Linux on Assabet board

[Gregor Pogatzki]

I am testing Linux on an SA-1110 Assabet board and I have got some problems/questions.   1. I cannot use the system with just one serial port, like it is described in the Assabet Documentation included in the kernel patch (diff-2.3.99-pre6-rmk1-np1). After downloading with angelboot and starting minicom I get a login prompt in the minicom window and on the LCD-display. But I am not able to type anything in the minicom window, so I cannot login or do anything else. When using the SA-1111 companion board, I can connect a second minicom via a second serial port (J16 on the companion board) and do my input in that minicom-window. The first minicom then shows my input and the output of the linux system. (The LCD display shows no further messages and switches off after a while.) So what can I do to run the whole thing without the companion board (without the second serial connection)?   2. The system seems to be extremly slow. I compiled an mp3 encoding algorithm with my cross compiler (cross-armv4l-linux-gcc-0.4_2.95.2-6.i386). It takes about 13 minutes to encode just 4 seconds of music!! On a 450 Mhz Pentium III it takes one or two seconds. So the StrongARM seems to be about 600 times slower! What can I do do make it faster? Is there any Initialization to be done, to make the StrongARM running on full 221Mhz clock frequency? What compiler options should I use to make a program as fast as possible on SA-1110?   3. Is there a driver for the UDA 1341 audio codec?   Thanks for your help, Gregor.