Linux 2.6.22.19移植到S3C2410(gec2410)之：USB驱动移植
参考文献：
《linux-2.6.22下USB驱动移植》
http://blog.chinaunix.net/u1/43581/showart_1878283.htm
平台信息：
目标板 ：GEC2410
OS ：Fedora Cor8（FC8）
编译器 ：arm-2007q3-53-arm-none-eabi-i686-pc-linux-gnu（4.2.1）
根文件 ：busybox 1.9.2
移植步骤：
1. 修改在arch/arm/mach-s3c2410目录下的mach-smdk2410.c，添加如下内容
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//添加usb头文件
#include
#include
#include
#include
//-------------------------------------------------usb
struct s3c2410_hcd_info usb_gec2410_info = {
.port[0] = {
.flags = S3C_HCDFLG_USED
}
};
int usb_gec2410_init(void) /* USB */
{
unsigned long upllvalue = (0x78<<12)|(0x02<<4)|(0x03);
printk("USB Control, (c) 2009 s3c2410\n");
s3c_device_usb.dev.platform_data = &usb_s3c2410_info;
while(upllvalue!=__raw_readl(S3C2410_UPLLCON))
{ __raw_writel(upllvalue,S3C2410_UPLLCON);
mdelay(1);
}
return 0;
}
/*************************************************/
//同时将usb_ljd2410_init()函数添加到smdk2410_map_io函数里面进行初始化，如下所示：
static void __init smdk2410_map_io(void)
{
s3c24xx_init_io(smdk2410_iodesc, ARRAY_SIZE(smdk2410_iodesc));
s3c24xx_init_clocks(0);
s3c24xx_init_uarts(smdk2410_uartcfgs, ARRAY_SIZE(smdk2410_uartcfgs));
usb_gec2410_init();
}
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2. 编译内核，选中所装驱动,配置USB鼠标键盘
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#make menuconfig
Device Drivers >
USB support --->
<*> Support for Host-side USB
<*> OHCI HCD support
--- USB Input Devices
<*> USB Human Interface Devices (full HID) support
[*] HID input layer support
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3. 配置U盘支持
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因为要优盘用到了SCSI 命令，所以我们先增加SCSI 支持。
在Device Drivers 菜单里面，选择SCSI device support
#make menuconfig
Device Drivers >
SCSI device support --->
[*] legacy /proc/scsi support
<*> SCSI disk support
然后选择返回Device Drivers 菜单，再选择 USB support，按回车进入USB support菜单找到并选中
Device Drivers >
USB support --->
<*> USB Mass Storage support
[*] USB Mass Storage verbose debug
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4. 插入U盘的信息
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/ # usb 1-1: new full speed USB device using s3c2410-ohci and address 2
usb 1-1: configuration #1 chosen from 1 choice
scsi0 : SCSI emulation for USB Mass Storage devices
scsi 0:0:0:0: Direct-Access USB2.0 Flash Disk 2.10 PQ: 0 ANSI: 2
sd 0:0:0:0: [sda] 4122593 512-byte hardware sectors (2111 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] 4122593 512-byte hardware sectors (2111 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda:<7>usb-storage: queuecommand called
sda1
sd 0:0:0:0: [sda] Attached SCSI removable disk
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5. mount U盘时候出现错误：
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错误一：
$ mount -t vfat sda1 /mnt
Unable to load NLS charset cp437
FAT: codepage cp437 not found
mount: mounting sda1 on /mnt failed: Invalid argument
解答：
这是因为内核缺少cp437字符集. 所以需要重新配置内核！
在filesystems
-->native language support
-> 中选择Codepage 437和其他的一些常用的字符集即可.
错误二：
Unable to load NLS charset iso8859-1
FAT: IO charset iso8859-1 not found
解答：
跟上边的出错原因是一样的，缺少该语种
在File systems－－》
Native language support－－》
<*> NLS ISO 8859-1 (Latin 1; Western European Languages) 即可 |
