test aux key pressed

[xiangfu]

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Werner Almesberger wrote:
> Andy Green wrote:
>> Instead of loading the full kernel size in one call, Xiangfu can make a
>> while() loop there loading 64KByte units for example, and inside the
>> loop we check for AUX press.
>
> Good idea. And we just don't care about NOR in qi, eliminating the
> "AUX still pressed from selecting NOR" case.
>
>   If seen we always abort the loop and jump

i try to test the code as Andy say, but i still don't receive new debug
board and FPC(i think it's on the way)
so i can not see the UART output,
i use a sample way, but it seems not work,
if i hold AUX first the gta02 always goto NOR uboot.
so i must press POWER first,  attach is the DIFF
when i use:
>        int i = 0;
>         for(i=0;i<40000;i++)
>         {
>             blue_on(10);
the blue led just blank then boot the kernel

then i use:
>        int i = 0;
>         for(i=0;i<60000;i++)
>         {
>             blue_on(100);
>             if(aux_key_pressed())
>             {
>                 puts("aux key pressed\n");
>                 goto unhappy;
>             }
>         }
the blue led is on, but when i pressed AUX it is not goto unhappy, all
led off and also don't boot.
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