test/dm/reset.c

   1 /*
   2  * Copyright (C) 2015 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <reset.h>
  10 #include <asm/state.h>
  11 #include <asm/test.h>
  12 #include <dm/test.h>
  13 #include <test/ut.h>
  14
  15 /* Test that we can use particular reset devices */
  16 static int dm_test_reset_base(struct unit_test_state *uts)
  17 {
  18         struct sandbox_state *state = state_get_current();
  19         struct udevice *dev;
  20
  21         /* Device 0 is the platform data device - it should never respond */
  22         ut_assertok(uclass_get_device(UCLASS_RESET, 0, &dev));
  23         ut_asserteq(-ENODEV, reset_request(dev, RESET_WARM));
  24         ut_asserteq(-ENODEV, reset_request(dev, RESET_COLD));
  25         ut_asserteq(-ENODEV, reset_request(dev, RESET_POWER));
  26
  27         /* Device 1 is the warm reset device */
  28         ut_assertok(uclass_get_device(UCLASS_RESET, 1, &dev));
  29         ut_asserteq(-EACCES, reset_request(dev, RESET_WARM));
  30         ut_asserteq(-ENOSYS, reset_request(dev, RESET_COLD));
  31         ut_asserteq(-ENOSYS, reset_request(dev, RESET_POWER));
  32
  33         state->reset_allowed[RESET_WARM] = true;
  34         ut_asserteq(-EINPROGRESS, reset_request(dev, RESET_WARM));
  35         state->reset_allowed[RESET_WARM] = false;
  36
  37         /* Device 2 is the cold reset device */
  38         ut_assertok(uclass_get_device(UCLASS_RESET, 2, &dev));
  39         ut_asserteq(-ENOSYS, reset_request(dev, RESET_WARM));
  40         ut_asserteq(-EACCES, reset_request(dev, RESET_COLD));
  41         state->reset_allowed[RESET_POWER] = false;
  42         ut_asserteq(-EACCES, reset_request(dev, RESET_POWER));
  43         state->reset_allowed[RESET_POWER] = true;
  44
  45         return 0;
  46 }
  47 DM_TEST(dm_test_reset_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  48
  49 /* Test that we can walk through the reset devices */
  50 static int dm_test_reset_walk(struct unit_test_state *uts)
  51 {
  52         struct sandbox_state *state = state_get_current();
  53
  54         /* If we generate a power reset, we will exit sandbox! */
  55         state->reset_allowed[RESET_POWER] = false;
  56         ut_asserteq(-EACCES, reset_walk(RESET_WARM));
  57         ut_asserteq(-EACCES, reset_walk(RESET_COLD));
  58         ut_asserteq(-EACCES, reset_walk(RESET_POWER));
  59
  60         /*
  61          * Enable cold reset - this should make cold reset work, plus a warm
  62          * reset should be promoted to cold, since this is the next step
  63          * along.
  64          */
  65         state->reset_allowed[RESET_COLD] = true;
  66         ut_asserteq(-EINPROGRESS, reset_walk(RESET_WARM));
  67         ut_asserteq(-EINPROGRESS, reset_walk(RESET_COLD));
  68         ut_asserteq(-EACCES, reset_walk(RESET_POWER));
  69         state->reset_allowed[RESET_COLD] = false;
  70         state->reset_allowed[RESET_POWER] = true;
  71
  72         return 0;
  73 }
  74 DM_TEST(dm_test_reset_walk, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);