Re: [PATCH 00/11] Atari Ethernet/USB patch series - for upstream and debian-kernel

Michael Schmitz
2013-03-29T01:09:58Z

Christian,

>>> and removed some not needed drivers. The kernel is now 3698472 bytes big.
>>> I still find that huge, but it allowed me to boot without a memfile to
>>> reduce the RAM! Alas, no SCSI support for the B2060...
>> Not entirely unexpected.
> yup. CONFIG_SCSI_ZORRO7XX is enabled, will this be the new driver?

No, that's a different chipset, not ESP.

>>> The official Debian package fails to cross-compile when building the
>>> hid-microsoft module, maybe its time to disable that? Probably this is not
>>> set in the m68k config, but in the "main" debian config. I am not sure if I
>>> can override that, it may be easier to build kernels (for testing and the
>> Why not? Just add another m68k patch that removes this option from
>> the defconfig used.
> As far as I remember, the config is combined of a generic config, an m68k
> config, and an amiga config. Each file set only part of the total config,

And you can't patch the generic config? Not that I'd want to submit that
as a patch against the kernel source, of course.

> probably so that the kernels across all arches support more of less the same
> features. Thats a good idea, but I think many drivers are useless for the
> buildds, by removing them the kernel can fit into memory again, just barely.

That sort of stuff should be built as modules anyway.

> The HID drivers seem to be enabled in the official kernel, which runs on
> kullervo, I don't seem to be able to switch off just the microsoft one.
> Maybe by modifying the generic config, but I am afraid the magical package
> building breaks again, genconfig.py does not run on my testing box, not sure
> why. In Geert's tree, memcmp is not used in the driver, thats probably why
> this one builds:
>
> @@ -47,9 +46,9 @@
> rdesc[559] = 0x45;
> }
> /* the same as above (s/usage/physical/) */
> - if ((quirks & MS_RDESC_3K) && *rsize == 106 &&
> - !memcmp((char []){ 0x19, 0x00, 0x29, 0xff },
> - &rdesc[94], 4)) {
> + if ((quirks & MS_RDESC_3K) && *rsize == 106 && rdesc[94] == 0x19 &&
> + rdesc[95] == 0x00 && rdesc[96] == 0x29 &&
> + rdesc[97] == 0xff) {
> rdesc[94] = 0x35;
> rdesc[96] = 0x45;
> }

Looks like it - we'd either need memcmp, or use above patch to sanitize
the HID driver.

I don't think I have seen that patch on m68k-queue though.

>
>> No idea really - how are the kernel packages built otherwise?
> I tried: 4.5 Building a custom kernel from Debian kernel source:
> http://kernel-handbook.alioth.debian.org/ch-common-tasks.html
>
> with linux-source-3.8, which is easier to modify than the linux source
> package (it does not run genconfig for one). Cross-compiling is easy:
> make ARCH=m68k CROSS_COMPILE=m68k-linux-gnu- deb-pkg
>
> but it creates the same failure due to memcmp. I wonder how the debian
> packages have been built, or maybe the cross-compilers are outdated on my
> system?

That might be the case - I've had to patch around stuff that was
suddenly expected to be provided by the compiler on occasion.

> The kernel packages are built with python magic, it seems. kernel-package
> does not seem to be used anymore. You do not look at the kernel for four
> and a half years, and BOOM, suddenly everything has changed!

I'm amazed that I can still build Geert's tree with gcc 3.3.6 :-)

Anyway, I'll poke around a bit on IJ's virtual machine, maybe it does
work there.

Cheers,

Michael