[U-Boot-Users] ARM march architecture version for arm926ejs in config.mk

[Peter Pearse]

> -----Original Message-----
> From: Gururaja Hebbar K R [mailto:gururajakr at sanyo.co.in] 
> Sent: 02 April 2008 03:05
> To: u-boot-users at lists.sourceforge.net
> Cc: wd at denx.de; Peter Pearse
> Subject: ARM march architecture version for arm926ejs in config.mk
> 
> Hi,
> 
> i have seen questions on the mailing list about march for 
> arm926ejs being mentioned as -march=armv4.
> 
---snip---
> 
> But according to the Wikipedia
> (http://en.wikipedia.org/wiki/ARM_architecture ) , 
> architecture version for ARM926EJ-S  is ARMv5TEJ.

Correct
Please confirm, off list, that you can access http://infocenter.arm.com/
for your future ARM architecture investigations....

> 
> Kindly can someone explain why this is done. Previously few 
> have provided the patch but all have been rejected or not applied.

I think the position is that -march=armv4 is compatible with more toolchains
and builds code which runs on all later architectures,
whilst the correct architecture setting provides minimal benefits (to
U-Boot).

However, I'm still working on my compiler options patch,
mainly to satisfy the list comments re -msoft-float.

I hope to have it available for the next merge window.

Meanwhile you can get the current snapshot from 
www.linux-arm.org/git/u-boot-armdev.git/080212_options.

I'd be interested in your comments.

Regards

Peter