On Thu, Mar 15, 2012 at 10:01:50PM +0100, Wolfgang Denk wrote:
Dear Tom Rini,
In message CA+M6bXkBodKLkkqFseqo=BeNuL62W-MUSgsTEYgV4WLEvf1GtA@mail.gmail.com you wrote:
I don't consider it a big problem (just a bit sad) if ELDK 4.2 cannot be used for building these. However, I think it is not acceptable tobuild known-to-be-broken images. If the tool chain is too old, this shall result in a clear error message and abort of the build.
Is an #error in a common omap4/5 file sufficient or does it need to be sooner than that?
If it can be tested there, it can probably also tested before we start building at all?
I suspect no just because the kernel does this in <linux/compiler-gcc[45].h>
Why is thumb mode needed for these boards? Just because of image size?
Basically, yes. Without thumb mode we're very close (and sometimes spilling over) the size limit. Thumb takes us away from that and is a small speed increase (due to smaller sized files).
size limit means size limit for the SPL due to limitations of the ROM boot loader resp. the available RAM size?
On OMAP4 we have (after a quick peek around) 56KB SRAM but we only have 40KB of that as non-secure SRAM for use by SPL.