1. 基本环境设置
printenv
setenv serverip 192.168.1.115
setenv ipaddr 192.168.1.211
setenv gatewayip 192.168.1.1
setenv ethaddr 1E:23:37:48:5A:6B
setenv bootargs root=/dev/mtdblock2 rootfstype=yaffs init=/linuxrc mem=64M console=ttySAC0,115200
setenv bootcmd nand read 30008000 80000 200000 /; bootm
saveenv
2. 烧写Boot
tftp 30008000 u-boot-tq.bin
nand erase 0 60000
nand write 30008000 0 60000
明确相关板级配置:
(1) CPU -- s3c2440, 外部晶振12M
(2) SDRAM -- 64MB
(3) Nand Flash -- 64MB[K9F1208] 或 256MB[K9F2G08]
(4) 网卡 -- DM9000, 映射在BANK4
1、.config导入到内核目录
或选择cp arch/arm/configs/s3c2410_defconfig .config
作为基准配置
2、修改顶级Makefile，
修改 ARCH ?= arm
CROSS_COMPILE ?= arm-linux-
3、make menuconfig
4、晶振12000000，在arch/arm/mach-s3c2440/mach-smdk2440.c中 smdk2440_map_io
5、make zImage
6、制作成uImage（使用脚本create_img.sh）
二、接上文件系统（yaffs）
1.修改nand flash分区:
arch/arm/plat-s3c24xx/common-smdk.c
* NAND parititon from 2.4.18-swl5 */
static struct mtd_partition smdk_default_nand_part[] = {
[0] = {
.name = "BootLoader",
.size = 0x00060000, /* 24 Blocks -- 384K*/
.offset = 0,
},
[1] = {
.name = "Kernel",
.size = 0x00400000, /* 256 Blocks -- 4MB */
.offset = 0x00080000,
},
[2] = {
.name = "Rootfs",
.size = 0x03B80000, /* 59MB + 512KB*/
.offset = 0x00480000,
}
};
2. yaffs2补丁：（让内核支持yaffs文件系统）
1)在linux-2.6.32.10的平行目录下加压yaffs2.tar.gz
2)./patch-ker.sh c ../linux-2.6.32.10
3)重新make menuconfig选择yaffs
注意：设置内核时选中MTD支持：
2.3.1 Memory Technology Devices (MTD) --->
Memory Technology Device (MTD) support
MTD partitioning support
……
--- User Modules And Translation Layers
Direct char device access to MTD devices
Caching block device access to MTD devices
……
NAND Flash Device Drivers --->
NAND Device Support
NAND Flash support for S3C2410 SoC
S3C2410 NAND driver debug
2.3.2．设置内核时选中YAFFS支持：
File systems --->
Miscellaneous filesystems --->
Yet Another Flash Filing System(YAFFS) file system support
NAND mtd support
Use ECC functions of the generic MTD-NAND driver
Use Linux file caching layer
Turn off debug chunk erase check
Cache short names in RAM
2.3.2 修改晶振arch/arm/mach-s3c2440/mach-smdk2440.
static void __init smdk2440_map_io(void)
{
s3c24xx_init_io(smdk2440_iodesc, ARRAY_SIZE(smdk2440_iodesc));
s3c24xx_init_clocks(12000000);
s3c24xx_init_uarts(smdk2440_uartcfgs, ARRAY_SIZE(smdk2440_uartcfgs));
}
把static void—init smdk2440_map_io (void)函数中16934400 改为 12000000
2.3.3 编译内核并将内核下载到研发板的flash中。内核启动之后，在启动信息里面能看到分区打印信息。
Kernel panic - not syncing: Attempted to kill init!
Kernel Features --->
[*] Use the ARM EABI to compile the kernel
[*] Allow old ABI binaries to run with this kernel (EXPERIMENTA)
把这个选上就可以了
一、dm9000网卡移植
1.将dm9000.c文件覆盖到driver/net下
2.(1)
arch/arm/mach-s3c2440/mach-smdk2440.c
增加
#include <linux/dm9000.h>
/* DM9000 */
static struct resource s3c_dm9k_resource[] = {
[0] = {
.start = S3C2410_CS4,
.end = S3C2410_CS4 + 3,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = S3C2410_CS4 + 4,
.end = S3C2410_CS4 + 4 + 3,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = IRQ_EINT7,
.end = IRQ_EINT7,
.flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
}
};
static struct dm9000_plat_data s3c_dm9k_platdata = {
.flags = DM9000_PLATF_16BITONLY,
};
struct platform_device s3c_device_dm9000 = {
.name = "dm9000",
.id = 0,
.num_resources = ARRAY_SIZE(s3c_dm9k_resource),
.resource = s3c_dm9k_resource,
.dev = {
.platform_data = &s3c_dm9k_platdata,
}
};
(2)
在arch/arm/mach-s3c2440/mach-smdk2440.c中
static struct platform_device *smdk2440_devices[] __initdata = {
&s3c_device_usb,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
#ifdef CONFIG_DM9000
&s3c_device_dm9000,
#endif
};
3.make menuconfig 加入DM9000的选项 device driver/network device support / 10M-100M /dm9000
二、USB MassStorage 驱动移植
配置内核
1）device driver / scsi devices support
scsi disk support
scsi generic support
scsi medie changer support
2) device driver / usb SUPPORT
SUPPORT for Host-side USB
*** USB Host Controller Drivers ***
OHCI HCD support
*** USB Device Class drivers ***
USB mass store support
3）file system/Native Language support
iso8859-1 Default NTL
* codepage437
* simple chinese （cp936，gb2312）
* iso8859-1
mount -t vfat /dev/sda1 /mnt/udisk
umount /mnt/udisk
或
umount /dev/sda1
mount -t vfat -o iocharset=cp936 /dev/sda1 /mnt/udisk
三、SD卡(内核自带了驱动)
(1) 配置内核
device driver -> MMC/SD/SDIO CARD -> Samsung S3C SD/MMC ... 选中
(2)arch/arm/mach-s3c2440/mach-smdk2440.c
增加头文件：
#include <plat/mci.h>
/* MMC/SD */
static struct s3c24xx_mci_pdata tq2440_mci_pdata = {
.gpio_detect = S3C2410_GPG(8),
};
static struct platform_device *smdk2440_devices[] __initdata = {
&s3c_device_usb,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
#ifdef CONFIG_DM9000
&s3c_device_dm9000,
#endif
&s3c_device_sdi,
};
static void __init smdk2440_machine_init(void)
{
s3c24xx_fb_set_platdata(&smdk2440_fb_info);
s3c_i2c0_set_platdata(NULL);
platform_add_devices(smdk2440_devices, ARRAY_SIZE(smdk2440_devices));
smdk_machine_init();
//Added for SDI
s3c_device_sdi.dev.platform_data = &tq2440_mci_pdata;
}
(3)drivers/mmc/core/sd.c(445hang)
在函数mmc_sd_init_card() 函数中，在调用 mmc_read_switch(card) 函数前加上10ms的延时，即加入下面的一句：
mdelay(10);
/*
* Fetch switch information from card.
*/
err = mmc_read_switch(card);
if (err)
goto free_card;
=》
/*
* Fetch switch information from card.
*/
mdelay(10); //Added by ljk
err = mmc_read_switch(card);
if (err)
goto free_card;
（4）访问
设备结点：/dev/mmcblk0 /dev/mmcblk0p1
mount /dev/mmcblk0p1 /mnt
四、LCD移植（4.3''和3.5''的区别: 320*240 ==> 480*272）
1）修改内核选择
Graphic support
Support for frame buffer devices
S3C2410 LCD framebuffer support
Console display driver support
Framebuffer Console support
Select compiled-in fonts
Mini 4x6 font
Bootup logo
2）修改arch/arm/mach-s3c2440/mach-smdk2440.c
/* LCD driver info */
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 = 240,
.height = 320,
.pixclock = 166667, /* HCLK 60 MHz, divisor 10 */
.xres = 240,
.yres = 320,
.bpp = 16,
.left_margin = 20,
.right_margin = 8,
.hsync_len = 4,
.upper_margin = 8,
.lower_margin = 7,
.vsync_len = 4,
};
=>
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, /* 480 */
.height = 240, /* 272 */
.pixclock = 80000, /* HCLK 100 MHz, divisor 3 */
.xres = 320, /* 480 */
.yres = 240, /* 272 */
.bpp = 16,
.left_margin = 28, /* 19 */ /* for HFPD*/
.right_margin = 24, /* 10 */ /* for HBPD*/
.hsync_len = 42, /* 30 */ /* for HSPW*/
.upper_margin = 6, /* 4 */ /* for VBPD*/
.lower_margin = 2, /* 2 */ /* for VFPD*/
.vsync_len = 12, /* 8 */ /* for VSPW*/
};
static struct s3c2410fb_mach_info smdk2440_fb_info __initdata = {
.displays = &smdk2440_lcd_cfg,
.num_displays = 1,
.default_display = 0,
#if 0
/* currently setup by downloader */
.gpccon = 0xaaaaaaaa,
.gpccon_mask = 0xffffffff,
.gpcup = 0xffffffff,
.gpcup_mask = 0xffffffff,
.gpdcon = 0xaaaaaaaa,
.gpdcon_mask = 0xffffffff,
.gpdup = 0xffffffff,
.gpdup_mask = 0xffffffff,
#endif
};
制作开机logo
1.打开Linux下的GIMP，右键 image->mode->index->224
2、右键->file->save as..->*.ppm->ascii
3、(保存原有的ppm)
cp *.ppm driver/video/logo/logo_linux_clut224.ppm
五、RTC时钟的移植
(1)arch/arm/mach-s32440/mach-smdk2440.c
static struct platform_device *smdk2440_devices[] __initdata = {
&s3c_device_usb,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
#ifdef CONFIG_DM9000
&s3c_device_dm9000,
#endif
&s3c_device_sdi,
&s3c24xx_uda134x,
&s3c_device_rtc, //Added for RTC
};
(2)配置内核如下
.Device Drivers --->
<*> Real Time Clock --->
[*] Set system time from RTC on startup and resume
(rtc0) RTC used to set the system time
[*] /sys/class/rtc/rtcN (sysfs)
[*] /proc/driver/rtc (procfs for rtc0)
[*] /dev/rtcN (character devices)
<*> Samsung S3C series SoC RTC
date
date -s 2010.10.07-hh:mm:ss
hwclock -w
hwclock -s