diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index cf132c3..e9baa64 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -27,6 +27,7 @@
 efi_selftest_gop.o \
 efi_selftest_loaded_image.o \
 efi_selftest_manageprotocols.o \
+efi_selftest_mem.o \
 efi_selftest_memory.o \
 efi_selftest_open_protocol.o \
 efi_selftest_register_notify.o \
diff --git a/lib/efi_selftest/efi_selftest_mem.c b/lib/efi_selftest/efi_selftest_mem.c
new file mode 100644
index 0000000..51f0fec
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_mem.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_memory
+ *
+ * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * This unit test checks the following boottime services:
+ * CopyMem, SetMem, CalculateCrc32
+ *
+ * The memory type used for the device tree is checked.
+ */
+
+#include <efi_selftest.h>
+
+static struct efi_boot_services *boottime;
+
+/**
+ * setup() - setup unit test
+ *
+ * @handle:	handle of the loaded image
+ * @systable:	system table
+ * Return:	EFI_ST_SUCCESS for success
+ */
+static int setup(const efi_handle_t handle,
+		 const struct efi_system_table *systable)
+{
+	boottime = systable->boottime;
+
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * execute() - execute unit test
+ *
+ * Return:	EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+	u8 c1[] = "abcdefghijklmnop";
+	u8 c2[] = "abcdefghijklmnop";
+	u32 crc32;
+	efi_status_t ret;
+
+	ret = boottime->calculate_crc32(c1, 16, &crc32);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("CalculateCrc32 failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (crc32 != 0x943ac093) {
+		efi_st_error("CalculateCrc32 returned wrong value\n");
+		return EFI_ST_FAILURE;
+	}
+	boottime->copy_mem(&c1[5], &c1[3], 8);
+	if (memcmp(c1, "abcdedefghijknop", 16)) {
+		efi_st_error("CopyMem forward copy failed: %s\n", c1);
+		return EFI_ST_FAILURE;
+	}
+	boottime->copy_mem(&c2[3], &c2[5], 8);
+	if (memcmp(c2, "abcfghijklmlmnop", 16)) {
+		efi_st_error("CopyMem backward copy failed: %s\n", c2);
+		return EFI_ST_FAILURE;
+	}
+	boottime->set_mem(&c1[3], 8, 'x');
+	if (memcmp(c1, "abcxxxxxxxxjknop", 16)) {
+		efi_st_error("SetMem failed: %s\n", c1);
+		return EFI_ST_FAILURE;
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(mem) = {
+	.name = "mem",
+	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+};