Serial

Serial

[Giuliano Pochini]

Does the "stealth" serial port for blue-G3 work with Linux ?


Bye.

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

paul-rsync: make zImage fails

[Brad Midgley]

it's been a long time since i've gotten a chrp image to work, but the
current sources can't do it:

main.c: In function `chrpboot':
main.c:43: conflicting types for `_start'
main.c:29: previous declaration of `_start'

is it an unfortunate name collision, or is one of these right and one
wrong?

 extern char _start[], _end[];
   ...
 extern char _start;

Brad
Turbolinux Frontier Group
brad@turbolinux.com | http://www.turbolinux.com/~brad/


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: paul-rsync: make zImage fails

[Olaf Hering]

On Thu, Jun 15, Brad Midgley wrote:

>
> it's been a long time since i've gotten a chrp image to work, but the
> current sources can't do it:
>
> main.c: In function `chrpboot':
> main.c:43: conflicting types for `_start'
> main.c:29: previous declaration of `_start'
>
> is it an unfortunate name collision, or is one of these right and one
> wrong?
>
>  extern char _start[], _end[];
>    ...
>  extern char _start;

--- linux.nokconf/arch/ppc/chrpboot/main.c      Thu Jun 15 20:31:48 2000
+++ linux.chrp/arch/ppc/chrpboot/main.c Thu Jun 15 23:18:47 2000
@@ -40,9 +40,9 @@
     void *dst;
     unsigned char *im;
     unsigned initrd_start, initrd_size;
-    extern char _start;
+   /* extern char _start;

-    printf("chrpboot starting: loaded at 0x%x\n\r", &_start);
+    printf("chrpboot starting: loaded at 0x%x\n\r", &_start); */

     if (initrd_len) {
        initrd_size = initrd_len;


works fine here.


Gruss Olaf

--
 $ man clone

BUGS
       Main feature not yet implemented...

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Serial

[Dan Malek]

Giuliano Pochini wrote:
>
> Does the "stealth" serial port for blue-G3 work with Linux ?

I use them in my old iMac, new iMac (rev. D), iMac DV, and in my G4
server.  If the blue-G3 uses the same kind of modem as any of these,
and if the Stealth folks claim it will work in the G3, I would suspect
it works fine.  There is a challenge with the iMac DV, because they
don't make a card specifically for that machine.  I used a G4 version,
removed the header pins and soldered the cable directly to the board.
Tight fit, but it works.


	-- Dan

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Serial

[Benjamin Herrenschmidt]

On Fri, Jun 16, 2000, Dan Malek <dan@netx4.com> wrote:

>> Does the "stealth" serial port for blue-G3 work with Linux ?
>
>I use them in my old iMac, new iMac (rev. D), iMac DV, and in my G4
>server.  If the blue-G3 uses the same kind of modem as any of these,
>and if the Stealth folks claim it will work in the G3, I would suspect
>it works fine.  There is a challenge with the iMac DV, because they
>don't make a card specifically for that machine.  I used a G4 version,
>removed the header pins and soldered the cable directly to the board.
>Tight fit, but it works.

I confirm, it works on the B&W G3, it's plugged on the good old SCCs of
the mac-io "coffee-machine"

Ben.


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Serial

[Hyun-Joon Cha]

Hello.

I'm using 8xxrom-0.3.0 for boot loader and MVista-2.2.13 for kernel.
I tried to remove serial driver for some reason.

I have 4 questions abou it.

0. If I remove it, will board boot correctly?
1. Can I expect some performance gain with removal?
2. Are there any easy way to do it?
3. Where is most proper location for doing it? 8xxrom, m8xx_tty.c at mbxboot, or uart.c at 8xx_io?

Thanks in advance.

Have a nice day.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: Serial

[Wolfgang Denk]

In message <051301c01160$d5e0b560$1952df8d@SOYANG> you wrote:
>
> I'm using 8xxrom-0.3.0 for boot loader and MVista-2.2.13 for kernel.

Forget 8xxrom. It's dead.

Use the new PPCBoot instead. See http://ppcboot.sourceforge.net/

> I tried to remove serial driver for some reason.

What are these reasons? Do you have  another  interface  to  interact
with the board instead?

> I have 4 questions abou it.

The following answers are for PPCBoot code.

> 0. If I remove it, will board boot correctly?

Yes, it will. But you will still have a lot of dead code (interactive
commands) which you might remove as well.

> 1. Can I expect some performance gain with removal?

What type of "performance" do you mean?

Linux will not run any faster when you remove the serial driver  from
the boot loader.

If you're talking about boot times, the difference is minimal  -  you
can    get   nearly   the   same   with   PPCBoot   configured   with
CONFIG_BOOTCOMMAND  set  to  the  command  you  need  to   boot   and
CONFIG_BOOTDELAY set to 0 so it will boot immediately.

> 2. Are there any easy way to do it?

Just remove the relevant code.

But to be  honest:  I  see  a  lot  of  disadvantages,  and  no  real
advantages.  But you didn't tell us your reasons, so I cannot comment
on this.

Hope this helps.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
A day without sunshine is like night.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: Serial

[Graham Stoney]

Wolfgang Denk writes:
> > 1. Can I expect some performance gain with removal?
...
> Linux will not run any faster when you remove the serial driver  from
> the boot loader.

Well, it will boot quite a bit quicker.  If you have no serial port, or are
building a production system with no need for kernel messages, it's possible
to reduce boot time and kernel memory usage with my CONFIG_MESSAGES patch,
at:
    http://members.xoom.com/greyhams/linux/patches/2.2/messages.patch

Regards,
Graham
--
Graham Stoney
Principal Hardware/Software Engineer
Canon Information Systems Research Australia
Ph: +61 2 9805 2909  Fax: +61 2 9805 2929

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/