uboot启动内核参数
setenv bootargs 'root=/dev/nfs nfsroot=192.168.1.141:/root/rootfs/rootfs ip=192.168.1.10:192.168.1.141:192.168.1.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC2,115200'
setenv bootcmd 'movi read kernel 30008000; bootm 30008000'
setenv bootcmd 'tftp 0x30008000 zImage; bootm 0x30008000'
//bootcmd 对应的是boot命令
setenv bootargs 'console=ttySAC2,115200 root=/dev/mmcblk0p2 rw init=/linuxrc rootfstype=ext3'
tslib移植问题
selected device is not a touchscreen I understand
export TSLIB_TSEVENTTYPE=INPUT
export TSLIB_ROOT=/opt/tslib
export TSLIB_TSDEVICE=/dev/input/event2
export QWS_MOUSE_PROTO=tslib:/dev/input/event2
export TSLIB_CONFFILE=$TSLIB_ROOT/etc/ts.conf
export TSLIB_CALIBFILE=$TSLIB_ROOT/etc/pointercal
export TSLIB_PLUGINDIR=$TSLIB_ROOT/lib/ts
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_CONSOLEDEVICE=none
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TSLIB_ROOT/lib
九鼎新板210的tslib，配置电容屏的内容
echo set tslib environment...
export TSLIB_TSDEVICE=/dev/input/event2
export TSLIB_TSEVENTTYPE=INPUT
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_CALIBFILE=/etc/pointercal
公建控制器 NUC972版
uboot 给kernel传参 64MB内存 nandfalse
#define CONFIG_BOOTCOMMAND "nand read 0x7fc0 0x200000 0x500000 ;bootm 0x7fc0" // nandflash flash kernel boot kernel"
uboot给从nandfalse中的0X200000地址处读取0X500000（5MB）大小的内容到内存的0X7fc0出运行。内核放在nandfalse的0X200000到0X1600000。
#define CONFIG_BOOTARGS "mem=64M console=ttyS0 115200 root=/dev/mtdblock2 rw rootfstype=yaffs2 rootflags=inband-tags mtdparts=nand0:0x200000@0x0(u-boot),0x1400000@0x200000(kernel),-(user)" //yaffs2 true
uboot给内核传递参数
mem=64M 告诉板载的内存是多大
console=ttyS0 115200 控制台串口与波特率
root=/dev/mtdblock2 rw rootfstype=yaffs2 根文件系统在mtdblock2分区 可读可写 文件系统类型为yaffs2
rootflags=inband-tags mtdparts=nand0:0x200000@0x0(u-boot),0x1400000@0x200000(kernel),-(user)" 设备为nand0 分区信息：0-0X200000给uboot 0X200000-0X1600000给kernel
0X1600000之后的所有false可用空间给user。
#if 1 //why 2016/10/21 env
#define CONFIG_NETMASK 255.255.255.0
#define CONFIG_IPADDR 192.168.1.221
#define CONFIG_SERVERIP 192.168.1.189
#define CONFIG_GATEWAYIP 192.168.1.0
//#define CONFIG_BOOTCOMMAND "tftp 0x7fc0 970p_w_picpath.ub; bootm 0x7fc0" //tftp download kernel serverip 192.168.1.189
#define CONFIG_BOOTCOMMAND "nand read 0x7fc0 0x200000 0x500000 ;bootm 0x7fc0" // nandflash flash kernel boot kernel"
//#define CONFIG_BOOTARGS "root=/dev/ram0 console=ttyS0,115200n8 rdinit=/sbin/init mem=64M mtdparts=nand0:0x200000@0x0(u-boot),0x1400000@0x200000(kernel),-(user)"
//#define CONFIG_BOOTARGS "noinitrd root=/dev/mtdblock2 rootfstype=yaffs2 rootflags=inband-tags console=ttyS0,115200n8 rdinit=/sbin/init mem=64M mtdparts=nand0:0x200000@0x0(u-boot),0x1400000@0x200000(kernel),-(user)"
#define CONFIG_BOOTARGS "mem=64M console=ttyS0 115200 root=/dev/mtdblock2 rw rootfstype=yaffs2 rootflags=inband-tags mtdparts=nand0:0x200000@0x0(u-boot),0x1400000@0x200000(kernel),-(user)" //yaffs2 true
//#define CONFIG_BOOTARGS "root=/dev/nfs nfsroot=192.168.1.189:/root/rootfs ip=192.168.1.221:192.168.1.189:192.168.1.0:255.255.255.0::eth0:off console=ttyS0,115200 rdinit=/sbin/init mem=64M" //nfs
#endif
u-boot-spl.bin 烧录地址 0X200 type：uboot
u-boot.bin 烧录地址 0x100000 type：data
kernel 烧录地址 0x200000
yaffs2 烧录地址 0x1600000
rootfs-yaffs2 为自动运行应用程序的镜像
public-control-yaffs2 为不自动运行应用程序的镜像