Hi Kumar, <snip> > +#ifdef CONFIG_FSL_CORENET > int cpu_disable(int nr) > { > - /* dummy function so common/cmd_mp.c will build */ > - return 1; > + volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); > + > + setbits_be32(&gur->coredisrl, nr); Doesn't this need to be "1 << nr"? Peter