[U-Boot] [PATCH 0/11] MIPS: bootm updates

[Daniel Schwierzeck]

Hi Thomas,

Am 21.06.2013 21:59 schrieb "Langer Thomas (LQDE RD ST PON SW)" <
thomas.langer at lantiq.com>:
>
> Hello Daniel,
>
> sorry for being late with my questions.
>
> Daniel Schwierzeck wrote on 2013-06-09:
> >   MIPS: bootm: refactor initialisation of kernel cmdline
> >   MIPS: bootm: refactor initialisation of kernel environment
> >   MIPS: bootm: make initialisation of Linux environment optional
> >   MIPS: bootm: add support for generic relocation of init ramdisks
> >   MIPS: bootm: automatically initialise kernel cmdline variable 'mem'
> >   MIPS: bootm: automatically initialise kernel cmdline variables
 'rd_start' and 'rd_size'
>
> These patches changing the style, how parameters are given to the kernel
> (using cmdline instead of environment)

The environment is still available

>
> Can you explain a little, why this is necessary?
> Please give some references to the corresponding kernel changes or
discussions, if possible.

the current U-Boot kernel interface emulates the YAMON interface. But
almost all boards supported by the kernel are bootloader agnostic or don't
use U-Boot.

>
> And how about backward compatibility? Will it still be possible to boot
older kernels?
>
> When you automatically add  the variable 'mem', will it still be possible
> to override the memory size by manually adding it to the bootargs?
>
> Best Regards,
> Thomas
>