[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Chou, David J]

Hi,

I am using u-boot-2015.07-rc2, using  vexpress_aemv8a_defconfig as following:
$ make vexpress_aemv8a_juno_defconfig ARCH=arm CROSS_COMPILE=aarch64-linux-android-
$ make all ARCH=arm CROSS_COMPILE=aarch64-linux-android-

And I  got  "make: *** [checkarmreloc] Error 1" at the end of the build as following:

  OBJCOPY examples/standalone/hello_world.srec
  OBJCOPY examples/standalone/smc911x_eeprom.srec
  OBJCOPY examples/standalone/hello_world.bin
  OBJCOPY examples/standalone/smc911x_eeprom.bin
  LDS     u-boot.lds
  LD      u-boot
u-boot contains unexpected relocations: R_AARCH64_ABS64
R_AARCH64_RELATIVE
make: *** [checkarmreloc] Error 1

But it generated an ELF 64-bit LSB executable, version 1 (SYSV), statically linked u-boot.  Does this u-boot still useful or how to fix the issue?

This  build error has been mentioned in http://lists.denx.de/pipermail/u-boot/2015-February/206440.html , has it been fixe?

Thanks  a lot for your help.

Best Regards,
David Chou

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Albert ARIBAUD]

Hello David,

On Fri, 17 Jul 2015 22:13:32 +0000, Chou, David J
<david.j.chou@intel.com> wrote:
> Hi,
> 
> I am using u-boot-2015.07-rc2, using  vexpress_aemv8a_defconfig as following:
> $ make vexpress_aemv8a_juno_defconfig ARCH=arm CROSS_COMPILE=aarch64-linux-android-
> $ make all ARCH=arm CROSS_COMPILE=aarch64-linux-android-
> 
> And I  got  "make: *** [checkarmreloc] Error 1" at the end of the build as following:
> 
>   OBJCOPY examples/standalone/hello_world.srec
>   OBJCOPY examples/standalone/smc911x_eeprom.srec
>   OBJCOPY examples/standalone/hello_world.bin
>   OBJCOPY examples/standalone/smc911x_eeprom.bin
>   LDS     u-boot.lds
>   LD      u-boot
> u-boot contains unexpected relocations: R_AARCH64_ABS64
> R_AARCH64_RELATIVE
> make: *** [checkarmreloc] Error 1
> 
> But it generated an ELF 64-bit LSB executable, version 1 (SYSV), statically linked u-boot.  Does this u-boot still useful or how to fix the issue?
> 
> This  build error has been mentioned in http://lists.denx.de/pipermail/u-boot/2015-February/206440.html , has it been fixe?

This error does not appear with the aarmch64 toolchain used by buildman
or with the aarmch64 toolchain from Ubuntu repositories, either for
v2015.07-rc2 or for current top of branch u-boot[-arm]/master.

Is the code you are building pure v2015.07-rc3 or does it contain any
local changes?

> Thanks  a lot for your help.
> 
> Best Regards,
> David Chou

Amicalement,
-- 
Albert.

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Albert ARIBAUD]

On Sat, 18 Jul 2015 10:43:41 +0200, Albert ARIBAUD
<albert.u.boot@aribaud.net> wrote:

> This error does not appear with the aarmch64 toolchain used by buildman
> or with the aarmch64 toolchain from Ubuntu repositories, either for

s/aarmch64/aarch64/g

Amicalement,
-- 
Albert.

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Chou, David J]

Hello Albert,

Thanks for your quick response.  The error message disappeared after I switched to use gcc-linaro-aarch64-linux-gnu-4.8-2014.04_linux tool chain from Linaro in either u-boot-2015.07-rc2 branch or latest u-boot-2015.07 branch.  

I have one question: why the following  build generated a statically linked u-boot  as showed by "$ file u-boot" followed, and also it doesn't show "ARM" after " u-boot: ELF 64-bit LSB shared object," : 
$ make distclean
$ make vexpress_aemv8a_juno_defconfig ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- 
$ make all ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-
$ file u-boot
u-boot: ELF 64-bit LSB shared object, version 1 (SYSV), statically linked, not stripped

But when I built a 32-bit arm u-boot using following command, it generated a  dynamically linked u-boot, and  "file  u-boot" shows "ARM" after " u-boot: ELF 32-bit LSB shared object,":
$ make distclean
$ make vexpress_ca15_tc2_defconfig ARCH=arm CROSS_COMPILE=arm-eabi-  
$ make all ARCH=arm CROSS_COMPILE=arm-eabi-
$ file u-boot
u-boot: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped

Is there anything wrong in my  commands (shown in following" again  to make a 64 bit aarch64 u-boot, what commands you use to generated 64 bits u-boot ?
$ make distclean
$ make vexpress_aemv8a_juno_defconfig ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- 
$ make all ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-

Is the 64bits u-boot you generated statically linked or dynamically linked when you use "file u-boot" to check it? Does "file u-boot" show "ARM" after " u-boot: ELF 64-bit LSB shared object,"?  Can you show the "file u-boot" result for your 64 bit u-boot?  

Thanks.

Best Regards,
David Chou


-----Original Message-----
From: Albert ARIBAUD [mailto:albert.u.boot at aribaud.net] 
Sent: Saturday, July 18, 2015 1:44 AM
To: Chou, David J
Cc: u-boot at lists.denx.de
Subject: Re: [U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

Hello David,

On Fri, 17 Jul 2015 22:13:32 +0000, Chou, David J <david.j.chou@intel.com> wrote:
> Hi,
> 
> I am using u-boot-2015.07-rc2, using  vexpress_aemv8a_defconfig as following:
> $ make vexpress_aemv8a_juno_defconfig ARCH=arm 
> CROSS_COMPILE=aarch64-linux-android-
> $ make all ARCH=arm CROSS_COMPILE=aarch64-linux-android-
> 
> And I  got  "make: *** [checkarmreloc] Error 1" at the end of the build as following:
> 
>   OBJCOPY examples/standalone/hello_world.srec
>   OBJCOPY examples/standalone/smc911x_eeprom.srec
>   OBJCOPY examples/standalone/hello_world.bin
>   OBJCOPY examples/standalone/smc911x_eeprom.bin
>   LDS     u-boot.lds
>   LD      u-boot
> u-boot contains unexpected relocations: R_AARCH64_ABS64 
> R_AARCH64_RELATIVE
> make: *** [checkarmreloc] Error 1
> 
> But it generated an ELF 64-bit LSB executable, version 1 (SYSV), statically linked u-boot.  Does this u-boot still useful or how to fix the issue?
> 
> This  build error has been mentioned in http://lists.denx.de/pipermail/u-boot/2015-February/206440.html , has it been fixe?

This error does not appear with the aarmch64 toolchain used by buildman or with the aarmch64 toolchain from Ubuntu repositories, either for
v2015.07-rc2 or for current top of branch u-boot[-arm]/master.

Is the code you are building pure v2015.07-rc3 or does it contain any local changes?

> Thanks  a lot for your help.
> 
> Best Regards,
> David Chou

Amicalement,
--
Albert.

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Albert ARIBAUD]

Hello David J,

On Mon, 20 Jul 2015 04:15:35 +0000, Chou, David J
<david.j.chou@intel.com> wrote:
> Hello Albert,
> 
> Thanks for your quick response.  The error message disappeared after I switched to use gcc-linaro-aarch64-linux-gnu-4.8-2014.04_linux tool chain from Linaro in either u-boot-2015.07-rc2 branch or latest u-boot-2015.07 branch.  
> 
> I have one question: why the following  build generated a statically linked u-boot  as showed by "$ file u-boot" followed, and also it doesn't show "ARM" after " u-boot: ELF 64-bit LSB shared object," : 
> $ make distclean
> $ make vexpress_aemv8a_juno_defconfig ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- 
> $ make all ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-
> $ file u-boot
> u-boot: ELF 64-bit LSB shared object, version 1 (SYSV), statically linked, not stripped
> 
> But when I built a 32-bit arm u-boot using following command, it generated a  dynamically linked u-boot, and  "file  u-boot" shows "ARM" after " u-boot: ELF 32-bit LSB shared object,":
> $ make distclean
> $ make vexpress_ca15_tc2_defconfig ARCH=arm CROSS_COMPILE=arm-eabi-  
> $ make all ARCH=arm CROSS_COMPILE=arm-eabi-
> $ file u-boot
> u-boot: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped


> Is there anything wrong in my  commands (shown in following" again  to make a 64 bit aarch64 u-boot, what commands you use to generated 64 bits u-boot ?
> $ make distclean
> $ make vexpress_aemv8a_juno_defconfig ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- 
> $ make all ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-
> 
> Is the 64bits u-boot you generated statically linked or dynamically linked when you use "file u-boot" to check it? Does "file u-boot" show "ARM" after " u-boot: ELF 64-bit LSB shared object,"?  Can you show the "file u-boot" result for your 64 bit u-boot?  

Actually, 'file' is simpy wrong.

U-boot is statically linked. U-Boot could not be dynamically linked,
since U-Boot does not run above an OS that could provide dynamic
libraries. After all, it is U-Boot's role to get such an OS to boot.

Also, while your 'file' cannot recognize the AARCH64 file, mine can:

u-boot: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, not stripped

See? "ARM aarch64".

So how come yours does not?

It's all about the database of signatures that the 'file' command uses.
mine has the signature for "ARM aarch64", yours does not.

And both yours and mine wrongly find a "dynamically linked" signature
in 32-bit ARM u-boot.

If you want to check this, copy the 32-bit u-boot ELF file over to an
ARM 32-bit target running Linux, an do an 'ldd u-boot'. This should
show you the libraries if u-boot was really dynamic. But it won't (on
my OpenRD-Client it fails with "unknown exit code" 139). Compare this
with, say, 'ldd /bin/bash', which lists the five libraries bash needs.

So the thing is, you're trusting 'file', and you should not. :)

> Thanks.

No problem.

> Best Regards,
> David Chou

Amicalement,
-- 
Albert.

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Chou, David J]

Hello Albert,

You are right.  it seems the "file' program in my Ubuntu- 12.04.5 LTS system doesn't have the aarch64 database of signatures as you said. But If I moved the 64 bit u-boot I built in my Ubuntu- 12.04.5 LTS system to an Ubuntu14.04.02 LTS system, the "file u-boot" shows " u-boot: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), statically  linked, not stripped".

So, can I conclude the way I build aarch64 u-boot by following is correct?
$ make distclean
$ make vexpress_aemv8a_juno_defconfig ARCH=arm  CROSS_COMPILE=aarch64-linux-gnu- 
$ make all ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-

Thanks.

Best Regards,
David Chou

-----Original Message-----
From: Albert ARIBAUD [mailto:albert.u.boot at aribaud.net] 
Sent: Monday, July 20, 2015 12:24 PM
To: Chou, David J
Cc: u-boot at lists.denx.de; Sood, Ritu
Subject: Re: [U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

Hello David J,

On Mon, 20 Jul 2015 04:15:35 +0000, Chou, David J <david.j.chou@intel.com> wrote:
> Hello Albert,
> 
> Thanks for your quick response.  The error message disappeared after I switched to use gcc-linaro-aarch64-linux-gnu-4.8-2014.04_linux tool chain from Linaro in either u-boot-2015.07-rc2 branch or latest u-boot-2015.07 branch.  
> 
> I have one question: why the following  build generated a statically linked u-boot  as showed by "$ file u-boot" followed, and also it doesn't show "ARM" after " u-boot: ELF 64-bit LSB shared object," : 
> $ make distclean
> $ make vexpress_aemv8a_juno_defconfig ARCH=arm 
> CROSS_COMPILE=aarch64-linux-gnu- $ make all ARCH=arm 
> CROSS_COMPILE=aarch64-linux-gnu- $ file u-boot
> u-boot: ELF 64-bit LSB shared object, version 1 (SYSV), statically 
> linked, not stripped
> 
> But when I built a 32-bit arm u-boot using following command, it generated a  dynamically linked u-boot, and  "file  u-boot" shows "ARM" after " u-boot: ELF 32-bit LSB shared object,":
> $ make distclean
> $ make vexpress_ca15_tc2_defconfig ARCH=arm CROSS_COMPILE=arm-eabi- $ 
> make all ARCH=arm CROSS_COMPILE=arm-eabi- $ file u-boot
> u-boot: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), 
> dynamically linked (uses shared libs), not stripped


> Is there anything wrong in my  commands (shown in following" again  to make a 64 bit aarch64 u-boot, what commands you use to generated 64 bits u-boot ?
> $ make distclean
> $ make vexpress_aemv8a_juno_defconfig ARCH=arm 
> CROSS_COMPILE=aarch64-linux-gnu- $ make all ARCH=arm 
> CROSS_COMPILE=aarch64-linux-gnu-
> 
> Is the 64bits u-boot you generated statically linked or dynamically linked when you use "file u-boot" to check it? Does "file u-boot" show "ARM" after " u-boot: ELF 64-bit LSB shared object,"?  Can you show the "file u-boot" result for your 64 bit u-boot?  

Actually, 'file' is simpy wrong.

U-boot is statically linked. U-Boot could not be dynamically linked, since U-Boot does not run above an OS that could provide dynamic libraries. After all, it is U-Boot's role to get such an OS to boot.

Also, while your 'file' cannot recognize the AARCH64 file, mine can:

u-boot: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, not stripped

See? "ARM aarch64".

So how come yours does not?

It's all about the database of signatures that the 'file' command uses.
mine has the signature for "ARM aarch64", yours does not.

And both yours and mine wrongly find a "dynamically linked" signature in 32-bit ARM u-boot.

If you want to check this, copy the 32-bit u-boot ELF file over to an ARM 32-bit target running Linux, an do an 'ldd u-boot'. This should show you the libraries if u-boot was really dynamic. But it won't (on my OpenRD-Client it fails with "unknown exit code" 139). Compare this with, say, 'ldd /bin/bash', which lists the five libraries bash needs.

So the thing is, you're trusting 'file', and you should not. :)

> Thanks.

No problem.

> Best Regards,
> David Chou

Amicalement,
--
Albert.

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Albert ARIBAUD]

Hello David J,

On Mon, 20 Jul 2015 22:17:49 +0000, Chou, David J
<david.j.chou@intel.com> wrote:
> Hello Albert,
> 
> You are right.  it seems the "file' program in my Ubuntu- 12.04.5 LTS system doesn't have the aarch64 database of signatures as you said. But If I moved the 64 bit u-boot I built in my Ubuntu- 12.04.5 LTS system to an Ubuntu14.04.02 LTS system, the "file u-boot" shows " u-boot: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), statically  linked, not stripped".
> 
> So, can I conclude the way I build aarch64 u-boot by following is correct?
> $ make distclean
> $ make vexpress_aemv8a_juno_defconfig   
> $ make all ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-

This is one way of building U-Boot, indeed, which should amount to the
same as the "Building the Software" instructions given in the README
file.

> Thanks.
> 
> Best Regards,
> David Chou

Amicalement,
-- 
Albert.

[U-Boot] checkarmreloc error for AArch64 (using vexpress_aemv8a_defconfig)

[Guillaume Gardet]

Hi,

While building vexpress_aemv8a_defconfig, I get the following error:
********************************************************************************
u-boot contains unexpected relocations: R_AARCH64_ABS64
R_AARCH64_RELATIVE
Makefile:1258: recipe for target 'checkarmreloc' failed
********************************************************************************

Should we update the Makefile to handle this case? Or is it a bug somewhere?


Guillaume