[PATCH v3 02/13] ARM: append ARCH_MULTI_V7_LPAE

[gregory.clement@free-electrons.com (Gregory CLEMENT)]

On 18/04/2014 09:40, Haojian Zhuang wrote:
> On 18 April 2014 15:18, Gregory CLEMENT
> <gregory.clement@free-electrons.com> wrote:
>> On 18/04/2014 09:08, Haojian Zhuang wrote:
>>> On 18 April 2014 14:56, Gregory CLEMENT
>>> <gregory.clement@free-electrons.com> wrote:
>>>> Hi Haojian,
>>>>
>>>> On 18/04/2014 08:05, Haojian Zhuang wrote:
>>>>> Add new ARCH_MULTI_V7_LPAE config. It will select ARM_LPAE only both
>>>>> ARCH_MULTI_V6 & ARCH_MULTI_V7 is disabled.
>>>>>
>>>>> ARCH_MULTI_V7 means non-LPAE platform.
>>>>>
>>>>> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
>>>>> ---
>>>>>  arch/arm/Kconfig               | 9 ++++++++-
>>>>>  arch/arm/mach-berlin/Kconfig   | 2 +-
>>>>>  arch/arm/mach-highbank/Kconfig | 2 +-
>>>>>  arch/arm/mach-mvebu/Kconfig    | 6 +++---
>>>>>  arch/arm/mach-omap2/Kconfig    | 4 ++--
>>>>>  arch/arm/mach-qcom/Kconfig     | 2 +-
>>>>>  arch/arm/mach-shmobile/Kconfig | 2 +-
>>>>>  arch/arm/mach-tegra/Kconfig    | 2 +-
>>>>>  arch/arm/mach-vexpress/Kconfig | 2 +-
>>>>>  9 files changed, 19 insertions(+), 12 deletions(-)
>>>>>
>>>>> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
>>>>> index ab438cb..9a2214e 100644
>>>>> --- a/arch/arm/Kconfig
>>>>> +++ b/arch/arm/Kconfig
>>>>> @@ -918,12 +918,19 @@ config ARCH_MULTI_V6
>>>>>       select CPU_V6K
>>>>>
>>>>>  config ARCH_MULTI_V7
>>>>> -     bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
>>>>> +     bool "ARMv7 non-LPAE based platforms (Cortex-A5/A8/A9, PJ4, Scorpion)"
>>>> Actually some PJ4B are also non LPAE capable
>>>>
>>>>
>>>>>       default y
>>>>>       select ARCH_MULTI_V6_V7
>>>>>       select CPU_V7
>>>>>       select HAVE_SMP
>>>>>
>>>>> +config ARCH_MULTI_V7_LPAE
>>>>> +     bool "ARMv7 LPAE based platforms (Cortex-A7/A12/A15/A17, Brahma-B15, PJ4B, Krait)"
>>>> Only Armada XP is LPAE capable, and and the CPU is not a "simple" PJ4B
>>>> but a PJ4B-MP
>>>
>>> Do you mind that I append CPU_PJ4B_MP?
>>
>> Currently we make no difference in the code between PJ4B and PJ4B-MP.
>> Moreover the ARCH_MULTI_V7_LPAE vs ARCH_MULTI_V7 si done by SoC not by
>> CPU.
>>
>> Maybe I missed something, what is your proposal?
>>
> 
> Since they're same between PJ4B & PJ4B-MP, I shouldn't append a new PJ4B_MP.
> 
> I'll only use both ARCH_MULTI_V7 & ARCH_MULTI_V7_LPAE as the
> precondition on ARMADA_XP. I'll keep ARCH_MULTI_V7 as the precondition
> on other armada chips in mach-berlin directory.

In mach-mvebu actually

> 
> So when multi_v7_lpae_defconfig is appended, only ARMADA_XP is built
> from mach-berlin directory. Is it OK?

ARMADA_XP is in mach-mvebu directory, but beside this typo I am OK :)

By the way I am really happy to have the possibility to build now a
multi_v7_lpae image.


Thanks,

Gregory


> 
> Regards
> Haojian
> 


-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com