[ sorry for the earlier noise; accidentally hit "send" ]
On 2/12/24 04:32, Peter Maydell wrote:
QEMU includes some models of old Arm machine types which are
a bit problematic for us because:
* they're written in a very old way that uses numerous APIs that we
would like to get away from (eg they don't use qdev, they use
qemu_system_reset_request(), they use vmstate_register(), etc)
* they've been that way for a decade plus and nobody particularly has
stepped up to try to modernise the code (beyond some occasional
work here and there)
* we often don't have test cases for them, which means that if we
do try to do the necessary refactoring work on them we have no
idea if they even still work at all afterwards
All these machine types are also of hardware that has largely passed
away into history and where I would not be surprised to find that
e.g. the Linux kernel support was never tested on real hardware
any more.
So I would like to explore whether we can deprecate-and-drop
some or all of them. This would let us delete the code entirely
rather than spending a long time trying to bring it up to scratch
for a probably very small to nonexistent userbase. The aim of this
email is to see if anybody is still using any of these and would be
upset if they went away. Reports of "I tried to use this machine
type and it's just broken" are also interesting as they would
strongly suggest that the machine has no real users and can be
removed.
The machines I have in mind are:
PXA2xx machines:
akita Sharp SL-C1000 (Akita) PDA (PXA270)
borzoi Sharp SL-C3100 (Borzoi) PDA (PXA270)
connex Gumstix Connex (PXA255)
mainstone Mainstone II (PXA27x)
spitz Sharp SL-C3000 (Spitz) PDA (PXA270)
terrier Sharp SL-C3200 (Terrier) PDA (PXA270)
tosa Sharp SL-6000 (Tosa) PDA (PXA255)
verdex Gumstix Verdex Pro XL6P COMs (PXA270)
z2 Zipit Z2 (PXA27x)
I test akita, borzoi, spitz, and terrier. Upstream Linux removed support
for mainstone, tosa, and z2 from the Linux kernel as of version 6.0, so
I am no longer testing those.
I never managed to boot connex or verdex.
OMAP1 machines:
cheetah Palm Tungsten|E aka. Cheetah PDA (OMAP310)
sx1 Siemens SX1 (OMAP310) V2
sx1-v1 Siemens SX1 (OMAP310) V1
I test sx1. I don't think I ever tried cheetah, and I could not get sx1-v1
to work.
OMAP2 machines:
n800 Nokia N800 tablet aka. RX-34 (OMAP2420)
n810 Nokia N810 tablet aka. RX-44 (OMAP2420)
I never managed to get those to boot the Linux kernel.
The one SA1110 machine:
collie Sharp SL-5500 (Collie) PDA (SA-1110)
I do test collie.
All the ones I use still boot the latest Linux kernel.
Obviously if we can remove all the machines that used a given
SoC, that's much more effective than if we just delete one or two.
I don't have any test images for the SA1110 or OMAP1 machines,
so those are the ones I am most keen to be able to drop.
I do have test images for a few of the pxa2xx and the OMAP2 machines.
I don't mind dropping them, just listing what I use for testing the
Linux kernel. I suspect I may be the only "user" of those boards,
though, both in Linux and qemu.
Guenter
