USB驱动在FL2440的移植(2.6.33.7内核)

iletlet

一、移植环境

    主  机：Fedora 14 （kernel-2.6.33.7）
    开发板：FL2440(nandflash:K9F1G08 128MB)

    编译器：arm-linux-gcc-4.3.2

 

二、移植步骤

    2.6.33.7内核中对USB设备的支持已经非常全面了，这里只需要配置他就可以了，配置完后重新编译内核烧到开发板上。具体步骤如下：

    1、配置内核。

1. Device Drivers --->
   
2.     SCSI device support --->
   
3.         < > RAID Transport Class
   
4.         <*> SCSI device support
   
5.         < > SCSI target support
   
6.         [*] legacy /proc/scsi/ support
   
7.         *** SCSI support type (disk, tape, CD-ROM) ***
   
8.         <*> SCSI disk support
   
9.         < > SCSI tape support
   
10.         < > SCSI OnStream SC-x0 tape support
    
11.         < > SCSI CDROM support
    
12.         <*> SCSI generic support
    
13.         < > SCSI media changer support
    
14.     [*] HID Devices --->
    
15.         --- HID Devices
    
16.         -*- Generic HID support
    
17.         [ ] HID debugging support
    
18.         [ ] /dev/hidraw raw HID device support
    
19.         *** USB Input Devices ***
    
20.         <*> USB Human Interface Device (full HID) support
    
21.         [ ] PID device support
    
22.         [*] /dev/hiddev raw HID device support
    
23.     [*] USB support --->
    
24.         {*} Support for Host-side USB
    
25.         [ ] USB verbose debug messages
    
26.         [ ] USB announce new devices
    
27.         *** Miscellaneous USB options ***
    
28.         [*] USB device filesystem
    
29.         [*] USB device class-devices (DEPRECATED)
    
30.         <*> OHCI HCD support
    
31.         <*> USB Mass Storage support

    2.启动。发板启动时候出现如下提示信息，可以看到sda就是U盘设备了，sda1是U盘的一个分区。

1. scsi0 : usb-storage 1-1.4:1.0
   
2. yaffs_read_super: isCheckpointed 0
   
3. VFS: Mounted root (yaffs filesystem) on device 31:3.
   
4. Freeing init memory: 144K
   
5. scsi 0:0:0:0: Direct-Access Generic USB SD Reader 1.00 PQ: 0 ANSI: 0 CCS
   
6. sd 0:0:0:0: Attached scsi generic sg0 type 0
   
7. sd 0:0:0:0: [sda] 3994624 512-byte logical blocks: (2.04 GB/1.90 GiB)
   
8. sd 0:0:0:0: [sda] Write Protect is off
   
9. sd 0:0:0:0: [sda] Assuming drive cache: write through
   
10. sd 0:0:0:0: [sda] Assuming drive cache: write through
    
11.  sda: sda1
    
12. sd 0:0:0:0: [sda] Assuming drive cache: write through
    
13. sd 0:0:0:0: [sda] Attached SCSI removable disk

    3.挂载U盘。但是失败了。

1. # mount /dev/sda1/ mnt/usb
   
2. mount: mounting /dev/sda1/ on mnt/usb failed

    4. 错误分析处理。首先查看/dev/目录下并没有sda1节点所以出错，我们查看/proc/partitions/目录发现sda1的主设备号是8，次设备号是1，那么我们就创建这个设备的节点，b代表块设备，最后再执行mount命令，没有出错.

1. # cat proc/partitions
2. major minor #blocks name
3.   31 0 128 mtdblock0
4.   31 1 384 mtdblock1
5.   31 2 3072 mtdblock2
6.   31 3 61440 mtdblock3
7.   31 4 512 mtdblock4
8.   31 5 60928 mtdblock5
9.    8 0 1997312 sda
10.    8 1 1997188 sda1
11. #mknod /dev/sda1 b 8 1
12. #mont /dev/sda1 /mnt/usb

    5.U盘挂载成功，可以查看U盘的内容，即表示开发板可以驱动USB。

1. #ls /mnt/usb
   
2. st-ndt
   
3. hello.txt
   
4. E1002stdV3.1.0.7.install.bin

2011-01-26