[Buildroot] Problem with compile using ARM926T vs. generic_arm

[Buildroot] Problem with compile using ARM926T vs. generic_arm

[Tim Barr]

Found the answer in bug 367. Should have searched the web before I
emailed. Sorry.

Tim Barr
Development Engineer

Multi-Tech Systems, Inc.


> -----Original Message-----
> From: buildroot-bounces at busybox.net 
> [mailto:buildroot-bounces at busybox.net] On Behalf Of Tim Barr
> Sent: Wednesday, September 02, 2009 2:47 PM
> To: buildroot at uclibc.org
> Subject: [Buildroot] Problem with compile using ARM926T vs. 
> generic_arm
> 
> 
> I am trying to update my build from buildroot-2009.01 and a 
> 2.6.25 kernel to buildroot-2009.05 and a 2.6.28 kernel. When 
> I try to make the at91sam9g20dfc project, so that I have a 
> baseline configuration to modify for my board design, I get 
> an the following error if the buildroot Target Architecture 
> Variant is set to arm926t:
> 
> Tim Barr 
> Development Engineer 
> Multi-Tech Systems, Inc. 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net 
> http://lists.busybox.net/mailman/listinfo/buildroot
> 

[Buildroot] Problem with compile using ARM926T vs. generic_arm

[Peter Korsgaard]

>>>>> "Tim" == Tim Barr <tbarr@multitech.com> writes:

 Tim> Found the answer in bug 367. Should have searched the web before I
 Tim> emailed. Sorry.

Yes, notice that this is fixed in the new 2009.08 release - You might
want to give that a try instead of 2009.05.

-- 
Bye, Peter Korsgaard

[Buildroot] Problem with compile using ARM926T vs. generic_arm

[Tim Barr]

I am trying to update my build from buildroot-2009.01 and a 2.6.25
kernel to buildroot-2009.05 and a 2.6.28 kernel. When I try to make the
at91sam9g20dfc project, so that I have a baseline configuration to
modify for my board design, I get an the following error if the
buildroot Target Architecture Variant is set to arm926t:

CC arch/arm/mm/dma-mapping.o
{standard input}: Assembler messages:
{standard input}:1293: Error: selected processor does not support `pld
[ip,#0]'
{standard input}:1305: Error: selected processor does not support `pld
[ip,#0]'
{standard input}:1325: Error: selected processor does not support `pld
[ip,#0]'
make[2]: *** [arch/arm/kernel/traps.o] Error 1
make[1]: *** [arch/arm/kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
CC arch/arm/mm/extable.o
CC arch/arm/mm/fault.o
{standard input}: Assembler messages:
{standard input}:351: Error: selected processor does not support `pld
[r2,#0]'
{standard input}:367: Error: selected processor does not support `pld
[r2,#0]'
{standard input}:580: Error: selected processor does not support `pld
[r2,#0]'
{standard input}:596: Error: selected processor does not support `pld
[r2,#0]'
{standard input}:827: Error: selected processor does not support `pld
[r2,#0]'
{standard input}:855: Error: selected processor does not support `pld
[r2,#0]'
make[2]: *** [arch/arm/mm/dma-mapping.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [arch/arm/mm] Error 2

But the make succeeds if the Target Architecture Variant is set to
generic_arm. The processor is an ARM926EJ-S, so I would assume that
arm926t is the correct setting. That is the variant that I was using in
buildroot-2009.01 when I was building a 2.6.25 kernel. I am worried that
I may run into problems because the build is not tuned for an arm9. I
did notice that -march is being set to arm4vt instead of arm5vt, is that
the problem?? And if so, how is that fixed??

/usr/bin/make -j2 HOSTCC="/usr/bin/gcc" HOSTCFLAGS="" ARCH=arm
CFLAGS_KERNEL="-Os -pipe -O2
-I/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/usr/include
-I/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/include
--sysroot=/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/
-isysroot /home/falingtrea/buildroot-2009.05/build_arm/staging_dir
-mtune=arm9tdmi -march=armv4t -mabi=apcs-gnu -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64"
INSTALL_MOD_PATH=/home/falingtrea/buildroot-2009.05/project_build_arm/at
91sam9g20dfc/root
CROSS_COMPILE=/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/u
sr/bin/arm-linux-uclibc-
LDFLAGS="-L/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/lib
-L/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/usr/lib
--sysroot=/home/falingtrea/buildroot-2009.05/build_arm/staging_dir/"
LZMA="/home/falingtrea/buildroot-2009.05/toolchain_build_arm/bin/lzma"
PATH=/home/falingtrea/buildroot-2009.05/project_build_arm/at91sam9g20dfc
/u-boot-tools:/opt/timesys/toolchains/armv5l-linux/bin:/opt/timesys/bin:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
\
-C
/home/falingtrea/buildroot-2009.05/project_build_arm/at91sam9g20dfc/linu
x-2.6.28.2 uImage

Tim Barr 
Development Engineer 
Multi-Tech Systems, Inc.