Problem with UBIFS (NOR flash) in uClinux

Altera_Forum · ‎06-04-2011

Hello,

I'm trying use UBIFS in my board because I had problem with JFFS2, after some writes in JFFS2 I can't write anymore and shows a message:

MTD do_write_oneword(): software timeout

Write of 188 bytes at 0x005fc078 failed. returned -5, retlen 0

Not marking the space at 0x005fc078 as dirty because the flash driver returned o

Because this problem I'm trying UBIFS.

I use a NOR FLASH with 8MB (S29JL064H) and uClinux kernel 2.30

In the kernel is enabled

config.c (Flash partitions)

{

.name = "romfs",

.size = 0x600000,

.offset = 0x200000,

},

{

.name = "loader/kernel",

.size = 0x200000,

.offset = 0,

}

--- Memory Technology Device (MTD) support

[ ] Debugging

< > MTD concatenating support

[*] MTD partitioning support

<*> Enable UBI

(4096) UBI wear-leveling threshold

And in Miscellaneous filesystems

<*> UBIFS file system support

In the kernel boot :

(rootfstype=ubifs ubi.mtd=0 root=ubi0:rootfs) Default kernel command

For create a ubifs image I used

cat ubinize.cfg

[ubifs]

mode=ubi

image=ubifs.img

vol_id=0

vol_size=4MiB

vol_type=dynamic

vol_name=rootfs

vol_alignment=1

vol_flags=autoresize

mkfs.ubifs -d romfs -m 1 -e 65408 -c 128 -o ubifs.img -D device_table.txt

ubinize -o ubi.img -m 1 -p 64KiB -v ubinize.cfg

Everthing is allrigth , to create a .flash I use the commands

bin2flash --input=ubi.img --location=0x200000 --output=ubi.flash

nios2-flash-programmer --base=0x2000000 --erase-all (format flash)

nios2-flash-programmer --base=0x2000000 ubi.flash

After this I tried boot with my kernel

nios2-download -g zImage

After the boot I have a kernel panic

uClinux/Nios II

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 2032

Kernel command line: rootfstype=ubifs ubi.mtd=0 root=ubi0:rootfs

NR_IRQS:32

PID hash table entries: 32 (order: 5, 128 bytes)

Dentry cache hash table entries: 1024 (order: 0, 4096 bytes)

Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)

Memory available: 5804k/2107k RAM, 0k/0k ROM (1747k kernel code, 360k data)

Calibrating delay loop... 63.89 BogoMIPS (lpj=319488)

Mount-cache hash table entries: 512

net_namespace: 264 bytes

NET: Registered protocol family 16

init_BSP(): registering device resources

bio: create slab <bio-0> at 0

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 512 (order: 0, 4096 bytes)

TCP bind hash table entries: 512 (order: -1, 2048 bytes)

TCP: Hash tables configured (established 512 bind 512)

TCP reno registered

NET: Registered protocol family 1

io scheduler noop registered

io scheduler deadline registered (default)

ttyS0 at MMIO 0x2810000 (irq = 3) is a Altera UART

console [ttyS0] enabled

ttyS1 at MMIO 0x2810060 (irq = 4) is a Altera UART

IIPDEV Driver Initialized

SYSDEV Driver Initialized

TXTABLEDEV Driver Initialized

RXTABLEDEV Driver Initialized

ALARMDEV Driver Initialized

smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@cam.org>

eth0: SMC91C11xFD (rev 2) at 82800300 IRQ 2 [nowait]

eth0: Ethernet addr: 00:11:22:33:44:55

physmap platform flash device: 00800000 at 02000000

physmap-flash.0: Found 1 x16 devices at 0x0 in 8-bit bank

Amd/Fujitsu Extended Query Table at 0x0040

physmap-flash.0: 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.

cmdlinepart partition parsing not available

RedBoot partition parsing not available

Using physmap partition information

Creating 2 MTD partitions on "physmap-flash.0":

0x000000200000-0x000000800000 : "romfs"

0x000000000000-0x000000200000 : "loader/kernel"

UBI: attaching mtd0 to ubi0

UBI: physical eraseblock size: 65536 bytes (64 KiB)

UBI: logical eraseblock size: 65408 bytes

UBI: smallest flash I/O unit: 1

UBI: VID header offset: 64 (aligned 64)

UBI: data offset: 128

UBI: volume 0 ("rootfs") re-sized from 65 to 92 LEBs

UBI: attached mtd0 to ubi0

UBI: MTD device name: "romfs"

UBI: MTD device size: 6 MiB

UBI: number of good PEBs: 96

UBI: number of bad PEBs: 0

UBI: max. allowed volumes: 128

UBI: wear-leveling threshold: 4096

UBI: number of internal volumes: 1

UBI: number of user volumes: 1

UBI: available PEBs: 0

UBI: total number of reserved PEBs: 96

UBI: number of PEBs reserved for bad PEB handling: 0

UBI: max/mean erase counter: 1/0

UBI: background thread "ubi_bgt0d" started, PID 20

m25p80 spi0.0: m25p16 (2048 Kbytes)

Creating 1 MTD partitions on "m25p80":

0x000000000000-0x000000200000 : "fpga configuration"

i2c /dev entries driver

i2c-0: I2C OpenCores Bus Adapter, MMIO = 0x20, irq = 0

i2c-0: Using 16003kHz clock source

TCP cubic registered

NET: Registered protocol family 17

UBIFS error (pid 1): ubifs_check_node: bad CRC: calculated 0x914d95fa, read 0x3c

UBIFS error (pid 1): ubifs_check_node: bad node at LEB 0:0

UBIFS error (pid 1): ubifs_read_node: expected node type 6

VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0)

Please append a correct "root=" boot option; here are the available partitions:

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

Someone have some ideia?

Thanks,

Caio Pereira