Hi Mark, On 03/06/2015 09:18 PM, Chanwoo Choi wrote: > Hi, > > On 03/06/2015 08:40 PM, Mark Rutland wrote: [snip] >> >>>>>>>> I take it CPUs boot at EL2? >>>>>> >>>>>> Do the CPUs boot at EL1 or EL2? >>>>> >>>>> Unfortunately, I cannot check the secure firmware for Exynos5433 SoC. >>>>> I think that a few SoC provider probably would know it. >>>> >>>> I guess I asked the wrong question. >>>> >>>> Do CPUs enter the kernel at EL2 or at EL1? >>> >>> Could you give me a tip how to check the kernel at EL2 or EL1? >> >> Hmm... I thought we logged this but it looks like we don't. >> >> You could hack in a check of is_hyp_mode_available() and >> is_hyp_mode_mismatched(). That will tell you if EL2/hyp is available, >> and whether all CPUs enter at the same mode (mandatory per the boot >> protocol). > > OK, I'll try it. I check the return value of is_hyp_mode_available() to catch whether EL1 or EL2. The is_hyp_mode_available() returns 'false' during kernel booting. - __boot_cpu_mode[0]: 0xe11 (BOOT_CPU_MODE_EL1) - __boot_cpu_mode[1]: 0x0 Best Regards, Chanwoo Choi -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
