test: sf: Add a simple SPI flash test

The current test is a functional test, covering all the way from the
command line to the sandbox SPI driver. This is useful, but it is easier
to diagnose failures with a smaller test.

Add a simple test which reads and writes data and checks that it is stored
and retrieved correctly.

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

diff --git a/test/dm/sf.c b/test/dm/sf.c
index 35241b9..b23e7f8 100644 (file)
--- a/test/dm/sf.c
+++ b/test/dm/sf.c
@@ -6,6 +6,8 @@
 #include <common.h>
 #include <dm.h>
 #include <fdtdec.h>
+#include <mapmem.h>
+#include <os.h>
 #include <spi.h>
 #include <spi_flash.h>
 #include <asm/state.h>
@@ -13,9 +15,49 @@
 #include <dm/util.h>
 #include <test/ut.h>
 
-/* Test that sandbox SPI flash works correctly */
+/* Simple test of sandbox SPI flash */
 static int dm_test_spi_flash(struct unit_test_state *uts)
 {
+       struct udevice *dev, *emul;
+       int full_size = 0x200000;
+       int size = 0x10000;
+       u8 *src, *dst;
+       int i;
+
+       src = map_sysmem(0x20000, full_size);
+       ut_assertok(os_write_file("spi.bin", src, full_size));
+       ut_assertok(uclass_first_device_err(UCLASS_SPI_FLASH, &dev));
+
+       dst = map_sysmem(0x20000 + full_size, full_size);
+       ut_assertok(spi_flash_read_dm(dev, 0, size, dst));
+       ut_assertok(memcmp(src, dst, size));
+
+       /* Erase */
+       ut_assertok(spi_flash_erase_dm(dev, 0, size));
+       ut_assertok(spi_flash_read_dm(dev, 0, size, dst));
+       for (i = 0; i < size; i++)
+               ut_asserteq(dst[i], 0xff);
+
+       /* Write some new data */
+       for (i = 0; i < size; i++)
+               src[i] = i;
+       ut_assertok(spi_flash_write_dm(dev, 0, size, src));
+       ut_assertok(spi_flash_read_dm(dev, 0, size, dst));
+       ut_assertok(memcmp(src, dst, size));
+
+       /*
+        * Since we are about to destroy all devices, we must tell sandbox
+        * to forget the emulation device
+        */
+       sandbox_sf_unbind_emul(state_get_current(), 0, 0);
+
+       return 0;
+}
+DM_TEST(dm_test_spi_flash, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Functional test that sandbox SPI flash works correctly */
+static int dm_test_spi_flash_func(struct unit_test_state *uts)
+{
        /*
         * Create an empty test file and run the SPI flash tests. This is a
         * long way from being a unit test, but it does test SPI device and
@@ -39,4 +81,4 @@ static int dm_test_spi_flash(struct unit_test_state *uts)
 
        return 0;
 }
-DM_TEST(dm_test_spi_flash, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+DM_TEST(dm_test_spi_flash_func, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);