aaron lwe wrote: > Corey Osgood <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> > wrote: > > aaron lwe wrote: > > On Dec 10, 2007 10:19 AM, Corey Osgood <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > <mailto: [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>>> wrote: > > > > aaron lwe wrote: > > > Dear all, > > > > > > the via v-link bus is for data communication between > northbridge and > > > sourthbridge, > > > if I just want to make dram work, do I need to configure the > > v-link bus? > > > > > > thanks. > > > > No, vlink can be handled before or after ram init, and it > isn't even > > necessary, if no config is done it will default to the slowest > > operating > > mode (newer chipsets may bootstrap to higher modes, depending on > > motherboard design). However, you do have to program the CPU > bus > > registers and all the various dram config registers before > ram init. > > Getting these settings right may be a real pain, depending > on what > > chipset you're dealing with. > > > > -Corey > > > > > > Thanks Corey. I've been trying to make cn700 work, until now > without luck. > > I've programmed host bus and some dram controller registers, but > not all. > > how can I know which registers should be programmed and which > needn't? > > can you give me some advices? thanks. > > > > I'm already nearly done with the cn700, please try the attached > patch. I > apologize if there's any cruft in there, I'm working on another > project > right this moment, so I don't have time for a good cleanup. > > -Corey > > > Thanks a lot, after a few times trying, I got a question. > Does the IDE/Sata settings in auto.c has any effect on dram? > If not, I would like first comment those code, 'cause I got an "IDE > Controller not found!" > error once booted and then die, which is wired. > When I comment those code, I can successfully went to sdram configure > functions. > but the ram_check displayed many failures: > LinuxBIOS-2.0.0.0-Normal Sun Dec 16 18:09:41 EST 2007 starting... > Found good data, testing it 01 02 03 04 05 Test passed > Enabling shadow ram > Setting ram bank size to 0x40
Here's a problem, this should be 0x08 for 512MB. I have no idea how/why this happened. Also check that the MA Map type is correct. -Corey -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios