[OpenBIOS] Booting SunOS from OpenBIOS

[Mark Cave-Ayland]

On 06/04/13 10:46, Artyom Tarasenko wrote:

>> Yes! In kadb I get!
>>
>> FMEM: ofmem_map_page_range ffcb0000 ->  006ea0000 00008000 mode 000000bc
>> .vmunix loaded - 0x7c000 bytes used
>>
>> Unfortunately it's not as helpful as it became under Solaris 2.6+ :
>
> Especially when someone hasn't use it for the long time. Actually it's
> pretty good:
>
> kadb>  :c
> OFMEM: ofmem_claim phys=ffffffffffffffff size=00001000 align=00001000
> OFMEM: ofmem_claim_virt virt=00000000 size=00001000 align=00001000
> OFMEM: ofmem_map_page_range fef65000 ->  006f77000 00001000 mode 000000bc
> Begin traceback... sp = f0186b20
> Called from ffc017cc, fp=f0186b80, args=9 f013f870 f013f874 0 200 0
> Called from f013f83c, fp=f0186c08, args=f01e4000 1 f01e2bf0 fd020000
> f0186d88 f01e2ff4
> Called from f0140a38, fp=f0186c68, args=f01e563c 1cc5 f01e5652
> ff000008 ff000008 4400fe1
> Called from f0054f44, fp=f0186cc8, args=f0186d8c 22 ffffffff a f0186d8c 22
> Called from f0054724, fp=f0186d28, args=f0186d8c 22 5 0 ffffffff 0
> Called from f0054494, fp=f0186e18, args=f01e2173 f0186ec0 5 0 f0186e10 0
> Called from f0132e7c, fp=f0186e78, args=f01e2173 0 0 0 f0186e98 f0186ec0
> Called from f01375e0, fp=f0186ef8, args=f01e43c2 ffd2e31c f01e28f4 0
> f01e2b1c ffffffff
> Called from f0005250, fp=f0186f58, args=400 f01aa000 f9fbe000 0 200 f0178570
> Called from ffc11c94, fp=0, args=4000 3ffb78 0 ffc37570 ffc259d0 1
> End traceback...
> fault and calling cmd: trap 9 sp f0186b20 pc f013f870 npc f013f874
> stopped at      0:              unimp   0x0
> kadb>  $c
> PR_BASE() + 0
> kadb>  f0054f44?ai
> _writekmsg+0x68:                _writekmsg+0x68:                call
>   _mpprom_write_nl7
> kadb>  f0005250?ai
> _firsthighinstr+0xd8:           _firsthighinstr+0xd8:           call
>   _early_startup
> kadb>
>
> Woo-hoo!

Hi Artyom,

I've just posted a patchset to lower the virtual memory allocation range 
- can you test with that patchset applied, plus my patch in 
http://www.openfirmware.info/pipermail/openbios/2013-April/007572.html 
means that you can still load kadb on your image?

If that works, I'll put together a patch to move the alignment rounding 
up behaviour in core OFMEM, as detailed in the specification.


ATB,

Mark.