dtoc: Add tests

Add some tests of dtoc's functionality to make it easier to expand and
enhance the tool.

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

1 files changed, 271 insertions, 0 deletions

diff --git a/tools/dtoc/test_dtoc.py b/tools/dtoc/test_dtoc.py
new file mode 100644
index 0000000000..8b95c4124f
--- /dev/null
+++ b/tools/dtoc/test_dtoc.py
@@ -0,0 +1,271 @@
+#
+# Copyright (c) 2012 The Chromium OS Authors.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+"""Tests for the dtb_platdata module
+
+This includes unit tests for some functions and functional tests for
+"""
+
+import collections
+import os
+import struct
+import unittest
+
+import dtb_platdata
+from dtb_platdata import conv_name_to_c
+from dtb_platdata import get_compat_name
+from dtb_platdata import get_value
+from dtb_platdata import tab_to
+import fdt
+import fdt_util
+import tools
+
+our_path = os.path.dirname(os.path.realpath(__file__))
+
+
+def get_dtb_file(dts_fname):
+    """Compile a .dts file to a .dtb
+
+    Args:
+        dts_fname: Filename of .dts file in the current directory
+
+    Returns:
+        Filename of compiled file in output directory
+    """
+    return fdt_util.EnsureCompiled(os.path.join(our_path, dts_fname))
+
+
+class TestDtoc(unittest.TestCase):
+    """Tests for dtoc"""
+    @classmethod
+    def setUpClass(cls):
+        tools.PrepareOutputDir(None)
+
+    @classmethod
+    def tearDownClass(cls):
+        tools._RemoveOutputDir()
+
+    def test_name(self):
+        """Test conversion of device tree names to C identifiers"""
+        self.assertEqual('serial_at_0x12', conv_name_to_c('serial@0x12'))
+        self.assertEqual('vendor_clock_frequency',
+                         conv_name_to_c('vendor,clock-frequency'))
+        self.assertEqual('rockchip_rk3399_sdhci_5_1',
+                         conv_name_to_c('rockchip,rk3399-sdhci-5.1'))
+
+    def test_tab_to(self):
+        """Test operation of tab_to() function"""
+        self.assertEqual('fred ', tab_to(0, 'fred'))
+        self.assertEqual('fred\t', tab_to(1, 'fred'))
+        self.assertEqual('fred was here ', tab_to(1, 'fred was here'))
+        self.assertEqual('fred was here\t\t', tab_to(3, 'fred was here'))
+        self.assertEqual('exactly8 ', tab_to(1, 'exactly8'))
+        self.assertEqual('exactly8\t', tab_to(2, 'exactly8'))
+
+    def test_get_value(self):
+        """Test operation of get_value() function"""
+        self.assertEqual('0x45',
+                         get_value(fdt.TYPE_INT, struct.pack('>I', 0x45)))
+        self.assertEqual('0x45',
+                         get_value(fdt.TYPE_BYTE, struct.pack('<I', 0x45)))
+        self.assertEqual('0x0',
+                         get_value(fdt.TYPE_BYTE, struct.pack('>I', 0x45)))
+        self.assertEqual('"test"', get_value(fdt.TYPE_STRING, 'test'))
+        self.assertEqual('true', get_value(fdt.TYPE_BOOL, None))
+
+    def test_get_compat_name(self):
+        """Test operation of get_compat_name() function"""
+        Prop = collections.namedtuple('Prop', ['value'])
+        Node = collections.namedtuple('Node', ['props'])
+
+        prop = Prop(['rockchip,rk3399-sdhci-5.1', 'arasan,sdhci-5.1'])
+        node = Node({'compatible': prop})
+        self.assertEqual(('rockchip_rk3399_sdhci_5_1', ['arasan_sdhci_5_1']),
+                         get_compat_name(node))
+
+        prop = Prop(['rockchip,rk3399-sdhci-5.1'])
+        node = Node({'compatible': prop})
+        self.assertEqual(('rockchip_rk3399_sdhci_5_1', []),
+                         get_compat_name(node))
+
+        prop = Prop(['rockchip,rk3399-sdhci-5.1', 'arasan,sdhci-5.1', 'third'])
+        node = Node({'compatible': prop})
+        self.assertEqual(('rockchip_rk3399_sdhci_5_1',
+                          ['arasan_sdhci_5_1', 'third']),
+                         get_compat_name(node))
+
+    def test_empty_file(self):
+        """Test output from a device tree file with no nodes"""
+        dtb_file = get_dtb_file('dtoc_test_empty.dts')
+        output = tools.GetOutputFilename('output')
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        with open(output) as infile:
+            lines = infile.read().splitlines()
+        self.assertEqual(['#include <stdbool.h>', '#include <libfdt.h>'], lines)
+
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        with open(output) as infile:
+            lines = infile.read().splitlines()
+        self.assertEqual(['#include <common.h>', '#include <dm.h>',
+                          '#include <dt-structs.h>', ''], lines)
+
+    def test_simple(self):
+        """Test output from some simple nodes with various types of data"""
+        dtb_file = get_dtb_file('dtoc_test_simple.dts')
+        output = tools.GetOutputFilename('output')
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self.assertEqual('''#include <stdbool.h>
+#include <libfdt.h>
+struct dtd_sandbox_spl_test {
+\tbool\t\tboolval;
+\tunsigned char\tbytearray[3];
+\tunsigned char\tbyteval;
+\tfdt32_t\t\tintarray[4];
+\tfdt32_t\t\tintval;
+\tunsigned char\tlongbytearray[9];
+\tconst char *\tstringarray[3];
+\tconst char *\tstringval;
+};
+struct dtd_sandbox_spl_test_2 {
+};
+''', data)
+
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self.assertEqual('''#include <common.h>
+#include <dm.h>
+#include <dt-structs.h>
+
+static struct dtd_sandbox_spl_test dtv_spl_test = {
+\t.bytearray\t\t= {0x6, 0x0, 0x0},
+\t.byteval\t\t= 0x5,
+\t.intval\t\t\t= 0x1,
+\t.longbytearray\t\t= {0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11},
+\t.stringval\t\t= "message",
+\t.boolval\t\t= true,
+\t.intarray\t\t= {0x2, 0x3, 0x4, 0x0},
+\t.stringarray\t\t= {"multi-word", "message", ""},
+};
+U_BOOT_DEVICE(spl_test) = {
+\t.name\t\t= "sandbox_spl_test",
+\t.platdata\t= &dtv_spl_test,
+\t.platdata_size\t= sizeof(dtv_spl_test),
+};
+
+static struct dtd_sandbox_spl_test dtv_spl_test2 = {
+\t.bytearray\t\t= {0x1, 0x23, 0x34},
+\t.byteval\t\t= 0x8,
+\t.intval\t\t\t= 0x3,
+\t.longbytearray\t\t= {0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
+\t.stringval\t\t= "message2",
+\t.intarray\t\t= {0x5, 0x0, 0x0, 0x0},
+\t.stringarray\t\t= {"another", "multi-word", "message"},
+};
+U_BOOT_DEVICE(spl_test2) = {
+\t.name\t\t= "sandbox_spl_test",
+\t.platdata\t= &dtv_spl_test2,
+\t.platdata_size\t= sizeof(dtv_spl_test2),
+};
+
+static struct dtd_sandbox_spl_test dtv_spl_test3 = {
+\t.stringarray\t\t= {"one", "", ""},
+};
+U_BOOT_DEVICE(spl_test3) = {
+\t.name\t\t= "sandbox_spl_test",
+\t.platdata\t= &dtv_spl_test3,
+\t.platdata_size\t= sizeof(dtv_spl_test3),
+};
+
+static struct dtd_sandbox_spl_test_2 dtv_spl_test4 = {
+};
+U_BOOT_DEVICE(spl_test4) = {
+\t.name\t\t= "sandbox_spl_test_2",
+\t.platdata\t= &dtv_spl_test4,
+\t.platdata_size\t= sizeof(dtv_spl_test4),
+};
+
+''', data)
+
+    def test_phandle(self):
+        """Test output from a node containing a phandle reference"""
+        dtb_file = get_dtb_file('dtoc_test_phandle.dts')
+        output = tools.GetOutputFilename('output')
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self.assertEqual('''#include <stdbool.h>
+#include <libfdt.h>
+struct dtd_source {
+\tstruct phandle_2_cell clocks[1];
+};
+struct dtd_target {
+\tfdt32_t\t\tintval;
+};
+''', data)
+
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self.assertEqual('''#include <common.h>
+#include <dm.h>
+#include <dt-structs.h>
+
+static struct dtd_target dtv_phandle_target = {
+\t.intval\t\t\t= 0x1,
+};
+U_BOOT_DEVICE(phandle_target) = {
+\t.name\t\t= "target",
+\t.platdata\t= &dtv_phandle_target,
+\t.platdata_size\t= sizeof(dtv_phandle_target),
+};
+
+static struct dtd_source dtv_phandle_source = {
+\t.clocks\t\t\t= {{&dtv_phandle_target, 1}},
+};
+U_BOOT_DEVICE(phandle_source) = {
+\t.name\t\t= "source",
+\t.platdata\t= &dtv_phandle_source,
+\t.platdata_size\t= sizeof(dtv_phandle_source),
+};
+
+''', data)
+
+    def test_aliases(self):
+        """Test output from a node with multiple compatible strings"""
+        dtb_file = get_dtb_file('dtoc_test_aliases.dts')
+        output = tools.GetOutputFilename('output')
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self.assertEqual('''#include <stdbool.h>
+#include <libfdt.h>
+struct dtd_compat1 {
+\tfdt32_t\t\tintval;
+};
+#define dtd_compat2_1_fred dtd_compat1
+#define dtd_compat3 dtd_compat1
+''', data)
+
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self.assertEqual('''#include <common.h>
+#include <dm.h>
+#include <dt-structs.h>
+
+static struct dtd_compat1 dtv_spl_test = {
+\t.intval\t\t\t= 0x1,
+};
+U_BOOT_DEVICE(spl_test) = {
+\t.name\t\t= "compat1",
+\t.platdata\t= &dtv_spl_test,
+\t.platdata_size\t= sizeof(dtv_spl_test),
+};
+
+''', data)