Linux2.6.39在S3C2440上的移植(二)添加yaffs2文件系统

1、主机环境：VMare下ubuntu10.04 ，1G内存。

2、编译编译环境：arm-linux-gcc

3、开发板：Micro2440，2M nor flash，256M nand flash。

4、u-boot-version：u-boot-2010.06

5、linux -version：Linux-2.6.39

2.1、yaffs2文件系统移植

a)获取yaffs2 源代码

针对嵌入式设备,现在大部分开发板都可以支持yaffs2 文件系统,特别是使用nand flash 作为存储器的嵌入式设备而创建的一种文件系统，早先的yaffs 仅支持小页(512byte/page)的nand flash，现在的开发板大都配备了更大容量的nand flash，它们一般是大页模式的(2K/page)，使用yaffs2 就可以支持大页的nand flash，下面是yaffs2 的移植详细步骤。

使用git工具获取yaffs2源码
root@bootloader:/home/eilian/development# apt-get install git-core

root@bootloader:/home/eilian/development# git clone git://www.aleph1.co.uk/yaffs2

Initialized empty Git repository in /home/eilian/development/yaffs2/.git/

remote: Counting objects: 6632, done.

remote: Compressing objects: 100% (3921/3921), done.

remote: Total 6632 (delta 5268), reused 3394 (delta 2642)

Receiving objects: 100% (6632/6632), 3.35 MiB | 59 KiB/s, done.

Resolving deltas: 100% (5268/5268), done.

root@bootloader:/home/eilian/development#ls

Android Bootloader Linux Tools workspace
yaffs2

root@bootloader:/home/eilian/development#cdyaffs2

b)为内核打补丁

root@bootloader:/home/eilian/development/yaffs2#./patch-ker.sh c s ../Linux/linux-2.6.39

c)配置内核

root@bootloader:/home/eilian/development/Linux/linux-2.6.39# make menuconfig //在之前加载缺省文件的前提下

移动上下按键找到File Systems，如图



按回车进入该子菜单，再找到“Miscellaneous filesystems”菜单项，如图



按回车进入该子菜单，找到“YAFFS2 file system support”，如图



按空格选中它，这样我们就在内核中添加了yaffs2 文件系统的支持，按“Exit”退出内核配置。最好选中“Yes”保存

2.2、编译测试

root@bootloader:/home/eilian/development/Linux/linux-2.6.39#make clean

root@bootloader:/home/eilian/development/Linux/linux-2.6.39#make uImage

打开超级终端下载内核运行

U-Boot 2010.06 (Dec 03 2011 - 12:10:06)

DRAM: 64 MiB

Flash: 2 MiB

NAND: dev_id = 218

NAND 256MiB 3,3V 8-bit256 MiB

In: serial

Out: serial

Err: serial

Net: dm9000

Device nand0 not found!

Hit any key to stop autoboot: 0

bootloader# printenv

bootargs=noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0 mem=64M

bootcmd=nboot 0x32000000 kernel; bootm 0x32000000

bootdelay=3

baudrate=115200

ethaddr=08:00:3e:26:0a:5b

netmask=255.255.255.0

ethact=dm9000

mtdids=nand0=nandflash0

mtdparts=mtdparts=nandflash0:1m@0(bootloader),128k(params),5m(kernel),-(root)

ipaddr=211.67.217.138

serverip=211.67.217.136

gatewayip=211.67.217.1

stdin=serial

stdout=serial

stderr=serial

Environment size: 428/131068 bytes

bootloader# tftp 32000000 uImage

dm9000 i/o: 0x20000300, id: 0x90000a46

DM9000: running in 16 bit mode

MAC: 08:00:3e:26:0a:5b

operating at unknown: 0 mode

Using dm9000 device

TFTP from server 211.67.217.136; our IP address is 211.67.217.138

Filename 'uImage'.

Load address: 0x32000000

Loading: T #################################################################

#################################################################

#################################################################

#################################################################

#################################################################

#################################################################

#####################################

done

Bytes transferred = 2182288 (214c90 hex)

bootloader# bootm 32000000

## Booting kernel from Legacy Image at 32000000 ...

Image Name: Linux-2.6.39

Created: 2011-12-02 12:29:08 UTC

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 2182224 Bytes = 2.1 MiB

Load Address: 30008000

Entry Point: 30008000

Verifying Checksum ... OK

Loading Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Linux version 2.6.39 (root@bootloader) (gcc version 4.3.2 (Sourcery G++ Lite 2008q3-72) ) #3 Fri Dec 2 20:27:45 CST 2011

CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177

CPU: VIVT data cache, VIVT instruction cache

Machine: eilian240 development board

Memory policy: ECC disabled, Data cache writeback

CPU S3C2440A (id 0x32440001)

S3C24XX Clocks, Copyright 2004 Simtec Electronics

S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz

CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256

Kernel command line: noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0 mem=64M

PID hash table entries: 256 (order: -2, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory: 64MB = 64MB total

Memory: 60384k/60384k available, 5152k reserved, 0K highmem

Virtual kernel memory layout:

vector : 0xffff0000 - 0xffff1000 ( 4 kB)

fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

DMA : 0xffc00000 - 0xffe00000 ( 2 MB)

vmalloc : 0xc4800000 - 0xf6000000 ( 792 MB)

lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)

modules : 0xbf000000 - 0xc0000000 ( 16 MB)

.init : 0xc0008000 - 0xc0029000 ( 132 kB)

.text : 0xc0029000 - 0xc040a654 (3974 kB)

.data : 0xc040c000 - 0xc042fe00 ( 144 kB)

SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1

NR_IRQS:85

irq: clearing subpending status 00000003

irq: clearing subpending status 00000002

Console: colour dummy device 80x30

console [ttySAC0] enabled

Calibrating delay loop... 201.52 BogoMIPS (lpj=503808)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

gpiochip_add: gpios 288..303 (GPIOK) failed to register

gpiochip_add: gpios 320..334 (GPIOL) failed to register

gpiochip_add: gpios 352..353 (GPIOM) failed to register

NET: Registered protocol family 16

S3C2440: Initialising architecture

S3C2440: IRQ Support

S3C244X: Clock Support, DVS off

bio: create slab <bio-0> at 0

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

s3c-i2c s3c2440-i2c: slave address 0x10

s3c-i2c s3c2440-i2c: bus frequency set to 98 KHz

s3c-i2c s3c2440-i2c: i2c-0: S3C I2C adapter

Advanced Linux Sound Architecture Driver Version 1.0.24.

NET: Registered protocol family 2

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

TCP established hash table entries: 2048 (order: 2, 16384 bytes)

TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

RPC: Registered tcp NFSv4.1 backchannel transport module.

JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.

ROMFS MTD (C) 2007 Red Hat, Inc.

msgmni has been set to 117

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

Console: switching to colour frame buffer device 60x53

fb0: s3c2410fb frame buffer device

s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440

s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440

s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440

brd: module loaded

S3C24XX NAND Driver, (c) 2004 Simtec Electronics

s3c24xx-nand s3c2440-nand: Tacls=3, 29ns Twrph0=7 69ns, Twrph1=3 29ns

s3c24xx-nand s3c2440-nand: NAND soft ECC

NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)

Creating 5 MTD partitions on "nand":

0x000000000000-0x000000100000 : "bootloader"

0x000000100000-0x000000120000 : "params"

0x000000120000-0x000000620000 : "kernel"

0x000000620000-0x000040620000 : "root"

mtd: partition "root" extends beyond the end of device "nand" -- size truncated to 0xf9e0000

0x000000000000-0x000010000000 : "nand"

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

s3c2410-ohci s3c2410-ohci: S3C24XX OHCI

s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1

s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 2 ports detected

usbcore: registered new interface driver libusual

mousedev: PS/2 mouse device common for all mice

S3C24XX RTC, (c) 2004,2006 Simtec Electronics

i2c /dev entries driver

S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics

s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq enabled

cpuidle: using governor ladder

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

usbcore: registered new interface driver usbhid

usbhid: USB HID core driver

ALSA device list:

No soundcards found.

TCP cubic registered

NET: Registered protocol family 17

Registering the dns_resolver key type

drivers/rtc/hctosys.c: unable to open rtc device (rtc0)

yaffs: dev is 32505858 name is "mtdblock2" rw

yaffs: passed flags ""

VFS: Mounted root (yaffs filesystem) on device 31:2.

Freeing init memory: 132K

Failed to execute /linuxrc. Attempting defaults...

Kernel panic - not syncing: No init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.

[<c002e198>] (unwind_backtrace+0x0/0xec) from [<c03073d8>] (panic+0x54/0x184)

[<c03073d8>] (panic+0x54/0x184) from [<c0029590>] (init_post+0xa0/0xc4)

[<c0029590>] (init_post+0xa0/0xc4) from [<c0008404>] (kernel_init+0x100/0x138)

[<c0008404>] (kernel_init+0x100/0x138) from [<c002a7d4>] (kernel_thread_exit+0x0/0x8)