[U-Boot] [PATCH] ARM: Add support for edb93xx boards

[Wolfgang Denk]

Dear "kevin.morfitt at fearnside-systems.co.uk",

In message <4B1E76E9.2050507 at fearnside-systems.co.uk> you wrote:
> 
> I would've thought that you need a working stack before you can run 
> 'C' code so you'd need the RAM timing set up before you could run

In general this is correct, but then - what does a C program need a
stack for? To push register contents and local variables on it. So if
you make sure not to use any, it works even without a stack ;-)

> C code hence you'd need to set the RAM timings up in assembler. 

This is not actually true. You _can_ do this in C even here.

Also, some processors and some boards provide on-chip-memory and/or
static RAM areas that can be used for an initial stack and data, and
on some processors we can lock parts of the (data) cache and use it as
RAM.

There is many ways to do this.

> At the moment the RAM timings for a specific board are set in the 
> board-specific lowlevel_init assembler code. Any change would 
> affect all s3c24x0 boards as well as the new edb93xx board.

I don't see how an implementation for a specific CPU / board would
cause changes to other processors?

Best regards,

Wolfgang Denk

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