[PATCH v4 06/11] ARM: don't try to install secure monitor when entered in HYP mode

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When Barebox has been entered in HYP mode, the CPU is already switched
to the non-secure world and it's not possible for Barebox to install
it's own secure monitor.

Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Tested-by: Roland Hieber <r.hieber@xxxxxxxxxxxxxx>
---
 arch/arm/cpu/sm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/cpu/sm.c b/arch/arm/cpu/sm.c
index cb0bac106b5f..1246d8e3a441 100644
--- a/arch/arm/cpu/sm.c
+++ b/arch/arm/cpu/sm.c
@@ -184,6 +184,9 @@ int armv7_secure_monitor_install(void)
 		return -EINVAL;
 	}
 
+	if (__boot_cpu_mode == HYP_MODE)
+		return 0;
+
 	mmuon = get_cr() & CR_M;
 
 	vbar = get_vbar();
-- 
2.19.1


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