at91sam9261-ubifs成功移植

based on: linux-3.6.9, 128M Nand, busybox-1.20.2
ubi命令来自busbox。
如下：
然后，需要在文件系统中vi etc/init.d/rcS
加入如下：
/sbin/ubiattach /dev/ubi_ctrl -m 1
/bin/mount -t ubifs /dev/ubi0_0 /media/

reboot
u-boot,启动参数：
setenv bootargs ubi.mtd=1 root=ubi0:rootfs rootfstype=ubifs init=/linuxrc console=ttyS0,115200
内核成功启动。
ubifs移植成功以后，以后就可以抛弃yaffs2了。半个月的时间，终于把自制fs和ubifs移植到at91sam926x上，心情大好。

## Booting kernel from Legacy Image at 20400000 ...

   Image Name:   Linux-3.6.9

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    1990904 Bytes = 1.9 MiB

   Load Address: 20008000

   Entry Point:  20008000

   Verifying Checksum ... OK

   Loading Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Booting Linux on physical CPU 0

Initializing cgroup subsys cpu

……

atmel_usart.0: ttyS0 at MMIO 0xfffff200 (irq = 17) is a ATMEL_SERIAL

console [ttyS0] enabled

atmel_usart.1: ttyS1 at MMIO 0xfffb0000 (irq = 22) is a ATMEL_SERIAL

atmel_usart.2: ttyS2 at MMIO 0xfffb4000 (irq = 23) is a ATMEL_SERIAL

……

Creating 2 MTD partitions on "atmel_nand":

0x000000000000-0x000000040000 : "Partition 1"

0x000000040000-0x000008000000 : "Partition 2"

UBI: attaching mtd1 to ubi0

UBI: physical eraseblock size:   131072 bytes (128 KiB)

UBI: logical eraseblock size:    129024 bytes

UBI: smallest flash I/O unit:    2048

UBI: sub-page size:              512

UBI: VID header offset:          512 (aligned 512)

UBI: data offset:                2048

UBI: max. sequence number:       58

UBI: attached mtd1 to ubi0

UBI: MTD device name:            "Partition 2"

UBI: MTD device size:            127 MiB

UBI: number of good PEBs:        915

UBI: number of bad PEBs:         107

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:             39

UBI: total number of reserved PEBs: 876

UBI: number of PEBs reserved for bad PEB handling: 18

UBI: max/mean erase counter: 2/1

UBI: image sequence number:  1228014130

UBI: background thread "ubi_bgt0d" started, PID 855

……

ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver

at91_ohci at91_ohci: AT91 OHCI

at91_ohci at91_ohci: new USB bus registered, assigned bus number 1

at91_ohci at91_ohci: irq 36, io mem 0x00500000

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 2 ports detected

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

rtc-at91sam9 rtc-at91sam9.0: rtc core: registered rtc-at91sam9 as rtc0

i2c /dev entries driver

at91sam9_wdt: sorry, watchdog is disabled

at91_wdt: probe of at91_wdt failed with error -5

softdog: Software Watchdog Timer: 0.08 initialized. soft_noboot=0 soft_margin=60 sec soft_panic=0 (nowayout=0)

……

UBIFS: mounted UBI device 0, volume 0, name "rootfs"

UBIFS: file system size:   108767232 bytes (106218 KiB, 103 MiB, 843 LEBs)

UBIFS: journal size:       5419008 bytes (5292 KiB, 5 MiB, 42 LEBs)

UBIFS: media format:       w4/r0 (latest is w4/r0)

UBIFS: default compressor: lzo

UBIFS: reserved for root:  4952683 bytes (4836 KiB)

VFS: Mounted root (ubifs filesystem) on device 0:8.

Freeing init memory: 120K

running /etc/init.d/rcS

starting udevd...

cannot open /dev/null

udevd (898): /proc/898/oom_adj is deprecated, please use /proc/898/oom_score_adj instead.

/etc/init.d/rcS: line 21: /sbin/ubiattach: not found

dm9000 dm9000.0: eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1

Please press Enter to activate this console.