Another week another SCSI bug

Fixed Solaris 2.6+ boot which I accidentally broke last week. It's not that my Solaris 2.3 dma/irq fix was wrong, but the fix unleashed a counterpart interrupts handling bug in esp controller.

Too bad that no one reported it earlier. I wouldn't have to hack till midnight now. ;-) And thanks to VooDoo_UzH_ for reporting it.

1993 reached

The time machine is working! Well, I had to fix another bug to do it. This time in DMA again. The Solaris 2.3/sparc can be installed under qemu!

Submitted the patch upstream. After it gets accepted, it should be possible to use Solaris 2.5.1- instructions from the how-to to install Solaris 2.3. I wonder if the patch also improves the situation with NetBSD 5.x stability. Feel free to report.

SunOS 4.1.4 again

Got back to SunOS 4.1.4 (aka Solaris 1.1.2). Thanks to Carey Sсhug, I had a chance to test in on a hard drive image. While serial port driver still has problems, the system is alive in the background and using qemu port forwarding  I was able to login via telnet:

SunOS UNIX (sol112)

login: root
SunOS Release 4.1.4 (GENERIC) #2: Fri Oct 14 11:09:47 PDT 1994
sol112#

Another week - another Solaris version (tm)

I'm still in the 20th century, but making progress.

SunOS Release 5.7 Version Generic_106541-08 [UNIX(R) System V Release 4.0]
Copyright (c) 1983-1999, Sun Microsystems, Inc.

# uname -a
SunOS 5.7 Generic_106541-08 sun4m sparc SUNW,SPARCstation-5
# ls -l /
total 122
drwxr-xr-x 2 root sys 512 Oct 15 1999 a

The next stop is going to be 21 century. But going to look at the performance problems first. Waiting 6 hours for the '#' is a bit boring (and the problem is definitely not the CPU speed).

Thanks to Sergey Dionidis (a.k.a sdio @ LOR) for helping to test it.

Playground extension

Carey Schug did me another favor. This time he provided access to a SparcServer-20 which he has at home! Now I can compare a virtual SS-20 with a real one. So, the little bugs, beware of me!
Thanks, Carey!

Solaris 2.5.1 and 2.6 install disks

Carey Schug provided me his spare 2.5.1 and 2.6 Solaris install disks, so I can extend my playground. Solaris 2.6 fails exactly the same way as 9 (bootblk: can't find the boot program). The 2.5.1 version fails differently:
(Can't deduct msgbuf from physical memory list) Program terminated

The problem is known with real SS-10 / SS-20 machines, and solution supposed to be moving SIMMs from one slot to another one. Not sure, that it would work with virtual SIMMs as well...

But, anyway this is a rare case when more bugs/error messages is better. Thanks, Carey!

Open Boot PROM images

Robert Reif has a collection of OBP images here.

Thanks, Robert.

Another collection of OBP images:
http://locomotion.tw/sparc/prom/

Boot PROMs

Got some Boot PROMs, thanks Pete! The most interesting is LX one. While SS-20 POST stops after the first error, LX goes on till it crashes completely. Obviously "Invalid CEXC" is not handled by qemu:

$$$$$ WARNING : No Keyboard Detected! $$$$$
MMU Context Table Reg Test
MMU Context Register Test
MMU TLB Replace Reg Test
MMU Sync Fault Stat Reg Test
MMU Sync Fault Addr Reg Test
MMU TLB/CAM NTA Pattern Test
ERROR : Address = 000000f8, exp = 07ffffdc, obs = 00000000, xor = 07ffffdc
ERROR : Address = 000000fc, exp = ffffffff, obs = 00000000, xor = ffffffff
D-Cache RAM NTA Test
ERROR : Address = 000007fc, exp = ffffffff, obs = 00000000, xor = ffffffff
D-Cache TAG NTA Test
ERROR : Address = 000007f0, exp = 07fff801, obs = 00000000, xor = 07fff801
I-Cache RAM NTA Test
ERROR : Address = 00000ffc, exp = ffffffff, obs = 00000000, xor = ffffffff
I-Cache TAG NTA Test
ERROR : Address = 00000fe0, exp = 07fff001, obs = 00000000, xor = 07fff001
FPU Register File Test
FPU Misaligned Reg Pair Test
FPU Single-precision Tests
FPU Double-precision Tests
FPU SP Invalid CEXC Test
ERROR : Unexpected Synchronous Trap Taken, Trap Type = 00000008, PSR = 414010c4, PC = 70002d8c, TBR = 00000080
STATUS : Entering scope loop .... Press key to Abort!qemu: fatal: Trap 0x03 while interrupts disabled, Error state
pc: 0000217c npc: 00002d68
General Registers:
%g0: 00000000 %g1: 00002d68 %g2: 00005555 %g3: 00000001
%g4: 00000002 %g5: 00000000 %g6: 00000000 %g7: 00000000
Current Register Window:
%o0: 00000000 %o1: 00000999 %o2: 00000000 %o3: 00000000
%o4: 00000000 %o5: 00000000 %o6: 0001fba0 %o7: 7000971c
%l0: 0002fff8 %l1: 00000000 %l2: 00000000 %l3: 00000000
%l4: 00000000 %l5: ffffffff %l6: 00000000 %l7: 00000000
%i0: 00000000 %i1: 00000000 %i2: 00000000 %i3: 00000000
%i4: 00000000 %i5: 00000000 %i6: 00000000 %i7: 00000000

Floating Point Registers:
%f00: 000000002.890625 inf -inf 000000000.000000
%f04: 000000002.890625 000000000.000000 000000002.890625 000000000.000000
%f08: 000000003.390625 000000000.000000 000000002.250000 000000000.000000
%f12: 000000002.890625 000000000.000000 000000002.312500 000000000.000000
%f16: 000000002.312500 000000000.000000 000000002.890625 000000000.000000
%f20: 000000002.718750 000000000.000000 000000002.562500 000000000.000000
%f24: 000000002.890625 000000000.000000 000000002.968750 000000000.000000
%f28: 000000002.312500 000000000.000000 000000002.890625 000000000.000000
psr: 0x41000000 -> ---- --- wim: 0x00000002
fsr: 0x0f884010
Aborted