uboot移植整理.doc

1.Make编译uboot出错：
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board.c:138:error:inlinefunction'coloured_LED_init'cannotbedeclaredweak
board.c:140:error:inlinefunction'red_LED_on'cannotbedeclaredweak
board.c:142:error:inlinefunction'red_LED_off'cannotbedeclaredweak
board.c:144:error:inlinefunction'green_LED_on'cannotbedeclaredweak
board.c:146:error:inlinefunction'green_LED_off'cannotbedeclaredweak
board.c:148:error:inlinefunction'yellow_LED_on'cannotbedeclaredweak
board.c:150:error:inlinefunction'yellow_LED_off'cannotbedeclaredweak
make[1]:***[board.o]错误1
make[1]:正在离开目录`/opt/u-boot-1.3.4/lib_arm'
make:***[lib_arm/libarm.a]错误2

开始编译的时候会出现上面的错误，继续移植操作这个错误将消失。或者注释掉出错行。

****挂载文件系统时候的错误：************
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TCPcubicregistered
NET:Registeredprotocolfamily17
drivers/rtc/hctosys.c:unabletoopenrtcdevice(rtc0)
VFS:UnabletomountrootfsviaNFS,tryingfloppy.
VFS:Cannotopenrootdevice"nfs"orunknown-block(2,0)
Pleaseappendacorrect"root="bootoption;herearetheavailablepartitions:
1f0016mtdblock0(driver?)
1f012048mtdblock1(driver?)
1f024096mtdblock2(driver?)
1f032048mtdblock3(driver?)
1f044096mtdblock4(driver?)
1f0510240mtdblock5(driver?)
1f0624576mtdblock6(driver?)
1f0716384mtdblock7(driver?)
Kernelpanic-notsyncing:VFS:Unabletomountrootfsonunknown-block(2,0)
[<c013f390>](unwind_backtrace+0x0/0xf0)from[<c0431cb0>](panic+0x54/0x17c)

解决方法：保证传入的命令行参数正确无误，保证NFS配置成功，rootfs正确,可以重启机器试试。

错误：error:common/libcommon.a(main.o)usesFPAinstructions,whereasu-bootdoesnot
/opt/opt/FriendlyARM/toolschain/4.4.3/bin/.arm-none-linux-gnueabi-ld:failedtomergetargetspecificdataoffilecommon/libcommon.a(main.o)

不使用新的4.4.3版本的编译工具，改为以前的3.4.5版本的arm-linux-gnu-gcc.

****编译好的uboot下载到板子上没有任何的输出内容？？？************
可能是自动拷贝的4KB代码不能完成自启动，更改根目录下的Makefile文件：
将一行改为如下形式：
__LIBS:=$(subst$(obj),,$(LIBBOARD))$(subst$(obj),,$(LIBS)

interrupts.c:184:3:#error"tbclknotconfigured"
interrupts.c:Infunction`get_tbclk':
interrupts.c:175:warning:'tbclk'mightbeuseduninitializedinthisfunction
make[1]:***[interrupts.o]错误1
make[1]:正在离开目录`/opt/u-boot-1.3.1/cpu/arm920t/s3c24x0'

解决办法：