I think the original poster is trying to use a G3 upgrade that fits in 
the L2 cache slot. Is your bootloader able to enable that kind of 
processor upgrade?

Matt Reilly


On Apr 4, 2005, at 7:55 PM, Tim Kelly wrote:

> On Mon, 4 Apr 2005 16:02:11 -0700
> Adam Kranzel <adam@blacktabby.org> wrote:
>
>> Hi all,
>>
>> I've recently acquired one of the above machines, and it works quite
>> well with NetBSD (2.0) so far, however I've not figured out how to get
>> NetBSD to recognize the G3 upgrade.
>> Anyone have ideas?
>> I'm updating it to -CURRENT right now, just in case that helps.
>
> While surely several people will step forward to discredit my
> suggestion and tell you to compile the value into the kernel in a
> config file, I think compiling the L2CR value into the kernel is crude.
> I added dynamic L2 cache configuring to a bootloader some time ago:
>
> http://www.dialectronics.com/bootloader
>
> The page is a bit out of date. I have two newer versions available:
>
> http://www.dialectronics.com/bootloader/boot25k.xcf
>
> which works with non-APM systems (yours is not)
>
> and
>
> http://www.dialectronics.com/bootloader/ofwbootF
>
> which requires installboot/bootxx to install and is for APM systems (as
> in, the partition map is Apple Partition Map, which yours is, if I'm
> not mistaken, in which case your life is easier).
>
> boot25k.xcf is my regular bootloader. ofwbootF is not tested, but I've
> built ofwboot.xcf from the same source code and had no problems. No
> promises on ofwbootF.
>
> Both bootloaders will not enable the cache by default. I added
> bootloader flags to both, and the -l flag will enable the cache. The
> bootloader flag must preceed the kernel name:
>
> boot ultra1:1,\boot25k.xcf -l bsd
>
> would boot from an MBR partitioned system and attempt to enable the
> cache dynamically. Unlike compiling the value into the kernel, this
> method is not permanent and the kernel can be used with other CPUs.
>
> For an APM system, after installation with installboot, boot without
> enabling the cache, to make sure it works.
>
> Alternatively, you can copy boot25k.xcf to a PC formatted floppy and
> boot from it with the -l flag, which will print out an L2CR value that
> can then be compiled in.
>
> boot fd:1,\boot25k.xcf -l
>
> The bootloader and kernel locations are quite decoupled, so if you have
> a CD or tftpd server handy, you can boot from the bootloader on floppy
> and the kernel elsewhere, as long as Open Firmware can read the
> partition map (which means not on Old World Macs, not yet). I don't use
> NFS for network booting of kernels, as I replaced this with tftp 
> booting
> for MD and INSTALL kernels. Something like
>
> boot fd:1,\boot25k.xcf -l enet:,\netbsdMD.gz
>
> will get the bootloader from the floppy and the compressed kernel image
> from the tftp server. You can also just boot from the tftp server:
>
> boot enet:,\boot25k.xcf netbsdMD.gz
>
> Hopefully one of the above scenarios will work out for you to test the
> bootloader and see how well it enables (or doesn't) the L2 cache on 
> your
> upgrade card.
>
> tim
>