U-boot分区及内核更新的实现

一 问题提出

1）在没有网络的环境下可以使用U盘等存储介质来更新内核

2）可以通过网络远程更新内核

3）支持U-Boot对nor falsh ，nand flash的分区

4） U-Boot下对JFFS2文件系统的支持。

二 问题解决

通过实现U-boot使用JFFS2文件系统加载内核的方法解决上述内核更新及分区问题

 

三 问题实现（u-boot-2009.01）

添加对JFFS2文件系统支持的宏定义

./include/configs/ads5121.h

#define CONFIG_CMD_JFFS2

#define CONFIG_JFFS2_CMDLINE

#define CONFIG_JFFS2_NAND

 

//定义默认的分区信息(最好和内核定义的MTD分区信息一致)

#define MTDIDS_DEFAULT         "nor0=ads5121-flash,nand0=ads5121-nand"

#define MTDPARTS_DEFAULT       "mtdparts=ads5121-flash:256k(protected)," /

                                        "59904k(filesystem),"/

                                        "4m(kernel)," /

                                       "256k(device-tree)," /

                                        "1m(u-boot);" /

                                "ads5121-nand:128m(jffs2)," /

                               "-(data)"

四 U-Boot分区及更新操作步骤

CPU:  MPC5121e rev. 2.0, Core e300c4at 400 MHz, CSB at 200 MHz

Board: ADS5121 rev. 0x0400 (CPLD rev. 0x06)

I2C:   ready

DRAM: 512 MB

FLASH: 64 MB

NAND: 1024 MiB

PCI:  Bus Dev VenId DevId Class Int

Net:  FEC ETHERNET

IDE:  Bus 0: not available 

 

Type "run flash_nfs" to mountroot filesystem over NFS

 

Hit any key to stop autoboot:  0

1 分区操作

1）手动设置分区信息

setenv mtdids nand0=ads5121-nand

setenv mtdparts mtdparts=ads5121-nand:128m(jffs2 filesystem),4m(kernel),1m(device tree),-(data)

=> mtdparts

no such device nor0

 

device nand0 <ads5121-nand>, # parts= 4

 #:name                        size            offset          mask_flags

 0:jffs2 filesystem    0x08000000      0x00000000      0

 1:kernel              0x00400000      0x08000000      0

 2:device tree         0x00100000      0x08400000      0

 3:data                0x17b00000      0x08500000      0

 

active partition: nand0,0 - (jffs2filesystem) 0x08000000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts:mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

 

2）设置默认的分区信息

=> mtdparts default

=> mtdparts

 

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2:kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

 

device nand0 <ads5121-nand>, # parts= 2

 #:name                        size            offset          mask_flags

 0:jffs2               0x08000000      0x00000000      0

 1: data                0x18000000      0x08000000      0

 

active partition: nor0,0 - (protected)0x00040000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts:mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

=>

 

3）删除分区：

=> mtd del nand0,1

=> mtdparts

 

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2:kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

 

device nand0 <ads5121-nand>, # parts= 1

 #:name                        size            offset          mask_flags

 0: jffs2               0x08000000      0x00000000      0

 

active partition: nor0,0 - (protected)0x00040000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts: mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

=>

4）添加一个分区

=> mtdparts add nand00x18000000@0x08000000 data

=> mtdparts

 

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2:kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

 

device nand0 <ads5121-nand>, # parts= 2

 #:name                        size            offset          mask_flags

 0: jffs2               0x08000000      0x00000000      0

 1: data                0x18000000      0x08000000      0

 

active partition: nor0,0 - (protected)0x00040000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts:mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

=>

5）修改当前活动分区（如果要操作某个分区，就需要将其修改为当前的活动分区）

=> chpart nand0,0

partition changed to nand0,0

=> mtdparts

 

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2:kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

 

device nand0 <ads5121-nand>, # parts= 2

 #:name                        size            offset          mask_flags

 0:jffs2               0x08000000      0x00000000      0

 1:data                0x18000000      0x08000000      0

 

activepartition: nand0,0 - (jffs2) 0x08000000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts:mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

=>

2 更新内核

1）下载新内核到根文件系统

Linux内核将NAND Flash设置了2个分区作为MTD设备：

[root@root /]# cat /proc/mtd

dev:   size   erasesize  name

mtd0: 08000000 00020000 "nand0,128M"

mtd1: 38000000 00020000 "nand0,896M"

分区0:128M，分区1:896M，分区0是用作存放jffs2等文件系统，分区1作为其他存储用途。我们可以通过网络或者U盘等方法将需要更新的内核下载到linux的根文件系统中：

[root@root /]# ll

drwxr-xr-x    2 root     root            0 Oct 23 09:14 Settings

drwxr-xr-x    2 root     root            0 Nov 25 08:56 bin

drwxr-xr-x    2 root     root            0 Oct 23 08:07 boot

drwxr-xr-x    9 root     root       12720 Nov 26 13:41 dev

drwxr-xr-x    8 root     root            0 Nov 26 13:38 etc

drwxr-xr-x    4 root     root            0 Oct 26 10:03 home

drwxr-xr-x    4 root     root            0 Oct 23 08:07 lib

lrwxrwxrwx    1 root     root           11 Nov 25 08:56 linuxrc -> bin/busybox

drwxr-xr-x    7 root     root            0 Oct 23 08:07 mnt

drwxr-xr-x    3 root     root            0 Oct 23 08:07 opt

dr-xr-xr-x   37 root     root            0 Jan  1  1970proc

drwxr-xr-x    2 root     root            0 Oct 23 08:07 root

drwxr-xr-x    2 root     root            0 Nov 25 08:56 sbin

drwxr-xr-x   11 root     root            0 Jan  1  1970sys

drwxr-xr-x    2 root     root         4096 Jan  1  1970tmp

-rwxrwxrwx    1 root     root     1702205 Nov 17 02:43 uImage_ori

-rwxr-xr-x    1 root     root     1644439 Nov 26 13:41uImage_update

drwxr-xr-x   11 root     root            0 Nov 13 06:23 usr

drwxr-xr-x   11 root     root          220 Oct 23 08:07 var

[root@root /]#

例如我们要更新才新内核文件为：uImage_update

2）设置激活分区

进入到U-Boot：

U-Boot 2009.03 (11月 25 2009 - 21:22:45) MPC512X

 

CPU:  MPC5121e rev. 2.0, Core e300c4at 400 MHz, CSB at 200 MHz

Board: ADS5121 rev. 0x0400 (CPLD rev. 0x06)

I2C:   ready

DRAM: 512 MB

FLASH: 64 MB

NAND: 1024 MiB

PCI:  Bus Dev VenId DevId Class Int

Net:  FEC ETHERNET

IDE:  Bus 0: not available 

 

Type "run flash_nfs" to mountroot filesystem over NFS

 

Hit any key to stop autoboot:  0

=> mtdparts default

=> mtdparts

 

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2:kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

 

（注意我们的NANDFlash分区和内核的MTD分区是保持一致的。）

devicenand0 <ads5121-nand>, # parts = 2

 #: name                        size            offset          mask_flags

 0: jffs2               0x08000000      0x00000000      0

 1: data                0x18000000      0x08000000      0

 

active partition: nor0,0 - (protected)0x00040000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts:mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

=> ls

Scanning JFFS2 FS:  done.

修改当前的活动分区，因为我们要操作的是nand0 的第一个分区（存放有根文件系统同时包含有我们需要更新的内核uImage_update。

=> chpart nand0,0

partition changed to nand0,0

=> mtdparts

 

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2:kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

 

device nand0 <ads5121-nand>, # parts= 2

 #:name                        size            offset          mask_flags

 0:jffs2               0x08000000      0x00000000      0

 1:data                0x18000000      0x08000000      0

 

activepartition: nand0,0 - (jffs2) 0x08000000 @ 0x00000000

 

defaults:

mtdids : nor0=ads5121-flash,nand0=ads5121-nand

mtdparts:mtdparts=ads5121-flash:256k(protected),59904k(filesystem),4m(kernel),256k(device-tree),1m(u-boot);ads5121-nand:128m(jffs2),-(data)

=>

3）下载更新内核

查看NAND Flash第一分区上存放的JFFS2文件系统内容：

=> ls

Scanning JFFS2 FS:.......................... done.

 drwxr-xr-x        0 Fri Oct 23 09:14:40 2009 Settings

 drwxr-xr-x        0 Fri Oct 23 08:07:46 2009 bin

 drwxr-xr-x        0 Fri Oct 23 08:07:50 2009 boot

 drwxr-xr-x        0 Fri Oct 23 08:08:34 2009 dev

 drwxr-xr-x        0 Mon Oct 26 10:12:52 2009 etc

 drwxr-xr-x        0 Mon Oct 26 09:09:47 2009 home

 drwxr-xr-x        0 Fri Oct 23 08:07:49 2009 lib

 lrwxrwxrwx       11 Wed Nov 25 08:56:18 2009 linuxrc-> bin/busybox

 drwxr-xr-x        0 Fri Oct 23 08:07:50 2009 mnt

 drwxr-xr-x        0 Fri Oct 23 08:07:46 2009 opt

 drwxr-xr-x        0 Fri Oct 23 08:07:46 2009 proc

 drwxr-xr-x        0 Fri Oct 23 08:07:50 2009 root

 drwxr-xr-x        0 Fri Oct 23 08:07:50 2009 sbin

 drwxr-xr-x        0 Fri Oct 23 08:07:50 2009 sys

 drwxr-xr-x        0 Mon Oct 26 10:17:02 2009 tmp

 -rwxrwxrwx 1702205 Tue Nov 17 02:43:01 2009 uImage_ori

 drwxr-xr-x        0 Fri Oct 23 08:07:49 2009 usr

 drwxr-xr-x        0 Fri Oct 23 08:07:50 2009 var

 -rwxr-xr-x 1644439 Thu Nov 26 13:41:38 2009 uimage

 -rwxr-xr-x 1644439 Thu Nov 26 13:41:38 2009 uImage

 -rwxr-xr-x 1644439 Thu Nov 26 13:41:38 2009 uImage_update

=>

=> fsload0x400000 uImage_update

### JFFS2 loading 'uImage_update' to 0x400000

### JFFS2 load complete: 1644439 bytesloaded to 0x400000

4）烧写新内核到nor flash

查看nor flash分区：

device nor0 <ads5121-flash>, # parts= 5

 #:name                        size            offset          mask_flags

 0:protected           0x00040000      0x00000000      0

 1:filesystem          0x03a80000      0x00040000      0

 2: kernel              0x00400000      0x03ac0000      0

 3:device-tree         0x00040000      0x03ec0000      0

 4:u-boot              0x00100000      0x03f00000      0

我们将分区2作为存放内核，可以算出物理基址为：ffac0000

=> erase ffac0000 ffcfffff

 

......... done

Erased 9 sectors

=> cp.b 0x400000  0xffac0000 0x200000

Copy to Flash... done

5）从内存中启动新下载的内核

=> bootm 0x400000 - 0xffec0000

## Bootingkernel from Legacy Image at 00400000 ...

  Image Name:   Linux-2.6.24.6

  Created:      2009-11-26   5:36:51 UTC

  Image Type:   PowerPC Linux KernelImage (gzip compressed)

  Data Size:    1644375 Bytes =  1.6 MB

  Load Address: 00000000

  Entry Point:  00000000

  Verifying Checksum ... OK

## Flattened Device Tree blob at ffec0000

  Booting using the fdt blob at 0xffec0000

  Uncompressing Kernel Image ... OK

  Loading Device Tree to 007fb000, end 007ffa2f ... OK

[   0.000000] Using MPC5121 ADS machine description

[   0.000000] Linux version 2.6.24.6([e-mail]) (gcc version 4.1.2) #12 PREEMPT Thu Nov 2600:36:46 EST 2009

[   0.000000] MPC5121 ADS board from Freescale Semiconductor

[   0.000000] preallocate_diu_videomemory: diu_size=5242880

[   0.000000] preallocate_diu_videomemory: diu_mem=c0a00000

[   0.000000] Found MPC512x PCI host bridge at 0x0000000080008500. Firmwarebus number: 0->0

[   0.000000] Zone PFN ranges:

[   0.000000]   DMA             0 ->   131072

[   0.000000]   Normal     131072 ->   131072

[   0.000000] Movable zone start PFN for each node

[   0.000000] early_node_map[1] active PFN ranges

[   0.000000]     0:        0 ->   131072

[   0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048

[   0.000000] Kernel command line: root=/dev/mtdblock0 rw rootfstype=jffs2console=ttyPSC0,115200

[   0.000000] IPIC (128 IRQ sources) at fcff7c00

[   0.000000] PID hash table entries: 2048 (order: 11, 8192 bytes)

[ 1460.288919] clocksource: timebasemult[5000002] shift[22] registered

[ 1460.289062] Console: colour dummy device80x25

[ 1460.289166] console [ttyPSC0] enabled

[ 1460.397027] Dentry cache hash tableentries: 65536 (order: 6, 262144 bytes)

[ 1460.406733] Inode-cache hash tableentries: 32768 (order: 5, 131072 bytes)

[ 1460.465862] Memory: 508544k/524288kavailable (3276k kernel code, 15536k reserved, 148k data, 369k bss, 184k init)

[ 1460.476258] SLUB: Genslabs=9,HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1

[ 1460.563885] Mount-cache hash tableentries: 512

[ 1460.570856] net_namespace: 64 bytes

[ 1460.576217] NET: Registered protocolfamily 16

[ 1460.593330] Reserved irq 66(0x42) forMBX

[ 1460.599847] Could not initialize clkspdif_txclk without a calc routine

[ 1460.606549] Could not initialize clkspdif_rxclk without a calc routine

[ 1460.613459] mapped ioctl to e1002000 andgpioctl to e1004100

[ 1460.619119] PCI: Probing PCI hardware

[ 1460.631440] SCSI subsystem initialized

[ 1460.636450] usbcore: registered newinterface driver usbfs

[ 1460.642439] usbcore: registered newinterface driver hub

[ 1460.648065] usbcore: registered newdevice driver usb

[ 1460.668033] NET: Registered protocolfamily 2

[ 1460.672333] Time: timebase clocksourcehas been installed.

[ 1460.716619] IP route cache hash tableentries: 16384 (order: 4, 65536 bytes)

[ 1460.725179] TCP established hash tableentries: 65536 (order: 7, 524288 bytes)

[ 1460.736154] TCP bind hash table entries:65536 (order: 6, 262144 bytes)

[ 1460.744924] TCP: Hash tables configured(established 65536 bind 65536)

[ 1460.751398] TCP reno registered

[ 1460.766726] JFFS2 version 2.2. (NAND) ?2001-2006 Red Hat, Inc.

[ 1460.773027] io scheduler noop registered

[ 1460.776906] io scheduler anticipatoryregistered (default)

[ 1460.782367] io scheduler deadlineregistered

[ 1460.786671] io scheduler cfq registered

[ 1460.833534] Console: switching to colourframe buffer device 128x48

[ 1460.875966] fb0: Panel0 fb deviceregistered successfully.

[ 1460.881944] fb1: Panel1 AOI0 fb deviceregistered successfully.

[ 1460.888286] fb2: Panel1 AOI1 fb deviceregistered successfully.

[ 1460.894657] fb3: Panel2 AOI0 fb deviceregistered successfully.

[ 1460.901024] fb4: Panel2 AOI1 fb deviceregistered successfully.

[ 1460.907066] FSL_DIU_FB: registed FBdevice driver!

[ 1461.157873] Serial: MPC52xx PSC UARTdriver

[ 1461.162508] 80011300.serial: ttyPSC0 atMMIO 0x80011300 (irq = 40) is a MPC52xx PSC

[ 1461.171261] 80011400.serial: ttyPSC1 atMMIO 0x80011400 (irq = 40) is a MPC52xx PSC

[ 1461.180919] RAMDISK driver initialized:4 RAM disks of 16384K size 1024 blocksize

[ 1461.189583] fsl-mscan initializing

[ 1461.194575] fsl-mscan fsl-mscan.0: probeport 0xE1062300 done, clk rate:100000000

[ 1461.203712] fsl-mscan fsl-mscan.1: probeport 0xE1064380 done, clk rate:100000000

[ 1461.213190] eth0: fs_enet:00:ec:00:12:00:01

[ 1461.218480] FEC MII Bus: probed

[ 1461.221656] Uniform Multi-Platform E-IDEdriver Revision: 7.00alpha2

[ 1461.227990] ide: Assuming 33MHz systembus speed for PIO modes; override with idebus=xx

[ 1461.237336] Driver 'sd' needs updating -please use bus_type methods

[ 1461.244449] MPC5121 MTD nand Driver 0.2

[ 1461.249116] NAND device: ManufacturerID: 0xad, Chip ID: 0xdc (Hynix NAND 512MiB 3,3V 8-bit)

[ 1461.257574] 2 NAND chips detected

[ 1461.263636] mpc5121r2nfc 40000000.nfc:Using OF partition info

[ 1461.269627] Creating 2 MTD partitions on"NAND":

[ 1461.274209] 0x00000000-0x08000000 :"nand0,128M"

[ 1461.279780] 0x08000000-0x40000000 :"nand0,896M"

[ 1461.287204] fsl-ehci fsl-ehci.0:Freescale On-Chip EHCI Host Controller

[ 1461.294203] fsl-ehci fsl-ehci.0: new USBbus registered, assigned bus number 1

[ 1461.324401] fsl-ehci fsl-ehci.0: irq 44,io mem 0x80004000

[ 1461.340366] fsl-ehci fsl-ehci.0: USB 2.0started, EHCI 1.00, driver 10 Dec 2004

[ 1461.349065] usb usb1: configuration #1chosen from 1 choice

[ 1461.355003] hub 1-0:1.0: USB hub found

[ 1461.358793] hub 1-0:1.0: 1 port detected

[ 1461.465293] Initializing USB MassStorage driver...

[ 1461.704388] usb 1-1: new high speed USBdevice using fsl-ehci and address 2

[ 1461.851809] usb 1-1: configuration #1chosen from 1 choice

[ 1461.858825] scsi0 : SCSI emulation forUSB Mass Storage devices

[ 1461.865316] usbcore: registered newinterface driver usb-storage

[ 1461.871549] USB Mass Storage supportregistered.

[ 1461.876659] mice: PS/2 mouse devicecommon for all mice

[ 1461.882754] mpc5121-rtc 80000a00.rtc: rtc core: registeredmpc5121-rtc as rtc0

[ 1461.890173] i2c /dev entries driver

[ 1461.900160] Freescale(R) MPC5121 DMAEngine found, 64 channels

[ 1462.008639] fsldma: Self-test copysuccessfully

[ 1462.013770] usbcore: registered newinterface driver usbhid

[ 1462.019330]drivers/hid/usbhid/hid-core.c: v2.6:USB HID core driver

[ 1462.025844] TCP cubic registered

[ 1462.029247] NET: Registered protocolfamily 1

[ 1462.033645] NET: Registered protocolfamily 17

[ 1462.038040] can: controller area networkcore (rev 20071116 abi 8)

[ 1462.044236] NET: Registered protocolfamily 29

[ 1462.048897] can: raw protocol (rev20071116)

[ 1462.053487] RPC: Registered udp transportmodule.

[ 1462.058152] RPC: Registered tcptransport module.

[ 1462.063233] mpc5121-rtc 80000a00.rtc: setting system clock to2009-11-26 14:09:26 UTC (1259244566)

[ 1462.073040] JFFS2 doesn't use OOB.

[ 1472.697943] VFS: Mounted root (jffs2filesystem).

[ 1472.702763] Freeing unused kernelmemory: 184k init

Mounting /proc and /sys

Starting the hotplug events dispatcherudevd

Synthesizing initial hotplug events

Setting the hostname to root

Mounting filesystems

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

Starting syslogd and klogd

Running sysctl

Setting up networking on loopback device:

Setting up networking on eth0:

Starting inetd:

[root@root /]#

[root@root /]# ls

Settings       etc            mnt            sbin           uImage_update

bin            home           opt            sys            usr

boot           lib            proc           tmp            var

dev            linuxrc        root           uImage_ori

从内核的打印信息可以看出我们已经成功的更新了内核。

 

6）从nor flash中启动新烧写的内核

U-Boot 2009.03 (11月 25 2009 - 21:22:45) MPC512X

 

CPU:  MPC5121e rev. 2.0, Core e300c4at 400 MHz, CSB at 200 MHz

Board: ADS5121 rev. 0x0400 (CPLD rev. 0x06)

I2C:   ready

DRAM: 512 MB

FLASH: 64 MB

NAND: 1024 MiB

PCI:  Bus Dev VenId DevId Class Int

Net:  FEC ETHERNET

IDE:  Bus 0: not available 

 

Type "run flash_nfs" to mountroot filesystem over NFS

 

Hit any key to stop autoboot:  0

## Bootingkernel from Legacy Image at ffac0000 ...

  Image Name:   Linux-2.6.24.6

  Created:      2009-11-26   5:36:51 UTC

  Image Type:   PowerPC Linux KernelImage (gzip compressed)

  Data Size:    1644375 Bytes =  1.6 MB

  Load Address: 00000000

  Entry Point:  00000000

  Verifying Checksum ... OK

## Flattened Device Tree blob at ffec0000

  Booting using the fdt blob at 0xffec0000

  Uncompressing Kernel Image ... OK

  Loading Device Tree to 007fb000, end 007ffa2f ... OK

[   0.000000] Using MPC5121 ADS machine description

[   0.000000] Linux version 2.6.24.6([e-mail]) (gcc version 4.1.2) #12 PREEMPT Thu Nov 2600:36:46 EST 2009

[   0.000000] MPC5121 ADS board from Freescale Semiconductor

[   0.000000] preallocate_diu_videomemory: diu_size=5242880

[   0.000000] preallocate_diu_videomemory: diu_mem=c0a00000

[   0.000000] Found MPC512x PCI host bridge at 0x0000000080008500. Firmwarebus number: 0->0

[   0.000000] Zone PFN ranges:

[   0.000000]   DMA             0 ->   131072

[   0.000000]   Normal     131072 ->   131072

[   0.000000] Movable zone start PFN for each node

[   0.000000] early_node_map[1] active PFN ranges

[   0.000000]     0:        0 ->   131072

[   0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048

[   0.000000] Kernel command line: root=/dev/mtdblock0 rw rootfstype=jffs2console=ttyPSC0,115200

[   0.000000] IPIC (128 IRQ sources) at fcff7c00

[   0.000000] PID hash table entries: 2048 (order: 11, 8192 bytes)

[   0.000010] clocksource: timebase mult[5000002] shift[22] registered

[   0.000154] Console: colour dummy device 80x25

[   0.000256] console [ttyPSC0] enabled

[   0.108108] Dentry cache hash table entries: 65536 (order: 6, 262144bytes)

[   0.117851] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)

[   0.176872] Memory: 508544k/524288k available (3276k kernel code, 15536kreserved, 148k data, 369k bss, 184k init)

[   0.187255] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, CPUs=1,Nodes=1

[   0.274882] Mount-cache hash table entries: 512

[   0.281868] net_namespace: 64 bytes

[   0.287198] NET: Registered protocol family 16

[   0.304306] Reserved irq 66(0x42) for MBX

[   0.310816] Could not initialize clk spdif_txclk without a calc routine

[   0.317521] Could not initialize clk spdif_rxclk without a calc routine

[   0.324434] mapped ioctl to e1002000 and gpioctl to e1004100

[   0.330093] PCI: Probing PCI hardware

[   0.342369] SCSI subsystem initialized

[   0.347365] usbcore: registered new interface driver usbfs

[   0.353359] usbcore: registered new interface driver hub

[   0.358990] usbcore: registered new device driver usb

[   0.378997] NET: Registered protocol family 2

[   0.383295] Time: timebase clocksource has been installed.

[   0.427587] IP route cache hash table entries: 16384 (order: 4, 65536bytes)

[   0.436137] TCP established hash table entries: 65536 (order: 7, 524288bytes)

[   0.447132] TCP bind hash table entries: 65536 (order: 6, 262144 bytes)

[   0.455888] TCP: Hash tables configured (established 65536 bind 65536)

[   0.462362] TCP renoregistered

[   0.477663] JFFS2 version 2.2. (NAND) ? 2001-2006 Red Hat, Inc.

[   0.483964] io scheduler noop registered

[   0.487844] io scheduler anticipatory registered (default)

[   0.493305] io scheduler deadline registered

[   0.497606] io scheduler cfq registered

[   0.544454] Console: switching to colour frame buffer device 128x48

[   0.586907] fb0: Panel0 fb device registered successfully.

[   0.592885] fb1: Panel1 AOI0 fb device registered successfully.

[   0.599232] fb2: Panel1 AOI1 fb device registered successfully.

[   0.605598] fb3: Panel2 AOI0 fb device registered successfully.

[   0.611961] fb4: Panel2 AOI1 fb device registered successfully.

[   0.618004] FSL_DIU_FB: registed FB device driver!

[   0.868626] Serial: MPC52xx PSC UART driver

[   0.873254] 80011300.serial: ttyPSC0 at MMIO 0x80011300 (irq = 40) is aMPC52xx PSC

[   0.882000] 80011400.serial: ttyPSC1 at MMIO 0x80011400 (irq = 40) is aMPC52xx PSC

[   0.891674] RAMDISK driver initialized: 4 RAM disks of 16384K size 1024blocksize

[   0.900339] fsl-mscan initializing

[   0.905331] fsl-mscan fsl-mscan.0: probe port 0xE1062300 done, clkrate:100000000

[   0.914468] fsl-mscan fsl-mscan.1: probe port 0xE1064380 done, clkrate:100000000

[   0.923951] eth0: fs_enet: 00:ec:00:12:00:01

[   0.929250] FEC MII Bus: probed

[   0.932421] Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2

[   0.938751] ide: Assuming 33MHz system bus speed for PIO modes; overridewith idebus=xx

[   0.948123] Driver 'sd' needs updating - please use bus_type methods

[   0.955179] MPC5121 MTD nand Driver 0.2

[   0.959877] NAND device: Manufacturer ID: 0xad, Chip ID: 0xdc (Hynix NAND512MiB 3,3V 8-bit)

[   0.968370] 2 NAND chips detected

[   0.974412] mpc5121r2nfc 40000000.nfc: Using OF partition info

[   0.980418] Creating 2 MTD partitions on "NAND":

[   0.984984] 0x00000000-0x08000000 : "nand0,128M"

[   0.990570] 0x08000000-0x40000000 : "nand0,896M"

[   0.998018] fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller

[   1.005015] fsl-ehci fsl-ehci.0: new USB bus registered, assigned busnumber 1

[   1.035367] fsl-ehci fsl-ehci.0: irq 44, io mem 0x80004000

[   1.051326] fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00, driver 10 Dec2004

[   1.060019] usb usb1: configuration #1 chosen from 1 choice

[   1.065956] hub 1-0:1.0: USB hub found

[   1.069738] hub 1-0:1.0: 1 port detected

[   1.176257] Initializing USB Mass Storage driver...

[   1.415352] usb 1-1: new high speed USB device using fsl-ehci and address2

[   1.562650] usb 1-1: configuration #1 chosen from 1 choice

[   1.569648] scsi0 : SCSI emulation for USB Mass Storage devices

[   1.576156] usbcore: registered new interface driver usb-storage

[   1.582390] USB Mass Storage support registered.

[   1.587525] mice: PS/2 mouse device common for all mice

[   1.593616] mpc5121-rtc 80000a00.rtc:rtc core: registered mpc5121-rtc as rtc0

[   1.601034] i2c /deventries driver

[   1.610959] Freescale(R) MPC5121 DMA Engine found, 64 channels

[   1.719596] fsldma: Self-test copy successfully

[   1.724711] usbcore: registered new interface driver usbhid

[   1.730270] drivers/hid/usbhid/hid-core.c: v2.6:USB HID core driver

[   1.736784] TCP cubic registered

[   1.740195] NET: Registered protocol family 1

[   1.744596] NET: Registered protocol family 17

[   1.748991] can: controller area network core (rev 20071116 abi 8)

[   1.755189] NET: Registered protocol family 29

[   1.759846] can: raw protocol (rev 20071116)

[   1.764433] RPC: Registered udp transport module.

[   1.769096] RPC: Registered tcp transport module.

[   1.774171] mpc5121-rtc 80000a00.rtc:setting system clock to 2009-11-26 14:13:58 UTC (1259244838)

[   1.783976] JFFS2 doesn't use OOB.

[  12.421437] VFS: Mounted root (jffs2 filesystem).

[  12.426255] Freeing unused kernel memory: 184k init

Mounting /proc and /sys

Starting the hotplug events dispatcherudevd

Synthesizing initial hotplug events

Setting the hostname to root

Mounting filesystems

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

cp: write error: No space left on device

Starting syslogd and klogd

Running sysctl

Setting up networking on loopback device:

Setting up networking on eth0:

Starting inetd:

[root@root /]# ls

Settings       etc            mnt            sbin           uImage_update

bin            home           opt            sys            usr

boot           lib            proc           tmp            var

dev           linuxrc        root           uImage_ori

[root@root /]#

可见下载到nor flash中的内核也是我们更新后的内核。