On May 31, 2005, at 11:03 AM, Clemens Koller wrote: > 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?
Yes, that was my thinking. You can grab just the lbc bits and put them in immap_85xx.h and do the same ioremap thing we do for pci in arch/ppc/syslib/ppc85xx_setup.c. > 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. It sounds like this is custom to your board so I wouldn't bother releasing it out unless it something you want to get into the standard kernel tree. - kumar
