On 11 December 2014 at 17:42, Varad Gautam <varadgau...@gmail.com> wrote:
> On Thursday 11 December 2014 09:15 PM, Arnd Bergmann wrote:
>> On Thursday 11 December 2014 19:27:03 Varad Gautam wrote:
>>> I'm getting
>>>
>>> arch/arm/kernel/efi_phys.S: Assembler messages:
>>> arch/arm/kernel/efi_phys.S:42: Error: selected processor does not
>>> support ARM mode `isb'
>>> arch/arm/kernel/efi_phys.S:50: Error: selected processor does not
>>> support ARM mode `isb'
>>> make[1]: *** [arch/arm/kernel/efi_phys.o] Error 1
>>>
>>> when compiling the topic-leg-uefi kernel [1] with EFI_STUB support for
>>> omap2plus_defconfig (to run on a BeagleBone Black with AM335x SoC). I've
>>> checked that armv7 supports `isb`, and I've tried the kernel.org
>>> 4.6.3-nolibc toolchain [2] and the Linaro gcc-arm-none-eabi-4.8 release.
>>> The build goes fine without EFI support. I need some help figuring out
>>> what's wrong.
>>>
>> The code should be changed to use the instr_sync macro instead of
>> using the isb instruction directly.
>
> Thanks, that did it. Should I send in a fix?
Since you are building for a v7 platform, I guess this is caused by
the TI platforms building for ARMv6 .
If you send a patch to the linaro-uefi list, I'll apply it to my topic
branch and it will get pulled into the next leg-kernel release.
Changing the kernel config to disable v6 support would be a workaround.
(Given Ard Biesheuvel's upcoming core changes, this particular file
may actually disappear in future.)
/
Leif
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