9、移植USB host驱动
在这个版本的linux内核，已经对USB驱动进行来很好的支持，仅仅需要修改配置。
Device Drivers --->
[*] USB support --->
{*} Support for Host-side USB
[*] USB device filesystem (DEPRECATED)
[*] USB device class-devices (DEPRECATED)
<*> OHCI HCD support
<*> USB Mass Storage support
[*] HID Devices --->
{*} Generic HID support
[*] /dev/hidraw raw HID device support
SCSI device support --->
<*> SCSI device support
[*] legacy /proc/scsi/ support
<*> SCSI disk support
<*> SCSI tape support
10、移植RTC驱动
在这个版本的linux内核，已经对RTC驱动进行来很好的支持，不需要修改配置。相应配置如下
Device Drivers --->
<*> Real Time Clock --->
[*] Set system time from RTC on startup and resume
(rtc0) RTC used to set the system time
[ ] RTC debug support
*** RTC interfaces ***
[*] /sys/class/rtc/rtcN (sysfs)
[*] /proc/driver/rtc (procfs for rtc0)
[*] /dev/rtcN (character devices)
<*> Samsung S3C series SoC RTC
然后添加对设备的支持
打开arch/arm/mach-s3c2440/mach-smdk2440.c ，添加设备，代码如下：
static struct platform_device *smdk2440_devices[] __initdata = { &s3c_device_ohci, &s3c_device_lcd, &s3c_device_wdt, &s3c_device_i2c0, &s3c_device_iis, &s3c_device_rtc, };
11、移植UDA1341驱动
在平台上添加和配置UDA1341:
修改arch/arm/mach-s3c2440/mach-smdk2440.c ，在开始添加头文件
#include <sound/s3c24xx_uda134x.h>
#include <mach/gpio-fns.h>
static struct s3c24xx_uda134x_platform_data s3c24xx_uda134x_data = { .l3_clk = S3C2410_GPB(4), .l3_data = S3C2410_GPB(3), .l3_mode = S3C2410_GPB(2), .model = UDA134X_UDA1341, }; static struct platform_device s3c24xx_uda134x = { .name = "s3c24xx_uda134x", .dev = { .platform_data = &s3c24xx_uda134x_data, } };
把设备添加到平台当中static struct platform_device *smdk2440_devices[] __initdata = { &s3c_device_ohci, &s3c_device_lcd, &s3c_device_wdt, &s3c_device_i2c0, &s3c_device_iis, &s3c_device_rtc, &s3c24xx_uda134x, };
内核配置如下
Device Drivers --->
<*> Sound card support --->
<*> Advanced Linux Sound Architecture --->
<*> OSS Mixer API
<*> OSS PCM (digital audio) API
[*] OSS PCM (digital audio) API - Include plugin system
[*] Support old ALSA API
[*] Verbose procfs contents
[*] Verbose printk
[*] Generic sound devices --->
<*> ALSA for SoC audio support --->
<*> SoC Audio for the Samsung S3C24XX chips
<*> SoC I2S Audio support UDA134X wired to a S3C24XX
12、移植DM9000驱动
a、修改 drivers/net/dm9000.c 文件：
头文件增加：
#include <mach/regs-gpio.h>
#include <mach/irqs.h>
#include <mach/hardware.h>
在dm9000_probe 函数 开始增加：
unsigned char ne_def_eth_mac_addr[]={0x00,0x12,0x34,0x56,0x80,0x49}; static void *bwscon; static void *gpfcon; static void *extint0; static void *intmsk; #define BWSCON (0x48000000) #define GPFCON (0x56000050) #define EXTINT0 (0x56000088) #define INTMSK (0x4A000008) bwscon=ioremap_nocache(BWSCON,0x0000004); gpfcon=ioremap_nocache(GPFCON,0x0000004); extint0=ioremap_nocache(EXTINT0,0x0000004); intmsk=ioremap_nocache(INTMSK,0x0000004); writel(readl(bwscon)|0xc0000,bwscon); writel( (readl(gpfcon) & ~(0x3 << 14)) | (0x2 << 14), gpfcon); writel( readl(gpfcon) | (0x1 << 7), gpfcon); // Disable pull-up writel( (readl(extint0) & ~(0xf << 28)) | (0x4 << 28), extint0); //rising edge writel( (readl(intmsk)) & ~0x80, intmsk);
在这个函数的最后需要修改：if (!is_valid_ether_addr(ndev->dev_addr)) { /* try reading from mac */ mac_src = "chip"; for (i = 0; i < 6; i++) //ndev->dev_addr[i] = ior(db, i+DM9000_PAR); ndev->dev_addr[i] = ne_def_eth_mac_addr[i]; }
b、修改arch/arm/mach-s3c2440/mach-smdk2440.c ，添加设备static struct platform_device *smdk2440_devices[] __initdata = { &s3c_device_ohci, &s3c_device_lcd, &s3c_device_wdt, &s3c_device_i2c0, &s3c_device_iis, &s3c_device_rtc, &s3c24xx_uda134x, &s3c_device_dm9000, };
c、修改 arch/arm/plat-s3c24xx/devs.c
添加头文件
#include <linux/dm9000.h>
添加以下代码
static struct resource s3c_dm9000_resource[] = { [0] = { .start = S3C24XX_PA_DM9000, .end = S3C24XX_PA_DM9000+ 0x3, .flags = IORESOURCE_MEM }, [1]={ .start = S3C24XX_PA_DM9000 + 0x4, //CMD pin is A2 .end = S3C24XX_PA_DM9000 + 0x4 + 0x7c, .flags = IORESOURCE_MEM }, [2] = { .start = IRQ_EINT7, .end = IRQ_EINT7, .flags = IORESOURCE_IRQ }, }; static struct dm9000_plat_data s3c_device_dm9000_platdata = { .flags= DM9000_PLATF_16BITONLY, }; struct platform_device s3c_device_dm9000 = { .name= "dm9000", .id= 0, .num_resources= ARRAY_SIZE(s3c_dm9000_resource), .resource= s3c_dm9000_resource, .dev= { .platform_data = &s3c_device_dm9000_platdata, } }; EXPORT_SYMBOL(s3c_device_dm9000);
d、修改 arch/arm/plat-sumsung/include/plat/devs.h 45行附近,添加
extern struct platform_device s3c_device_dm9000;
e、修改arch/arm/mach-s3c2410/include/mach/map.h 文件
/* DM9000 */
#define S3C24XX_PA_DM9000 0x20000300
#define S3C24XX_VA_DM9000 0xE0000000
13、启动画面显示小企鹅的方法
配置内核 ，下面是必选项
Device Drivers--->
Graphics support --->
<*> Support for frame buffer devices
<*> S3C2410 LCD framebuffer support ,multi support!
Console display driver support --->
<*> Framebuffer Console support
Logo configuration --->
[*] Bootup logo
[*] Standard 224-color Linux logo