> On Thursday 24 September 2015 07:27:10 Huan Wang wrote: > > > On Fri, Sep 18, 2015 at 4:38 AM, Huan Wang > > > <alison.w...@freescale.com> > > > wrote: > > > > > > > [Alison Wang] Thanks for your reply. I agreed with you about > > > > creating a new multi_v7_lpae_defconfig. In > > > > multi_v7_lpae_defconfig, I need to add the following CONFIG_XX to > > > > support LS1021A based on > > > multi_v7_defconfig. > > > > > > > > CONFIG_ARM_LPAE=y > > > > CONFIG_VMSPLIT_2G=y > > > > > > Is CONFIG_VMSPLIT_2G=y really needed? > > [Alison Wang] I tried to remove CONFIG_VMSPLIT_2G and used the default > > CONFIG_VMSPLIT_3G, but kernel could not boot up. It hangs at " Starting > kernel ... ". > > > > Any suggestion? Thanks. > > Try enabling DEBUG_LL for your platform to get some debug output, if you > still don't get any helpful messages, try also inserting > > printascii(__func__); > > statements in the early boot process to see how far you get before the hang. > [Alison Wang] I can get to __turn_mmu_on or later, but I could not get the print message "Booting Linux on physical CPU 0xf00" in smp_setup_processor_id().
I guess something wrong with the initial page tables in __create_page_tables, as for CONFIG_VMSPLIT_3G, only PAGE_OFFSET is changed from 0x80000000 to 0xC0000000. BTW, on our platform, TEXT_OFFSET is 0x00008000, PHYS_OFFSET is 0x80000000. Any suggestion? Thanks. Best Regards, Alison Wang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/