[PATCH 1/3] devicetree/dtc: Add initial device tree test

[Jeremy Kerr]

Check that we can compile the device tree with dtc.

Signed-off-by: Jeremy Kerr <jk at ozlabs.org>

---
 src/Makefile.am          |    1 
 src/devicetree/dtc/dtc.c |   76 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)

diff --git a/src/Makefile.am b/src/Makefile.am
index 62c63ef..4a2622b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -78,6 +78,7 @@ fwts_SOURCES = main.c 				\
 	cpu/nx/nx.c 				\
 	cpu/msr/msr.c 				\
 	cpu/microcode/microcode.c 		\
+	devicetree/dtc/dtc.c			\
 	dmi/dmicheck/dmicheck.c 		\
 	hotkey/hotkey/hotkey.c 			\
 	hpet/hpet_check/hpet_check.c 		\
diff --git a/src/devicetree/dtc/dtc.c b/src/devicetree/dtc/dtc.c
new file mode 100644
index 0000000..c1420dc
--- /dev/null
+++ b/src/devicetree/dtc/dtc.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2014 Jeremy Kerr <jk at ozlabs.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+#define _GNU_SOURCE
+#include <assert.h>
+#include <stdio.h>
+
+#include "fwts.h"
+
+static const char *devicetree_path = "/proc/device-tree";
+
+static int dtc_check_valid(fwts_framework *fw)
+{
+	int rc, status;
+	char *command;
+
+	rc = asprintf(&command, "dtc -I fs -o /dev/null %s", devicetree_path);
+	assert(rc > 0);
+
+	rc = fwts_exec(command, &status);
+	free(command);
+
+	if (rc != FWTS_OK || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+		fwts_failed(fw, LOG_LEVEL_HIGH, "DeviceTreeDtcParseFail",
+				"dtc reports device tree errors");
+		return FWTS_ERROR;
+	}
+
+	fwts_passed(fw, "dtc test passed");
+	return FWTS_OK;
+}
+
+static int dtc_init(fwts_framework *fw)
+{
+	int rc, status;
+
+	rc = fwts_exec("echo '/dts-v1/; / { };' | dtc -o /dev/null", &status);
+
+	if (rc != FWTS_OK || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+		fwts_aborted(fw, "Failed to run dtc");
+		return FWTS_ABORTED;
+	}
+
+	return FWTS_OK;
+}
+
+static fwts_framework_minor_test dtc_tests[] = {
+	{ dtc_check_valid, "Check device tree validity with dtc" },
+	{ NULL, NULL },
+};
+
+static fwts_framework_ops dtc_ops = {
+	.description	= "Device tree compilation test",
+	.minor_tests	= dtc_tests,
+	.init		= dtc_init,
+};
+
+FWTS_REGISTER_FEATURES("dtc", &dtc_ops, FWTS_TEST_ANYTIME,
+		FWTS_FLAG_BATCH, FWTS_FW_FEATURE_DEVICETREE);