On Fri, Nov 13, 2009 at 4:28 PM, Artyom Tarasenko <atar4q...@googlemail.com> wrote: >>> Could you describe the steps how to boot Solaris with OBP? I'm sure >>> there are a lot of people who'd like to test if their favorite Sparc >>> Solaris programs work on QEMU. > > Gathered things for which I currently have hacks here: > http://tyom.blogspot.com/2009/11/things-missing-in-vanilla-qemu.html > > Actually for OBP itself it's just two (SS-5) or three (SS-20) things: > > - Floppy. Instead of fixing it, I broke it completely, so OBP doesn't > try to initialize it and hang. Actually it maybe not the fdc itself, > but the irq handling. There are OBP tests which may help to understand > what is currently going wrong. I didn't need it, does the fdc actually > work under linux/netbsd/OpenBIOS?
Not at least Linux, IIRC Linux floppy driver is broken. FDC is wired a bit differently from PC setup. We don't need it, but getting OBP just to accept it would be nice. > - [SparcStation-5] 0x6e000000 AFX. OBP tries to access it and fails > with "unassigned address exception". Is only present in the SS-5's > TCX. The required address space is just one byte long. IMHO makes no > sense to create a special stub device for it. Can we push it into the > TCX? I'd put it to sun4m.c, there is similar device (idreg) already. > - [SparcStation-20] 0xef8010000 DBRI, 0x9000X00X FCode SIMMs. > "unassigned address exception". > > AFX, DBRI and FCode SIMMs can be implemented as stubs. Yet better > would be if SBUS probing would do a proper fault. This devices seem to > be optional. > DBRI audio could be useful, even though cs4231 does not work.
