Import new (BSDL) device tree compiler. Now built by default, so that it can't

be used on the host system (and not installed on the device, if required).  The
GPL'd one is still available if there are any devices that need it (make
universe passes with it, including kernels that use fdt, but there may be some
out-of-tree ones).  WITH_GPL_DTC can be used to select the old one, for now.

Probably won't be MFC'd, but we'll remove the GPL'd version in head after the
new one has had a lot more testing and ship it in 10.0.

1 files changed, 210 insertions, 0 deletions

diff --git a/usr.bin/dtc/checking.cc b/usr.bin/dtc/checking.cc
new file mode 100644
index 0000000..aff3752
--- /dev/null
+++ b/usr.bin/dtc/checking.cc
@@ -0,0 +1,210 @@
+/*-
+ * Copyright (c) 2013 David Chisnall
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "checking.hh"
+
+namespace dtc
+{
+namespace fdt
+{
+namespace checking
+{
+
+bool
+checker::visit_node(device_tree *tree, node *n)
+{
+	path.push_back(std::make_pair(n->name, n->unit_address));
+	// Check this node
+	if (!check_node(tree, n))
+	{
+		return false;
+	}
+	// Now check its properties
+	for (node::property_iterator i=n->property_begin(), e=n->property_end()
+	     ; i!=e ; ++i)
+	{
+		if (!check_property(tree, n, *i))
+		{
+			return false;
+		}
+	}
+	// And then recursively check the children
+	for (node::child_iterator i=n->child_begin(), e=n->child_end() ; i!=e ;
+	     ++i)
+	{
+		if (!visit_node(tree, *i))
+		{
+			return false;
+		}
+	}
+	path.pop_back();
+	return true;
+}
+
+void
+checker::report_error(const char *errmsg)
+{
+	fprintf(stderr, "Error: %s, while checking node: ", errmsg);
+	for (device_tree::node_path::iterator p=path.begin()+1, pe=path.end() ;
+	     p!=pe ; ++p)
+	{
+		putc('/', stderr);
+		p->first.dump();
+		if (!(p->second.empty()))
+		{
+			putc('@', stderr);
+			p->second.dump();
+		}
+	}
+	fprintf(stderr, " [-W%s]\n", checker_name);
+}
+
+bool
+property_checker::check_property(device_tree *tree, node *n, property *p)
+{
+	if (p->get_key() == key)
+	{
+		if (!check(tree, n, p))
+		{
+			report_error("property check failed");
+			return false;
+		}
+	}
+	return true;
+}
+
+bool
+property_size_checker::check(device_tree *tree, node *n, property *p)
+{
+	uint32_t psize = 0;
+	for (property::value_iterator i=p->begin(),e=p->end() ; i!=e ; ++i)
+	{
+		if (!i->is_binary())
+		{
+			return false;
+		}
+		psize += i->byte_data.size();
+	}
+	return psize == size;
+}
+
+template<property_value::value_type T>
+void
+check_manager::add_property_type_checker(const char *name, string prop)
+{
+	checkers.insert(std::make_pair(string(name),
+		new property_type_checker<T>(name, prop)));
+}
+
+void
+check_manager::add_property_size_checker(const char *name,
+                                         string prop,
+                                         uint32_t size)
+{
+	checkers.insert(std::make_pair(string(name),
+		new property_size_checker(name, prop, size)));
+}
+
+check_manager::~check_manager()
+{
+	while (checkers.begin() != checkers.end())
+	{
+		delete checkers.begin()->second;
+		checkers.erase(checkers.begin());
+	}
+	while (disabled_checkers.begin() != disabled_checkers.end())
+	{
+		delete disabled_checkers.begin()->second;
+	}
+}
+
+check_manager::check_manager()
+{
+	// NOTE: All checks listed here MUST have a corresponding line
+	// in the man page!
+	add_property_type_checker<property_value::STRING_LIST>(
+			"type-compatible", string("compatible"));
+	add_property_type_checker<property_value::STRING>(
+			"type-model", string("model"));
+	add_property_size_checker("type-phandle", string("phandle"), 4);
+}
+
+bool
+check_manager::run_checks(device_tree *tree, bool keep_going)
+{
+	bool success = true;
+	for (std::map<string, checker*>::iterator i=checkers.begin(),
+	     e=checkers.end() ; i!=e ; ++i)
+	{
+		success &= i->second->check_tree(tree);
+		if (!(success || keep_going))
+		{
+			break;
+		}
+	}
+	return success;
+}
+
+bool
+check_manager::disable_checker(string name)
+{
+	std::map<string, checker*>::iterator checker = checkers.find(name);
+	if (checker != checkers.end())
+	{
+		disabled_checkers.insert(std::make_pair(name,
+		                                        checker->second));
+		checkers.erase(checker);
+		return true;
+	}
+	return false;
+}
+
+bool
+check_manager::enable_checker(string name)
+{
+	std::map<string, checker*>::iterator checker =
+		disabled_checkers.find(name);
+	if (checker != disabled_checkers.end())
+	{
+		checkers.insert(std::make_pair(name, checker->second));
+		disabled_checkers.erase(checker);
+		return true;
+	}
+	return false;
+}
+
+} // namespace checking
+
+} // namespace fdt
+
+} // namespace dtc
+