dm: test: Add a test for the reset uclass

[karo-tx-uboot.git] / test / dm / reset.c

diff --git a/test/dm/reset.c b/test/dm/reset.c
new file mode 100644 (file)
index 0000000..5d53f25
--- /dev/null
+++ b/test/dm/reset.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <reset.h>
+#include <asm/state.h>
+#include <asm/test.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+/* Test that we can use particular reset devices */
+static int dm_test_reset_base(struct unit_test_state *uts)
+{
+       struct sandbox_state *state = state_get_current();
+       struct udevice *dev;
+
+       /* Device 0 is the platform data device - it should never respond */
+       ut_assertok(uclass_get_device(UCLASS_RESET, 0, &dev));
+       ut_asserteq(-ENODEV, reset_request(dev, RESET_WARM));
+       ut_asserteq(-ENODEV, reset_request(dev, RESET_COLD));
+       ut_asserteq(-ENODEV, reset_request(dev, RESET_POWER));
+
+       /* Device 1 is the warm reset device */
+       ut_assertok(uclass_get_device(UCLASS_RESET, 1, &dev));
+       ut_asserteq(-EACCES, reset_request(dev, RESET_WARM));
+       ut_asserteq(-ENOSYS, reset_request(dev, RESET_COLD));
+       ut_asserteq(-ENOSYS, reset_request(dev, RESET_POWER));
+
+       state->reset_allowed[RESET_WARM] = true;
+       ut_asserteq(-EINPROGRESS, reset_request(dev, RESET_WARM));
+       state->reset_allowed[RESET_WARM] = false;
+
+       /* Device 2 is the cold reset device */
+       ut_assertok(uclass_get_device(UCLASS_RESET, 2, &dev));
+       ut_asserteq(-ENOSYS, reset_request(dev, RESET_WARM));
+       ut_asserteq(-EACCES, reset_request(dev, RESET_COLD));
+       state->reset_allowed[RESET_POWER] = false;
+       ut_asserteq(-EACCES, reset_request(dev, RESET_POWER));
+       state->reset_allowed[RESET_POWER] = true;
+
+       return 0;
+}
+DM_TEST(dm_test_reset_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test that we can walk through the reset devices */
+static int dm_test_reset_walk(struct unit_test_state *uts)
+{
+       struct sandbox_state *state = state_get_current();
+
+       /* If we generate a power reset, we will exit sandbox! */
+       state->reset_allowed[RESET_POWER] = false;
+       ut_asserteq(-EACCES, reset_walk(RESET_WARM));
+       ut_asserteq(-EACCES, reset_walk(RESET_COLD));
+       ut_asserteq(-EACCES, reset_walk(RESET_POWER));
+
+       /*
+        * Enable cold reset - this should make cold reset work, plus a warm
+        * reset should be promoted to cold, since this is the next step
+        * along.
+        */
+       state->reset_allowed[RESET_COLD] = true;
+       ut_asserteq(-EINPROGRESS, reset_walk(RESET_WARM));
+       ut_asserteq(-EINPROGRESS, reset_walk(RESET_COLD));
+       ut_asserteq(-EACCES, reset_walk(RESET_POWER));
+       state->reset_allowed[RESET_COLD] = false;
+       state->reset_allowed[RESET_POWER] = true;
+
+       return 0;
+}
+DM_TEST(dm_test_reset_walk, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);