On 12/01/17 12:57, Hervé Poussineau wrote: > Le 11/01/2017 à 17:58, Artyom Tarasenko a écrit : >> Hi Hervé, >> >> nice work! >> >> On Thu, Dec 29, 2016 at 11:12 PM, Hervé Poussineau >> <hpous...@reactos.org> wrote: >>> Hi, >>> >>> This patchset adds the emulation of the IBM RS/6000 7020 (40p). The >>> real machine is >>> able to run AIX (up to 4.3.3), Windows NT (up to 4.0 SP1), the beta >>> of OS/2 PowerPC, >>> Solaris, Linux, NetBSD/PReP ... >>> >>> I've tested current emulation with Open Hack'Ware, OpenBIOS and >>> official firmware. >>> >>> Linux kernel starts, and freezes during boot (like with 'prep' machine). > > I already saw a regression during 2.7.0 cycle with 603 CPU. However, I > was unable to provide kernel source, so Benjamin was unable to find the > problem. > http://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03760.html > >> >> If prep can't do it anymore, it looks like a regression. I definitely >> remember seen a sitting penguin and a login prompt ~ 2 years ago. At >> least with OFW. >> >>> Windows NT starts up to the point where it wants to change endianness. >> >> I hit that with Solaris/PPC a few years back as you published your >> previous attempt. Do you know what is missing? I guess CPU endianness >> switch emulation is working because it is used in the newer POWER >> CPUs. Is it just the systemIO which has to be improved, or is it more? > > Yes, PReP System I/O has LE flag which is not implemented. > You may be interested by > ftp://ftp.software.ibm.com/rs6000/technology/spec/endian.ps > which deals about endianness switching, with some code from Windows NT/PPC > >> >>> Other OSes have not been tested. >>> >>> This machine is a superset of the 'prep' one, because we know exactly >>> what is/should >>> emulated, and that operating system list running on it is quite wide. >>> I hope that 'prep' machine can be deprecated soon and then later >>> removed. >> >> Would be nice to keep 'prep' until the 40p can boot Linux and NetBSD >> 6.1.3 (this version used to work with -M prep last time I checked). > > Some Linux kernels seem to work, some other ones seem to not work (hang > while booting) > I've not searched why. > > I tried NetBSD 6.1.3/PReP. > cdroms/harddisks don't boot anymore with Open Hack'Ware since some > changes in IDE core > Kernel boots better with 40p than with prep > > ==================================================== > prep: > > Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, > 2006, 2007, 2008, 2009, 2010, 2011, 2012 > The NetBSD Foundation, Inc. All rights reserved. > Copyright (c) 1982, 1986, 1989, 1991, 1993 > The Regents of the University of California. All rights reserved. > > NetBSD 6.1.3 (INSTALL) > Model: Qemu > total memory = 128 MB > avail memory = 119 MB > panic: call to null-ptr from 0x0 > > The operating system has halted. > Please press any key to reboot. > > ==================================================== > 40p/Open Hack'Ware: > > Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, > 2006, 2007, 2008, 2009, 2010, 2011, 2012 > The NetBSD Foundation, Inc. All rights reserved. > Copyright (c) 1982, 1986, 1989, 1991, 1993 > The Regents of the University of California. All rights reserved. > > NetBSD 6.1.3 (INSTALL) > Model: Qemu > total memory = 128 MB > avail memory = 119 MB > mainbus0 (root) > cpu0 at mainbus0: 604 (Revision 1.3), ID 0 (primary) > cpu0: HID0 0xc084<ICE,DCE,SGE,BHT>, powersave: 1 > cpu0: 0.00 MHz > Couldn't find PNP data for bus 0 devfunc 0x0 > pnpbus0 at mainbus0 > pci0 at mainbus0 bus 0: indirect configuration space access > pchb0 at pci0 dev 0 function 0 > pchb0: vendor 0x1057 product 0x4801 (rev. 0x00) > siop0 at pci0 dev 1 function 0: Symbios Logic 53c810 (fast scsi) > siop0: couldn't map interrupt > vga0 at pci0 dev 2 function 0: vendor 0x1234 product 0x1111 (rev. 0x02) > wsdisplay0 at vga0 (kbdmux ignored) > drm at vga0 not configured > pcn0 at pci0 dev 3 function 0: AMD PCnet-PCI Ethernet > pcn0: Am79c970A PCnet-PCI II rev 0, Ethernet address 52:54:00:12:34:56 > pcn0: unable to map interrupt > pcib0 at pci0 dev 11 function 0: vendor 0x8086 product 0x0484 (rev. 0x03) > isa0 at pcib0 > com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo > com0: console > com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo > pckbc0 at isa0 port 0x60-0x64 > pckbd0 at pckbc0 (kbd slot) > pckbc0: using irq 1 for kbd slot > wskbd0 at pckbd0 (mux ignored) > vmmask 10000000 schedmask 10000000 highmask 70000000 > boot device: mainbus0 > root on md0a dumps on md0b > root file system type: ffs > WARNING: no TOD clock present > WARNING: using filesystem time > WARNING: CHECK AND RESET THE DATE! > erase ^H, werase ^W, kill ^U, intr ^C, status ^T > Terminal type? [vt100] > > ==================================================== > 40p/official firmware with cdrom boot: > > Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, > 2006, 2007, 2008, 2009, 2010, 2011, 2012 > The NetBSD Foundation, Inc. All rights reserved. > Copyright (c) 1982, 1986, 1989, 1991, 1993 > The Regents of the University of California. All rights reserved. > > NetBSD 6.1.3 (INSTALL) > Model: IBM PPS Model 6015 > total memory = 128 MB > avail memory = 119 MB > trap: kernel read DSI trap @ 0x481b4cae by 0x2a4f50 (DSISR 0x40000000, > err=14), lr 0x140e84 > panic: trap > > The operating system has halted. > Please press any key to reboot. > ==================================================== > > OpenBIOS doesn't support PReP boot partitions (type 0x41) nor PReP > kernels so this is a no-go yet.
Just out of interest, is it just the PReP boot partition support that is missing from OpenBIOS? If so, that should be fairly easy to implement if there's a spec lying around somewhere. It would be great if we could finally remove OHW from QEMU :) ATB, Mark.
