Doing stuff on uClinux EE590 Autumn 2004

What to do, what to do… Hardware works & runs bundled apps, because John rules Now we want it to do what we say It’s simpler than I thought What follows is a uClinux apps howto Much is straight from: http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux/documentation/

Get the code tree The hardware works, so now you need software to run on it Follow directions on uClinux for Microblaze site for a starter tree from CVS Will form basis for uClinux image and give lots of code samples

Write your stuff Jeremy’s code and code tree are great starters Use normal microblaze function calls; there’s no MMU to get in the way Be sure to modify uClinux-dist/include/asm-microblaze/mbvanilla.h for your board

Make the uClinux image Add your app to the image build list Copy into new directory in uClinux-dist/user/ with header files and everything uClinux-dist/ Documentation/Adding-User-Apps-HOWTO “make menuconfig” settings: Vendor: Insight; Product: mbvanilla_net (this will use your modified registers; you could make a whole new entry if you wanted, in uClinux/config) LibC version: uClibc, check both “Customize Kernel Settings” and “Customize Vendor/User Settings”

Make the uClinux image In the first menu: In the second menu: Make changes necessary for hardware In the second menu: Check the box next to your program make dep; make Note: may need things like libxil.a You’ll get a make error, “cannot find –lxil” Get from hardware files: projectname/mblaze/lib and drop into uClinux-dist/lib Provides stuff like print, putnum, xil_printf

Download the image Build hardware on FPGA Make sure bootloader code from mbvanilla is right (has correct memory addresses), download bootloader to FPGA Linux: use dl.sh script that comes with mbvanilla Windows: open script in text editor and replicate the commands to xmd (run xmd through main xilinx shell somewhere) Go get a snack

Go to town Boot the image, run your program Add program to boot-time with uClinux-dist/vendors/Insight/mbvanilla_net/rc Be sure to background it: foo & Other methods can be used to run it Cron: schedule script at startup Other: add required config files to Makefile next to rc, and copy them next to rc too

Prologue Microblaze emulator Problems with continuing this project http://uclinux.openchip.org/ Who knows what hardware gets it to work Problems with continuing this project ee590.ee lacks ample disk space for many tree copies Code trees diverge quickly, somehow, even with continual cvs updates

Prologue Using codesign tools Just like normal, determine what should be turned into VHDL and become hardware and what should be software on the microblaze Take software and point it at your created hardware, probably via GPIO bus Debug

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