FS2410 开发板linux-2.6.35内核 jffs2根文件系统镜像

1.了解 NandFlash 信息
FS2410开发板的Nand Flash 型号K91208 ;
PageSize = 512 Bytes + 16 Bytes(OOB);
BlockSize = 32 pages *(512 Bytes + 16 Bytes(OOB)) = 32 pages * 528 Bytes = 16K +512 Bytes(OOB) ;
DeviceSize = 4096 blocks * (32 *(512 Bytes + 16 Bytes(OOB))) = 4096 blocks * 16K +4096 *512 Bytes(OOB) =  64MBytes + 2KBytes (OOB) ;

所以 制作文件系统竟像时的 -e/--eraseblock = 0x4000 -s/--pagesize = 0x200 -p/--pad = 根文件系统分区大小,这里为20MBytes;

S3C24XX NAND Driver, (c) 2004 Simtec Electronics                                                                                    
s3c24xx-nand s3c2410-nand: Tacls=3, 29ns Twrph0=7 69ns, Twrph1=3 29ns                                                               
s3c24xx-nand s3c2410-nand: NAND soft ECC                                                                                            
NAND device: Manufacturer ID: 0xec, Chip ID: 0x76 (Samsung NAND 64MiB 3,3V 8-bit)                                                   
Scanning device for bad blocks                                                                                                      
Bad eraseblock 3946 at 0x000003da8000                                                                                               
Creating 4 MTD partitions on "NAND 64MiB 3,3V 8-bit":                                                                               
0x000000000000-0x000000040000 : "u-boot"                                                                                            
0x000000040000-0x000000400000 : "kernel-linux-2.6.35"                                                                               
0x000000400000-0x000001800000 : "rootfs"                                                                                            
0x000001800000-0x000004000000 : "userdata"       
Nand Flash 分区修改,linux-2.6.35/arch/arm/plat-s3c24xx/common-smdk.c 109 line;

2. 创建 jffs2 文件系统镜像 :sudo ~/bin/mkfs.jffs2 -e 0x4000 -s 0x200 -d filesystem -o filesystem.jffs2 -p 1400000
3. 复制文件系统镜像到/tftpboot/目录
4. tftp下载 jffs2文件系统镜像:
fs2410# tftp 30800000 filesystem.jffs2                                                                                               
TFTP from server 192.168.20.192; our IP address is 192.168.20.253                                                                   
Filename 'filesystem.jffs2'.                                                                                                        
Load address: 0x30800000                                                                                                            
Loading: #################################################################                                                          
 ####################                                                                                                       
done                                                                                                                                
Bytes transferred = 5062656 (4d4000 hex)                                                                                            
5.  擦写nand flash 擦除跟文件系统分区部分的flash空间                                         
fs2410# nand erase 400000 1400000  
                                                        
                                                                                                                                    
NAND erase: device 0 offset 4194304, size 20971520 ...                                                                              
OK                                                                                                                                  
6. 写jffs2文件系统镜像到nandflash 根文件系统分区
fs2410# nand write.jffs2 30800000 400000 4d4000    //烧写jffs2文件系统镜像,文件系统下载是多大,这里的烧录大小就写多大,否则会出现如下错误提示:
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x003f0000: 0x80b0 instead                                                                               
                                                                                                                                    
NAND write: device 0 offset 4194304, size 5062656 ...                                                                               
 5062656 bytes written: OK           
7. 烧录ok,设置启动参数

setenv bootargs root=/dev/mtdblock2 rootfstype=jffs2 rw console=ttySAC0,115200 init=/linuxrc mem=64M

saveenv

8. 开始启动系统;                                                                                          
fs2410# tftp 30800000 uImage ;bootm 30800000                                                                                        
TFTP from server 192.168.20.192; our IP address is 192.168.20.253                                                                   
Filename 'uImage'.                                                                                                                  
Load address: 0x30800000                                                                                                            
Loading: #################################################################                                                          
         #################################################################                                                          
         ##############################                                                                                             
done                                                                                                                                
Bytes transferred = 2348164 (23d484 hex)                                                                                            
## Booting image at 30800000 ...                                                                                                    
   Image Name:   Linux-2.6.35                                                                                                       
   Created:      2011-01-24   6:22:17 UTC                                                                                           
   Image Type:   ARM Linux Kernel Image (uncompressed)                                                                              
   Data Size:    2348100 Bytes =  2.2 MB                                                                                            
   Load Address: 30108000                                                                                                           
   Entry Point:  30108000                                                                                                           
   Verifying Checksum ... OK                                                                                                        
OK                                                                                                                                  
                                                                                                                                    
Starting kernel ...      

Uncompressing Linux... done, booting the kernel.                                                                                   
Linux version 2.6.35 (pingo@pingo-laptop) (gcc version 3.4.5) #38 Mon Jan 24 14:22:06 CST 2011                                     
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177                                                                           
CPU: VIVT data cache, VIVT instruction cache                                                                                       
Machine: SMDK2410                                                                                                                  
Ignoring unrecognised tag 0x54410010                                                                                               
Memory policy: ECC disabled, Data cache writeback                                                                                  
CPU S3C2410A (id 0x32410002)                                                                                                       
S3C24XX Clocks, Copyright 2004 Simtec Electronics                                                                                  
S3C2410: core 202.800 MHz, memory 101.400 MHz, peripheral 50.700 MHz                                                               
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on                                                                               
... ...                      
JFFS2 version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.                                                                     
ROMFS MTD (C) 2007 Red Hat, Inc.                                                                                                   
... ...                                                        
S3C24XX NAND Driver, (c) 2004 Simtec Electronics                                                                                   
s3c24xx-nand s3c2410-nand: Tacls=3, 29ns Twrph0=7 69ns, Twrph1=3 29ns                                                              
s3c24xx-nand s3c2410-nand: NAND soft ECC                                                                                           
NAND device: Manufacturer ID: 0xec, Chip ID: 0x76 (Samsung NAND 64MiB 3,3V 8-bit)                                                  
Scanning device for bad blocks                                                                                                     
Bad eraseblock 3946 at 0x000003da8000                                                                                              
Creating 4 MTD partitions on "NAND 64MiB 3,3V 8-bit":                                                                              
0x000000000000-0x000000040000 : "u-boot"                                                                                           
0x000000040000-0x000000400000 : "kernel-linux-2.6.35"                                                                              
0x000000400000-0x000001800000 : "rootfs"                                                                                           
0x000001800000-0x000004000000 : "userdata"                                                                                         
... ...                                   
Empty flash at 0x004d08c4 ends at 0x004d0a00                                                                                       
VFS: Mounted root (jffs2 filesystem) on device 31:2.                                                                               
Freeing init memory: 164K                                                                                                          
mount: mounting sysfs on sys failed: Device or resource busy                                                                                                                                                                                
Please press Enter to activate this console. #                                                                                                                                                                                                                 
# ls                                                                                                                               
bin              lib              root             usr                                                                             
button_irq_test  linuxrc          sbin             var                                                                             
buttons_drv.ko   mnt              sys                                                                                              
dev              netlink-arm      test-ex                                                                                          
etc              proc             tmp          

 

以上---

 

相关链接:

http://hi.baidu.com/yysirius/blog/item/2b014da72e510193d14358ea.html/cmtid/6ec82173ae5270128701b0de

http://blog.sina.com.cn/s/blog_4a082210010005dq.html

http://blogold.chinaunix.net/u2/74383/showart_1144731.html

你可能感兴趣的:(c,image,cache,server,Flash,hex)