On Thu, 7 Oct 2004, Tom Rini wrote:
> Since these changes can go right into a linux-2.6 tree and out to
> Linus, I should be able to get BitKeeper to happily merge these
> changes and your changes.
since i already went to the trouble to figure out what it would take
to do this, i'll just post it in case any of it is helpful.
first, i assume that anything related to UARTs in arch/ppc/8xx_io/ can
be deleted (the newer stuff being in drivers/serial/cpm_uart/). this
would include uart.c, and any references to UARTs in both Kconfig and
Makefile. so that stuff is pretty easily deletable.
regarding Kconfig, that currently defines the following config
variables related to UARTs (all of the latter ones dependent on the
first, so if you delete the first, all the rest pretty well have to
vanish as well):
CONFIG_8xx_UART
CONFIG_SMC2_UART
CONFIG_ALTSMC2
CONFIG_CONS_SMC2
CONFIG_USE_SCC_IO
if you get rid of that chunk of Kconfig, then you better make sure
there's nothing in the rest of the kernel source that refers to any of
those config variables in any meaningful way. other than uart.c, some
of these variables are listed in arch/ppc/configs/*, so you'd probably
want to clean up any of those defconfig files while you're at it.
(as an example, the file "SM850_defconfig" contains the line
CONFIG_CONS_SMC2=y
not good. :-)
now, once all that stuff is taken care of, i'm assuming all
UART-related stuff and its configuration is found under
drivers/serial/cpm_uart/, and the kernel config menu for that stuff
under
Device drivers ->
Character devices ->
Serial drivers
apparently, according to this menu, i can walk through and select
every single serial port possibility: SMC[12] and SCC[1234]. but even
after you do that, you can apparently still go to the "MPC8xx" menu
and select to put ethernet on, say, SCC1. i'm pretty sure you
shouldn't be able to select that SCC1 is for both UART and ethernet
simultaneously. just need to add more dependencies to some Kconfig
files, i suspect.
thoughts?
rday
