Hi， Marc: >In short, if you're setting GICD_SGIR[24] to 1, you're sending SGI0 to >all CPUs but yourself. This seems to match the name of the function, >doesn't it? I described my understanding based on 2014.07-RC2 u-boot source code: (For ARMv8 cores) 1. smp_kick_all_cpus() will send SGI0 to all other cores except BSP. These non-BSP cores handled this SGI0 in gic_wait_for_interrupt(), and then switched to EL2/EL1 . These code is implemented in lowlevel_init in arch/arm/cpu/armv8/start.S. Is my understanding right? 2. if runing with ATF(Arm Trusted Firmware) + Uboot.bin ATF has put non-BSP cores to WFI state. So, before jumping to u-boot's entrypoint, there is only a BSP . So, smp_kick_all_cpus() could wake up these non-BSP cores?
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