[U-Boot-Users] [patch 0/3] KB9202 CodeSourcery ARM EABI toolchain build fixes

[U-Boot-Users] [patch 0/3] KB9202 CodeSourcery ARM EABI toolchain build fixes

[Johannes Stezenbach]

Hi,

I'm pretty new to u-boot and ARM stuff, so please
review carefully.

I wanted to build u-boot-1.3.0-rc3 for the KwikByte KB9202 board
with the current ARM toolchain from CodeSourcery.
I needed the following three patches to get it to build.

The first one is probably a bugfix needed for other toolchains, too.

The other two patches are specific to the CodeSourcery toolchain
(or probably to any EABI toolchain with gcc-4.2.x). I haven't
checked if they break the build for other ARM toolchains, so
it's probably better to not apply them unless someone else
confirms they're OK.


Regards,
Johannes

[U-Boot-Users] [patch 1/3] KB9202 compile fix

[Johannes Stezenbach]

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[U-Boot-Users] [patch 2/3] KB9202 EABI build with CodeSourcery EABI toolchain

[Johannes Stezenbach]

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[U-Boot-Users] [patch 3/3] KB9202 build fix for CodeSourcery EABI toolchain

[Johannes Stezenbach]

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[U-Boot-Users] [patch 1/3] KB9202 compile fix

[Wolfgang Denk]

In message <20071025161107.169028618@sig21.net> you wrote:
> KB9202 compile fix
> 
> Problem observed with CodeSourcery EABI toolchain
> (arm-2007q3-51-arm-none-linux-gnueabi)
...
> --- a/include/configs/kb9202.h	Fri Oct 19 18:22:38 2007 +0200
> +++ b/include/configs/kb9202.h	Fri Oct 19 18:34:12 2007 +0200
> @@ -57,7 +57,7 @@
>  /*
>   * Size of malloc() pool
>   */
> -#define CFG_MALLOC_LEN	(CFG_ENV_SIZE + 128*1024)
> +#define CFG_MALLOC_LEN	(128*1024)
>  #define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */

This seems to be broken for me, especially for bigger environments.

NAK.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Every solution breeds new problems.

[U-Boot-Users] [patch 2/3] KB9202 EABI build with CodeSourcery EABI toolchain

[Wolfgang Denk]

In message <20071025161107.465063527@sig21.net> you wrote:
> KB9202 EABI build with CodeSourcery EABI toolchain
> (arm-2007q3-51-arm-none-linux-gnueabi)
> 
> Signed-off-by: Johannes Stezenbach <js@sig21.net>
> 
> diff -r 1f24112792e7 -r aeff4cd3d1be cpu/arm920t/config.mk
> --- a/cpu/arm920t/config.mk	Fri Oct 19 18:34:12 2007 +0200
> +++ b/cpu/arm920t/config.mk	Fri Oct 19 18:35:39 2007 +0200
> @@ -24,11 +24,10 @@ PLATFORM_RELFLAGS += -fno-strict-aliasin
>  PLATFORM_RELFLAGS += -fno-strict-aliasing  -fno-common -ffixed-r8 \
>  	-msoft-float
>  
> -PLATFORM_CPPFLAGS += -march=armv4
> +PLATFORM_CPPFLAGS += -march=armv4t
>  # =========================================================================
>  #
>  # Supply options according to compiler version
>  #
>  # =========================================================================
> -PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
>  PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))

Did you test this modification with other tool chains? Which ones?
Which compiler / binutils versions?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
On my planet, to rest is to rest -- to cease using energy. To me,  it
is  quite  illogical to run up and down on green grass, using energy,
instead of saving it.
	-- Spock, "Shore Leave", stardate 3025.2

[U-Boot-Users] [patch 2/3] KB9202 EABI build with CodeSourcery EABI toolchain

[Johannes Stezenbach]

On Sat, Nov 03, 2007, Wolfgang Denk wrote:
> In message <20071025161107.465063527@sig21.net> you wrote:
> > KB9202 EABI build with CodeSourcery EABI toolchain
> > (arm-2007q3-51-arm-none-linux-gnueabi)
> > 
> > Signed-off-by: Johannes Stezenbach <js@sig21.net>
> > 
> > diff -r 1f24112792e7 -r aeff4cd3d1be cpu/arm920t/config.mk
> > --- a/cpu/arm920t/config.mk	Fri Oct 19 18:34:12 2007 +0200
> > +++ b/cpu/arm920t/config.mk	Fri Oct 19 18:35:39 2007 +0200
> > @@ -24,11 +24,10 @@ PLATFORM_RELFLAGS += -fno-strict-aliasin
> >  PLATFORM_RELFLAGS += -fno-strict-aliasing  -fno-common -ffixed-r8 \
> >  	-msoft-float
> >  
> > -PLATFORM_CPPFLAGS += -march=armv4
> > +PLATFORM_CPPFLAGS += -march=armv4t
> >  # =========================================================================
> >  #
> >  # Supply options according to compiler version
> >  #
> >  # =========================================================================
> > -PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
> >  PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
> 
> Did you test this modification with other tool chains? Which ones?
> Which compiler / binutils versions?

No, I only tested with the toolchain ARM Ltd. recommends,
and the patch was originally created against the U-Boot
version with ARM offers for download (but tested against
1.3.0-rc3).
http://www.arm.com/products/os/linux.html
http://www.arm.com/linux/U-Boot-src.tar.gz

The arm-2007q3-51 toolchain has:
* binutils-2.18.50.20070820
* gcc-4.2.1
* glibc-2.5
* gdb-6.6.50.20070821-cvs

Maybe the ARM custodian can comment.


Thanks,
Johannes

[U-Boot-Users] [patch 1/3] KB9202 compile fix

[Johannes Stezenbach]

On Sat, Nov 03, 2007 at 10:27:07PM +0100, Wolfgang Denk wrote:
> In message <20071025161107.169028618@sig21.net> you wrote:
> > KB9202 compile fix
> > 
> > Problem observed with CodeSourcery EABI toolchain
> > (arm-2007q3-51-arm-none-linux-gnueabi)
> ...
> > --- a/include/configs/kb9202.h	Fri Oct 19 18:22:38 2007 +0200
> > +++ b/include/configs/kb9202.h	Fri Oct 19 18:34:12 2007 +0200
> > @@ -57,7 +57,7 @@
> >  /*
> >   * Size of malloc() pool
> >   */
> > -#define CFG_MALLOC_LEN	(CFG_ENV_SIZE + 128*1024)
> > +#define CFG_MALLOC_LEN	(128*1024)
> >  #define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */
> 
> This seems to be broken for me, especially for bigger environments.
> 
> NAK.

I would've hoped for a better suggestion. Currently I don't know
if the problem is caused by a binutils issue with the CodeSourcery
toolchain, or if kb9202 is broken with any toolchain.

Anyway, what I did was to grep for CFG_MALLOC_LEN and the majority
of the other configs don't add CFG_ENV_SIZE here.


Thanks,
Johannes

[U-Boot-Users] [patch 2/3] KB9202 EABI build withCodeSourcery EABI toolchain

[Peter Pearse]

 

> -----Original Message-----
> From: u-boot-users-bounces at lists.sourceforge.net 
> [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf 
> Of Johannes Stezenbach
> Sent: 03 November 2007 22:21
> To: Wolfgang Denk
> Cc: u-boot-users at lists.sourceforge.net
> Subject: Re: [U-Boot-Users] [patch 2/3] KB9202 EABI build 
> withCodeSourcery EABI toolchain
> 
> Maybe the ARM custodian can comment.
> 

Given that U-Boot is a standalone binary, I am content that the U-Boot main 
tree should build with current version of the ELDK 
- individual users may then port locally to their preferred toolchains 
as required/desired.

This avoids the combinatorial explosion of testing with multiple toolchains.

Not that this should stop users submitting their local toolchain 
patches to the list and/or discussing the use of other toolchains.

> 
> Thanks,
> Johannes
> 

[U-Boot-Users] [patch 2/3] KB9202 EABI build withCodeSourcery EABI toolchain

[Johannes Stezenbach]

On Mon, Nov 05, 2007, Peter Pearse wrote:
> > -----Original Message-----
> > 
> > Maybe the ARM custodian can comment.
> 
> Given that U-Boot is a standalone binary, I am content that the U-Boot main 
> tree should build with current version of the ELDK 
> - individual users may then port locally to their preferred toolchains 
> as required/desired.

Fair enough.

> This avoids the combinatorial explosion of testing with multiple toolchains.
> 
> Not that this should stop users submitting their local toolchain 
> patches to the list and/or discussing the use of other toolchains.

Maintaining a second toolchain installation is more work than
to create a few build fix patches. And I'm happy to share them
even if they can't be merged.


Thanks,
Johannes

[U-Boot-Users] [patch 2/3] KB9202 EABI build withCodeSourcery EABI toolchain

[Wolfgang Denk]

In message <20071105103712.GB30679@sig21.net> you wrote:
>
> > Given that U-Boot is a standalone binary, I am content that the U-Boot main 
> > tree should build with current version of the ELDK 
> > - individual users may then port locally to their preferred toolchains 
> > as required/desired.
> 
> Fair enough.

Actually I'd like to keep incompatibilities between ELDK and other
toolchains as small as possible; ideally, U-Boot should build with any
tool chain the end user decides to use. So the important thing is to
isolate such incompatibilities, understand why they happen and then
implement measures to deal with them - if they cannot be avoided one
way or another.

> Maintaining a second toolchain installation is more work than
> to create a few build fix patches. And I'm happy to share them
> even if they can't be merged.

It is essential that such changes are (1) verified to build with all
board at least in this architecture, and (2) we receive confirmations
from test users fromn this and from other tool chains.

If a change helps one specific toolchain without braking any already
working ones it will go in easily.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
The so-called "desktop metaphor" of today's workstations  is  instead
an  "airplane-seat"  metaphor.  Anyone who has shuffled a lap full of
papers while seated between two portly passengers will recognize  the
difference -- one can see only a very few things at once.
                                                   - Fred Brooks, Jr.

[U-Boot-Users] [patch 0/3] KB9202 CodeSourcery ARM EABI toolchainbuild fixes

[Peter Pearse]

> -----Original Message-----
> From: u-boot-users-bounces at lists.sourceforge.net 
> [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf 
> Of Johannes Stezenbach
> Sent: 25 October 2007 17:11
> To: u-boot-users at lists.sourceforge.net
> Subject: [U-Boot-Users] [patch 0/3] KB9202 CodeSourcery ARM 
> EABI toolchainbuild fixes
> 
> Hi,
> 
> I'm pretty new to u-boot and ARM stuff, so please review carefully.
>

I'll use my careful review as the reason this reply is so late ;-)
 
> I wanted to build u-boot-1.3.0-rc3 for the KwikByte KB9202 
> board with the current ARM toolchain from CodeSourcery.
> I needed the following three patches to get it to build.
> 
> The first one is probably a bugfix needed for other toolchains, too.

Thanks for this - it has alerted me to the use of 
sub rx, rx, #CONSTANT in several of the ARM .S assembler files.
Whilst sub rx, rx, #CONSTANT saves code size it does demand
that users understand their constants, what they are for and where
they are used.
For ARM #CONSTANT in this context must be capable of being formed by
rotating
an 8 bit constant in a 32 bit register 
e.g. 0x22000 is allowed whereas 0x20200 is not.

I am going to reject your patch though. It is the code that should be
changed.
I have added an action to my list of required patches 
http://www.denx.de/wiki/UBoot/PatchStatus to examine the use of constants in
the ARM assembler 
code. 

> The other two patches are specific to the CodeSourcery 
> toolchain (or probably to any EABI toolchain with gcc-4.2.x). 
> I haven't checked if they break the build for other ARM 
> toolchains, so it's probably better to not apply them unless 
> someone else confirms they're OK.
>

Thanks for submitting these - they will be of use/interest to users building
EABI code. 

However I do not propose to submit them to the main tree since they are
toolchain
specific. The standard toolchain for building U-Boot is that supplied in the
ELDK
http://www.denx.de/wiki/DULG/ELDK.
Of course many users have reasons for using others, however to support all
possible
toolchains would result in a support nightmare.....

Sorry for the delayed response

Regards

Peter

[U-Boot-Users] [patch 0/3] KB9202 CodeSourcery ARM EABI toolchainbuild fixes

[Johannes Stezenbach]

On Wed, Jan 23, 2008, Peter Pearse wrote:
> > -----Original Message-----
> > From: u-boot-users-bounces at lists.sourceforge.net 
> > [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf 
> > Of Johannes Stezenbach
> > Sent: 25 October 2007 17:11
> >
> > I wanted to build u-boot-1.3.0-rc3 for the KwikByte KB9202 
> > board with the current ARM toolchain from CodeSourcery.
> > I needed the following three patches to get it to build.
> > 
> > The first one is probably a bugfix needed for other toolchains, too.
> 
> Thanks for this - it has alerted me to the use of 
> sub rx, rx, #CONSTANT in several of the ARM .S assembler files.
> Whilst sub rx, rx, #CONSTANT saves code size it does demand
> that users understand their constants, what they are for and where
> they are used.
> For ARM #CONSTANT in this context must be capable of being formed by
> rotating
> an 8 bit constant in a 32 bit register 
> e.g. 0x22000 is allowed whereas 0x20200 is not.
> 
> I am going to reject your patch though. It is the code that should be
> changed.
> I have added an action to my list of required patches 
> http://www.denx.de/wiki/UBoot/PatchStatus to examine the use of constants in
> the ARM assembler 
> code. 

The simple patch below at least circumvents the problem
and allows u-boot to build for the kb9202. Please consider
applying this one. It is not toolchain specific.


> > The other two patches are specific to the CodeSourcery 
> > toolchain (or probably to any EABI toolchain with gcc-4.2.x). 
> > I haven't checked if they break the build for other ARM 
> > toolchains, so it's probably better to not apply them unless 
> > someone else confirms they're OK.
> >
> 
> Thanks for submitting these - they will be of use/interest to users building
> EABI code. 
> 
> However I do not propose to submit them to the main tree since they are
> toolchain
> specific. The standard toolchain for building U-Boot is that supplied in the
> ELDK
> http://www.denx.de/wiki/DULG/ELDK.
> Of course many users have reasons for using others, however to support all
> possible
> toolchains would result in a support nightmare.....


The patch propsed in

  [U-Boot-Users] [patch u-boot git 2/3] better ARM9 compiler options
  From: David Brownell <david-b@pa...> - 2008-01-18 20:55
  http://sourceforge.net/mailarchive/forum.php?thread_name=200801181250.50303.david-b%40pacbell.net&forum_name=u-boot-users

would take care of the CodeSourcery build issues, too. It should
work with any toolchain.


---
KB9202 compile fix

make -C cpu/arm920t start.o
...
start.S: Assembler messages:
start.S:205: Error: invalid constant (20200) after fixup
etc.

The environment size is the same as in the kb9202
patch available from www.kwikbyte.com.

Signed-off-by: Johannes Stezenbach <js@sig21.net>

diff --git a/include/configs/kb9202.h b/include/configs/kb9202.h
index 75d9c3b..88e8737 100644
--- a/include/configs/kb9202.h
+++ b/include/configs/kb9202.h
@@ -128,8 +128,8 @@
 #define	CFG_ENV_IS_IN_EEPROM
 
 #ifdef CONFIG_KB9202
-#define CFG_ENV_OFFSET			0x3E00
-#define CFG_ENV_SIZE			0x0200
+#define CFG_ENV_OFFSET			0x2000
+#define CFG_ENV_SIZE			0x2000
 #else
 #define CFG_ENV_OFFSET			0x1000
 #define CFG_ENV_SIZE			0x1000


Thanks,
Johannes