[OpenBIOS] Some SPARC32 Patches

[Mark Cave-Ayland]

On 30/01/14 21:55, Olivier Danet wrote:
> Hello !
>
> Here are a few patches for QEMU and OpenBIOS, about SPARC32, grouped
> into two
> diffs:
>
> OpenBIOS : http://temlib.org/pub/openbios_nn.diff
> QEMU : http://temlib.org/pub/qemu_nn.diff
>
> Changes:
>
> OpenBIOS
> * SparcStation10/20 mode fix (drivers/iommu.c, drivers/sbus.c)
>
> - TCX properties (drivers/tcx.fs)
> - next-property (forth/device/property.fs)
> - Keyboard property (drivers/escc.c)
>
> + Memory allocation/deallocation (arch/sparc32/lib.c,
> arch/sparc32/ofmem_sparc32.c,
> libopenbios/ofmem_common.c, arch/sparc32/romvec.h)
> + a.out file loading (libopenbios/aout_load.c)
> + Dummy TICK counter (arch/sparc32/romvec.c)
> + Interrupt/Timer properties (include/drivers/drivers.h,
> forth/device/property.fs,
> drivers/obio.c)
>
> QEMU
> - TCX Hardware acceleration : Blitter, Stippler, HW cursor
> (hw/display/tcx.c,
> hw/sparc/sun4m.c)
> - "!TC on DATA XFER" warning under NetBSD (hw/scsi/esp.c)
> + Timer Run/Stop bit correction (hw/timer/slavio_timer.c)
>
> TCX emulation with acceleration seems good enough, although it is
> incomplete and
> it is probably impossible to implement the 24bits mode accurately and
> efficiently in QEMU.
>
> I will post each patch separately on the two mailing lists. TCX patches
> should be synchronised : OpenBIOS cannot advertise an hardware cursor until
> it is actually implemented.
>
> One more thing.
>
> After NetBSD and TCX acceleration, I tried NextSTEP, which needs the
> patches marked + above.
> Alas, this is not enough to make it run.
> Maybe it is because QEMU SCSI disk and ESP emulation are too fast.
>
> Olivier

Hi Olivier,

These look great, and I can already see things that could potentially 
fix a few bug reports I've received off-list. Looking forward to 
receiving the unsquashed versions for review :)


ATB,

Mark.