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Date:   Tue, 1 Feb 2000 15:45:57 +0100
From: Per Borgentun <e4borgen@etek.chalmers.se>
To: linux-arm@vger.rutgers.edu
Subject: arm jre ?
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Hello,

 Does anyone know if there are any working jre for the strongArm
 running arm-linux with glibc-2.1.2 ?
 
 I tried jdk-1.1.8 but that seems to be compiled against
 glibc-2.0 (I'm using glibc-2.1.2)
 Does anyone have a jdk compiled against glibc-2.1.* ?
 
 
 I also tried kaffe 1.0.5 ( I got it to compile after setting
 --host=arm-linux --target=arm-linux on my pentium machine)
 but it says:
  BUG IN DYNAMIC LINKER ld.so: ../sysdeps/arm/dl-machine.h: 450: 
  elf_machine_rel: Assertion `! "unexpected dynamic reloc type"' failed! 
 when I try to run my HelloWorld progam.
  
 I'm using binutils 2.9.5.0.14, glibc-2.1.2, gcc-2.95.2 
 
Thanks.
/Per  Borgentun e4borgen@etek.chalmers.se 

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From: Ralph Siemsen <ralphs@netwinder.org>
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Per Borgentun wrote:

>  I also tried kaffe 1.0.5 ( I got it to compile after setting
>  --host=arm-linux --target=arm-linux on my pentium machine)
>  but it says:
>   BUG IN DYNAMIC LINKER ld.so: ../sysdeps/arm/dl-machine.h: 450:
>   elf_machine_rel: Assertion `! "unexpected dynamic reloc type"' failed!
>  when I try to run my HelloWorld progam.

Presumably the target is a NetWinder - this message is emitted by the
loader when running code with 24-bit relocs.  Chances are you have not
built the package using -fpic option, or the cross compiler is not
configured quite right.

-- 
Ralph Siemsen -- ralphs@netwinder.org

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From owner-linux-arm@lists.arm.linux.org.uk  Wed Feb  2 06:03:36 2000
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Date: Tue, 1 Feb 2000 22:02:20 -0800 (PST)
From: Eric Engstrom <eengstro@falcon.csc.calpoly.edu>
To: linux-arm@lists.arm.linux.org.uk
Subject: Building a cross compiler
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I'm trying to build a cross-compiler from x86 Linux to Arm Linux. However,
make dies with the error:

configure: error: installation or configuration problem: C compiler cannot
create executables.

First, I build binutils-2.9.1.0.25 (there seems to be no patches for
anything newer than 2.9.1.0.19a):

	cd binutils-2.9.1.0.25
	./configure --target=arm-linux --prefix=/usr/local
	make
	make install

	[/usr/local/arm-linux is created.]

I set up linux kernel 2.2.13, patch it with patch-2.2.13-rmk1.gz and
linux-2.2.13rmk1-cvs991228.diff.gz, config it (make xconfig), and make
dep. Then, I set the asm and linux links in /usr/local/arm-linux/include.

	tar -xyf linux-2.2.13.tar.bz2
	cd linux
	patch -p1 < ../patch-2.2.13.rmk1
	patch -p1 < ../linux-2.2.13rmk1-cvs991228.diff
	vi Makefile
		[change line: ARCH := $(shell ... to ARCH = arm]
	make mrproper
	make xconfig
		[select Footbridge, save & exit]
	make dep
	cd /usr/local/arm-linux
	mkdir include; cd include
	ln -s /usr/local/src/linux/include/asm-arm asm
	ln -s /usr/local/src/linux/include/linux linux

So far, so good. I then try to configure and build gcc as a cross
compiler, in /usr/local/src:

	tar -xyf egcs-1.1.2.tar.bz2
	cd egcs-1.1.2
	patch -p1 < ../egcs-1.1.2-arm-diff-990325
	cd ..
	mkdir egcs-build; cd egcs-build
	../egcs-1.1.2/configure --target=arm-linux --prefix=/usr/local
	make LANGUAGES="c" cross

	[make dies]

Any ideas?

Eric

Eric Engstrom, Computer Science, Cal Poly, SLO
eengstro@falcon.csc.calpoly.edu
http://www.csc.calpoly.edu/~eengstro



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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb  2 08:59:45 2000
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From: Peter Naulls <peter@erble.freeserve.co.uk>
To: linux-arm@vger.rutgers.edu
Subject: Re: arm jre ?
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In message <20000201154556.A5686@etek.chalmers.se>
          Per Borgentun <e4borgen@etek.chalmers.se> wrote:

>  Does anyone know if there are any working jre for the strongArm
>  running arm-linux with glibc-2.1.2 ?
>  
>  I tried jdk-1.1.8 but that seems to be compiled against
>  glibc-2.0 (I'm using glibc-2.1.2)
>  Does anyone have a jdk compiled against glibc-2.1.* ?
>  
>  
>  I also tried kaffe 1.0.5 ( I got it to compile after setting
>  --host=arm-linux --target=arm-linux on my pentium machine)
>  but it says:
>   BUG IN DYNAMIC LINKER ld.so: ../sysdeps/arm/dl-machine.h: 450: 
>   elf_machine_rel: Assertion `! "unexpected dynamic reloc type"' failed! 
>  when I try to run my HelloWorld progam.

There's also mine, which I've recently ported to ARMLinux - I can
let people have a fiddle if they promise to provide useful feedback.
Sorry, there's no AWT or network support at this time.

Peter

-- 
+---------------------------------------------+-----------------------------+
| Peter Naulls - pnaulls@usa.net              |                             |
| http://free.prohosting.com/~chocky/         | Java and JVM Consultant     |
| Java for RISC OS and ARM - java-arm@usa.net | Technical Author            |
| http://free.prohosting.com/~chocky/java/    | Program performance analyst |
+---------------------------------------------+-----------------------------+

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From owner-linux-arm@lists.arm.linux.org.uk  Wed Feb  2 09:40:57 2000
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Subject: Re: Building a cross compiler 
In-Reply-To: Message from Eric Engstrom <eengstro@falcon.csc.calpoly.edu> 
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>I'm trying to build a cross-compiler from x86 Linux to Arm Linux. However,
>make dies with the error:
>
>configure: error: installation or configuration problem: C compiler cannot
>create executables.

In the target libiberty, right?  Check the mailing list archives, this has 
been discussed many times before.

>	../egcs-1.1.2/configure --target=arm-linux --prefix=/usr/local
>	make LANGUAGES="c" cross

Not that it's the cause of your problem, but you probably want to use gcc-2.95 
rather than egcs-1.1. 

p.



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>Presumably the target is a NetWinder - this message is emitted by the
>loader when running code with 24-bit relocs.  Chances are you have not
>built the package using -fpic option, or the cross compiler is not
>configured quite right.

It'll happen on any ARM machine.  Scott has actually patched ld.so now to 
allow non-PIC shared objects, so we should see less of this in future.

p.



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Philip Blundell wrote:

> It'll happen on any ARM machine.  Scott has actually patched ld.so now to
> allow non-PIC shared objects, so we should see less of this in future.

Correct on both accounts, though numerous libraries also suffer from the
same problem - so it will take a little while yet to sort out all the
occurrences.

-- 
Ralph Siemsen -- ralphs@netwinder.org

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I ran into this yesterday as well, with kaffe-1.0.5.  Where do I find the
patched ld.so?  Is there a way to determine if a .so has been built with
-fpic?  Is it a performance problem to make -fpic the default? 

-Jamey Hicks

-----Original Message-----
From: Philip Blundell [mailto:pb@labs.futuretv.com]
Sent: Wednesday, February 02, 2000 4:42 AM
To: Ralph Siemsen
Cc: linux-arm@vger.rutgers.edu
Subject: Re: arm jre ? 


>Presumably the target is a NetWinder - this message is emitted by the
>loader when running code with 24-bit relocs.  Chances are you have not
>built the package using -fpic option, or the cross compiler is not
>configured quite right.

It'll happen on any ARM machine.  Scott has actually patched ld.so now to 
allow non-PIC shared objects, so we should see less of this in future.

p.



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>Is there a way to determine if a .so has been built with
>-fpic?  Is it a performance problem to make -fpic the default? 

`objdump --dynamic-relocs | grep PC24' will tell you if there are any of the 
offending relocations in a shared object (if yes, chances are it was built 
without -fPIC).  You wouldn't want to make -fpic the default for application 
code but for shared libraries that's the right thing to do.

p.



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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb  2 13:42:32 2000
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Philip Blundell wrote:
> 
> >Is there a way to determine if a .so has been built with
> >-fpic?  Is it a performance problem to make -fpic the default?
> 
> `objdump --dynamic-relocs | grep PC24' will tell you if there are any of the
> offending relocations in a shared object (if yes, chances are it was built
> without -fPIC).  You wouldn't want to make -fpic the default for application
> code but for shared libraries that's the right thing to do.

There are two ways to get PC24 relocs into a shared library.  One is to not
compile with -fPIC, the other is to  link in object modules from a static
library compiled without -fPIC.  It is quite often the latter which is the
cause.

The fix for ld.so requires upgrading glibc to 2.1.3.  It is not available yet. 
This version is not released yet, but should be in a couple of weeks.  If you
are in a hurry you can build your own from the CVS tree on
sourceware.cygnus.com.  

In the testing we have done here with this, this patch to ld.so is not as
effective as I might have hoped.  The PC24 reloc is for a PC relative branch. 
The offset must fit into 12 bits in the opcode.  If the jump is too far, (ie:
exceeds the distance representable in 12 bits) the dynamic linker cannot fix up
the reloc, and the same error message results.   This seems to be the case in a
large number of instances :{ .

The best way to fix this problem is to identify the offending modules, compile
them with -fPIC and relink.

Scott

-- 
Scott Bambrough - Software Engineer
REBEL.COM    http://www.rebel.com
NetWinder    http://www.netwinder.org

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Per Borgentun wrote:

>  I also tried kaffe 1.0.5 ( I got it to compile after setting
>  --host=arm-linux --target=arm-linux on my pentium machine)
>  but it says:
>   BUG IN DYNAMIC LINKER ld.so: ../sysdeps/arm/dl-machine.h: 450:
>   elf_machine_rel: Assertion `! "unexpected dynamic reloc type"' failed!
>  when I try to run my HelloWorld progam.

Now that I know what to look for, it was easy to find.  The code for the .so
was actually already compiled with -fPIC, but in config/arm/trampolines.c,
there is some inline assembly.  Two versions, actually, one for shared
library, one not.  But the conditional had been hardcoded for not shared
library.  I just took out the 0, and left in the defined().

-Jamey


#if defined(NO_SHARED_VMLIBRARY)
asm(
	START_ASM_FUNC() C_FUNC_NAME(arm_do_fixup_trampoline) "\n"
C_FUNC_NAME(arm_do_fixup_trampoline) ":				\n
	stmdb	sp!,{r0,r1,r2,r3,lr}\n
	mov	r0,ip\n
	bl	" C_FUNC_NAME(soft_fixup_trampoline) "		\n
	mov	ip, r0\n
	ldmia	sp!,{r0,r1,r2,r3,lr}\n
	mov	pc, ip\n
"
	END_ASM_FUNC()
);

#else

asm(
	START_ASM_FUNC() C_FUNC_NAME(arm_do_fixup_trampoline) "\n"
C_FUNC_NAME(arm_do_fixup_trampoline) ":				\n
	stmdb	sp!,{r0,r1,r2,r3,lr}\n
	mov	r0,ip\n
	bl	" C_FUNC_NAME(soft_fixup_trampoline) " (PLT)	\n
	mov	ip, r0\n
	ldmia	sp!,{r0,r1,r2,r3,lr}\n
	mov	pc, ip\n
"
	END_ASM_FUNC()
);

#endif

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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb  2 14:54:46 2000
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Jamey Hicks wrote:
> 
> #if defined(NO_SHARED_VMLIBRARY)
> #else
> 
> asm(
>         START_ASM_FUNC() C_FUNC_NAME(arm_do_fixup_trampoline) "\n"
> C_FUNC_NAME(arm_do_fixup_trampoline) ":                         \n
>         stmdb   sp!,{r0,r1,r2,r3,lr}\n
>         mov     r0,ip\n
>         bl      " C_FUNC_NAME(soft_fixup_trampoline) " (PLT)    \n
>         mov     ip, r0\n
>         ldmia   sp!,{r0,r1,r2,r3,lr}\n
>         mov     pc, ip\n
> "
>         END_ASM_FUNC()
> );
> 
> #endif

This version should be fine for both cases.  The linker will adjust and handle
it correctly when linking statically.

Scott

-- 
Scott Bambrough - Software Engineer
REBEL.COM    http://www.rebel.com
NetWinder    http://www.netwinder.org

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From owner-linux-arm-outgoing@vger.rutgers.edu  Thu Feb  3 00:19:38 2000
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Hi All:
I'd like to use the EBSA 285's mailbox registers
to do some additional primative message passing
between a host machine and the EBSA, are 
these registers being used for anything right now?
The Intel Datasheet says that the 21285 isn't 
using them but I want to make sure that Linux 
hasn't hijacked them for something. Thanks
much,

PS If I'm totally baked on my idea to use these
to pass data between the board and host,
please let me know!

-- 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Benjamin Stocks
Computer Engineering
Milwaukee School of Engineering
email: stocksb@msoe.edu
web:   http://www.msoe.edu/~stocksb
vox:   414.220.9683

"Don't Panic"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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From owner-linux-arm-outgoing@vger.rutgers.edu  Thu Feb  3 04:01:33 2000
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Date:   Wed, 02 Feb 2000 22:02:32 -0500
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Greetings.

I have searched through the archives and found only one mention of using
GDB and ANGEL for kernel debugging. It appears that it is not possible to
utilize GDB and ANGEL for this purpose. The only other way mentioned was
to buy an ICE and use 'printk'. Surely there has to be a better method than
this? Does anyone have a better methodology? Thanks in advance.

-Steve

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Hello,

I followed Chris Rutter's page, and after I build the glibc I get the error 
mentioned at the end.

This is what I did so far:

system: i586 PC + redhat linux 6.0
target: arm-elf
used files:

binutils-2.9.5.0.14.tar.bz2
linux-2.2.12.tar.gz
patch-2.2.12-rmk1.gz
linux-2.2.12rmk1-cvs990915.diff
gcc-core-2.95.1.tar.gz
gcc-2.95-diff-990730.gz
gcc-fold-const.patch
  glibc-2.1.2.tar
  glibc-crypt-2.1.tar
  glibc-linuxthreads-2.1.2.tar

I get the following error...
make[1]: Entering directory
`/home/vijay/glibc-2.1.2/stdio-common'
arm-linux-gcc ../sysdeps/generic/tempname.c -c -O
-Wall -Winline -Wstrict-prototypes -Wwrite-strings -g
    -I../include -I.  -I..
-I../sysdeps/standalone/arm -I../sysdeps/standalone
-I../sysdeps/arm/fpu -I../sysdeps/arm
-I../sysdeps/wordsize-32 -I../sysdeps/ieee754
-I../sysdeps/libm-ieee754 -I../sysdeps/generic
-include ../include/libc-symbols.h     -o tempname.o
../sysdeps/generic/tempname.c: In function
`__path_search':
../sysdeps/generic/tempname.c:33: number of arguments
doesn't match prototype
../include/stdio.h:37: prototype declaration
make[1]: *** [tempname.o] Error 1
make[1]: Leaving directory
`/home/vijay/glibc-2.1.2/stdio-common'
make: *** [stdio-common/subdir_lib] Error 2


Can somebody help me.

Regards
Felix
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From owner-linux-arm-outgoing@vger.rutgers.edu  Thu Feb  3 17:16:04 2000
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Date:   Thu, 3 Feb 2000 11:57:05 -0500 
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Hello Steve;

First get gdb-4.18, it supports the ARM architecture.  It contains a file
called remote-rdi.c that can be incorporated into your system for remote
kernel debugging.  If you have further questions you will need the experts
from the gdb mailing lists.

--George

George France,      france@crl.dec.com
Cambridge Research Laboratory, Compaq Computer Corporation
One Kendall Square, Building 700     MS: CRL
Cambridge, MA 02139 USA



-----Original Message-----
From: Steven J. Hill [mailto:sjhill@plutonium.net]
Sent: Wednesday, February 02, 2000 10:03 PM
To: linux-arm@vger.rutgers.edu
Subject: GDB and ANGEL.


Greetings.

I have searched through the archives and found only one mention of using
GDB and ANGEL for kernel debugging. It appears that it is not possible to
utilize GDB and ANGEL for this purpose. The only other way mentioned was
to buy an ICE and use 'printk'. Surely there has to be a better method than
this? Does anyone have a better methodology? Thanks in advance.

-Steve

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From owner-linux-arm-outgoing@vger.rutgers.edu  Thu Feb  3 21:10:05 2000
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Subject: Re: ELF and ARM
To: hpa@transmeta.com
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In-Reply-To: <7tbb9e$51e$1@palladium.transmeta.com> from "H. Peter Anvin" at Oct 04, 1999 10:55:42 PM
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H. Peter Anvin writes:
> Sorry for ask something that's at least semi-off-topic, but I would
> like to ask what the situation is regarding ELF on ARM.

ELF is now the preferred binary format on ARM.

> I do remember a long time ago something about a discussion that
> there was no definition for ARM ELF; is that still the case, or
> are the current snags elsewhere?

There is a definition, which can be found somewhere on the netwinder.org
ftp and/or web sites.  Exactly where it is, I'm not sure.

> All I know is that binutils 2.9.1 doesn't seem to support ARM ELF --
> if there is work that needs to be done in this are, perhaps I could
> lend a hand, but I'd like to know the current status :)

I think binutils 2.9.1 needed patches to properly support ARM.  However,
if you're thinking about kernels, you should be using 2.9.5.  2.9.1 had
some problems with text in different sections.
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |        Russell King       linux@arm.linux.org.uk      --- ---
  | | | |  http://www.arm.linux.org.uk/~rmk/armlinux.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |

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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb  4 12:19:37 2000
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Subject: Cross-compiling XFree86 for ARM
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Hi,

I am facing problems in cross-compiling XFree86 for ARM Architecture. I followed the following steps:

1. Downloaded XFree86-3.3.3.1-36nw10.src.rpm and installed.
2. Extracted files from x333src-1.tgz (I want to build XServer only)
3. Applied the patch 3.3.3-3.3.3.1.diff
4. Applied the patch XFree86-3.3.3-sparc.patch
5. Applied the patch XFree86-3.3.3.1-arm.patch
6. Made changes in config files in xc/config/cf directory
to build XF86_Mono server only.
Now the problem is:

I am able to compile all necessary directories for X86_Mono Server except xc/program/Xserver/hw/xfree86/vga2/
In this directory, I am getting errors while handling .s files. I used cpp and arm-linux-as from arm tools to create *.i files and *.o files respectively from *.s files.
While using arm-linux-as, we get the error messages saying
that instructions in *.i files are not valid instuctions. I also varified that the instructions in *.i files are i386 instructions (which are created by cpp), not ARM instructions and thus the error.
We can see in XFree86-3.3.3.1-arm.patch that nothing is modified in any of the .s files by applying this patch.

Could any one help me to over come this error, please ???


Thanks in advance
Saju.
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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb  4 12:33:39 2000
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Subject: Re: Cross-compiling XFree86 for ARM 
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>In this directory, I am getting errors while handling .s files. I used cpp and
> arm-linux-as from arm tools to create *.i files and *.o files respectively fr
>om *.s files.

You can't use the .S files for ARM.  You need to use the generic C 
implementation.

p.




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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb  4 15:01:49 2000
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On Fri, 4 Feb 2000, Saju Thomas wrote:

> I am facing problems in cross-compiling XFree86 for ARM Architecture.
> I followed the following steps:
> 
> 1. Downloaded XFree86-3.3.3.1-36nw10.src.rpm and installed.

Just a note:  This version of XFree86 is very much NetWinder specific. The
only X server which we (Rebel.com) use reliably is XF86_SVGA.  I'm not
certain about the other ones (XF68_FBDev is broken, I believe).  You might
get further using the Debian version, I believe someone is "actively"
working on it.

> 2. Extracted files from x333src-1.tgz (I want to build XServer only)
> 3. Applied the patch 3.3.3-3.3.3.1.diff
> 4. Applied the patch XFree86-3.3.3-sparc.patch
> 5. Applied the patch XFree86-3.3.3.1-arm.patch
> 6. Made changes in config files in xc/config/cf directory
> to build XF86_Mono server only.

As well I think you need to apply most/some of the other patches, as they
are needed to fix/address some issues.

Good luck,

-Rms


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From owner-linux-arm@lists.arm.linux.org.uk  Sat Feb  5 22:12:46 2000
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Date: Sat, 5 Feb 2000 17:12:40 -0500 (EST)
From: John G Dorsey <jd5q@andrew.cmu.edu>
To: linux-arm@lists.arm.linux.org.uk
Subject: PCMCIA Card Services 3.1.10 (StrongARM patch release 3)
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Hello,

I'd like to invite interested developers to begin tinkering with a patch
against PCMCIA Card Services for Linux which enables support for the
SA-1100:

  http://www.cs.cmu.edu/~wearable/software/pcmcia-arm.html

The new code was developed and tested against the WRL Itsy (running
2.0.30), so help from owners of other boards (running newer kernels) would
be especially welcome. In particular, feedback on the suitability of the
socket driver configuration interface (which currently attempts to tackle
nearly thirty PCMCIA implementation features which can differ across
StrongARM-based designs) will be greatly appreciated.

Thanks!
-jd


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From owner-linux-arm-outgoing@vger.rutgers.edu  Sun Feb  6 02:07:22 2000
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	Can gcc use the C procedure call varient with stack bounds
checking? Or otherwise stated, how can I check for stack overrun with C
code with ARM gcc.

	Cheers Adam


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Subject: Re: Tool chain question 
In-Reply-To: Message from Adam 'WeirdArms' Wiggins <awiggins@cse.unsw.EDU.AU> 
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From: Philip Blundell <Philip.Blundell@pobox.com>
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>	Can gcc use the C procedure call varient with stack bounds
>checking? Or otherwise stated, how can I check for stack overrun with C
>code with ARM gcc.

There is an -mapcs-stack-check option but it isn't implemented at the 
moment.  The Acorn RISC OS port might have code to support this; I don't know 
of anybody else offhand who would be likely to use it.  As a last resort, I 
don't think the code would be very hard to add.

GCC does support a generic -fstack-check option but it may not do what you 
want.

p.



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To: linux-arm@vger.rutgers.edu
From: steve@starswan.demon.co.uk (Steve Dicks)
Subject: Re: Can't complete build of ELF Glibc 2.1.2 
Reply-To: steve@starswan.com
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On Mon, 24 Jan 2000 09:43:08 +0000, pb@labs.futuretv.com said:

> In message <20000123.220634.15@starswan.demon.co.uk>, Steve Dicks writes:
> >I'm trying to produce an ELF version of glibc 2.1.2 (having sucessfully
> >built an ELF version of GCC) however I'm running out of memory during
> >some links. I think I need a static-linked version of ld for a.out systems
> >- is there one somewhere that I can grab, or do I have a different problem?
>
> I think Chris Rutter had a binary at one point.  You might find it easier to 
> install the Debian development packages which would give you native ELF tools,
> rather than trying to bootstrap them yourself.
>
Sorry to appear thick, but how do I do that? I can't find a copy of dpkg (which
I presume I need to install in .deb files) and I can't find how to upgrade my copy
of RPM either. I seem to need elf support for all the latest binaries, and most
of the available RPMs and SRPMs are in the later (RPM 2.5) format. Is there something
completely obvious that I'm missing here?



-- 
Steve Dicks - Starswan Systems Ltd
Hertfordshire's premier one-man Systems Consultancy

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From owner-linux-arm-outgoing@vger.rutgers.edu  Sun Feb  6 23:56:10 2000
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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
To: linux-arm@vger.rutgers.edu
Subject: Which ld.so to use?
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Hi,

I'm currently building (with a cross compiler) a new glibc-2.1.2 based
ramdisk image for SA1100 based systems. So far, the ramdisk uses the
following components:

- libc and libm from glibc-2.1.2 with debug symbols stripped
- busybox for almost all tools
- tinylogin for getty & login
- bash (which is strangely enough not really prepared for cross compilation)

I could have used ash as a shell, but IMHO bash is a bit more easy to use.
My goal is to make a useable ramdisk, not the smallest one. YMMV.

Now I need ld.so, the dynamic linker. I've tried compiling
ld.so-1.9.9.tar.gz (from metalab), but that only seems to support i386,
m68k, and sparc. I can't find a patch for it on the ArmLinux ftp site.
However, I found out that glibc contains ld-2.1.2.so. Is this indeed the
dynamic linker, or is there somewhere a patch for ld.so-1.9.9 available?

BTW: do I need other libraries except libc and libm?


Erik
[hmm, time to go to bed]

-- 
LART. 250 MIPS under one Watt.
http://www-ict.its.tudelft.nl/~erik/open-source/LART/




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Subject: Re: Can't complete build of ELF Glibc 2.1.2
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On Sun, Feb 06, 2000 at 10:09:53PM +0000, Steve Dicks wrote:
> Sorry to appear thick, but how do I do that? I can't find a copy of
> dpkg (which I presume I need to install in .deb files) and I can't find
> how to upgrade my copy of RPM either. I seem to need elf support for
> all the latest binaries, and most of the available RPMs and SRPMs are
> in the later (RPM 2.5) format. Is there something completely obvious
> that I'm missing here?

you can find dpkg on ftp.debian.org.  source is in
/debian/dists/potato/main/source/base/dpkg_1.6.7.tar.gz
binary is in /debian/dists/sid/main/binary-arm/base/dpkg_1.6.4.deb

you can unpack .deb archives with standard unix tools in fact.  they're
ar archives containing tars.

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Subject: Re: Which ld.so to use? 
In-Reply-To: Message from Erik Mouw <J.A.K.Mouw@its.tudelft.nl> 
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>However, I found out that glibc contains ld-2.1.2.so. Is this indeed the
>dynamic linker,

Yes.

>or is there somewhere a patch for ld.so-1.9.9 available?

No.  That is the old libc5 dynamic linker; it's no use on ARM.

>BTW: do I need other libraries except libc and libm?

That rather depends what programs you want to run.  `ldd' will tell you which 
libraries are required for a particular binary.

p.



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To: pb@labs.futuretv.com
Cc: linux-arm@vger.rutgers.edu
Subject: Re: Which ld.so to use?
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On Mon, 07 Feb 2000 09:20:52 +0000, Philip Blundell wrote:
>>However, I found out that glibc contains ld-2.1.2.so. Is this indeed the
>>dynamic linker,
> 
> Yes.
> 
>>or is there somewhere a patch for ld.so-1.9.9 available?
> 
> No.  That is the old libc5 dynamic linker; it's no use on ARM.

Ah, OK, thanks. I'm building something libc6 based so I don't need it.

>>BTW: do I need other libraries except libc and libm?
> 
> That rather depends what programs you want to run.  `ldd' will tell you which 
> libraries are required for a particular binary.

Where can I find ldd? I know it is a sneaky trick with the exec() system
call, and the ldd.so-1.9.9 has an assembly file to do it (which needs to
be ported to ARM), but I can't find a ldd binary in my cross compiled
glibc-2.1.2 setup (which makes sense because exec()-ing an ARM binary on
i386 doesn't work).


Erik

-- 
LART. 250 MIPS under one Watt.
http://www-ict.its.tudelft.nl/~erik/open-source/LART/




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To: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
Cc: linux-arm@vger.rutgers.edu
Subject: Re: Which ld.so to use? 
In-Reply-To: Message from Erik Mouw <J.A.K.Mouw@its.tudelft.nl> 
   of "Mon, 07 Feb 2000 12:08:35 +0100." <200002071108.MAA28939@duteinh.et.tudelft.nl> 
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>> That rather depends what programs you want to run.  `ldd' will tell you 
>> which libraries are required for a particular binary.
>
>Where can I find ldd?

It also comes with glibc.

>I know it is a sneaky trick with the exec() system call,

Not any more.  Actually, you can use this shell script as a poor man's ldd:

#!/bin/sh
/lib/ld-linux.so.2 --list $1

The one that comes with glibc is somewhat more sophisticated but the net 
effect is much the same.

p.



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From: Philip Hall <phil@blazie.com>
Date:   Thu, 10 Feb 2000 14:33:45 -0500
To: linux-arm@vger.rutgers.edu
Subject: makeing native toolchain on netwinder
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I tried to make a cross compiler on my intel box for a
strongarm cross tools chain.
I finally gave up on that idea.
Now i am trying to install binutils-2.9.5.0.22, gcc-2.95.2
on a running netwinder.
The system already has an older version of these tools,
and I wish to install the new ones in /usr/local.
I configured binutils and installed it.
here is the info from the top of the Makefile
for binutils.

# This file was generated automatically by configure.  Do not edit.
VPATH = .
links =
host_alias = armv4l-unknown-linux-gnu
host_cpu = armv4l
host_vendor = unknown
host_os = linux-gnu
host_canonical = armv4l-unknown-linux-gnu
target_alias = armv4l-unknown-linux-gnu
target_cpu = armv4l
target_vendor = unknown
target_os = linux-gnu
target_canonical = armv4l-unknown-linux-gnu
build_alias = armv4l-unknown-linux-gnu
build_cpu = armv4l
build_vendor = unknown
build_os = linux-gnu
build_canonical = armv4l-unknown-linux-gnu

here is the output of ld -V
ld -V
GNU ld version 2.9.5 (with BFD 2.9.5.0.22)
  Supported emulations:
   armelf_linux
   armelf_linux26
   armelf

here is the error when I try to configure gcc-2.95.2

Configuring for a armv4l-unknown-linux-gnu host.
Created "Makefile" in /home/phil/work/gcc-2.95.2 using "mt-frag"
/usr/local/bin/ld: unrecognised emulation mode: elf32arm
Supported emulations: armelf_linux armelf_linux26 armelf
collect2: ld returned 1 exit status
*** The command 'gcc -o conftest -g -O2   conftest.c' failed.
*** You must set the environment variable CC to a working compiler.


What did i do wrong?
thanks

phil

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Subject: How to config gdb-4.18 to debug ARM code ?
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Hello all ,

I got gdb-4.18 ,but I don't how to configure and make gdb-4.18 and then =
I could debug my ARM code.
My host is i586 ,
My target is arm.

Regards,
Kevin.


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and make=20
gdb-4.18 and then I could debug my ARM code.</FONT></DIV>
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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 11 14:59:09 2000
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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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Cc: linux-arm@vger.rutgers.edu
Subject: Re: makeing native toolchain on netwinder
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On Thu, 10 Feb 2000 14:33:45 -0500, Philip Hall wrote:
> I tried to make a cross compiler on my intel box for a
> strongarm cross tools chain.
> I finally gave up on that idea.

Too bad, it really isn't that difficult.

> Now i am trying to install binutils-2.9.5.0.22, gcc-2.95.2
> on a running netwinder.
> The system already has an older version of these tools,
> and I wish to install the new ones in /usr/local.
> I configured binutils and installed it.
> here is the info from the top of the Makefile
> for binutils.
> 
> # This file was generated automatically by configure.  Do not edit.
> VPATH = .
> links =
> host_alias = armv4l-unknown-linux-gnu
> host_cpu = armv4l
> host_vendor = unknown
> host_os = linux-gnu
> host_canonical = armv4l-unknown-linux-gnu
> target_alias = armv4l-unknown-linux-gnu
> target_cpu = armv4l
> target_vendor = unknown
> target_os = linux-gnu
> target_canonical = armv4l-unknown-linux-gnu
> build_alias = armv4l-unknown-linux-gnu
> build_cpu = armv4l
> build_vendor = unknown
> build_os = linux-gnu
> build_canonical = armv4l-unknown-linux-gnu
> 
> here is the output of ld -V
> ld -V
> GNU ld version 2.9.5 (with BFD 2.9.5.0.22)
>   Supported emulations:
>    armelf_linux
>    armelf_linux26
>    armelf
> 
> here is the error when I try to configure gcc-2.95.2
> 
> Configuring for a armv4l-unknown-linux-gnu host.
> Created "Makefile" in /home/phil/work/gcc-2.95.2 using "mt-frag"
> /usr/local/bin/ld: unrecognised emulation mode: elf32arm
> Supported emulations: armelf_linux armelf_linux26 armelf
> collect2: ld returned 1 exit status
> *** The command 'gcc -o conftest -g -O2   conftest.c' failed.
> *** You must set the environment variable CC to a working compiler.

/usr/local/bin is first in your path, so /usr/local/bin/ld comes before
/usr/bin/ld. The ARM target is renamed for the newer binutils. Your
current compiler (gcc-2.8.1) doesn't know about it and uses the newer ld
as if it were the old one.

This should do the trick (I haven't tried it on Netwinder, but it works on
Sun SunOS 4.1.4 and SGI IRIX 5.3):

- remove the new binutils from /usr/local/bin
- configure the binutils with the extra option --program-prefix=g
- build and install binutils (make ; make install)
- configure gcc with the extra options --with-gnu-ld=/usr/local/bin/gld
    --with-gnu-as=/usr/local/bin/gas
- build and install gcc (make bootstrap ; make install)

You can also consider giving a --program-prefix to gcc so you are able to
choose between the old and the new compiler (gcc vs. ggcc).


Erik

-- 
Computers run on faith, not electrons. -- T.N. Thompson




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From: Philip Hall <phil@blazie.com>
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To: linux-arm@vger.rutgers.edu
Subject: patching gcc
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I am attempting to install gcc-2.95.2 on a netwinder.
I tried to patch it with
gcc-2.95.2-diff-991022
and several things happen.
1. all of the patches for ChangeLog fail.
all the patches for configure fail.

and patch doesn't seem to be able to find the files that need patching
so I must type int he names by hand when prompted.
What should be patch command be?
i use patch <../gcc-2.95.2-diff-991022 while in
the top level of gcc-2.95.2

what should I do about the failing hunks for configure?
Someone suggested i run autoconfig to rebuild configure, but
this only resulted in a zero length configure.

Thanks for any and all help.

phil


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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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Cc: linux-arm@vger.rutgers.edu
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On Fri, 11 Feb 2000 11:00:57 -0500, Philip Hall wrote:
> I am attempting to install gcc-2.95.2 on a netwinder.
> I tried to patch it with
> gcc-2.95.2-diff-991022
> and several things happen.

Take Phil's newer gcc-2.95.3 patch, according to Phil it applies cleanly
against gcc-2.95.2.

> 1. all of the patches for ChangeLog fail.

Not important.

> all the patches for configure fail.

Hmm, strange. You do have patch 2.5? (use "patch -v" to find out)

> and patch doesn't seem to be able to find the files that need patching
> so I must type int he names by hand when prompted.

The files for gcc/cp/parse.[ch] are only in the full source. They are for
the C++ front-end. If you just have gcc-core, it's OK that they fail.

> What should be patch command be?
> i use patch <../gcc-2.95.2-diff-991022 while in
> the top level of gcc-2.95.2

It should be:

  tar zxvf gcc-2.95.2-core.tar.gz
  cd gcc-2.95.2
  patch -p0 < ../gcc-2.95.2-diff-991022

> what should I do about the failing hunks for configure?

They shouldn't fail. 

> Someone suggested i run autoconfig to rebuild configure, but
> this only resulted in a zero length configure.

It's autoconf, not autoconfig. You need a reasonably new autoconf version
(2.13 is the latest, AFAIK).

> Thanks for any and all help.

I'll check if I can get gcc-2.95.2 compiled on my Netwinder.


Erik

-- 
He had an odd feeling of being like a man in the act of adultery who
is surprised when the woman's husband wanders into the room, changes
his trousers, passes a few idle remarks about the weather and leaves
again. -- Douglas Adams, The Hitch Hikers Guide to the Galaxy





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From: George France <france@crl.dec.com>
To: "'???'" <cschiu@avision.com.tw>, linux-arm <linux-arm@vger.rutgers.edu>
Subject: RE: How to config gdb-4.18 to debug ARM code ?
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Hello Kevin;
 
Ptrace was not implemented in the ARM kernel.  So you probably need to patch
your kernel.  You will have to write your own ptrace code or I will send you
my Strong-ARM ptrace patch for linux 2.2.14 and you can make any
modifications you need from that point.  After you patch your kernel then.
 
1) You could run gdbserver on your ARM system.
 
2) You could write a gdb stub program for the ARM processor.
 
3)  Some ARM architecures can use the gdb programs remote-rdi.c or
remote-dp.c. It just depends on your system.
 
 
Good Luck in your efforts,
 
 
 
--George
George France,      france@crl.dec.com 
Cambridge Research Laboratory, Compaq Computer Corporation 
One Kendall Square, Building 700     MS: CRL 
Cambridge, MA 02139 USA 

-----Original Message-----[George France] ;l 
From: cschiu@avision.com.tw [mailto:cschiu@avision.com.tw]
Sent: Thursday, February 10, 2000 8:28 PM
To: linux-arm
Subject: How to config gdb-4.18 to debug ARM code ?


Hello all ,
 
I got gdb-4.18 ,but I don't how to configure and make gdb-4.18 and then I
could debug my ARM code.
My host is i586 ,
My target is arm.
 
Regards,
Kevin.
 


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<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=953152715-11022000>Hello 
Kevin;</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=953152715-11022000>Ptrace 
was not implemented in the ARM kernel.&nbsp; So you probably need to patch your 
kernel.&nbsp; You will have to write your own ptrace code or I will send you 
my&nbsp;Strong-ARM ptrace patch for linux 2.2.14 and you can make any 
modifications you need from that point.&nbsp; After you patch your kernel 
then.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=953152715-11022000>1) You 
could run gdbserver on your ARM system.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=953152715-11022000>2) You 
could write a gdb stub program for the ARM processor.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000>3)&nbsp; Some ARM architecures can use the gdb programs 
remote-rdi.c or remote-dp.c. It just depends on your system.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT><FONT color=#0000ff face=Arial 
size=2><SPAN class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=953152715-11022000>Good 
Luck in your efforts,</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN 
class=953152715-11022000>--George</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=953152715-11022000>
<P><FONT face=Tahoma size=1>George France,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
france@crl.dec.com</FONT> <BR><FONT face=Tahoma size=1>Cambridge Research 
Laboratory, Compaq Computer Corporation</FONT> <BR><FONT face=Tahoma size=1>One 
Kendall Square, Building 700&nbsp;&nbsp;&nbsp;&nbsp; MS: CRL</FONT> <BR><FONT 
face=Tahoma size=1>Cambridge, MA 02139 USA</FONT> </P></SPAN></FONT></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
  <DIV align=left class=OutlookMessageHeader dir=ltr><FONT face=Tahoma><FONT 
  size=2>-----Original Message-----<SPAN class=953152715-11022000><FONT 
  color=#0000ff face=Arial>[George 
  France]&nbsp;;l&nbsp;</FONT></SPAN><BR><B>From:</B> cschiu@avision.com.tw 
  [mailto:cschiu@avision.com.tw]<BR><B>Sent:</B> Thursday, February 10, 2000 
  8:28 PM<BR><B>To:</B> linux-arm<BR><B>Subject:</B> How to config gdb-4.18 to 
  debug ARM code ?<BR><BR></FONT></DIV></FONT>
  <DIV><FONT size=2>Hello all ,</FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><FONT size=2>I got gdb-4.18 ,but I don't how to&nbsp;configure and make 
  gdb-4.18 and then I could debug my ARM code.</FONT></DIV>
  <DIV><FONT size=2>My host is i586 ,</FONT></DIV>
  <DIV><FONT size=2>My target is arm.</FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><FONT size=2>Regards,</FONT></DIV>
  <DIV><FONT size=2>Kevin.</FONT></DIV>
  <DIV>&nbsp;</DIV></BLOCKQUOTE></BODY></HTML>

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Date:   Fri, 11 Feb 2000 11:12:29 -0500
From: "Steven J. Hill" <sjhill@plutonium.net>
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To: Philip Hall <phil@blazie.com>
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Subject: Re: patching gcc
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Philip Hall wrote:
> 
> I am attempting to install gcc-2.95.2 on a netwinder.
> I tried to patch it with
> gcc-2.95.2-diff-991022
> and several things happen.
> 1. all of the patches for ChangeLog fail.
> all the patches for configure fail.
> 
> and patch doesn't seem to be able to find the files that need patching
> so I must type int he names by hand when prompted.
> What should be patch command be?
> i use patch <../gcc-2.95.2-diff-991022 while in
> the top level of gcc-2.95.2
> 
> what should I do about the failing hunks for configure?
> Someone suggested i run autoconfig to rebuild configure, but
> this only resulted in a zero length configure.
> 
> Thanks for any and all help.
> 
I had the same problem, so I created a new patch that works identically
to Phil's original patch. Give this a try, it should work great.

-Steve
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To: =?big5?B?qvSn07K7?= <cschiu@avision.com.tw>
Cc: "linux-arm" <linux-arm@vger.rutgers.edu>
Subject: Re: How to config gdb-4.18 to debug ARM code ? 
In-Reply-To: Message from =?big5?B?qvSn07K7?= <cschiu@avision.com.tw> 
   of "Fri, 11 Feb 2000 09:27:59 +0800." <000e01bf742f$3b9ea1c0$4314010a@avision.com.tw> 
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Date:   Fri, 11 Feb 2000 19:36:41 +0000
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>I got gdb-4.18 ,but I don't how to configure and make gdb-4.18 and then =
>I could debug my ARM code.
>My host is i586 ,
>My target is arm.

Gdb 4.18 doesn't support ARM GNU/Linux.  You have to either use a development 
version or wait for the next release of gdb.

p.



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>What should be patch command be?
>i use patch <../gcc-2.95.2-diff-991022 while in
>the top level of gcc-2.95.2

You probably need to use -p0.

>what should I do about the failing hunks for configure?
>Someone suggested i run autoconfig to rebuild configure, but
>this only resulted in a zero length configure.

Only run autoconf in a directory where there was actually a failed patch to 
`configure' -- ie gcc-2.95.2/gcc, but not gcc-2.95.2 itself.  The comments at 
the top of the latter configure file should explain why.

p.



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Hey all.

Sorry to ask these questions (because I know they've been answered a 1000
times) but what versions of GCC/Binuitls/EGCS should I use if I want to
setup a cross-compiler on my x86 Linux machine?

I looked at Chris Rutter's guide, but he suggested to not use the 2.9.5
binutils. However, I thought I heard Nico mention using 2.9.52 was ok with
his 2.3.x patched kernel. Also, is Chris's website the most update/current
guide to follow? In the past I've used the Intel guide.

Also, when I setup the new tool chain, it shouldn't change the compiler
that my x86 system uses(for x86 code), should it?

If it matters, my target is a Brutus / StrongARM SA1100.

Thanks for the help,
Vasant.



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>From Kevin:
> I got gdb-4.18 ,but I don't how to configure and make gdb-4.18 and then I
> could debug my ARM code.  My host is i586, My target is arm.

>From Georgd France:      
 
> Ptrace was not implemented in the ARM kernel.  So you probably need to patch 
> your kernel.  You will have to write your own ptrace code or I will send you 
> my Strong-ARM ptrace patch for linux 2.2.14 and you can make any 
> modifications you need from that point.  After you patch your kernel then.
> 
> 1) You could run gdbserver on your ARM system.
> 2) You could write a gdb stub program for the ARM processor.
> 3) Some ARM architecures can use the gdb programs remote-rdi.c or 
>    remote-dp.c. It just depends on your system.

I don't understand what is going on here.  Ptrace is implemented in the ARM
kernel, at least as early as has been since 2.0.31.  It is certainly in the 2.2
kernels, cause I use it in GDB.  There have been bugs in the ptrace
implementation, but these have been identified and fixed.  It should work fine.

The GDB in CVS at sourceware.cygnus.com has support for ARM Linux, and a variety
of embedded platforms.  I've never configured for any of the embedded stuff
however.  The released 4.18 code has no support for ARM Linux however, you need
to get it from the CVS tree.

What kind of ARM target are you interested in?

Scott

-- 
Scott Bambrough - Software Engineer
REBEL.COM    http://www.rebel.com
NetWinder    http://www.netwinder.org

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Philip Hall wrote:
> 
> I am attempting to install gcc-2.95.2 on a netwinder.
> I tried to patch it with
> gcc-2.95.2-diff-991022

I have made available my .rpms for gcc-2.95.2 at 

ftp://ftp.netwinder.org/user/s/scottb/current

They require use of binutils 2.9.5, which can be found in the same place.

I've been using this compiler for ~8 weeks now, and Rod has rebuilt the entire
build 15 distribution with it.  It seems solid.  If you can wait until Monday I
intend to update them with a set of updated patches.  Mine are somewhat
different than Phils.  For the inquisitive, who look in the SRPM, I have three
patches, the third is mostly equivalent to Phil's.  I still need to add the
scheduling fix from Jeff Law (the very last patch in Phil's latest diff).

Scott

-- 
Scott Bambrough - Software Engineer
REBEL.COM    http://www.rebel.com
NetWinder    http://www.netwinder.org

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From owner-linux-arm-outgoing@vger.rutgers.edu  Sat Feb 12 13:05:47 2000
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To: Vasant Ramasubramanian <vasantr@utdallas.edu>
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Subject: Re: Cross-compiler: Oh no, not again! 
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>Sorry to ask these questions (because I know they've been answered a 1000
>times) but what versions of GCC/Binuitls/EGCS should I use if I want to
>setup a cross-compiler on my x86 Linux machine?

In future, please check the mailing list archives before you post.

>I looked at Chris Rutter's guide, but he suggested to not use the 2.9.5
>binutils. However, I thought I heard Nico mention using 2.9.52 was ok with
>his 2.3.x patched kernel. Also, is Chris's website the most update/current
>guide to follow? In the past I've used the Intel guide.

Use 2.9.5.x.  Chris' guide is slightly out of date.  The Intel page contains 
some mistakes too.

>Also, when I setup the new tool chain, it shouldn't change the compiler
>that my x86 system uses(for x86 code), should it?

No.

p.



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From owner-linux-arm-outgoing@vger.rutgers.edu  Mon Feb 14 03:20:16 2000
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Subject: ANNOUNCE: Precompiled cross compiler
To: sa1100-linux@pa.dec.com, linux-arm@vger.rutgers.edu
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From: J.A.K.Mouw@its.tudelft.nl (Erik Mouw)
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Hi all,

Because a lot of people have problems building their own i386 --> arm
cross-compiler I tarred up my own compiler and put it on a web page.
You can get it at:

  http://www-ict.its.tudelft.nl/~erik/open-source/arm-linux-cross/

The package contains gcc and g++ 2.95.2, glibc 2.1.2 with glibc-crypt
and glibc-linux-threads, and binutils 2.9.5.0.22.

The compiler was build on a i386 Debian GNU/Linux 2.1 system, which uses
glibc-2.0.7. It works for me, YMMV. 

Please read the README file before you download the tarball.


Erik

-- 
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2785859  Fax: +31-15-2781843  Email J.A.K.Mouw@its.tudelft.nl
WWW: http://www-ict.its.tudelft.nl/~erik/

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From owner-linux-arm-outgoing@vger.rutgers.edu  Mon Feb 14 18:51:59 2000
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Date:   Mon, 14 Feb 2000 18:16:32 +0000 (GMT)
From: Wookey <wookey@aleph1.co.uk>
Subject: RISCOS/ARMlinux dual boot
To: armlinux list <linux-arm@vger.rutgers.edu>
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Is there a recommended way to set up a machine for dual boot?

First I tried putting !Linux in Predesk but I just get a complaint that
it can't get the 2Mb it needs, so I gave up on that and replaced !Boot
with !linux instead so that you get a 1:RISCOS, 2: Linux choice straight
away. This boots ARMLinux fine but if you choose RISCOS it just drops you
to the supervisor prompt - fair enough, but is there a way of getting it
to execute an obey file on exit so that you can on to do a normal desktop
boot? Perhaps a different set-up would achieve a similar effect?

I'd just like to be able to choose which OS to start on boot, but
otherwise have them start up as normal.

On a related note, if you normally start to RISCOS, and run !linux to
boot Linux, is there a mechanism to get shutdown to leave some kind of
pointer around so that it would either restart to RISCOS or restart to
ARMlinux according to parameters given? I can see that this could be
difficult, but it would be nice.

Wookey
-- 
Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK  Tel (00 44) 1223 811679
work: http://www.aleph1.co.uk/     play: http://www.chaos.org.uk/~wookey/


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From owner-linux-arm-outgoing@vger.rutgers.edu  Tue Feb 15 00:07:59 2000
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From: Peter Naulls <peter@erble.freeserve.co.uk>
To: linux-arm@vger.rutgers.edu
Subject: Re: RISCOS/ARMlinux dual boot
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In message <Marcel-1.50-0214181632-63dh+Ty@chewy.aleph1.co.uk>
          Wookey <wookey@aleph1.co.uk> wrote:

> First I tried putting !Linux in Predesk but I just get a complaint that
> it can't get the 2Mb it needs, so I gave up on that and replaced !Boot
> with !linux instead so that you get a 1:RISCOS, 2: Linux choice straight

> On a related note, if you normally start to RISCOS, and run !linux to
> boot Linux, is there a mechanism to get shutdown to leave some kind of
> pointer around so that it would either restart to RISCOS or restart to
> ARMlinux according to parameters given? I can see that this could be
> difficult, but it would be nice.

In both cases, you could do what NetBSD does.  That is:

(a) catch a key press in Preboot (Basic program, with INKEY), and then
set a system variable to cause boot sequence to be largely skipped over.
In desktop, if it's set, run !Linux.

(b) BSD sets a value in CMOS - it uses this to alter the
default behaviour of (a).

I suggests taking a look at the BSD bootloader.

Peter

-- 
+---------------------------------------------+-----------------------------+
| Peter Naulls - pnaulls@usa.net              |                             |
| http://free.prohosting.com/~chocky/         | Java and JVM Consultant     |
| Java for RISC OS and ARM - java-arm@usa.net | Technical Author            |
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Subject: Re: RISCOS/ARMlinux dual boot
To: wookey@aleph1.co.uk (Wookey)
Date:   Mon, 14 Feb 2000 22:12:38 +0000 (GMT)
Cc: linux-arm@vger.rutgers.edu (armlinux list)
In-Reply-To: <Marcel-1.50-0214181632-63dh+Ty@chewy.aleph1.co.uk> from "Wookey" at Feb 14, 2000 06:16:32 PM
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Wookey writes:
> Is there a recommended way to set up a machine for dual boot?

Yes, please read the !Help file within !Linux - IIRC it gives information
on exactly how to do this.

> On a related note, if you normally start to RISCOS, and run !linux to
> boot Linux, is there a mechanism to get shutdown to leave some kind of
> pointer around so that it would either restart to RISCOS or restart to
> ARMlinux according to parameters given? I can see that this could be
> difficult, but it would be nice.

Yes, it's a WIBNI, but not currently possible.  I've thought about allowing
it to write back to the partition some sort of identifier (into the
/boot/boot.map file) to indicate which OS was last selected - there's some
space in the header for this iirc.  However, if you re-run loadmap under
Linux, it will reset it back to the default.  Maybe this is a good thing?

A better choice may be a CMOS RAM location, but that means we have to "pinch"
it.

Ideas?
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |        Russell King       linux@arm.linux.org.uk      --- ---
  | | | |  http://www.arm.linux.org.uk/~rmk/armlinux.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |

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Subject: How to convert arm sdt .s to arm-linux-gcc .s
Date:   Tue, 15 Feb 2000 17:42:03 +0800
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I have some arm sdt .s file ,Who have program to convert it to the arm-linux-gcc format ?
�{.n�+���n�r���˛���m�b���j�������ݢj�����������n���y��ǥ�{�����G�����+-�����b�������G���G������Z��]��.�Ȩ���

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Subject: Re: How to convert arm sdt .s to arm-linux-gcc .s
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On Tue, 15 Feb 2000 17:42:03 +0800, changzhijie wrote:
> I have some arm sdt .s file ,Who have program to convert it to the
> arm-linux-gcc format ?

Just plain gcc is sufficient to compile assembly files:

  arm-linux-gcc -Wall -c file.s -o file.o


Erik

-- 
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2785859  Fax: +31-15-2781843  Email J.A.K.Mouw@its.tudelft.nl
WWW: http://www-ict.its.tudelft.nl/~erik/




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Subject: Re: How to convert arm sdt .s to arm-linux-gcc .s 
In-Reply-To: Message from "changzhijie" <elecboy@371.net> 
   of "Tue, 15 Feb 2000 17:42:03 +0800." <HLEILAKEENOJHLAJDNMBGECNCAAA.elecboy@371.net> 
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In message <HLEILAKEENOJHLAJDNMBGECNCAAA.elecboy@371.net>, "changzhijie" writes
:
>SSBoYXZlIHNvbWUgYXJtIHNkdCAucyBmaWxlICxXaG8gaGF2ZSBwcm9ncmFtIHRvIGNvbnZlcnQg
>aXQgdG8gdGhlIGFybS1saW51eC1nY2MgZm9ybWF0ID8NCg==

I don't know of any program to do this offhand, though I have a vague feeling 
it may have been discussed in comp.sys.arm at some point.  Try Dejanews.

If you're lucky, the changes required will be minimal -- just comment formats 
and a few directives.  You could probably write a perl script to do the 
changes easily enough.

p.



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> > I have some arm sdt .s file ,Who have program to convert it to the
> > arm-linux-gcc format ?
> 
> Just plain gcc is sufficient to compile assembly files:
> 
>   arm-linux-gcc -Wall -c file.s -o file.o

	The arm SDT asm code I've seen does use different assembler
directives; they will have to be converted.  If the file isn't too big,
it's easy to do by hand.

Chris


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From owner-linux-arm-outgoing@vger.rutgers.edu  Tue Feb 15 19:46:06 2000
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From: Wookey <wookey@aleph1.co.uk>
Subject: VRAM requirement for RiscPCs
To: armlinux list <linux-arm@vger.rutgers.edu>
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Have more recent kernels than 2.0.36 removed the need for RiscPCs to have
VRAM?

If not, can someone explain to me why this is currently the case and what
needs doing to support no-VRAM machines? Or tell me which bit of docs I
have failed to read :-)

thanx

Wookey
-- 
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work: http://www.aleph1.co.uk/     play: http://www.chaos.org.uk/~wookey/


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From owner-linux-arm-outgoing@vger.rutgers.edu  Tue Feb 15 20:49:41 2000
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Subject: Re: VRAM requirement for RiscPCs
To: wookey@aleph1.co.uk (Wookey)
Date:   Tue, 15 Feb 2000 20:20:41 +0000 (GMT)
Cc: linux-arm@vger.rutgers.edu (armlinux list)
In-Reply-To: <Marcel-1.50-0215183956-1cbh+Ty@chewy.aleph1.co.uk> from "Wookey" at Feb 15, 2000 06:39:56 PM
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Wookey writes:
> Have more recent kernels than 2.0.36 removed the need for RiscPCs to have
> VRAM?

Yes.

> If not, can someone explain to me why this is currently the case and what
> needs doing to support no-VRAM machines? Or tell me which bit of docs I
> have failed to read :-)

The later kernels should work with VRAM.  I mayself have not tested it,
but I believe it works.
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |        Russell King       linux@arm.linux.org.uk      --- ---
  | | | |  http://www.arm.linux.org.uk/~rmk/armlinux.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |

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Subject: memory Page sizes
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Hello Russell;

While debugging a DMA issue.  I found that the kernel has a 1 Mb page size
and the user space has a 4 Kb page size.  Could you tell my why it was done
this way,  along with the details of how it was implemented ??  

It is giving me an interesting problem.  I have a device driver that resides
in the kernel. It uses a 128 byte buffer to receive a DMA transfer.  If I
set the memory page to be uncachable and unbuffered, this allows the CPU to
recongnize the DMA transfer, then I get a huge decrease in the performance
of the kernel, as it turns off the Dcache for a whole 1 Mb page.  Any
Ideas????

Best Regards,


--George


George France,      france@crl.dec.com
Cambridge Research Laboratory, Compaq Computer Corporation
One Kendall Square, Building 700     MS: CRL
Cambridge, MA 02139 USA



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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb 16 08:09:54 2000
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Date:   Wed, 16 Feb 2000 07:03:46 +0000 (GMT)
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George France writes:
> While debugging a DMA issue.  I found that the kernel has a 1 Mb page size
> and the user space has a 4 Kb page size.  Could you tell my why it was done
> this way,  along with the details of how it was implemented ??  

Its done to reduce the impact of page table lookups for the kernel.

> It is giving me an interesting problem.  I have a device driver that resides
> in the kernel. It uses a 128 byte buffer to receive a DMA transfer.  If I
> set the memory page to be uncachable and unbuffered, this allows the CPU to
> recongnize the DMA transfer, then I get a huge decrease in the performance
> of the kernel, as it turns off the Dcache for a whole 1 Mb page.  Any
> Ideas????

Yes, don't do this.  In 2.3 kernels, there is a method of getting a "page"
sized area and mapping it uncached without disturbing the kernels normal
mapping.
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |         Russell King        rmk@arm.linux.org.uk      --- ---
  | | | |   http://www.arm.linux.org.uk/~rmk/aboutme.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |


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Dear all

I want to find the SDT demo program (*.axf) and=20
try it on SA1100. But I can't find the file. Where=20
can I get that ??
Thanks

                                                                  green

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<DIV><FONT color=3D#000000><FONT size=3D3>Dear all</FONT></FONT><FONT=20
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<DIV><FONT color=3D#000000><FONT size=3D3></FONT></FONT><FONT=20
size=3D3></FONT>&nbsp;</DIV>
<DIV><FONT size=3D3>I want to find the SDT demo program (*.axf) and =
</FONT></DIV>
<DIV><FONT size=3D3>try it on SA1100. </FONT><FONT size=3D3>But I can't =
find the=20
file. Where </FONT></DIV>
<DIV><FONT size=3D3>can I get that ??</FONT></DIV>
<DIV><FONT color=3D#000000><FONT size=3D3>Thanks</FONT></FONT><FONT=20
size=3D3></FONT></DIV>
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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb 16 13:25:38 2000
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Subject: Problem exec-ing apps 
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Hi,
I am having problems 'exec'ing applications in an
anvil EP7211-based board. The user apps exit giving a 
memory violation at pc=0x0.

I am using a very minimal shell (that just forks and
execs). The only application that I am able to
successfully exec from this shell is another instance
of itself. All other apps give the memory violation.
The exec system call itself does not return failure.

The shell is exec-ed from init/main.c as usual.
I have verified that the apps that fail (from the
shell) successfully execute if they are exec-ed from
init/main.c


The exec system call code-path, i.e, 

   /bin/sh
-> execve()
-> sys_execve_wrapper (/arch/arm/entry-common.S) 
-> sys_execve   (arch/arm/sys_arm.c)
-> do_execve    (fs/exec.c)
-> do_load_elf_binary (fs/binfmt_elf.c) 

and all other subfunctions, return success  in both 
cases (the load and pagetable mappings
for the new process successfully completed?).

Application memory map for the successful invocation
of the shell:

(start_brk) 203ec84
(end_code) 2034f54
(start_code) 2000000
(end_data) 203dfc0
(start_stack) bfffff90
(brk) 203ec84

Map when exec fails:

(start_brk) 203eb34
(end_code) 2034e04
(start_code) 2000000
(end_data) 203de70
(start_stack) bfffffa0
(brk) 203eb34

Message from the application that the shell
attempted to exec: 
/bin/print: memory violation at pc=0x00000000, lr=0x0202eb4c
(bad address=0x00000000, code 3)

The board has 16M of memory. The filesystem is ext2fs
and it resides in the flash. 
I've 16M of flash from phys address 0x0.
The applications are statically linked elf
executables.

Could anyone please suggest something?

Thanks & Rgds,
Srikrishnan V
 

 -------------------------------------------------------------------------------
Get a free mail address from http://www.indiainfo.com


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On Wed, 16 Feb 2000 krishna@indiainfo.com wrote:

> I am having problems 'exec'ing applications in an
> anvil EP7211-based board. The user apps exit giving a 
> memory violation at pc=0x0.

Cool, so someone else finally has an Anvil board!  Except it has 16MB?
That doesn't sound like an Anvil...

I'm assuming you're using my patch on top of crash+burn-26?  In that case
you probably have the same problem that Pawel found.  I've attached his
message below, which describes a fix.  My stupid mistake.  One day I'll
post a new patch, I was hoping to have some other stuff done on it but
haven't had time lately.  Usual story.

Anyway, hope this helps.  All the best,

- Ben.

-------------------------------------------------------------------
Ben Williamson       benw@pobox.com     http://www.pobox.com/~benw/


---------- Forwarded message ----------
From: Pawel Gburzynski <pawel@cs.ualberta.ca>
To: Ben Williamson <benw@pobox.com>
Subject: Re: Linux on ARM720T (more updates)

Ben,

There is a bit more. Your nice little shell runs fine, but the
system will panic as soon as you try, e.g., to do execve. The
problem is that the TLB is not flushed properly because
arch/arm/mm/proc-arm6,7.S assembles with the wrong CPU version.

Do this:

In arch/arm/mm/proc-arm6,7.S, replace all occurrences of
CONFIG_ARCH_ARMV4 with CONFIG_CPU_ARMV4.

Add "#include <linux/autoconf.h>" in the header.

Regards,

--
Pawel




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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb 16 20:58:44 2000
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Date:   Wed, 16 Feb 2000 14:26:06 -0500
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Subject: still attempting to build gcc
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I am still attempting to build either a cross compiler or
a native on a netwinder of binutils-2.9.5.0.22 or 24
gcc-2.95.2 and glibc-2.1.2
Instead of taking up band with here, is there someone I can
contact directly for help?

thanks.

phil



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Philip Hall wrote:
> 
> I am still attempting to build either a cross compiler or
> a native on a netwinder of binutils-2.9.5.0.22 or 24
> gcc-2.95.2 and glibc-2.1.2
> Instead of taking up band with here, is there someone I can
> contact directly for help?
> 

There are RPM's of 2.95.2 for a NetWinder at:

ftp://ftp.netwinder.org/users/s/scottb/current

Scott

-- 
Scott Bambrough - Software Engineer
REBEL.COM    http://www.rebel.com
NetWinder    http://www.netwinder.org

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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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Cc: linux-arm@vger.rutgers.edu
Subject: Re: still attempting to build gcc
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On Wed, 16 Feb 2000 14:26:06 -0500, Philip Hall wrote:
> I am still attempting to build either a cross compiler or
> a native on a netwinder of binutils-2.9.5.0.22 or 24
> gcc-2.95.2 and glibc-2.1.2
> Instead of taking up band with here, is there someone I can
> contact directly for help?

I also tried it last weekend on our Netwinder (dm-12 disk image, IIRC) and
failed, mainly because of lack of time. A native compile (with "make
bootstrap") fails because we're not building a _native_ compiler at all.
We want to make a _cross_ compiler for arm-unknown-linux-gnuoldld to
arm-unknown-linux-gnu.

If you want to build a compiler on the Netwinder, sticky to Chris Rutters
notes and build a cross compiler. If you're completely fed up with
building cross compilers, download my precompiled i386 to arm cross
compiler at:

  http://www-ict.its.tudelft.nl/~erik/open-source/arm-linux-cross/


Erik

-- 
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On Thu, 17 Feb 2000 14:06:36 +0000, Philip Blundell wrote:
>>What we (== Phil Blazie and I) actually want to build is a glibc-2.1.2
>>based toolchain that doesn't interfere with the original installation.
> 
> Surely you can achieve that by just building with a suitable --prefix argument 
> (ie anything other than /usr or /usr/local).

I tried to install it in /data/lart/install and it failed. I didn't have
time enough to find out why, but it can't be more difficult than trying to
compile gcc-2.95.2 on ancient SUNs ;-).


Erik

-- 
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To: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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Subject: Re: still attempting to build gcc 
In-Reply-To: Message from Erik Mouw <J.A.K.Mouw@its.tudelft.nl> 
   of "Thu, 17 Feb 2000 11:56:47 +0100." <200002171056.LAA08990@duteinh.et.tudelft.nl> 
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>I also tried it last weekend on our Netwinder (dm-12 disk image, IIRC) and
>failed, mainly because of lack of time. A native compile (with "make
>bootstrap") fails because we're not building a _native_ compiler at all.
>We want to make a _cross_ compiler for arm-unknown-linux-gnuoldld to
>arm-unknown-linux-gnu.

That's a fairly nonsensical thing to do, actually.  All the -oldld suffix 
means is that you are targeting an old version of binutils.  It makes no 
difference at all as a host system.

If "configure; make bootstrap" fails then something is wrong with gcc itself
or your installed tools.  What's the error you get?

p.



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On Thu, 17 Feb 2000 13:21:37 +0000, Philip Blundell wrote:
>>I also tried it last weekend on our Netwinder (dm-12 disk image, IIRC) and
>>failed, mainly because of lack of time. A native compile (with "make
>>bootstrap") fails because we're not building a _native_ compiler at all.
>>We want to make a _cross_ compiler for arm-unknown-linux-gnuoldld to
>>arm-unknown-linux-gnu.
> 
> That's a fairly nonsensical thing to do, actually.  All the -oldld suffix 
> means is that you are targeting an old version of binutils.  It makes no 
> difference at all as a host system.

No, I'm not targeting an old version of binutils; that's where I start
from. Maybe I didn't make myself clear, so I'll try to explain it in more
detail.

My Netwinder has a dm12 disk image, so that is gcc-2.8.1 with
binutils-2.9.1 (IIRC). Config.guess reports that this particular setup is
known as arm4vl-unknown-linux-gnuoldld, which means that it still uses
elf32-arm as output format instead of the newer elf32-littlearm. To build
glibc-2.1.2, you need gcc-2.95.2 and binutils-2.9.5 (I used 2.9.5.0.22).

What we (== Phil Blazie and I) actually want to build is a glibc-2.1.2
based toolchain that doesn't interfere with the original installation.
I think that is *exactly* the definition of a cross compiler.

> If "configure; make bootstrap" fails then something is wrong with gcc itself
> or your installed tools.  What's the error you get?

Sorry, I can't check, I don't have access to the Netwinder from here.


Erik

-- 
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Subject: Re: still attempting to build gcc 
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>What we (== Phil Blazie and I) actually want to build is a glibc-2.1.2
>based toolchain that doesn't interfere with the original installation.

Surely you can achieve that by just building with a suitable --prefix argument 
(ie anything other than /usr or /usr/local).

p.



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To: "'linux-arm@vger.rutgers.edu'" <linux-arm@vger.rutgers.edu>
Subject: My first 'hello world' has a problem...
Date:   Thu, 17 Feb 2000 14:01:38 -0500
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Well, I *think* I've managed to get through the rather ponderous task of
installing binutils, gcc and newlib on an i686 platform targeted at
"arm-linux".  When compiling hello.c the linker is complaining about
something:

/pub/usr/arm-linux/bin/ld: unrecognised emulation mode: elf32arm
Supported emulations: armelf_linux, armelf_linux26, armelf
collect2: ld returned 1 exit status

I'm running binutils-2.9.5.0.27.  Is there a patch I've missed?
Also have gcc-2.95.2 (didn't find any patches that made sense), built with
kernel headers from 2.2.14 (patched with patch-2.2.14-rmk4), and
newlib-1.8.2 (no patches)

//Jeff

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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 18 02:26:00 2000
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Subject: Re: My first 'hello world' has a problem... 
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>/pub/usr/arm-linux/bin/ld: unrecognised emulation mode: elf32arm
>Supported emulations: armelf_linux, armelf_linux26, armelf
>collect2: ld returned 1 exit status
>
>I'm running binutils-2.9.5.0.27.  Is there a patch I've missed?

No, but you failed to read the binutils release note.

>Also have gcc-2.95.2 (didn't find any patches that made sense),

Try the "2.95.3" patch from ftp.netwinder.org:/users/p/philb.

p.



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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 18 16:16:44 2000
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Date:   Fri, 18 Feb 2000 09:28:34
From: krishna@indiainfo.com
Subject: Re: Re: Problem exec-ing apps
To: Ben Williamson <benw@pobox.com>, krishna@indiainfo.com
Cc: linux-arm@vger.rutgers.edu
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Ben, Thanks a ton.
I am able to execute a lot of stuff.
(like 'ls', 'du'...).
But a program like 

main() { while(1);}

gives a memory fault.
/bin/test: memory violation at pc=0x00000000, lr=0x02005bec (bad address=0x00000000, code 3)


But if the while loop is non-empty,
say,

main() { while(1) printf("test");}

there are no problems.

Any ideas?

Thanks,
Srikrishnan V

>Ben Williamson <benw@pobox.com>,krishna@indiainfo.com >wrote:
>
> On Wed, 16 Feb 2000 krishna@indiainfo.com wrote: 
>  
> > I am having problems 'exec'ing applications in an 
> > anvil EP7211-based board. The user apps exit giving a  
> > memory violation at pc=0x0. 
>  
> Cool, so someone else finally has an Anvil board!  Except it has 16MB? 
> That doesn't sound like an Anvil... 
>  
> I'm assuming you're using my patch on top of crash+burn-26?  In that case 
> you probably have the same problem that Pawel found.  I've attached his 
> message below, which describes a fix.  My stupid mistake.  One day I'll 
> post a new patch, I was hoping to have some other stuff done on it but 
> haven't had time lately.  Usual story. 
>  
> Anyway, hope this helps.  All the best, 
>  
> - Ben. 
>  
> ----------------------------------------------------------------- --  
> Ben Williamson       benw@pobox.com     http://www.pobox.com/~benw/ 
>  
>  
> ---------- Forwarded message -------- --  
> From: Pawel Gburzynski <pawel@cs.ualberta.ca> 
> To: Ben Williamson <benw@pobox.com> 
> Subject: Re: Linux on ARM720T (more updates) 
>  
> Ben, 
>  
> There is a bit more. Your nice little shell runs fine, but the 
> system will panic as soon as you try, e.g., to do execve. The 
> problem is that the TLB is not flushed properly because 
> arch/arm/mm/proc-arm6,7.S assembles with the wrong CPU version. 
>  
> Do this: 
>  
> In arch/arm/mm/proc-arm6,7.S, replace all occurrences of 
> CONFIG_ARCH_ARMV4 with CONFIG_CPU_ARMV4. 
>  
> Add "#include <linux/autoconf.h>" in the header. 
>  
> Regards, 
>  
>  --  
> Pawel 
>  

 -------------------------------------------------------------------------------
Get a free mail address from http://www.indiainfo.com


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From owner-linux-arm@lists.arm.linux.org.uk  Sun Feb 20 23:15:15 2000
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Hi,

I am pleased to report that the mailing lists have now been moved onto a
new server and are now running correctly.

The old lists have been disabled, which means that the archives held on
'ftp.arm.linux.org.uk' will be out of date until the FTP site is properly
transferred.

Unfortunately, some of the archived messages were lost in this move,
which I hope will not cause too many problems for anyone.

I shall look into transferring the FTP site shortly.  Please ensure that
you are using the correct address, namely:

	"ftp.arm.linux.org.uk"

	or

	"ftp.arm.uk.linux.org"

The first address is preferable.  This is especially true for sites mirroring
the main FTP site.
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |        Russell King       linux@arm.linux.org.uk      --- ---
  | | | |  http://www.arm.linux.org.uk/~rmk/armlinux.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |

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From owner-linux-arm-outgoing@vger.rutgers.edu  Mon Feb 21 14:42:43 2000
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From: Wookey <wookey@aleph1.co.uk>
Subject: Re: Installation
To: armlinux list <linux-arm@vger.rutgers.edu>
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On Sun 20 Feb, Matthew King wrote:
> The first problem I have is getting the files onto the acorn (RPC600,
> 540MB, 5MB). Sticking the HD in my i386 box doesn't work, 

no, a filecore-formatted drive won't be recognised in a PC. It would be
possible to get it recognised by compiling up a suitable kernel with adfs
module but I don't know offhand what bits/version/patches of kernel
source you would need to do that, nor at which version write support was
added (which you would need to transfer files to the ADFS HD). When you
say 'the files' you don't really make it clear what files you currently
have, nor where they are currently residing? Do you have the Clan CD
release, or have you downloaded some stuff onto the PC? 

> and I don't have
> any CD drivers for RISCOS. Would it be at all possible for someone to send
> me these? 

Do you mean you don't have a CD in the RISCOS box, and if you plug one in
it's not recognised? How to get it recognised depends on which version of
RISCOS you have. For ROS 3.7 or later most ATAPI drives should 'just
work' if you configure them in !Boot and ensure the CDFSsoftATAPI module
is not unplugged. For earlier versions of RISCOS you would need to
buy/get a suitable driver (e.g GBP 15+VAT from CTA direct according to
the Acorn User I have handy). 

Another appoach would be to network the machine and install the files
from the PC over an NFS mount. (If you haven't aleady got a network
card(s) though this will cost significantly more than getting a CD drive
for the RPC). You could also try one fo the 'cheap and cheerful'
serial/parallel '2-machine networks' available. I don't know if any of
these work cross-platform between PC & RPC, but they might...

What about downloading the files via the modem directly onto the RPC?

> Then, I am behind a 33.6 modem, so I cannot simply download the entire
> distribution, however, I got the files I thought would be most important,
> and am hoping to use sources from one of the distros I have: Debian 2.1r2,
> SuSE 6.1 and RedHat 4.2 (I'm guessing this will be the best choice)

The easiest way to fix this problem is probably to wait a couple of weeks
and buy the imminent 'ARMLinux for RiscPC' CD from Aleph One which will
have the entire existing distribution on, somewhat tidied up and
documented to make for a straightforward install. (details will be
announced once it's actually ready). You would still have to sort out
either a CD ROM or a network for the RPC though.

Hope that helps.

Wookey
-- 
Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK  Tel (00 44) 1223 811679
work: http://www.aleph1.co.uk/     play: http://www.chaos.org.uk/~wookey/


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From owner-linux-arm-outgoing@vger.rutgers.edu  Mon Feb 21 21:20:23 2000
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From: Matthew King <matthew@tesco.net>
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On Mon, 21 Feb 2000, Wookey wrote:

:> and I don't have
:> any CD drivers for RISCOS. Would it be at all possible for someone to send
:> me these? 

Sorry, I should have been more clear. I have two ATAPI CD drives (48X and
2X). I was expecting to transfer the files I have (listed in my previous
post) via a CD/RW (I also have a bburner). 

Though i'm begining to realise this is a bit pointless because i need the
rpc (running riscos 3.5, btw) on the network.

Where can I get the (network) hardware for this? Preferably cheap, but
this is largely irrelevent.

Also, I now look forward to the CD w/ arm-linux on it. However, I'll still
need drivers to access my cd drive in the arm box. Surely you don't
actually need to pay for something so basic? But if I do, I guess I will.

:Hope that helps.
:
:Wookey

-- 
Matthew "TheNut" King


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From owner-linux-arm-outgoing@vger.rutgers.edu  Mon Feb 21 22:45:01 2000
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Hello,

Can anyone shed some light on the __create_page_tables  block included
below.  Thanks for you help in advance.

Scott McConnell

Does it make sense to port Linux to a diskless system? What type of
porting effort is involved?


I am having trouble understanding
what this section is trying to accomplish. I have TEXTADDR defined as
D8000. The first two stores
appear to be writing the same value to the same address. I assume '<<'
means shift left and '>>' means
shift right.

 I assume TEXTADDR is the base address of executable code? Why the
0x8000 test at the start of this code?

What advice is available for mapping physical to virtual addresses?

 /*
   * Create identity mapping for first MB of kernel.            @
Identity mapping???????????
   * map in four sections (4MB) for kernel.
   * these are marked cacheable and bufferable.
   *
   * The identity mapping will be removed by  paging_init()
   *
   * r4 = start of page table
   * r5 = physical address of start of RAM
   * r6 = physical IO address
   * r7 = byte offset into page tables for IO
   * r8 = page table flags
   */


  mov r3, #0x0c
  orr r3, r3, r8
  add r3, r3, r5                                @ Adjusted flags + start
of RAM ?????????????
  add r0, r4, r5, lsr #18
  str r3, [r0]
  add r0, r4, #(TEXTADDR - 0x8000) >> 18  @???????????????
  str r3, [r0], #4
  add r3, r3, #1 << 20
  str r3, [r0], #4
  add r3, r3, #1 << 20
  str r3, [r0], #4
  add r3, r3, #1 << 20
  str r3, [r0], #4
#ifdef CONFIG_DEBUG_LL
  /*
   * Map in IO space for serial debugging.
   * This allows debug messages to be output
   * via a serial port before paging_init.
   */
  add r0, r4, r7
  rsb r3, r7, #0x4000 @ PTRS_PER_PGD*sizeof(long)
  cmp r3, #0x0800
  addge r2, r0, #0x0800
  addlt r2, r0, r3
  orr r3, r6, r8
1:  str r3, [r0], #4
  add r3, r3, #1 << 20
  teq r0, r2
  bne 1b




Cann anyone exlains the parts I have marked for the following code:

What is __bss_start??????????

__ret:  ldr lr, __switch_data

  mcr p15, 0, r0, c1, c0                               @ Write the
control register.
  mov r0, r0                                                 @ What do
these 3 mov's do??????????????
  mov r0, r0
  mov r0, r0
  mov pc, lr

  /*
   * This code follows on after the page
   * table switch and jump above.
   *
   * r0  = processor control register
   * r1  = machine ID
   * r9  = processor ID
   */
  .align 5
__mmap_switched:
  adr r3, __switch_data + 4
  ldmia r3, {r4, r5, r6, r7, r8, sp} @ Setup stack

  mov fp, #0    @ Clear BSS
1:  cmp r4, r5
  strcc fp, [r4],#4
  bcc 1b

  str r9, [r6]   @ Save processor ID
  str r1, [r7]   @ Save machine type
#ifdef CONFIG_ALIGNMENT_TRAP
  orr r0, r0, #2   @ ...........A.                            @ What is
the A bit????????
#endif
  bic r2, r0, #2   @ Clear 'A' bit
  stmia r8, {r0, r2}   @ Save control register values


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From: Russell King - ARM Linux Admin <linux@arm.linux.org.uk>
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Subject: Re: 2.3.39 head-armv.S (__create_page_tables)
To: sam@portatec.com
Date:   Mon, 21 Feb 2000 23:01:30 +0000 (GMT)
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In-Reply-To: <38B17854.C52C62F2@portatec.com> from "S A McConnell" at Feb 21, 2000 11:39:33 AM
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S A McConnell writes:
> Can anyone shed some light on the __create_page_tables  block included
> below.  Thanks for you help in advance.

Certainly.

> Does it make sense to port Linux to a diskless system? What type of
> porting effort is involved?

Yes.  Normally zero effort is required if your system is already supported
by the kernel.  What system do you have?

> I am having trouble understanding what this section is trying to
> accomplish. I have TEXTADDR defined as D8000. The first two stores
> appear to be writing the same value to the same address. I assume '<<'
> means shift left and '>>' means shift right.
> 
> I assume TEXTADDR is the base address of executable code? Why the
> 0x8000 test at the start of this code?
> 
> What advice is available for mapping physical to virtual addresses?

Hmm, have you had any experience with ARM assembly programming?  I'd like
to know this so that I can pitch my reply appropriately.

Thanks.
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |        Russell King       linux@arm.linux.org.uk      --- ---
  | | | |  http://www.arm.linux.org.uk/~rmk/armlinux.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |

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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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Subject: Re: 2.3.39 head-armv.S (__create_page_tables)
In-Reply-To: <38B17854.C52C62F2@portatec.com>
Organization: Eric conspiracy secret labs
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On Mon, 21 Feb 2000 11:39:33 -0600, S A McConnell wrote:
> Can anyone shed some light on the __create_page_tables  block included
> below.  Thanks for you help in advance.
> 
> Scott McConnell
> 
> Does it make sense to port Linux to a diskless system? What type of
> porting effort is involved?

It makes sense, it has already been done. Almost all SA1100 ports are
diskless. Check out Nicolas Pitre's SA1100 patches at:

  ftp://ftp.netwinder.org/users/n/nico/


Erik

-- 
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2785859  Fax: +31-15-2781843  Email J.A.K.Mouw@its.tudelft.nl
WWW: http://www-ict.its.tudelft.nl/~erik/




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From owner-linux-arm-outgoing@vger.rutgers.edu  Tue Feb 22 02:22:48 2000
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From: Matthew King <matthew@tesco.net>
Reply-To: matthew.king@tesco.net
To: ARM Linux Mailing List <linux-arm@vger.rutgers.edu>
Subject: Re: Installation
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On Mon, 21 Feb 2000, Russell King - ARM Linux Admin wrote:

:Matthew King writes:
:> Though i'm begining to realise this is a bit pointless because i need the
:> rpc (running riscos 3.5, btw) on the network.
:
:Why do you think you need the RiscPC on "the network"?

Well, it's a bit pointless having a network, then getting a computer which
can't be accessed via it. And it's just fun :)

I am, of course, talking about my own personal network

Oh, and in case of confusion, having riscos on the network isn't much use,
it's linux i'm more concerned with. the only useful riscos tools, really,
are !draw and !photodesk :)

-- 
Matthew "TheNut" King


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From owner-linux-arm-outgoing@vger.rutgers.edu  Tue Feb 22 04:28:57 2000
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Date:   Tue, 22 Feb 2000 01:09:08 +0100
From: Andreas Bombe <andreas.bombe@munich.netsurf.de>
To: linux-arm@vger.rutgers.edu
Subject: bios 1.06 won't work for me
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I have sent a mail to this list some time ago asking basically the
same, now I got back to working on it:

Does anyone have the Bios 1.06 (used on EBSA-285) working with a DEC
21041-PB network card?

I can't even get it to download via serial port (using minicom with sz,
it reports missing acknowledges for the very first packet already and
doesn't get any farther).

I'd be thankful for any help.


P.S.:  Are the serial output functions synchronous/blocking?  They seem
to be, but still I'm missing output when the Bios hangs/crashes.

-- 
          Andreas E. Bombe <andreas.bombe@munich.netsurf.de>
http://home.pages.de/~andreas.bombe/                DSA key 0x04880A44

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From owner-linux-arm-outgoing@vger.rutgers.edu  Tue Feb 22 20:33:47 2000
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Date:   Tue, 22 Feb 2000 17:23:36 +0000 (GMT)
From: Wookey <wookey@aleph1.co.uk>
Subject: iscafs v0.08 - anything newer?
To: armlinux list <linux-arm@vger.rutgers.edu>
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I've been looking at iscaFS v0.08. This seems to basically work but has a
few problems, primarily with GetPartns not finding linux partitions on
some drives (anything non-adfs, and sometimes not on adfs either).

Before I spend time fixing this does anyone know if there is a newer
version than 0.08 available that I should be working from? Is anyone
looking at implementing write support? I tried emailing Phil Norman at
forrey@eh.org but got no response (maybe he's on hoiday/dead email?).

Wookey
-- 
Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK  Tel (00 44) 1223 811679
work: http://www.aleph1.co.uk/     play: http://www.chaos.org.uk/~wookey/


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From owner-linux-arm@lists.arm.linux.org.uk  Wed Feb 23 04:36:40 2000
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Date: Tue, 22 Feb 2000 23:34:46 -0500 (EST)
From: Rod Stewart <stewart@lab43.org>
To: linux-arm@lists.arm.linux.org.uk
Subject: Cross compiler RPMS (looking for testers)
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


So did you hear the one about the Compiler who went to cross the road?
He was a Cross Compiler...  (OK, so I won't take up telling jokes. :))
[Please excuse my really bad jokes.]

Looking for a few beta testers:  The first batch should work OK, although
I've only tested the i586 to armv4l versioned glibc cross gcc compiler
extensively.  I do not have any armv3l machines, so would like to know if
the rpms actually work, they should. :)

Cross Compiler RPMS for the brave, for the few, just for you...

I've uploaded my first batch of cross compiler rpms.  They may still have
some issues, but I've used them to create an ARM kernel for a NetWinder,
as well as a simple C program.  Initially they contain Linux i586, i686
hosts to target Linux armv3l and armv4l.  I've uploaded versioned (Debian,
Titan images) and non-versioned (current Rebel.com DM's, <= 3.1-15) glibcs.

What is there?  Currently I have the following:
	cross-armv4l-linux	(info and man pages, excluding glibc's)
	cross-armv4l-linux-binutils	2.9.5.0.22
	cross-armv4l-linux-gcc		2.95.2 (Patches from Scott's
	cross-armv4l-linux-gcc-c++		gcc-2.95.2-1nw4 rpm)
	cross-armv4l-linux-glibc		2.1.2
	cross-armv4l-linux-kernel-headers	2.1.13

Where do they install?  Currently they install with a base of
	/usr/TARGET-{unknown,non_versioned}-linux/
So if you get the cross compiler for target armv4l with a versioned glibc,
that would be: "/usr/armv4l-unknown-linux/"
And your path to get the compiler and binutils would be: 
	/usr/armv4l-unknown-linux/bin/

What you need:
1) Pick a host system.  Current supported hosts are:
	i586-linux, i686-linux

2) Pick a target platform.  Current supported targets are:
    versioned glibc:
	armv4l-linux, armv3l-linux
    non-versioned glibc:
	armv4l-linux, armv3l-linux
  Note: Unless you are creating static binary or kernels be certain to 
	get the correct glibc for your target.  If in doubt ask.

3) Decide what you need.
   If you only want to build the kernel then all you need is (it does not
   matter if you grab the versioned tools or non-versioned, as in this case,
   they are both the same):
	cross-TARGET-linux-binutils
	cross-TARGET-linux-gcc
	cross-TARGET-linux  (if you want info and man pages for binutils
		and gcc)

  If you want to compile programs/applications then you will also most
  likely need a glibc as well.  Now it does matter if you get the correct
  tool set.  
     If you have a versioned glibc use the "versioned" directories.
	Your base directory will be: /usr/TARGET-unknown-linux/bin
	Your programs will have a prefix of: TARGET-unknown-linux-
     If you have a non versioned glibc use the "non-versioned" directories.
	Your base directory will be: /usr/TARGET-non_versioned-linux/bin
	Your programs will have a prefix of: TARGET-non_versioned-linux-

  Now you will need:
	cross-TARGET-linux-binutils
	cross-TARGET-linux-kernel-headers
	cross-TARGET-linux-glibc
	cross-TARGET-linux-gcc
	cross-TARGET-linux-gcc-c++ (If you want to compile c++ programs,
		you will also require this one.  If you do not, skip it.)
		Note:  The cross C++ compiler has not been tested, but it
			should work. :))
	cross-TARGET-linux  (if you want info and man pages for binutils
		and gcc)

4) Now install the rpms:
	rpm -ihv cross-TARGET-linux-*
   or similar should work.
	Note:  Some of the cross-TARGET-linux-gcc-c++ rpms have a screwed up
		Requires line and will require:
			cross-armv4l-linux-gcc = 0.3_2.95.2_2.95.2
		simply use --nodeps to install this one.  It is fixed 
		in the later rpms.

%%%%%%%%%%%%%%%%%%%%%%%%
If you do not like RPMs, then you can use 
	cd /
	rpm2cpio <file.HOST.rpm> |cpio -vid
or if you are really stuck, drop me a line and I can create the tar balls,
you need.  Say which version you need converted, send it to
	stewart@lab43.org
%%%%%%%%%%%%%%%%%%%%%%%%

5) How do I use the new tools now that they are installed?
   First set your PATH environment
	Assuming TARGET is armv4l, for a versioned glibc (change as
	appropriate).  Examples for bash/sh, and chs/tcsh other shells
	may be different.
   bash/sh:
	export PATH=/usr/armv4l-unknown-linux/bin:$PATH
   csh/tcsh:
	setenv PATH "/usr/armv4l-unknown-linux/bin:$PATH"

   Now try to compile a simple program:
	file.c 
		int main (void)
		{
			printf ("Foo has barred the faz?\n");
		}

	armv4l-non_versioned-linux-gcc file.c -o file-arm
   Now copy your file-arm file over to an ARM machine, give it execute
   permission: "chmod +x file-arm", and run it: "./file-arm"

   For building kernels, read linux/Documentation/arm/README
   essentially set CROSS_COMPILE to something similar to:
	CROSS_COMPILE=/usr/armv4l-unknown-linux/bin/armv4l-unknown-linux-
   also set ARCH= in the Makefile

=================
That's about it.  Now where to get the cross compiler rpms.  Currently
they are available from the following two locations (both have the same,
files):
    ftp://ftp.nw.carleton.ca/cross/
    ftp://ftp.netwinder.org/users/s/stewart/cross/
	SRPMS
		i586-armv3l
			  (these two sets are currently building and should
			  be up by 6PMish EST, Feb. 23, 2000)
			i586-armv3l/non-versioned 
			i586-armv3l/versioned
		i586-armv4l
			i586-armv4l/versioned
			i586-armv4l/non-versioned
		i686-armv4l
			i686-armv4l/versioned
			i686-armv4l/non-versioned
		i686-armv3l
			i686-armv3l/non-versioned
			i686-armv3l/versioned

All rpms have been signed with Gnu Privacy Guard for a slightly better
security model.  The key is available at:
    ftp.nw.carleton.ca/cross/crossgnupg.gpg
    ftp.netwinder.org/users/s/stewart/cross/crossgnupg.gpg


Any questions/comments/complaints, please send them my way at (along
with the rpms you installed, and your host/targets):
	stewart@lab43.org
If you give these rpms a try please drop me a line and to let me know
how they went.  Any issues, things which you believe should be different,
or simply to say they worked on your target/hosts.  


++++++++
Short TODO list:
	- put TODO list in rpm
	- move info and man pages into sub packages
		add in the standard documentation (/usr/doc/Package)
		type stuff
	- package the rest of the GCC tree: chill, g77, ...
	- fix package descriptions in spec file
	- fix Requires for cross gcc-c++ package
	- write a howto type doc on how to use these packages, so it is
		possible to simply refer people to section 23035 subsection
		938 of the documentation :)
	- stop writing such long long e-mails, is anyone still reading
	  from the first go?
	- fix/cleanup the handling of paths in the Makefile
	- fix/cleanup the handling of paths in the rpm spec file
	- create a changelog type file
	- fix the Makefile
		make it readable
		put comments in it
		allow to append to config variables
		check recursion
	- write a readme file of how to build your own system
	- buy another case of Coca-Cola
	- generate sparc64 to armv?l cross compilers
	- generate cross compilers for other hosts/targets
	- start generating weekly builds of "unstable" trees
	- build Russell's cross compiler
	- start phase two of cross compiler project
		(con/convince someone to do the HTML :))
	- more things as the come up
	- split up gcc, binutils and glibc into their own cross srpms
	  so it is possible to build only one part of the process...
	- fix use of vendor
	- fix prefix usage
	- save disk space, delete old build trees when done
	- automatically create or complain about /usr/TARGET-VENDOR-linux
	  when building

+++++++
Why create this?  Others may find it useful, saving time in trying to 
get a cross compiler to build for them.  It is also a prelude to the
next phase of my cross compiler project...

+++++++
Useless stats:
To build this I built binutils twice, gcc three times, and glibc three
times.  These are clean builds, which do not require a previous install.

The final build is to change the prefix to the final install location.
The only real hack is the symlink in /usr which points to the
temporary build/install tree...  Have to find a way around this one

Disk space usage is about 500 MB.  Although I generally build with 1 GB
of free disk space in the build tree...

Build times:
	- i586 (Pentium MMX 233MHz) with 160 MB RAM -- approx. 6.5 hours
	- i686 (Celeron 487MHz) with 128 MB RAM -- approx. 2.5 hours

+++++++
==========================================================================
Warning:  This should work fine, but if it decides to eat your hard drive
	or any other unpleasantness I'm sorry, but that is what you get
	for using beta software and/or waking up. :)
	If your use of this software causes Pluto to no longer be
	called a planet anymore, don't say I didn't tell you so.
	Oh, and remember to close the door when you leave the Universe.
==========================================================================


Thanks for reading this far.  Give yourself a pat on the back.  :)

Remember they are out there, they are watching, they're out to get you,
they come from ...

- -Rms
Rod m. Stewart <stewart@lab43.org>

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From owner-linux-arm-outgoing@vger.rutgers.edu  Wed Feb 23 13:01:36 2000
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hi,all,i learned a lot about how to build a cross development enviroment,and I followed the instructions by Mr.chris,but some hyperlinks were outdated.Anybody could give me the specific url list and files.Thanx a lot.
  Best regards.

david  

_____________________________________________
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Hi all..

I have an ebsa285 with no angel.
I want to boot with bios-1.06.
My environments :
    binutils - 2.9.5.0.27(no patch)
    gcc - 2.95.1
    libc - 2.1.2
    PREFIX - arm-linux

I successfully install the tool-chain and make bios.elf.
 
My question is about arm-linux-objcopy.
I made a bios.bin to write bootrom using  "arm-linux-objcopy bios.elf bios.bin".
Then I wrote bios.bin at bootrom with rom writer.
But I can't boot , Nothing is coming in serial.
I don't know why bios.elf is same as bios.bin.......
 
Is there any other program to convert bios.elf to bios.bin which can be written at bootrom with ROMwriter?
 
Thank you.
 
ByungGi Baek.

==================================================
weapon100@hanmail.net 
==================================================
No. 1 �츮 ���ͳ�, ����
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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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On Thu, 24 Feb 2000 19:57:33 +0000 (KST),  �麴��  wrote:
> I have an ebsa285 with no angel.
> I want to boot with bios-1.06.
> My environments :
>     binutils - 2.9.5.0.27(no patch)
>     gcc - 2.95.1
>     libc - 2.1.2
>     PREFIX - arm-linux
> 
> I successfully install the tool-chain and make bios.elf.
>  
> My question is about arm-linux-objcopy.
> I made a bios.bin to write bootrom using  "arm-linux-objcopy bios.elf
> bios.bin".
> Then I wrote bios.bin at bootrom with rom writer.
> But I can't boot , Nothing is coming in serial.
> I don't know why bios.elf is same as bios.bin.......

Because objcopy defaults to ELF if you don't specify the output format you
want. In BLOB[1], we use:

  arm-linux-objcopy -O binary -R .note -R .comment -S bios.elf bios.bin

Objcopy supports many other formats; use "info objcopy" to find out.


Erik

[1] Boot Loader OBject, the LART bootloader, see
    http://www-ict.its.tudelft.nl/~erik/open-source/blob/

-- 
LART. 250 MIPS under one Watt.
http://www-ict.its.tudelft.nl/~erik/open-source/LART/




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From owner-linux-arm-outgoing@vger.rutgers.edu  Thu Feb 24 13:27:36 2000
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Subject: Iscafs - Change of maintainer
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OK, I have talked to Phil Norman, and he is no longer able to maintain or
develop IscaFS (The RISCOS filing system for accessing Linux ext2fs
partitions), so I've volunteered to look after this bit of lost code.
I'll stick up a web page for it shortly. 

The catch is that I have far too many other things to do right now, and
also don't claim to be a much of an expert on RISCOS image filing
systems, so if anyone out there is keen to work on this please do get in
touch/have a look.

If anyone has any comments on problems/features send them to me and I'll
construct a wishlist. 'Completed Write Support' and 'GetPartns supporting
non-ADFS drives' are already on there.

I also have a bug report saying 'it can't deal with files >64Mb' and
'after v0.05 the caching code slows things down such that playing audio
tracks glitches'. Any confirmations?

Wookey
-- 
Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK  Tel (00 44) 1223 811679
work: http://www.aleph1.co.uk/     play: http://www.chaos.org.uk/~wookey/


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From owner-linux-arm-outgoing@vger.rutgers.edu  Thu Feb 24 16:45:03 2000
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I downloaded George Frances cross tool chain and
installed it on my intel box. I was able to compile a simple test program successfully.
however, when I try to run it on the netwinder, I get
the following error messages.

./test: /lib/libc.so.6: no version information available (required by ./test)
./test: error in loading shared libraries: ./test: symbol __libc_start_main, version GLIBC_2.0 not defined in file libc.so.6 with link time reference (no version symbols)


both system are using libc-2.12.
any ideas how I might solve this problem?

thanks
phil

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On Thu, 24 Feb 2000, �麴�� wrote:

> Hi all..
> 
> I have an ebsa285 with no angel.
> I want to boot with bios-1.06.
> I successfully install the tool-chain and make bios.elf.
>  
> My question is about arm-linux-objcopy.
> I made a bios.bin to write bootrom using  "arm-linux-objcopy bios.elf bios.bin".
> Then I wrote bios.bin at bootrom with rom writer.
> But I can't boot , Nothing is coming in serial.
> I don't know why bios.elf is same as bios.bin.......

First, if you want to flash the bios at the beginning of your bootrom,
define the following in the Makefile:

	TEXTADDR        =0x41000080

Then issueing the 'make' command will finish with the 

	mkaif bios.elf bios

invocation.  The 'mkaif' tool is already included with the bios sources.
You should then flash the resulting "bios" file. That's all.

You can't use objcopy to convert ELF to binary here since .text and .data
section aren't quite contigous and objcopy'ing bios.elf to binary format
will create a +/- 1GB file !


Nicolas


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Date:   Thu, 24 Feb 2000 09:55:21 -0500
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Organization: Bright Star Engineering Inc.
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 How do I allocate a non-cached/non-buffered chunk of
 memory in the kernel ?? (an equivalent of kmalloc)

Thanks !
   Stuart

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From: Rod Stewart <stewart@lab43.org>
To: Philip Hall <phil@blazie.com>
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Subject: Re: problems with cross compiled code
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On Thu, 24 Feb 2000, Philip Hall wrote:

> I downloaded George Frances cross tool chain and installed it on my
> intel box. I was able to compile a simple test program successfully.
> however, when I try to run it on the netwinder, I get the following
> error messages.
> 
> ./test: /lib/libc.so.6: no version information available (required by
> ./test) ./test: error in loading shared libraries: ./test: symbol
> __libc_start_main, version GLIBC_2.0 not defined in file libc.so.6
> with link time reference (no version symbols)
> 
> 
> both system are using libc-2.12.
> any ideas how I might solve this problem?

Yes, George's tool chain is for a versioned glibc system.  I'm assuming
you have a default installed DM build on your Netwinder.  The current
NetWinders ship with a non versioned glibc.  The two are binary
incompatible.

If you still want to use George's tool chain, you will have to create
static binaries and you should have no problem running them...

Or if you are brave you can give my cross compiler RPMS a try.  Currently
they are built for a host system of i586, or i686.  You would most likely
want the ones available via ftp from:
	ftp://ftp.nw.carleton.ca/cross/i586-armv4l/non-versioned/
or
	ftp://ftp.netwinder.org
		/users/s/stewart/cross/i586-armv4l/non-versioned/

Good luck,
-Rms


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Subject: Re: problems with cross compiled code 
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>./test: /lib/libc.so.6: no version information available (required by ./test)
>./test: error in loading shared libraries: ./test: symbol __libc_start_main, v
>ersion GLIBC_2.0 not defined in file libc.so.6 with link time reference (no ve
>rsion symbols)

The NetWinder is using an unversioned libc but you compiled against a 
versioned copy.

>any ideas how I might solve this problem?

The easiest fix is just to build an unversioned library on your 
cross-development platform.

p.



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> How do I allocate a non-cached/non-buffered chunk of
> memory in the kernel ?? (an equivalent of kmalloc)

There is no direct equivalent.  In 2.3 kernels, see the routines in 
arch/arm/mm/consistent.c.  For 2.2 you will probably have to provide your own 
implementation using __get_free_page and __ioremap.

p.



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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 25 00:01:34 2000
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From: Nicholas Clark <nick@talking.bollo.cx>
To: linux-arm@vger.rutgers.edu
Subject: w3m
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Has anyone taken a look at w3m on ARM linux? w3m uses a garbage collection
library (http://reality.sgi.com/boehm/gc.html) that seems to have a sick
makingly hacky desire to know:

the address of the beginning and end of the data segment.
the address of cool end of the stack, which is usually the highest address in
the stack.
what registers might contain pointers
how shared libraries work (so as to find where they might be squirreling
pointers

and possibly a couple of other cringeworthily non-portable things.

Anyway, I found that with the attached patch to the gc library the gc library
appears to be happy to compile and pass its testsuite, and w3m compiles and runs
(for the time I tried it) without segving. However, I've no idea if it'sleaking
slowly, or about to suffer horrible death by freeing things it should not.

Does anyone here have any idea or experience. Have I duplicated someone else's
patching?

Nick

PS gc library has (IMHO) bad habit of just leaving plain text comments in as
   error traps, rather than using a #error
   Aaaaaaargh

*** w3m/gc/gcconfig.h.orig	Thu Nov 11 05:21:05 1999
--- w3m/gc/gcconfig.h	Thu Feb 24 17:57:33 2000
***************
*** 270,275 ****
--- 270,280 ----
  #   endif
  #   define mach_type_known
  # endif
+ # if defined(__arm__) &&  defined(__linux__)
+ #    define ARM
+ #    define LINUX
+ #    define mach_type_known
+ # endif
  
  /* Feel free to add more clauses here */
  
***************
*** 281,287 ****
  /* SYSV on an M68K actually means A/UX.					*/
  /* The distinction in these cases is usually the stack starting address */
  # ifndef mach_type_known
! 	--> unknown machine type
  # endif
  		    /* Mapping is: M68K       ==> Motorola 680X0	*/
  		    /*		   (SUNOS4,HP,NEXT, and SYSV (A/UX),	*/
--- 286,292 ----
  /* SYSV on an M68K actually means A/UX.					*/
  /* The distinction in these cases is usually the stack starting address */
  # ifndef mach_type_known
! #error	--> unknown machine type
  # endif
  		    /* Mapping is: M68K       ==> Motorola 680X0	*/
  		    /*		   (SUNOS4,HP,NEXT, and SYSV (A/UX),	*/
***************
*** 983,988 ****
--- 988,1002 ----
  #       define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
  #	define DATAEND (&_end)
  #	define HEURISTIC2
+ # endif
+ 
+ # ifdef ARM
+ #   define MACH_TYPE "ARM"
+ #   define ALIGNMENT 4
+ 		 extern int __data_start;
+ #		 define DATASTART ((ptr_t)(&__data_start))
+ #define USE_GENERIC_PUSH_REGS
+ #	define HEURISTIC1
  # endif
  
  # ifndef STACK_GROWS_UP

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From owner-linux-arm@lists.arm.linux.org.uk  Fri Feb 25 04:34:07 2000
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Date: Thu, 24 Feb 2000 23:32:25 -0500 (EST)
From: Rod Stewart <stewart@lab43.org>
To: linux-arm@lists.arm.linux.org.uk
Subject: RFC on text on versioning
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OK, I've had a number of people asking me about versioning wrt to glibc.
So I am going to add something similar to the following into my 
FAQ/README/whatever documentation.  I would appreciate any comments on my
description of the differences/what it is.

    Does it make sense?  (Consider you are a new comer to ARM Linux)
    Is it correct?
    Anything missing?
    Is it too long/short?

Thank you,
-Rms
Rod m. Stewart	<stewart@lab43.org>

-----------------
Q: What is the difference between a versioned glibc and a non versioned
glibc on ARM Linux systems?

A: In the beginning there was ARM Linux, this was originally based on libc 4.
Then work began on what was to become Glibc 2.1 (also sometimes referred to
as libc 6).  Glibc 2.1 brought a number of new enhancements and bug fixes
to the field.  This was seen as being a good thing (tm?), hackers around
the world cheered.

One of the new features of Glibc 2.1 was symbol versioning.  Symbol
versioning is seen as a good thing, but there were originally a few
problems, which have led to the confusion of today.  The following is an
excerpt from the Glibc FAQ which is a short description of symbol versioning
and why you you might want to use it.
	1.17.   What is symbol versioning good for?  Do I need it?

	{AJ} Symbol versioning solves problems that are related to
	interface changes.  One version of an interface might have been
	introduced in a previous version of the GNU C library but the
	interface or the semantics of the function has been changed in
	the meantime.  For binary compatibility with the old library, a
	newer library needs to still have the old interface for old
	programs.  On the other hand, new programs should use the new
	interface.  Symbol versioning is the solution for this problem.
	The GNU libc version 2.1 uses symbol versioning by default if  
	the installed binutils supports it.

	We don't advise building without symbol versioning, since you   
	lose binary compatibility - forever!  The binary compatibility
	you lose is not only against the previous version of the GNU  
	libc (version 2.0) but also against all future versions.

Now you ask:  If versioning is such a great thing, then why would anyone
not use it?  Essentially it amounts to how the software world works.

[Once you release something, people get really angry if you try to break
backwards compatibility with what they currently have.  They do not care
if the "fix" is for the better.  All they care about is: you broke
backwards compatibility.  They might not know what this means, but if you
tell them you are breaking it, they get upset.  They do not care if 
eventually they will have to do the upgrade, they will fight you until
the last possible moment.  Well that is my version of the story :) -Rms]

In the early development for glibc 2.1, binutils was broken with regards
to symbol versioning on ARM Linux.  This meant there was no choice but to 
build glibc without symbol versioning, a non-versioned system.

As usually happens in a case like this, someone went and released a product,
with a non-versioned glibc.  At the time it was the right thing to do,
as it was the only thing which worked then.

There has only been one main ARM Linux distribution which has been released
with a non versioned glibc.  This is the current software released from 
Rebel.com (originally it was from Corel Computer -->> Hardware Computing
Canada -->> Rebel.com).  This is normally referred to has the DM (10, 12,
3.1-15, 15) stuff.  These releases target ARMV4L systems (StrongARM, and
others).

There was also a short period of time when there was a non versioned 
release of Debian ARM was released, although most memories of it are
now lost in the depths of time.  I do not believe it is still around.

How things look today (Early 2000)?

Today things are looking better.

Distributions which use a versioned glibc include: Debian-ARM, and Titan

The only known distribution which uses a non versioned glibc is the current
stuff from Rebel.COM.  All current DM releases: 10, 12, 13, 3.1-15, all
current OS releases: 1.0, 1.1.  As well as the SD, and anything else
which has been released in the past.  Top hackers are working hourly to
fix the problem.


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From: Russell King - ARM Linux Admin <linux@arm.linux.org.uk>
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Subject: Re: allocating non-cached memory in the kernel
To: Philip.Blundell@pobox.com (Philip Blundell)
Date:   Fri, 25 Feb 2000 08:08:02 +0000 (GMT)
Cc: sja@brightstareng.com (Stuart Adams), linux-arm@vger.rutgers.edu
In-Reply-To: <E12O3u9-0001Af-00@kings-cross.london.uk.eu.org> from "Philip Blundell" at Feb 24, 2000 07:26:29 PM
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Philip Blundell writes:
> > How do I allocate a non-cached/non-buffered chunk of
> > memory in the kernel ?? (an equivalent of kmalloc)
> 
> There is no direct equivalent.  In 2.3 kernels, see the routines in 
> arch/arm/mm/consistent.c.  For 2.2 you will probably have to provide your own 
> implementation using __get_free_page and __ioremap.

Please note that in 2.3 kernels, that consistent API is currently subject to
change, and is unofficial.  ie, just because it exists, it does not mean it
should be used.

The correct API is to use the PCI consistent macros, but with a NULL pci_dev.
Please see linux/Documentation/DMA-mapping.txt for more information.
   _____
  |_____| ------------------------------------------------- ---+---+-
  |   |        Russell King       linux@arm.linux.org.uk      --- ---
  | | | |  http://www.arm.linux.org.uk/~rmk/armlinux.html    /  /  |
  | +-+-+                                                     --- -+-
  /   |               THE developer of ARM Linux              |+| /|\
 /  | | |                                                     ---  |
    +-+-+ -------------------------------------------------  /\\\  |

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From: =?ISO-8859-1?Q? "=B9=E9=BA=B4=B1=E2" ?= <weapon100@hanmail.net>
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To: linux-arm@vger.rutgers.edu
Subject: Serial kernel loading & DEC21143(bios-1.06)
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Date:   Fri, 25 Feb 2000 21:43:53 KST
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Hi all...

Thank you for your helps....

I have three more questions.

I made a bios-1.06 and wrote to bootrom successfully.
And then...

1) How can I load arm linux kernel using serial at CFG> prompt ?
   
   EBSA285 manual boot
   1- Boot Method : serial
   2- Image Number : 2
   3- Root device : 0000
   4- Argument :
   b-boot     p- pci config
   CFG>

2) Is there anyone who success to load kernel using DEC21143 ?
   Or... DEC21143 Ethernet driver is supported ..?


3) When I booted using bios-1.06, My ebsa282 hanged at pci_read_config_word().
   Who has the same experience ?

Thank you.

ByungGi Baek.
==================================================
weapon100@hanmail.net ByungGi Baek.
==================================================
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Date:   Fri, 25 Feb 2000 09:58:31 -0500 (EST)
From: Nicolas Pitre <nico@cam.org>
To: =?iso-8859-1?B?uem6tLHi?= <weapon100@hanmail.net>
Cc: linux-arm@vger.rutgers.edu
Subject: Re: Serial kernel loading & DEC21143(bios-1.06)
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On Fri, 25 Feb 2000, =B9=E9=BA=B4=B1=E2 wrote:

> 1) How can I load arm linux kernel using serial at CFG> prompt ?
>   =20
>    EBSA285 manual boot
>    1- Boot Method : serial
>    2- Image Number : 2
>    3- Root device : 0000
>    4- Argument :
>    b-boot     p- pci config
>    CFG>

Apply the attached patch against bios-1.06.  It fixes the serial code plus
other minor things.

> 2) Is there anyone who success to load kernel using DEC21143 ?
>    Or... DEC21143 Ethernet driver is supported ..?

Never tried.

> 3) When I booted using bios-1.06, My ebsa282 hanged at pci_read_config_wo=
rd().
>    Who has the same experience ?

It certainly won't help for your DEC21143 to work.


Nicolas

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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 25 17:43:09 2000
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Subject: Memory Configuration
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I'm trying to edit the memory configuration of kernel 2.3.35 with the arm
and sa-1100 patches applied. The memory configuration variables have changed
considerably since the 2.2.2 kernel. My question is where do I need to apply
changes to the code now to achieve 1 bank of 16 MB of memory? I found the
old NR_BANKS define but I can't find the PAGES_PER_BANK variable so I'm
curious where to make that mod?
Steve


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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 25 19:09:56 2000
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On Fri, 25 Feb 2000, Latham, Steve wrote:

> I'm trying to edit the memory configuration of kernel 2.3.35 with the arm
> and sa-1100 patches applied. The memory configuration variables have changed
> considerably since the 2.2.2 kernel. My question is where do I need to apply
> changes to the code now to achieve 1 bank of 16 MB of memory? I found the
> old NR_BANKS define but I can't find the PAGES_PER_BANK variable so I'm
> curious where to make that mod?

See linux/arch/arm/mm/mm-sa1100.c



Nicolas


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Russell King - ARM Linux Admin wrote:

> > I am having trouble understanding what this section is trying to
> > accomplish. I have TEXTADDR defined as D8000. The first two stores
> > appear to be writing the same value to the same address. I assume '<<'
> > means shift left and '>>' means shift right.
> >
> > I assume TEXTADDR is the base address of executable code? Why the
> > 0x8000 test at the start of this code?
> >
> > What advice is available for mapping physical to virtual addresses?
>
> Hmm, have you had any experience with ARM assembly programming?  I'd like
> to know this so that I can pitch my reply appropriately.

I am a newbie that is rapidly coming up to speed. I have all the documentation
for ARM. Our target is not one of the currently supported targets but it is in
the ARM7 family. Which  architecture should I study? I am still looking for some
information on the code that I included in my last message.

Thanks,
Scott



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From owner-linux-arm-outgoing@vger.rutgers.edu  Fri Feb 25 21:52:57 2000
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From: George France <france@crl.dec.com>
To: linux-arm@vger.rutgers.edu, linux-arm-kernel@lists.arm.linux.org.uk
Subject: Binary tar ball of i386 to armv4l (Strong-ARM) Cross Tool Chain a
	vailable for download.
Date:   Fri, 25 Feb 2000 15:43:14 -0500
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There have been so many questions and problems on the mailing list about
building a Cross Tool Chain.  We have decided to post a 38 Mbyte binary
(executable) tar-ball here:

	
http://crl.research.compaq.com/projects/personalserver/sw_download.html

it is an arm-linux cross Tool Chain.  The Tool Chain is made up of:

 	binutils-2.9.5.0.22,
	gcc-2.95.2 - C, C++, f77, CHILL, 	java and objc.
 	glibc-2.1.2. with the International crypt library. (THIS IS NOT FOR
EXPORT)

The Tool Chain is compiled for a i386 host with an armv4l target. Armv4 =
the instructions set for the SA-110, SA-1100 and SA-1110 processors. l =
little edian.


Installation notes:

The Tool Chain must be installed in /skiff/local.  It will not work from any
other path.  

The only other problem that you may have with the include files is that the
tar ball was setup for Linux 2.2.14.  You may need to setup a symbolic links
for:

           ln -s /usr/src/linux/include/asm
/skiff/local/arm-linux/include/asm
           ln -s /usr/src/linux/include/linux
/skiff/local/arm-linux/include/linux

or you could copy the /usr/src/linux/include/asm and
/usr/src/linux/include/linux directories to the
/skiff/local/arm-linux/include.  Be certain that you have run 'make
menuconfig' or equivalent, then 'make dep'.  This will verify that your
kernel tree is up-to-date and the correct symbolic links are up-to-date.

This tool chain has glibc symbol versioning.  If you are using a netwinder,
you may have to compile your code with static libs.



If there is interest, we may make a binary i386 to Strong-ARM cross gdb
available for remote debugging.


--George


George France,      france@crl.dec.com
Cambridge Research Laboratory, Compaq Computer Corporation
One Kendall Square, Building 700     MS: CRL
Cambridge, MA 02139 USA



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From: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
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On Fri, 25 Feb 2000 15:43:14 -0500, George France wrote:
> There have been so many questions and problems on the mailing list about
> building a Cross Tool Chain.  We have decided to post a 38 Mbyte binary
> (executable) tar-ball here:
> 
>     
> http://crl.research.compaq.com/projects/personalserver/sw_download.html
> 
> it is an arm-linux cross Tool Chain.  The Tool Chain is made up of:
> 
>     binutils-2.9.5.0.22,
>     gcc-2.95.2 - C, C++, f77, CHILL,    java and objc.
>     glibc-2.1.2. with the International crypt library. (THIS IS NOT FOR
> EXPORT)
> 
> The Tool Chain is compiled for a i386 host with an armv4l target. Armv4 =
> the instructions set for the SA-110, SA-1100 and SA-1110 processors. l =
> little edian.

Hmm, it's a little embarrasing for me to tell you that you have been doing
double work. I announced my tarball with almost the same specifications
(only C and C++ as languages) two weeks ago. My toolchain was built from:

  binutils-2.9.5.0.22.tar.bz2
  linux-2.2.13.tar.gz + patch-2.2.13-rmk2.gz + diff-2.2.13-rmk2-np14.gz
  gcc-2.95.2.tar.gz + gcc-2.95.2-diff-991022.gz + chris-rutter-patch-for-gcc-2.95.2
  glibc-2.1.2.tar.bz2 + glibc-crypt-2.1.tar.gz + glibc-linuxthreads-2.1.2.tar.bz2

I only announced it at the linux-arm and sa1100-linux mailing lists, maybe
I should have send the announcement to the linux-arm-kernel mailing list,
too.

My toolchain can be freely downloaded by non-US users (but also by  US
users, of course ;-), because we don't have cryptographic export rules
over here in The Netherlands.

The URL:

  http://www-ict.its.tudelft.nl/~erik/open-source/arm-linux-cross/


Erik

-- 
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2785859  Fax: +31-15-2781843  Email J.A.K.Mouw@its.tudelft.nl
WWW: http://www-ict.its.tudelft.nl/~erik/
-- 
LART. 250 MIPS under one Watt.
http://www-ict.its.tudelft.nl/~erik/open-source/LART/




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From: David J Croyle <dcroyle@csi.com>
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Subject: SA-1110 Intel Errata
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Intel's latest errata sheet for the SA-1110 mentions the 
following problem:

Incorrect Sign-Extended Value in Register After a Read buffer Allocate

After a read buffer allocate, a Load Register Signed  Halfword (LDRSH)
or
a Load Register Signed Byte (LDRSB) will not return the correct value in
the register,
due to long propagation delays in the sign extend logic.

Workaround:  Execute the command twice and the data is guaranteed to be
correctly sign extended for 
             the second read.

    Status:  No Fix

----------------------------------------------------------------------------------------

Question: Does anybody know if this is a problem with the arm-linux
kernel(s)? 

Does anybody have any ideas on how these particular instructions could
be detected and
replaced with two reads in sequence to get around this problem?

Perhaps the makefiles for the kernel can be modified to produce assembly
language listings.
These listings could then be grepped for the above two instructions and
some type of
macro or fix implemented?


Best Regards,


David J. Croyle

Foerster Instruments, Inc.

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Hi There,

On Mon, 28 Feb 2000, David J Croyle wrote:

> Intel's latest errata sheet for the SA-1110 mentions the following
> problem:

> Does anybody have any ideas on how these particular instructions could
> be detected and replaced with two reads in sequence to get around this
> problem?

  A simple 2 line patch to gcc/config/arm/arm.md would be the best way
... that is if I can ever find a definitative guide to the format of gcc
".md" files so that I would feel confident enough to touch it ... maybe
someone would knows 100% what is going on in there should make an offical
patch to be submitted to the GCC cvs tree ...

	Thanks,

		CraigN
--
      Craig Newell                email: CraigN@cheque.uq.edu.au
      Free Spirit                 icbm:  somewhere in NJ, USA



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To: dcroyle@csi.com
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Subject: Re: SA-1110 Intel Errata
In-Reply-To: Your message of "Mon, 28 Feb 2000 15:17:21 -0500"
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hi all.

I'm just porting arm-linux to our SA-1110 testing board.
(Now, NFS and telnetd are working well :)

> Question: Does anybody know if this is a problem with the arm-linux
> kernel(s)? 

No. There is no code to use "Read Buffer" in the kernel.
If you wish to use Read Buffer to some device driver, it will be a problem.

--
Takafumi Kawana

VASARA Research, Inc.

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Date:   Tue, 29 Feb 2000 17:33:50 +1100
From: Tim Lindquist <tjl@research.canon.com.au>
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Has arm linux been successfully run on this configuration.

What patches are required? Where should I look for these.

Does the PCMCIA work OK - does the kernel support
the attachment of PC Card and Cardbus devices?





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>Incorrect Sign-Extended Value in Register After a Read buffer Allocate
>[...]
>Question: Does anybody know if this is a problem with the arm-linux
>kernel(s)? 

Linux doesn't use the read buffer, so this doesn't apply.

>Does anybody have any ideas on how these particular instructions could
>be detected and replaced with two reads in sequence to get around this 
>problem?

You could hack the compiler to do so.  Unless you have a burning need I 
wouldn't really recommend that though.

p.



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>... that is if I can ever find a definitative guide to the format of gcc
>".md" files so that I would feel confident enough to touch it ...

The GCC manual? :-)

p.



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On Tue, 29 Feb 2000, Tim Lindquist wrote:

> Has arm linux been successfully run on this configuration.

On SA1110, yes.  But I didn't see any support for the SA1111 yet.

> What patches are required? Where should I look for these.

There is currently no complete patches for the SA1110 at the moment.  You
can find patches for SA1100 support at ftp.netwinder.org/users/n/nico.  
>From there adding SA1110 support is trivial.  (I'm waiting for a
yet-to-come Assabet or already made patches to add SA1110 to my diff).

> Does the PCMCIA work OK - does the kernel support
> the attachment of PC Card and Cardbus devices?

Depends...  There are scattered patches for different SA1100
implementations and kernel versions, but some work is still required to
consolidate all this.


Nicolas


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>>>>> "David" == David J Croyle <dcroyle@csi.com> writes:

 David> Intel's latest errata sheet for the SA-1110 mentions the
 David> following problem:

 David> Incorrect Sign-Extended Value in Register After a Read buffer
 David> Allocate

 David> After a read buffer allocate, a Load Register Signed Halfword
 David> (LDRSH) or a Load Register Signed Byte (LDRSB) will not return
 David> the correct value in the register, due to long propagation
 David> delays in the sign extend logic.

 David> Workaround: Execute the command twice and the data is
 David> guaranteed to be correctly sign extended for the second read.

 David> Status: No Fix

Good grief, what an ugly bug.  The workaround seems to assume there
aren't any interrupts between the two instructions!

Given that you can't count on this (in general), it sounds to me the
only real workaround is not to use those instructions at all (or maybe 
only with a register source, i.e., one where a read allocate can't
ever happen).

	paul

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Date:   Tue, 29 Feb 2000 12:16:56 -0500
From: Kamesh_Peri <kperi@lucent.com>
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Paul Koning wrote:
> 
> >>>>> "David" == David J Croyle <dcroyle@csi.com> writes:
> 
>  David> Intel's latest errata sheet for the SA-1110 mentions the
>  David> following problem:
> 
>  David> Incorrect Sign-Extended Value in Register After a Read buffer
>  David> Allocate
Hi,

I am a newbie. This question mayhave been asked before. Please bear with me.
Iam compiling gcc for arm on a pentium running linux.
I compiled the binutils successfully. Now i am trying 
to cross compile gcc. I applied the -Dinhibit_libc hack, but to no avail.
I am using gcc-2.95.2.

Thanks in advance.

Kamesh

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On Tue, 29 Feb 2000 12:16:56 -0500, Kamesh_Peri wrote:
> Paul Koning wrote:
>> 
>> >>>>> "David" == David J Croyle <dcroyle@csi.com> writes:
>> 
>>  David> Intel's latest errata sheet for the SA-1110 mentions the
>>  David> following problem:
>> 
>>  David> Incorrect Sign-Extended Value in Register After a Read buffer
>>  David> Allocate
> Hi,
> 
> I am a newbie. This question mayhave been asked before. Please bear with me.
> Iam compiling gcc for arm on a pentium running linux.
> I compiled the binutils successfully. Now i am trying 
> to cross compile gcc. I applied the -Dinhibit_libc hack, but to no avail.
> I am using gcc-2.95.2.

Hmm, this is off-topic in this thread about SA1110 Errata. Anyway, if you
can't get your cross compiler compiled, there are at least four URLs where
you can get precompiled i386-->armv4l cross compilers:

1. My own tarball. gcc-2.95.2 C and C++ compiler.
   http://www-ict.its.tudelft.nl/~erik/open-source/arm-linux-cross/
2. The Compaq Cambridge Research Lab tarball. gcc-2.95.2 C, C++, Objective
   C, Fortran77, Java and Chill (a.k.a. the complete gcc)
   http://crl.research.compaq.com/projects/personalserver/sw_download.html
3. Rod Stewart's RPMs. gcc-2.95.2 C and C++ compiler.
   ftp://ftp.nw.carleton.ca/cross/
   ftp://ftp.netwinder.org/users/s/stewart/cross/

(1) and (2) are build from (almost) the same sources, (3) uses slightly
different gcc patches (Scott Bambrough's instead of Phil Blundell's).


Erik

-- 
"people are still using Win98? Wow... VMS i could understand, but WinXX -
that's just so passe..." -- Paul Jakma on linux-kernel




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