[U-Boot] reasons for armv5 as default

[Wolfgang Denk]

Dear Alexander Holler,

In message <4D5FE8F0.1020607 at ahsoftware.de> you wrote:
>
> Btw, while we are there, is there any reason, besides being carefull, 
> why u-boot for arm is compiled with -march=armv5(te) by default?

Because that's the lowest ARM instruction set version supported widely
across available tool chains.

> I'm just curious if there are some reasons for not using march=amrv7a 
> for armv7 platforms and don't want to start a discussion about removing 
> that default.

Well, a major reason for not doing this is that "amrv7a" is a typo :-P

Other reasons are for example explained in doc/README.omap3 or
doc/README.s5pc1xx


Best regards,

Wolfgang Denk

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