[U-Boot] [PATCH 4/5] iMX6Solo:SABRESD: Add the i.MX6Solo SABRESD board support

[Li Ye-B37916]

On 9/9/2014 7:41 AM, Otavio Salvador wrote:
> On Wed, Sep 3, 2014 at 4:23 AM, Li Ye-B37916 <b37916 at freescale.com> wrote:
>> On 9/2/2014 10:06 PM, Fabio Estevam wrote:
>>> On Tue, Sep 2, 2014 at 3:11 AM, Ye.Li <B37916 at freescale.com> wrote:
>>>
>>>>  #ifdef CONFIG_SUPPORT_EMMC_BOOT
>>>>  #define EMMC_ENV \
>>>>         "emmcdev=2\0" \
>>>> @@ -146,7 +155,8 @@
>>>>                         "fi; "  \
>>>>                 "fi\0" \
>>>>         EMMC_ENV          \
>>>> -       "mmcargs=setenv bootargs console=${console},${baudrate} " \
>>>> +       "smp=" CONFIG_SYS_NOSMP "\0"\
>>> Why do we need this 'smp' string?
>> This "nosmp" is intended for imx6solo on a SMP kernel, which asks SMP kernel to act as UP kernel.  If kernel supports to detect the uni-processor or multi-processor with cores number from SCU, this parameter is not necessary . But it is nice to have.  How do you think?
> is this a real mx6solo processor on this board, or is it a dual-lite
> that you only wants to use a single core to 'simulate' a solo?
>

This is a real mx6solo processor on this board. 
Your question reminders me this bootarg is indeed for simulation. In fsl release, we provide a feature to simulate the mx6dl for mx6solo. But on a real mx6solo board, this bootarg is unnecessary. 

Best regards,
Ye Li