selftests: Add test for FFA_ID_GET.
If pKVM is enabled then this checks that the ID returned is the one that
we expect. If not, it just checks that the call succeeds, as the SPM (or
another hypervisor) could assign us any ID it likes.
Signed-off-by: Andrew Walbran <qwandor@google.com>
diff --git a/lib/test_ffa.c b/lib/test_ffa.c
index 3ad044b..f998bff 100644
--- a/lib/test_ffa.c
+++ b/lib/test_ffa.c
@@ -339,6 +339,27 @@ static int __init test_get_version(void)
return 0;
}
+static int __init test_id_get(void)
+{
+ struct arm_smccc_1_2_regs ret;
+ const struct arm_smccc_1_2_regs args = { .a0 = FFA_ID_GET };
+
+ arm_smccc_1_2_smc(&args, &ret);
+
+ if (ret.a0 != FFA_SUCCESS) {
+ pr_err("FFA_ID_GET: expected FFA_SUCCESS");
+ print_error(ret);
+ return -1;
+ }
+ if (is_protected_kvm_enabled() && ret.a2 != HOST_VM_ID) {
+ pr_err("FFA_ID_GET: Expected ID %#x for host but got %#x.",
+ HOST_VM_ID, ret.a2);
+ return -1;
+ }
+
+ return 0;
+}
+
static int set_up_mailbox(void)
{
struct arm_smccc_1_2_regs ret;
@@ -586,6 +607,8 @@ static void __init selftest(void)
KSTM_CHECK_ZERO(test_invalid_smc());
pr_info("test_get_version");
KSTM_CHECK_ZERO(test_get_version());
+ pr_info("test_id_get");
+ KSTM_CHECK_ZERO(test_id_get());
pr_info("test_rxtx_map");
KSTM_CHECK_ZERO(test_rxtx_map());
pr_info("test_memory_share");
