Hello, Kumar! Yes, I want to add another Local Bus Address Range for our FPGA on an extra CS line. I've tried to do that in U-Boot as the Code is already there. But my modified (some old 1.1.2 (not the official release) version) U-Boot didn't work (I guess compiling issues) and rendered my Board non-bootable, which was really no fun! I also want to play around with the bus-timing and GPCM/UPM configurations. So, changing U-Boot for every little waitstate and re-booting just to get a register changed is a showstopper for me. (Yes, I know, a BDI2000 would be fun). So I decided to do all my stuff first in linux in a module to shorten the design cycle by a factor of 1E+3 which works fine now, as I started this immr_t thingy for mpc8540 on my own...
Now it seems that u-boot's immap_85xx.h is pretty much what I was looking for, I will try to merge my stuff with it and get a immap_8540.h out of it. So, you answered my question indirectly (get back to mainline) that there is no code available on the linux side yet, right? I can release my stuff, if anybody is interested... no problem. The LBC part is verified (some others are dummys and untested) and in a /works for me/ state. Thanks and best greets, Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm.de Phone: +49-89-741518-50 Fax: +49-89-741518-19 >> Hi, There! >> >> I want to access the local bus controller (LBC) registers >> of the mpc8540 from within a module. >> Therefore I want to use similar structures as for the 8560's cpm2_immr >> or the 8xx. However, I was not able to find a complete ccsr map for the >> mpc8540 in the 2.6.11.x kernels. (immap_85xx.h, 8xx_immr.h, ...) >> >> Can someone point me to get the memc_brx / orx and friends for mpc8540? >> (the complete CCSR map.) Or some code to recycle? >> Or do I need to patch more into immap_85xx.h on my own? I just want to >> avoid to do duplicate work. >> >> Or is it better to extend the fsl_ocp or the platform device structures? > > > What do you plan on doing with the local bus controller in the kernel? > If this is only configuration of the controller for a given chip select > that I would suggest doing something similar to how we handle PCI. You > can probably find a description of the localbus registers in the u-boot > source tree. > > Is this a change you want to get back into the mainline kernel tree? > > - kumar >
