[U-Boot-Users] bootm as a script -- requires HUSH?

[Kumar Gala]

On Aug 7, 2008, at 3:47 PM, Wolfgang Denk wrote:

> In message <45CA6EEB-4A74-46FC-A544- 
> B71C0E922753 at kernel.crashing.org> you wrote:
>>
>> On Aug 7, 2008, at 2:34 PM, Wolfgang Denk wrote:
>>
>>> In any case, I expoect the total numbers of lines of code in U- 
>>> Boot to
>>> go down by quite an amount - for example, if we manage to get rid of
>>> all the code duplication we have now across architectures.
>>
>> I doubt this is really going to happen because the majority of code  
>> is
>> specific to the mechanism used to boot a kernel that is arch  
>> specific.
>>
>> (ie, the ePAPR style interface on PPC, the TAGs support on ARM, etc.)
>>
>> I dont see how we reduce code in that area (since it seems
>> fundamentally arch specific).
>
> There is a lot of common code - verify and uncompress the Linux kernel
> image; check for existence of, then verify and load the ramdisk, etc.

I agree that there is probably a far amount of code in lib_ppc/bootm.c  
that can be made common above it.

The ARCH specific bits seem to be the "jump" and the specific  
mechanism to pass boot information to the kernel (bd_t, fdt, ARM tags,  
etc).

- k