[PATCH 2/2] xen: Limit execution to EL1 only

Xen core_init() is calling HVC which should be called from EL1 level that's why do Xen initialization only when U-Boot runs in EL1.

Signed-off-by: Michal Simek michal.simek@amd.com ---

drivers/xen/hypervisor.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/drivers/xen/hypervisor.c b/drivers/xen/hypervisor.c index 16c7c96c94e0..0b2311ba2675 100644 --- a/drivers/xen/hypervisor.c +++ b/drivers/xen/hypervisor.c @@ -264,8 +264,15 @@ void clear_evtchn(uint32_t port)

int xen_init(void) { + int el = current_el(); + debug("%s\n", __func__);

+ if (el != 1) { + puts("XEN:\tnot running from EL1\n"); + return 0; + } + map_shared_info(NULL); init_events(); init_xenbus();