Hi Jayadev, > Hello all, > > I am currently trying to bring up Xen on OMAP5432. When I try to boot > the board it shows > > > > > > > > > *Starting kernel ...- UART enabled -- CPU 00000000 booting -- Xen > must be entered in NS Hyp mode -- Please update the bootloader -- > Boot failed -* After applying the below patch , the boot CPU started > loading. > > diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S > b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S > index 86c0e42..696da4b 100644 > --- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S > +++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S > @@ -19,7 +19,20 @@ > ENTRY(save_boot_params) > ldr r1, =OMAP_SRAM_SCRATCH_BOOT_PARAMS > str r0, [r1] > +/* > + * Turn on hypervisor mode on CPU#0 > + */ > +#ifdef CONFIG_DRA7XX_HYPERVISOR_ON > + mov r0, lr @ This is a great place to switch into hyp > mode > + @ only the r0 was needed from _start and is now > + @ free; all other general purpose registers were > + @ already free. > + ldr r12, =0x102 @ Set PL310 control register - value in R0 > + .word 0xe1600070 @ SMC #0 - hand assembled because > -march=armv5 > + @ call ROM Code API to set control register > +#else > bx lr > +#endif /* CONFIG_DRA7XX_HYPERVISOR_ON */ > ENDPROC(save_boot_params) > ENTRY(set_pl310_ctrl_reg) > > However now the secondary CPUs fail to load; > > > > > > > > *(XEN) Bringing up CPU1- CPU 00000001 booting -- Xen must be entered > in NS Hyp mode -- Please update the bootloader -- Boot failed -* > Can someone provide the proper U-boot changes required to load the > CPUs in HYP mode
Maybe between your patch (at the very beginning of boot up) and the time XEN wants to re-enable second CPU there is a switch from HYP to SVC mode? Please keep in mind that u-boot works with single core - and this single core execution mode is passed to XEN. > > Thanks and Regards > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > https://lists.denx.de/listinfo/u-boot Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot