linux-3.2.7移植OK6410的SD卡驱动

首先大家看看前一篇所写的OK6410移植linux-3.3.1

因为移植时改了板级文件,以防大家看不懂,参考一下那篇文章

 

切入正题,首先进入arch/arm/mach-s3c64xx/ 

打开mach-ok6410.c

添加头文件#include <plat/sdhci.h>

添加代码:

static struct s3c_sdhci_platdata ok6410_hsmmc0_pdata = {    .max_width      = 4,    .cd_type        = S3C_SDHCI_CD_INTERNAL,};static struct s3c_sdhci_platdata ok6410_hsmmc1_pdata = {    .max_width      = 4,    .cd_type        = S3C_SDHCI_CD_PERMANENT,};

 

之后在此文件中找到static void __init ok6410_machine_init(void)函数,在此函数中添加:

s3c_sdhci0_set_platdata(&ok6410_hsmmc0_pdata);s3c_sdhci1_set_platdata(&ok6410_hsmmc1_pdata);

然后make menuconfig

进入Device Drivers   --->

                <*> MMC/SD/SDIO card support   --->
                             .......................................................................

                             <*> MMC block device driver

                             (8)    Number of minors per block device  

                             [*]     Use bounce buffer for simple hosts              

                             .........................................................................

                             <*> Secure Digital Host Controller Interface support

                             <*> SDHCI support on Samsung S3C Soc

(以上必选,其他多选会不会影响挂载我还不知道)

之后就可以编译内核了

 

插入SD卡提示:

mmc0: new high speed SDHC card at address 1234
mmcblk0: mmc0:1234 SA04G 3.70 GiB
 mmcblk0: p1

则说明移植成功.内核已经可以识别sdcard了.

 

编译时还需要选择内核支持sdcard的文件系统,例如我的sdcard是FAT32格式的.

则进入File systems   --->

                     DOS/FAT/NT Filesystems   --->

                                 ...........................................................

                                <*> VFAT (Windows-95) fs support

                                 ...........................................................

 

若无自动挂载,则手动挂载,挂载命令如: mount -t vfat /dev/mmcblk0p1 /sdcard/

 

若挂载时出现:

FAT-fs (mmcblk0p1): codepage cp437 not found

 

则是内核编译时没有选上相应的字符内码列表

这时make menuconfig

 

进入File systems   --->

               Native language support   --->

                         .......................................................................................

                         <*>       Codepage  437  (United States, Canada)

                        .........................................................................................

这里的选择视错误提示而定.

 

好了,到这里一般都没有什么错误,可以直接挂载上了