[OpenBIOS] Solaris anyone?

[Blue Swirl]

On Mon, Jun 13, 2011 at 2:06 AM, Bob Breuer <breuerr at mc.net> wrote:
> Nathan Kunkee wrote:
>> > Date: Mon, 6 Jun 2011 15:54:39 -0400
>> > From: tarl-b2 at tarl.net
>> > To: openbios at openbios.org
>> > Subject: Re: [OpenBIOS] Solaris anyone?
>> >
>> > > Hmmm it looks from reading the source code that QEMU doesn't actually
>> > > implement a proper audio device for SS-5 at all but merely provides a
>> > > dummy device with an empty mapped region. In that case it may be
>> > > possible to provide a simple mapping in OpenBIOS to match the one in
>> > > QEMU which may be enough to persuade Solaris to boot.
>> >
>> > Ugh. I recall that audio chip being non-trivial...
>> >
>> > It might be worth deleting that audio device from the device tree and
>> > see if Solaris really does get further.
>> >
>> I've tried the same CD image with the SS-10 QEMU machine, which seems
>> to lack the audio device, and I still hang. I get the first part of
>> the kernel, no extra logging, and then the spinner to infinity...
>>
>> nathan at xanth:/usr/local/build/qemu$ sparc-softmmu/qemu-system-sparc
>> -bios openbios-builtin.elf -M SS-10 -cdrom
>> /local/storage/ISO/solaris-9-sparc-d1.iso -nographic
>>
>> Configuration device id QEMU version 1 machine id 64
>> CPUs: 1 x TI,TMS390Z55
>> UUID: 00000000-0000-0000-0000-000000000000
>> Welcome to OpenBIOS v1.0 built on Apr 30 2011 02:11
>>   Type 'help' for detailed information
>> Trying disk...
>> No valid state has been set by load or init-program
>>
>> 0 > boot cd:d -k -v Not a bootable ELF image
>> Loading a.out image...
>> Loaded 7680 bytes
>> entry point is 0x4000
>> bootpath: /iommu/sbus/espdma/esp/sd at 2,0:d
>>
>> Jumping to entry point 00004000 for type 00000005...
>> switching to new context:
>> Size: 0x45c9f+0xdaf1+0x1d6a7 Bytes
>> SunOS Release 5.9 Version Generic_112233-12 32-bit
>> Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved.
>> Use is subject to license terms.
>> Ethernet address = 52:54:0:12:34:56
>> Using default device instance data
>> \
>>
>>
>> Does anyone know what loads on a real SS after the audio device?
>>
>> Nathan
>
> For this hang, Solaris is stuck trying to set and verify a bit which is
> currently un-settable in qemu.  It's the MMU breakpoint action register
> (asi 0x4c), and if bit 12 is set, then it should continue on just like
> with SS-5.  After fcp0, the next thing Solaris should initialize is the
> network:
>
> pseudo-device: fcp0
> fcp0 is /pseudo/fcp at 0
> Using RPC Bootparams for network configuration information.
> le0: No carrier - cable disconnected or hub link test disabled?
> le0: No carrier - cable disconnected or hub link test disabled?
> Skipping interface le0

Would this (untested) patch to QEMU help?

diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h
index 320530e..b93fdfd 100644
--- a/target-sparc/cpu.h
+++ b/target-sparc/cpu.h
@@ -403,6 +403,7 @@ typedef struct CPUSPARCState {
     uint32_t mmuregs[32];
     uint64_t mxccdata[4];
     uint64_t mxccregs[8];
+    uint64_t mmubpaction;
     uint64_t mmubpregs[4];
     uint64_t prom_addr;
 #endif
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index b38691e..1023870 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -1941,7 +1941,7 @@ uint64_t helper_ld_asi(target_ulong addr, int
asi, int size, int sign)
     case 0x32: // Turbosparc page table descriptor diagnostic
     case 0x39: /* data cache diagnostic register */
     case 0x4c: /* SuperSPARC MMU Breakpoint Action register */
-        ret = 0;
+        ret = env->mmubpaction;
         break;
     case 0x38: /* SuperSPARC MMU Breakpoint Control Registers */
         {
@@ -2304,7 +2304,9 @@ void helper_st_asi(target_ulong addr, uint64_t
val, int asi, int size)
                // descriptor diagnostic
     case 0x36: /* I-cache flash clear */
     case 0x37: /* D-cache flash clear */
+        break;
     case 0x4c: /* breakpoint action */
+        env->mmubpaction = val;
         break;
     case 0x38: /* SuperSPARC MMU Breakpoint Control Registers*/
         {