[U-Boot] [PATCH 01/23] imx: add i.MX8M into Kconfig

[Peng Fan]

Hi Stefano,

On Tue, Nov 28, 2017 at 06:15:30PM +0100, Stefano Babic wrote:
>Hi Peng,
>
>On 28/11/2017 13:31, Peng Fan wrote:
>> Add i.MX8M into Kconfig, create a new folder mx8m
>> dedicated for i.MX8M.
>> 
>> Signed-off-by: Peng Fan <peng.fan at nxp.com>
>> ---
>>  arch/arm/Kconfig               |  8 ++++++++
>>  arch/arm/Makefile              |  4 ++--
>>  arch/arm/mach-imx/mx8m/Kconfig | 10 ++++++++++
>>  3 files changed, 20 insertions(+), 2 deletions(-)
>>  create mode 100644 arch/arm/mach-imx/mx8m/Kconfig
>> 
>> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
>> index 30e71b2569..e579986d14 100644
>> --- a/arch/arm/Kconfig
>> +++ b/arch/arm/Kconfig
>> @@ -588,6 +588,12 @@ config ARCH_MESON
>>  	  targeted at media players and tablet computers. We currently
>>  	  support the S905 (GXBaby) 64-bit SoC.
>>  
>> +config ARCH_MX8M
>> +	bool "NXP i.MX8M platform"
>> +	select ARM64
>> +	select DM
>> +	select SUPPORT_SPL
>> +
>
>I think we should start from the beginning with support for multiple
>variants of the processor. I know there will be at least i.MX8 and
>i.MX8M, but I suppose that I am not well informed and many variants will
>come, exactly as we had with i.MX6.
>
>So we need a hierarchy: first the SOC family, then the SOC variant: MX8
>and MX8M (or whatever).
>
>But in the patches, it is not clear because ARCH = SOC = M8M.
>
>Which variants are already known ? As far as I can see, at least Quad,
>QuadMax and QuadPlus.

i.MX8M is different from Quad/QuadMax and etc. It is similar as i.MX6/7
, all is controlled by Cortex-A[x]. So I choose a new SoC family entry
here. Just like we have MX7 and MX7ULP. MX8 will be used for Quad, QuadMax
QuadX. MX8M here is used for i.MX8MQ and etc.

What do you think?

Thanks,
Peng.
>
>
>>  config ARCH_MX25
>>  	bool "NXP MX25"
>>  	select CPU_ARM926EJS
>> @@ -1157,6 +1163,8 @@ source "arch/arm/cpu/armv7/ls102xa/Kconfig"
>>  
>>  source "arch/arm/mach-imx/mx2/Kconfig"
>>  
>> +source "arch/arm/mach-imx/mx8m/Kconfig"
>> +
>>  source "arch/arm/mach-imx/mx7ulp/Kconfig"
>>  
>>  source "arch/arm/mach-imx/mx7/Kconfig"
>> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
>> index 5f1caf8f86..4db0398dde 100644
>> --- a/arch/arm/Makefile
>> +++ b/arch/arm/Makefile
>> @@ -95,11 +95,11 @@ libs-y += arch/arm/cpu/
>>  libs-y += arch/arm/lib/
>>  
>>  ifeq ($(CONFIG_SPL_BUILD),y)
>> -ifneq (,$(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_MX35)$(filter $(SOC), mx25 mx5 mx6 mx7 mx35))
>> +ifneq (,$(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_MX35)$(filter $(SOC), mx25 mx5 mx6 mx7 mx35 mx8m))
>>  libs-y += arch/arm/mach-imx/
>>  endif
>>  else
>> -ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx7 mx7ulp mx31 mx35 mxs vf610))
>> +ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx7 mx7ulp mx31 mx35 mxs mx8m vf610))
>>  libs-y += arch/arm/mach-imx/
>>  endif
>>  endif
>> diff --git a/arch/arm/mach-imx/mx8m/Kconfig b/arch/arm/mach-imx/mx8m/Kconfig
>> new file mode 100644
>> index 0000000000..3a84c2f2b0
>> --- /dev/null
>> +++ b/arch/arm/mach-imx/mx8m/Kconfig
>> @@ -0,0 +1,10 @@
>> +if ARCH_MX8M
>> +
>> +config MX8M
>> +	bool
>> +	select ROM_UNIFIED_SECTIONS
>> +
>> +config SYS_SOC
>> +	default "mx8m"
>> +
>> +endif
>> 
>
>Best regards,
>Stefano
>
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