[U-Boot] [PATCH 3/7] sunxi: Enable UBI and NAND support

[Hans de Goede]

Hi,

On 14-11-16 15:09, Maxime Ripard wrote:
> Hi,
>
> On Mon, Nov 14, 2016 at 12:18:06PM +0100, Hans de Goede wrote:
>>>  #ifdef CONFIG_SPL_SPI_SUNXI
>>> @@ -143,7 +157,14 @@
>>>  #define CONFIG_GENERIC_MMC
>>>  #define CONFIG_MMC_SUNXI
>>>  #define CONFIG_MMC_SUNXI_SLOT		0
>>> -#define CONFIG_ENV_IS_IN_MMC
>>> +#endif
>>> +
>>> +#if defined(CONFIG_ENV_IS_IN_NAND)
>>> +#define CONFIG_ENV_OFFSET			0xc00000
>>> +#define CONFIG_ENV_SIZE				0x400000
>>> +#elif defined(CONFIG_ENV_IS_IN_MMC)
>>> +#define CONFIG_ENV_OFFSET			(544 << 10) /* (8 + 24 + 512) KiB */
>>> +#define CONFIG_ENV_SIZE				(128 << 10) /* 128 KiB */
>>>  #define CONFIG_SYS_MMC_ENV_DEV		0	/* first detected MMC controller */
>>>  #endif
>>>
>>
>> I would greatly prefer putting the env in an UBI partition,
>> I thought that we had agreed on doing that ?
>
> That was mentionned a few times, but I didn't remember having a final
> decision. I'm not really sure that putting the environment in UBI
> would be a good idea.
>
> Attaching the UBI volume takes a very significant time. Doing so
> before the user can see that something is happening in the system
> feels pretty bad.

So maybe we need to print a message before doing so ?

We really need bad-block management for the environment, AFAICT
the current non UBI implementation does not even have a backup ?

Regards,

Hans