[U-Boot] [PATCH 2/2] x86: Allow 32-bit toolchain to compile 64-bit U-Boot

[Andy Shevchenko]

On Sun, Jul 23, 2017 at 4:33 PM, Bin Meng <bmeng.cn at gmail.com> wrote:
> On Sun, Jul 23, 2017 at 8:51 PM, Andy Shevchenko
> <andy.shevchenko at gmail.com> wrote:
>> On Sun, Jul 23, 2017 at 1:48 PM, Bin Meng <bmeng.cn at gmail.com> wrote:
>>> On Sun, Jul 23, 2017 at 6:36 PM, Andy Shevchenko
>>> <andy.shevchenko at gmail.com> wrote:
>>>> On Sun, Jul 23, 2017 at 1:26 PM, Bin Meng <bmeng.cn at gmail.com> wrote:

>>>>> Sure. Reword it as "Allow toolchains that are pre-configured to build
>>>>> 32-bit codes to compile 64-bit U-Boot"?
>>>>
>>>> Hmm... The flag you are adding does enforce or allow?
>>>> So, if -m64 will still allow to compile 32-bit code, then it's
>>>> allowing, otherwise it's enforcing.
>>>> Or I miss something?
>>>
>>> -m64 will only be passed to compiler when building source files that
>>> are part of 64-bit U-Boot. For 32-bit U-Boot, it is still -m32.
>>
>> Yes, what I'm trying to understand is
>> 1. U-Boot is compiled _either_ 64-bit, _or_ 32-bit binary -- correct?
>
> 64-bit U-Boot image is a combination of 32-bit U-Boot (SPL) plus
> 64-bit U-Boot (proper). For the U-Boot proper, it has be compiled with
> 64-bit and currently -m64 is missing, primary due to the toolchain we
> previously used has implicitly -m64 configured.

Okay, thanks for patience and explanation.

Can you somehow (partially) inject this into initial subject + commit message?

-- 
With Best Regards,
Andy Shevchenko