您的位置 首页 发布

linux内核移植-移植2.6.35.4内核到s3c2440

硬件平台:FL2440主机平台:Ubuntu11.04交叉编译器:arm-linux-gcc4.3.2原创作品,转载请标明出处http://blog.csdn.net/yming0221/arti..

硬件渠道:FL2440

主机渠道:Ubuntu 11.04
穿插编译器:armlinux-gcc 4.3.2
原创著作,转载请标明出处http://blog.csdn.net/yming0221/article/details/6604616
本来是想移植最新的内核2.6.39可是总是在编译快完结的时分报错,有人说是新的内核对arm渠道的支撑欠好,所以就降低了一下版别,这儿移植2.6.35.4内核
一、准备作业
1、下载 解压内核
从官网上下载linux-2.6.35的内核, ftp://ftp.kernel.org/pub/linux/kernel/v2.6/ ,文件不大,约85M。
新建一个作业目录s3c2440,将内核源码包劳动至作业目录下,再解压。
2、移植yaffs2驱动
下载最新的驱动点击下载 解压在作业目录s3c2440下
进入yaffs2: cd yaffs2
给内核打补丁: ./patch-ker.sh c ../linux-2.6.35
3、装置穿插编译环境
下载arm-linux-gcc 4.3.2,然后装置并装备环境变量
最终碑文arm-linux-gcc -v查看
二、移植
??1、修正机器码
飞凌开发板的bootloader默许的机器码是193,所以咱们在运用smdk2440机器的时分,需求修
改机器码。修正内核2.6.35.3中的arch/arm /tools/mach-types。
?? 删掉
s3c2410 ARCH_S3C2410 S3C2410 182
然后将
s3c2440 ARCH_S3C2440 S3C2440 362
修正为
s3c2440 ARCH_S3C2440 S3C2440 193
2、指定方针板machine、编译器和编译器途径
?修正linux-2.6.35.3/Makefile,将
ARCH ?= $(SUBARCH)
CROSS_COMPILE ?=
修正成ARCH ?= arm
CROSS_COMPILE ?= /opt/arm/4.3.2/bin/arm-linux-
留意:CROSS_COMPILE是指穿插编译器的途径,该途径一定要完好,不然最终make zImage时提示文件不存在。
3、增加devfs文件管理器的支撑
咱们所用的文件体系运用的是devfs文件管理器。修正fs/Kconfig,
找到
menu “Pseudo filesystems”
增加如下查办:
config DEVFS_FS
bool “/dev file system support (OBSOLETE)”
default y
config DEVFS_MOUNT
bool “Automatically mount at boot”
default y
depends on DEVFS_FS
协助了解:Kconfig便是对应着内核的装备菜单。假设要想增加新的驱动到内核的源码中,可以修正Kconfig,
这样就可以挑选这个驱动,假设想使这个驱动被编译,要修正Makefile。
4、修正晶振频率( 可解决打印信息乱码问题 )
文件:arch/arm/mach-s3c2440/mach-smdk2440.c
s3c24xx_init_clocks(12000000);
5、修正MTD分区
static struct mtd_partition smdk_default_nand_part[] = {
[0] = {
.name = “Boot”,
.size = 0x00100000,
.offset = 0
},
[1] = {
.name = “MyApp”,
.size = 0x003c0000,
.offset = 0x00140000,
},
[2] = {
.name = “Kernel”,
.size = 0x00300000,
.offset = 0x00500000,
},
[3] = {
.name = “fs_yaffs”,
.size = 0x0f000000, //240M
.offset = 0x00800000,
},
};
详细参阅http://blog.csdn.net/yming0221/article/details/6566551
6、封闭ECC校验
文件:drivers/mtd/nand/s3c2410.c
函数:s3c2410_nand_init_chip
chip->ecc.mode = NAND_ECC_NONE;
问题:关于ECC:ECC是“Error Correcting Code”的简写,中文名称是“过错查看和纠正”。ECC是一种可以完成
“过错查看和纠正”的技能,ECC内存便是应用了这种技能的内存,一般多应用在服务器及图形作业站上,这将使整个
电脑体系在作业时更趋于安全安稳。此处为防止简单犯错,将ECC封闭。
7、修正nandflash驱动,支撑K9F1G08的nandflash
修正drivers/mtd/nand下面的nand_bbt.c 文件:
static struct nand_bbt_descr largepage_memorybased = {
.options = 0,
.offs = 0,
.len = 1, // 原数值为2,支撑2K每页的flash修正为1。K9F1G08,K9F2G08是2k每页的flash
.pattern = scan_ff_pattern
};
static struct nand_bbt_descr largepage_flashbased = {
.options = NAND_BBT_SCAN2NDPAGE,
.offs = 0,
.len = 1, //原数值为2,支撑2K每页的flash修正为1。K9F1G08,K9F2G08是2k每页的flash
.pattern = scan_ff_pattern
};
8、下面,开端装备内核。
进入linux-2.6.35目录,把s3c2410的默许装备写入config文件。
make s3c2410_defconfig
make menuconfig
装备内核特色运用ARM EABI编译
装备文件体系选项
装备yaffs2文件体系
修正装备如下:
File systems —>
[*] Miscellaneous filesystems —>
<*> YAFFS2 file system support
-*- 512 byte / page devices
-*- 2048 byte (or larger) / page devices
[*] Autoselect yaffs2 format
[*] Cache short names in RAM
装备cpu相关选项
修正装备如下:
System Type —>
S3C2440 Machines —>
[*] SMDK2440
[*] SMDK2440 with S3C2440 CPU module
去掉S3C2400 Machines、S3C2410 Machines、S3C2412 Machines、S3C2442 Machines的一切选项 ,
不然会报错。假如现在编译内核,下载到开发板中,内核就可以正常发动了.有了雏形,持续移植设备驱动。
这儿,内核选项*代表编译至内核,M代表编译为模块 。
9、移植USB host驱动
在这个版别的linux内核,现已对USB驱动进行来很好的支撑,只是需求修正装备。
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
在这个版别的linux内核,现已对RTC驱动进行来很好的支撑,不需求修正装备。相应装备如下
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
然后增加对设备的支撑
翻开arch/arm/mach-s3c2440/mach-smdk2440.c ,增加设备,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
在渠道上增加和装备UDA1341:
修正arch/arm/mach-s3c2440/mach-smdk2440.c ,在开端增加头文件
#include
#include
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,
}
};
把设备增加到渠道傍边
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,
};
内核装备如下
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、修正 drivers/net/dm9000.c 文件:
头文件增加:
#include
#include
#include
在dm9000_probe 函数 开端增加:
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);
在这个函数的最终需求修正:
if (!is_valid_ether_addr(ndev->dev_addr)) {
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、修正arch/arm/mach-s3c2440/mach-smdk2440.c ,增加设备
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、修正 arch/arm/plat-s3c24xx/devs.c
增加头文件
#include
增加以下代码
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、修正 arch/arm/plat-sumsung/include/plat/devs.h 45行邻近,增加
extern struct platform_device s3c_device_dm9000;
e、修正arch/arm/mach-s3c2410/include/mach/map.h 文件
#define S3C24XX_PA_DM9000 0x20000300
#define S3C24XX_VA_DM9000 0xE0000000
13、发动画面显现小企鹅的办法
装备内核 ,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
14、3.5寸LCD显现的移植
2.6.34内核中现已支撑
15、修正uart2为一般串口以及测验程序
修正arch/arm/mach-s3c2440/mach-smdk2440.c 中的uart2的装备,修正后如下:
static struct s3c2410_uartcfg smdk2440_uartcfgs[] __initdata = {
[0] = {
.hwport = 0,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x03,
.ufcon = 0x51,
},
[1] = {
.hwport = 1,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x03,
.ufcon = 0x51,
},
[2] = {
.hwport = 2,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x03,
.ufcon = 0x51,
}
};
在drivers/serial/samsung.c 中增加对uart2控制器的装备,装备为一般串口。
增加头文件:
#include
#include
在static int s3c24xx_serial_startup(struct uart_port *port)函数中,增加
if (port->line == 2) {
s3c2410_gpio_cfgpin(S3C2410_GPH(6), S3C2410_GPH6_TXD2);
s3c2410_gpio_pullup(S3C2410_GPH(6), 1);
s3c2410_gpio_cfgpin(S3C2410_GPH(7), S3C2410_GPH7_RXD2);
s3c2410_gpio_pullup(S3C2410_GPH(7), 1);
}
16、移植看门狗
修正装备
Device Drivers —>
[*] Watchdog Timer Support —>
<*> S3C2410 Watchdog
最终:make zImage
最终编译出来的zImage就2.1M左右。
烧写内核,发动成功
不过,此刻,显现屏显现还有点问题,呈现上下两栏。解决办法如下:
修正mach-smdk2440.c中
static struct s3c2410fb_display smdk2440_lcd_cfg __initdata = {
.lcdcon5 = S3C2410_LCDCON5_FRM565 |
S3C2410_LCDCON5_INVVLINE |
S3C2410_LCDCON5_INVVFRAME |
S3C2410_LCDCON5_PWREN |
S3C2410_LCDCON5_HWSWP,
.type = S3C2410_LCDCON1_TFT,
.width = 320,
.height = 240,
.pixclock = 270000,
.xres = 320,
.yres = 240,
.bpp = 16,
.left_margin =8,
.right_margin = 5,
.hsync_len = 63,
.upper_margin = 15,
.lower_margin = 3,
.vsync_len = 5,
};
而且将.lpcsel = ((0xCE6) & ~7) | 1<<4,注释掉
static struct s3c2410fb_mach_info smdk2440_fb_info __initdata = {
.displays = &smdk2440_lcd_cfg,
.num_displays = 1,
.default_display = 0,
#if 0
.gpccon = 0xaa940659,
.gpccon_mask = 0xffffffff,
.gpcup = 0x0000ffff,
.gpcup_mask = 0xffffffff,
.gpdcon = 0xaa84aaa0,
.gpdcon_mask = 0xffffffff,
.gpdup = 0x0000faff,
.gpdup_mask = 0xffffffff,
#endif
//.lpcsel = ((0xCE6) & ~7) | 1<<4,
};
从头编译即可。
至此,2.6.35.4内核移植成功。

声明:本文内容来自网络转载或用户投稿,文章版权归原作者和原出处所有。文中观点,不代表本站立场。若有侵权请联系本站删除(kf@86ic.com)https://www.86ic.net/changshang/fabu/264498.html

为您推荐

联系我们

联系我们

在线咨询: QQ交谈

邮箱: kf@86ic.com

关注微信
微信扫一扫关注我们

微信扫一扫关注我们

返回顶部