On Tue, Apr 09, 2013 at 05:10:59PM +0200, Mats K??rrman wrote: > If watchdog is enabled, the arch/powerpc/lib/ticks.S::wait_ticks() function > calls the function specified by the WATCHDOG_RESET macro. > The wait_ticks function depends on the registers r0, r6 and r7 being > preserved however that is not guaranteed, e.g. if the reset function is a > C function this will probably overwrite r0 and cause an endless loop. > > The following patch changes to using r14+r15 instead of r6+r7 (to resemble > what would have been generated by a C compiler) and saves all necessary > registers on the stack. > > The patch has been tested on a custom MPC5125 based machine using the 512x > powerpc architecture. > > Signed-off-by: Mats Karrman <[email protected]> > Cc: Wolfgang Denk <[email protected]> > Acked-by: Joakim Tjernlund <[email protected]> > Tested-by: Stefan Roese <[email protected]>
Applied to u-boot/master, thanks! -- Tom
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