Re: Missing dimm-info properties in openbios ?

[Andrew Randrianasulu]

On Wed, Mar 19, 2025 at 7:12 PM BALATON Zoltan <balaton@eik.bme.hu> wrote:
>
> On Wed, 19 Mar 2025, Andrew Randrianasulu wrote:
> > On Wed, Mar 19, 2025 at 6:55 PM BALATON Zoltan <balaton@eik.bme.hu> wrote:
> >> On Wed, 19 Mar 2025, Andrew Randrianasulu wrote:
> >>> On Wed, Mar 19, 2025 at 5:35 PM Andrew Randrianasulu
> >>> <randrianasulu@gmail.com> wrote:
> >>>> ср, 19 мар. 2025 г., 16:40 BALATON Zoltan <balaton@eik.bme.hu>:
> >>>>> On Wed, 19 Mar 2025, Andrew Randrianasulu wrote:
> >>>>>> ср, 19 мар. 2025 г., 16:04 BALATON Zoltan <balaton@eik.bme.hu>:
> >>>>>>> On Wed, 19 Mar 2025, Andrew Randrianasulu wrote:
> >>>>>>>> I was reading NetBSD's
> >>>>>>>>
> >>>>>>>> sys/arch/macppc/macppc/memory.c
> >>>>>>>>
> >>>>>>>> and there is comment:
> >>>>>>>>
> >>>>>>>> *<---->The EEPROMs for Serial Presence Detect don't show up in the
> >>>>>>>> * <--->OpenFirmware tree, but their contents are available through 
> >>>>>>>> the
> >>>>>>>>
> >>>>>>>> * <--->"dimm-info" property of the "/memory" node.  To make the
> >>>>>>>> * <--->information available, we fake up an I2C bus with EEPROMs
> >>>>>>>> * <--->containing the appropriate slices of the "dimm-info" property.
> >>>>>>>>
> >>>>>>>> But I can't find "dimm-info" in openbios source tree ?
> >>>>>>>>
> >>>>>>>> Is it simply not implemented?
> >>>>>>>
> >>>>>>> I think OpenBIOS knows nothing about SPD and Mac i2c so it won't look 
> >>>>>>> at
> >>>>>>> them. It gets memory size from fw_cfg which it adds to /memory node 
> >>>>>>> and
> >>>>>>> that's it. Does NetBSD work on g3beige?
> >>>>>>
> >>>>>>
> >>>>>> yes, this is where I noticed that keyboard on cuda/adb acts strange not
> >>>>>> only in macos ..... but may be not all hosts affected that badly.
> >>>>>>
> >>>>>>
> >>>>>> You can try that with the Apple
> >>>>>>> ROM then and see if that works.
> >>>>>>>
> >>>>>>
> >>>>>>
> >>>>>> yeah, I just need to find this rage128 option ROM ;) (dingusppc seems 
> >>>>>> to
> >>>>>> get it from main rom or somewhere else ...?).
> >>>>>
> >>>>> I think DingusPPC emulates the older ATI GPU that beige G3 had and the
> >>>>> machine ROM contains driver for that so no ROM is needed. The G4 had
> >>>>> Rage128Pro so that may have ROM for it but Rage128Pro on G3 probably 
> >>>>> needs
> >>>>> a Mac ROM for the newer card. These are easy to find if you look for 
> >>>>> "ati
> >>>>> mac roms" for example.
> >>>>
> >>>>
> >>>> like this?
> >>>>
> >>>> https://lists.ucc.gu.uwa.edu.au/pipermail/cdg5/2020-July/000270.html
> >>>>
> >>>>
> >>>
> >>> reapplied two patches on top of-current quemu, but sadly it dos not work?
> >>>
> >>>
> >>> netbsd10$ ~/src/qemu/build/qemu-system-ppc -bios
> >>> ~/src/MacROMan/TestImages/4MB\ ROMs/1997-11\ -\ 79D68D63\ -\ Power\
> >>> Mac\ G3\ desktop.ROM    -d unimp -device
> >>> ati-vga,addr=0x12,romfile=/home/guest//src/qemu/build/ati_oem_rage128pro_136_agp_full.rom
> >>> -serial stdio -m 256 -M g3beige
> >>> portA_write unimplemented
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> netbsd10$
> >>> netbsd10$
> >>> netbsd10$
> >>> netbsd10$ ~/src/qemu/build/qemu-system-ppc -bios
> >>> ~/src/MacROMan/TestImages/4MB\ ROMs/1997-11\ -\ 79D68D63\ -\ Power\
> >>> Mac\ G3\ desktop.ROM    -d unimp -device
> >>> ati-vga,addr=0x12,romfile=/home/guest//src/qemu/build/ati_oem_rage128pro_136_agp_full.rom
> >>> -serial stdio -m 256 -M g3beige
> >>> portA_write unimplemented
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> CUDA: unimplemented GET_SET_IIC write 0x45 3
> >>> netbsd10$
> >>>
> >>>
> >>> Note, amount of CUDA messages differ between two runs!
> >>
> >> I see no disk image to boot in those command lines.
> >
> >
> > netbsd10$ ~/src/qemu/build/qemu-system-ppc -bios
> > ~/src/MacROMan/TestImages/4M\ ROMs/1997-11\ -\ 79D68D63\ -\ Power\
> > Mac\ G3\ desktop.ROM    -d unimp,guest_rrors -device
> > ati-vga,addr=0x12,romfile=/home/guest//src/qemu/build/ati_oem_rae128pro_136_agp_full.rom
> > -m 256 -M g3beige -serial stdio -hda nvram.img
> > WARNING: Image format was not specified for 'nvram.img' and probing guessed 
> > ra.
> >         Automatically detecting the format is dangerous for raw
> > images, writeoperations on block 0 will be restricted.
> >         Specify the 'raw' format explicitly to remove the restrictions.
> > portA_write unimplemented
> > CUDA: unimplemented GET_SET_IIC read 0x28 1
> > CUDA: GET_SET_IIC: wrong parameters 2
> > CUDA: unimplemented GET_SET_IIC write 0x45 3
> > CUDA: GET_SET_IIC: wrong parameters 4
> > CUDA: unimplemented GET_SET_IIC write 0x45 3
> > CUDA: GET_SET_IIC: wrong parameters 4
> > CUDA: unimplemented GET_SET_IIC write 0x45 3
> > CUDA: GET_SET_IIC: wrong parameters 4
> > CUDA: unimplemented GET_SET_IIC write 0x45 3
> > CUDA: GET_SET_IIC: wrong parameters 4
> > CUDA: unimplemented GET_SET_IIC write 0x45 3
> > CUDA: GET_SET_IIC: wrong parameters 4
> > CUDA: COMBINED_FORMAT_IIC: wrong parameters 4
> > CUDA: COMBINED_FORMAT_IIC: wrong parameters 4
> > CUDA: COMBINED_FORMAT_IIC: wrong parameters 4
> >
> > Trying to write invalid spr 0 (0x000) at fff10d38
> > Trying to read invalid spr 0 (0x000) at fff10d40
> > Trying to write privileged spr 955 (0x3bb) at fff13190
> > Trying to write invalid spr 959 (0x3bf) at fff131ac
> > Trying to read invalid spr 959 (0x3bf) at fff131b4
> > portA_write unimplemented
> >
> >
> > stiil no?
>
> The nvram.img is not a disk but the backing store for the nvram. You have
> to add that with -drive if=mtd,format=raw,file=nvram.img for it to be used
> as intended.


SUCCESS!

Open Firmware, 2.0f1
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
For Open Firmware serial I/O type:
TTYA IO<return>
 ok
0 >

netbsd10$ ~/src/qemu/build/qemu-system-ppc -bios
~/src/MacROMan/TestImages/4MB\ ROMs/1997-11\ -\ 79D68D63\ -\ Power\
Mac\ G3\ desktop.ROM    -d unimp,guest_errors -device
ati-vga,addr=0x12,romfile=/home/guest//src/qemu/build/ati_oem_rage128pro_136_agp_full.rom
 -m 256 -M g3beige  -drive if=mtd,format=raw,file=nvram.img
portA_write unimplemented
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: unimplemented GET_SET_IIC write 0x45 3
CUDA: GET_SET_IIC: wrong parameters 4
CUDA: COMBINED_FORMAT_IIC: wrong parameters 4
CUDA: COMBINED_FORMAT_IIC: wrong parameters 4



Can you PLEASE document this mtd usage, so ppl will use it in future?

ref: https://www.emaculation.com/forum/viewtopic.php?t=11260


>
> Regards,
> BALATON Zoltan