Dear zzs,
In message 20110713104600.GA17872@greatfirst.com you wrote:
-F- Undef detectedIs this the exact error message? And it gets printed by U-Boot? Problem is, I cannot find any such text in mainline U-Boot.
The message is printed after uboot.bin downloaded by my preloader, Maybe this message was printed by the preloader code after it jump to uboot.
I don;t know your preloader, so I cannot help you with that.
In my preloader some exception vector were setted to print message. So it seems uboot.bin had some illegal asm code in it.
Are you sure that your preloader analyses the binary image it loads and that it would detect specific assembler code in it? I tend to doubt that.
So what compiler options should be use? I notice some u-boot compile commandline has option '-march=armv4'. Why with this option it is still generate wrong code
Thi sis a strong statement, based on somewhat weak facts. Why are you so sure that there is any "wrong code" being generated? Please show which exact instructions you are talking about.
Best regards,
Wolfgang Denk