sandbox: Add a test for SCSI

Add a simple uclass test for SCSI. It reads the partition table from a
disk image and checks that it looks correct.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/sandbox/dts/sandbox.dtsi

@@ -245,6 +245,10 @@
 		compatible = "sandbox,sandbox-rng";
 	};
 
+	scsi {
+		compatible = "sandbox,scsi";
+	};
+
 	sound {
 		compatible = "sandbox,sound";
 		cpu {

arch/sandbox/dts/test.dts

@@ -1158,6 +1158,11 @@
 		backlight = <&backlight 0 100>;
 	};
 
+	scsi {
+		compatible = "sandbox,scsi";
+		sandbox,filepath = "scsi.img";
+	};
+
 	smem@0 {
 		compatible = "sandbox,smem";
 	};

test/dm/Makefile

@@ -91,6 +91,7 @@ obj-$(CONFIG_DM_REGULATOR) += regulator.o
 obj-$(CONFIG_DM_RNG) += rng.o
 obj-$(CONFIG_DM_RTC) += rtc.o
 obj-$(CONFIG_SCMI_FIRMWARE) += scmi.o
+obj-$(CONFIG_SCSI) += scsi.o
 obj-$(CONFIG_DM_SERIAL) += serial.o
 obj-$(CONFIG_DM_SPI_FLASH) += sf.o
 obj-$(CONFIG_SIMPLE_BUS) += simple-bus.o

test/dm/scsi.c

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Google, Inc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <part.h>
+#include <scsi.h>
+#include <dm/test.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+/* Test that sandbox SCSI works correctly */
+static int dm_test_scsi_base(struct unit_test_state *uts)
+{
+	const struct disk_partition *info;
+	const struct disk_part *part;
+	struct udevice *dev;
+
+	ut_assertok(scsi_scan(false));
+
+	/*
+	 * We expect some sort of partition on the disk image, created by
+	 * test_ut_dm_init()
+	 */
+	ut_assertok(uclass_first_device_err(UCLASS_PARTITION, &dev));
+
+	part = dev_get_uclass_plat(dev);
+	ut_asserteq(1, part->partnum);
+
+	info = &part->gpt_part_info;
+	ut_asserteq_str("sda1", info->name);
+	ut_asserteq_str("U-Boot", info->type);
+	ut_asserteq(0x83 /* linux */, info->sys_ind);
+
+	return 0;
+}
+DM_TEST(dm_test_scsi_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

test/py/tests/test_ut.py

@@ -114,6 +114,15 @@ def test_ut_dm_init(u_boot_console):
         with open(fn, 'wb') as fh:
             fh.write(data)
 
+    # Create a file with a single partition
+    fn = u_boot_console.config.source_dir + '/scsi.img'
+    if not os.path.exists(fn):
+        data = b'\x00' * (2 * 1024 * 1024)
+        with open(fn, 'wb') as fh:
+            fh.write(data)
+        u_boot_utils.run_and_log(
+            u_boot_console, f'sfdisk {fn}', stdin=b'type=83')
+
 @pytest.mark.buildconfigspec('cmd_bootflow')
 def test_ut_dm_init_bootstd(u_boot_console):
     """Initialise data for bootflow tests"""