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
Thanks and Regards