-rt8 (design@telsa024) (gcc version 4.0.2 20060628 (Wasabi)) #4 PREEMPT Fri Mar 28 10:31:51 CET 2008
setup_arch: bootmem
mpc832x_rdb_setup_arch()
Found MPC83xx PCI host bridge at 0x00000000e0008500. Firmware bus number:
0->0
pio-handle not available
arch: exit
Zone PFN ranges:
DMA 0 -> 16384
Normal 16384 -> 16384
early_node_map[1] active PFN ranges

    0:        0 ->    16384

Using MPC832x RDB machine description
Linux version 2.6.20.6-rt8 (design@telsa024) (gcc version 4.0.2 20060628 (Wasabi)) #4 PREEMPT Fri Mar 28 10:31:51 CET 2008
Found MPC83xx PCI host bridge at 0x00000000e0008500. Firmware bus number:
0->0
pio-handle not available
Zone PFN ranges:
DMA 0 -> 16384
Normal 16384 -> 16384
early_node_map[1] active PFN ranges

    0:        0 ->    16384

Real-Time Preemption Support (C) 2004-2007 Ingo Molnar
Built 1 zonelists. Total pages: 16256
Kernel command line: root=/dev/mtdblock4 rootfstype=jffs2 rw console=ttyS0, 38400
WARNING: experimental RCU implementation.
IPIC (128 IRQ sources) at fdefb700
QEIC (64 IRQ sources) at fdefa080
PID hash table entries: 256 (order: 8, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 60408k/65536k available (3552k kernel code, 5064k reserved, 224k data, 145k bss, 156k init)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
PCI: Probing PCI hardware
Generic PHY: Registered new driver
Sangoma WANPIPE Router v1.1 (c) 1995-2000 Sangoma Technologies Inc.
NET: Registered protocol family 8
NET: Registered protocol family 20
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 2048 (order: 4, 65536 bytes) TCP bind hash table entries: 1024 (order: 2, 28672 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
JFFS2 version 2.2. (NAND) (C) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
Generic RTC Driver v1.07
WDT driver for MPC83xx initialized. mode:reset timeout=65535 (32 seconds)
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0xe0004500 (irq = 16) is a 16550A serial8250.0: ttyS1 at MMIO 0xe0004600 (irq = 17) is a 16550A RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize
loop: loaded (max 8 devices)
ucc_tdm: Freescale QE UCC TDM Driver
config_tdm Delay for Legerity!
tdm_start 16-bit linear pcm mode active with slots 0 & 2 tdm_start UCC based TDM enabled
ucc_tdm_probe UCC based tdm module installed
UCC Ethernet Controller MII Bus: probed
ucc_geth: QE UCC Gigabit Ethernet Controller
ucc_geth: UCC2 at 0xe0103000 (irq = 20)
eth0: MTU=1500 (frame size=1518,rx_buffer_size=1536,truesize=1800,sk_buff=168)
ucc_geth: UCC3 at 0xe0102200 (irq = 34)
eth1: MTU=1500 (frame size=1518,rx_buffer_size=1536,truesize=1800,sk_buff=168)
SKB Handler initialized(max=64)
ICPlus IP175C: Registered new driver
hostap_plx: 0.4.4-kernel (Jouni Malinen <[email protected]>)
hostap_pci: 0.4.4-kernel (Jouni Malinen <[email protected]>)
dmfe: Davicom DM9xxx net driver, version 1.36.4 (2002-01-17) winbond-840.c:v1.01-e (2.4 port) Sep-11-2006 Donald Becker <[email protected]>
http://www.scyld.com/network/drivers.html
uli526x: ULi M5261/M5263 net driver, version 0.9.3 (2005-7-29) MPC8323RDB Flash Bank 1 device: 2000000 at fe000000 Partition number 6 MPC8323RDB Flash Bank 1 Map Info: Found 1 x16 devices at 0x0 in 16-bit bank NOR chip too large to fit in mapping. Attempting to cope... Support for command set 0002 not present
gen_probe: No supported Vendor Command Set found
e01004c0.spi: MPC83xx SPI Controller driver at 0xc505c4c0 (irq = 21) i2c /dev entries driver
Driver for 1-wire Dallas network protocol.
nf_conntrack version 0.5.0 (512 buckets, 4096 max)
ip_tables: (C) 2000-2006 Netfilter Core Team
arp_tables: (C) 2002 David S. Miller
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Bridge firewalling registered
Ebtables v2.0 registered
lec.c: Mar 25 2008 16:38:30 initialized
mpc.c: Mar 25 2008 16:38:27 initialized
802.1Q VLAN Support v1.8 Ben Greear <[email protected]> All bugs added by David S. Miller <[email protected]>
ieee80211: 802.11 data/management/control stack, git-1.1.13
ieee80211: Copyright (C) 2004-2005 Intel Corporation <[email protected]>
Time: timebase clocksource has been installed.
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
No filesystem could mount root, tried: jffs2

Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(2,0)
Call Trace:
[C047BE60] [C00088AC] show_stack+0x50/0x190 (unreliable)
[C047BE90] [C0027014] panic+0x9c/0x188
[C047BF20] [C0351AD4] mount_block_root+0x198/0x238
[C047BF70] [C0351E88] prepare_namespace+0xc4/0x1b4
[C047BF90] [C0003B68] init+0x28c/0x2b0
[C047BFF0] [C00102EC] kernel_thread+0x44/0x60
 <0>Rebooting in 180 seconds..

I think there is problem whit device tree, but I don't know what is, could someone help me?

Thanks
Best Regards

Dario

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Scott Wood

2010-01-07 17:59 UTC #1 lore raw

Quoted 5 lines · Dario Presti

Hello,
I'm working on MPC8323_rdb board whit 1 new flash device S29GL512P instead of original flash devices.
the bootloader is u-boot 1.1.6 (I know is too old and I'm going to upgrade it) and the kernel is 2.6.20.

2.6.20 is also too old. :-)

Quoted 23 lines

I did this modification to the bootloader to support new flash:
1)I modified the board/mpc8323rdb/config.mk file to set TEXT_BASE from 0xFE000000 TO 0xFC000000
2)I modified the file /include/configs/MPC8323RDB.h:
#define CFG_FLASH_BASE 0xFC000000 /* FLASH base address */ #define CFG_FLASH_SIZE 64 /* FLASH size is 64M */ #define CFG_LBLAWBAR0_PRELIM CFG_FLASH_BASE /* Window base at flash base */
#define CFG_LBLAWAR0_PRELIM 0x80000019 /* 64MB window size */ #define CFG_OR0_PRELIM 0xfc006ff7 /* 64MB Flash size */ #define CFG_MAX_FLASH_BANKS 1 /* number of banks */
#define CFG_MAX_FLASH_SECT 512 /* sectors per device */
3)I modify and recompiled .dts file
flash@fc000000 {
		device_type = "jedec-flash";
		compatible = "direct-mapped";
		probe-type = "CFI";
		reg = <0xfc000000 0x1000000>;
		bank-width = <0x2>;
		partitions = <0x0 0x80001 0x80000 0x20000 0xa0000 0x180000 0x220000
0xde0000>;
		partition-names = "U-Boot", "dtb", "Kernel", "rootfs";
	};

Quoted 2 lines

but the kernel find the flash at 0xFE000000 and the boot stop because kernel panic. The log is:

Is the kernel even using that node, or some other means to determine the flash location? The "MPC8323RDB Flash Bank 1" messages make me think you've got a custom flash map driver.

-Scott

Dario Presti

author

2010-01-08 09:23 UTC #2 lore raw

Quoted 48 lines · Scott Wood-2 wrote:

Quoted 7 lines · Dario Presti
Hello,
I'm working on MPC8323_rdb board whit 1 new flash device S29GL512P instead
of original flash devices.
the bootloader is u-boot 1.1.6 (I know is too old and I'm going to upgrade
it) and the kernel is 2.6.20.
2.6.20 is also too old. :-)
Quoted 28 lines
I did this modification to the bootloader to support new flash:
1)I modified the board/mpc8323rdb/config.mk file to set TEXT_BASE from 0xFE000000 TO 0xFC000000
2)I modified the file /include/configs/MPC8323RDB.h:
#define CFG_FLASH_BASE 0xFC000000 /* FLASH base address */
#define CFG_FLASH_SIZE 64 /* FLASH size is 64M */
#define CFG_LBLAWBAR0_PRELIM CFG_FLASH_BASE /* Window base at flash base
*/
#define CFG_LBLAWAR0_PRELIM 0x80000019 /* 64MB window size */
#define CFG_OR0_PRELIM 0xfc006ff7 /* 64MB Flash size */
#define CFG_MAX_FLASH_BANKS 1 /* number of banks */
#define CFG_MAX_FLASH_SECT 512 /* sectors per device */
3)I modify and recompiled .dts file
flash@fc000000 {
		device_type = "jedec-flash";
		compatible = "direct-mapped";
		probe-type = "CFI";
		reg = <0xfc000000 0x1000000>;
		bank-width = <0x2>;
		partitions = <0x0 0x80001 0x80000 0x20000 0xa0000 0x180000 0x220000
0xde0000>;
		partition-names = "U-Boot", "dtb", "Kernel", "rootfs";
	};
Quoted 3 lines
but the kernel find the flash at 0xFE000000 and the boot stop because kernel
panic. The log is:
Is the kernel even using that node, or some other means to determine the flash location? The "MPC8323RDB Flash Bank 1" messages make me think you've got a custom flash map driver.

Quoted 7 lines

-Scott
_______________________________________________
Linuxppc-dev mailing list
[email protected]
https://lists.ozlabs.org/listinfo/linuxppc-dev

Thanks Scott,
I did not find where the custom map flash driver is in the kernel source, where it is?
How can I say to the kernel to use device tree instead of custom map of flash?

Regards
Dario

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Scott Wood

2010-01-08 17:28 UTC #3 lore raw

Quoted 2 lines · Dario Presti

Thanks Scott, I did not find where the custom map flash driver is in the kernel source, where it is?

Grep your kernel tree for "MPC8323RDB Flash".

Quoted 2 lines

How can I say to the kernel to use device tree instead of custom map of flash?

Turn off that mapping driver, and turn on CONFIG_MTD_PHYSMAP_OF. This stuff was very new in 2.6.20, though, so there may be issues. I'd upgrade if you can.

-Scott

Dario Presti

author

2010-01-12 14:26 UTC #4 lore raw

Quoted 6 lines · Scott Wood-2 wrote:

Turn off that mapping driver, and turn on CONFIG_MTD_PHYSMAP_OF. This stuff was very new in 2.6.20, though, so there may be issues. I'd upgrade if you can.

I rebuilded another kernel version 2.6.20.6 whit LTIB and u-boot 1.3.2 (I don't have the corresponding source file of my images).
I turned on CONFIG_MTD_PHYSMAP_OF, here there is part of config file:

# Memory Technology Devices (MTD)
#
CONFIG_MTD=y
# CONFIG_MTD_DEBUG is not set
CONFIG_MTD_CONCAT=y
CONFIG_MTD_PARTITIONS=y
# CONFIG_MTD_REDBOOT_PARTS is not set
CONFIG_MTD_CMDLINE_PARTS=y

#
# User Modules And Translation Layers
#
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLKDEVS=y
CONFIG_MTD_BLOCK=y
CONFIG_FTL=y
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set

#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=y
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_GEN_PROBE=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_NOSWAP=y
# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
# CONFIG_MTD_CFI_LE_BYTE_SWAP is not set
CONFIG_MTD_CFI_GEOMETRY=y
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_OTP is not set
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CFI_AMDSTD=y
# CONFIG_MTD_CFI_STAA is not set
CONFIG_MTD_CFI_UTIL=y
# CONFIG_MTD_RAM is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set
# CONFIG_MTD_OBSOLETE_CHIPS is not set

#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_PHYSMAP is not set
CONFIG_MTD_PHYSMAP_OF=y
# CONFIG_MTD_PLATRAM is not set

But still hte mapping is not showed on boot, it seems to not read yet the blob node. The boot-log is:

U-Boot 1.3.2 (Jan 8 2010 - 12:57:17) MPC83XX

Reset Status: Software Hard, External/Internal Soft, External/Internal Hard

CPU:   e300c2, MPC8321E, Rev: 11 at 333.333 MHz, CSB:  133 MHz
Board: Freescale MPC8323ERDB
I2C:   ready
DRAM:  64 MB
FLASH: 64 MB
In:    serial
Out:   serial
Err:   serial
Net:   FSL UEC0, FSL UEC1
Hit any key to stop autoboot:  0

Scanning PCI devices on bus 0
BusDevFun VendorId DeviceId Device Class Sub-Class
_____________________________________________________________
00.00.00 0x1957 0x00a6 Processor 0x20
## Booting image at fc100000 ...

   Image Name:   Linux-2.6.20.6-rt8
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    1495894 Bytes =  1.4 MB

Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Booting using the fdt at 0xfc080000
Loading Device Tree to 00785000, end 007ff11f ... OK
Using MPC832x RDB machine description
Linux version 2.6.20.6-rt8 (cubit@cubit-laptop) (gcc version 4.2.3 (Sourcery G++ Lite 4.2-171)) #9 PREEMPT Tue Jan 12 14:53:56 CET 2010
setup_arch: bootmem
mpc832x_rdb_setup_arch()
Found MPC83xx PCI host bridge at 0x00000000e0008500. Firmware bus number:
0->0
pio-handle not available
arch: exit
Zone PFN ranges:
DMA 0 -> 16384
Normal 16384 -> 16384
early_node_map[1] active PFN ranges

    0:        0 ->    16384

Using MPC832x RDB machine description
Linux version 2.6.20.6-rt8 (cubit@cubit-laptop) (gcc version 4.2.3 (Sourcery G++ Lite 4.2-171)) #9 PREEMPT Tue Jan 12 14:53:56 CET 2010
Found MPC83xx PCI host bridge at 0x00000000e0008500. Firmware bus number:
0->0
pio-handle not available
Zone PFN ranges:
DMA 0 -> 16384
Normal 16384 -> 16384
early_node_map[1] active PFN ranges

    0:        0 ->    16384

Real-Time Preemption Support (C) 2004-2007 Ingo Molnar
Built 1 zonelists. Total pages: 16256
Kernel command line: root=/dev/mtdblock4 rootfstype=jffs2 rw console=ttyS0, 38400
WARNING: experimental RCU implementation.
IPIC (128 IRQ sources) at fdefb700
QEIC (64 IRQ sources) at fdefa080
PID hash table entries: 256 (order: 8, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 61200k/65536k available (2836k kernel code, 4268k reserved, 180k data, 110k bss, 132k init)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
PCI: Probing PCI hardware
Generic PHY: Registered new driver
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 2048 (order: 4, 65536 bytes) TCP bind hash table entries: 1024 (order: 2, 28672 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
NTFS driver 2.1.28 [Flags: R/O].
JFFS2 version 2.2. (NAND) (C) 2001-2006 Red Hat, Inc.
fuse init (API version 7.8)
JFS: nTxBlock = 478, nTxLock = 3829
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
Generic RTC Driver v1.07
WDT driver for MPC83xx initialized. mode:reset timeout=65535 (32 seconds)
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0xe0004500 (irq = 16) is a 16550A serial8250.0: ttyS1 at MMIO 0xe0004600 (irq = 17) is a 16550A RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize
loop: loaded (max 8 devices)
ucc_tdm: Freescale QE UCC TDM Driver
config_tdm Delay for Legerity!
tdm_start 16-bit linear pcm mode active with slots 0 & 2 tdm_start UCC based TDM enabled
ucc_tdm_probe UCC based tdm module installed
UCC Ethernet Controller MII Bus: probed
ucc_geth: QE UCC Gigabit Ethernet Controller
ucc_geth: UCC2 at 0xe0103000 (irq = 20)
eth0: MTU=1500 (frame size=1518,rx_buffer_size=1536,truesize=1792,sk_buff=160)
ucc_geth: UCC3 at 0xe0102200 (irq = 34)
eth1: MTU=1500 (frame size=1518,rx_buffer_size=1536,truesize=1792,sk_buff=160)
SKB Handler initialized(max=64)
ICPlus IP175C: Registered new driver
block2mtd: version $Revision: 1.30 $
e01004c0.spi: MPC83xx SPI Controller driver at 0xc50aa4c0 (irq = 21)
usbmon: debugfs is not available
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
i2c /dev entries driver
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
No filesystem could mount root, tried: <6>Time: timebase clocksource has been installed.
jffs2

Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)
Call Trace:

[C03B5E70] [C000819C] (unreliable)
[C03B5EB0] [C0026AB0]
[C03B5F00] [C02A4B98]
[C03B5F50] [C02A4DEC]
[C03B5F70] [C0003B04]
[C03B5FF0] [C00102BC]
<0>Rebooting in 180 seconds..

Do I miss to turn on something or kernel version do not support device tree?

Has u-boot 1.3.2 mtdparts command? When I try to use it an 'unknown command' occur.

Thanks

Dario

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Dario Presti

author

2010-01-12 16:31 UTC #5 lore raw

Quoted 6 lines · Dario Presti

But still hte mapping is not showed on boot, it seems to not read yet the blob node. The boot-log is:

Ok now mapping woks fine. The error was in .dts file, changing

flash@fc000000 {
		device_type = "rom";
		compatible = "cfi-flash";

flash@fc000000 { 		
		device_type = "rom";
		compatible = "direct-mapped";

The partitioning works fine, but there is still kernel panic.

The boot log is:

U-Boot 1.3.2 (Jan 8 2010 - 12:57:17) MPC83XX

Reset Status:

CPU:   e300c2, MPC8321E, Rev: 11 at 333.333 MHz, CSB:  133 MHz
Board: Freescale MPC8323ERDB
I2C:   ready
DRAM:  64 MB
FLASH: 64 MB
In:    serial
Out:   serial
Err:   serial
Net:   FSL UEC0, FSL UEC1
Hit any key to stop autoboot:  0

   Image Name:   Linux-2.6.20.6-rt8
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    1507732 Bytes =  1.4 MB

Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Booting using the fdt at 0xfc080000
Loading Device Tree to 00785000, end 007ff11f ... OK
Using MPC832x RDB machine description
Linux version 2.6.20.6-rt8 (cubit@cubit-laptop) (gcc version 4.2.3 (Sourcery G++ Lite 4.2-171)) #13 PREEMPT Tue Jan 12 16:47:14 CET 2010
setup_arch: bootmem
mpc832x_rdb_setup_arch()
Found MPC83xx PCI host bridge at 0x00000000e0008500. Firmware bus number:
0->0
pio-handle not available
arch: exit
Zone PFN ranges:
DMA 0 -> 16384
Normal 16384 -> 16384
early_node_map[1] active PFN ranges

    0:        0 ->    16384

Using MPC832x RDB machine description
Linux version 2.6.20.6-rt8 (cubit@cubit-laptop) (gcc version 4.2.3 (Sourcery G++ Lite 4.2-171)) #13 PREEMPT Tue Jan 12 16:47:14 CET 2010 Found MPC83xx PCI host bridge at 0x00000000e0008500. Firmware bus number:
0->0
pio-handle not available
Zone PFN ranges:
DMA 0 -> 16384
Normal 16384 -> 16384
early_node_map[1] active PFN ranges

    0:        0 ->    16384

Real-Time Preemption Support (C) 2004-2007 Ingo Molnar
Built 1 zonelists. Total pages: 16256
Kernel command line: root=/dev/mtdblock4 rootfstype=jffs2 rw console=ttyS0, 38400
WARNING: experimental RCU implementation.
IPIC (128 IRQ sources) at fdefb700
QEIC (64 IRQ sources) at fdefa080
PID hash table entries: 256 (order: 8, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 61176k/65536k available (2860k kernel code, 4292k reserved, 180k data, 109k bss, 132k init)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
PCI: Probing PCI hardware
Generic PHY: Registered new driver
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 2048 (order: 4, 65536 bytes) TCP bind hash table entries: 1024 (order: 2, 28672 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
NTFS driver 2.1.28 [Flags: R/O].
JFFS2 version 2.2. (NAND) (SUMMARY) (C) 2001-2006 Red Hat, Inc. fuse init (API version 7.8)
JFS: nTxBlock = 478, nTxLock = 3827
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
Generic RTC Driver v1.07
WDT driver for MPC83xx initialized. mode:reset timeout=65535 (32 seconds)
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0xe0004500 (irq = 16) is a 16550A serial8250.0: ttyS1 at MMIO 0xe0004600 (irq = 17) is a 16550A RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize
loop: loaded (max 8 devices)
ucc_tdm: Freescale QE UCC TDM Driver
config_tdm Delay for Legerity!
tdm_start 16-bit linear pcm mode active with slots 0 & 2 tdm_start UCC based TDM enabled
ucc_tdm_probe UCC based tdm module installed
UCC Ethernet Controller MII Bus: probed
ucc_geth: QE UCC Gigabit Ethernet Controller
ucc_geth: UCC2 at 0xe0103000 (irq = 20)
eth0: MTU=1500 (frame size=1518,rx_buffer_size=1536,truesize=1792,sk_buff=160)
ucc_geth: UCC3 at 0xe0102200 (irq = 34)
eth1: MTU=1500 (frame size=1518,rx_buffer_size=1536,truesize=1792,sk_buff=160)
SKB Handler initialized(max=64)
ICPlus IP175C: Registered new driver
flash: Found 1 x16 devices at 0x0 in 16-bit bank
Amd/Fujitsu Extended Query Table at 0x0040
flash: CFI does not contain boot bank location. Assuming top. number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. RedBoot partition parsing not available
physmap-flash flash: Using OF partition information
Creating 4 MTD partitions on "flash":
0x00000000-0x00080000 : "U-Boot"
0x00080000-0x00100000 : "dtb"
0x00100000-0x00300000 : "Kernel"
0x00300000-0x01000000 : "rootfs"
block2mtd: version $Revision: 1.30 $
e01004c0.spi: MPC83xx SPI Controller driver at 0xc50aa4c0 (irq = 21)
usbmon: debugfs is not available
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
i2c /dev entries driver
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
No filesystem could mount root, tried: <6>Time: timebase clocksource has been installed.
jffs2

Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)
Call Trace:

[C03BBE70] [C000819C] (unreliable)
[C03BBEB0] [C0026AB0]
[C03BBF00] [C02AAB98]
[C03BBF50] [C02AADEC]
[C03BBF70] [C0003B04]
[C03BBFF0] [C00102BC]
<0>Rebooting in 180 seconds..

But still unable to mount root...any suggestion?

Thanks

Dario

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