1 files changed, 53 insertions, 0 deletions
diff --git a/test/dm/mmc.c b/test/dm/mmc.c
new file mode 100644
index 00000000000..c0abea797d9
--- /dev/null
+++ b/test/dm/mmc.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Google, Inc
+ */
+
+#include <dm.h>
+#include <mmc.h>
+#include <part.h>
+#include <dm/test.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+/*
+ * Basic test of the mmc uclass. We could expand this by implementing an MMC
+ * stack for sandbox, or at least implementing the basic operation.
+ */
+static int dm_test_mmc_base(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+
+	ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev));
+
+	return 0;
+}
+DM_TEST(dm_test_mmc_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+static int dm_test_mmc_blk(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+	struct blk_desc *dev_desc;
+	int i;
+	char write[4 * 512], read[4 * 512];
+
+	ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev));
+	ut_assertok(blk_get_device_by_str("mmc", "0", &dev_desc));
+
+	/* Write a few blocks and verify that we get the same data back */
+	ut_asserteq(512, dev_desc->blksz);
+	for (i = 0; i < sizeof(write); i++)
+		write[i] = i;
+	ut_asserteq(4, blk_dwrite(dev_desc, 0, 4, write));
+	ut_asserteq(4, blk_dread(dev_desc, 0, 4, read));
+	ut_asserteq_mem(write, read, sizeof(write));
+
+	/* Now erase two of them [1 - 2] and verify all blocks */
+	memset(&write[512], '\0', 2 * 512);
+	ut_asserteq(2, blk_derase(dev_desc, 1, 2));
+	ut_asserteq(4, blk_dread(dev_desc, 0, 4, read));
+	ut_asserteq_mem(write, read, sizeof(write));
+
+	return 0;
+}
+DM_TEST(dm_test_mmc_blk, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);