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 jbergsa...@ti.com.
Reviewed-by: Tom Rini <tr...@konsulko.com>
Signed-off-by: Keerthy <j-keer...@ti.com>
---
arch/arm/cpu/armv7/omap-common/lowlevel_init.S | 21 +++++++++++++++++++++
1 file changed, 21 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..1026232 100644
--- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
@@ -24,6 +24,27 @@ ENTRY(save_boot_params)
str r0, [r1]
b save_boot_params_ret
ENDPROC(save_boot_params)
+
+ENTRY(switch_to_hypervisor)
+/*
+ * Switch to hypervisor mode
+ */
+ adr r0, save_sp
+ str sp, [r0]
+ adr r1, restore_from_hyp
+ ldr r0, =0x102
+#ifdef CONFIG_TI_SECURE_DEVICE
+ b omap_smc_sec
+#else
+ b omap_smc1
+#endif
+restore_from_hyp:
+ adr r0, save_sp
+ ldr sp, [r0]
+ b switch_to_hypervisor_ret
+save_sp:
+ .word 0x0
+ENDPROC(switch_to_hypervisor)
#endif
ENTRY(omap_smc1)
--
1.9.1
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