Override the switch_to_hypervisor function to switch cpu to hypervisor mode using the available ROM code hook early in the boot phase before the boot loader checks for HYP mode.
Based on the work done by Jonathan Bergsagel [email protected]. Cc: [email protected] Signed-off-by: Keerthy <[email protected]> --- arch/arm/cpu/armv7/omap-common/lowlevel_init.S | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S index 66a3b3d..8ce12c8 100644 --- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S +++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S @@ -24,6 +24,30 @@ ENTRY(save_boot_params) str r0, [r1] b save_boot_params_ret ENDPROC(save_boot_params) + +#if !defined(CONFIG_TI_SECURE_DEVICE) && defined(CONFIG_ARMV7_LPAE) +ENTRY(switch_to_hypervisor) + +/* + * Switch to hypervisor mode + */ + adr r0, save_sp + str sp, [r0] + adr r1, restore_from_hyp + ldr r0, =0x102 + b omap_smc1 +restore_from_hyp: + adr r0, save_sp + ldr sp, [r0] + MRC p15, 4, R0, c1, c0, 0 + ldr r1, =0X1004 @Set cache enable bits for hypervisor mode + orr r0, r0, r1 + MCR p15, 4, R0, c1, c0, 0 + b switch_to_hypervisor_ret +save_sp: + .word 0x0 +ENDPROC(switch_to_hypervisor) +#endif #endif ENTRY(omap_smc1) -- 1.9.1 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
