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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 <mats.karrman@tritech.se> Cc: Wolfgang Denk <wd@denx.de> Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Tested-by: Stefan Roese <sr@denx.de> |
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| .. | ||
| _ashldi3.S | ||
| _ashrdi3.S | ||
| _lshrdi3.S | ||
| bat_rw.c | ||
| board.c | ||
| bootm.c | ||
| cache.c | ||
| extable.c | ||
| ide.c | ||
| ide.h | ||
| interrupts.c | ||
| kgdb.c | ||
| Makefile | ||
| memcpy_mpc5200.c | ||
| ppccache.S | ||
| ppcstring.S | ||
| reloc.S | ||
| spl.c | ||
| ticks.S | ||
| time.c | ||