at91: Status of NAND flash access
Bryan Evenson
bevenson at melinkcorp.com
Thu Dec 6 08:20:48 EST 2012
> -----Original Message-----
> From: Josh Wu [mailto:josh.wu at atmel.com]
> Sent: Thursday, December 06, 2012 5:30 AM
> To: Bryan Evenson
> Cc: linux-arm-kernel at lists.infradead.org
> Subject: Re: at91: Status of NAND flash access
>
> On 12/6/2012 11:13 AM, Bryan Evenson wrote:
> > Josh,
> >
> > I spoke too soon. I was able to read and use the filesystem from
> NAND
> > flash with the patch you provided when I applied it to the Atmel 3.4
> > kernel fork over at https://github.com/linux4sam/linux-at91/ (master
> branch).
> > When I applied the same patch to the recent mainline kernel (3.7-
> rc8),
> > it's still having problems accessing flash. The boot log shows that
> > it is setting up for PMECC correctly, but it has errors when it tries
> > to read from the filesystem.
> It is strange. The 3.4 kernel from at91 github just have a few
> changes.
> so rationally it behavior the same at PMECC function. From your log,
> the
> 3.7-rc8 kernel says the PMECC found uncorrectable errors.
>
> Can you try to dump or read from the u-boot? to see whether u-boot can
> recognize the same nand page that "too many errors" happened in kernel?
> I will do some test to see whether the 3.7-rc8 can work in my side or
> not.
U-Boot> nand read 0x22000000 0x800000 0x1D00000
NAND read: device 0 offset 0x800000, size 0x1d00000
PMECC: Too many errors
NAND read from offset 800000 failed -5
0 bytes read: ERROR
So u-boot has the same issue. However, changing the kernel to the linux-at91
forked kernel produced different results. That kernel noted the PMECC errors
but was still able to load the filesystem. My boot output from the successful
filesystem load is below. Is the 3.4 kernel performing corrections that the
mainline is not, or is it just ignoring errors that it should not be ignoring?
I'm hesitant to make any filesystem changes on this board because I know test
cases like this where it works one way but not the other are kind of rare. Let
me know if you have similar results on your end.
-Bryan
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0
Linux version 3.4.0 (xxxx at xxxx) (gcc version 4.5.3 20110311 (prerelease) (
GCC) ) #2 Wed Dec 5 15:36:29 EST 2012
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Atmel AT91SAM (Device Tree), model: Atmel AT91SAM9G25-EK
Memory policy: ECC disabled, Data cache writeback
AT91: Detected soc type: at91sam9x5
AT91: Detected soc subtype: at91sam9g25
AT91: sram at 0x300000 of 0x8000 mapped at 0xfef70000
Clocks: CPU 400 MHz, master 133 MHz, main 12.000 MHz
gpiochip_add: registered GPIOs 0 to 31 on device: pioA
gpiochip_add: registered GPIOs 32 to 63 on device: pioB
gpiochip_add: registered GPIOs 64 to 95 on device: pioC
gpiochip_add: registered GPIOs 96 to 127 on device: pioD
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512
Kernel command line: mem=128M console=ttyS0,115200 mtdparts=atmel_nand:8M(bootst
rap/uboot/kernel)ro,-(rootfs) root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1
root=ubi0:rootfs
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 119856k/119856k available, 11216k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc04650d4 (4469 kB)
.init : 0xc0466000 - 0xc048a000 ( 144 kB)
.data : 0xc048a000 - 0xc04c4420 ( 234 kB)
.bss : 0xc04c4444 - 0xc09c66e4 (5129 kB)
NR_IRQS:192
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 4294967286ms
Console: colour dummy device 80x30
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES: 8
... MAX_LOCK_DEPTH: 48
... MAX_LOCKDEP_KEYS: 8191
... CLASSHASH_SIZE: 4096
... MAX_LOCKDEP_ENTRIES: 16384
... MAX_LOCKDEP_CHAINS: 32768
... CHAINHASH_SIZE: 16384
memory used by lock dependency info: 3695 kB
per task-struct memory footprint: 1152 bytes
------------------------
| Locking API testsuite:
----------------------------------------------------------------------------
| spin |wlock |rlock |mutex | wsem | rsem |
--------------------------------------------------------------------------
A-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
double unlock: ok | ok | ok | ok | ok | ok |
initialize held: ok | ok | ok | ok | ok | ok |
bad unlock order: ok | ok | ok | ok | ok | ok |
--------------------------------------------------------------------------
recursive read-lock: | ok | | ok |
recursive read-lock #2: | ok | | ok |
mixed read-write-lock: | ok | | ok |
mixed write-read-lock: | ok | | ok |
--------------------------------------------------------------------------
hard-irqs-on + irq-safe-A/12: ok | ok | ok |
soft-irqs-on + irq-safe-A/12: ok | ok | ok |
hard-irqs-on + irq-safe-A/21: ok | ok | ok |
soft-irqs-on + irq-safe-A/21: ok | ok | ok |
sirq-safe-A => hirqs-on/12: ok | ok | ok |
sirq-safe-A => hirqs-on/21: ok | ok | ok |
hard-safe-A + irqs-on/12: ok | ok | ok |
soft-safe-A + irqs-on/12: ok | ok | ok |
hard-safe-A + irqs-on/21: ok | ok | ok |
soft-safe-A + irqs-on/21: ok | ok | ok |
hard-safe-A + unsafe-B #1/123: ok | ok | ok |
soft-safe-A + unsafe-B #1/123: ok | ok | ok |
hard-safe-A + unsafe-B #1/132: ok | ok | ok |
soft-safe-A + unsafe-B #1/132: ok | ok | ok |
hard-safe-A + unsafe-B #1/213: ok | ok | ok |
soft-safe-A + unsafe-B #1/213: ok | ok | ok |
hard-safe-A + unsafe-B #1/231: ok | ok | ok |
soft-safe-A + unsafe-B #1/231: ok | ok | ok |
hard-safe-A + unsafe-B #1/312: ok | ok | ok |
soft-safe-A + unsafe-B #1/312: ok | ok | ok |
hard-safe-A + unsafe-B #1/321: ok | ok | ok |
soft-safe-A + unsafe-B #1/321: ok | ok | ok |
hard-safe-A + unsafe-B #2/123: ok | ok | ok |
soft-safe-A + unsafe-B #2/123: ok | ok | ok |
hard-safe-A + unsafe-B #2/132: ok | ok | ok |
soft-safe-A + unsafe-B #2/132: ok | ok | ok |
hard-safe-A + unsafe-B #2/213: ok | ok | ok |
soft-safe-A + unsafe-B #2/213: ok | ok | ok |
hard-safe-A + unsafe-B #2/231: ok | ok | ok |
soft-safe-A + unsafe-B #2/231: ok | ok | ok |
hard-safe-A + unsafe-B #2/312: ok | ok | ok |
soft-safe-A + unsafe-B #2/312: ok | ok | ok |
hard-safe-A + unsafe-B #2/321: ok | ok | ok |
soft-safe-A + unsafe-B #2/321: ok | ok | ok |
hard-irq lock-inversion/123: ok | ok | ok |
soft-irq lock-inversion/123: ok | ok | ok |
hard-irq lock-inversion/132: ok | ok | ok |
soft-irq lock-inversion/132: ok | ok | ok |
hard-irq lock-inversion/213: ok | ok | ok |
soft-irq lock-inversion/213: ok | ok | ok |
hard-irq lock-inversion/231: ok | ok | ok |
soft-irq lock-inversion/231: ok | ok | ok |
hard-irq lock-inversion/312: ok | ok | ok |
soft-irq lock-inversion/312: ok | ok | ok |
hard-irq lock-inversion/321: ok | ok | ok |
soft-irq lock-inversion/321: ok | ok | ok |
hard-irq read-recursion/123: ok |
soft-irq read-recursion/123: ok |
hard-irq read-recursion/132: ok |
soft-irq read-recursion/132: ok |
hard-irq read-recursion/213: ok |
soft-irq read-recursion/213: ok |
hard-irq read-recursion/231: ok |
soft-irq read-recursion/231: ok |
hard-irq read-recursion/312: ok |
soft-irq read-recursion/312: ok |
hard-irq read-recursion/321: ok |
soft-irq read-recursion/321: ok |
-------------------------------------------------------
Good, all 218 testcases passed! |
---------------------------------
Calibrating delay loop... 198.04 BogoMIPS (lpj=990208)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x2033ced8 - 0x2033cf30
devtmpfs: initialized
dummy:
NET: Registered protocol family 16
AT91: Power Management (with slow clock mode)
AT91: Starting after power-restored wakeup
bio: create slab <bio-0> at 0
at_hdmac ffffec00.dma-controller: Atmel AHB DMA Controller ( cpy slave ), 8 chan
nels
at_hdmac ffffee00.dma-controller: Atmel AHB DMA Controller ( cpy slave ), 8 chan
nels
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
cfg80211: Calling CRDA to update world regulatory domain
Switching to clocksource tcb_clksrc
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 5, 147456 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP: reno registered
UDP hash table entries: 64 (order: 0, 5120 bytes)
UDP-Lite hash table entries: 64 (order: 0, 5120 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
NFS: Registering the id_resolver key type
jffs2: version 2.2. (NAND) (SUMMARY) �© 2001-2006 Red Hat, Inc.
msgmni has been set to 234
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
io scheduler noop registered (default)
fffff200.serial: ttyS0 at MMIO 0xfffff200 (irq = 1) is a ATMEL_SERIAL
console [ttyS0] enabled
f801c000.serial: ttyS1 at MMIO 0xf801c000 (irq = 5) is a ATMEL_SERIAL
f8020000.serial: ttyS2 at MMIO 0xf8020000 (irq = 6) is a ATMEL_SERIAL
f8028000.serial: ttyS4 at MMIO 0xf8028000 (irq = 8) is a ATMEL_SERIAL
brd: module loaded
loop: module loaded
mtdoops: mtd device (mtddev=name/number) must be supplied
atmel_nand: Use On Flash BBT
atmel_nand 40000000.nand: No DMA support for NAND access.
ONFI param page 0 valid
ONFI flash detected
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xda (Micron MT29F2G08AAD)
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
nand_read_bbt: bad block at 0x000009380000
2 cmdlinepart partitions found on MTD device atmel_nand
Creating 2 MTD partitions on "atmel_nand":
0x000000000000-0x000000800000 : "bootstrap/uboot/kernel"
0x000000800000-0x000010000000 : "rootfs"
UBI: attaching mtd1 to ubi0
UBI: physical eraseblock size: 131072 bytes (128 KiB)
UBI: logical eraseblock size: 126976 bytes
UBI: smallest flash I/O unit: 2048
UBI: VID header offset: 2048 (aligned 2048)
UBI: data offset: 4096
UBI: max. sequence number: 4249
UBI warning: print_rsvd_warning: cannot reserve enough PEBs for bad PEB handling
, reserved 15, need 19
UBI: attached mtd1 to ubi0
UBI: MTD device name: "rootfs"
UBI: MTD device size: 248 MiB
UBI: number of good PEBs: 1979
UBI: number of bad PEBs: 5
UBI: number of corrupted 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: 1979
UBI: number of PEBs reserved for bad PEB handling: 15
UBI: max/mean erase counter: 5/2
UBI: image sequence number: 191777507
UBI: background thread "ubi_bgt0d" started, PID 31
UBI error: ubi_init: cannot attach mtd1
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk at qualcomm.com>
macb f802c000.ethernet: (unregistered net_device): invalid hw address, using ran
dom
MACB_mii_bus: probed
macb f802c000.ethernet: eth0: Cadence MACB at 0xf802c000 irq 24 (4a:15:f4:49:94:
a4)
macb f802c000.ethernet: eth0: attached PHY driver [Davicom DM9161A] (mii_bus:phy
_addr=f802c000.etherne:00, irq=-1)
PPP generic driver version 2.4.2
NET: Registered protocol family 24
usbcore: registered new interface driver asix
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver cdc_eem
usbcore: registered new interface driver net1080
usbcore: registered new interface driver cdc_subset
usbcore: registered new interface driver zaurus
usbcore: registered new interface driver ipheth
usbcore: registered new interface driver cdc_ncm
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
atmel-ehci 700000.ehci: Atmel EHCI UHP HS
atmel-ehci 700000.ehci: new USB bus registered, assigned bus number 1
atmel-ehci 700000.ehci: irq 22, io mem 0x00700000
atmel-ehci 700000.ehci: USB 2.0 started, EHCI 1.00
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: Atmel EHCI UHP HS
usb usb1: Manufacturer: Linux 3.4.0 ehci_hcd
usb usb1: SerialNumber: 700000.ehci
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
at91_ohci 600000.ohci: AT91 OHCI
at91_ohci 600000.ohci: new USB bus registered, assigned bus number 2
at91_ohci 600000.ohci: irq 22, io mem 0x00600000
usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: AT91 OHCI
usb usb2: Manufacturer: Linux 3.4.0 ohci_hcd
usb usb2: SerialNumber: at91
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usbcore: registered new interface driver cdc_acm
cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver libusual
usbcore: registered new interface driver usbserial
usbcore: registered new interface driver usbserial_generic
USB Serial support registered for generic
usbserial: USB Serial Driver core
usbcore: registered new interface driver moto-modem
USB Serial support registered for moto-modem
usbcore: registered new interface driver opticon
USB Serial support registered for opticon
usbcore: registered new interface driver pl2303
USB Serial support registered for pl2303
usbcore: registered new interface driver qcserial
USB Serial support registered for Qualcomm USB modem
usbcore: registered new interface driver symbol
USB Serial support registered for symbol
i2c /dev entries driver
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
nf_conntrack version 0.5.0 (1872 buckets, 7488 max)
IPv4 over IPv4 tunneling driver
ip_tables: (C) 2000-2006 Netfilter Core Team
TCP: cubic registered
NET: Registered protocol family 17
lib80211: common routines for IEEE802.11 drivers
Registering the dns_resolver key type
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
UBIFS: recovery needed
UBIFS: recovery completed
UBIFS: mounted UBI device 0, volume 0, name "rootfs"
UBIFS: file system size: 247476224 bytes (241676 KiB, 236 MiB, 1949 LEBs)
UBIFS: journal size: 9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)
UBIFS: media format: w4/r0 (latest is w4/r0)
UBIFS: default compressor: lzo
UBIFS: reserved for root: 0 bytes (0 KiB)
VFS: Mounted root (ubifs filesystem) on device 0:11.
devtmpfs: mounted
Freeing init memory: 144K
INIT: version 2.86 booting
Please wait: booting...
Starting udev
udev[62]: starting version 165
Root filesystem already rw, not remounting
Caching udev devnodes
Populating dev cache
logger: mount: mount point /proc/bus/usb does not exist
ALSA: Restoring mixer settings...
/usr/sbin/alsactl: load_state:1625: No soundcards found...
Configuring network interfaces... eth0 no wireless extensions.
udhcpc (v1.18.3) started
run-parts: /etc/udhcpc.d/00avahi-autoipd exited with code 1
Sending discover...
Sending discover...
Sending discover...
netlink: 12 bytes leftover after parsing attributes.
netlink: 12 bytes leftover after parsing attributes.
netlink: 12 bytes leftover after parsing attributes.
No lease, failing
done.
Starting portmap daemon: portmap.
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
kernel.panic = 10
hwclock: can't open '/dev/misc/rtc': No such file or directory
Mon Nov 5 09:47:00 EST 2012
hwclock: can't open '/dev/misc/rtc': No such file or directory
INIT: Entering runlevel: 5
Starting system message bus: dbus.
Starting Dropbear SSH server: dropbear.
starting Busybox HTTP Daemon: httpd... done.
Starting Vixie-cron.
Starting ntpd: done
Starting syslogd/klogd: done
* Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon
...done.
> >
> > I noticed over at the linux-at91 fork that you had applied the PMECC
> > support on the 3.4.x_pmecc_dt_9x5 branch a few months ago. From
> > browsing the mainline I didn't see some of your changes from that
> > branch in the mainline. Are there some changes from the linux-at91
> fork that are still scheduled for mainlining?
> yes, this patch is not push to mainline yet. Currently the only concern
> is we are think about the PMECC error correct bits need to adjust by
> ONFI parameters that read from nand flash.
> But it is not decide yet. if no exception, this patch will push to
> mainline soon.
>
> Best Regards,
> Josh Wu
>
> > If it helps, here is the boot log when I tried to boot using a 3.7-
> rc8
> > kernel and DT.
> >
> > Thanks,
> > Bryan
> >
> > Uncompressing Linux... done, booting the kernel.
> > [ 0.000000] Booting Linux on physical CPU 0
> > [ 0.000000] Linux version 3.7.0-rc8-armv5-x0.16 (xxxx at xxxx) (gcc
> versio
> > n 4.6.2 20121016 (release) [ARM/embedded-4_6-branch revision 192487]
> > (GNU Tools for ARM Embedded Processors) ) #1 Wed Dec 5 16:11:30 EST
> 2012
> > [ 0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ),
> cr=00053177
> > [ 0.000000] CPU: VIVT data cache, VIVT instruction cache
> > [ 0.000000] Machine: Atmel AT91SAM (Device Tree), model: Atmel
> AT91SAM9G25-EK
> > [ 0.000000] Memory policy: ECC disabled, Data cache writeback
> > [ 0.000000] AT91: Detected soc type: at91sam9x5
> > [ 0.000000] AT91: Detected soc subtype: at91sam9g25
> > [ 0.000000] AT91: sram at 0x300000 of 0x8000 mapped at 0xfef70000
> > [ 0.000000] Clocks: CPU 400 MHz, master 133 MHz, main 12.000 MHz
> > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
> Total pag
> > es: 32512
> > [ 0.000000] Kernel command line: mem=128M console=ttyS0,115200
> mtdparts=atmel
> > _nand:8M(bootstrap/uboot/kernel)ro,-(rootfs) root=/dev/mtdblock1 rw
> > rootfstype=u bifs ubi.mtd=1 root=ubi0:rootfs
> > [ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
> > [ 0.000000] Dentry cache hash table entries: 16384 (order: 4,
> 65536 bytes)
> > [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768
> bytes)
> > [ 0.000000] Memory: 128MB = 128MB total
> > [ 0.000000] Memory: 124276k/124276k available, 6796k reserved, 0K
> highmem
> > [ 0.000000] Virtual kernel memory layout:
> > [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
> > [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
> > [ 0.000000] vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
> > [ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
> > [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
> > [ 0.000000] .text : 0xc0008000 - 0xc04b8630 (4802 kB)
> > [ 0.000000] .init : 0xc04b9000 - 0xc04e45c4 ( 174 kB)
> > [ 0.000000] .data : 0xc04e6000 - 0xc0516ce0 ( 196 kB)
> > [ 0.000000] .bss : 0xc0516d04 - 0xc05760bc ( 381 kB)
> > [ 0.000000] NR_IRQS:16 nr_irqs:16 16
> > [ 0.000000] sched_clock: 32 bits at 256 Hz, resolution 3906250ns,
> wraps every
> > 3892314108ms
> > [ 0.000000] Console: colour dummy device 80x30
> > [ 0.035156] Calibrating delay loop... 199.80 BogoMIPS (lpj=389120)
> > [ 0.035156] pid_max: default: 32768 minimum: 301
> > [ 0.035156] Mount-cache hash table entries: 512
> > [ 0.039062] CPU: Testing write buffer coherency: ok
> > [ 0.039062] Setting up static identity map for 0x20371d48 -
> 0x20371da0
> > [ 0.039062] devtmpfs: initialized
> > [ 0.042968] NET: Registered protocol family 16
> > [ 0.042968] DMA: preallocated 256 KiB pool for atomic coherent
> allocations
> > [ 0.070312] No ATAGs?
> > [ 0.070312] AT91: Power Management
> > [ 0.070312] AT91: Starting after power-restored wakeup
> > [ 0.121093] bio: create slab <bio-0> at 0
> > [ 0.125000] SCSI subsystem initialized
> > [ 0.128906] usbcore: registered new interface driver usbfs
> > [ 0.128906] usbcore: registered new interface driver hub
> > [ 0.128906] usbcore: registered new device driver usb
> > [ 0.132812] at91_i2c f8010000.i2c: AT91 i2c bus driver.
> > [ 0.132812] at91_i2c f8014000.i2c: AT91 i2c bus driver.
> > [ 0.136718] at91_i2c f8018000.i2c: AT91 i2c bus driver.
> > [ 0.140625] Switching to clocksource tcb_clksrc
> > [ 0.195312] NET: Registered protocol family 2
> > [ 0.199218] TCP established hash table entries: 4096 (order: 3,
> 32768 bytes)
> > [ 0.199218] TCP bind hash table entries: 4096 (order: 2, 16384
> bytes)
> > [ 0.199218] TCP: Hash tables configured (established 4096 bind
> 4096)
> > [ 0.199218] TCP: reno registered
> > [ 0.199218] UDP hash table entries: 256 (order: 0, 4096 bytes)
> > [ 0.199218] UDP-Lite hash table entries: 256 (order: 0, 4096
> bytes)
> > [ 0.199218] NET: Registered protocol family 1
> > [ 0.199218] RPC: Registered named UNIX socket transport module.
> > [ 0.199218] RPC: Registered udp transport module.
> > [ 0.199218] RPC: Registered tcp transport module.
> > [ 0.199218] RPC: Registered tcp NFSv4.1 backchannel transport
> module.
> > [ 0.207031] NFS: Registering the id_resolver key type
> > [ 0.207031] Key type id_resolver registered
> > [ 0.207031] Key type id_legacy registered
> > [ 0.207031] jffs2: version 2.2. (NAND) �© 2001-2006 Red Hat,
> Inc.
> > [ 0.207031] msgmni has been set to 242
> > [ 0.210937] io scheduler noop registered (default)
> > [ 0.218750] fffff200.serial: ttyS0 at MMIO 0xfffff200 (irq = 18)
> is a ATMEL_S
> > ERIAL
> > [ 0.609375] console [ttyS0] enabled
> > [ 0.613281] f801c000.serial: ttyS1 at MMIO 0xf801c000 (irq = 22)
> is a ATMEL_S
> > ERIAL
> > [ 0.632812] brd: module loaded
> > [ 0.652343] loop: module loaded
> > [ 0.667968] atmel_nand: Use On Flash BBT
> > [ 0.671875] atmel_nand 40000000.nand: No DMA support for NAND
> access.
> > [ 0.675781] ONFI param page 0 valid
> > [ 0.679687] ONFI flash detected
> > [ 0.683593] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xda
> (Micron MT29F2G
> > 08AAD), page size: 2048, OOB size: 64
> > [ 0.695312] atmel_nand 40000000.nand: Initialize PMECC params,
> cap: 2, sector
> > : 512
> > [ 0.703125] Bad block table found at page 131008, version 0x01
> > [ 0.707031] Bad block table found at page 130944, version 0x01
> > [ 0.714843] nand_read_bbt: bad block at 0x000009380000
> > [ 0.718750] 2 cmdlinepart partitions found on MTD device
> atmel_nand
> > [ 0.726562] Creating 2 MTD partitions on "atmel_nand":
> > [ 0.730468] 0x000000000000-0x000000800000 :
> "bootstrap/uboot/kernel"
> > [ 0.742187] 0x000000800000-0x000010000000 : "rootfs"
> > [ 0.757812] macb f802c000.ethernet (unregistered net_device):
> invalid hw addr
> > ess, using random
> > [ 0.773437] libphy: MACB_mii_bus: probed
> > [ 0.777343] macb f802c000.ethernet eth0: Cadence MACB at
> 0xf802c000 irq 23 (c
> > a:2c:e6:c3:59:8f)
> > [ 0.785156] macb f802c000.ethernet eth0: attached PHY driver
> [Davicom DM9161A
> > ] (mii_bus:phy_addr=f802c000.etherne:00, irq=-1)
> > [ 0.796875] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI)
> Driver
> > [ 0.804687] atmel-ehci 700000.ehci: Atmel EHCI UHP HS
> > [ 0.808593] atmel-ehci 700000.ehci: new USB bus registered,
> assigned bus numb
> > er 1
> > [ 0.816406] atmel-ehci 700000.ehci: irq 28, io mem 0x00700000
> > [ 0.835937] atmel-ehci 700000.ehci: USB 2.0 started, EHCI 1.00
> > [ 0.839843] usb usb1: New USB device found, idVendor=1d6b,
> idProduct=0002
> > [ 0.847656] usb usb1: New USB device strings: Mfr=3, Product=2,
> SerialNumber=
> > 1
> > [ 0.855468] usb usb1: Product: Atmel EHCI UHP HS
> > [ 0.859375] usb usb1: Manufacturer: Linux 3.7.0-rc8-armv5-x0.16
> ehci_hcd
> > [ 0.867187] usb usb1: SerialNumber: 700000.ehci
> > [ 0.871093] hub 1-0:1.0: USB hub found
> > [ 0.875000] hub 1-0:1.0: 3 ports detected
> > [ 0.878906] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> > [ 0.886718] at91_ohci 600000.ohci: AT91 OHCI
> > [ 0.890625] at91_ohci 600000.ohci: new USB bus registered,
> assigned bus numbe
> > r 2
> > [ 0.898437] at91_ohci 600000.ohci: irq 28, io mem 0x00600000
> > [ 0.964843] usb usb2: New USB device found, idVendor=1d6b,
> idProduct=0001
> > [ 0.968750] usb usb2: New USB device strings: Mfr=3, Product=2,
> SerialNumber=
> > 1
> > [ 0.976562] usb usb2: Product: AT91 OHCI
> > [ 0.980468] usb usb2: Manufacturer: Linux 3.7.0-rc8-armv5-x0.16
> ohci_hcd
> > [ 0.988281] usb usb2: SerialNumber: at91
> > [ 0.992187] hub 2-0:1.0: USB hub found
> > [ 0.996093] hub 2-0:1.0: 2 ports detected
> > [ 1.003906] usbcore: registered new interface driver cdc_acm
> > [ 1.007812] cdc_acm: USB Abstract Control Model driver for USB
> modems and ISD
> > N adapters
> > [ 1.019531] usbcore: registered new interface driver uas
> > [ 1.023437] Initializing USB Mass Storage driver...
> > [ 1.027343] usbcore: registered new interface driver usb-storage
> > [ 1.035156] USB Mass Storage support registered.
> > [ 1.039062] usbcore: registered new interface driver ums-alauda
> > [ 1.046875] usbcore: registered new interface driver ums-cypress
> > [ 1.054687] usbcore: registered new interface driver ums-datafab
> > [ 1.058593] usbcore: registered new interface driver ums_eneub6250
> > [ 1.066406] usbcore: registered new interface driver ums-freecom
> > [ 1.074218] usbcore: registered new interface driver ums-isd200
> > [ 1.078125] usbcore: registered new interface driver ums-jumpshot
> > [ 1.085937] usbcore: registered new interface driver ums-karma
> > [ 1.093750] usbcore: registered new interface driver ums-onetouch
> > [ 1.097656] usbcore: registered new interface driver ums-realtek
> > [ 1.105468] usbcore: registered new interface driver ums-sddr09
> > [ 1.113281] usbcore: registered new interface driver ums-sddr55
> > [ 1.117187] usbcore: registered new interface driver ums-usbat
> > [ 1.125000] usbcore: registered new interface driver usbserial
> > [ 1.132812] usbcore: registered new interface driver
> usbserial_generic
> > [ 1.140625] usbserial: USB Serial support registered for generic
> > [ 1.144531] usbcore: registered new interface driver ftdi_sio
> > [ 1.152343] usbserial: USB Serial support registered for FTDI USB
> Serial Devi
> > ce
> > [ 1.160156] usbcore: registered new interface driver pl2303
> > [ 1.167968] usbserial: USB Serial support registered for pl2303
> > [ 1.171875] mousedev: PS/2 mouse device common for all mice
> > [ 1.179687] i2c /dev entries driver
> > [ 1.191406] usbcore: registered new interface driver usbhid
> > [ 1.199218] usbhid: USB HID core driver
> > [ 1.207031] usb 1-2: new high-speed USB device number 2 using
> atmel-ehci
> > [ 1.214843] TCP: cubic registered
> > [ 1.218750] NET: Registered protocol family 10
> > [ 1.222656] sit: IPv6 over IPv4 tunneling driver
> > [ 1.230468] NET: Registered protocol family 17
> > [ 1.234375] Key type dns_resolver registered
> > [ 1.246093] UBI: attaching mtd1 to ubi0
> > [ 1.253906] atmel_nand 40000000.nand: PMECC: Too many errors
> > [ 1.261718] UBI warning: ubi_io_read: error -5 while reading 64
> bytes from PE
> > B 10:0, read only 0 bytes, retry
> > [ 1.269531] atmel_nand 40000000.nand: PMECC: Too many errors
> > [ 1.277343] UBI warning: ubi_io_read: error -5 while reading 64
> bytes from PE
> > B 10:0, read only 0 bytes, retry
> > [ 1.285156] atmel_nand 40000000.nand: PMECC: Too many errors
> > [ 1.292968] UBI warning: ubi_io_read: error -5 while reading 64
> bytes from PE
> > B 10:0, read only 0 bytes, retry
> > [ 1.304687] atmel_nand 40000000.nand: PMECC: Too many errors
> > [ 1.308593] UBI error: ubi_io_read: error -5 while reading 64
> bytes from PEB
> > 10:0, read 0 bytes
> > [ 1.316406] [<c000d2bc>] (unwind_backtrace+0x0/0xe0) from
> [<c0243a10>] (ubi_i
> > o_read+0x1d4/0x2a4)
> > [ 1.328125] [<c0243a10>] (ubi_io_read+0x1d4/0x2a4) from
> [<c0243d20>] (ubi_io_
> > read_ec_hdr+0x68/0x214)
> > [ 1.335937] [<c0243d20>] (ubi_io_read_ec_hdr+0x68/0x214) from
> [<c024804c>] (u
> > bi_attach+0x104/0x13e4)
> > [ 1.343750] [<c024804c>] (ubi_attach+0x104/0x13e4) from
> [<c023e514>] (ubi_att
> > ach_mtd_dev+0x5a4/0xb94)
> > [ 1.355468] [<c023e514>] (ubi_attach_mtd_dev+0x5a4/0xb94) from
> [<c04d09dc>] (
> > ubi_init+0x1d8/0x2d8)
> > [ 1.363281] [<c04d09dc>] (ubi_init+0x1d8/0x2d8) from [<c0008860>]
> (do_one_ini
> > tcall+0x90/0x168)
> > [ 1.371093] [<c0008860>] (do_one_initcall+0x90/0x168) from
> [<c03686a4>] (kern
> > el_init+0xe8/0x2a0)
> > [ 1.378906] [<c03686a4>] (kernel_init+0xe8/0x2a0) from
> [<c00093f0>] (ret_from
> > _fork+0x14/0x24)
> > [ 1.386718] UBI error: ubi_attach_mtd_dev: failed to attach mtd1,
> error -5
> > [ 1.394531] UBI error: ubi_init: cannot attach mtd1
> > [ 1.402343] drivers/rtc/hctosys.c: unable to open rtc device
> (rtc0)
> > [ 1.410156] UBIFS error (pid 1): ubifs_mount: cannot open
> "ubi0:rootfs", erro
> > r -19
> > [ 1.417968] VFS: Cannot open root device "ubi0:rootfs" or unknown-
> block(0,0):
> > error -19
> > [ 1.425781] Please append a correct "root=" boot option; here are
> the availab
> > le partitions:
> > [ 1.433593] 1f00 8192 mtdblock0 (driver?)
> > [ 1.437500] 1f01 253952 mtdblock1 (driver?)
> > [ 1.441406] Kernel panic - not syncing: VFS: Unable to mount root
> fs on unkno
> > wn-block(0,0)
> >
> >
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