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-rw-r--r--arch/arm/kernel/setup.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index febafa0f552d..da1d1aa20ad9 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -53,6 +53,7 @@
#include <asm/traps.h>
#include <asm/unwind.h>
#include <asm/memblock.h>
+#include <asm/virt.h>
#include "atags.h"
#include "tcm.h"
@@ -703,6 +704,21 @@ static int __init meminfo_cmp(const void *_a, const void *_b)
return cmp < 0 ? -1 : cmp > 0 ? 1 : 0;
}
+void __init hyp_mode_check(void)
+{
+#ifdef CONFIG_ARM_VIRT_EXT
+ if (is_hyp_mode_available()) {
+ pr_info("CPU: All CPU(s) started in HYP mode.\n");
+ pr_info("CPU: Virtualization extensions available.\n");
+ } else if (is_hyp_mode_mismatched()) {
+ pr_warn("CPU: WARNING: CPU(s) started in wrong/inconsistent modes (primary CPU mode 0x%x)\n",
+ __boot_cpu_mode & MODE_MASK);
+ pr_warn("CPU: This may indicate a broken bootloader or firmware.\n");
+ } else
+ pr_info("CPU: All CPU(s) started in SVC mode.\n");
+#endif
+}
+
void __init setup_arch(char **cmdline_p)
{
struct machine_desc *mdesc;
@@ -748,6 +764,10 @@ void __init setup_arch(char **cmdline_p)
smp_init_cpus();
}
#endif
+
+ if (!is_smp())
+ hyp_mode_check();
+
reserve_crashkernel();
tcm_init();