1 files changed, 79 insertions, 0 deletions
diff --git a/ppc/source/tests/basic.c b/ppc/source/tests/basic.c
new file mode 100644
index 0000000..4f34ba4
--- /dev/null
+++ b/ppc/source/tests/basic.c
@@ -0,0 +1,79 @@
+#define ET_TEST_IMPL
+#include "../test.h"
+#include <inttypes.h>
+#include <stdio.h>
+
+#define TEST_ITERATIONS 16
+
+struct test_with_iterations {
+  struct et_test_state_private_base base;
+  int iteration;
+};
+
+static int init_test_with_iterations(const struct et_state *state, void *data, et_state_init_data init_data) {
+  struct test_with_iterations *priv = data;
+  priv->iteration = 0;
+  return 0;
+}
+
+static int check_id_tick(const struct et_state *state, void *data, struct et_next_state *next_state) {
+  struct test_with_iterations *priv = data;
+  struct et_test_plan *test_plan = priv->base.plan;
+  struct et_test_plan_entry *cur = test_current(test_plan);
+  et_test_status status = TEST_PASS;
+  u16 command = 0x9000;
+
+  if ((status = test_exi_readwrite(test_plan, &command, sizeof(command), TEST_EPRIV_BASE)) != TEST_PASS) {
+    cur->status = status;
+    return test_next(test_plan, next_state);
+  }
+
+  if (command != 0x0470) {
+    test_plan_entry_set_error(cur, "bad identifier from gecko: expected 0x0470, got 0x%04" PRIx16, command);
+    status = TEST_FAIL;
+  }
+
+  cur->status = status;
+
+  if (status != TEST_PASS || ++priv->iteration >= TEST_ITERATIONS) {
+    return test_next(test_plan, next_state);
+  }
+
+  return 0;
+}
+
+TEST_DEF(check_id, "Identify Gecko (0x09)", TEST_PAUSE_ON_ERROR, init_test_with_iterations, check_id_tick, NULL, struct test_with_iterations);
+
+static int bad_commands_tick(const struct et_state *state, void *data, struct et_next_state *next_state) {
+  struct test_with_iterations *priv = data;
+  struct et_test_plan *test_plan = priv->base.plan;
+  struct et_test_plan_entry *cur = test_current(test_plan);
+  et_test_status status = TEST_PASS;
+
+  static const u16 bad_commands[] = { 0x0000, 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0xe000, 0xf000 };
+
+  for (int i = 0; i < ARRLEN(bad_commands); ++i) {
+    u16 orig_cmd = bad_commands[i];
+    u16 cmd = orig_cmd;
+    if ((status = test_exi_readwrite(test_plan, &cmd, sizeof(cmd), TEST_EPRIV_BASE)) != TEST_PASS) {
+      goto test_fail;
+    }
+
+    if (cmd != 0x0000) {
+      test_plan_entry_set_error(cur, "got bogus response from invalid command 0x%04" PRIx16 ": 0x%04" PRIx16, orig_cmd, cmd);
+      status = TEST_FAIL;
+      break;
+    }
+  }
+
+test_fail:
+  cur->status = status;
+
+  if (status != TEST_PASS || ++priv->iteration >= TEST_ITERATIONS) {
+    return test_next(test_plan, next_state);
+  }
+
+  return 0;
+}
+
+TEST_DEF(bad_commands, "Bad commands", 0, init_test_with_iterations, bad_commands_tick, NULL, struct test_with_iterations);