[U-Boot-Users] [ARM] Available patch: ARM: arm920t: Allow use of 'gd' pointer from IRQ

Peter Pearse peter.pearse at arm.com
Wed Jan 30 15:54:34 CET 2008


Harald

Your patch 

ARM: arm920t: Allow use of 'gd' pointer from IRQ

is available for test from

git://linux-arm.org/u-boot-armdev.git#071219_s3c24_gd

Please confirm that the code builds, and runs on the target board(s)

Just in case you weren't aware, the gd pointer will not be available in FIQ
interrupts
unless you add some code to initialize it (and ensure fiq r8 is preserved in
any FIQ handlers)

I shall submit a patch in future to change the ARM gd pointer to r7.

This will allow 
a) The gd pointer to to be accessed in both IRQ & FIQ handlers, without
added initialization code
b) Thumb & Thumb-2 compilation without code change in this area
c) Support for future ARM architectures.  

Regards

Peter






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